Materials Literature
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The production of aluminium sheet is expensive and energy intensive despite the reduced environmental impact during use. Twin roll casting is a method of directly producing aluminium alloys in near net shape directly to sheet at a fraction of the energy costs of conventional DC casting / hot rolling. It also requires…
Hybrid films composed of chitosan and Keplerate-type polyoxometalate, {Mo72Fe30} (Mo72 VI Fe30 III O252- L102 ca.180H2O, L H2O/CH3COO /Mo2O8/9 n- ), were fabricated on quartz, silicon, and ITO substrates by layer-by-layer (LbL) method. The LbL films were characterized by UV vis spectroscopy, X-ray photoelectron spectros…
In this work the nuclear-physics methods of analysis of the content of a matter based on the using of proton \ninduced characteristic X-ray emission of the atoms and momentum γ-ray emission from nuclear reaction was applied \nto determine the gaseous impurities N, O, F and elements B, Ca, Ti, V, Cr, Fe, Ni, Cu, Nb, Mo…
The catalytic fluorination of hydrocarbons facilitates the large-scale production of chlorofluorocarbons for a wide range of applications including aerosol propellants, refrigerants and solvents. Lewis acid catalysts, such as Swarts catalysts based on antimony pentafluoride, are commonly used. Recently, a sol-gel base…
The multiple engineered barriers ensuring the safety of low-and intermediate-level waste repositories are required to be serviceable for at least 500 years after the facilities are sealed.The engineered barriers mainly consist of concrete structures and this requires the design work and justification to be based on kn…
Li1+x(Ni1/2Mn1/2)1-xO2 was prepared by co-precipitation and calcination technique. The compounds had a layered rock-salt structure with R3m symmetry, and the degree of non-stoichiometry x was an important factor for the structural and magnetic properties. The degree of cationic ordering was improved with an increase i…
World-class, fully automated manufacturing processes rely more and more on advanced, environmentally friendly surface treatment technologies. An innovative atmospheric pressure plasma technique (Fig.1) allows inline rubber and plastic manufacturing processes to become fully automated with total process control. A thor…
Thermosensitive liposomes are capable to capture the drug and release it into the medium when heated up to 40 - 43 C. The purpose of present work was preparation thermosensitive liposomes loaded with doxorubicin, their standardization and assessment of biological activity in vitro and in vivo. Thermosensitive liposome…
2006-2007两年的5-10月期间,分别在黑龙江黑河段水域进行藻类植物的生态调查,在藻类分类的基础上,应用典型对应分析揭示黑龙江黑河江段6个监测点藻类植物的种群结构与环境因子之间的关系.生化需氧量、总磷、水温和化学需氧量等是影响藻类植物群落分布的主要因素,藻类植物的群落结构随着这些环境因子的变化表现出一定的空间差异,说明藻类植物的群落变化和空间分布与环境因子高度相关.;The algal community was studied in Heihe channel in Heilongjiang River during May to October of 2006-2007, accordingto the taxon an…
At the sea coast or in the marine environment,the chloride erosion is the main factor causing reinforcement corrosion of tunnel lining.First,according to the basic principles of electrochemical method for the acceleration of reinforcement corrosion,and taking the Shanghai Yangtze River Tunnel as research background,an…
La2(Zr0.7Ce0.3)2O7(LZ7C3) as a candidate material for thermal barrier coatings(TBCs) was coated by electron beam-physical vapor deposition(EB-PVD).The composition,crystal structure,surface and cross-sectional morphologies and isothermal oxidation behavior of the LZ7C3 coating were studied.The results indicate that the…
As a big branch of textile chemical finishing,easy care (anti-crease) finish had more than 80 years history. The crosslinking distribution of easy care finish in the cotton fabric was analyzed. The developing process of easy care (anti-crease) finish was summarized,including the shrink proof and crease-resist finish,a…
Three ladderlike polyphenyl/methyl silsesquioxane resins(1～3) were synthesized from methyltrichlorosilicane and phenyltrichlorosilicane with different ratios of 1 ∶1,2 ∶1 and 3 ∶1,respectively. The structures were characterized by UV and IR. The thermal decomposition temperatures of 1～3 are 470 ℃,517 ℃ and 540 ℃,respe…
Compared with traditional IEC method,the wide bandwidth pulse current method could get more information about partial discharge,which will be helpful to improve the sensitivity as well as the ability of anti-interference.This paper study the pulse quantitative determination technology used by partial discharge detecti…
211 baby sheep suffered from copper deficiency disease(dead of the illness totalled 70) were well cured by administrate CuSO_4 solution orally in a sheep farm around wulumuqi in the spring of 2009. According to trace element assay of the grass collected in the grazing land,which contained copper between 15～41mgCu/kg.d…
The dynamic tensile fracture of cylindrical OFHC copper subjected to converging waves induced by sliding detonation was experimentally investigated.The inner surface(or free-surface) velocity profiles were measured by the displacement interferometer system for any reflector(DISAR).Analysis to velocity profiles gives s…
The changes of open circuit voltage(OCV) and performance of sintered Ni/MH battery were studied by force over discharge and 0.5 Ω short circuit.The capacity of battery decreased after force over discharge and could recover after 3 cycles.0.5 Ω short-circuit discharge to 0 V almost had no effect to the capacity,but the…
The surface reaction mechanism of atomic layer deposited(ALD) Ta2O5 on silicon surfaces was studied via density functional theory.The ALD process is designed into two sequential half-reactions,i.e.,TaCl5 and H2O half-reactions.Both of them proceed through an analogous trapping-mediated mechanism.By comparing with the…
The corrosion performance and the effect of temperature on the corrosion behavior of carbon steel were studied by analyzing corrosion rate,surface morphology and corrosion products.The corrosion rate of carbon steel increased with increasing temperature.During the corrosion period of 456 h in pollution-free atmosphere…
Non-isothermal and isothermal decompositions of LiBF4 were studied via TG-DTG method.Both the apparent activation energy Ea and the reaction order n got from both ways had good coherence.Furthermore, when the preexponential factor A got from isothermal decomposition was used to calculate the molecular radius by means…