A5070107321- Science and Education Research
- Multiferroics and related materials
- Bone Tissue Engineering Materials
- biodegradable polymer synthesis and properties
- Recycling and utilization of industrial and municipal waste in materials production
- Advanced Sensor and Energy Harvesting Materials
- Education and Digital Technologies
- Education Pedagogy and Practices
- Electrospun Nanofibers in Biomedical Applications
- Natural Fiber Reinforced Composites
- Ferroelectric and Piezoelectric Materials
- Pigment Synthesis and Properties
- Education during COVID-19 pandemic
- Academic Research in Diverse Fields
- Iron oxide chemistry and applications
- Additive Manufacturing and 3D Printing Technologies
- Environmental Sustainability and Education
- Chemistry Education and Research
- Smoking Behavior and Cessation
- Food Chemistry and Fat Analysis
- Advanced Condensed Matter Physics
- Perovskite Materials and Applications
- Rural and Ethnic Education
- Proteins in Food Systems
- Advanced ceramic materials synthesis
Universidade Estadual do Centro-Oeste
2010-2023
Universidade Estadual do Paraná
2022-2023
Universidade Estadual do Oeste do Paraná
2023
Shiseido Group (Japan)
2017
Universidade de São Paulo
2005-2007
Truck drivers work under conditions that predispose them to a high prevalence of risk factors for the development cardiovascular disease (CVD); however, these have not been fully evaluated and are usually considered be within scope health or labor services. An observational cross-sectional study was conducted on 250 long-distance truck drivers; were all male aged 18-60 years. The clinical evaluation consisted an assessment social habits demographic data CVD at 3 time points separated by...
Biomaterials that effectively act in biological systems, as treatment and healing of damaged or lost tissues, must be able to mimic the properties body's natural tissues its various aspects (chemical, physical, mechanical surface). These characteristics influence cell adhesion proliferation are crucial for success which a biomaterial will required. In this context, electrospinning process has gained prominence obtaining fibers micro- nanometric sizes from polymeric solutions aiming produce...
The thermal effect on the phase evolution and crystallinity of raw cobalt-modified Brazilian bentonites was investigated. modified were prepared dispersing bentonite particles in Co2+ hydroxide gels. samples characterized by X-ray diffraction, Fourier transform infrared spectroscopy, analyses energy dispersive spectroscopy. An endothermic peak around 900 °C indicated formation olivine. A test with benzyl alcohol confirmed catalytic activity as acidic catalyst for oxidation.
This study presents the preparation and characterization of composite materials using Plastic Waste from Hydrapulper (PWH) paper industries extruded with sugar cane fiber residues ethanol industries. The factorial design showed that material 40% fiber, pressed 5 ton was optimized condition. main findings attested is resistant up to 250 °C its hardness increased compared raw PWH. presented woodsy aspect although water absorption has increased. So, this offers a good alternative for use...
A porcelana de ossos - bone china é uma cerâmica corpo especial grande dureza e translucidez exclusivamente fabricada na Inglaterra em outras poucas partes do mundo, mas não no Brasil. Suas matérias-primas são compostas por aproximadamente metade cinza ossos, além caulim feldspato. O trabalho apresenta a obtenção caracterização partir bovinos com o objetivo da fabricação porcelanas. No processo preparação envolve uso autoclave, descarnagem manual, calcinação moagem dos ossos. As condições...
In this manuscript, an innovative and bioactive polyvinylidene fluoride-biphasic calcium phosphate (PVDF-BCP) ferroelectric composite was synthesized characterized. FTIR investigations reveal that our synthesis method promotes a deep change in the PVDF structure, leading to emergency of polar β-PVDF phase PVDF-BCP composite. Microstructural analyzes performed samples immersed simulated body fluid elevated growth rate synthetic osseous tissue (apatite, ∼15 μm 7 days) on surface, attesting its...
Abstract A ceramic/polymer biocomposite with high potential for multifunctional practical applications in bone tissue engineering was synthesized by using a well-known piezoelectric polymer, polyvinylidene fluoride (PVDF), and bioactive biphasic calcium phosphate (BCP) ceramic obtained from recycled fish bones. High-bioactivity observed the PVDF-BCP composite when it subjected to conditions that simulate animal body once very thick apatite layer (9 μm) grown on its surface an immersion...
