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。
We report on a member of the spin-disordered honeycomb lattice antiferromagnet in a quasi-one-dimensional cobaltate Ba_3Co_2O_6(CO_3)_0.7. Resistivity exhibits as semimetallic along the face-sharing CoO6 chains. Magnetic susceptibility shows strongly anisotropic Ising-spin character with the easy axis along the chain…
Strong spin-orbit coupling in topological insulators results in the ubiquitously observed weak antilocalization feature in their magnetoresistance. Here we present magnetoresistance measurements in ultra thin films of the topological insulator Bi_2Se_3, and show that in the 2D quantum limit, in which the topological i…
MgH 2 is a promising material for reversible solid‐state hydrogen storage. It is known that particle size can have a strong impact on hydrogen dynamics and sorption characteristics, but more detailed insight has been hampered by the great challenge to prepare small and well‐defined particles and study their hydrogen s…
Metallic nanoparticles (MeNPs) can be formed in living plants by reduction of the metal ions absorbed as soluble salts. It is very likely that plant metabolism has an important role in MeNP biosynthesis. The in vivo formation of silver nanoparticles (AgNPs) was observed in Brassica juncea, Festuca rubra and Medicago s…
Arrays of aligned semiconducting single-walled carbon nanotubes (s-SWCNTs) with exceptional electronic-type purity were deposited at high deposition velocity of 5 mm min(-1) by a novel "dose-controlled, floating evaporative self-assembly" process with excellent control over the placement of stripes and quantity of s-S…
A straightforward strategy has been used to construct large BN-embedded π-systems simply from azaacenes. BN heterosuperbenzene derivatives, the largest BN heteroaromatics to date, have been synthesized in three steps. The molecules exhibit curved π-surfaces, showing two different conformations which are self-organized…
In this study the nanostructure formation on vanadium surfaces due to laser irradiation in air, water, and ethanol ambients is investigated. Two laser systems have been used for the nanostructure creation with rather different pulse lengths (Ti:sapphire laser: 22 fs and XeCl-dye laser: 0.6 ps). Depending on the differ…
The strucrture of CdS quantum dots 0,3% (mass), stabilized by the solution of the mercaptosuccinic acid in the gel matrix 50% THEOS is investigated by small-angle X-ray scattering (SAXS). Application of modern methods of SAXS data interpretation, including procedure of ab initio modeling of particle structure, allowed…
A full-length cDNA sequence coding for Dehydration-responsive protein gene of mulberry tree, which we designated was MRD22 (GenBank accession number: JQ804833) was cloned based on mulberry expressed sequence tags (ESTs). MRD22 is 1503 bp long, contains a 334 bp 5'-UTR (untranslated region) and a 563 bp 3'-UTR, encodes…
This two-part article covers corrosion risk assessment of electric power transmission and distribution structures. It spans the design, manufacturing, shipping, storage, construction, and service stages. At each stage, there is a risk of corrosion that must be considered. Part 1 covers the metallurgy of steel and galv…
The Co 3 O 4 nanoparticles were obtained from the precursor precipitated by CoCl 2 and NaHCO 3 via precipitation method, and were characterized by IR, XRD. The firing system of precursor was detected by TG-DSC, and the effects of temperature on grain size were investigated.
The current study showed the ability of Prosopisfarcta L. plants to uptake and accumulate pollution caused metals present in the environment, and their role on the phytoremediation by indication of Zinc oxide nanoparticles uptake at various concentrations. For this purpose Zinc oxide nanoparticles of 120 nm were used…
Two types of mullite-Al 2 O 3 composites were designed and sintered in situ from different composition containing Al composites e.g. kaolin, alumina hydroxide and calcined bauxite etc, and auxiliary additives. The phase composition and microstructure were studied using X-ray diffraction (XRD) and scanning electron mic…
In order to improve the sinterability of the cBN, surface oxidation treatment was conducted to form a B 2 O 3 film on the surface of the cBN powders. The cBN powders ( d 50 = 7.5 μm) were used as original powders. The heat treatment processes were 500, 800, 900, 950, 980 and 1000 °C holding for 30 minutes, respectivel…
A new method for solving thermoelasticity problems for thick and thin shells in the three-dimensional formulation is considered. According this method, a shell body is divided into N sampling surfaces parallel to the middle surface and located at Chebyshev polynomial nodes to choose temperatures and vectors of displac…
Латышева НИИСФ, *ТГУ МЕТОДИКА РАСЧЕТА ПАРАМЕТРОВ ДЕФОРМИРОВАНИЯ БЕТОНА ПРИ РАЗГРУЗКЕ С НАПРЯЖЕНИЙ СЖАТИЯРассмотрены циклы с разными величинами максимальных напряжений, в т.ч.близких к предельным значениям с учетом дилатации бетона.Остаточные деформации при разгрузке определены в приращениях напряжений
The discovery of a perfectly ordered 3D mesoporous protein/silica structure in the axial filament of the marine sponge Monorhaphis chuni is reported by I. Zlotnikov and co-workers on page 1682. The structure belongs to a body-centered tetragonal symmetry system and comprises interconnecting lattices of protein (red) a…
Rare-earth type oxides (RE2O3) are the most stable rare-earth compounds, in which optically active rare-earth ions hold typically a trivalent state. Among all the rare-earth oxides, cubic phase Gd2O3is an excellent luminescent host material because of its low phonon energy (phonon cutoff ≈ 600 cm−1), favorable chemica…
A new method to synthesize AgCoO 2 delafossite powder with AgNO 3 and LiCoO 2 by the cation exchange solid state reaction at an atmospheric press has been presented. The effect factors such as moral ratio Ag/Li, reaction time, reaction temperature on the production were discussed systematically and the optimized prepa…
The article describes a new method for nano-sized silicon powder fabrication. The method is based on monosilane thermal decomposition at the adiabatic compression. Homogeneous conditions of chemical transformation ensure a high product purity and monodispersity. Both amorphous and crystalline silicon powders were obta…