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2003
Piermattei, A.; Azario, L.; Fidanzio, A.; Viola, P.; Dell'Omo, C.; Iadanza, L.; Fusco, V.; Lagares, J. I.; Capote, R.
The wall correction factor for a spherical ionization chamber used in brachytherapy source calibration Artículo de revista
En: Phys. Med. Biol., vol. 48, no 24, pp. 4091–4103, 2003, ISSN: 1361-6560.
Resumen | Enlaces | BibTeX | Etiquetas:
@article{Piermattei2003,
title = {The wall correction factor for a spherical ionization chamber used in brachytherapy source calibration},
author = {A. Piermattei and L. Azario and A. Fidanzio and P. Viola and C. Dell'Omo and L. Iadanza and V. Fusco and J. I. Lagares and R. Capote},
url = {https://iopscience.iop.org/article/10.1088/0031-9155/48/24/007/meta},
doi = {10.1088/0031-9155/48/24/007},
issn = {1361-6560},
year = {2003},
date = {2003-12-21},
urldate = {2003-12-21},
journal = {Phys. Med. Biol.},
volume = {48},
number = {24},
pages = {4091–4103},
publisher = {IOP Publishing},
abstract = {The effect of wall chamber attenuation and scattering is one of the most important corrections that must be determined when the linear interpolation method between two calibration factors of an ionization chamber is used. For spherical ionization chambers the corresponding correction factors A_w have to be determined by a non-linear trend of the response as a function of the wall thickness. The Monte Carlo and experimental data here reported show that the A_w factors obtained for an Exradin A4 chamber, used in the brachytherapy source calibration, in terms of reference air kerma rate, are up to 1.2% greater than the values obtained by the linear extrapolation method for the studied beam qualities. Using the A_w factors derived from Monte Carlo calculations, the accuracy of the calibration factor N_K,Ir for the Exradin A4, obtained by the interpolation between two calibration factors, improves about 0.6%. The discrepancy between the new calculated factor and that obtained using the complete calibration curve of the ion-chamber and the ^192Ir spectrum is only 0.1%.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
The effect of wall chamber attenuation and scattering is one of the most important corrections that must be determined when the linear interpolation method between two calibration factors of an ionization chamber is used. For spherical ionization chambers the corresponding correction factors A_w have to be determined by a non-linear trend of the response as a function of the wall thickness. The Monte Carlo and experimental data here reported show that the A_w factors obtained for an Exradin A4 chamber, used in the brachytherapy source calibration, in terms of reference air kerma rate, are up to 1.2% greater than the values obtained by the linear extrapolation method for the studied beam qualities. Using the A_w factors derived from Monte Carlo calculations, the accuracy of the calibration factor N_K,Ir for the Exradin A4, obtained by the interpolation between two calibration factors, improves about 0.6%. The discrepancy between the new calculated factor and that obtained using the complete calibration curve of the ion-chamber and the ^192Ir spectrum is only 0.1%.
Alvarez, R. Padilla; González, M. Celaya
Classification of the regional aboriginal ceramic production and distribution in the central region of Cuba based on INAA Capítulo de libro
En: Capítulo 7, pp. 119–134, International Atomic Energy Agency, 2003.
Resumen | Enlaces | BibTeX | Etiquetas:
@inbook{nokey_25,
title = {Classification of the regional aboriginal ceramic production and distribution in the central region of Cuba based on INAA},
author = {R. Padilla Alvarez and M. Celaya González},
url = {https://www-pub.iaea.org/mtcd/publications/pdf/trs416_web.pdf},
year = {2003},
date = {2003-08-01},
urldate = {2003-08-01},
pages = {119–134},
publisher = {International Atomic Energy Agency},
chapter = {7},
series = {Technical Reports Series No. 4I6 (Nuclear Analytical Techniques in Archaeological Investigations)},
abstract = {Findings from the excavations of Cuban aboriginal Subtaíno and Archaic settlements in the central region (700–1500 A.D.) were analysed by neutron activation analysis (INAA). The exploration of the results obtained was performed using a principal component analysis (PCA) for the reduction of the dimensionality of the data space, and the definition of the chemical paste compositional reference units was aided by the application of the Davis discriminant analysis procedure. As final results, after the analysis of the geological characteristics of the zone and the interpretation of the archaeological contexts under study, the Subtaíno aboriginal pottery could be attributed to several compositional reference units and manufacture loci. The ceramic artefacts in some Archaic sites were also considered as to whether they have been produced locally or imported.},
keywords = {},
pubstate = {published},
tppubtype = {inbook}
}
Findings from the excavations of Cuban aboriginal Subtaíno and Archaic settlements in the central region (700–1500 A.D.) were analysed by neutron activation analysis (INAA). The exploration of the results obtained was performed using a principal component analysis (PCA) for the reduction of the dimensionality of the data space, and the definition of the chemical paste compositional reference units was aided by the application of the Davis discriminant analysis procedure. As final results, after the analysis of the geological characteristics of the zone and the interpretation of the archaeological contexts under study, the Subtaíno aboriginal pottery could be attributed to several compositional reference units and manufacture loci. The ceramic artefacts in some Archaic sites were also considered as to whether they have been produced locally or imported.
Alvarez, R Padilla; Arrazcaeta, R
Classification of majolica pottery from colonial Havana on the basis of INAA Capítulo de libro
En: Capítulo 8, pp. 135–146, International Atomic Energy Agency, 2003.
Resumen | Enlaces | BibTeX | Etiquetas:
@inbook{alvarez2003classification,
title = {Classification of majolica pottery from colonial Havana on the basis of INAA},
author = {R Padilla Alvarez and R Arrazcaeta},
url = {https://www-pub.iaea.org/mtcd/publications/pdf/trs416_web.pdf},
year = {2003},
date = {2003-01-01},
urldate = {2003-01-01},
journal = {TECHNICAL REPORT SERIES-INTERNATIONAL ATOMIC ENERGY AGENCY},
pages = {135–146},
publisher = {International Atomic Energy Agency},
chapter = {8},
series = {Technical Reports Series No. 4I6 (Nuclear Analytical Techniques in Archaeological Investigations)},
abstract = {Fragments of pottery from the collections of Havana museums, corresponding to the Spanish colonial period (1600–1900 A.D.), were analysed by instrumental neutron activation analysis (INAA). Analysis of the results for the concentrations of 18 chemical elements was performed using principal component analysis (PCA) to reduce the data space size. Application of the Davis discriminant analysis procedure helped to define the chemical paste compositional reference units. For the final results, typological characterization of the colonial majolica pottery was complemented and enhanced.},
keywords = {},
pubstate = {published},
tppubtype = {inbook}
}
Fragments of pottery from the collections of Havana museums, corresponding to the Spanish colonial period (1600–1900 A.D.), were analysed by instrumental neutron activation analysis (INAA). Analysis of the results for the concentrations of 18 chemical elements was performed using principal component analysis (PCA) to reduce the data space size. Application of the Davis discriminant analysis procedure helped to define the chemical paste compositional reference units. For the final results, typological characterization of the colonial majolica pottery was complemented and enhanced.
Alberro, N.; Montero, A.; Valcarcel, L.; Pupo, I.; Frias, D.; Oliva, F. Perez
Evaluation of the waters of supply in the 30 haemodialysis room of the country Proceedings Article
En: 9. Workshop on the Class of Environment, pp. 305-309, Instituto Superior de Tecnologias y Ciencias Aplicadas, 2003, ISBN: 959-7136-20-1.
Resumen | Enlaces | BibTeX | Etiquetas:
@inproceedings{alberro_montero_valcarcel_pupo_frias_perezoliva_2003,
title = {Evaluation of the waters of supply in the 30 haemodialysis room of the country},
author = {N. Alberro and A. Montero and L. Valcarcel and I. Pupo and D. Frias and F. Perez Oliva},
url = {https://inis.iaea.org/records/e8mz3-faz83},
isbn = {959-7136-20-1},
year = {2003},
date = {2003-01-01},
urldate = {2003-01-01},
booktitle = {9. Workshop on the Class of Environment},
pages = {305-309},
publisher = {Instituto Superior de Tecnologias y Ciencias Aplicadas},
abstract = {A group of chemical physical parameters was determined in thirty drinking water samples supplied to treatment plants for dialysis room in ten provinces. The determinations were performed, in all cases, according to International Standard Procedures and validated Laboratory's procedures. In order to achieve an adequate data interpretation the principal component method was applied. The obtained results offer a helpful information to design a suitably dialysis water treatment plants.},
keywords = {},
pubstate = {published},
tppubtype = {inproceedings}
}
A group of chemical physical parameters was determined in thirty drinking water samples supplied to treatment plants for dialysis room in ten provinces. The determinations were performed, in all cases, according to International Standard Procedures and validated Laboratory's procedures. In order to achieve an adequate data interpretation the principal component method was applied. The obtained results offer a helpful information to design a suitably dialysis water treatment plants.
Arráns, R; Sánchez-Doblado, F; Gallardo, MI; Capote, R
A Theoretical Model for "in vivo" Dosimetry of Rotational Beams Artículo de revista
En: Physica medica: european journal of medical physics, vol. XIX, no 1, pp. 5–12, 2003.
Resumen | Enlaces | BibTeX | Etiquetas:
@article{arrans2003theoretical,
title = {A Theoretical Model for "in vivo" Dosimetry of Rotational Beams},
author = {R Arráns and F Sánchez-Doblado and MI Gallardo and R Capote},
url = {https://www.torrossa.com/en/resources/an/2234170
https://www.researchgate.net/profile/Roberto-Capote/publication/289358590_Experimental_and_Monte_Carlo_endovascular_dosimetry_of_a_192Ir_source/links/63f0e9212958d64a5cde751d/Experimental-and-Monte-Carlo-endovascular-dosimetry-of-a-192Ir-source.pdf},
year = {2003},
date = {2003-01-01},
urldate = {2003-01-01},
journal = {Physica medica: european journal of medical physics},
volume = {XIX},
number = {1},
pages = {5--12},
publisher = {Istituti editoriali e poligrafici internazionali},
abstract = {A model for estimating the dose delivered at the isocenter of a rotational radiotherapy treatment is described which makes use of discrete dose values calculated with Monte Carlo. Validation of the model using EGS4 system was performed, showing 2% agreement between model predicted isocenter dose and Monte Carlo calculations. The model can be used in routine to verify the agreement between actual and prescribed dose with no further modification of a conventional in vivo dosimetry system intended for static beams.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
A model for estimating the dose delivered at the isocenter of a rotational radiotherapy treatment is described which makes use of discrete dose values calculated with Monte Carlo. Validation of the model using EGS4 system was performed, showing 2% agreement between model predicted isocenter dose and Monte Carlo calculations. The model can be used in routine to verify the agreement between actual and prescribed dose with no further modification of a conventional in vivo dosimetry system intended for static beams.
Alvarez, Román Padilla; Espen, Pierre J. M. Van; Plá, Rita Rosa; Rossi, Eduardo Montoya; Delgado, Roger Arrazcaeta; Torres, Pedro Pablo Godo; González, Miriam Celaya
Compositional Classification of Archaeological Pottery Based on INAA and SEM-EDX Artículo de revista
En: Journal of Trace and Microprobe Techniques, vol. 21, no 4, pp. 677–695, 2003.
Resumen | Enlaces | BibTeX | Etiquetas:
@article{Alvarez02012003,
title = {Compositional Classification of Archaeological Pottery Based on INAA and SEM-EDX},
author = {Román Padilla Alvarez and Pierre J. M. Van Espen and Rita Rosa Plá and Eduardo Montoya Rossi and Roger Arrazcaeta Delgado and Pedro Pablo Godo Torres and Miriam Celaya González},
url = {https://www.tandfonline.com/doi/abs/10.1081/TMA-120025818},
doi = {10.1081/TMA-120025818},
year = {2003},
date = {2003-01-01},
urldate = {2003-01-01},
journal = {Journal of Trace and Microprobe Techniques},
volume = {21},
number = {4},
pages = {677–695},
publisher = {Taylor & Francis},
abstract = {The suitability of combining Instrumental Neutron Activation Analysis (INAA) and Electron Probe X-ray Microanalysis (SEM-EDX) for the classification of archaeological pottery based on their composition is illustrated with two examples of different nature and complexity: the study of Cuban aborigine pottery production and distribution and the classification of Majolica from the colonial period. The different scope and features of both techniques complement each other in achieving a more consistent and complete characterization of the composition and structure of the ceramic paste.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
The suitability of combining Instrumental Neutron Activation Analysis (INAA) and Electron Probe X-ray Microanalysis (SEM-EDX) for the classification of archaeological pottery based on their composition is illustrated with two examples of different nature and complexity: the study of Cuban aborigine pottery production and distribution and the classification of Majolica from the colonial period. The different scope and features of both techniques complement each other in achieving a more consistent and complete characterization of the composition and structure of the ceramic paste.
Fuentes-Lorenzo, JL; Rodríguez-Medina, NN; Santiago-Hernández, L; Valdés-Carbonel, Y; Ramírez-Pérez, I; Velazquez-Palenzuela, B; Prieto-Miranda, E; Guerra-Torrez, M
Zygotic embryo culture and mutation breeding in avocado (Persea americana Mill). Proceedings Article
En: Proceedings V World Avocado Congress (Actas V Congreso Mundial del Aguacate), pp. 73–81, 2003.
Resumen | Enlaces | BibTeX | Etiquetas:
@inproceedings{fuentes2003zygotic,
title = {Zygotic embryo culture and mutation breeding in avocado (Persea americana Mill).},
author = {JL Fuentes-Lorenzo and NN Rodríguez-Medina and L Santiago-Hernández and Y Valdés-Carbonel and I Ramírez-Pérez and B Velazquez-Palenzuela and E Prieto-Miranda and M Guerra-Torrez},
url = {http://www.avocadosource.com/wac5/Papers/WAC5_p073.pdf},
year = {2003},
date = {2003-01-01},
urldate = {2003-01-01},
booktitle = {Proceedings V World Avocado Congress (Actas V Congreso Mundial del Aguacate)},
pages = {73–81},
abstract = {Mutation induction and biotechnological techniques are current approaches used in plant breeding. At present work, both methodologies were combined in order to obtain a mutation-breeding model in avocado. In vitro germination and rooting of zygotic embryos, sprout multiplication and plantlets adaptation in Cuban avocado varieties were studied. Percentage of germinated entire embryos were higher using mature than immature embryos. Near of 80 % of entire plantlets obtained by embryo culture technique were adapted to greenhouse conditions. Based on inhibition of entire sprout fraction, radiosensibility curves for Duke and Hass varieties were developed. Inhibition of entire sprout fraction was described by a second order polynomial equation. Fit of experimental data and theoretical model was equal to 0.96 and 0.95 for Hass and Duke radiosensibility curves, respectively. LD_50 values defined as the dose, at which the 50 % of entire sprout fraction are inhibited, were determined in 27 and 28 Gy for Hass and Duke varieties, respectively. Gamma-rays mutagenic doses for zygotic embryos of both varieties were also established between 19 and 25 Gy. Applied mutagenic dose did not affect significantly plantlets development. However, leaf and root anomalies, atrophied and chlorophyll-deficient shoots and albinism were observed at doses higher than LD_50 values. The usefulness of the combined approach to improve avocado varieties was discussed. This in vitro methodology appears as an alternative to traditional breeding methods, particularly for improving agronomic characteristics as rot-root resistance and salt tolerance in avocado.},
keywords = {},
pubstate = {published},
tppubtype = {inproceedings}
}
Mutation induction and biotechnological techniques are current approaches used in plant breeding. At present work, both methodologies were combined in order to obtain a mutation-breeding model in avocado. In vitro germination and rooting of zygotic embryos, sprout multiplication and plantlets adaptation in Cuban avocado varieties were studied. Percentage of germinated entire embryos were higher using mature than immature embryos. Near of 80 % of entire plantlets obtained by embryo culture technique were adapted to greenhouse conditions. Based on inhibition of entire sprout fraction, radiosensibility curves for Duke and Hass varieties were developed. Inhibition of entire sprout fraction was described by a second order polynomial equation. Fit of experimental data and theoretical model was equal to 0.96 and 0.95 for Hass and Duke radiosensibility curves, respectively. LD_50 values defined as the dose, at which the 50 % of entire sprout fraction are inhibited, were determined in 27 and 28 Gy for Hass and Duke varieties, respectively. Gamma-rays mutagenic doses for zygotic embryos of both varieties were also established between 19 and 25 Gy. Applied mutagenic dose did not affect significantly plantlets development. However, leaf and root anomalies, atrophied and chlorophyll-deficient shoots and albinism were observed at doses higher than LD_50 values. The usefulness of the combined approach to improve avocado varieties was discussed. This in vitro methodology appears as an alternative to traditional breeding methods, particularly for improving agronomic characteristics as rot-root resistance and salt tolerance in avocado.
