Materials Literature
按标题、摘要、年份、主题和来源检索公开元数据。结果保留作者、摘要、分类与原始来源链接。
Abstract Silk fibroin has attracted great attention due to its superior mechanical properties such as ultra-high strength and stretchability, biocompatibility, as well as its versatile biodegradability and processability [1]. They can be made into various morphologies such as sponges, hydrogels, films, mats and partic…
An iterative domain decomposition method is proposed for numerical analysis of three-dimensional linear magnetostatic problems taking the magnetic vector potential as an unknown function. The iterative domain decomposition method is combined with the Preconditioned Conjugate Gradient (PCG) procedure and the Hierarchic…
Dans les grandes machines tournantes de haute tension, le systeme d’isolation est continuellement soumis a des contraintes multiples provoquant des degradations importantes de ses proprietes electriques reduisant ainsi la duree de sa vie utile. L’utilisation d’un revetement anti-effluves dans les tetes de bobines, est…
Stem cells’ research reached an advanced stage with clear understanding of the ability of multipotent mesenchymal stem cells to maturate to different metabolically mature cells of the connective tissue. In combination with advancement in genetic research it is now possible to start decoding basic cellular mechanotrans…
In this paper, the structural, magnetic and electrical properties of multiferroic BaFe12O19/MgFe2O4/BaTiO3 composites have been studied. BaFe12O19/MgFe2O4/BaTiO3 composites were synthesized by using the conventional solid state reaction technique and sintered at different temperatures. XRD analysis confirmed the exist…
Dissertação (mestrado)—Universidade de Brasília, Instituto de Ciências Biológicas, Programa de Pós-Graduação em Biologia Animal, 2016.
Las pinturas anticorrosivas tradicionalmente empleadas que contienen pigmentos a base de compuestos de cromo y de plomo han sido cuestionadas en los países desarrollados por su elevada peligrosidad para la salud y polución del medio ambiente. Actualmente existe una tendencia mundial a eliminar dichos pigmentos y reemp…
The preparation of new sensor for glucose was based on the fact that glucose can be determined by non-enzymatic glucose oxidase. The Ni metals (99.98% purity, 0.5 mm thick, Aldrich Chemical Company) was used to prepare Ni-Epoxy electrode. The Ni-epoxy electrodes were prepared in square cut of 1 cm and 1 mm by length a…
Silver-silica nanocomposites (Ag-SiO2NCs) with various compositions were synthesized through sol-gel technique. The morphology, optical and thermal stability of the nanocomposite were investigated and was compared with pure sol-gel to determine the effects of the nanoparticles. Transmission electron microscopy (TEM) c…
Purpose This paper presented a new kind of ring spinning frame with four pairs of rollers, and they are the front roller and the front top roller, the first middle roller (FMR) and the first middle top roller (FMTR), the second middle roller and the second middle top roller, the back roller and the back top roller. Th…
Li+ and Zr2+ codoped NiO ceramics was successfully prepared from the mixture of commercial Li2CO3, ZrO2 and NiO using solid state reaction. The mixture of varies Li+ concentration (x = 0.01, 0.02, 0.03, 0.05 and 0.1), Zr2+ (y = 0.02) and NiO were ball milled for 24 hours. The samples were calcined at 1000oC for 2 hour…
Abstract We experimentally studied the SiO2/Si and Si/buried oxide (BOX) interface regions of a two-dimensional (2D) Si layer, by forming gas annealing (FGA). A photoluminescence (PL) result measured at various lattice temperature, T L, values shows that the PL intensity I PL of the 2D-Si layer rapidly increases and t…
Lo studio della convezione naturale in cavità quadrata con sorgenti discrete è svolto sia sperimentalmente che numericamente. Sperimentalmente attraverso l'interferometria olografica e il Particle Image Velocimetry mentre numericamente attraverso l'utilizzo del software CFD ANSYS Fluent. Sono presentati 7 diversi st…
This paper reports on the phase-matching properties of GaS0.4Se0.6 for type-2 difference-frequency generation (DFG) between a Nd:YAG laser and a Nd:YAG laser-pumped β-BaB2O4 optical parametric oscillator (BBO/OPO) in the 100.4- 1030.6μm (0.291-2.988THz) range together with the refined Sellmeier equations for GaSxSe1-x…
Of all metallurgical problems that face civilization, only a few can be economically more important than the prevention of metallic corrosion. Environmental attack on metal produces a destructive effect on their physical and mechanical properties which consequently, contributes to economic loses, impairs the safety of…
Polycrystalline perovskite Eu0.98Ba0.02TiO3, in which Eu2+: 4f7spins order antiferromagnetically below TN= 4.6 K, shows a large positive magnetodielectric effect (MDE) and a negative magnetoresistance (MR) in the paramagnetic state. The MDE ~ +120% and MR ~ -91% for f = 1 kHz at T = 10 K and under μ0H = 7 T. The field…
Nickel nanoparticles are incorporated in Sm3+ doped zinc phosphate glass having a composition of 40ZnO-(58-x)P2O5-1Sm2O3-xNiO, with x = 0.0 and 2.0 mol% prepared by melt quenching technique. Sample characterizations are made by means of X-ray diffraction, transmission electron microscopy (TEM) and vibrating sample mag…
Mg doped Zinc oxide nanorods films were successfully deposited on glass substrate prepared by aqueous solution-immersion method. The influence of annealing temperature on the nanorod films were studied at different annealing temperatures 0°C, 250°C and 500°C respectively. FESEM showed the morphology of the films with…
A single hybrid solar cell (SHSC) which consist of zinc oxide (ZnO) micro-rod and Poly (3-dodecylthiophene)(P3DDT) materials with nature dye from Melastomamalabathricum fruit (Mm) were fabricated to determine it electrical properties and power conversion efficiency (PCE). The ZnO microrod was growth by thermal method.…
The demand for tunable surface plasmon (SP) of embedded metal nanoparticles (NPs) in rare earth doped inorganic lasing glasses is ever-growing. Following melt quenching method Er3+ doped zinc-boro-tellurite glasses containing silver (Ag) NPs are prepared. Glasses are heat treated (thermally annealed) at varying temper…