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 An anticorrosion phosphate film with free of chromate, fluorides and nitrite, was successfully prepared on the surface of the magnesium alloy AZ31 via chemical deposition method. The effects of film-forming temperature and free acid on the corrosion resistance of the film were investigated through SEM. The an…
±Û ß
The reaction of the(1R,2R)-N,N′-Bis(2-pyridylmethylene)cyclohexane-1,2-diamine (BPID) ligand with 2 equivalents of GeCl 2 •(dioxane) produced an unexpected germanium salt (1) while the reaction with two equivalents of TeBr 4 resulted in a novel doubly-charged Te salt (2). These compounds represent the first main group…
In prominent funding and policy statements, a particle with at least one dimension in the 1-300 nm size range must have novel physicochemical properties to count as a “nanoparticle.” Size is thus only one factor. Novelty of a particle's properties is also essential to its “nano” classification. When particles in this…
A raw material with high cellulose content and low content of hemicelluloses, residual lignin, extractives and minerals is required for many important applications in the pharmaceutical, textile, food and paint industries i.e. cotton and dissolving grade pulp are used. However, the high costs for the production of dis…
The shape deformation of hydrothermal-grown ZnO nanorods is observed. After annealing at high temperature, hexagonal ZnO nanorods change to become cylinder-like ones. The adjacent nanorods tend to connect to each other to form one nanostructure. Photoluminescence measurements show that a sample annealed at 600°C has a…
An epitaxial BiFeO 3 /La 0.7 Sr 0.3 MnO 3 (BFO/LSMO) multiferroic heterostructure is grown on an LaAlO 3 (001) substrate by laser molecular beam epitaxy, and its photovoltaic properties are investigated. It is found that the photocurrent is significantly increased under illumination, and the short-circuit photocurrent…
The results of research into the preparation of silver nanoparticles using photoreduction in the presence of hydroquinone as the reductant were discussed. Substrates for the synthesis of silver nanoparticles were ultrafine crystalline gelatine-stabilised aqueous suspensions of silver bromide. The influence of the redu…
This article provides an overview of research selected from the 2011 scientific literature involving polymers with inorganic elements as part of their backbone.
The long-term stability of electrical resistance and magnetoresistance in nanostructured La1-xSrxMnO3 (x = 0.17) manganite thin films grown on lucalox (Al2O3 + MgO) substrate by the MOCVD method was investigated. It was found that the storage of up to 3 months of the free surfaces of these films in normal atmosphere (…
We fabricated infrared wire-grid polarizers consisting of a 500-nm pitch Al grating on a low toxic chalcogenide glass (Sb–Ge–Sn–S system) using the direct imprinting of subwavelength grating followed by a deposition of Al metal by thermal evaporation. To fabricate the subwavelength grating on a chalcogenide glass more…
Graphene thin films are grown on Si substrates covered by SiO2 layers (SiO2/Si) with the method of directly depositing carbon atoms in the molecular beam epitaxy (MBE) equipment. The structural properties of the samples produced at different substrate temperatures (500℃, 600℃, 900℃, 1100℃, 1200℃) are investigated by R…
The extinction spectra and the electric field distributions of the cross-shaped nanostructures are calculated by the discrete dipole approximation method. Compared with the individual nanorod, the cross-shape nanostructure can generate high local electric fields at the lateral surface. Because of the electric field co…
Plates of austenitic stainless steel are often used in orthopedic surgery for fixing ends of the broken bones and for repairing fractures. The paper analyzes a premature breakage of six plates for fixing broken bones with different patients during their recovery. Each plate's breakage can induce serious aftermaths suc…
茧，为到丝绸蛾的幼虫的开发的一个躲蔽处，包含含纤维的蛋白质丝心蛋白，它由球状的蛋白质丝胶是涂的。丝绸蛾的出现要求 cocoonase 的行动，朊酶由蛹藏匿了。全身的 prococoonase cDNA，与 780 bp 编码 260 氨基酸的开的读框架，被反向的抄写从 6-day-old 的头的全部的 RNA 克隆泰国丝绸的 Bombyx mori 蛹。缺乏编码顺序的 propeptide 的仅仅基因碎片成功地在 Pichia pastoris 被表示，产出细胞外地活跃的 cocoonase。recombinant cocoonase 被 80% 铵硫酸盐分别和 CM-Sepharose 层析净化到同质，并且它的内部肽序列被 na…
Porous Cu with macroscopically aligned channels was synthesized using a freeze-drying process.Camphene-based CuO slurry was prepared by milling at 60 °C with a small amount of dispersant.Freezing of a slurry was done at 25 °C while unidirectionally controlling the growth direction of the camphene.Pores were generated…
International audience
In order to study the properties of the carbon nanotube(CNT) cathode with intense pulsed emission, the outgassing property of cathode is investigated on the 2MeV linear induction accelerator(LIA) injector. Results show that the cathode has a capability of desorbing gases from the CNT cathode under pulsed high voltage.…
采用氧化还原法,通过控制还原时间制备了不同还原程度的石墨烯;用红外光谱、紫外光谱、拉曼光谱、X射线衍射、热重分析、电导率测量等多种手段系统研究了不同还原程度石墨烯的结构与性能;采用透射电子显微镜、扫描电子显微镜和原子力显微镜比较了氧化石墨烯和石墨烯的形貌.结果表明,随着还原程度的增加,石墨烯中含氧基团减少,紫外吸收峰逐渐红移,D带与G带的强度比增加,热稳定性和导电性提高.微观结构表征说明石墨烯比氧化石墨烯片的厚度增加,褶皱增多.
The susceptibility and resistance of type 304 austenitic stainless steel exposed to sulphuric acids (0.3M to 1M concentrations) at ambient temperatures and at higher temperatures were investigated. Weight loss method was used to examine the corrosion rate of the steel after immersion in the corrosive media. The Consta…