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。
First-principles scalar relativistic calculations in supercells of 16 atoms are used to represent disordered B2 ordering of Fe3Ga in order to observe the effect of Ga–Ga pairs on the electronic structure of this alloy. From a comparison with pure bcc Fe it is observed that the energy position and occupation of eg and…
The importance of glycoside in the regulation of thyroid dysfunction is not well understood. In the present investigation, effects of periplogenin-3- O-D-glucopyranosyl (1→6)(1→4)-D-cymaropyranoside, isolated from the vegetable, LAGENARIA SICERARIA, in L-thyroxine (L-T₄)-induced hyperthyroidism and in related cardiova…
A red-emitting CaZrO 3 :Eu 3+ phosphor has been prepared by solid state reaction and its luminescent properties are studied. The crystal structure is investigated by the x-ray diffraction. Through energy transitions of 5 D 0 → 7 F J (J = 0, 1, 2, 3) in Eu 3+ ions, the emission spectrum of the phosphor shows a series o…
The silicone rubber (SR) nanocomposites have been successfully prepared via the in situ hydrosilylation reaction in the presence of pristine ZnO and vinyl silane modified ZnO ( SiVi@ ZnO ) nanoparticles. The structure of the pristine ZnO and SiVi @ ZnO nanoparticles were analyzed by the Fourier transform infrared spec…
Pollution of outdoor high voltage insulators is a common problem for utilities, with a considerable impact to power system reliability. In an effort to prevent possible flashovers due to pollution, many methods have been applied, aiming to improve the insulation performance, either by suppressing the formation of surf…
Dissipative particle dynamics with energy conservation (eDPD) was applied to study natural convection in differentially heated enclosures. The eDPD simulations were compared to finite volume (FV) solutions. It was found that the eDPD method appropriately predicts the temperature and flow fields inside the enclosure. T…
Abstract Y(NO 3 ) 3 and NH 3 ·H 2 O were used as a raw materials, and nano‐Y 2 O 3 powder was successfully synthesized by a precipitation method. Employing TEOS as a raw material, SiO 2 powder was successfully prepared by a alkoxide‐hydrolysis method, and a Y 2 O 3 /SiO 2 composite powder was obtained by coating. The…
The surge of macromolecular crystallography is intimately linked to the advent of methods for cryoprotecting macromolecular crystals. Only if crystals are kept cold during data collection can they withstand the effects of radiation damage during a diffraction experiment, especially at third-generation synchrotron sour…
Studies of oxide interfaces, and how they affect physical properties, have recently gained large attention. For ferroelectric materials, the evolution of the order parameter close to an interface is important to understand regarding the stability of the ferroelectric phase, and how to optimize devices taking advantage…
The influence of Ce doping and the precipitation method on structural properties and the catalytic activity of copper manganese oxides for CO oxidation at ambient temperature have been investigated. The catalysts were characterized by means of the powder X-ray diffraction and N2 adsorption-desorption, the inductively…
This paper studies the martensitic transformation in the Cu-doped NiMnGa alloys. The orthorhombic martensite transforms to L21 cubic austenite by Cu substituting for Ni in the Ni50−xCuxMn31Ga19 (x=2−10) alloys, the martensitic transformation temperature decreases significantly with the rate of 40 K per Cu atom additio…
Abstract The aim of this work was to study the effects of an organomontmorillonite or organoclay (OMMT) on the properties of a thermoplastic elastomer blend prepared by melt blending and based on polypropylene (PP) and natural rubber (NR). The results obtained showed a slight improvement of the blend mechanical (stren…
Three kinds of low cost shielding materials using boron-containing ores and epoxy as starting materials were developed. The three boron-containing ores consist of natural green ore that is specific in China and the two artificial minerals that are boron-containing iron ore concentrate and boron-rich slag. They were go…
High-quality p-type boron-doped IIb diamond large single crystals are successfully synthesized by the temperature gradient method in a china-type cubic anvil high-pressure apparatus at about 5.5 GPa and 1600 K. The morphologies and surface textures of the synthetic diamond crystals with different boron additive quanti…
We report time evolution studies of low coverage CO adsorption (surface hydrogen site blocking < 40%) and oxidative stripping on stepped Pt(776) and Pt(554) surfaces. It was observed that there is no preferential site occupancy for CO adsorption on step or terrace. It is proposed that CO adsorption onto these surfaces…
The oxygen-deficient Sr2CoMoO6−δ double perovskite has been proposed as an anode material in solid-oxide fuel cells (SOFC). The evolution of its crystal structure has been followed by “in situ” temperature-dependent neutron powder diffraction from 23 °C (RT) to 867 °C in the heating and cooling runs in ultrahigh vacuu…
The thermoelectric properties of Bi-doped compounds (Zn1−xBix)4Sb3 (x=0,0.0025,0.005,0.01) were studied experimentally as well as theoretically. The results indicate that low-temperature (T&lt;300 K) thermal conductivity of moderately doped (Zn0.9975Bi0.0025)4Sb3 reduces remarkably as compared with that of Zn4Sb3…
In this study, new biopolymer nanocomposites have been prepared. Fatty nitrogen compounds (FNCs); fatty amide (FA), fatty hydroxamic acid (FHA), and carbonyl difatty amide (CDFA), which were synthesized from palm oil, have been used as one of organic compounds to modify natural clay (sodium montmorillonite). The clay…
Pollution of outdoor high voltage insulators is a common problem for utilities, with a considerable impact to power system reliability. In an effort to prevent possible flashovers due to pollution, many methods have been applied, aiming to improve the insulation performance, either by suppressing the formation of surf…
Particle lithography which explores the capability of particles to self-assemble offers an attractive means to manufacture nanostructured materials. Although traditional techniques typically lead to the formation of dense crystals, adjustable non-close-packed crystals are crucial in a number of applications. We have r…