Doping
Mostrando 25-36 de 324 artigos, teses e dissertações.
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25. Mechanical properties and morphological characteristics of ARALL reinforced with TRGO doped epoxy resin
ABSTRACT Mechanical properties in tension, bending, fatigue and lap-shear in two different proportions (0.5%wt and 1%wt) of TRGO (Thermally Reduced Graphite Oxide) doped ARALL (Aramid Aluminium Laminate) were examined. The materials and their failure modes were characterized morphologically by examination through SEM (Scanning Electron Microscopy). Some mech
Matéria (Rio J.). Publicado em: 06/12/2018
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26. Ga Dopant Induced Band Gap Broadening and Conductivity Enhancement in Spray Pyrolysed Zn0.85Ca0.15O thin Films
Ga doped Zn0.85Ca0.15O thin films were prepared by spray pyrolysis method and studied the impact of Ga doping concentration on the physical properties of these films. XRD analysis confirmed the structural purity and polycrystalline nature of the films and composition analysis verified the incorporation of dopants in the structures. Optical transmission in th
Mat. Res.. Publicado em: 03/09/2018
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27. Effect of thermal treatment on points defects of Al-N codoped ZnO films
ABSTRACT The effect of annealing temperature on the structural properties of Al-N codoped ZnO films were studied by X-ray diffraction, photoluminescence and Raman spectroscopy. ZnO films were deposited by sputtering technique on silicon substrates at 20 ºC, Al-concentration was kept constant and N-flow was changed to 6, 12 and 15 sccm. A thermal treatment w
Matéria (Rio J.). Publicado em: 19/07/2018
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28. Enhancing the Supercapacitive and Superparamagnetic Performances of Iron Oxide Nanoparticles through Yttrium Cations Electro-chemical Doping
A one-pot electrosynthesis platform is reported for fabrication of Y3+ doped iron oxide nanoparticles (Y-IONPs). In this procedure, Y-IONPs are electro-deposited from an additive-free aqueous solution of iron(III) nitrate, iron(II) chloride and yttrium chloride. The analysis data provided by X-ray diffraction (XRD), field emission electron microscopy (FE-SEM
Mat. Res.. Publicado em: 10/07/2018
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29. Anelasticity of Phase Transitions and Magnetostriction in Fe-(27-28%)Ga Alloys
Several aspects of anelastic behavior of Fe-(27-28%)Ga-Tb alloys are considered in this paper: (i) the phase transitions from a metastable to an equilibrium phase and phase transitions between equilibrium phases at higher temperatures in as cast alloys, (ii) the nature of corresponding three transient anelastic effects, (iii) the formation of an intrinsic co
Mat. Res.. Publicado em: 07/06/2018
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30. Kinetics of Vacancy Doping in SrTiO3 Studied by in situ Electrical Resistivity
The kinetics of annealing to transform stoichiometric SrTiO3 insulator into a vacancy-doped semiconductor-superconductor was revisited by in situ electrical resistivity measurements. SrTiO3 single crystals were grown by Floating Zone Method. Using a homemade apparatus several electrical resistivity as a function of time were measured at different temperature
Mat. Res.. Publicado em: 03/05/2018
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31. Estudo exploratório sobre agentes farmacológicos ilegais no desempenho em artes marciais mistas
Resumo O Mixed Martial Arts (MMA) é um esporte de combate que exige a máxima capacidade física durante as competições, neste contexto, alguns atletas podem administrar substâncias ilícitas, com fins de ampliar artificialmente sua performance. Por meio de análise pareada, o presente estudo comparou as ações motoras de lutadores flagrados no teste de
Rev. bras. cineantropom. desempenho hum.. Publicado em: 2018-05
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32. Preparation and Characterizations of Monocrystalline Na Doped NiO Thin Films
In the present work, the effect of Na doping on optical, structural and electrical properties of Na doped NiO thin films were studied. The spray pneumatic method was used to deposit the Na doped NiO thin films in the range 0 to 5 wt.%, it are investigated at a substrate temperature of 420 °C with NiO solution 0.1 M. Firstly in the XRD specra, as found that
Mat. Res.. Publicado em: 05/03/2018
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33. Structural, optical and electrical properties of Ni-doped Co3O4 prepared via Sol-Gel technique
In this article, Nickel doped Cobalt oxide thin films and powders have been prepared on glass substrates using sol gel based dip coating process in order to investigate their optical, structural and electrical properties. The Ni concentration was changed from 0 to 9 wt(%).The synthesized samples were characterised by Ultraviolete visible analysis, X-ray diff
Mat. Res.. Publicado em: 07/02/2018
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34. OPTOELECTRONIC PROPERTIES OF TRIPHENYLAMINE BASED DYES FOR SOLAR CELL APPLICATIONS. A DFT STUDY
Abstract: Dye-sensitized solar cells (DSSCs) based on triphenylamine (TPA) as a donor group linked with the acceptor cyanoacrylic acid electron acceptor by 2,2’-bithiophene as π-bridged (D-π-A) has been investigated by Density Functional Theory (DFT) at the B3LYP/6-311G(d,p) level of theory, to establish the conformational orientation of cyanoacrylic aci
Quím. Nova. Publicado em: 2018-02
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35. Doping genético: uma questão sociocientífica para o ensino superior
Parte do livro:Questões sociocientíficas: fundamentos, propostas de ensino e perspectivas para ações sociopolíticas
Autor(es): Silva, Shirley Margareth Buffon da
EDUFBA. Publicado em: 2018
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36. LEVANTAMENTO DE DOPING NOS JOGOS ESCOLARES DA JUVENTUDE NO BRASIL
RESUMO Introdução: O controle de dopagem é um meio importante para a prevenção do uso de substâncias e métodos ilegais no esporte. Objetivo: Este estudo investigou o uso autorrelatado de substâncias ilícitas entre jovens estudantes brasileiros nos Jogos Escolares da Juventude, o principal evento esportivo entre atletas em idade escolar do Brasil, co
Rev Bras Med Esporte. Publicado em: 2017-12