Materials Literature
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MnFe2O4 多晶的粉末被化学一起沉淀方法准备。反应温度什么时候在 80 ° C 上面，通过扔；洗，没有锻烧， MnFe2O4 能直接被获得。然而，当它在 80 ° C 下面时，我们不得不锻烧先锋以便获得 MnFe2O4，它不导致纯针的结构但是 MnFe2O4 的混合物；α - Fe2O3。粉末的磁性与一个颤动的样品磁强计被描绘。阶段结构，晶体大小；晶格常数被 X 光检查衍射计介绍。另外，粉末的形态学与一台扫描电子显微镜被观察；一台传播电子显微镜。
PVC 的热分解特征系统地用联合到四极质谱仪的 aNetzschne TG thermo 平衡被调查。热分解条件是 Ar， 10 ℃ / min 的加热的率和 1000 ℃的最后的温度的 0.1 MPa。thethermogravimetric 性质和气体的产品的同时的进化在热分解期间被学习。当热分解温度增加重量损失和 PVC 增加的重量损失率， TG/DTG 结果显示出那。在 412 ℃附近，重量损失率达到了它的山峰价值。Athigher 温度损失的率逐渐地减少。在 thermogravimetricanalysis 期间发展的气体被一个集体分光计分析，监视 HCl， C_6H_6，轻烃和包含氯的气体的相对紧张。进化曲线证明 H…
Three failure modes of penetration mechanisms,i.e.,Taylor impact,petal-cap failure of Sunflower alike and plugging perforation, of Fragment Simulation Projectiles(FSP),were observed in the experiments of A3 steel blunt projectiles impacting 45 steel plates.Numerical simulations with LS-DYNA was conducted to analyze th…
Although most rutile‐type difluorides (MnF2, CoF2 and NiF2) have a positive thermal expansion coefficient, FeF2 has a negative thermal expansion (NTE) along the c‐axis in the high temperature region. In this study, we give an explanation of that behavior with Extended X‐ray Absorption Fine Structure (EXAFS) and X‐ray…
This paper presents the synthesis of nano-composite Cu-Al2O3 powder by a thermochemical method and sintering, with a comparative analysis of the mechanical and electrical properties of the obtained solid samples. Nano-crystalline Cu-Al2O3 powders were produced by a thermochemical method through the following stages: s…
Nickel displacement deposition into porous silicon with pores of aspect ratio as high as has been experimentally studied. High degree of thickness uniformity of the plated nickel inside the pores has been achieved by controlling the plating bath chemistry and the reaction time. The deposited nickel displaces the Si th…
Abstract A continuous gas‐phase process under atmospheric pressure for tailoring Pd/SiO 2 catalyst particles is described and characterized. Emphasis is placed on controlling the size and number density of Pd nanodots on the surface of the carrier particle. In the first step, sub‐micrometer‐sized SiO 2 support particl…
Two new sandwich-type heteropolyoxometalates, Na(14)[Co(2)Bi(2)(beta-B-CoW(9)O(34))(2)].48H(2)O (1) and Na(14)[beta-B-Zn(2)Bi(2)(ZnW(9)O(34))(2)].51H(2)O (2), have been synthesized at pH = 7.5-8 and characterized by elemental analysis, IR, UV-vis, TG-DSC and electrochemistry. Structural analysis indicates that both po…
We succeeded in regulating the growth of diatom cells on chemically modified glass surfaces. Glass surfaces were functionalized with -CF3, -CH3, -COOH, and -NH2 groups using the technique of self-assembled monolayers (SAM), and diatom cells were subsequently cultured on these surfaces. When the samples were rinsed aft…
The dissolution of Ni(COD)2 (COD = 1,5-cyclooctadiene) into dichloromethane leads to decomposition and formation of a room temperature magnetic material, whereas the reaction of Ni(COD)2 and tetracyanoethylene (TCNE) in THF forms paramagnetic materials including NiII[C4(CN)8](THF)2·xTHF. These results are discussed in…
Electron probe microanalysis (EPMA) is a promising method for the evaluation of various kinds of material transport and phase changes. It can be used for the accurate estimation of the diffusion coefficient in concrete and for the verification of advanced models describing the material transport of various elements be…
In our program for developing chirality manipulation systems, we synthesized bis(zinc porphyrin) 1, with a dibenzodiaza-30-crown-10 as a linker unit. Two structural features were examined. The aza-crown segment exhibited an intermolecular interaction with the zinc(ii) of the porphyrin, capable of causing aggregation t…
The cohesive and elastic properties of the non-oxide perovskite type superconductor MgCNi3 are calculated using the full-potential linear muffin-tin orbital method with the local density approximation as well as the generalized gradient approximation for exchange and correlation. The calculated equation of state and g…
Effect of Dispersion of Nanosize Platinum Particles on Electrical Conduction Properties of Proton-Conducting Oxide SrZr0.9Y0.1O3 − α , Matsumoto, Hiroshige, Furya, Yoshihisa, Okada, Sachio, Tanji, Takayoshi, Ishihara, Tatsumi
The etching characteristics of Ge 2 Sb 2 Te 5 (GST) films were studied with a C H F 3 ∕ O 2 gas mixture using a reactive ion etching system. The variations of etch rates and etch profiles caused by changes in the gas-mixing ratio were investigated under constant pressure and applying power. Then the etching parameters…
The effect of the addition of Zr to CeO2 on the hydrogen reduction and subsequent water splitting re- actions is described with consideration of structural changes. For this purpose, CexZr1-xO2 was prepared by a co-precipitation method. The hydrogen reductions of CexZr1-x.O2 (x = 0.5, 0.6, 0.7, 0.8, 1.0) and the subse…
The paper presents a rigorous analytical approach to determine the field patterns in simple chirofibers having circular cross-section. Variations in core as well as cladding chiralities are considered to investigate the behavioral feature of the fields propagating in the structure. In particular, the results are compa…
[EN] In this review we will show that wide and small angle X-ray scattering techniques (WAXS and \nSAXS respectively) can be a valuable tool to characterize the structure of carbon nanotubes \n(CNT) and related CNT-polymer nanocomposites at different characteristic length scales. \nRanging from single carb…
The geometry, electronic structure and optical properties of pure and 3d transition metals-doped anatase-phase TiO2 were studied by using the plane-wave ultrasoft pseudopotential method based on the density functional theory. The calculations show that the formation of impurity energy level is mainly contributed by 3d…
Interfacial segregation of nanoparticles on droplets, such as water droplets in oil, is achieved by mixing or shaking organic solutions of the nanoparticles with water. This typically results in the formation of droplets with a large distribution of sizes, ranging from 10 microm to greater than 200 microm in diameter.…