Intrinsic Properties
Mostrando 1-12 de 591 artigos, teses e dissertações.
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1. On the Use of a TiO2 Sol-Gel for Horseradish Peroxidase Enzyme Immobilization for Development of an Amperometric Biosensor
The sol-gel technique has drawn considerable attention in the area of biomolecules immobilization by virtue of its intrinsic properties including chemical inertness, thermal stability, and good biocompatibility. The present work reports the development of a bio-sensing methodology which involves the immobilization of horseradish peroxidase enzyme (HRP) on pe
J. Braz. Chem. Soc.. Publicado em: 2021-06
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2. Photoluminescent Investigation of the Doping Site of Eu3+-Doped [Zn3(BTC)2·12H2O] Metal-Organic Framework Prepared by Microwave-Assisted Hydrothermal Synthesis
The [Zn3(BTC)2·12H2O] (BTC = 1,3,5-tricarboxylate) metal-organic framework (MOF) was successfully synthesized using a microwave-assisted hydrothermal synthesis technique, which allowed for significantly decreased reaction time compared to the production of the same compound via conventional heating. In situ doping with Eu3+ ions at concentrations ranging fr
J. Braz. Chem. Soc.. Publicado em: 2020-11
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3. Investigating Surface Properties and Lithium Diffusion in Brookite-TiO2
Surfaces properties of TiO2 in the brookite phase and the lithium diffusion are studied using density functional theory (DFT) and interatomic potential simulations. Simulations predict that the brookite surfaces have a higher intrinsic Lewis acidity compared to the other polymorphs due to the presence of four coordinated Ti atoms on the surface in contrast t
J. Braz. Chem. Soc.. Publicado em: 2020-01
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4. Materials from renewable resources: new properties and functions
Abstract: Sustainable production requires increasing use of raw materials from renewable sources, processed under mild conditions with minimal effluent production. These requirements are satisfied by using materials derived from biomass, in synergy with food and energy production. The possibilities of biomass are continuously enlarged by new findings, as in
An. Acad. Bras. Ciênc.. Publicado em: 21/10/2019
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5. TEMPORAL VARIATION AND SPATIAL DISTRIBUTION OF RELATIVE INDICES OF LEAF CHLOROPHYLL IN GRAPEVINE cv. CHARDONNAY
ABSTRACT Variation in the spatial distribution of leaf chlorophyll content associated with the progression of the phenological cycle of crops may occur in cultivated areas as a result of the variability of environmental conditions and of the intrinsic properties of the plants. The objective of the present study was to model the trend in variation and assess
Eng. Agríc.. Publicado em: 09/09/2019
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6. Superhydrophobic silicon fabricated by phosphomolybdic acid-assisted electrochemical etching
Controllable geometry silicon surfaces with superhydrophobicity are difficult to be fabricated without photolithography techniques. Superhydrophobic silicon surfaces with water contact angle larger than 150º and sliding angle less than 10º have been successfully fabricated by electrochemical etching strategy. Squarelike hole arrays with controllable geomet
Quím. Nova. Publicado em: 26/08/2019
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7. Study on mechanical & thermal properties of PCL blended graphene biocomposites
Abstract Graphene is a new carbon based nonmaterial that attracts the technology and constitutes one of the great promises for nanotechnology applications in a near feature. It’s having versatile intrinsic mechanical, thermal and electrical properties.By Incorporation of small amount of graphene fillers into polymer matrix can create attractive bio composi
Polímeros. Publicado em: 04/07/2019
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8. Escala de Motivação Académica: Validação no Ensino Superior Público Português
Resumo Esta investigação teve como objetivo o estudo das propriedades psicométricas e posterior validação da Escala de Motivação Académica proposta por Guimarães e Bzuneck (2008), em Portugal, através da utilização de duas amostras, a Amostra A constituída por 568 estudantes do ensino superior público e a Amostra B constituída por 589 estudant
Rev. adm. contemp.. Publicado em: 27/06/2019
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9. The Academic Self-Regulation Questionnaire: a study with Portuguese elementary school children
Abstract Background: Several studies have focused on the assessment of students' motivation because this construct is very important to understand students' learning and how to enhance it. The Academic Self-Regulation Questionnaire (SRQ-A), based on the self-determination theory is a self-report instrument developed to access the reasons why students do the
Psicol. Reflex. Crit.. Publicado em: 20/05/2019
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10. Experimental and numerical evaluation of mortar specimens shape and size influence on compression tests
Resumo A resistência à compressão axial de compostos cimentícios é um parâmetro importante para classificação, aferição de qualidade e dimensionamento desses materiais. Os valores obtidos nos ensaios são diretamente influenciados pelas propriedades intrínsecas dos compostos e por fatores externos, como dimensão e forma dos corpos de prova. O pre
Rev. IBRACON Estrut. Mater.. Publicado em: 20/05/2019
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11. Work-Related Flow Inventory: Evidence of Validity of the Brazilian Version
Resumo Flow no trabalho constitui-se pelas experiências positivas e estado mental vivenciados durante as atividades ocupacionais do dia a dia. Este estudo tem como objetivo adaptar e avaliar as propriedades psicométricas da versão Brasileira do Inventário de Flow no Trabalho (WOLF). Os participantes desta pesquisa foram uma amostra nacional de 640 profis
Paidéia (Ribeirão Preto). Publicado em: 04/02/2019
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12. Adsorción y oxidación de monóxido de carbono en una lamina de ß-grafino: Estudio teórico
ABSTRACT This work presents a study, based on the Density functional theory (DFT), of the adsorption and oxidation of CO on a free platinum catalyst constituted from a sheet of Graphyne. Graphyne is a new allotrope of carbon, its structure is two-dimensional and is constituted by a monolayer of carbon atoms with sp-sp2 hybridization. Depending on the differe
Matéria (Rio J.). Publicado em: 19/07/2018