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In this paper, the JFO condition, satisfied with global mass continuity, is incorporated into an universal Reynolds equation with micro-polar fluid which is solved for the oil film pressure using OSM and FEM. The bearing load capacity and friction resistance were given, and stiffness/damping coefficients and critical rotor mass were obtained by solving a pressure perturbation equation with micro-polar lubricants.

本文采用满足全流场质量连续的JFO边界条件,采用微极性流体的广义雷诺方程来求解油膜压力分布,进而获得油膜承载力和粘性阻力等轴承动力特性量;采用小参数摄动法得出油膜压强扰动方程,并采用有限元法解出扰动压强,积分扰动压强获得油膜的阻尼系数和刚度系数,进而求得了表示轴承油膜稳定性的临界转子质量。

Methods: Expression levels of MMP10 gene and protein in human spontaneous abortion decidua were determined by RT-PCR, Western blotting and distribution by immunohistochemistry.

利用RT-PCR和Western blotting技术分别检测MMP10基因和蛋白在人正常蜕膜和自然流产蜕膜的表达水平、利用免疫组织化学技术检测MMP10在人正常蜕膜和自然流产蜕膜组织中的分布。

In which the microorganism fouling was the main reason why the RO system operated and run diffidently, such as a great deal of sticky biofilm were attached to the surface of RO membrane, and which led to a higher influent press, a lot of energy consumption and lower water production and so on.

分析认为,RO膜污染主要来自无机物、胶体、有机物和微生物污染,其中微生物污染是造成反渗透水处理运行困难的重要原因,它会造成反渗透膜表面出现大量粘泥状生物膜,使进水水压过高,增大能耗,或造成膜的产水量下降。

There is no obvious relation between temperature and semiconductor intrinsic properties. The passivation film represents the n-semiconductor characteristic in the potential interval of -0.5~0.1V, the p-semiconductor characteristic in the potential interval of 0.1~0.9V, and the n-semiconductor characteristic in the potential interval of

温度对于316L不锈钢钝化膜的半导体本征性质没有根本的影响:在-0.5~0.1V电位区间内钝化膜呈p型半导体特征;在0.1~0.9V电位区间内钝化膜呈n型半导体特征;在0.9~1.1V电位区间内钝化膜呈p型半导体特征。

This article mainly introduced the characteristic of water-soluble PVA carrier film,and including its application in water transfer printing,carrier of embroidery and periwig, medical film ,washing film and so on.

本文主要介绍了水溶性PVA载体膜的特性,以及水溶性PVA作为载体膜在水转印和纺织刺绣、药膜、洗手膜等上的应用,并对PVA载体膜作了展望。

Membrane affinity quantified by IAM and liposome/buffer systems was a more efficient predicator of α values than hydrophobicity from n-octanol/buffer system. Consequently, not only hydrophobic force but also attractive polar extra-interactions involved in the binding to IAM and liposomal membranes but not in an n-octanol phase, ascribed to the binding process within AM. The binding to ordered lipid membrane in the larger part determined drugs'binding to AM intracellular compositions, and the ordered phospholipid plasma membrane was a potential site for drugs'binding in AM.

脂质体/水系统和磷脂膜色谱所测定的膜亲和性比正辛醇/水系统的疏水性更好的预测巨噬细胞内药物的α值,因此包含在磷脂膜色谱中但并不体现在正辛醇/水系统中药物与磷脂膜之间的额外吸引性极性作用力对药物在细胞内结合有着重要贡献;药物与有序磷脂膜的结合在很大程度上决定着药物与巨噬细胞内成分的结合,有序磷脂分子膜可能是巨噬细胞内部潜在的结合部位。

Cu/Zr nano-multilayer films are prepared by Direct Current magnetron sputtering in the silex substrate, and the box-type furnace is used to anneal. Micro-sclerometer, X-ray Diffractometer and Scanning Probe Microscope are used to analyze the mechanical performance and microstructure of Cu/Zr nano-multilayer films. The relation of process parameters and performance is investigated.

本文利用直流磁控溅射方法在石英玻璃基片上制备了一系列自支撑Cu/Zr纳米多层膜,使用箱式电炉对多层膜进行退火处理,利用显微硬度计、X射线衍射仪、扫描探针显微镜表征了多层膜的力学性能与微观结构,研究了不同工艺参数对纳米多层膜性能的影响。

In order to enhance the anti-corrosive performance of ZK60 magnesium alloy,the chemical conversion coating s on ZK60 magnesium alloy obtained from phosphate or stannate solutions were studied.

结果表明:在磷酸盐溶液中,当处理温度为50℃时,磷化30min后试样的电荷转移电阻为224.03Ω·cm2;当温度为80℃,反应时间为45min时,所得转换膜的Rct为377.67Ω·cm2,阻值最大,耐腐蚀性能最好;对于锡酸盐化学转化膜,90℃下,处理60min的膜层耐蚀性能最好,其Rct为388.32Ω·cm2,与磷酸盐化学转化膜相比,两种膜的保护性能相差不大。

We use Poly vinyl alcohol, acrylic acid and acrylonitrile as the materials, through the aldolisation of PVA and copolymerization of AA and AN, we prepared the composite membrane with balance theory of hydrophilic and hydrophobic water.

本文以聚乙烯醇和丙烯酸、丙烯腈为主要原料,通过PVA缩醛中醛的选择及膜制备方法的选择,根据亲憎水平衡理论设计出PVA缩甲醛膜上下两层包覆AA和AN共聚膜的复合膜,用此膜进行甲醇/水溶液的渗透汽化分离。

Initially, assuming that the contact between cam and tappet is"dry contart", a dynamics model of Hertzin contact stiffness and impact damping is established. Next, with dynamic load on cam—tappet pair from the model, an analysis is made both to unsteady EHD oil film in cam—tappet pair under condition of full and partial lubrtication and to wear characteristics of cam profile. then, according to the fact that the lubrication in cam—tappet contact surface is EHD lubrication, taking the interaction between stiffness and damping of unsteady EHD oil film and rigidity of solid object contact into account, a dynamics equation of valve train relating to the dynamic effect of EHD oil film is built up and solved. Consequently, a further study is made on the dynamic characteristics of valve train under interaction of EHD oil film dynamic behavior and the problem of EHD lubrication in cam—tappet pair. Finally, the dynamic effect of full and partial EHD oil film is studied accordingly.

首先,通过对凸轮—挺杆接触为&干接触&的假设,建立了考虑赫兹&接触刚度&和冲击&阻尼&的配气机构动力学模型,用由此求得的凸轮—挺杆表面动载荷对凸轮—挺杆进行了全膜状态和部分膜状态非稳态弹流润滑分析,并研究了凸轮轮廓的磨损规律;然后,是在凸轮挺杆表面存在弹流动压油膜这一事实的基础上,相当于在动力学方程中考虑非稳态弹流油膜的&刚度&、&阻尼&和固体接触&刚度&的耦合作用,建立并求解了考虑弹流润滑行为动力学效应的配气机构的动力学方程,从而深入地研究了弹流润滑行为与动力学行为耦合作用下的配气机构动力学特征以及凸轮挺杆弹流润滑问题;作为前面工作的对应部分,考虑弹流油膜动力学效应的研究工作也同样分为全膜状态和部分膜状态进行。

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