A5112299256- Physics of Superconductivity and Magnetism
- High-pressure geophysics and materials
- Magnetic and transport properties of perovskites and related materials
- Superconducting Materials and Applications
- Advanced Condensed Matter Physics
- Advancements in Battery Materials
- Acoustic Wave Resonator Technologies
- Social Sciences and Governance
- Advanced NMR Techniques and Applications
- Supercapacitor Materials and Fabrication
- NMR spectroscopy and applications
- Catalytic Processes in Materials Science
- French Urban and Social Studies
- Graphite, nuclear technology, radiation studies
- Social Policies and Family
- Magnetic Properties and Synthesis of Ferrites
- Metallurgical and Alloy Processes
- biodegradable polymer synthesis and properties
- Lubricants and Their Additives
- Dental materials and restorations
- Catalysis and Hydrodesulfurization Studies
- Forensic and Genetic Research
- Dental Implant Techniques and Outcomes
- Adsorption and biosorption for pollutant removal
- X-ray Diffraction in Crystallography
University of Minho
2025
Universidade Federal do Espírito Santo
2011-2022
National Observatory
2021
Secretaria Municipal de Saúde
2021
Universidade do Estado do Rio de Janeiro
2014
University of Warwick
2009
University of Finance and Economics
2006
Universidade Estadual de Campinas (UNICAMP)
2003
Centro Brasileiro de Pesquisas Físicas
1997-2000
Louisiana State University in Shreveport
1984-1985
Resumo: Um fator comum entre as pessoas brancas é a negação de que são sujeitos racializados, modo se utilizam da fragilidade e inocência branca como estratégias para proteção usufruto do privilégio superioridade racial. Em contraponto, arte decolonial constituída por um conjunto obras ambicionam desvincular produção artística dos não-europeus não-brancos uma suposta posição inferioridade calcada na colonialidade. Assim, esta pesquisa buscou compreender o teatro negro, entendido sob essa...
Abstract: A common factor among white people is the denial that they are racialized subjects, so use fragility and innocence as strategies to protect enjoy privilege racial superiority. By other hand, decolonial art made up of a set works aim separate artistic production non-Europeans non-whites from supposed position inferiority based on coloniality. Thus, this research sought understand how black theater, understood perspective, provides Brazilian Portuguese spectators with racializing...
Obtaining single-phase Hg1–xMxBa2Ca2Cu3O8+δ materials has proved difficult using the sealed quartz tube technique, mainly because of poor knowledge synthesis mechanisms. A technique is described for measurement system pressure in situ, allowing both thermodynamic and kinetic aspects reaction to be investigated. The power this demonstrated by studying stability Hg0.82Re0.18Ba2Ca2Cu3O8+δ compound, but should also applicable in-situ determination gas–solid reactions.
Thanks to a novel technique (thermobaric analyser or TBA) for measuring the in situ pressure quartz tubes, we have investigated precursor quality synthesis of superconductor Hg-1223 which is an essential parameter control. We made this study on samples and can conclude that phase requires ceramic sintered low mixture gas flux. An excessively oxygenated leads overdoped superconducting phases, presence other members with lower n, some unreacted precursor. The oxygenation degree also modifies...
ACTIVATED CARBON FROM RICE HULLS.This work consists in a study about the chemical activation of charred rice hulls using NaOH as agent.The influence naturally-occurring silica was particularly evidenced.X-ray diffraction patterns showed formation sodium carbonate and silicates activated samples, whereas thermogravimetric curves revealed strong reduction ash content these samples after washing with water.Nitrogen adsorption data indicated microporosity development only washed BET surface area...
The chemical and physical properties of a Brazilian heavy oil submitted to plasma treatment were investigated by 1H low- high-field nuclear magnetic resonance (NMR) combined the characterization rheological properties, thermogravimetry measurement basic sediments water (BSW) content. crude was treated in dielectric barrier discharge reactor, using natural gas, CO2 or H2 as working gas. results indicated large drop content plasma-treated samples compared oil, giving rise reduction viscosity....
El objetivo del presente estudio fue analizar la prevalencia de caídas en adultos mayores y los factores asociados a las caídas. La caída definida como el cambio una posición otra, nivel inferior, caracterizando un síndrome geriátrico. Se observó alta viviendo comunidad- 30% 40% personas por encima 65 años, verificándose que mitad llegó caer más vez. aumentó con edad, llegando 50% 80 años. En Unión Europea ocurren, año, cerca 40.000 muertes debido Los años tienen tasa mortalidad, asociada...
Solid-state 13 C nuclear magnetic resonance (NMR) spectroscopy was used in this work to analyze the physical and chemical properties of plasma blacks carbon deposits produced by thermal cracking natural gas using different types reactors. In a typical configuration with double-chamber reactor, N 2 or Ar injected as working first chamber second chamber, inside arc column. The solid residue collected at points throughout apparatus analyzed solid-state NMR spectroscopy, either cross...
To evaluate the changes in external-hexagon surface of titanium (Ti) implant before and after mechanical cycling, when coupled with zirconia (Zr) abutments (A) manufactured by three computer-aided design/computer-aided manufacturing (CAD/CAM) systems (Neodent Digital, Zirkonzahn, AmannGirrbach) ZrTi abutment Neodent.Four groups were formed (n = 6): Zr AmannGirrbach (AZrAG), Zirkonzahn (AZrZ), Neodent (AZrN), infrastructure Ti (AZrTiN). Standardized made from identical milled wax. Images each...