A5035657675- Advanced Condensed Matter Physics
- High-pressure geophysics and materials
- Physics of Superconductivity and Magnetism
- Magnetic and transport properties of perovskites and related materials
- Multiferroics and related materials
- Nanopore and Nanochannel Transport Studies
- Kidney Stones and Urolithiasis Treatments
- Graphite, nuclear technology, radiation studies
- Spectroscopy and Chemometric Analyses
- Magnetic Properties of Alloys
- Rare-earth and actinide compounds
- Clay minerals and soil interactions
- Nuclear Physics and Applications
- Anodic Oxide Films and Nanostructures
- Nuclear Materials and Properties
- X-ray Spectroscopy and Fluorescence Analysis
- Water Quality Monitoring and Analysis
- Graphene research and applications
- Radioactive element chemistry and processing
- Nanofabrication and Lithography Techniques
- Iron oxide chemistry and applications
- X-ray Diffraction in Crystallography
- Minerals Flotation and Separation Techniques
- Radiation Effects and Dosimetry
- Tailings Management and Properties
Universidade Braz Cubas
2023
Universidade Federal do Espírito Santo
2002-2019
X-ray powder diffraction was used to study the phase composition of human renal calculi. The stones were collected from 56 donors in Vitória, Espírito Santo state, southeastern Brazil. An XRD quantification revealed that 61% studied composed exclusively calcium oxalate [34% formed only by monohydrate (COM) and 27% presents both dihydratate oxalate]. 39% multi-composed calculi have various other phases such as uric acid phosphate. Rietveld refinement data one apparent monophasic calculus...
Mercury superconductor samples doped with rhenium, Hg0.82Re0.18Ba2Ca2Cu3O8+d, were produced in a very narrow range of oxygen content (d = 0.05, 0.10 and 0.15). The lattice parameters indicated slight change the unitary cell as function content. Furthermore, reduction volume was associated increment TC. measurements χac versus temperature, under external hydrostatic pressure, have shown sensitive results distinct In our opinion, this kind measurement may be used tool to determine (underdoped,...
ReO2 presents two crystalline variants, with monoclinic and orthorhombic structures. The former is metastable irreversibly transforms to an structure above 460ºC. of the latter was determined from studies on monocrystalline samples, whereas for variant there are no single crystals available so far. It found only one associated this based polycrystals. We analyzed a oxide powder sample by X-ray diffraction refined its pattern means Rietveld Method. obtained that belongs space group P2(1)/c,...
O acidente com a barragem de Fundão, Mariana, MG, lançou toneladas rejeitos minério ferro no sistema fluvial do Rio Doce. Apesar da composição natural dos sedimentos fluviais, caracterizada por fases minerais relativamente comuns como quartzo, muscovita, caulinita e illita até mesmo certos teores hematita goethita, é importante verificar abundância magnetita após o acidente. Os pós-acidente cidade Mariana foram analisados difração raios X Syncrotron, EDXRF suscetibilidade AC. Foi encontrado...