Perez, Marco Antonio Coca; Aroche, Leonel Alberto Torres; Cornejo, Nestor; Hernandez, Guido Martin
S values at voxels level for ^188Re and ^90Y calculated with the MCNP-4C code Artículo de revista
En: Nucleus, no 32, pp. 49-53, 2003, ISSN: 0864-084X.
Resumen | Enlaces | BibTeX | Etiquetas:
@article{cocaperez_torresaroche_cornejo_martinhernandez_2003,
title = {S values at voxels level for ^188Re and ^90Y calculated with the MCNP-4C code},
author = {Marco Antonio Coca Perez and Leonel Alberto Torres Aroche and Nestor Cornejo and Guido Martin Hernandez},
url = {https://inis.iaea.org/records/f4477-npy10},
issn = {0864-084X},
year = {2003},
date = {2003-01-01},
urldate = {2003-01-01},
journal = {Nucleus},
number = {32},
pages = {49-53},
abstract = {The main objective of this work was estimate the voxels S values for ^188Re at cubical geometry using the MCNP-4C code for the simulation of radiation transport and energy deposition. Mean absorbed dose to target voxels per radioactive decay in a source voxels were estimated and reported for ^188Re and Y^90. A comparison of voxels S values computed with the MCNP code the data reported in MIRD pamphlet 17 for ^90Y was performed in order to evaluate our results.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
The main objective of this work was estimate the voxels S values for ^188Re at cubical geometry using the MCNP-4C code for the simulation of radiation transport and energy deposition. Mean absorbed dose to target voxels per radioactive decay in a source voxels were estimated and reported for ^188Re and Y^90. A comparison of voxels S values computed with the MCNP code the data reported in MIRD pamphlet 17 for ^90Y was performed in order to evaluate our results.
2001
Molina, A.; Capote, R.; Quesada, J. M.; Lozano, M.
Dispersive spherical optical model of neutron scattering from 27Al up to 250 MeV Artículo de revista
En: Phys. Rev. C, vol. 65, no 3, 2001, ISSN: 1089-490X.
Resumen | Enlaces | BibTeX | Etiquetas:
@article{Molina2002,
title = {Dispersive spherical optical model of neutron scattering from ^{27}Al up to 250 MeV},
author = {A. Molina and R. Capote and J. M. Quesada and M. Lozano},
doi = {10.1103/physrevc.65.034616},
issn = {1089-490X},
year = {2001},
date = {2001-11-16},
urldate = {2001-11-16},
journal = {Phys. Rev. C},
volume = {65},
number = {3},
publisher = {American Physical Society (APS)},
abstract = {A spherical optical model potential (OMP) containing a dispersive term is used to fit the available experimental database of 𝜎(𝜃) and 𝜎𝑇 for 𝑛+27Al covering the energy range 0.1–250 MeV using relativistic kinematics and a relativistic extension of the Schrödinger equation. A dispersive OMP with parameters that show a smooth energy dependence and an energy-independent geometry are determined from fits to the entire data set. A very good overall agreement between experimental data and predictions is achieved up to 150 MeV. Inclusion of nonlocality effects in the absorptive volume potential allows one to achieve an excellent agreement up to 250 MeV.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
A spherical optical model potential (OMP) containing a dispersive term is used to fit the available experimental database of 𝜎(𝜃) and 𝜎𝑇 for 𝑛+27Al covering the energy range 0.1–250 MeV using relativistic kinematics and a relativistic extension of the Schrödinger equation. A dispersive OMP with parameters that show a smooth energy dependence and an energy-independent geometry are determined from fits to the entire data set. A very good overall agreement between experimental data and predictions is achieved up to 150 MeV. Inclusion of nonlocality effects in the absorptive volume potential allows one to achieve an excellent agreement up to 250 MeV.
Leyva, A.; Alfonzo, O.; Cruz, C. M.
Study of the special distribution of the gamma radiation deposited in superconductive ceramics of YBCO Artículo de revista
En: Revista Mexicana de Física, vol. 47, iss. 4, pp. 362-366, 2001, ISSN: 0035-001X.
Resumen | Enlaces | BibTeX | Etiquetas:
@article{nokey_24,
title = {Study of the special distribution of the gamma radiation deposited in superconductive ceramics of YBCO},
author = {A. Leyva and O. Alfonzo and C. M. Cruz},
url = {https://www.osti.gov/etdeweb/biblio/20327437},
issn = {0035-001X},
year = {2001},
date = {2001-08-01},
urldate = {2001-08-01},
journal = {Revista Mexicana de Física},
volume = {47},
issue = {4},
pages = {362-366},
abstract = {The spatial distribution of the gamma radiation deposit energy inside YBOC bulk samples irradiated with Co^57, Cs^137 and Co^60 sources was simulated using the Monte Carlo method. The analysis show that the energy distribution is inhomogeneous in all the cases, increasing with the source energy. The maximal deposition zone shifts deeper into the bulk material with the increment of the source energy. The different interaction mechanisms which should play relevant role in the observed effects are discussed in the text. The possible effects of the dose distribution inhomogeneity on the experimentally measured properties are also analysed. An experiment that contributes to confirm the validity of the simulation is presented.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
The spatial distribution of the gamma radiation deposit energy inside YBOC bulk samples irradiated with Co^57, Cs^137 and Co^60 sources was simulated using the Monte Carlo method. The analysis show that the energy distribution is inhomogeneous in all the cases, increasing with the source energy. The maximal deposition zone shifts deeper into the bulk material with the increment of the source energy. The different interaction mechanisms which should play relevant role in the observed effects are discussed in the text. The possible effects of the dose distribution inhomogeneity on the experimentally measured properties are also analysed. An experiment that contributes to confirm the validity of the simulation is presented.
Capote, Roberto; Molina, Alberto; Quesada, José Manuel
A general numerical solution of dispersion relations for the nuclear optical model Artículo de revista
En: J. Phys. G: Nucl. Part. Phys., vol. 27, no 8, pp. B15–B19, 2001, ISSN: 1361-6471.
Resumen | Enlaces | BibTeX | Etiquetas:
@article{Capote2001c,
title = {A general numerical solution of dispersion relations for the nuclear optical model},
author = {Roberto Capote and Alberto Molina and José Manuel Quesada},
doi = {10.1088/0954-3899/27/8/402},
issn = {1361-6471},
year = {2001},
date = {2001-08-01},
urldate = {2001-08-01},
journal = {J. Phys. G: Nucl. Part. Phys.},
volume = {27},
number = {8},
pages = {B15–B19},
publisher = {IOP Publishing},
abstract = {A general numerical solution of the dispersion integral relation between the real and the imaginary parts of the nuclear optical potential is presented. Fast convergence is achieved by means of the Gauss-Legendre integration method, which offers accuracy, ease of implementation and generality for dispersive optical model calculations. The use of this numerical integration method in the optical model parameter search codes allows for a fast and accurate dispersive analysis.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
A general numerical solution of the dispersion integral relation between the real and the imaginary parts of the nuclear optical potential is presented. Fast convergence is achieved by means of the Gauss-Legendre integration method, which offers accuracy, ease of implementation and generality for dispersive optical model calculations. The use of this numerical integration method in the optical model parameter search codes allows for a fast and accurate dispersive analysis.
Capote, Roberto; Mainegra, Ernesto; López, Ernesto
Anisotropy function for 192Ir low-dose-rate brachytherapy sources: an EGS4 Monte Carlo study Artículo de revista
En: Phys. Med. Biol., vol. 46, no 5, pp. 1487–1499, 2001, ISSN: 1361-6560.
Resumen | Enlaces | BibTeX | Etiquetas:
@article{Capote2001,
title = {Anisotropy function for ^{192}Ir low-dose-rate brachytherapy sources: an EGS4 Monte Carlo study},
author = {Roberto Capote and Ernesto Mainegra and Ernesto López},
doi = {10.1088/0031-9155/46/5/311},
issn = {1361-6560},
year = {2001},
date = {2001-05-01},
urldate = {2001-05-01},
journal = {Phys. Med. Biol.},
volume = {46},
number = {5},
pages = {1487–1499},
publisher = {IOP Publishing},
abstract = {The anisotropy function of low-dose-rate ^{192}Ir interstitial brachytherapy sources was studied. Absolute dose rates around ^{192}Ir seeds with stainless steel or platinum cladding and a platinum covered wire have been estimated using the EGS4 Monte Carlo simulation system with a very well tested user code. Our results were compared with available experimental data. Excellent agreement between calculated and measured anisotropy function was found for stainless steel clad ^{192}Ir sources, except along the longitudinal axis of the sources. Dosimetry data for the platinum covered seed and 3 mm long wire with platinum cladding as well as for the stainless steel clad ^{192}Ir source are presented in TG43 format. The influence of phantom dimensions on the anisotropy function was found to be non-negligible over 7 cm, enhancing the anisotropy function by 1-2%. Our results have estimated statistical uncertainties below 1% at 1σ level up to 10 cm excluding the longitudinal axis where statistical uncertainties below 3% up to 10 cm are observed.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
The anisotropy function of low-dose-rate 192Ir interstitial brachytherapy sources was studied. Absolute dose rates around 192Ir seeds with stainless steel or platinum cladding and a platinum covered wire have been estimated using the EGS4 Monte Carlo simulation system with a very well tested user code. Our results were compared with available experimental data. Excellent agreement between calculated and measured anisotropy function was found for stainless steel clad 192Ir sources, except along the longitudinal axis of the sources. Dosimetry data for the platinum covered seed and 3 mm long wire with platinum cladding as well as for the stainless steel clad 192Ir source are presented in TG43 format. The influence of phantom dimensions on the anisotropy function was found to be non-negligible over 7 cm, enhancing the anisotropy function by 1-2%. Our results have estimated statistical uncertainties below 1% at 1σ level up to 10 cm excluding the longitudinal axis where statistical uncertainties below 3% up to 10 cm are observed.
Deus, J. E.; Suarez, E.; Fuentes, J. L.; Alvarez, A.; Padron, E.
Development of new semidwarf sources for rice with different cytoplasms (CV Basmati 370 and Gloria) Proceedings Article
En: Final research co-ordination meeting on induced mutations in connection with biotechnology for crop improvement in Latin America , Lima (Peru), 5-9 Oct 1998, pp. 37–41, 2001, ISSN: 1011-4289.
Resumen | Enlaces | BibTeX | Etiquetas:
@inproceedings{deus_suarez_fuentes_alvarez_padron_2001,
title = {Development of new semidwarf sources for rice with different cytoplasms (CV Basmati 370 and Gloria)},
author = {J. E. Deus and E. Suarez and J. L. Fuentes and A. Alvarez and E. Padron},
url = {https://inis.iaea.org/records/5vgfv-24688/files/32022676.pdf},
issn = {1011-4289},
year = {2001},
date = {2001-05-01},
urldate = {2001-05-01},
booktitle = {Final research co-ordination meeting on induced mutations in connection with biotechnology for crop improvement in Latin America , Lima (Peru), 5-9 Oct 1998},
pages = {37–41},
abstract = {In Cuba semidwarf rice varieties grow on 98% of the area. Virtually all carry the same Dee-geo-won-gen dwarfing gene. Also, most if not all the cultivars have the same cytoplasm. The induced mutations approach was undertaken in order to generate alternative genetic sources of dwarfing with different cytoplasms and to improve the grain quality of Cuban rice. The seeds of two varieties, Basmati 370 and Gloria, were irradiated with 200 and 300 Gy of 60Co gamma rays. In several generations of selection, progeny testing and preliminary yield tests 10 mutants (6 from Basmati 370 and 4 from Gloria), whose yields exceeded the source cultivars, have been advanced to replicated yield trials. Some of the mutant lines are also resistant to lodging and to blast (Pyricularis grisea). It is concluded the induced mutations can be used successfully to improve plant type and other agronomic traits in rice. The induced mutants will be used also in hybridization programs.},
keywords = {},
pubstate = {published},
tppubtype = {inproceedings}
}
In Cuba semidwarf rice varieties grow on 98% of the area. Virtually all carry the same Dee-geo-won-gen dwarfing gene. Also, most if not all the cultivars have the same cytoplasm. The induced mutations approach was undertaken in order to generate alternative genetic sources of dwarfing with different cytoplasms and to improve the grain quality of Cuban rice. The seeds of two varieties, Basmati 370 and Gloria, were irradiated with 200 and 300 Gy of 60Co gamma rays. In several generations of selection, progeny testing and preliminary yield tests 10 mutants (6 from Basmati 370 and 4 from Gloria), whose yields exceeded the source cultivars, have been advanced to replicated yield trials. Some of the mutant lines are also resistant to lodging and to blast (Pyricularis grisea). It is concluded the induced mutations can be used successfully to improve plant type and other agronomic traits in rice. The induced mutants will be used also in hybridization programs.
Fuentes, J. L.; Alvarez, A.; Gutierrez, L.; Deus, J. E.
Isozymes variability in rice mutants induced by fast neutrons and gamma rays Proceedings Article
En: Final research co-ordination meeting on induced mutations in connection with biotechnology for crop improvement in Latin America , Lima (Peru), 5-9 Oct 1998, pp. 19–23, 2001, ISSN: 1011-4289.
