A5003140310- Heavy metals in environment
- Radioactivity and Radon Measurements
- Analytical chemistry methods development
- Radioactive contamination and transfer
- Nuclear Physics and Applications
- Radioactive element chemistry and processing
- Graphite, nuclear technology, radiation studies
- Nonlinear Photonic Systems
- Lichen and fungal ecology
- X-ray Spectroscopy and Fluorescence Analysis
- Nonlinear Waves and Solitons
- Nuclear and radioactivity studies
- Advanced Mathematical Physics Problems
- Geochemistry and Geologic Mapping
- Geological and Tectonic Studies in Latin America
- Mercury impact and mitigation studies
- Water Quality and Pollution Assessment
- Air Quality Monitoring and Forecasting
- Geochemistry and Elemental Analysis
- Electrochemical Analysis and Applications
- Numerical methods for differential equations
- Environmental and Ecological Studies
- Radioactive Decay and Measurement Techniques
- Soil Science and Environmental Management
- Water Resource Management and Quality
Centro de Aplicaciones Tecnológicas y Desarrollo Nuclear
2009-2024
ArcelorMittal (Spain)
2024
Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas
1995-2022
Universidade Federal Rural de Pernambuco
2018-2019
Center of Technology and Engineering for Nuclear Projects
2019
University of Guelph
2010
University of Matanzas
2010
University of Havana
2010
Universidad Complutense de Madrid
1981-2004
Hospital Clínic de Barcelona
2000
Mercury, lead, cadmium and arsenic are considered hazardous pollutants in the environment, which can result a risk for human health. This study aimed to determine contents of As, Cd, Cr, Cu, Hg, Ni, Pb Zn by ICP-MS, CVAAS ICP-AES paddy brown rice, grown different soils Cuba. The interest include Cu was because these elements found very high levels agricultural soils. To assess safety dietary intake metals, estimated weekly calculated. Cd As were below maximum limits. A higher value obtained...
The time evolution of expanded and contracted solitary waves the Dirac field with scalar self-interaction is exhibited. It shown that positivity second variation energy functional not a necessary condition for stability these as has been recently suggested.
Abstract The In Situ Combustion Pilot Project (ISCPP) to be carried out in the Orinoco Oil Belt (Venezuela), is a technological project leaded by PDVSA Intevep together with several organizations of E&P San Tomé. ISCPP oriented towards assessment such thermal process increase recovery factors heavy (H) and extra (XH) crude oil reservoirs. Although was discovered 1930s, it 1980s that first rigorous evaluations were made. Recently, area certificated contain 235 billions recoverable (20%...
It is shown that the minimum solitary wave of a nonlinear spinorial model unstable under charge-preserving deformations via radiative decay. We analyze cause this decay.Received 26 March 1986DOI:https://doi.org/10.1103/PhysRevD.34.644©1986 American Physical Society
Abstract A sensitive and alternative analytical procedure for the determination of chromium mercury content in natural waters by coprecipitation with APDC using an absolute thin layer EDXRF method is described. The use 109 Cd 238 Pu annular radioisotope sources, influence oxidation states elemental concentration were studied. At pH 4, 100% recovery was found mercury. Cr(VI) not quantitative (75%) but constant selected range (5–100 µg/l). On other hand, Cr(III) did precipitate at same pH....
Abstract There is an increasing interest for 90 Y radionuclide therapy. However, radioimmunotherapy, one of the most important applications Y, demands a very high purity product. Obtaining quality difficult not only because complex and time consuming production schemes but also control which has challenging tasks like determination Sr at low concentrations. The present paper investigates reported purification procedure removal stable metal trace contaminants from solution, seeking its...
This research presents the contents of Ca, Fe, Zn, Br, Rb, Sr and Pb in lichen samples used as biomonitors air pollution collected Havana. Statistical comparisons were made among results obtained three campaigns during years. Two X‐Ray Fluorescence (XRF) methods used, employing for excitation an annular 109 Cd source a Mo X‐ray tube with molybdenum secondary target. In both cases, matrix effects corrected by use normalization Compton scattered peak; this way determination is more efficient....