变体

For raising the calculating efficieney of multibody system dynamic equation, especially moving elastic body, a method for solving nonlinear dynamic equation is presented by combining direct integration and Neumann series.

为了提高多体系统动力学方程，特别是运动弹性体的动力学方程的求解效率，提出了求解非线性的或时变的动力学方程的Neumann级数一直接积分解法。算例表明了该方法的正确性和有效性。

However,it was non-Newtonian fluid at higher shear rates,and its melting viscosity decreased with the increase of shear rates.

同时探讨了分子量、剪切速率、温度对PVDF熔体非牛顿指数、粘流活化能等流变特性的影响。

Based on transformation thermodynamics analysis, the smaller the grain sizes of melt-spun alloys are, the lower the M is. The melt-spinning technology does not change the crystal structure of the alloy. There exist obvious textures with (400) crystal plane preferential oriented crystal structure in the melt-spun alloys with different quenching rates.

Ni-Mn-Ga合金马氏体相变的热力学分析表明：快淬合金晶粒愈细小，M愈低；快淬工艺不改变合金的晶体结构；在不同淬速的快淬合金中有以(400)晶面为择优取向的织构存在。

Antibacterial function of body wall was conducted by the following way: microorganism was directly resisted through the change of cuticle, such as incrassation of up-cuticle protuberance and increasing length of micro-floccus in the up-cuticle dissociation surface; exudation function of large granular orthochromatic mucous cells and reticulation mucous cells in the epidermis could be enhanced when the Eisenia fetida was induced by E. coli. Moreover, the mucus that contained compound substance of mucopolysaccharide and protein could make the bactericidal function or dilute the microorganism on the surface of earthworm, which could protect earthworm from invasion of microorganism; the content of neutral mucopolysaccharide of antibacterial function could be increased according with the exudation increment of small granular proteinaceous cells in the epidermis, which could resist bacteria invading into the epidermis of earthworm.

结果表明：蚯蚓的体壁主要是通过以下途径来抗细菌的侵袭：一是通过角质层的变化(如上胶层突起的增厚、上角层游离面中微绒毛的变长等)直接抵抗微生物的入侵；二是增加表皮中大颗粒粘液细胞和网状细胞的分泌功能，分泌出大量含有粘多糖蛋白液体复合物的粘液，在蚯蚓体表对细菌进行稀释或者起到直接杀菌的作用；三是通过增加小颗粒蛋白细胞的分泌作用，在蚯蚓的表皮中分泌出更多的抵抗疾病的中性粘多糖，从而抵抗进入蚯蚓体表内的细菌。

By reading otolith annuli for SBT aged 2-9 yr; this approach was further modified and validated for fish up to approximately 30 yr old .

通过读SBT的otolith环体变老了2-9 yr；这种方法为鱼进一步被修改了并且被确认了大约30 yr old。

In this paper dimension-chain is used to calculate the last effective dimension formed under the influence of tolerances and other distortions. Feature modeling is applied to construct the three-dimension mode of the parts in solidworks. Based on the parametric design function, simulation of assembling result is realized by making use of VB to develop Solidworks. The accomplish of variable parametric design system in tolerance designing is realiazed.

运用尺寸链技术计算出零件在公差及其他变形影响下的最终作用尺寸，利用solidworks中特征建模方法建立起装配体的三维模型，并根据该软件的参数化设计功能，利用VB对其进行二次开发，模拟了装配结果，实现了变参数设计方法在公差设计评价技术上的应用。

Methods The cognitive impairment rat model was induced by hypodermic D-galactose injection and half fat feeder (6 weeks), the Morris water maze was used to screen the model rats, which were divided randomly into 4 groups (12 rats in each group): the model group, the hydrochloricdonepezil group (0.4 mg/kg, weight, sic passim), the low-dose Huannao Yicong Fang group (7 g crude drug/kg), the high-dose Huannao Yicong Fang group (14 g crude drug/kg), they were treated respectively by intragastric administration. Besides, a control group of 12 rats was set up, they were given tales doses of distilled water. After 4 weeks, the behavior of the rats was detected, the contents of plasma P-selectin and PAI-1 were measured by ELISA, also the hemorrheology was measured.

采用皮下注射D-半乳糖及喂饲半高脂饲料（6周）的方法造成大鼠认知功能障碍，Morris水迷宫行为学测试确定模型成功的动物，随机分成四组（每组12只：模型对照组给予等量水，盐酸多奈哌齐组（0.4mg/kg，体质量，下同），还脑益聪方低剂量组（7g生药／kg），还脑益聪方高剂量组（14g生药／kg），同时灌胃给药，并设立正常对照组，给予等量水。4周后，对大鼠行为学检测，应用酶联免疫法检测大鼠血浆P-选择素及PAI-1含量和血液流变学各项指标。

Results show that the phase transition temperature of DPPA liposomes decreases with the increase of pH.

结果表明：DPPA脂质体随pH值的增加其相变温度降低。

According to petrologic analysis of 18 samples of altered rock, phlogopite rock , with regard to its B 2O 3 content, it is generally restricted to the outside of the ore bed, having certain ties with the boron minerlization while no ties are found in altered rock of the same type associated with veins of diorite porphyrite.

其中金云母岩多分布在含矿层外带，通过对 1 8件金云母岩样品中B2 O3含量分析，表明正常蚀变岩中的金云母岩与硼矿有一定的关系，而由闪长玢岩脉体侵入影响下形成的金云母岩则与矿化无关。

The rock mass consists of fresh sericite quartz phyllite or fresh leptynite.

岩体为新鲜绢云母石英千枚岩或新鲜变粒岩。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