分数

Worn surface morphology was examined with scanning electron microscopy, and wear volume was measured with a Talysurf 5P-120 topographer. Results show that CNTs, in mass concentration of 0.01%~0.1%, can greatly improve the antiwear ability of lubricating oil. With addition of CNTs, the maximum reduction of wear rate is about 57%, and scratches on the worn surfaces become slighter and more uniform. The maximum decrease of friction coefficient is about 15% with 0.025% CNTs additive at the load of 300 N. The antiwear mechanism has been discussed.

结果表明：碳纳米管作为润滑油添加剂表现出优良的抗磨性能，在质量分数仅为0.0125%～0.1000%时，润滑油的抗磨性能显著提高；在质量分数约为0.0500%时其抗磨效果最佳，磨损率降低幅值达57%；在较高载荷下，添加0.0250%的碳纳米管能够使其摩擦系数减小约15%，但随着碳纳米管质量分数的增加，摩擦系数迅速提高；含碳纳米管润滑油的磨斑表面平整，划痕较细且分布均匀。

The results showed that the tensile strength and elongation at break of the objective silicone rubber increased with the increase of vinyl content in PDM-MVS. The tensile strength was 3.9 MPa and elongation at break was 416%, and the reinforcement effect of PS on silicone rubber was significant when the mass fraction of vinyl was 1.50%. The objective silicone rubber had microphase-separated structure consisting of PS domains uniformly dispersed within a continuous PDM-MVS matrix. The compatibility between the two phases increased with the increase of vinyl content in PDM-MVS.

结果表明，目标硅橡胶的拉伸强度和扯断伸长率均随PDM-MVS中乙烯基质量分数的增加而增大，当乙烯基质量分数为1.50%时，其拉伸强度达3.9 MPa，扯断伸长率达416%，PS的增强效果明显；目标硅橡胶具有微相分离结构，PS作为分散相均匀分布于PDM-MVS连续相中，两相的相容性随着PDM-MVS中乙烯基质量分数的增加而增强。

The results show that the turbulence intensity, fouling cleaning intensity and pressure drop increase with the increase of flow velocity, particle size and the volume fraction. The effect of liquid-solid fluidzed-bed cleaning fouling depends on the reasonable combination of flow velocity, particle size and the volume fraction. Through an integral consideration of water saving and energy saving and uniformity of fouling cleaning, the optimum flow velocity of flow, particle size and volume fraction are 2.0 m/s~2.5 m/s, 3 mm~4 mm and of 5%~8 vol%, respectively.

结果表明：流体的湍流强度、壁面污垢清洗强度和压力降均随流速、颗粒粒径和体积分数的增加而增加；液固流态化清洗防垢除垢效果取决于流速、液固颗粒粒径和体积分数的合理组合；综合考虑节水节能及污垢清洗的均匀性，高炉冷却壁的最佳流速为2.0~2.5 m/s，固相颗粒粒径为3~4 mm，体积分数为5%~8%。

Eight Alnus cremastogyne clones, which simulated with different concentration of sodium chloride, were measured with four physiological indexes, including SOD activity, MDA content, chlorophyll content and soluble proteins content.

以不同质量分数的盐胁迫对桤木Alnus cremastogyne 8个无性系，在盆栽条件下测定叶片中丙二醛质量摩尔浓度、超氧化物歧化酶活性、可溶性蛋白质量分数和叶绿素质量分数的变化。

Methods; Rat HSCs were treated with 0.4% fetal calf serum/DMEM for 48 hours and divided into the control group and experiment groups. HSCs in the control group were treated with 10% FCS, and HSCs in the experiment groups were treated with 10% FCS and low anticoagulative activity heparin with different concentrations (8 g/L, 40 g/L, 200 g/L, 1000 g/L, 5000 g/L). MTT reduction assay was used to evaluate the effect of low anticoagulative activity heparin on the growth of rat HSCs.