Resumen | Enlaces | BibTeX | Etiquetas:
@inproceedings{fuentes_alvarez_gutierrez_deus_2001,
title = {Isozymes variability in rice mutants induced by fast neutrons and gamma rays},
author = {J. L. Fuentes and A. Alvarez and L. Gutierrez and J. E. Deus},
url = {https://inis.iaea.org/records/vm43m-wrb73/files/32022674.pdf},
issn = {1011-4289},
year = {2001},
date = {2001-05-01},
urldate = {2001-05-01},
booktitle = {Final research co-ordination meeting on induced mutations in connection with biotechnology for crop improvement in Latin America , Lima (Peru), 5-9 Oct 1998},
pages = {19–23},
abstract = {The isozyme variability of a group of rice mutants induced through gamma and fast neutron (14 MeV) irradiation was studied. Polymorphisms were detected using esterase, peroxidase, polyphenol oxidase and alcohol dehydrogenase systems. The mean value of genetic similarity among the different cultivars, which arose from isozymes, was 0.75. The dendrogram was constructed based on genetic similarity matrices, designed with isozyme data using the unweighed pair group method arithmetic average (UPGMA) method. The efficiency of the UPGMA model for the estimation of genetic relationship among cultivars was supported by cophenetic correlation coefficients. Such values indicate that the distortion degree for the estimated similarities was minimal. It was found that both gamma rays and fast neutrons generated a wide range of variability which can be detected by means of isozyme patterns, even in closely related cultivars.},
keywords = {},
pubstate = {published},
tppubtype = {inproceedings}
}
The isozyme variability of a group of rice mutants induced through gamma and fast neutron (14 MeV) irradiation was studied. Polymorphisms were detected using esterase, peroxidase, polyphenol oxidase and alcohol dehydrogenase systems. The mean value of genetic similarity among the different cultivars, which arose from isozymes, was 0.75. The dendrogram was constructed based on genetic similarity matrices, designed with isozyme data using the unweighed pair group method arithmetic average (UPGMA) method. The efficiency of the UPGMA model for the estimation of genetic relationship among cultivars was supported by cophenetic correlation coefficients. Such values indicate that the distortion degree for the estimated similarities was minimal. It was found that both gamma rays and fast neutrons generated a wide range of variability which can be detected by means of isozyme patterns, even in closely related cultivars.
Sarría, P.; Desdín-García, Luis Felipe; Domínguez, O.; Rondón, S.; Freixas, V.; Aneiros, L.; Díaz, O.
Análisis de zeolitas naturales por técnicas nucleares Artículo de revista
En: Revista Tecnología en Marcha, vol. 13, no 4, pp. 65–67, 2001.
Resumen | Enlaces | BibTeX | Etiquetas:
@article{Sarría_Desdín-García_Domínguez_Rondón_Freixas_Aneiros_Díaz_2026,
title = {Análisis de zeolitas naturales por técnicas nucleares},
author = {P. Sarría and Luis Felipe Desdín-García and O. Domínguez and S. Rondón and V. Freixas and L. Aneiros and O. Díaz},
url = {https://revistas.tec.ac.cr/index.php/tec_marcha/article/view/1543/1435},
year = {2001},
date = {2001-02-01},
urldate = {2001-02-01},
journal = {Revista Tecnología en Marcha},
volume = {13},
number = {4},
pages = {65–67},
abstract = {En este artículo se reporta una metodología de análisis elemental de zeolitas naturales usando diferentes técnicas nucleares(AANR, FRX, MRN y EG). Se determinó la composición elemental de muestras de dos yacimientos cubanos.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
En este artículo se reporta una metodología de análisis elemental de zeolitas naturales usando diferentes técnicas nucleares(AANR, FRX, MRN y EG). Se determinó la composición elemental de muestras de dos yacimientos cubanos.
Capote, Roberto; Delgado, Alain; Gonzalez, Augusto
Pygmy resonances in artificial nuclei: far-infrared absorption by electron-hole droplets Artículo de revista
En: Mod. Phys. Lett. B, vol. 15, no 02, pp. 81–87, 2001, ISSN: 1793-6640.
Resumen | Enlaces | BibTeX | Etiquetas:
@article{CAPOTE2001b,
title = {Pygmy resonances in artificial nuclei: far-infrared absorption by electron-hole droplets},
author = {Roberto Capote and Alain Delgado and Augusto Gonzalez},
url = {https://arxiv.org/pdf/cond-mat/0101173},
doi = {10.1142/s0217984901001549},
issn = {1793-6640},
year = {2001},
date = {2001-01-30},
urldate = {2001-01-30},
journal = {Mod. Phys. Lett. B},
volume = {15},
number = {02},
pages = {81–87},
publisher = {World Scientific Pub Co Pte Lt},
abstract = {The structure of E1 resonances has been examined in a microscopic random phase approximation calculation for neutral, symmetric, closed shell and electron–hole systems in a quantum dot. The number of electron–hole pairs, N, is varied from 6 to 42. The occurrence of small, but distinct, E1 peaks in the far-infrared spectra located in the low energy tail of the giant dipole resonance consisting of highly coherent electron–hole excitations is predicted. These pygmy resonances account for about 2% of the dipole energy-weighted photoabsorption sum rule. A very weak dependence of the average pygmy resonance energy on the number of electron–hole pairs is found.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
The structure of E1 resonances has been examined in a microscopic random phase approximation calculation for neutral, symmetric, closed shell and electron–hole systems in a quantum dot. The number of electron–hole pairs, N, is varied from 6 to 42. The occurrence of small, but distinct, E1 peaks in the far-infrared spectra located in the low energy tail of the giant dipole resonance consisting of highly coherent electron–hole excitations is predicted. These pygmy resonances account for about 2% of the dipole energy-weighted photoabsorption sum rule. A very weak dependence of the average pygmy resonance energy on the number of electron–hole pairs is found.
Fuentes, J. L.; Ramirez, I. M.; Santiago, L.; Valdes, Y.; Guerra, M.; Prieto, E.; Rodriguez, N.; Velazquez, B.
Gamma rays induced variability in mature embryos of avocado (Persea americana Mill) Proceedings Article
En: 3. NURT 2001 , La Habana (Cuba), 22-26 Oct 2001, 2001, ISBN: 959-7136-12-0.
Resumen | Enlaces | BibTeX | Etiquetas:
@inproceedings{fuentes_ramirez_santiago_valdes_guerra_prieto_rodriguez_velazquez_2001,
title = {Gamma rays induced variability in mature embryos of avocado (Persea americana Mill)},
author = {J. L. Fuentes and I. M. Ramirez and L. Santiago and Y. Valdes and M. Guerra and E. Prieto and N. Rodriguez and B. Velazquez},
url = {https://inis.iaea.org/records/854t5-01a52
http://www.ceaden.cu/wp-content/uploads/2026/03/plant23f.pdf},
isbn = {959-7136-12-0},
year = {2001},
date = {2001-01-01},
urldate = {2001-01-01},
booktitle = {3. NURT 2001 , La Habana (Cuba), 22-26 Oct 2001},
abstract = {Induced mutation and biotechnology techniques are current approaches used in plant breeding. At present work, the induced mutation and embryo zygotic culture techniques were used in order to characterize the radiosensitivity of avocado commercial varieties, Hass and California. The induced diversity in plant material was also evaluated in morphological seedling descriptors as: height seedling, diameter seedling neck, leaves number, length of principal root and secondary root number. The obtained results showed high susceptibility of both varieties to gamma rays. California was the higher sensitivity variety. Percentage of entire shoot induction showed clear dependence of radiation dose in both varieties. Thus dose range for mutagenesis was determined. In general, variation of morphological seedling descriptors not was clearly agreed to increase of radiation dose. In addition, the results suggested that variation in morphological seedling descriptors also could be depending of genotypes. The useful of mature embryo culture of avocado for improvement of breeding approaches in this crop, was discussed.},
keywords = {},
pubstate = {published},
tppubtype = {inproceedings}
}
Induced mutation and biotechnology techniques are current approaches used in plant breeding. At present work, the induced mutation and embryo zygotic culture techniques were used in order to characterize the radiosensitivity of avocado commercial varieties, Hass and California. The induced diversity in plant material was also evaluated in morphological seedling descriptors as: height seedling, diameter seedling neck, leaves number, length of principal root and secondary root number. The obtained results showed high susceptibility of both varieties to gamma rays. California was the higher sensitivity variety. Percentage of entire shoot induction showed clear dependence of radiation dose in both varieties. Thus dose range for mutagenesis was determined. In general, variation of morphological seedling descriptors not was clearly agreed to increase of radiation dose. In addition, the results suggested that variation in morphological seedling descriptors also could be depending of genotypes. The useful of mature embryo culture of avocado for improvement of breeding approaches in this crop, was discussed.
Lavarez, Roman Padilla; Espen, Pierr M. Van; Janssens, K; Schalm, O.; Wei, F. Z.; Quevedo, A.
μXRF analysis of decoration motifs on Majolica pottery Proceedings Article
En: 3. NURT 2001 , La Habana (Cuba), 22-26 Oct 2001, 2001, ISBN: 959-7136-12-0.
Resumen | Enlaces | BibTeX | Etiquetas:
@inproceedings{padillalavarez_vanespen_janssens_schalm_wei_quevedo_2001,
title = {μXRF analysis of decoration motifs on Majolica pottery},
author = {Roman Padilla Lavarez and Pierr M. Van Espen and K Janssens and O. Schalm and F. Z. Wei and A. Quevedo},
url = {https://inis.iaea.org/records/w2kg3-fmp82
http://www.ceaden.cu/wp-content/uploads/2026/03/cult15f.pdf},
isbn = {959-7136-12-0},
year = {2001},
date = {2001-01-01},
urldate = {2001-01-01},
booktitle = {3. NURT 2001 , La Habana (Cuba), 22-26 Oct 2001},
abstract = {μXRF analysis of decoration motifs on Majolica pottery in fragments corresponding to several Majolica types was carried out using an spectrometer comprising a low power Mo X-ray tube and a elliptic-shape concentration lens with a 60 um spot. Both surface scanning and spot measurements were carried a out, allowing the qualitative identification of the inorganic pigments used for the surface painting decoration and the quantitative analysis of the main glaze composition. The absence of interference signal arising from the excitation on the underlying paste when analysing thin-lead glazing was evaluated, allowing ensuring the suitable of the analytical procedures. A distinction was found between different types of majolica by the composition of the lead tin glaze enamel and by the presence of other elements in the blue, black and orange decoration.},
keywords = {},
pubstate = {published},
tppubtype = {inproceedings}
}
μXRF analysis of decoration motifs on Majolica pottery in fragments corresponding to several Majolica types was carried out using an spectrometer comprising a low power Mo X-ray tube and a elliptic-shape concentration lens with a 60 um spot. Both surface scanning and spot measurements were carried a out, allowing the qualitative identification of the inorganic pigments used for the surface painting decoration and the quantitative analysis of the main glaze composition. The absence of interference signal arising from the excitation on the underlying paste when analysing thin-lead glazing was evaluated, allowing ensuring the suitable of the analytical procedures. A distinction was found between different types of majolica by the composition of the lead tin glaze enamel and by the presence of other elements in the blue, black and orange decoration.
Zamboni, C. B.; Zahn, G. S.; Figueredo, A. M. G.; Madi, T. F.; Yoriyaz, H.; Lima, R. B.; Shtejer, K.; Jr, L. Dalaqua
A neutron irradiator to perform nuclear activation Proceedings Article
En: 3. NURT 2001 , La Habana (Cuba), 22-26 Oct 2001, 2001, ISBN: 959-7136-12-0.
Resumen | Enlaces | BibTeX | Etiquetas:
@inproceedings{zamboni_zahn_figueredo_madi_yoriyaz_lima_shtejer_dalaquajr_etal._2001,
title = {A neutron irradiator to perform nuclear activation},
author = {C. B. Zamboni and G. S. Zahn and A. M. G. Figueredo and T. F. Madi and H. Yoriyaz and R. B. Lima and K. Shtejer and L. Dalaqua Jr},
url = {https://inis.iaea.org/records/pvchn-qby96
http://www.ceaden.cu/wp-content/uploads/2026/03/ra-ph09f.pdf},
isbn = {959-7136-12-0},
year = {2001},
date = {2001-01-01},
urldate = {2001-01-01},
booktitle = {3. NURT 2001 , La Habana (Cuba), 22-26 Oct 2001},
abstract = {The development of appropriate nuclear instrumentation to perform neutron activation analyze (NAA), using thermal and fast neutrons, can be useful to investigate materials outside the reactor premises. Considering this fact, a small size neutron irradiator prototype was developed at IPEN facilities (Instituto de Pesquisas Energeticas e Nucleares - Brazil). Basically, this prototype consists of a cylinder of 1200 mm long and 985 mm diameter (filled with paraffin) with two Am-Be sources (600GBq each) arranged in the longitudinal direction of its geometric center. The material to be irradiated is positioned at a radial direction of the cylinder between the two Am-Be sources. The main advantage of this irradiator is a very stable neutron flux eliminating the use of standard material (measure of the induced activity in the sample by comparative method). This way the process became agile, practical and economic, but quantities at mg levels of samples are necessary to achieve good sensitivity, when the material has a low microscopy neutron cross section. As fast and thermal neutron can be used, the flux distribution, for both, were calculated and the prototype performance is discussed.},
keywords = {},
pubstate = {published},
tppubtype = {inproceedings}
}
The development of appropriate nuclear instrumentation to perform neutron activation analyze (NAA), using thermal and fast neutrons, can be useful to investigate materials outside the reactor premises. Considering this fact, a small size neutron irradiator prototype was developed at IPEN facilities (Instituto de Pesquisas Energeticas e Nucleares - Brazil). Basically, this prototype consists of a cylinder of 1200 mm long and 985 mm diameter (filled with paraffin) with two Am-Be sources (600GBq each) arranged in the longitudinal direction of its geometric center. The material to be irradiated is positioned at a radial direction of the cylinder between the two Am-Be sources. The main advantage of this irradiator is a very stable neutron flux eliminating the use of standard material (measure of the induced activity in the sample by comparative method). This way the process became agile, practical and economic, but quantities at mg levels of samples are necessary to achieve good sensitivity, when the material has a low microscopy neutron cross section. As fast and thermal neutron can be used, the flux distribution, for both, were calculated and the prototype performance is discussed.
Macario, K. Damasio; Anjos, R. M.; Gomes, P. R. S.; Facure, A. D.; Elmore, M.; Coimbra, M.; Padron, I.; Najjar, R.; Kneip, L.; A., T.; Lima,
Accelerator mass spectrometry and the prehistoric occupation of the coast of rio de janeiro - brazil Proceedings Article
En: 3. NURT 2001 , La Habana (Cuba), 22-26 Oct 2001, 2001, ISBN: 959-7136-12-0.
