A5008477526- Nuclear Physics and Applications
- X-ray Spectroscopy and Fluorescence Analysis
- Radioactive element chemistry and processing
- Radioactivity and Radon Measurements
- Analytical chemistry methods development
- Catalytic Processes in Materials Science
- Advanced oxidation water treatment
- Radiation Effects and Dosimetry
- Urban Arborization and Environmental Studies
- Therapeutic Uses of Natural Elements
- Geochemistry and Geologic Mapping
- Clay minerals and soil interactions
- Heavy metals in environment
- Geography and Environmental Studies
- Radioactive contamination and transfer
- X-ray Diffraction in Crystallography
- Dental Radiography and Imaging
- Nuclear Materials and Properties
- Graphite, nuclear technology, radiation studies
- Coal and Its By-products
- Nuclear and radioactivity studies
- Laser Applications in Dentistry and Medicine
- Iron oxide chemistry and applications
- Isotope Analysis in Ecology
- Environmental DNA in Biodiversity Studies
National Nuclear Energy Commission
2004-2023
Instituto de Pesquisas Energéticas e Nucleares
2010-2023
Energy Research Institute
2022
Universidade de São Paulo
2018
Secretaria da Segurança Pública
2015
During operation, the coal power plant produces solid waste (bottom and fly ash) uncontrolled ashes disposal could lead to environmental contamination. Major trace elements (Al, Fe, Ti, Ca, Mg, As, Cd, Cr, Co, Cu, Mn, Mo, Ni, Pb, Zn, V) were determined in of Figueira (Brazil) their mobility evaluated by total available metal concentration ratio. The was WDXRF technique (after extraction with EDTA) ICP-OES technique. results showed a high for As Zn (average 270 391 mg kg−1) 974 1330 ashes....
RESUMO O Material Particulado (MP) está entre os principais contaminantes do ar. A Infraestrutura Verde (IV) vem sendo reconhecida como alternativa para melhorar a qualidade As árvores podem afetar diretamente níveis de MP, interceptando partículas em sua superfície. Devido essa capacidade, esta pesquisa teve objetivo contribuir com informações sobre viabilidade da vegetação verde interceptar e identificar as fontes poluentes atmosféricos. Amostras cascas parques urbanos São Paulo (SP) foram...
Non-invasive methods such as X-ray Fluorescence has been applied to study of the distinct pathologies and contamination levels analysis in various biological tissues among them nails, hair, tooth. On other hand, several works have demonstrated that laser could be induced chemical morphological alterations on enamel surface occupying an important role co-adjuvant caries disease prevention. Here, we combined fluorescence using Fundamental Parameters method aiming evaluate variation contend....
Induction of an apatite-forming ability on a 100% Y2O3-ZrO2, Al2O3, and 80/20 20/80 wt% zirconia-alumina (Y2O3-ZrO2-Al2O3) composite polycrystals via chemical treatment with 5M H3PO4 have been investigated. The treatments produced Zr-O surface functional groups, which are known to be effective for apatite nucleation in simulated body fluid. It’s believed that Al-OH groups not nucleation. I this work was shown nucleates substrate alumina treat untreated chemically. This implies Al- OH
Wavelength dispersive X-ray fluorescence spectrometry (WDXRF) is a suitable technique for the characterization of contaminated mining sites, providing quick and reliable screening areas significant contamination. This study established validated non-destructive methodology quantitative simultaneous determination major minor constituents in soil sediments by WDXRF, which was further applied to quantify sediment samples from Osamu Utsumi uranium mine (Caldas, Minas Gerais, Brazil). Elements...
Nickel oxide-yttria stabilized zirconia (NiO-YSZ) anode materials were synthesized by combustion process involving metal nitrate-urea decomposition. The precursor was heated to evaporate water undergoing dehydration, and then the mixtures froth swell. Further heating produces large amounts of gases that ignite at ambient atmosphere. Different nitrate/urea initial molar ratios employed in order investigate influence reaction temperature physical characteristics powder composite. flame...
TOYS CONTAMINED BY TOXIC SUBSTANCES.The main goal of the present study is analysis toxic elements in plastic toys commercialized Brazil.Metals like cadmium, lead, chromium, zinc, and aluminum, along with organic substances, such as phthalates, were identified different by quantitative analytical techniques.Traces thorium detected one studied samples.Although measured radioactive dose was rather low, presence a contaminant against to International Agency Atomic Energy regulations.Similar...
Assessment of heavy metal content in biological fluids is essential to determine human and animal health as a result exposure contaminated environments, food, water. WDXRF non-destructive method that involves no chemical treatments. It possible perform fast analysis without producing hazardous waste uses small sample volume (± 50 mL), which useful veterinary usage. Therefore, the aim this work was implement an alternative for minor trace elements blood serum samples dairy cattle (Bos taurus)...