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。
In an organic solvent, organic heterocyclic compound, 1,4-bis(pyrazole-l-ylmethyl)benzene (bpx) reacted with Cd(NO3)2, Cd(ClO4)2, CdBr2, Zn(NO3)2 and Zn(ClO4)2 produced ten coordination compounds: {[Zn(bpx)1.5(CH3CN)](ClO4)2}n (1a) {[Zn(bpx)2](ClO4)2(PhCN)2}n (1b) {[Zn(bpx)(Me2CHCN)2(H2O) 2](ClO4)2}n (1c) {[Cd(bpx)1.5…
The increasing interest in esthetics and the subsequent need to solve related problems such as dentin hypersensitivity and root caries have favored the development of many surgical techniques that penvit the coverage of exposed roots. A variety of surgical techniques have been used to cover recession type defects. In…
Asymmetric Synthesis of (–)-Shikimic Acid The synthesis commenced with commercially available cheap L-tartaric acid or its derivative dimethyl 2,3-O-isopropylidenetartrate. Exposure of the tartarate with DIBAL-H followed by a highly diastereoselective divinyl zinc addition to the in situ generated dialdehyde, afforded…
The effects of bainitic treatment on microstructure and mechanical properties of 0.10C-1.5Mn-l.5Al TRIP-aided cold-rolled steels have been investigated.The samples were heated by intercritical annealing at 820℃for 2 min and quenched in banitic temperature with different hoding time for 5 to 300s,two salt bath were use…
Conditioned by the compressed air, which is cooled in the vortex conditioner, makes it possible to work long time at an ambient temperature to y 80 aC . The conditioners with the compound circuit of the organization of the cooling process are used at a higher temperature for cooling air. There is a clothing, with uses…
Formulation of the Casimir effect using multi-scale nonequilibrium molecular dynamics (MS-NEMD) is addressed in this paper. Except in the case of parallel plates, simulation of the Casimir effect is a challenging task. MS-NEMD may offer a suitable approach in estimating the Casimir effect for complicated geometries an…
We present the study of electromagnetic radiation by particles of ferroelectric placed in the adhesive layer products made of composite materials whose emission was stimulated by acoustic waves and pre-orientation of the particles. The orientation of the particles was carried out in such a way that the total dipole mo…
采用光纤耦合输出激光二极管(FCLD)单端端面抽运Nd:GdVO4晶体的方式,获得高功率单频激光的输出。在实验中,采用四镜折叠环形腔,考虑了晶体的热透镜效应后,优化了环行腔腔型。通过在腔内插入法拉第旋光器和半波片实现激光的单向运转从而抑制空间烧孔效应,在腔内插入标准具后,压缩了单频激光的线宽,获得了连续单频1063 nm激光输出。在18.10 W抽运功率时,获得了7.57 W的单频激光,光-光转换效率为41.8%,光束质量因子M2≈1.2。
The possibility of using small-sized fission chambers for determining spatial position in central experimental channel of pulse uranium-graphite reactor of finite bodies made of materials absorbing neutrons has been studied. The results of the experiments on measuring neutron field characteristics in central experimen…
采用等温溶解平衡法研究了三元体系K2B4O7-KBr-H2O在323 K的相平衡关系及密度。研究发现,该三元体系为简单共饱和型,无复盐及固溶体形成。根据溶解度数据绘制了相图,相图中有一个共饱点,两条单变曲线,单变量曲线所对应的平衡固相分别为K2B4O7.4H2O和KBr;实验结果表明KBr对K2B4O7有较强的盐析作用。并简要讨论了密度变化规律。
Method of calculating the characteristics of airfoil cascade is obtained. This method is taking into account the regularities of the theoretical pressure coefficient variations, also the regularities of flow deflection angle in the lattice, the relationships of approaching and exiting angles of the flow from lattice g…
Este trabalho teve como objetivo desenvolver uma metodologia para a produção de biossensores amperométricos enzimáticos a partir da imobilização da enzima em polímeros condutores. Para isto, tiras testes constituídas por três eletrodos foram produzidas a partir da técnica de silk-screen utilizando pastas condutoras de…
It is believed that there is a connection between quality factor and ordering of B cations in A(B’1/3B’’2/3)O3. perovskites. Nevertheless, there are only few kinetic studies in ordering behavior. In this research, ordering behavior of Ba(Mg(1-x)/3Cox/3Nb2/3)O3 was studied by annealing and quench at high temperature. I…
在多壁碳纳米管（MWCNTs）表面上修饰壳聚糖,然后以其为模板,以NaOH为沉淀剂,FeCl3.6H2O和CoCl2.6H2O为铁源和钴源,采用水热法在MWCNTs上修饰CoFe2O4纳米粒子。用X-射线粉末衍射、场发射透射电镜、红外吸收光谱以及超导量子干涉磁强计研究了所制备的多壁碳纳米管/壳聚糖/CoFe2O4复合材料的组成、形貌以及磁性,并探讨了反应温度以及FeCl3.6H2O和CoCl2.6H2O浓度对产物的影响。
较详细地研究了V2O5-B2O3-TeO2三元体系的熔化温度、冷却熔体的相组成及玻璃形成规律；并测试分析了V2O5-B2O3-TeO2三元体系玻璃的热性能和特征温度。结果表明，V2O5-B2O3-TeO2三元体系具有较低的熔化温度，存在3个不同的结晶区域和一个较广阔的玻璃形成区，其玻璃形成区域为：V2O5 0％～70％、B2O3 0％～30％、TeO2 30％～100％（均为摩尔分数）；V2O5-B2O3-TeO2系玻璃具有较低的熔化温度和封接温度，是无铅低温封接玻璃的理想体系之一。
Two sets of Thermogravimetric Analysis (TGA) studies of the pyrolytic degradation of plastics were carried out in a non-isothermal manner. Both investigations were conducted at temperature ranging from 303K to 1173K in a nitrogen atmosphere. The first study assessed the thermal characteristics of pure polystyrene (PS)…
This study is conducted in an effort to better understand and improve the performance of thermoelectric heat recovery systems for automotive use. For this purpose an experimental investigation of thermoelectrics in contact with clean and fouled heat exchangers of different materials is performed. The thermoelectric de…
This thesis presents the investigation of magnetism in a selection of low-dimensional systems and its relation to other physical properties, such as superconductivity. The techniques employed are muon spin rotation and pulsed magnetic field magnetisation. The ability of muons to directly probe the local field is used…
The method of creation of acceptable norms for the runway roughness characteristics is described. This method takes into account the influence of runway roughness characteristics to transport plane resource and vibration comfort of the crew and passengers. The results of application of this method are given. Norms, cr…
Features of two-stage cooling of products in the apparatus of intensive cooling, the mathematical description of the process, an analysis of factors determining the intensification of the process, the link attenuation coefficient with the intensity of cooling have been considered.