Resumen | Enlaces | BibTeX | Etiquetas:
@inproceedings{damasiomacario_anjos_gomes_facure_elmore_coimbra_padron_najjar_kneip_lima_etal._2001,
title = {Accelerator mass spectrometry and the prehistoric occupation of the coast of rio de janeiro - brazil},
author = {K. Damasio Macario and R. M. Anjos and P. R. S. Gomes and A. D. Facure and M. Elmore and M. Coimbra and I. Padron and R. Najjar and L. Kneip and T. A. and Lima},
url = {https://inis.iaea.org/records/dbxqc-mge72
http://www.ceaden.cu/wp-content/uploads/2026/03/ra-ph19f.pdf},
isbn = {959-7136-12-0},
year = {2001},
date = {2001-01-01},
urldate = {2001-01-01},
booktitle = {3. NURT 2001 , La Habana (Cuba), 22-26 Oct 2001},
abstract = {The Accelerator Mass Spectrometry (AMS) technique is a very attractive method for mass spectrometry, since it allows determination of concentrations with sensitivity down to 1 atom of isotope in 1015 atoms, using few milligrams samples. A Tandem accelerator is used as a magnetic and electrostatic analyzer. The determination of these extremely low concentrations of rare isotopes, accelerated to the MeV range, is measured by the direct counting of the atoms by nuclear detection techniques. The AMS technique has been implemented recently in Brazil, at the Pelletron 8UD Tandem accelerator (Sao Paulo), following many improvements on the ion source, VGM control, machine parameters control and detection system. In this contribution we report an important application on AMS on archaeological studies, performed at the Prime Lab (USA), on the dating of ceramics, bones, charcoals, nuts and shells samples of the of the coast of Rio de Janeiro. The main objective of this work is to improve the present knowledge on the occupation of Brazil by the Indians in the prehistoric period, studying archaeological sites located in Rio de Janeiro. Studies show that the Brazilian coast was first occupied in the beginning of the Holocene, with the settlements of the collectors of mollusk, builders of shell mounds, called Sambaquis. The word is of Tupi etymology, tamba meaning shellfish and ki to pile up. The Tupi were a horticultural/potter group who used to live on the Brazilian coast at the time of the European arrivals; they coined the term that describes the main characteristic of the sites - the accumulation of great quantities of mollusk shells. One of objectives of this research is to understand those societies functioning structure, spatial ordering, interaction in the environment and their transformation processes, from the study of their remains. It is intended to analyze the region occupation process dynamics and search for possible links between the pre-pottery population socio-cultural system destabilization, from the study of the relation between fishermen-collectors group (builders of shell mounds) and horticulturist, ceramics manufacturers group. Another objective is to compare information from the this area to data available from the entire national territory in order to delimit the origin point of these groups and their expansion routes. The geographical identification of prehistoric routes depends exclusively on the relation between location/characterization of the archaeological sites and the radiocarbon dating.},
keywords = {},
pubstate = {published},
tppubtype = {inproceedings}
}
The Accelerator Mass Spectrometry (AMS) technique is a very attractive method for mass spectrometry, since it allows determination of concentrations with sensitivity down to 1 atom of isotope in 1015 atoms, using few milligrams samples. A Tandem accelerator is used as a magnetic and electrostatic analyzer. The determination of these extremely low concentrations of rare isotopes, accelerated to the MeV range, is measured by the direct counting of the atoms by nuclear detection techniques. The AMS technique has been implemented recently in Brazil, at the Pelletron 8UD Tandem accelerator (Sao Paulo), following many improvements on the ion source, VGM control, machine parameters control and detection system. In this contribution we report an important application on AMS on archaeological studies, performed at the Prime Lab (USA), on the dating of ceramics, bones, charcoals, nuts and shells samples of the of the coast of Rio de Janeiro. The main objective of this work is to improve the present knowledge on the occupation of Brazil by the Indians in the prehistoric period, studying archaeological sites located in Rio de Janeiro. Studies show that the Brazilian coast was first occupied in the beginning of the Holocene, with the settlements of the collectors of mollusk, builders of shell mounds, called Sambaquis. The word is of Tupi etymology, tamba meaning shellfish and ki to pile up. The Tupi were a horticultural/potter group who used to live on the Brazilian coast at the time of the European arrivals; they coined the term that describes the main characteristic of the sites - the accumulation of great quantities of mollusk shells. One of objectives of this research is to understand those societies functioning structure, spatial ordering, interaction in the environment and their transformation processes, from the study of their remains. It is intended to analyze the region occupation process dynamics and search for possible links between the pre-pottery population socio-cultural system destabilization, from the study of the relation between fishermen-collectors group (builders of shell mounds) and horticulturist, ceramics manufacturers group. Another objective is to compare information from the this area to data available from the entire national territory in order to delimit the origin point of these groups and their expansion routes. The geographical identification of prehistoric routes depends exclusively on the relation between location/characterization of the archaeological sites and the radiocarbon dating.
Alvarez, A. V.; Fuentes, J. L.; Mora, L.; Puldon, V.; Gomez, P. J.; Gallego, G.; Tohme, J.
Genetic diversity analysis in cuban traditional rice germplasm using micro satellite markers Proceedings Article
En: 3. NURT 2001 , La Habana (Cuba), 22-26 Oct 2001, 2001, ISBN: 959-7136-12-0.
Resumen | Enlaces | BibTeX | Etiquetas:
@inproceedings{alvarez_fuentes_mora_puldon_gomez_gallego_tohme_2001,
title = {Genetic diversity analysis in cuban traditional rice germplasm using micro satellite markers},
author = {A. V. Alvarez and J. L. Fuentes and L. Mora and V. Puldon and P. J. Gomez and G. Gallego and J. Tohme},
url = {https://inis.iaea.org/records/gaw65-eh334
http://www.ceaden.cu/wp-content/uploads/2026/03/plant21f.pdf},
isbn = {959-7136-12-0},
year = {2001},
date = {2001-01-01},
urldate = {2001-01-01},
booktitle = {3. NURT 2001 , La Habana (Cuba), 22-26 Oct 2001},
abstract = {At the present study, the potential of micro satellite markers to assess the extent of genetic variability in Cuban traditional rice varieties was proved. The work was aimed at identifying alternative genetic diversity pools in this material in comparison to the most important commercial cultivars used in Cuban rice breeding program. For this, 52 traditional accessions, eleven cultivars representing the most planted Cuban material during the last decades and two parent cultivars were studied.},
keywords = {},
pubstate = {published},
tppubtype = {inproceedings}
}
At the present study, the potential of micro satellite markers to assess the extent of genetic variability in Cuban traditional rice varieties was proved. The work was aimed at identifying alternative genetic diversity pools in this material in comparison to the most important commercial cultivars used in Cuban rice breeding program. For this, 52 traditional accessions, eleven cultivars representing the most planted Cuban material during the last decades and two parent cultivars were studied.
Miranda, E. F. Prieto; Gonzalez, G. Barrera
Dose rate influence in the response of the amber 3042 perspex Dosimeter, batch l Proceedings Article
En: 3. NURT 2001 , La Habana (Cuba), 22-26 Oct 2001, 2001, ISBN: 959-7136-12-0.
Resumen | Enlaces | BibTeX | Etiquetas:
@inproceedings{prietomiranda_barreragonzalez_2001,
title = {Dose rate influence in the response of the amber 3042 perspex Dosimeter, batch l},
author = {E. F. Prieto Miranda and G. Barrera Gonzalez},
url = {https://inis.iaea.org/records/p19mb-eay23
http://www.ceaden.cu/wp-content/uploads/2026/03/r-tec21f.pdf},
isbn = {959-7136-12-0},
year = {2001},
date = {2001-01-01},
urldate = {2001-01-01},
booktitle = {3. NURT 2001 , La Habana (Cuba), 22-26 Oct 2001},
abstract = {The answer of the dosimetry systems is affected by several factors , as the temperature, humidity, light, concentration of oxygen, dose rate, energy spectrum and one can also add the technological conditions of the irradiation process. It should be known as these factors influence in each one of the different dosimetry systems and this way to minimize their effect in the value of the absorbed dose and to obtain exact values . The objective of this paper is to know the influence of the dose rate in the value of the absorbed dose in the Amber 3042 Perspex dosimeters, Batch L, for different measurement wavelengths, as well as, the relation between the post-irradiation time and the induced specific absorbance value in function of the absorbed dose.},
keywords = {},
pubstate = {published},
tppubtype = {inproceedings}
}
The answer of the dosimetry systems is affected by several factors , as the temperature, humidity, light, concentration of oxygen, dose rate, energy spectrum and one can also add the technological conditions of the irradiation process. It should be known as these factors influence in each one of the different dosimetry systems and this way to minimize their effect in the value of the absorbed dose and to obtain exact values . The objective of this paper is to know the influence of the dose rate in the value of the absorbed dose in the Amber 3042 Perspex dosimeters, Batch L, for different measurement wavelengths, as well as, the relation between the post-irradiation time and the induced specific absorbance value in function of the absorbed dose.
Otero, I.; Barrera, L.; Diaz, A.; Napoles, D.; Sanchez, E.
Verification the 25-kgy dose using the iso standard iso/tr 13409 for the production of bone grafts Proceedings Article
En: 3. NURT 2001 , La Habana (Cuba), 22-26 Oct 2001, 2001, ISBN: 959-7136-12-0.
Resumen | Enlaces | BibTeX | Etiquetas:
@inproceedings{otero_barrera_diaz_napoles_sanchez_2001,
title = {Verification the 25-kgy dose using the iso standard iso/tr 13409 for the production of bone grafts},
author = {I. Otero and L. Barrera and A. Diaz and D. Napoles and E. Sanchez},
url = {https://inis.iaea.org/records/1cbn2-8ca44
/wp-content/uploads/2026/03/r-tec12f.pdf},
isbn = {959-7136-12-0},
year = {2001},
date = {2001-01-01},
urldate = {2001-01-01},
booktitle = {3. NURT 2001 , La Habana (Cuba), 22-26 Oct 2001},
abstract = {The purpose of this work was to verify the 25 Gy dose using the ISO standard ISO/TR 13409 for the production of bone grafts from the Tissue Bank ORTOP of the Complejo Cientifico Ortopedico Internacional Frank Pais. We performed two principal microbiological activities: bioburden estimate, pre-sterilization count plus a compensation for the efficiency of the recovery method, by ISO 11737-1 and test of sterility by ISO 11737-2. The techniques for Bioburden estimation could be direct or indirect. Choice of direct vs. indirect depends on number of contaminating micro-organisms, product configuration, ability to remove microbial contamination, effect of removal method on microbial viability, types and location of micro-organisms, nature of product and culture conditions. For a test of sterility, he product unit or SIP putted direct immersion in educated culture medium and incubate. Keep precaution to minimize level to the false positives is necessary.},
keywords = {},
pubstate = {published},
tppubtype = {inproceedings}
}
The purpose of this work was to verify the 25 Gy dose using the ISO standard ISO/TR 13409 for the production of bone grafts from the Tissue Bank ORTOP of the Complejo Cientifico Ortopedico Internacional Frank Pais. We performed two principal microbiological activities: bioburden estimate, pre-sterilization count plus a compensation for the efficiency of the recovery method, by ISO 11737-1 and test of sterility by ISO 11737-2. The techniques for Bioburden estimation could be direct or indirect. Choice of direct vs. indirect depends on number of contaminating micro-organisms, product configuration, ability to remove microbial contamination, effect of removal method on microbial viability, types and location of micro-organisms, nature of product and culture conditions. For a test of sterility, he product unit or SIP putted direct immersion in educated culture medium and incubate. Keep precaution to minimize level to the false positives is necessary.
Perez, N.; Padron, I.
Fast neutron and gamma-ray transmission technique in mixed samples. MCNP calculations Proceedings Article
En: 3. NURT 2001 , La Habana (Cuba), 22-26 Oct 2001, 2001, ISBN: 959-7136-12-0.
Resumen | Enlaces | BibTeX | Etiquetas:
@inproceedings{perez_padron_2001,
title = {Fast neutron and gamma-ray transmission technique in mixed samples. MCNP calculations},
author = {N. Perez and I. Padron},
url = {https://inis.iaea.org/records/xwt8y-84272
/wp-content/uploads/2026/03/ra-ph23f.pdf},
isbn = {959-7136-12-0},
year = {2001},
date = {2001-01-01},
urldate = {2001-01-01},
booktitle = {3. NURT 2001 , La Habana (Cuba), 22-26 Oct 2001},
abstract = {In this paper the moisture in sand and also the sulfur content in toluene have been described by using the simultaneous fast neutron/gamma transmission technique (FNGT). Monte Carlo calculations show that it is possible to apply this technique with accelerator-based and isotopic neutron sources in the on-line analysis to perform the product quality control, specifically in the building materials industry and the petroleum one. It has been used particles from a 14MeV neutron generator and also from an Am-Be neutron source. The estimation of optimal system parameters like the efficiency, detection time, hazards and costs were performed in order to compare both neutron sources.},
keywords = {},
pubstate = {published},
tppubtype = {inproceedings}
}
In this paper the moisture in sand and also the sulfur content in toluene have been described by using the simultaneous fast neutron/gamma transmission technique (FNGT). Monte Carlo calculations show that it is possible to apply this technique with accelerator-based and isotopic neutron sources in the on-line analysis to perform the product quality control, specifically in the building materials industry and the petroleum one. It has been used particles from a 14MeV neutron generator and also from an Am-Be neutron source. The estimation of optimal system parameters like the efficiency, detection time, hazards and costs were performed in order to compare both neutron sources.
Ramos, P. Lam; Fonseca, D. J. Frías; Garcia, M. A. González; Lambert, D. E. Aguiar; Alvarez, J. R. Estévez; González, I. Pupo; Sánchez, D. R. López
Determination of light rare earths and other elements in Cuban soils Artículo de revista
En: Journal of Radioanalytical and Nuclear Chemistry, vol. 247, no 3, pp. 583–587, 2001, ISSN: 1588-2780.
Resumen | Enlaces | BibTeX | Etiquetas:
@article{LamRamos2001,
title = {Determination of light rare earths and other elements in Cuban soils},
author = {P. Lam Ramos and D. J. Frías Fonseca and M. A. González Garcia and D. E. Aguiar Lambert and J. R. Estévez Alvarez and I. Pupo González and D. R. López Sánchez},
doi = {10.1023/a:1010603131648},
issn = {1588-2780},
year = {2001},
date = {2001-01-01},
urldate = {2001-01-01},
journal = {Journal of Radioanalytical and Nuclear Chemistry},
volume = {247},
number = {3},
pages = {583–587},
publisher = {Springer Science and Business Media LLC},
abstract = {The objective of the present study was the elaboration of a procedure for the determination of Y, La, Ce, Pr and Nd in soils by spectrophotometry with Arsenazo III preceded by a separation-concentration stage, which includes coprecipitation and ion exchange. Multielement analysis by energy dispersive X-ray fluorescence (including Y, La, Ce and Nd) and flame atomic absorption spectrophotometry was carried out simultaneously in order to obtain a general characterization of the soil samples. Certified reference materials and statistical intercomparison of the obtained results were used to evaluate the accuracy of the methods. The precision was examined by analyzing replicate samples.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
The objective of the present study was the elaboration of a procedure for the determination of Y, La, Ce, Pr and Nd in soils by spectrophotometry with Arsenazo III preceded by a separation-concentration stage, which includes coprecipitation and ion exchange. Multielement analysis by energy dispersive X-ray fluorescence (including Y, La, Ce and Nd) and flame atomic absorption spectrophotometry was carried out simultaneously in order to obtain a general characterization of the soil samples. Certified reference materials and statistical intercomparison of the obtained results were used to evaluate the accuracy of the methods. The precision was examined by analyzing replicate samples.
Alvarez, Roman Padilla; Gonzalez, Miriam Celaya; Rodriguez, Pedro Pablo Godo; Pla, Rita Rosa; Rossi, Eduardo Montoya; Espen, Pierr M. Van
Classification of the regional aborigine ceramic production and its distribution in the central region of Cuba based on NAA and EPMA Proceedings Article
En: 3. NURT 2001 , La Habana (Cuba), 22-26 Oct 2001, 2001, ISBN: 959-7136-12-0.
