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。
No presente trabalho, considera-se o estudo do potencial de utilização de resíduos da casca de amendoim, com o intuito de agregar valor a este material, por meio da fabricação de painéis de partículas aglomeradas com resina ureia-formaldeído, prensados à temperatura de 100 ºC. A qualidade dos painéis foi avaliada com…
The dye-sensitized solar cells (DSSCs) have been fabricated using highly ordered TiO2nanotube arrays as photoelectrode and natural dyes as photosensitizers. The natural dyes were extracted from the abundant plants in the tropical region, such asTradescantia zebrina, kapok, and pitaya. The dyes could chemically couple…
A test with wafer discs was used to examine the ability of 20 compounds to inhibit feeding in adults of Sitophilus granarius and Tribolium confusum as well as in the larvae of Tribolium confusum and Trogoderma granarium. The compounds tested were sesquiterpenoids of lactarane, isolactarane, marasmane and 13-normarasma…
Bioengineered skin has great potential for use in regenerative medicine for treatment of severe wounds such as burns or chronic ulcers. Genetically modified skin substitutes have also been used as cell-based devices or "live bioreactors" to deliver therapeutics locally or systemically. Finally, these tissue constructs…
Well‐ordered SBA‐15 was prepared with a hydrothermal route by sodium silicate derived from coal gangue. The as‐prepared sample was analyzed by SAXRD, BET, TEM, and SEM, respectively. The results indicate that at a low hydrothermal temperature of 100∘C the well‐ordered mesoporous SBA‐15 could be synthesized. The surfac…
In order to clarify the effect of solutes on texture formation during high-temperature deformation of BCC solid solution alloys, the texture and microstructure formations in Fe-3.1mass%Si (Fe-Si) and Fe-3.2mass%Si-0.12mass%P (Fe-Si-P) during high-temperature uniaxial compression deformation are studied. The analysis o…
We have observed the piezoelectric and elastooptic effects for the 2-cyclooctylamino-5-nitropyridine complex, chromophore doped by an inter-molecular acceptor – fullerene C 70 . The discovered features may be used for optically operated piezoelectric triggers, modulators and deflectors. The observed effects are caused…
The range of chemical composition for obtaining austenitic single structure was defined in medium-manganese carbon steels. Among the defined composition, Fe-5%Mn-4%Cr-(0.8~1.4)%C was selected as the optimum range of composition to form stable austenitic structure. The tensile property and deformation substructure were…
The Nd2Zr2O7 compound is prepared by using solid state reaction technique. Its structural and electrical properties have been investigated. X-ray diffraction pattern indicates that Nd2Zr2O7 crystallizes in an orthorhombic pervoskite structure. The compound was characterized through powder differential thermal analysis…
The present study deals with the preparation of rice hull-based activated carbon with ammonium nitrate. The obtained carbon was activated at temperatures between 400 and 900 C. The rice hull-activated carbon presented a BET surface area of 456.77 m 2 g -1 and a pore volume of 0.2406 cm 3 g -1 at 600 C. The adsorption…
微藻的生物钙化现象是自然界水体中沉积物形成和碳循环的重要组成部分，对生物钙化现象的研究，有利于人类更好的应对全球气候变化。但目前对微藻生物钙化现象的研究还不充分。本文中对典型钙化蓝藻聚球藻Synechococcus的生物钙化现象进行了实验室研究，考察了水体中钙离子的初始浓度对生物钙化过程的影响。实验测定了藻类生长的变化、溶液pH值、碱度及钙离子浓度的变化，并用扫描电子显微镜观察了沉淀的生成情况。结果表明，聚球藻的存在明显促进了溶液中碳酸钙沉淀的生成。但是溶液中钙离子浓度过高未对碳酸钙沉淀过程产生积极影响。实验条件下，钙离子初始浓度190 mg/L是形成碳酸钙沉淀的最佳条件。>Biocalcification of microalg…
Cd2Os2O7 shows a metal-insulator transition at 227 K with magnetic ordering in an undistorted pyrochlore lattice, but its magnetic structure and the origin of the transition are not yet uncovered. We observed commensurate magnetic peaks by resonant X-ray scattering experiments on a high-quality single crystal. A nonco…
Hexacyanoferrates such as Prussian blue or Ruthenium Purple have great potential for use in microelectrode biosensors. They act as surface-bound mediators that greatly facilitate the detection of H 2 O 2 at modest potentials, thereby increasing the selectivity of the biosensors versus electroactive interferences. We r…
Ni0.5Zn0.5Fe2O4(Ni-Zn) nanostructured thin films have been deposited on Si substrates by chemical solution method using metallo-organic precursors. These films were annealed at different temperature range 450°C-700°C for 2h. The crystalline orientation of the films was changed from (311) to (400) on increasing anneali…
Spray forming is an advanced technology that is used to produce a variety of highperformance materials with the characteristics of rapid solidification. By properly controlling of spray forming parameters, it is possible to fabricate near-net-shaped preforms, such as rod-billets, strips, and tubes. During the billet s…
TSV (Through Silicon Vias) are usually formed and deposited as blind vias. As a last stage, vias are opened by thinning of the back side of the wafer. While the bulk of the silicon can be removed by both wet and dry methods, the final step of the “Via Reveal” process is predominantly performed by wet etch. Two commonl…
This paper presents a new design of high-gain low-proflle resonant cavity antenna. A novel partially re∞ecting surface (PRS) is adopted as the superstrate with the characteristics of high-re∞ection magnitude and low-re∞ection phase that allows the reduction of cavity height to about ‚/8 and the enhancement of the gain…
This paper has modelled one of the accidents in the Pressurised Water Reactor (PWR) reactor containment that is known as Loss of Coolant Accident (LOCA) in its worst condition that is called Large Break LOCA (LB LOCA) with the CONTAIN 2.0 code. Specific type of the LB LOCA is Double-Ended Cold Leg (DECL) break that me…
Titanium tetrachloride with inorganic salts as raw materials in the experiment, TiO2is prepared by the hydrolyzation method in (NH4)2SO4-modified TiCl4solution, the maximal photocatalytic activity is observed at the mole ratio of TiCl4: (NH4)2SO4=1:2, the water-bath temperature of 90°C. Bromophenol blue solution is de…
La réversibilité des doublages est une question complexe et intimement liée à la pénétration des adhésifs au sein de la toile originale. Cette investigation a consisté en la recherche des facteurs d’influence et la mise au point d’une méthode d’évaluation de la pénétration. Les adhésifs testés sont les plus fréquemmen…