中强

Results show that nonspiral plate may adjust the optical intensity distribution in focal region considerably, so we can alter and control the optical intensity distribution in fbcal region by changing the vary rate of phase variation. This technique can be used to carry particles in optical tweezers system

数值模拟结果表明：通过调节相位片的相应变化率，可能方便地调节焦点区域光强分布，因此可通过调节相位片的相位变化来控制和改变焦点区域光强分布，这种技术方法可应用于光钳系统中控制搬运微小颗粒。

First Total Synthesis of OSW-1, an Exceptionally Potent Antitumor Saponin OSW-1, an acylated disaccharide steroidal saponin isolated by Sashida in 1992 from a plantnamed Ornithogalum saundersiae without any medicinal background, was one of the most potent antitumor agent to date with the cytotoxicity activity as 100 times potent as many other anticancer drugsclinically used.

一、极强抗癌活性皂甙——虎眼万年青皂甙(OSW-1)的首次全合成：虎眼万年青皂甙OSW-1是一个新近由日本化学家从非药用植物Ornithogalumsaundersiae中分离出来的具有极强抗癌活性的酰化二糖甾体皂甙，它对多种癌细胞的毒性比临床用药高100倍以上。

We can see that the low energy states absorption of Ho〓, Er〓, Tm〓 in oxyfluoride glass-ceramics sample is strong. Strong absorption makes for high pump efficiency, and easy to sensitization. Further more, strong absorption in wide frequency range will be avail to the choice of pump sources.

研究发现Er〓、Tm〓与Ho〓离子在氟氧化物玻璃陶瓷中各低能激发能级均有较强的吸收，相应的吸收跃迁振子强度有较大值，因此可选择的泵浦波长较多，同时，强的吸收将产生高的泵浦效率，且利于敏化。

There are four kind of isoforms of endothelin in human and other mammals named ET-1, ET-2, ET-3 and ET-β, which are slightly different in construction and pharmacological effect. In human beings, ET-1 is the dominative subtypes. ET-1 remains in blood at a low level about 5ng per liter on physical state. It is synthesized, stored, released and metabolized locally. The half-life of ET-1 is about 1 hour. ET-1 is the most potent vasoconstrictive factor till now, and it is more functional in vein than in artery. In vascular bed, there are two kind of ET receptors. Type A mainly located in smooth muscle cells, whereas type B in endothelial cells. The latter can stimulate intimal hyperplasia via a parasecretion way and activate some oncogenes such as c-fos and c-myc and then enhance their expression. These alterations result in constriction of blood vessels, thus the SMC steps into proliferate state from silent state.

人及哺乳动物体内有四种结构及药理学性质略有差异的异物体，分别为ET-1、ET-2、ET-3、ET-β，而在人主要是ET-1，在生理条件下，ET-1在血浆中含量较低，约为5ng〓，故ET-1不是一个循环激素，而是局部合成释放，局部起作用的活性物质，半衰期约1小时，ET-1是目前已知的最强的血管收缩剂，对静脉的作用比动脉强，在血管床，ET受体有A、B两型，A型主要分布在平滑肌细胞，B型主要分布在内皮细胞，它可以通过旁分泌途径刺激内膜增生，具有有丝分裂原效应，可以激活某些癌基因如C-fos、C-myc使其表达增强引起血管收缩，使静止期SMC进入增殖期，还可以通过信号传导途径，与bFGF、GTF-β、PDGF等生长因子协同作用，起共有丝分裂原作用。

When material is hardened by torsional prestrain in engineering, the multitude of prestrain should be as high as possible and at the same time microcracks on the surface of specimen should be avoided, in order to get a.

研究了经过预扭转变形强化后某低合金钢在拉伸中的强塑性变化规律，并对该工艺的强化效果和其对材料塑性潜力的发挥给出了定量分析，在此基础上讨论了材料强塑性的合理配合。

Polysomes change in number as "few-many-few-many" during the development of the egg, early zygote stage, zygote at dormancy, zygote in prophase of mitosis and two-celled proembryo in sugar beet, which indicates that such changes in metabolism as "low-high-low-high" activity may relate to the transformation from gametophyte to sporophyte generation.

根据上述结果可以得出，栽培甜菜从卵细胞成熟→合子初期→合子休眠期→合子分裂前期→二细胞原胚的超微结构变化中多聚核糖体的变化最为显著，表现为&少→多→少→多&的数量变化过程，反映出细胞代谢状态也经历了&弱→强→弱→强&的变化过程，这种变化趋势与配子体世代向孢子体世代转变有关。

Results:①As for slow and quick transferring methods, the strips of prestained marker in nitrocellulose membrane were stronger than those of nylon and PVDF membranes, and the face and reverso sides of nylon and PVDF membranes were easily confused;②The picture of PVDF through DAB method was slightly clearer than that through nitrocellulose and nylon membrane, and the quick transferring strips were not so regular as the slow transferring strips.

结果1。在快慢转法中硝纤膜的蛋白预染marker条带略强于尼龙膜，而尼龙膜又略强于PVDF膜； PVDF膜和尼龙膜的正反面易于混淆，而硝纤膜的正反面不易混淆。2。

The conclusions are showed as followed:1. This paper demonstrated that microbe adapt better to the environment of system and have better fastness when the organic loading is variational as soon as the reaction is startuped naturally;2. Considering the relation between the activity of microorganism and temperature and taking energy into account, the reaction is runed in 24?

所得的结论如下：一、通过试验证实，采用自然挂膜启动酸化反应装置，生物膜对反应器内的环境适应能力较强，具有较强的抗负荷冲击能力；二、结合微生物活性与温度关系，并以低能耗为原则，确定反应装置运行温度为(24±1)℃；三、结合TTC-比脱氢酶活性与pH值关系，在试验研究过程中加入异波折板高效水解酸化废水处理技术的初步研究碳酸钠溶液，提高反应装置内废水的碱度，增强系统的缓冲能力。

Finally, the article discussed the possible mechanism of multi-phase electrochemical degradation of wastewater through the XPS spectrum of the used catalysts surface: In the acid solutions, the electro-generated O_2 may get electrons on the porous graphite cathode and then form H_2O_2, H_2O_2 may diffused to the surface of catalyst and reacted with its active part to produce OH, which in turn can destruct organics. The catalyst functioned as both the catalyst to decompose H_2O_2 and the flocculants to sedimentate the degraded waste.

最后全文结合研究反应后催化剂表面的XPS光电子能谱推断了该体系降解污废水可能的反应机理：在酸性条件下，石墨双阳极产生的O_2被多孔扩散性石墨阴极还原成H_2O_2，并通过扩散传质作用在催化剂的表面活性中心分解为强氧化性中间产物·OH，强氧化性攻击有机物，使其降解为小分子有机物或CO_2和H_2O，催化剂在体系中即起催化作用也起吸附、絮凝作用。

Based on a thorough analysis of the experimental results, a coupling mechanism of the catalytic selective oxidation and non-catalytic partial oxidation in which the surface adsorbed 〓 species and the lattice 〓 species take part synergically.

在全面分析实验结果的基础上，提出了一个由表面吸附氧种〓和晶格氧种〓协同参与的甲烷催化选择氧化与气相非催化部分氧化相耦合的反应机理，催化剂的参与既在表面开辟了生成〓和HCHO的新途径，又可将气相反应中的强氧化型物种转移到催化剂表面，形成有利于选择氧化的表面活性氧种，同时避免了气相中强氧化型物种浓度过高而导致选择氧化产物深度氧化。

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