Resumen | Enlaces | BibTeX | Etiquetas:
@inproceedings{padillalavarez_celayagonzalez_godorodriguez_pla_montoyarossi_vanespen_etal._2001,
title = {Classification of the regional aborigine ceramic production and its distribution in the central region of Cuba based on NAA and EPMA},
author = {Roman Padilla Alvarez and Miriam Celaya Gonzalez and Pedro Pablo Godo Rodriguez and Rita Rosa Pla and Eduardo Montoya Rossi and Pierr M. Van Espen},
url = {https://inis.iaea.org/records/tawkc-spx11
/wp-content/uploads/2026/03/cult20f.pdf},
isbn = {959-7136-12-0},
year = {2001},
date = {2001-01-01},
urldate = {2001-01-01},
booktitle = {3. NURT 2001 , La Habana (Cuba), 22-26 Oct 2001},
abstract = {The archaeological researches in Cuba have been oriented mainly to the study of both the eastern and westerns territories of the island: the former province Oriente, considered as the location with the higher density of Agroalfarero communities; and the former provinces of Pinar del Rio, La Havana and Matanzas where mostly Archaic sites have been discovered. However, and in despite of the rich diversity and relevance of the central region of Cuba, this region has been only partially and incompletely studied. The variety in the developed of diverse social and economic structures located in the heart of the Cuban archipelago the central region was the centre of the confluence of communities arriving from the eastern territories herding strong agricultural and pottery traditions interacted with the Archaic already established centuries ago in these territories and successive transculturation and assimilation processes should take place. The classification of the aborigine pottery manufacture of the centro region in three major stylistic variations (Jagua, Yayabo and Yaguajay) is described in details on the lathes interpretations of Celaya and Godo, 1998 an the origin and format transformation of the themes represented in the pottery The suitable of combining Neutron Activation Analysis and electron Probe Microanalysis for the purposes of establishing compositional classification of archaeological pottery is in several compositional groups served as new evidence to the discussion of ceramic production and regional interaction between the Subtaino and Archaic settlements},
keywords = {},
pubstate = {published},
tppubtype = {inproceedings}
}
The archaeological researches in Cuba have been oriented mainly to the study of both the eastern and westerns territories of the island: the former province Oriente, considered as the location with the higher density of Agroalfarero communities; and the former provinces of Pinar del Rio, La Havana and Matanzas where mostly Archaic sites have been discovered. However, and in despite of the rich diversity and relevance of the central region of Cuba, this region has been only partially and incompletely studied. The variety in the developed of diverse social and economic structures located in the heart of the Cuban archipelago the central region was the centre of the confluence of communities arriving from the eastern territories herding strong agricultural and pottery traditions interacted with the Archaic already established centuries ago in these territories and successive transculturation and assimilation processes should take place. The classification of the aborigine pottery manufacture of the centro region in three major stylistic variations (Jagua, Yayabo and Yaguajay) is described in details on the lathes interpretations of Celaya and Godo, 1998 an the origin and format transformation of the themes represented in the pottery The suitable of combining Neutron Activation Analysis and electron Probe Microanalysis for the purposes of establishing compositional classification of archaeological pottery is in several compositional groups served as new evidence to the discussion of ceramic production and regional interaction between the Subtaino and Archaic settlements
Lavin, Lester; Delgado, Alain; Capote, Roberto
Improvements of the pairing correction fro barrier code: ground state and saddle point deformation of the thorium isotopes Proceedings Article
En: Nuclear Structure: Proceedings of the Conference: Bologna 2000 Structure of the Nucleus at the Dawn of the Century: Bologna, Italy, 29 May-3 June 2000, pp. 249, World Scientific 2001.
Resumen | Enlaces | BibTeX | Etiquetas:
@inproceedings{lavin2001code,
title = {Improvements of the pairing correction fro barrier code: ground state and saddle point deformation of the thorium isotopes},
author = {Lester Lavin and Alain Delgado and Roberto Capote},
url = {https://books.google.com.cu/books?hl=es&lr=&id=EH1pcmap4KEC&oi=fnd&pg=PA249&ots=l9qEiLw0kP&sig=uAerpLvnb8d9_a3cM8VMxSrla0Q&redir_esc=y#v=onepage&q&f=false},
doi = {10.1142/4796},
year = {2001},
date = {2001-01-01},
urldate = {2001-01-01},
booktitle = {Nuclear Structure: Proceedings of the Conference: Bologna 2000 Structure of the Nucleus at the Dawn of the Century: Bologna, Italy, 29 May-3 June 2000},
volume = {2},
pages = {249},
organization = {World Scientific},
abstract = {An implementation on the BARRIER code of a new method for the election of pairing parameters proposed by Nix and Möller has been carried out. An approximate projection method was used to overcome particle conservation problems of the BCS pairing calculation. Using the universal Woods-Saxon potential, the stability of the pairing correction was studied, over the basis of changing the number of levels above and below Fermi level used for pairing calculations. The improved code was used to obtain ground state and saddle point deformation for several thorium isotopes, providing single particle states for microscopical level densities calculations.},
keywords = {},
pubstate = {published},
tppubtype = {inproceedings}
}
An implementation on the BARRIER code of a new method for the election of pairing parameters proposed by Nix and Möller has been carried out. An approximate projection method was used to overcome particle conservation problems of the BCS pairing calculation. Using the universal Woods-Saxon potential, the stability of the pairing correction was studied, over the basis of changing the number of levels above and below Fermi level used for pairing calculations. The improved code was used to obtain ground state and saddle point deformation for several thorium isotopes, providing single particle states for microscopical level densities calculations.
Capote, Roberto; Mainegra, Ernesto; López, Ernesto
Anisotropy functions for low energy interstitial brachytherapy sources: an EGS4 Monte Carlo study Artículo de revista
En: Phys. Med. Biol., vol. 46, no 1, pp. 135–150, 2001, ISSN: 1361-6560.
Resumen | Enlaces | BibTeX | Etiquetas:
@article{Capote2000,
title = {Anisotropy functions for low energy interstitial brachytherapy sources: an EGS4 Monte Carlo study},
author = {Roberto Capote and Ernesto Mainegra and Ernesto López},
doi = {10.1088/0031-9155/46/1/310},
issn = {1361-6560},
year = {2001},
date = {2001-01-01},
urldate = {2001-01-01},
journal = {Phys. Med. Biol.},
volume = {46},
number = {1},
pages = {135–150},
publisher = {IOP Publishing},
abstract = {Anisotropy functions for low energy interstitial brachytherapy sources are examined. Absolute dose rates around 103Pd seed model 200 and 125I seed models 6702 and 6711 have been estimated by means of the EGS4 Monte Carlo simulation system. The DLC-136/PHOTX cross section library, water molecular form factors, bound Compton scattering and Doppler broadening of the Compton-scattered photon energy were considered in the calculations. Following the formalism developed by the Interstitial Brachytherapy Collaborative Working Group, anisotropy functions, F(r,θ), have been calculated. Our Monte Carlo results were compared against a limited set of measured data selected from the literature and other Monte Carlo results. Binding corrections and phantom material selection have been found to have no influence on the anisotropy function. The accuracy of the geometrical source models used for the Monte Carlo calculations was validated against experimental measurements of in-air relative fluence at 100 cm from the source. More detailed knowledge about the geometrical design of 103Pd seed model 200 is needed in order to improve the agreement with experimentally measured in-air fluence. Values for in-air fluence of 125I model 6702 are sensitive to source position within the inner seed cylinder. Excellent agreement between calculated and measured in-air fluence is found for 125I model 6711. It was observed that using in-air relative fluence at 100 cm from the source to calculate the anisotropy function yields a less anisotropic dose distribution at distances close to the source than full Monte Carlo simulation, in contradiction with experimental data. Our results have estimated statistical uncertainties of 1%-3% at the 1σ level within clinically relevant regions, but contain systematic uncertainties related to the assumed geometrical details.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Anisotropy functions for low energy interstitial brachytherapy sources are examined. Absolute dose rates around 103Pd seed model 200 and 125I seed models 6702 and 6711 have been estimated by means of the EGS4 Monte Carlo simulation system. The DLC-136/PHOTX cross section library, water molecular form factors, bound Compton scattering and Doppler broadening of the Compton-scattered photon energy were considered in the calculations. Following the formalism developed by the Interstitial Brachytherapy Collaborative Working Group, anisotropy functions, F(r,θ), have been calculated. Our Monte Carlo results were compared against a limited set of measured data selected from the literature and other Monte Carlo results. Binding corrections and phantom material selection have been found to have no influence on the anisotropy function. The accuracy of the geometrical source models used for the Monte Carlo calculations was validated against experimental measurements of in-air relative fluence at 100 cm from the source. More detailed knowledge about the geometrical design of 103Pd seed model 200 is needed in order to improve the agreement with experimentally measured in-air fluence. Values for in-air fluence of 125I model 6702 are sensitive to source position within the inner seed cylinder. Excellent agreement between calculated and measured in-air fluence is found for 125I model 6711. It was observed that using in-air relative fluence at 100 cm from the source to calculate the anisotropy function yields a less anisotropic dose distribution at distances close to the source than full Monte Carlo simulation, in contradiction with experimental data. Our results have estimated statistical uncertainties of 1%-3% at the 1σ level within clinically relevant regions, but contain systematic uncertainties related to the assumed geometrical details.
Capote, Roberto; Mainegra, Ernesto; López, Ernesto
Anisotropy functions for palladium model 200 interstitial brachytherapy source Capítulo de libro
En: Hadrons, Nuclei and Applications, pp. 451-454, 2001.
Resumen | Enlaces | BibTeX | Etiquetas:
@inbook{doi:10.1142/9789812810922_0085,
title = {Anisotropy functions for palladium model 200 interstitial brachytherapy source},
author = {Roberto Capote and Ernesto Mainegra and Ernesto López},
url = {https://www.worldscientific.com/doi/abs/10.1142/9789812810922_0085},
doi = {10.1142/9789812810922_0085},
year = {2001},
date = {2001-01-01},
urldate = {2001-01-01},
booktitle = {Hadrons, Nuclei and Applications},
pages = {451-454},
abstract = {Anisotropy function for low energy 103Pd seed model 200 source is examined. Absolute dose rates have been estimated by mean of the EGS4 Monte Carlo Simulation System. DLC-136/PHOTX cross section library, water molecular form factors, bound Compton scattering and Doppler broadening of the Compton-scattered photon energy were considered in the calculations. Binding corrections and phantom material selection have been found to have no influence on the anisotropy function. The accuracy of the geometrical source models used for the Monte Carlo calculations was validated against experimental measurements of in-air relative fluence at 100 cm from the source. More detailed knowledge about geometrical design of 103Pd seed model 200 is needed in order to improve the agreement with experimentally measured in-air fluence. Variations due to differences in the design of Pd seeds' end welds are responsible for large discrepancies between calculation and experiment under 40°. Our results have estimated statistical uncertainties of 0.5%-3.0% at 1σ level within clinically relevant regions, but could contain systematic uncertainties related to the assumed geometrical details. These systematic uncertainties could be as large as 10% in some cases.},
keywords = {},
pubstate = {published},
tppubtype = {inbook}
}
Anisotropy function for low energy 103Pd seed model 200 source is examined. Absolute dose rates have been estimated by mean of the EGS4 Monte Carlo Simulation System. DLC-136/PHOTX cross section library, water molecular form factors, bound Compton scattering and Doppler broadening of the Compton-scattered photon energy were considered in the calculations. Binding corrections and phantom material selection have been found to have no influence on the anisotropy function. The accuracy of the geometrical source models used for the Monte Carlo calculations was validated against experimental measurements of in-air relative fluence at 100 cm from the source. More detailed knowledge about geometrical design of 103Pd seed model 200 is needed in order to improve the agreement with experimentally measured in-air fluence. Variations due to differences in the design of Pd seeds' end welds are responsible for large discrepancies between calculation and experiment under 40°. Our results have estimated statistical uncertainties of 0.5%-3.0% at 1σ level within clinically relevant regions, but could contain systematic uncertainties related to the assumed geometrical details. These systematic uncertainties could be as large as 10% in some cases.
1999
Rodriguez, G. Capote; Hidalgo, L. Calderin; Garcia, L. F. Desdin
Study of the influence of crystalline defects in solids on beta backscattering Artículo de revista
En: Revista Cubana de Física, vol. 16, no 2, pp. 109-113, 1999.
Resumen | Enlaces | BibTeX | Etiquetas:
@article{nokey_20,
title = {Study of the influence of crystalline defects in solids on beta backscattering},
author = {G. Capote Rodriguez and L. Calderin Hidalgo and L. F. Desdin Garcia},
url = {https://www.revistacubanadefisica.org/index.php/rcf/issue/view/40},
year = {1999},
date = {1999-07-01},
journal = {Revista Cubana de Física},
volume = {16},
number = {2},
pages = {109-113},
abstract = {The interaction of radiation with defects in crystal is important from the scientific and practical point of view. This investigation reports the results of different experiments carry out to study the crystal defects' influence on the beta backscattering coefficient. The study was undertaken using cooper and aluminum samples and different types of defects: vacancy (changing the temperature) and dislocation (by plastic deformation). The experiment was carried out in such way that was possible to obtain information about the interaction of beta particles only with vacancy, only with dislocations and with both types of defects. The results show that this type of radiation is sensible to the different types of defects and its concentration.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
The interaction of radiation with defects in crystal is important from the scientific and practical point of view. This investigation reports the results of different experiments carry out to study the crystal defects' influence on the beta backscattering coefficient. The study was undertaken using cooper and aluminum samples and different types of defects: vacancy (changing the temperature) and dislocation (by plastic deformation). The experiment was carried out in such way that was possible to obtain information about the interaction of beta particles only with vacancy, only with dislocations and with both types of defects. The results show that this type of radiation is sensible to the different types of defects and its concentration.
Alvarez, R. Padilla; Cano, E. Chinea; Alvarez, J. R. Estévez; Greaves, E. D.
Instrumental detection limits in total reflection X-ray fluorescence: Comparison of cut-off and monochromatic excitation devices Artículo de revista
En: J Radioanal Nucl Chem, vol. 240, no 2, pp. 517-522, 1999, ISSN: 1588-2780.
Resumen | Enlaces | BibTeX | Etiquetas:
@article{Alvarez1999,
title = {Instrumental detection limits in total reflection X-ray fluorescence: Comparison of cut-off and monochromatic excitation devices},
author = {R. Padilla Alvarez and E. Chinea Cano and J. R. Estévez Alvarez and E. D. Greaves},
doi = {10.1007/bf02349406},
issn = {1588-2780},
year = {1999},
date = {1999-05-01},
urldate = {1999-05-01},
journal = {J Radioanal Nucl Chem},
volume = {240},
number = {2},
pages = {517-522},
publisher = {Springer Science and Business Media LLC},
abstract = {“Cut-off” reflectors, which allow obtaining a reflected beam with almost no high energy radiation, as well as different monochromator devices that reflect a beam of monoenergetic and polarized radiation are the most widely employed artifacts to perform the excitation radiation improvement in analytical “non-expensive” TR spectrometers. The aim of this work consisted in testing several monochromator devices: a multilayer structured mirror for soft X-rays (0.7–12.5 nm), as well as different bent and flat crystals of wavelength dispersive spectrometers. The achieved instrumental detection limits for the selected monochromator device are compared with the values obtained using a Suprasil Cut-off reflector and a C-W multilayer (d∼5 nm). Several human corporal fluid samples were analyzed to compare the spectral characteristics when using the Cut-Off Reflector and the RAP flat crystal, respectively.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
“Cut-off” reflectors, which allow obtaining a reflected beam with almost no high energy radiation, as well as different monochromator devices that reflect a beam of monoenergetic and polarized radiation are the most widely employed artifacts to perform the excitation radiation improvement in analytical “non-expensive” TR spectrometers. The aim of this work consisted in testing several monochromator devices: a multilayer structured mirror for soft X-rays (0.7–12.5 nm), as well as different bent and flat crystals of wavelength dispersive spectrometers. The achieved instrumental detection limits for the selected monochromator device are compared with the values obtained using a Suprasil Cut-off reflector and a C-W multilayer (d∼5 nm). Several human corporal fluid samples were analyzed to compare the spectral characteristics when using the Cut-Off Reflector and the RAP flat crystal, respectively.
