Materials Literature
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To further investigate the fusion neutron source based on a gas dynamic trap(GDT),characteristics of the GDT were,analyzed and physics analyses were made for a fusion neutron source based on the GDT concept.The prior design of a GDT-based fusion neutron source was optimized based on a refreshed understanding of GDT op…
TiO2 nanocrystals/graphene hybrids（TiO2-G） with ultrafine TiO2 nanocrystals（7 nm in size） conformally coated on ultrathin graphene nanosheets（ 2 layers thick） were successfully prepared via a facile one-pot solvothermal route under mediated conditions.With the feature of large surface area,abundant mesopores and high…
, 强烈影响高原阶段被观察，出现明显的 strain-rate-hardening 特征。紧张率也影响了 densification 起始的紧张。以高紧张率的起始的紧张是的 densification 不到那以低紧张率。冲击波引起的可见不同类的变丑都没在莲花类型被观察多孔的铜在 high-strain-rate 期间变丑。以高紧张率，然而，毛孔墙的弯曲变丑特征显然以低紧张率不同于那些，它是高原压力由展出了紧张率敏感的主要机制当紧张率超过了某个价值并且展出了更少的 densification 时以高紧张率的起始的紧张。
Mediated by visible light-induced photoredox catalysis and free of other catalysts,a new and efficient synthesis of methylene-bridged bis-l,3-dicarbonyl derivatives has been developed.A variety of N-methyl tertiaryamines and 1,3-dicarbonyl compounds were investigated in this reaction.
The tribological behaviors of ultra-high molecular weight polyethylene (UHMWPE) microparticle- modified high-strength glass fabric/phenolic laminate composites sliding against stainless steel under water lubrication have been investigated. Results showed that the incorporation of UHMWPE microparticles, especially at t…
Low alloy CrMo steels are widely used for high temperature applications in the power and petrochemical industries as structural materials. The most crucial mechanical properties for these steels are sufficient strength to withstand internal pressure and high impact toughness to assure safety from momentary shock owing…
In this work,uniform reduced graphene oxide(RGO) films were formed on poly-(ethylene terephthalate)(PET) substrates using a simple drop-casting method.We investigated four types of substrates:unmodified PET,polydopamine-coated PET.carboxyl-group-modified PET,and alkyl-group-modified PET.Upon water evaporation,the surf…
The behaviors of electrical resistivity vs temperature(ρ-T) of the molten p-type thermoelectric alloy Bi0.3Sb1.7Te3(at.%) were explored in heating and cooling processes. An obvious hump appeared on the ρ-T curve from 932 ℃ to 1,020 ℃ at the heating process, while the curve became smooth in the following cooling, which…
Aptamers are a class of oligonucleotides that can specifically bind to targeted molecules, such as proteins, ions, small compounds, and cell surface receptors. Their specificity and affinity properties are equal to those of antibodies and can be sometimes be stronger. Aptamers exhibit low immunogenicity and good stabi…
当牺牲的模板和钠硅酸盐作为硅石先锋搽粉，空硅石 microspheres (HSMS ) 成功地用 d 葡萄糖经由一条灵巧的热水的线路被制作了。产生硅石空粒子被扫描电子描绘显微镜学(SEM ) ，传播电子显微镜学(TEM ) ， X 光检查衍射(XRD ) ，和红外线的光谱学(红外) 。表面区域用 BET 方法被决定。SEM 和 TEM 图象展出了微尺寸的硅石有 1.5 m 的一种尺寸的空粒子。
