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Institution

National Nuclear Energy Commission

GovernmentRio de Janeiro, Brazil
About: National Nuclear Energy Commission is a government organization based out in Rio de Janeiro, Brazil. It is known for research contribution in the topics: Dosimetry & Laser. The organization has 3816 authors who have published 4694 publications receiving 59951 citations.


Papers
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Journal ArticleDOI
TL;DR: In this article, the pion and conspirator residues and trajectories were found to reproduce with accuracy the forward peak in the high-energy differential cross-section of the PDE.

22 citations

Journal ArticleDOI
TL;DR: Instrumental neutron activation analysis was used to measure concentrations of elements in hair samples from a group of patients of a medical clinic and from a control group, and comparisons were made between the results obtained for these two groups of individuals.
Abstract: Instrumental neutron activation analysis was used to measure concentrations of elements in hair samples from a group of patients of a medical clinic and from a control group. Elements Al, As, Br, Ca, Cd, Cl, Co, Cu, Fe, Hg, K, Mg, Mn, Na, Sb, Sc, Se, V and Zn were analyzed and comparisons were made between the results obtained for these two groups of individuals. Normal ranges for elemental hair by commercial laboratories are also presented, for comparison, with those results obtained for the control group of individuals living in Sao Paulo, Brazil. Precision and accuracy of the results were evaluated by analyzing NIES No. 5 Human Hair and SHINR GBW09101 Human Hair reference materials.

22 citations

Journal ArticleDOI
TL;DR: In this article, an analysis of thermoluminescence (TL) and thermally stimulated exoelectron emission has proved that the natural Brazilian topaz is a promising material for dosimetry of ionizing radiation.
Abstract: Analyses of thermoluminescence (TL) and thermally stimulated exoelectron emission have proved that the natural Brazilian topaz is a promising material for dosimetry of ionizing radiation. Topaz is an aluminum fluorosilicate with a general composition of Al 2 (SiO 4 )(F,OH) 2 whose main defect is the presence of OH − groups substituting for the F − ions. Analyses of topaz samples from Santo Antonio do Jacinto, MG, Brazil, showed that their TL responses are strongly affected by the temperature of pre-irradiation thermal treatment. This behavior was correlated to the changes observed in the infrared and Raman spectra and a model could be proposed for the charge trapping and recombination process in colourless topaz.

22 citations

Journal ArticleDOI
TL;DR: It was demonstrated, by means of a biokinetical approach, that the long‐term accumulation of uranium in bone and marrow could be described by a piling up of single dose daily incorporation.
Abstract: The accumulation and microdistribution of uranium in the bone and marrow of Beagle dogs were determined by both neutron activation and neutron‐fission analysis. The experiment started immediately a...

22 citations


Authors

Showing all 3838 results

NameH-indexPapersCitations
Giorgio Parisi10894160746
Sergio Ferrara10572644507
Richard Wilson7080921477
Eliana B. Souto6644715706
Andrea Saltelli6518431540
Fausto Croce5116211753
Sílvia M. Rocha421634934
Marcos Duarte411225855
Luiz Gustavo Cançado4110613155
Ruggero Caminiti412677296
Francesco Romanelli402365756
Mario Molinaro391115923
Giovanna Cenacchi382174948
Claudio Pellegrini382355885
Maria Manuela Silva373245258
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Performance
Metrics
No. of papers from the Institution in previous years
YearPapers
202238
2021243
2020209
2019218
2018221
2017188