Martin, D. Medina; Gonzalez, F. Rodriguez; Romeu, E. Arista; Barreto, M. Diaz; Mayor, R. Fraxedas
Validation of the news computerizing renography system developed of the CEADEN in order to improve the renography system existing at the National Nephrology Institute Proceedings Article
En: 2. NURT 1999 , La Habana (Cuba), 26-29 Oct 1999, 1999, ISBN: 959-7136-04-X.
Resumen | Enlaces | BibTeX | Etiquetas:
@inproceedings{medinamartin_rodriguezgonzalez_aristaromeu_diazbarreto_fraxedasmayor_1999,
title = {Validation of the news computerizing renography system developed of the CEADEN in order to improve the renography system existing at the National Nephrology Institute},
author = {D. Medina Martin and F. Rodriguez Gonzalez and E. Arista Romeu and M. Diaz Barreto and R. Fraxedas Mayor},
url = {https://inis.iaea.org/records/73vwh-0s536
/wp-content/uploads/2026/03/ELEC04.pdf},
isbn = {959-7136-04-X},
year = {1999},
date = {1999-01-01},
urldate = {1999-01-01},
booktitle = {2. NURT 1999 , La Habana (Cuba), 26-29 Oct 1999},
abstract = {The isotopic renography is a technique that permits the evaluation of renal and the urinary tract diseases. In our country is not possible performs these studies only using gamma cameras due to the high costs of this technique, so the renography results an important method for this. It was developed a computerizing renography system in order to improve the renography system existing at the National Nephrology Institute (INEF), which is the head institute in this field in Cuba. The computerizing renography system includes a detection system, an interface card and software. As detection system was using the existing at the Institute. Specialists of the CEADEN using the high experience of the INEF and the international standards developed the card and software. The new software has several advantages with respect to the ancient, as example: normalized and standardizing control and processing protocols, a higher number of studies, the conduction and parameters validation of the studies, help system included, a database with the study results, teaching possibilities, etc. The validation of the news card and software was carried out simultaneously with the old system during 1 year approximately. This permitted to compare the main parameters and results in both systems. The results obtained were analyzed using statistical programs. As conclusion we obtained that both systems have a high correlation, so it is possible to substitute the old system with a more powerful and integral renography system.},
keywords = {},
pubstate = {published},
tppubtype = {inproceedings}
}
The isotopic renography is a technique that permits the evaluation of renal and the urinary tract diseases. In our country is not possible performs these studies only using gamma cameras due to the high costs of this technique, so the renography results an important method for this. It was developed a computerizing renography system in order to improve the renography system existing at the National Nephrology Institute (INEF), which is the head institute in this field in Cuba. The computerizing renography system includes a detection system, an interface card and software. As detection system was using the existing at the Institute. Specialists of the CEADEN using the high experience of the INEF and the international standards developed the card and software. The new software has several advantages with respect to the ancient, as example: normalized and standardizing control and processing protocols, a higher number of studies, the conduction and parameters validation of the studies, help system included, a database with the study results, teaching possibilities, etc. The validation of the news card and software was carried out simultaneously with the old system during 1 year approximately. This permitted to compare the main parameters and results in both systems. The results obtained were analyzed using statistical programs. As conclusion we obtained that both systems have a high correlation, so it is possible to substitute the old system with a more powerful and integral renography system.
Rapado, Manuel; Altanes, Sonia; Sainz, Dianelys; Prado, Stalina; Zaldivar, Dionisio; Chong, Boris
Synthesis of poly (acrylamide-co-metacrylic acid) hydrogels by means of gamma irradiation techniques: influence of absorbed dose on the swelling process Proceedings Article
En: 2. NURT 1999 , La Habana (Cuba), 26-29 Oct 1999, 1999, ISBN: 959-7136-04-X.
Resumen | Enlaces | BibTeX | Etiquetas:
@inproceedings{rapado_altanes_sainz_prado_zaldivar_chong_1999,
title = {Synthesis of poly (acrylamide-co-metacrylic acid) hydrogels by means of gamma irradiation techniques: influence of absorbed dose on the swelling process},
author = {Manuel Rapado and Sonia Altanes and Dianelys Sainz and Stalina Prado and Dionisio Zaldivar and Boris Chong},
url = {https://inis.iaea.org/records/b0b8w-4m491
/wp-content/uploads/2026/03/IND21.pdf},
isbn = {959-7136-04-X},
year = {1999},
date = {1999-01-01},
urldate = {1999-01-01},
booktitle = {2. NURT 1999 , La Habana (Cuba), 26-29 Oct 1999},
abstract = {In this report gamma radiation techniques were performed a double function of proceeding the processes of polymerization and crosslinking with the advantage of avoid the uses of chemicals crosslinks. The influence of absorbed dose on the swelling ratio as a function of pH have been presented. For these hydrogels, swelling studies indicated that swelling decrease with the increase of the absorbed dose from 10 to 50 kGy. It was confirmed that at the firsts stages (100-150 min) the diffusion studies were in accordance with Fickian behavior and the diffusion coefficients were obtained, whereas the latest stages were in good agreement with second-order diffusion kinetics proposed by Schott 1 .These news hydrogels exhibit a higher degree of swelling, a factor that, a priori, assures high biocompatibility because it increases the similarity with living tissues.},
keywords = {},
pubstate = {published},
tppubtype = {inproceedings}
}
In this report gamma radiation techniques were performed a double function of proceeding the processes of polymerization and crosslinking with the advantage of avoid the uses of chemicals crosslinks. The influence of absorbed dose on the swelling ratio as a function of pH have been presented. For these hydrogels, swelling studies indicated that swelling decrease with the increase of the absorbed dose from 10 to 50 kGy. It was confirmed that at the firsts stages (100-150 min) the diffusion studies were in accordance with Fickian behavior and the diffusion coefficients were obtained, whereas the latest stages were in good agreement with second-order diffusion kinetics proposed by Schott 1 .These news hydrogels exhibit a higher degree of swelling, a factor that, a priori, assures high biocompatibility because it increases the similarity with living tissues.
Echevarria, J.; Sendoya, F.; Dominguez, H.; Lopez, M.; Amalfi, J.; Suarez, J.; Rondon, S.; Perez, E.; Fernandez, L.; V.,; Herrera,
Main causes of failures in critical radius bends of fuel power plant superheater Proceedings Article
En: 2. NURT 1999 , La Habana (Cuba), 26-29 Oct 1999, 1999, ISBN: 959-7136-04-X.
Resumen | Enlaces | BibTeX | Etiquetas:
@inproceedings{echevarria_sendoya_dominguez_lopez_amalfi_suarez_rondon_perez_fernandez_herrera_etal._1999,
title = {Main causes of failures in critical radius bends of fuel power plant superheater},
author = {J. Echevarria and F. Sendoya and H. Dominguez and M. Lopez and J. Amalfi and J. Suarez and S. Rondon and E. Perez and L. Fernandez and V. and Herrera},
url = {https://inis.iaea.org/records/rbem6-dvz05
/wp-content/uploads/2026/03/IND11.pdf},
isbn = {959-7136-04-X},
year = {1999},
date = {1999-01-01},
urldate = {1999-01-01},
booktitle = {2. NURT 1999 , La Habana (Cuba), 26-29 Oct 1999},
abstract = {In this paper the authors made a resume of study carried out by materials laboratory of Centro de Estudios Aplicados al Desarrollo Nuclear. Establishment of the causes of the simultaneous failures and after cracking occurred in the neutral zone Of critical radius bends locating in high pressure superheater of fuel power plant long two years. Authors arrived to the conclusions that the main cause of simultaneously failures in the critical radius bends was the high sulfur content in the Steel of these bends and observed internal cracking in the plastic deformed zone (strike), made during construction of bends in the factory. These works was too Helpful in taking decision for changes all critical radiuses bends and avoid the decrease of generate electrical energy.},
keywords = {},
pubstate = {published},
tppubtype = {inproceedings}
}
In this paper the authors made a resume of study carried out by materials laboratory of Centro de Estudios Aplicados al Desarrollo Nuclear. Establishment of the causes of the simultaneous failures and after cracking occurred in the neutral zone Of critical radius bends locating in high pressure superheater of fuel power plant long two years. Authors arrived to the conclusions that the main cause of simultaneously failures in the critical radius bends was the high sulfur content in the Steel of these bends and observed internal cracking in the plastic deformed zone (strike), made during construction of bends in the factory. These works was too Helpful in taking decision for changes all critical radiuses bends and avoid the decrease of generate electrical energy.
Gonzalez, Maria C.; Caballero, Alberto; Mukandama, Jean Pierre; Ali, Mansoor Mohamed; Suarez, Lorenzo; Fuentes, Jorge L
En: 2. NURT 1999 , La Habana (Cuba), 26-29 Oct 1999, 1999, ISBN: 959-7136-04-X.
Resumen | Enlaces | BibTeX | Etiquetas:
@inproceedings{gonzalez_caballero_mukandama_mohamedali_suarez_fuentes_1999,
title = {Results of Breeding Tomato Programme (lycopesicon esculentum mill) for the obtaining of new tolerant varieties to low inputs hidric through the employment of the radioinduced mutation},
author = {Maria C. Gonzalez and Alberto Caballero and Jean Pierre Mukandama and Mansoor Mohamed Ali and Lorenzo Suarez and Jorge L Fuentes},
url = {https://inis.iaea.org/records/avt2f-veh94
/wp-content/uploads/2026/03/AGRI15.pdf},
isbn = {959-7136-04-X},
year = {1999},
date = {1999-01-01},
urldate = {1999-01-01},
booktitle = {2. NURT 1999 , La Habana (Cuba), 26-29 Oct 1999},
abstract = {Induced mutation have been mostly used in the improvement of different crops. This papers shows the main results of Breeding Tomato Programme. It was possible to select some promising lines with a good behavior under hidric stress.},
keywords = {},
pubstate = {published},
tppubtype = {inproceedings}
}
Induced mutation have been mostly used in the improvement of different crops. This papers shows the main results of Breeding Tomato Programme. It was possible to select some promising lines with a good behavior under hidric stress.
Abrahantes, A.; Herrera, E.; Lopez, N.; Alvarez, I.; Diaz, O.; Shtejer, K.
Determination of cross-sections and isomeric relations in threshold reactions with fast neutrons from radioisotopic source Proceedings Article
En: 2. NURT 1999 , La Habana (Cuba), 26-29 Oct 1999, 1999, ISBN: 959-7136-04-X.
Resumen | Enlaces | BibTeX | Etiquetas:
@inproceedings{abrahantes_herrera_lopez_alvarez_diaz_shtejer_1999,
title = {Determination of cross-sections and isomeric relations in threshold reactions with fast neutrons from radioisotopic source},
author = {A. Abrahantes and E. Herrera and N. Lopez and I. Alvarez and O. Diaz and K. Shtejer},
url = {https://inis.iaea.org/records/w54vw-3pm83
/wp-content/uploads/2026/03/WONP11.pdf},
isbn = {959-7136-04-X},
year = {1999},
date = {1999-01-01},
urldate = {1999-01-01},
booktitle = {2. NURT 1999 , La Habana (Cuba), 26-29 Oct 1999},
abstract = {Cross-sections of 113In(n,n')113Inm, 115In(n,n')115Inm, 27Al(n,p)27Mg and 27Al(n,a)24Na have been determined in absolute way. The experiment was carry out using a radio-isotopic neutron source of Pu-Be, with a intensity of 2.1 x 107 n.s-1, producing a neutron flux density of 1.7 x 105 n.cm-2.s-1. There is agreement between obtained results and the averages reported in the literature. Spatial distribution of the neutron flux density was calculated in two way. Finally a new experimental method is exposed to the determination in the isometric relation.},
keywords = {},
pubstate = {published},
tppubtype = {inproceedings}
}
Cross-sections of 113In(n,n')113Inm, 115In(n,n')115Inm, 27Al(n,p)27Mg and 27Al(n,a)24Na have been determined in absolute way. The experiment was carry out using a radio-isotopic neutron source of Pu-Be, with a intensity of 2.1 x 107 n.s-1, producing a neutron flux density of 1.7 x 105 n.cm-2.s-1. There is agreement between obtained results and the averages reported in the literature. Spatial distribution of the neutron flux density was calculated in two way. Finally a new experimental method is exposed to the determination in the isometric relation.
Rapado, M.; Sainz, D.; Altanes, S.; Prado, S.; Padron, S.; Salivar, D.; Chong, B.
Controlled 5-fluorouracil release from hydrogels of Poly (acrylamide-co-metacrylic acid) crosslinked by means of gamma irradiation techniques Proceedings Article
En: 2. NURT 1999 , La Habana (Cuba), 26-29 Oct 1999, 1999, ISBN: 959-7136-04-X.
Resumen | Enlaces | BibTeX | Etiquetas:
@inproceedings{rapado_sainz_altanes_prado_padron_salivar_chong_1999,
title = {Controlled 5-fluorouracil release from hydrogels of Poly (acrylamide-co-metacrylic acid) crosslinked by means of gamma irradiation techniques},
author = {M. Rapado and D. Sainz and S. Altanes and S. Prado and S. Padron and D. Salivar and B. Chong},
url = {https://inis.iaea.org/records/686gy-cfg59
/wp-content/uploads/2026/03/IND22.pdf},
isbn = {959-7136-04-X},
year = {1999},
date = {1999-01-01},
urldate = {1999-01-01},
booktitle = {2. NURT 1999 , La Habana (Cuba), 26-29 Oct 1999},
abstract = {This report present the results on entrapped a cytostatic 5-Fluorouracil (5-F) in polymeric matrixes named hydrogels of polyacrylamide co -metacrylic acid crosslinked by means of gamma radiation with doses of 10,30, and 30 kGy at 25 o C. The drug delivery was followed by HPLC. The behavior of 5 -Fu migration from polymeric network was analyze by Iguchi equation for plain structure systems. The diffusion coefficients were obtained and drug release was in accordance with Fickian behavior.},
keywords = {},
pubstate = {published},
tppubtype = {inproceedings}
}
This report present the results on entrapped a cytostatic 5-Fluorouracil (5-F) in polymeric matrixes named hydrogels of polyacrylamide co -metacrylic acid crosslinked by means of gamma radiation with doses of 10,30, and 30 kGy at 25 o C. The drug delivery was followed by HPLC. The behavior of 5 -Fu migration from polymeric network was analyze by Iguchi equation for plain structure systems. The diffusion coefficients were obtained and drug release was in accordance with Fickian behavior.
Alvarez, J. R. Estevez; Alvarez, A. Montero; Napoles, H. Jimenez; Lambert, D. Aguiar; Gonzalez, I. Pupo; Fonseca, D. Frias; Alvarez, R. Padilla; Ugarte, O. Munniz; Rodriguez, J. Molina; de Vera, S. Quicute
En: 2. NURT 1999 , La Habana (Cuba), 26-29 Oct 1999, 1999, ISBN: 959-7136-04-X.
