Materials Literature
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基于释放的氢气体压力的测量(? H2 _{ H_2 }) ，粉末和纯铝融化的在 TiH2 之间的反应动力学在各种各样的温度被学习。在使样品凉下来以后，粉末和铝融化的 TiH2 的接口被学习。结果证明 2 H ? H2 三个区域 _{ H_2 } 时间曲线有；在第一和第二个区域，反应的率分别地遵守零和一份订单；在第三个区域，氢气体压力遗体常数和反应的率到达零。在第一和第二个区域控制反应的率的主要因素分别地是在在熔融的铝和钛之间的钛格子和化学反应的氢原子的穿入。根据控制反应的率的主要因素，三个温度范围为反应机制被考虑：(a) 700750 ? 楷桴琠敨爠獩 ? 景瀠牥業瑴癩瑩 ? 牯瀠牥敭 'L 汩瑩 ? 景琠敨洠摥畩 ? 潨瑳。
xLa2O3-(1x ) 的拉曼系列 TeO2 (x=0， 0.05， 0.10， 0.15， 0.20，和 0.25 ) 镧 tellurite 眼镜在全部形成眼镜的区域上被测量并且分析以份量上跟随镧氧化物变化引起的结构的变化。第一次，系统的紧张大小被执行了阐明作文在高周波的拉长颤动区域导致了结构的变化，可能的机制被建议。眼镜的网络结构被混合 TeO4 形成三角的 bipyramid 和 TeO3 三角的金字塔单位。镧氧化物内容的变化与无横越氧原子的一个变化数字导致 TeO4 单位的变换到 TeO3 单位。拉曼乐队轮廓的分析由于不同的氧以颤动衔接了三角的 bipyramid 和三角的金字塔 tellurite 结构的单位，允许计…
为尖晶石铁酸盐 nanomaterial 合成的大音阶的第五音胶化汽车燃烧方法的最近的开发和趋势简短被讨论并且极其分析了。能被用于合成过程的更好的理解和微观结构的控制和尖晶石铁酸盐 nanopowder 产品的性质的反应的各种各样的参数的分析是这篇评论文章的主要目的。特殊注意对粒子尺寸和阶段纯净的变化被给予。为这些目的在 complexant，氧平衡和燃烧过程化学药品添加剂，以及加热机制和空气之间的关联，被建立。这些结果从申请的立场是相关的并且铁酸盐处理。
Because of the strong coupling between the magnetic and dielectric properties, the study of quantum paraelectric EuTiO3 has attracted more and more attention in both theoretical and experimental research recently. In this paper, the first principles based on the density functional theory within the generalized gradien…
Shape memory effect and superelasticity are studied in this paper. At room temperature, perfect strain plateaus of 3.3%, 2% and 3% are obtained in the [001], [110] and [111] directions. The energies required to induce the martensitic transformation in different crystallographic directions are estimated from the stress…
BiFeO3 (BFO) and LaMnO3-doped BiFeO3 ((1−x)BiFeO3−x LaMnO3 (x = 0.1), (BLFMO)) thin films were fabricated on Pt(111)/Ti/SiO2/Si(100) substrates by using a chemical solution deposition method. The coated films were annealed at 550 °C for 30 min under a nitrogen atmosphere. The BLFMO thin film exhibited good electrical…
Enzyme-linked immunosorbent assay (ELISA) for monitoring the effects of nanoparticles on immune cells is a conventional method of assessing the levels of cytokine that are released into the culture supernatant after the addition of nanoparticles to a macrophage culture. However, it has been found that the presence of…
In this paper, the liquid-solid equilibrium for the ternary systems composed of 1,2-propanediol, MCl (M=Na, K, Rb, Cs), and H2O were studied at 298.15 and 308.15 K, with the mass fraction of 1,2-propanediol ranging from 0 to 0.9. The solubilities, densities, and refractive indices of the saturated systems, and the den…
Two step reduction method that microwave irradiation combined with high temperature pyrolysis was employed for the preparation of graphene.The two step reduction results in fully reduction and exfoliation of graphite oxide.The obtained graphene is of good conductivity and its specific surface area is up to 675.4 m2.g-…
The sealed state and moisture volatilization of a water-borne sealer for wood furniture using maple-veneered panels were determined for five different natural environments.Drying ability in different conditions was analyzed and the sealed state was studied with a scanning electron microscope(SEM).The dried-water weigh…
Carburized Cs0.2Ni0.8/ZrO2 catalyst is useful for the steam reforming of ethanol (ethanol : water =1:13) at 773 K to produce hydrogen at 1.95 mmol/min/g-cat during 60 h, with 82 % CO2 selectivity with trace amounts of CO and CH4. The cesium addition to the Ni/ZrO2 catalyst resisted the carbon deposition, kept more red…
The extremely hardness, high elastic modulus, excellent wear and corrosion resistance, high thermal and chemical stability, and the low-friction nature of the diamond-like carbon (DLC) coatings open further possibilities in improving tribological performance and reliability of different machine components. However, de…
有机氢化物脱氢催化剂的研究是有机氢化物可逆储氢技术得以循环运用的关键. 首先对若干不同有机氢化物储氢循环中的脱氢反应机理进行了分析, 考察了采用密度泛函理论(DFT)结合研究实例对不同活性组分的脱氢性能进行分析预测的催化剂设计策略, 讨论了不同单金属及双金属催化剂的脱氢性能, 比较了不同活性金属种类及含量、不同的载体及其改性处理、不同的制备方法对催化剂电子性能、结构及其催化活性的影响. 建议采用将DFT理论预测和表面科学实验、先进的催化剂合成方法三者有机结合, 以完成优良脱氢催化剂的理性设计, 从而获得具有良好催化活性的脱氢催化剂.
銅の腐食挙動および孔食形態に及ぼすシリカ，塩化物，硫酸イオンの影響を調べるため，シリカを含む人工淡水中に銅管を最長18カ月間浸漬した．20あるいは40 ppmのSiO2, 10 ppmCl−および10 ppmSO42−を含む試験水に浸漬した銅管表面にマウンドレス型孔食に類似した孔食が発生した．80 ppmSiO2を含む試験水に浸漬した銅管表面は白色粒子状スケールで覆われており，孔食深さは20, 40 ppmシリカを含む試験水のときよりも浅かった．20 ppmのシリカを含む人工淡水中のシリカ濃度は，人工淡水中に銅管が存在する場合，9カ月間で約2 ppmへと減少した．
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We have designed an electrodeposition system employing multiple rotating disc electrodes (RDE) in a single electrochemical bath, with an aim to develop a mean to obtain homogeneous zinc oxide (ZnO) thin films with a high reproducibility, as the reaction is known to be strongly limited by mass transport. Substrates suc…
The results of studies (1989-1999) on the flora and dominant assemblages of planktic algae (Chlorophyta and Streptophyta) in seven shallow weakly mineralized forest lakes are presented. The lakes are located in the Darwin State Reserve (Vologda Region, Russia). It is shown that with increasing of lake acidity species…
Bulk single crystal of the antiferromagnetic quantum paraelectric Europium Titanate was grown by using a floating zone technique. Magnetization and x-ray powder measurements found antiferromagnetic and structural transitions at temperatures consistent with existing literature. X-ray diffraction showed that single doma…
The single-phase perovskite structure of the Ba0.95Pb0.05TiO3+0.1%Co2O3 ceramics was confirmed by the X-ray diffraction method. Microstructural studies revealed that the samples were of good quality and chemically homogeneous. The thermal behaviour of ceramics was studied using the in situ high-temperature X-ray synch…
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