Perovskites have been pointed out as promising candidates for several technologic areas, especially photovoltaic applications. In this work, CaTiO3 compounds were synthesized by using the Pechini method and their structural, optical, electrical properties investigated. Tilted octahedral oxygen arrangements with a single center of symmetry positive negative electric charges are observed, forming nonpolar perovskite structure. The origin observed structural distortions is directly linked to...
The use of cellulosic fibers in composites is advantageous compared to inorganic materials, because they present lower density, abrasiveness and cost, besides the renewable origin. This study aimed evaluate influence wood pulp obtained by chemical (bleached unbleached) mechanical process, wood-flour Pinus taeda as reinforcement low density polyethylene (LDPE) matrix. were extruded specimens molded compression. samples characterized thermal analysis, properties scanning electron microscopy...
Resumo Neste trabalho uma rota alternativa de síntese, o método Pechini modificado, foi utilizada para obter nanopartículas do composto BiFeO3-PbTiO3 (BFPT). As imagens obtidas por microscopia eletrônica varredura revelaram tamanhos partículas inferiores a 120 nm. Análises estruturais apontaram organização estrutural (formação estruturas com simetria tetragonal) como função da temperatura síntese. Cálculos polarização espontânea indicaram intensidade alcançada no BFPT. análises densidade...
Artificial materials with piezoelectric properties have been increasingly investigated as potential candidates for replacing various living tissues. In this manuscript, results of studies on the synthesis and characterization PVDF/PLA blend filaments containing piezoelectric/ferroelectric PVDF β-phase are reported. SEM images reveal that all studied immiscible blends, while FTIR blends a predominance β-polar phase whose highest percentage (75%) was observed mass ratio 80% to 20% PLA. This...
In this manuscript, microstructural, structural and magnetic properties of pure La doped (0.6)BiFeO3-(0.4)PbTiO3 polycrystals were investigated. X-ray diffraction, transmission scanning electron microscopy results reveal morphologically uniform particles rhombohedral rhombohedral/tetragonal symmetries for samples. An enhanced magnetization, characterized by slim loop hysteretic curves null remnant magnetization 2 emu/g saturation (15 kOe) is observed at room temperature samples with average...
In this work, the nanostructuration effects on physical properties of pure and La doped (0.6)BiFeO3-(0.4)PbTiO3 magnetoelectric nanoparticles were investigated. An exotic magnetic response, mimicking a superparamagneticlike behavior that raised magnetization to levels never reported before for these materials, is clearly observed. Another important change associated with observed in symmetry perovskite-structured which changes from tetragonal rhombohedral one. Transmission electron...
O presente artigo vai relatar o planejamento, desenvolvimento e aplicação de uma sequência didática no formato Unidade compartilhada Ensino Potencialmente Significativa (UcEPS), variação da (UEPS), sobre tema Coronavírus. Esta alternativa diferenciada justifica-se pelo fato tratar-se um trabalho interdisciplinar, ou seja, compartilhamento refere-se a abordagem do por mais disciplina. A metodologia utilizada foi cunho qualitativo. Os alunos que participaram deste frequentam Escola Estadual na...
O artigo tem como objetivo apresentar parte dos resultados de pesquisa e um produto educacional obtidos ao utilizar a plataforma gamificada Nivelamento Online (NiO) em turmas física do ensino médio. Esse educacional, que consiste tutorial da Sala Mestre NiO uma sequência didática física, é resultado Dissertação Mestrado Profissional Programa Pós-Graduação Ensino Ciências Naturais Matemática - UNICENTRO. Tal auxilia docentes no intuito o ambiente professor Online, além roteiro aplicação...
In this paper, the rheological behaviors of dispersions two types clays a kaolin and smectitic clay from Paraíba State, Northeastern Brazil, were investigated. Both are mainly employed by ceramics industries in Southern States São Paulo Santa Catarina. Viscosity measurements water three alcohols (methanol, ethanol, propanol) carried out concentric cylinder geometry viscometer. The concentration was 20 wt.% water-alcohol suspensions containing up to 75 each one alcohols. results compared discussed.