Resumen | Enlaces | BibTeX | Etiquetas:
@inproceedings{nokey_22,
title = {Nuclear and related analytical methods applied to the determination of Cr, Ni, Cu, Zn, Cd and Pb during the studies of distribution of the metals between ferralitic - red soil and sorgo Plant},
author = {J. R. Estevez Alvarez and A. Montero Alvarez and H. Jimenez Napoles and D. Aguiar Lambert and I. Pupo Gonzalez and D. Frias Fonseca and R. Padilla Alvarez and O. Munniz Ugarte and J. Molina Rodriguez and S. Quicute de Vera},
url = {https://inis.iaea.org/records/vd9zw-p4a30
/wp-content/uploads/2026/03/ENV22.pdf},
isbn = {959-7136-04-X},
year = {1999},
date = {1999-01-01},
urldate = {1999-01-01},
booktitle = {2. NURT 1999 , La Habana (Cuba), 26-29 Oct 1999},
abstract = {Several studies about the influence of heavy metals onto the growth of vegetables have been carried out in Cuba by the Ministry of Agriculture with the aim to evaluate the effects resulting of the continuous application of fertilizers and other materials to the crop soils. The analysis of metal contents in soil and vegetable samples is often troublesome due to the low concentration levels to be determined. During the present work different EDXRF, AAS and ASV methods were applied and compared for the evaluation of Cr, Ni, Cu, Zn, Cd and Pb contents in ferralitic -red soil and sorgo plant samples. Several Certified Reference Materials (CRM) (inorganic and organic matrixes) were analyzed in order to evaluate the performance of the analytical procedures and the bias and precision of the results. A study was performed growing sorgo plants in several series of pots where different quantities of metals were added to the soil substrate. The observed correlation between the metal contents in soil and plants resulting after such experiment, as well as the influence of different additions of each metal onto the plant growth is also presented.},
keywords = {},
pubstate = {published},
tppubtype = {inproceedings}
}
Several studies about the influence of heavy metals onto the growth of vegetables have been carried out in Cuba by the Ministry of Agriculture with the aim to evaluate the effects resulting of the continuous application of fertilizers and other materials to the crop soils. The analysis of metal contents in soil and vegetable samples is often troublesome due to the low concentration levels to be determined. During the present work different EDXRF, AAS and ASV methods were applied and compared for the evaluation of Cr, Ni, Cu, Zn, Cd and Pb contents in ferralitic -red soil and sorgo plant samples. Several Certified Reference Materials (CRM) (inorganic and organic matrixes) were analyzed in order to evaluate the performance of the analytical procedures and the bias and precision of the results. A study was performed growing sorgo plants in several series of pots where different quantities of metals were added to the soil substrate. The observed correlation between the metal contents in soil and plants resulting after such experiment, as well as the influence of different additions of each metal onto the plant growth is also presented.
Perez, Guillermo Mesa; Arteche, Raul
One way for a virtual nuclear instrumentation Proceedings Article
En: 2. NURT 1999 , La Habana (Cuba), 26-29 Oct 1999, 1999, ISBN: 959-7136-04-X.
Resumen | Enlaces | BibTeX | Etiquetas:
@inproceedings{mesaperez_arteche_1999,
title = {One way for a virtual nuclear instrumentation},
author = {Guillermo Mesa Perez and Raul Arteche},
url = {https://inis.iaea.org/records/2zatk-26n48
/wp-content/uploads/2026/03/ELEC07.pdf},
isbn = {959-7136-04-X},
year = {1999},
date = {1999-01-01},
urldate = {1999-01-01},
booktitle = {2. NURT 1999 , La Habana (Cuba), 26-29 Oct 1999},
abstract = {This article discusses how to write a dynamical laudable VxDs for the Microsoft Windows 95 operating system using the VTOOLSD library, VxDs for Windows 95 may be written in C or C++, loading such VxDs using the Win32 application programming interface (API).},
keywords = {},
pubstate = {published},
tppubtype = {inproceedings}
}
This article discusses how to write a dynamical laudable VxDs for the Microsoft Windows 95 operating system using the VTOOLSD library, VxDs for Windows 95 may be written in C or C++, loading such VxDs using the Win32 application programming interface (API).
Leyva, A.; Alfonso, O.; Cruz, C.
Loss of the transition temperature distribution homogeneity within YBaCuO ceramic after gamma Irradiation Proceedings Article
En: 2. NURT 1999 , La Habana (Cuba), 26-29 Oct 1999, 1999, ISBN: 959-7136-04-X.
Resumen | Enlaces | BibTeX | Etiquetas:
@inproceedings{leyva_alfonso_cruz_1999,
title = {Loss of the transition temperature distribution homogeneity within YBaCuO ceramic after gamma Irradiation},
author = {A. Leyva and O. Alfonso and C. Cruz},
url = {https://inis.iaea.org/records/qabxg-gvd96
http://www.ceaden.cu/wp-content/uploads/2026/03/WONP22.pdf},
isbn = {959-7136-04-X},
year = {1999},
date = {1999-01-01},
urldate = {1999-01-01},
booktitle = {2. NURT 1999 , La Habana (Cuba), 26-29 Oct 1999},
abstract = {Ton, Toff and Tc behaviors as a function of depth for a superconductor material irradiated with Cs137 gamma source have been studied experimentally and by computer simulation techniques. After the irradiation the critical temperature of the material increased, observing that the most significant changes took place at zones of sample nearest to the gamma source. By simulation was found that the higher dose concentrations locate near the incident surface of the sample. Comparing this simulation with our experimental data we found a good coincidence. Our study indicates that the dose deposited about the incident surface is high enough in order to stimulate the processes that benefit the structure and therefore it improves the superconducting properties of the material. Moving into the sample bulk these processes become less effective due to the insufficient dose deposition.},
keywords = {},
pubstate = {published},
tppubtype = {inproceedings}
}
Ton, Toff and Tc behaviors as a function of depth for a superconductor material irradiated with Cs137 gamma source have been studied experimentally and by computer simulation techniques. After the irradiation the critical temperature of the material increased, observing that the most significant changes took place at zones of sample nearest to the gamma source. By simulation was found that the higher dose concentrations locate near the incident surface of the sample. Comparing this simulation with our experimental data we found a good coincidence. Our study indicates that the dose deposited about the incident surface is high enough in order to stimulate the processes that benefit the structure and therefore it improves the superconducting properties of the material. Moving into the sample bulk these processes become less effective due to the insufficient dose deposition.
Mainegra, Ernesto; Capote, Roberto; Lopez, Ernesto
Dose rate distributions for 103Pd, 125I, 169Yb and 192Ir Brachytherapy sources. An egs4 monte Carlo study Proceedings Article
En: 2. NURT 1999 , La Habana (Cuba), 26-29 Oct 1999, 1999, ISBN: 959-7136-04-X.
Resumen | Enlaces | BibTeX | Etiquetas:
@inproceedings{mainegra_capote_lopez_1999,
title = {Dose rate distributions for ^{103}Pd, ^{125}I, ^{169}Yb and ^{192}Ir Brachytherapy sources. An egs4 monte Carlo study},
author = {Ernesto Mainegra and Roberto Capote and Ernesto Lopez},
url = {https://inis.iaea.org/records/n64j1-vgv71
/wp-content/uploads/2026/03/WONP18.pdf},
isbn = {959-7136-04-X},
year = {1999},
date = {1999-01-01},
urldate = {1999-01-01},
booktitle = {2. NURT 1999 , La Habana (Cuba), 26-29 Oct 1999},
abstract = {Absolute dose rate distributions in water around ^{103}Pd, ^{125}I, ^{169}Yb and ^{192}Ir brachytherapy sources were estimated by mean of the EGS4 Monte Carlo Simulation System. DLC-136/PHOTX cross section library, water molecular form factors, bound Compton scattering and Doppler broadening of the Comptonscattered photon energy were considered in the calculations. Following AAPM recommendations for dosimetry of interstitial brachytherapy sources, dose rate constants, radial dose functions and anisotropy functions have been calculated. Comparison of absolute dose rate values computed after the protocol recommended by the AAPM Task Group No. 43 between their proposed values and our Monte Carlo calculated values shows excellent agreement between both data sets. Moreover, Monte Carlo-based dosimetry data can be used as alternative to measured values offering reliable and accurate values, thus validating them as an emerging clinical dosimetry tool.},
keywords = {},
pubstate = {published},
tppubtype = {inproceedings}
}
Absolute dose rate distributions in water around 103Pd, 125I, 169Yb and 192Ir brachytherapy sources were estimated by mean of the EGS4 Monte Carlo Simulation System. DLC-136/PHOTX cross section library, water molecular form factors, bound Compton scattering and Doppler broadening of the Comptonscattered photon energy were considered in the calculations. Following AAPM recommendations for dosimetry of interstitial brachytherapy sources, dose rate constants, radial dose functions and anisotropy functions have been calculated. Comparison of absolute dose rate values computed after the protocol recommended by the AAPM Task Group No. 43 between their proposed values and our Monte Carlo calculated values shows excellent agreement between both data sets. Moreover, Monte Carlo-based dosimetry data can be used as alternative to measured values offering reliable and accurate values, thus validating them as an emerging clinical dosimetry tool.
Padilla, Roman; Arrazcaeta, Roger; Hernandez, Carlos A.; Hernandez, Aurelio Tulio
INAA characterization of colonial pottery from old havana collections Proceedings Article
En: 2. NURT 1999 , La Habana (Cuba), 26-29 Oct 1999, 1999, ISBN: 959-7136-04-X.
Resumen | Enlaces | BibTeX | Etiquetas:
@inproceedings{padilla_arrazcaeta_hernandez_tuliohernandez_1999,
title = {INAA characterization of colonial pottery from old havana collections},
author = {Roman Padilla and Roger Arrazcaeta and Carlos A. Hernandez and Aurelio Tulio Hernandez},
url = {https://inis.iaea.org/records/mtqty-3as87
/wp-content/uploads/2026/03/ENV32.pdf},
isbn = {959-7136-04-X},
year = {1999},
date = {1999-01-01},
urldate = {1999-01-01},
booktitle = {2. NURT 1999 , La Habana (Cuba), 26-29 Oct 1999},
abstract = {Since 1990, the Archaeology in Cuba has relied on a very limited analytic capacity, mainly for lacking in resources and of technical basis. The works performed to study ceramic artifacts related with different archaeological contexts have been carried out basically by their morphology, style features, techniques of elaboration, texture or other properties. The aim of the Research Project CUB9397/RB consisted on the application of the Instrumental Neutron Activation Analysis (INAA), as the more frequently used analytic technique for the study of chemical composition in ceramic objects during the last years, in some of the Archaeological researches that are presently in course in Cuba. Some of the commonly found colonial pottery types were analyzed by INAA in order to establish compositional models. Two major types of ceramic ware conformed the main research interests during the first stage of the research on Colonial pottery: the first, samples classified as belonging to several Majolica styles of Spanish and Mexican provenance; and the second type included samples of ordinary pottery that indicated an the presence in Havana of a starting local manufacture trying to follow Spanish traditions.},
keywords = {},
pubstate = {published},
tppubtype = {inproceedings}
}
Since 1990, the Archaeology in Cuba has relied on a very limited analytic capacity, mainly for lacking in resources and of technical basis. The works performed to study ceramic artifacts related with different archaeological contexts have been carried out basically by their morphology, style features, techniques of elaboration, texture or other properties. The aim of the Research Project CUB9397/RB consisted on the application of the Instrumental Neutron Activation Analysis (INAA), as the more frequently used analytic technique for the study of chemical composition in ceramic objects during the last years, in some of the Archaeological researches that are presently in course in Cuba. Some of the commonly found colonial pottery types were analyzed by INAA in order to establish compositional models. Two major types of ceramic ware conformed the main research interests during the first stage of the research on Colonial pottery: the first, samples classified as belonging to several Majolica styles of Spanish and Mexican provenance; and the second type included samples of ordinary pottery that indicated an the presence in Havana of a starting local manufacture trying to follow Spanish traditions.
Miranda, A.; Echevarria, J. F.; Rondon, S.; Leiva, P.; Sendoya, F. A.; Amalfi, J.; Lopez, M.; Dominguez, H.
Optimal parameters determination of the orbital weld technique using microstructural and chemical properties of welded joint Proceedings Article
En: 2. NURT 1999 , La Habana (Cuba), 26-29 Oct 1999, 1999, ISBN: 959-7136-04-X.
Resumen | Enlaces | BibTeX | Etiquetas:
@inproceedings{miranda_echevarria_rondon_leiva_sendoya_amalfi_lopez_dominguez_1999,
title = {Optimal parameters determination of the orbital weld technique using microstructural and chemical properties of welded joint},
author = {A. Miranda and J. F. Echevarria and S. Rondon and P. Leiva and F. A. Sendoya and J. Amalfi and M. Lopez and H. Dominguez},
url = {https://inis.iaea.org/records/sg568-ap326
/wp-content/uploads/2026/03/IND19.pdf},
isbn = {959-7136-04-X},
year = {1999},
date = {1999-01-01},
urldate = {1999-01-01},
booktitle = {2. NURT 1999 , La Habana (Cuba), 26-29 Oct 1999},
abstract = {The paper deals with the study of the main parameters of thermal cycle in Orbital Automatic Weld, as a particular process of the GTAW Weld technique. Also is concerned with the investigation of microstructural and mechanical properties of welded joints made with Orbital Technique in SA 210 Steel, a particular alloy widely use during the construction of Economizers of Power Plants. A number of PC software were used in this sense in order to anticipate the main mechanical and structural characteristics of Weld metal and the Heat Affected Zone (HAZ). The papers also might be of great value during selection of optimal Weld parameters to produce sound and high quality Welds during the construction / assembling of structural components in high requirements industrial sectors and also to make a reliable prediction of weld properties.},
keywords = {},
pubstate = {published},
tppubtype = {inproceedings}
}
The paper deals with the study of the main parameters of thermal cycle in Orbital Automatic Weld, as a particular process of the GTAW Weld technique. Also is concerned with the investigation of microstructural and mechanical properties of welded joints made with Orbital Technique in SA 210 Steel, a particular alloy widely use during the construction of Economizers of Power Plants. A number of PC software were used in this sense in order to anticipate the main mechanical and structural characteristics of Weld metal and the Heat Affected Zone (HAZ). The papers also might be of great value during selection of optimal Weld parameters to produce sound and high quality Welds during the construction / assembling of structural components in high requirements industrial sectors and also to make a reliable prediction of weld properties.
Dias, Adriana; Barreara, Lenay; Otero, Isabel; Rabelo, Yanet; Rodriguez, Dania
Laser He-Ne effect on bacillus thuringiensis var. kurstaki strain LBT-24 Proceedings Article
En: 2. NURT 1999 , La Habana (Cuba), 26-29 Oct 1999, 1999, ISBN: 959-7136-04-X.
