Search Results - "Leite, C. V. Barros"

Atmospheric Impacts due to Anthropogenic Activities in Remote Areas: The Case Study of Admiralty Bay/King George Island/Antarctic Peninsula by Leal, M. A, Joppert, M, Licínio, M. V, Evangelista, H, Maldonado, J, Dalia, K. C, Lima, C, Barros Leite, C. V, Correa, S. M, Medeiros, Geiza, Dias da Cunha, K

“…The aim of the present work is to characterize the local atmospheric emissions levels and compare them to the component derived from global pollution in a…”
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Dissolution Factors of Ta, Th, and U Oxides Present in Pyrochlore by Dias da Cunha, K, Santos, M, Zouain, F, Carneiro, L, Pitassi, G, Lima, C, Barros Leite, C. V, Dália, K. C. P

“…Air pollution can be a problem in industrial processes, but monitoring and controling the aerosols in the work place is not enough to estimate the occupational…”
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Study of worker's exposure to thorium, uranium and niobium mineral dust by DIAS DA CUNHA, K, LIPSZTEIN, J. L, AZEREDO, A. M, MELO, D, JULIAO, L. M. Q. C, LAMEGO, F. F, SANTOS, M, BARROS LEITE, C. V

“…The aim of this study is to evaluate worker's exposure to particles, with special attention to thorium, uranium and niobiumbearing particles. A cascade…”
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Tantalum Dissolution Rate in Simulant Lung Fluid by Lima, C, Coelho, M. J, Dalia, K. C. P, Leite, C. V. Barros, Medeiros, G, Dias da Cunha, K

“…The aim of this study is to determine the solubility rate of tantalum contained in pyrochlore, columbite-tantalite and columbite in simulant lung fluid. The…”
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PIXE and PDMS Methods Applied to Aerosols Analysis by Da Cunha, K. Dias, Pereira, J. A. M., Leite, C. V. Barros

“…The aim of this study was to apply the PIXE (Particle Induced X-ray Emission) and PDMS (Plasma Desorption Mass Spectrometry) techniques to characterize…”
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Case Study: Uranium Oxide Solubility in Simulated Lung Fluids by Dias da Cunha, K. M., Lima, C., Barros Leite, C. V., Santos, M., Carneiro, L., Lima, R. M.G.

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Application of 252Cf-PDMS to characterize airborne particles deposited in an Antarctic glacier by Dias da Cunha, K, Evangelista, H, Dalia, K.C, Simões, J.C, Barros Leite, C.V

“…The aim of this study is to apply the 252Cf-PDMS (plasma desorption mass spectrometry) technique to characterize particles deposited in ice samples. This…”
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Metal trace analysis by PIXE and PDMS techniques by Dias da Cunha, K, Barros Leite, C.V

“…The risk for the human health due to exposure to aerosols depends on the intake pattern, the mass concentration and the speciation of the elements present in…”
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Secondary-ion emission from phenylalanine induced by atomic and molecular MeV ion beams by BARROS LEITE, C. V, DA SILVEIRA, E. F, JERONYMO, J. M. F, PINHO, R. R, BAPTISTA, G. B, SCHWEIKERT, E. A, PARK, M. A

“…Relative yields of positive and negative secondary ions are measured for atomic and molecular MeV ion beam impinging on a phenylalanine target. The secondary…”
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A Cascade Impactor for Mineral Particle Analysis by Dias da Cunha, K., Lipsztein, J. L., Fang, C. P., Barros Leite, C. V.

“…A cascade impactor (NCI) made of stainless steel with six stages was developed to collect particles using 50% cutpoints in the range of 0.64 to 19.4 μm. The…”
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Occupational Exposures to Thorium in Two Brazilian Niobium Plants by Dias da Cunha, K., Lipsztein, J.L., Barros Leite, C.V.

“…The worker exposure to thorium-bearing airborne particulate was estimated in two Brazilian plants that process niobium minerals, one in the Amazon Forest…”
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Analysis of anodic oxide films on niobium by Magnussen, N, Quinones, L, Dufner, D. C, Cocke, D. L, Schweikert, E. A, Patnaik, B. K, Leite, C. V. Barros, Baptista, G. B

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Rutherford Backscattering with Heavy Ions by Sullins, R. T., Leite, C. V. Barros, Schweikert, E. A.

“…The mass resolution capabilities of heavy ion Rutherford backscattering spectrometry (HIRBS) have been explored. A generalized prediction has been made of the…”
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Exposure to mineral sands dust particles by Dias da Cunha, K., Barros Leite, C.V., Zays, Z.

“…The aim of this study is to characterize the airborne particles in a Brazilian region with high concentration of mineral sands (Buena village). In this study…”
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Characterization of environmental exposure to mineral sands by PDMS technique by Dias da Cunha, K., Rickman, R.D., Barros Leite, C.V.

“…The risk to human health due to exposure to aerosols depends on the intake pattern, the mass concentration and the speciation of the elements present in…”
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H+ secondary ions emission stimulated by impact of energetic ions on heated target by Barros Leite, C.V., Baptista, G.B., Pereira, J.A.M.

“…The hydrogen secondary ion emission yield was measured for the impact of 2.0 MeV nitrogen ions on thin LiF targets using a time of flight mass spectrometer in…”
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Effect of the pre-equilibrium charge state on the Li + emission yield by Barros Leite, C.V, Baptista, G.B, Pereira, J.M

“…The secondary emission yield of Li + from a LiF target bombarded with 2.0 MeV nitrogen ions was measured as functions of the incident ion charge state and of…”
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Studies in heavy ion activation analysis I. on the selection of activation reactions by Barros Leite, C. V., Schweikert, E. A.

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Rutherford backscattering with heavy ions: Part I: Mass and depth resolution by Sullins, R. T., Barros Leite, C. V., Schweikert, E. A.

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Rutherford backscattering with heavy ions: Part II: Sensitivities and applications by Sullins, R. T., Barros Leite, C. V., Schweikert, E. A.

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