肝星状细胞经体积分数为0.4%胎牛血清／DMEM培养液同步化48h后分为对照组和实验组，对照组以体积分数为10%胎牛血清处理，实验组分别以体积分数为10%胎牛血清和不同质量浓度(8 g/L， 40 g/L， 200 g/L， 1000 g/L， 5000 g/L)低抗凝肝素处理，应用MTT法测定其对肝星状细胞生长的影响。

The contents of protein and chlorophyll of Hydrilla verticillata. L is lower, but those of Myriophyllum spicatum L and Ceratophyllum demersum L raised steadily in the same condition, which indicated that those two submerged macrophytes have the stronger tolerance for nutrition than Hydrilla verticillata L.

通过对3种沉水植物可溶性蛋白和叶绿素质量分数的分析发现，黑藻在中富两种营养水平下，质量分数较低且波动平稳，金鱼藻和狐尾藻可溶性蛋白和叶绿素质量分数持续升高，表明这两种沉水植物对水体中营养盐的耐受能力较黑藻强。

In fact, the multiplicity is caused by the reason that there are a lot of techniques to fractionalize the eigenvalues of Fourier transform in the procedure of constructing the fractional Fourier transform.

实际上，分数傅立叶变换的多样性主要是由傅立叶变换的特征值在构造分数傅立叶变换时可采取不同的分数化方法所决定的。

Methods: Foty healthy New Zealand white rabbits were randomly divided into four groops. Control groop was fed with normal diet for 10 weeks, model groop was fed with 1.5% cholesterol diet plus normal diet; APS groop was fed with 1.5% cholesterol plus 12.0mg/kg APS plus normal diet; Captopril groop was fed with 1.5% cholesterol plus 15.0mg/kg Captopril plus normal diet. After ten weeks' experiment, the concentration of each group's Triglyceride, Total Cholesterol, High Density Lipoprotein Cholesterol, C Reactive Protein, Nitric Oxide, Maleic Dialdehyde and Endothelin-1 were measured, so was the activity of superoxide dismutase.

将40只雄性新西兰兔随机分为4组，每组10只，对照组餵普通饲料；模型组：普通饲料加质量分数为1.5%的胆固醇餵养；黄芪多糖组：普通饲料加质量分数为1.5%的胆固醇餵养，同时腹腔注射APS(12.0mg/kg)；卡托普利组：普通饲料加质量分数为1.5%的胆固醇餵养，同时灌喂卡托普利(15.0mg/kg)；10周后，测定各组空腹血清或血浆三脂酰甘油、总胆固醇、高密度脂蛋白胆固醇、一氧化氮、内皮素-1(ET-1)、丙二醛、C反应蛋白含量以及超氧化物歧化酶活性，并计算主动脉内膜粥样斑块面积。

Rentrop grade was significantly related to PDCF, but a wide range of PDCF was observed in patients with Rentrop grade≤1. PDCF can predict left ventricular recovery after successful PCI, and evaluate the collateral flow mensurably with AMI.

Rentrop分级与压力源性的冠状动脉侧支血流分数呈正相关性，该冠状动脉侧支血流分数同30d后左室射血分数呈正相关性。

The suitable reaction parameters were found that mole ratio of potassium persulphate to sodium sulfite,mole percent of initiator and mole percent of BS relative to total monomer, mass percent of total monomer in water, mass percent of surfactant in water, reaction temperature,pH value and reaction time are 3:1,0.06%, 1.45%,20%,5.5%,50 ℃,6 - 7 and 12 h, respectively.

研究得到了适宜的反应条件：n（K2S2O8）：n（Na，SO3）=3：1，引发剂和Bs相对于单体总量的摩尔分数分别为0.06％和1.45％，总单体在水里的质量分数为20％，SDS在水里的质量分数为5.5％，pH=6—7，反应温度50℃。

The concept of equivalent rotationally rigidity is offered and the formula of rotationally rigidity is obtained.

主要做了如下几个方面的工作：对伸臂位于顶部的单层框架—筒体模型进行分析，提出了等效转动约束的概念和转动约束刚度的表达式。

Male cats normally do not need aftercare with the exception of the night after the anesthetic.

男猫通常不需要善后除了晚上的麻醉。