Materials Literature
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The influence of annealing treatment of molybdenum (Mo) film on the growth of CuInSe2 (CIS) thin film has been studied. We show that Mo film is with much better electrical conductivity and adhesion after being annealed in vacuum. It is found that annealing of Mo film not only modifies the orientation of In2Se3 (IS) pr…
Figure 3. Non-interacting phase diagram for α = 1/6 and α = 1/10 at half-filling EF = 0 as a function of γ and λx. The QSH effect phase appears symmetrically around maximally spin-mixing γ = 0.25. For our finite size calculations, we identify the metallic regions when the 'gap' size is smaller than the level spacing.…
Ya. M. Grigorenko and A. Ya. Grigorenko Studies on the static and dynamic deformation of isotropic and anisotropic elastic shell-like bodies of complex shape performed using classical and refined problem statements are reviewed. To solve two-dimensional boundary-value problems and eigenvalue problems, use is made of a…
High heat flux tests with central heat flux of 10.5 MW/m 2 using helium neutral beams have been carried out on rolled tungsten.The energy of helium particles is 33 keV and the particle flux is 2×10 21 m -2 s -1 .An 80×65×3 mm 3 rolled tungsten plate is firstly exposed to a 4.6 s pulse resulting in partially molten sur…
Magnesium (Mg) or its alloys have shown great potential as promising biocorrosive or biodegradable implantation materials and/or internal fixators, owing to their good biocompatibility and osteoinductive potential. However, poor anticorrosion property or rapid biodegradation has limited their clinical applications whe…
Recently, the attentions of many researchers were focused on PLA and functional \nalternating copolymers based nanocomposites. PLA is of significant interest in \nbioengineering applications such as wound closure, tissue culture and controlled \nrelease. Preparation of PLA/clay nanocomposites by using solution blendin…
Figure 5. Intensity plot of the single-particle spectral function A(k_y,\omega ) = \int _{k_x} A(k_x, k_y, \omega ) as a function of ω and ky for α = 1/6, λx = 1.5, γ = 0.25 and different interaction strengths U. Left panel is for U = 0.5, where the system is in the normal insulating phase, (middle) is for U = 1.0 whe…
Molecular chain heterogeneity of the copolymer of L-lactide and epsilon-caprolactone (PLC) was investigated using the preparative temperature rising elution fractionation (TREF) technique and successive self-nucleation/annealing (SSA) thermal fractionation. Two PLC samples with epsilon-caprolactone compositions of 5 m…
High temperature and high pressure immersion tests in an autoclave were employed to study the corrosion behaviour of X52 pipeline steel in aqueous solutions containing high concentrations of H2S. The corrosion products generated were characterised using scanning electron microscope, energy dispersive spectroscopy and…
In designing solid-pole synchronous machines, it is important to take into account the surface eddy-current losses in the field pole cores. In this study, a solid-iron ring specimen is adopted as an approximate model of solid pole surfaces in order to conduct a fundamental study of the surface losses. The influence of…
利用紫外-可见吸收光谱和荧光光谱法,在Tris-HCl缓冲溶液中考查了不同温度下镝（Dy）-L-苯丙氨酸-5-氟尿嘧啶三元配合物与牛血清白蛋白（BSA）之间的相互作用。实验表明,配合物对BSA的内源荧光猝灭为静态猝灭过程,并测定该反应在不同温度下的结合常数KA,且配合物与BSA以物质的量比1∶1结合。根据计算出的热力学参数表明,配合物和BSA之间的作用力主要是静电作用。用同步荧光技术考察了配合物对BSA构象的影响,结合位点接近于酪氨酸残基。
Catalysts prepared by the original aerosol method have shown remarkable catalytic activity at relatively low reaction temperature. The decisive features for high activity in olefin metathesis under studied conditions are (i) good textural properties, (ii) strong interaction between the carrier and the WOx species. The…
Objective: The review is to summarize the different preparation methods of nano calcium carbonate as well as the comparison of the advantages and disadvantages of the methods and the characteristics of drug control-released carrier system based on nanometer calcium carbonate, and then to discuss its prospect in the fi…
对2008版《石墨化学分析方法》标准与1995版进行了比较,分析了新版标准在技术要求与指标上的变化。同时结合工作实践,对标准中关于挥发分、灰分及硫含量的测试要求提出了自己的一些见解,希望引起同行的关注。建议：①进行挥发分测试时,将装载试样的敞口石英舟改为带盖的石英坩埚;②进行高纯石墨试样灰分测试时可通过适当加大称样量的方式来提高测试结果的精确度和可靠性。同时,按样品灰分的不同对灰分平行测定结果的绝对误差允许值范围进行细化;③进行硫含量测试时,将炉温升至1 400～1 450℃,根据样品中硫含量范围选择不同浓度的碘酸钾标准溶液,测高、低硫样品的燃烧管分别使用。同时,按样品硫含量的不同对硫含量平行测定结果的绝对误差允许值范围进行细化。
Two-dimensional strong cation exchangepositively charged reversed-phase liquid chromatography for alkaloid analysis and purification
The so called spark plasma sintering (SPS) is a relatively new hot consolidation technology that is getting rapidly growing attention for the academic research and industrial development. Although there is no evidence of plasma existence yet, substantial experiment trials have been done and often delivered superior ma…
目的3-（4，5-二甲基噻唑-2）-2，5-二苯基四氮唑溴盐（MTT）法体外评价CPTi和Ti-6A1—4V牙科种植体材料对人脐静脉血管内皮细胞（HU）增殖的影响，并检测这两种材料在细胞培养液中的腐蚀情况。方法将HU（2×104／mL）接种于CPTi和Ti-6A1—4V金属表面，电镜观察细胞接种初期的形态，MTT法检测细胞接种后4h、1d、2d、3d、7d、10d和14d所测的OD值，X射线光电子能谱分析（XPS）法分析2种金属在细胞培养液浸泡前后的表面层组元。结果采用SPSS13．0软件分析，细胞接种后4h、1d、2d、3d、7d、10d和14d所测的OD值表明2种材料没有统计学差异（P〈0．05）；接种后6h电镜下可以观察到细…
In this contribution, I would like to present the different use and development in atomic force microscopy (AFM) focusing primarily in the fields of life sciences and soft matter. In particular, we will see in which way the AFM is used as an imaging machine to characterize macromolecules at different interfaces or to…
以氯化铜、邻菲罗啉和2-羟基膦酰基乙酸为原料，采用水热法-锅合成了Cu（Ⅰ）和Cu（Ⅱ）两个配合物，即[（CuCl）：（phen）]。（phen，邻菲罗啉）和[Cu（OX）（phen）]。（OX，草酸根），并通过红外光谱、X-射线单晶衍射进行表征。X-射线单晶衍射分析表明[（CuCl）：（phen）]。和[Cu（Ox）（phen）]。均为-维链状结构，其中[（CuCl）：（phen）]。中的Cu（Ⅰ）和[Ca（OX）（phen）]。中的配体草酸根通过氧化还原反应“原位”产生。
Palm oil mill effluent (POME) is the largest pollutant discharged into the rivers of Malaysia. An efficient treatment system is highly desirable in palm oil mills in order to control the effluent discharged to any water bodies. In this study, composite ultrafiltration (UF) membranes were successufully prepared by inco…