在象规定领域和控制效率因素那样的冷滚动、新参数瞄准工作转动的热王冠的精确性控制被建议，工作转动的热王冠的一个数字分析模型用有限差别方法被建立学习转动热变丑。基于模拟结果，热王冠上的控制效率因素的影响被介绍，工作转动的热王冠在订喷洒横梁进考虑使过冷以后被分析。转动表面上的任何位置的控制效率因素是温度的线性功能，水温度的控制能力比另外的控制参数强壮，这被发现了。另外，模型的确认在一些工厂和结果与试验性的数据与一致很好的数字模拟里基于生产技术数据被执行了。因此，这个工作在冷滚动为转动王冠的联机控制有重要价值。
修改的铜(PTCOxNMC ) 电极由 electropolymerization 准备了的 polytyramine 铜盐 nanocomposite 用周期的 voltammetry 和阻抗光谱学在碱的答案向甲醇的氧化为 electrocatalytic 活动被检验。准备 PTCOxNMC 电极为吸附的甲醇氧化显示出显著地高的回答。象在 PTCOxNMC 电极的表面的 electrocatalytic 氧化上的潜在的扫描率和甲醇集中那样的各种各样的参数的效果被调查。象 Fourier 那样的 Spectrometry 技术转变红外线的光谱学和扫描电子显微镜学被用来决定表面修改电极的物理特征并且表明 polytyramine 铜…
A new 3D polymers based on a tripodal flexible carboxylate H3TCOPM and [Zn6(μ6-O)] cluster, {[Zn6(μ6-O)(TCOP M)2]·5H2O·4NO3· DMF}n, was hydrothermally synthesized and characterized by single crystal X-ray diffraction, infrared spectroscopy, thermogravimetric analysis, and powder X-ray diffraction, respectively. The st…
Chromium acetylacetonate and bis(diphenylphosphino)isopropylamine were coordinated in situ and supported on methylaluminoxane-modified silica. The catalyst structure and effects of reaction temperature, reaction pressure and Al/Cr molar ratio on ethylene tetramerization were investigated in detail. Chromium was unifor…
Ni-B-MoS2alloy was deposited on the surface of mold steels by electroless plating technique, then the surface morphology, phase constituent and composition of the coating were characterized by SEM, XRD, EDS. In the meanwhile, its hardness, thickness, adhesion, porosity, wear resistance, corrosion resistance and viscos…
Extensive studies of low-dimensional carbon nanomaterials have attracted tremendens attention to the allotropes of other elements.Boron nitride nanomaterials are structurally analogous to carbon nanomaterials,but possess quite different properties.Unlike metallic or semiconducting carbon nanotubes(CNTs),the boron nitr…
几先进高张力钢(DP590， DP780， DP980， M1180，和 M1300 ) 的破裂形态学在单轴的紧张形成了，穿透被扫描处理技术的图象分析的电子显微镜，然后份量上观察。导致紧张的 fractographs 被明显的制服或 bimodal 尺寸酒窝统治，当时砍导致 fractographs 有光滑的表面和很少酒窝。更高的等级 DP 钢的破裂地区更光滑。至于 M1180 和 M1300，破裂地区由很小的酒窝和光滑的易碎的表面组成。M1300 的酒窝尺寸(~ 1.2 m ) 比 M1180 的小(~ 1.6 m ) 。而且在张力的破裂，在平均酒窝直径(d) 和张力的力量之间的量的关联() 能被 d = 代表 10,502.3…
Due to the unique optical,electronic,magnetic and catalytic properties,functional nanomaterials provide new opportunities for the rapid development in a variety of disciplines and show considerable promise in different fields.Specifically,constructions of the novel electrochemical interface using various nanomaterials…
1 Introduction There exist calcium and sulfate ions outside sodium chloride in solution mining for calcium sulfate brine.The calcium and sulfate ions not only affect the purity of the vacuum salt products,but also increase the scaling of vacuum evaporation tanks and brine reusing pipes.Additives have certain impacts o…
Objective:The anti-inflammatory effects of Ecklonia cava(EC)and its mechanism of action were examined in phorbol-12 myristate 13-acetate(30 nmol/L)and A23187(1μmol/L)(PMACI)stimulated human mast cell line-1 cells.Methods:Nitric oxide content,inducible nitric oxide synthase and cyclooxygenase-2 protein expression,pro-i…