Resumen | Enlaces | BibTeX | Etiquetas:
@inproceedings{dias_barreara_otero_rabelo_rodriguez_1999,
title = {Laser He-Ne effect on bacillus thuringiensis var. kurstaki strain LBT-24},
author = {Adriana Dias and Lenay Barreara and Isabel Otero and Yanet Rabelo and Dania Rodriguez},
url = {https://inis.iaea.org/records/m5pbg-xja37
/wp-content/uploads/2026/03/IND09.pdf},
isbn = {959-7136-04-X},
year = {1999},
date = {1999-01-01},
urldate = {1999-01-01},
booktitle = {2. NURT 1999 , La Habana (Cuba), 26-29 Oct 1999},
abstract = {Bacillus thuringiensis toxin is one of the world widely used entomopathogen. It presents an strong insecticide activity on Lepidoptera, Coleoptera and Diptera. It was studied the effect of Laser He-Ne on Bacillus thuringiensis var. kurstaki strain LBT-24. Growing curves were made and were calculated the duplication time and the specific growing speed of each one. The curves were statistically compared. It was also analysed the phage induction with and without Laser red light influence. Also, it was observed the presence of the d-endotoxin crystal with this treatment. The red Laser He-Ne enhanced the growth of this micro-organism under laboratory conditions and didn't have any effect over the other characteristics analysed.},
keywords = {},
pubstate = {published},
tppubtype = {inproceedings}
}
Bacillus thuringiensis toxin is one of the world widely used entomopathogen. It presents an strong insecticide activity on Lepidoptera, Coleoptera and Diptera. It was studied the effect of Laser He-Ne on Bacillus thuringiensis var. kurstaki strain LBT-24. Growing curves were made and were calculated the duplication time and the specific growing speed of each one. The curves were statistically compared. It was also analysed the phage induction with and without Laser red light influence. Also, it was observed the presence of the d-endotoxin crystal with this treatment. The red Laser He-Ne enhanced the growth of this micro-organism under laboratory conditions and didn't have any effect over the other characteristics analysed.
Garcia, M. A.; Darias, J. G.; Lubian, H.; Martin, J. L.
Cr-Ni thermopile sensor for cw-laser power measurement Proceedings Article
En: 2. NURT 1999 , La Habana (Cuba), 26-29 Oct 1999, 1999, ISBN: 959-7136-04-X.
Resumen | Enlaces | BibTeX | Etiquetas:
@inproceedings{garcia_darias_lubian_martin_1999,
title = {Cr-Ni thermopile sensor for cw-laser power measurement},
author = {M. A. Garcia and J. G. Darias and H. Lubian and J. L. Martin},
url = {https://inis.iaea.org/records/j62b3-m4z43
/wp-content/uploads/2026/03/IND14.pdf},
isbn = {959-7136-04-X},
year = {1999},
date = {1999-01-01},
urldate = {1999-01-01},
booktitle = {2. NURT 1999 , La Habana (Cuba), 26-29 Oct 1999},
abstract = {In the present paper the manufacturing and characterization of a Cr-Ni thermopile sensor for CW-laser power measurements is described. The sensor was obtained using the vacuum evaporation method. We have chosen a thin film approach because it gives more flexibility in the design of the elements and in the choice of materials. The substrate of the sensitive element is a 1mm thick ceramic disk having a diameter of 40 mm. The thermopile metals were chosen for two reasons: (1) They have good thermocouple properties and (2) the evaporated films are tough and adherent. The geometry of the 11-junction thermopiles sufficiently coarse to allow fabrication of the thermopiles by successive evaporations through registering masks. The sensor is capable of power measurements of 1 to 30 watt and this version has a sensibility of 350 mV/W.},
keywords = {},
pubstate = {published},
tppubtype = {inproceedings}
}
In the present paper the manufacturing and characterization of a Cr-Ni thermopile sensor for CW-laser power measurements is described. The sensor was obtained using the vacuum evaporation method. We have chosen a thin film approach because it gives more flexibility in the design of the elements and in the choice of materials. The substrate of the sensitive element is a 1mm thick ceramic disk having a diameter of 40 mm. The thermopile metals were chosen for two reasons: (1) They have good thermocouple properties and (2) the evaporated films are tough and adherent. The geometry of the 11-junction thermopiles sufficiently coarse to allow fabrication of the thermopiles by successive evaporations through registering masks. The sensor is capable of power measurements of 1 to 30 watt and this version has a sensibility of 350 mV/W.
Miranda, Enrique F. Prieto; Ardanza, Armando Chavez; Fuente, Gabriel Cuesta
Influence of irradiation and storage temperatures and post-irradiation time in the amber perspex dosimeters Proceedings Article
En: 2. NURT 1999 , La Habana (Cuba), 26-29 Oct 1999, 1999, ISBN: 959-7136-04-X.
Resumen | Enlaces | BibTeX | Etiquetas:
@inproceedings{prietomiranda_chavezardanza_cuestafuente_1999,
title = {Influence of irradiation and storage temperatures and post-irradiation time in the amber perspex dosimeters},
author = {Enrique F. Prieto Miranda and Armando Chavez Ardanza and Gabriel Cuesta Fuente},
url = {/wp-content/uploads/2026/03/IND20.pdf},
isbn = {959-7136-04-X},
year = {1999},
date = {1999-01-01},
urldate = {1999-01-01},
booktitle = {2. NURT 1999 , La Habana (Cuba), 26-29 Oct 1999},
abstract = {The perspex dosimeters are employed in the high dose dosimetry as a routine dosimeter for to control the radiation processing of food and medical products, due to the following properties: quick evaluation, appropriate accuracy and ease handling. The amber perspex the same as red and clear belong to this dosimeter king, which are used to measure the absorbed dose in the high dose range. In the present paper were obtained the calibration curves of the amber perspex 3042 dosimeters, batch l, in our condition of work, as the irradiation and storage temperatures, as well as, different measurement wavelengths, these factors influence in the absorbed dose value determination, and it to know the relation between the post-irradiation time and the induced specific absorbance value in function of the absorbed dose.},
keywords = {},
pubstate = {published},
tppubtype = {inproceedings}
}
The perspex dosimeters are employed in the high dose dosimetry as a routine dosimeter for to control the radiation processing of food and medical products, due to the following properties: quick evaluation, appropriate accuracy and ease handling. The amber perspex the same as red and clear belong to this dosimeter king, which are used to measure the absorbed dose in the high dose range. In the present paper were obtained the calibration curves of the amber perspex 3042 dosimeters, batch l, in our condition of work, as the irradiation and storage temperatures, as well as, different measurement wavelengths, these factors influence in the absorbed dose value determination, and it to know the relation between the post-irradiation time and the induced specific absorbance value in function of the absorbed dose.
Fuentes, Jorge L.; Alvarez, Alba; Deus, Juan E.; Duque, Miriam C.; Cornide, Maria T.
Genetic diversity analysis in rice mutants using isozyme and morphological markers Proceedings Article
En: 2. NURT 1999 , La Habana (Cuba), 26-29 Oct 1999, 1999, ISBN: 959-7136-04-X.
Resumen | Enlaces | BibTeX | Etiquetas:
@inproceedings{fuentes_alvarez_deus_duque_cornide_1999,
title = {Genetic diversity analysis in rice mutants using isozyme and morphological markers},
author = {Jorge L. Fuentes and Alba Alvarez and Juan E. Deus and Miriam C. Duque and Maria T. Cornide},
url = {https://inis.iaea.org/records/sfe0h-ssm41
/wp-content/uploads/2026/03/AGRI12.pdf},
isbn = {959-7136-04-X},
year = {1999},
date = {1999-01-01},
urldate = {1999-01-01},
booktitle = {2. NURT 1999 , La Habana (Cuba), 26-29 Oct 1999},
abstract = {In this work, isozyme and agromorphologic variability of radiation-induced rice mutants with different cytoplasm base was surveyed. Agromorphologic data (plant type, lodging resistance, life cycle and yielding) were transformed into binary data. This markers, along with isozyme (Peroxidases, Esterases, Catalases, Alcohol Dehydrogenases and Polyphenoloxidase) data, were considered for genetic diversity analyses in order to estimate the extent of diversity generated by ionizing radiation. Genetic Similarity between individuals was obtained based on Dice's Coefficient. The UPGMA phenogram defined three main clusters that clearly corresponded to the different cytoplasm sources. However, further discrimination between control varieties and their mutants could be obtained. Bootstrapping analysis was performed to estimate the robustness of the group in the phenogram. According to their bootstrap P value (99.6%), Basmati-370 mutant lines could be considered statistically different from their control. This analysis is suggested as an useful supporting tool for an accurate varietal validation. A Multiple Correspondence Analysis (MCA) showed individuals dispersion around the three principal axis of variation. In general the UPGMA phenogram pattern was corroborated at MCA. Variables such as life cycle, presence of bands Est-a and Prx-m and the absence of Est-i, Prx-h and Prx-i accounted for the higher contribution to variation. The adequacy of morphological and isozyme descriptors for new mutant lines validation is also discussed.},
keywords = {},
pubstate = {published},
tppubtype = {inproceedings}
}
In this work, isozyme and agromorphologic variability of radiation-induced rice mutants with different cytoplasm base was surveyed. Agromorphologic data (plant type, lodging resistance, life cycle and yielding) were transformed into binary data. This markers, along with isozyme (Peroxidases, Esterases, Catalases, Alcohol Dehydrogenases and Polyphenoloxidase) data, were considered for genetic diversity analyses in order to estimate the extent of diversity generated by ionizing radiation. Genetic Similarity between individuals was obtained based on Dice's Coefficient. The UPGMA phenogram defined three main clusters that clearly corresponded to the different cytoplasm sources. However, further discrimination between control varieties and their mutants could be obtained. Bootstrapping analysis was performed to estimate the robustness of the group in the phenogram. According to their bootstrap P value (99.6%), Basmati-370 mutant lines could be considered statistically different from their control. This analysis is suggested as an useful supporting tool for an accurate varietal validation. A Multiple Correspondence Analysis (MCA) showed individuals dispersion around the three principal axis of variation. In general the UPGMA phenogram pattern was corroborated at MCA. Variables such as life cycle, presence of bands Est-a and Prx-m and the absence of Est-i, Prx-h and Prx-i accounted for the higher contribution to variation. The adequacy of morphological and isozyme descriptors for new mutant lines validation is also discussed.
Suarez, J. C.; Gonzalez, E.; Alfonso, O.; C., Cruz
Changes of the ultrasonic attenuation in petroleum with different viscosities Proceedings Article
En: 2. NURT 1999 , La Habana (Cuba), 26-29 Oct 1999, 1999, ISBN: 959-7136-04-X.
Resumen | Enlaces | BibTeX | Etiquetas:
@inproceedings{suarez_gonzalez_alfonso_cruzc_1999,
title = {Changes of the ultrasonic attenuation in petroleum with different viscosities},
author = {J. C. Suarez and E. Gonzalez and O. Alfonso and Cruz C.},
url = {https://inis.iaea.org/records/mqkb7-76k15
/wp-content/uploads/2026/03/IND13.pdf},
isbn = {959-7136-04-X},
year = {1999},
date = {1999-01-01},
urldate = {1999-01-01},
booktitle = {2. NURT 1999 , La Habana (Cuba), 26-29 Oct 1999},
abstract = {In this paper the changes of the absorption (attenuation) of sound for 2 MHz was observed in petroleum with different kinematic viscosity. Experimental results showed that this parameter should measure the kinematic viscosity in highly viscous liquids.},
keywords = {},
pubstate = {published},
tppubtype = {inproceedings}
}
In this paper the changes of the absorption (attenuation) of sound for 2 MHz was observed in petroleum with different kinematic viscosity. Experimental results showed that this parameter should measure the kinematic viscosity in highly viscous liquids.
Barrera, Lenay; Otero, Isabel; Rodriguez, Dania; Suarez, Juana
Effect of different gamma irradiation doses on the decrease of trofin powder bio burden Proceedings Article
En: 2. NURT 1999 , La Habana (Cuba), 26-29 Oct 1999, 1999, ISBN: 959-7136-04-X.
Resumen | Enlaces | BibTeX | Etiquetas:
@inproceedings{barrera_otero_rodriguez_suarez_1999,
title = {Effect of different gamma irradiation doses on the decrease of trofin powder bio burden},
author = {Lenay Barrera and Isabel Otero and Dania Rodriguez and Juana Suarez},
url = {https://inis.iaea.org/records/0txzd-6ht10
/wp-content/uploads/2026/03/IND08.pdf},
isbn = {959-7136-04-X},
year = {1999},
date = {1999-01-01},
urldate = {1999-01-01},
booktitle = {2. NURT 1999 , La Habana (Cuba), 26-29 Oct 1999},
abstract = {Ionization irradiation microbiocid action is one of the most important effect in medical industry. It has been used for the sterilization and decontamination of medical devices, biological tissues, drugs and so on. Trofin is a natural nutritional supply principally used for children and o ld people. Because of its composition characteristics is not appropriate to use another sterilization methods. The decontamination dose for gamma radiation of Trofin baches 7001 and 6006 were determined using different doses. It was used an sterility assurance level (SAL) of 10 –2 enough for this kind of product.},
keywords = {},
pubstate = {published},
tppubtype = {inproceedings}
}
Ionization irradiation microbiocid action is one of the most important effect in medical industry. It has been used for the sterilization and decontamination of medical devices, biological tissues, drugs and so on. Trofin is a natural nutritional supply principally used for children and o ld people. Because of its composition characteristics is not appropriate to use another sterilization methods. The decontamination dose for gamma radiation of Trofin baches 7001 and 6006 were determined using different doses. It was used an sterility assurance level (SAL) of 10 –2 enough for this kind of product.
Leyva, A.; Fernandez, L. M.; Cruz, C.
Crystal cell parameters behavior of gamma irradiated YBaCuO ceramic Proceedings Article
En: 2. NURT 1999 , La Habana (Cuba), 26-29 Oct 1999, 1999, ISBN: 959-7136-04-X.
Resumen | Enlaces | BibTeX | Etiquetas:
@inproceedings{leyva_fernandez_cruz_1999,
title = {Crystal cell parameters behavior of gamma irradiated YBaCuO ceramic},
author = {A. Leyva and L. M. Fernandez and C. Cruz},
url = {https://inis.iaea.org/records/x1s4y-tsj62
/wp-content/uploads/2026/02/WONP23.pdf},
isbn = {959-7136-04-X},
year = {1999},
date = {1999-01-01},
urldate = {1999-01-01},
booktitle = {2. NURT 1999 , La Habana (Cuba), 26-29 Oct 1999},
abstract = {X -ray diffraction technique was employed to experimentally determinate the changes in the cell parameters of YBa2Cu3O7-d samples exposed to de action of Co60 gamma irradiation (1.33 and 1.17 MeV) at room temperature. The a, b, and c parameters and both the cell volume and orthorhombicity were graphically presented as a function of de exposure doses. A singular behavior of these parameters with the dose increment was observed. The results are compared with the values reported for the optimal YBa2Cu3O7 structure and with some experimental galvanomagnetic measurements. Some ideas about the mechanisms, which take place in the observed behaviors, are discussed.},
keywords = {},
pubstate = {published},
tppubtype = {inproceedings}
}
X -ray diffraction technique was employed to experimentally determinate the changes in the cell parameters of YBa2Cu3O7-d samples exposed to de action of Co60 gamma irradiation (1.33 and 1.17 MeV) at room temperature. The a, b, and c parameters and both the cell volume and orthorhombicity were graphically presented as a function of de exposure doses. A singular behavior of these parameters with the dose increment was observed. The results are compared with the values reported for the optimal YBa2Cu3O7 structure and with some experimental galvanomagnetic measurements. Some ideas about the mechanisms, which take place in the observed behaviors, are discussed.