反应作用

A novel biodegradable copolymer of poly and poly (γ-benzyl-L-glutamate) was successfully synthesized. Under appropriate conditions, the PBLG initiates the ring-opening polymerization of L-lactide to produce block copolymer, by using low toxicity stannous octoate as catalyst. The optimal reaction conditions were determined as follows; the catalytic agent: PBLG=1:1, the temperature is 120℃, the reaction time is 6h.

以L-丙交酯为原料，在催化剂辛酸锡酯Sn2的作用下，利用聚的活性端氨基引发LLA进行开环聚合，合成了聚L-丙交酯与聚的共聚物，对反应条件的各项因素进行了讨论，确定了最佳反应条件是：m：m=1：1；反应温度120℃；反应时间6h。

The effects of concentration, time on the reaction was measured by UV-visible absorption spectra , the morphology of the silver nanoparticles was characterized by transmission electron microscopy; The structure of Sesbania Gum and silver colloid was measured by Fourier transform infrared spectroscopy .

通过紫外-可见吸收光谱研究了反应物浓度、反应时间对反应的影响；通过透射电子显微镜对银纳米粒子形貌进行表征；利用傅立叶变换红外光谱仪对田(来源：A116161BC论文网www.abclunwen.com)菁胶和反应所得到的银溶胶的结构进行表征；对溶胶的拉曼光谱进行检测，结果显示溶胶具有很好的Raman信号，室温下得到的溶胶表现出银纳米粒子对田菁胶的Raman信号增强作用。

These compounds, properly designed, can be 1～2 orders of magnitude more surface active than surfactants with a single corresponding hydrophobic and a single corresponding hydrophilic group in the molecules. In this work, selected trimeric surfactant TNP is first synthesized.

本文研究了Gemini表面活性剂GNP和GTB用于脂肪酸酯的碱性水解催化作用，测定了水解速率常数和反应活化能，从动力学机理上说明了所合成的Gemini表面活性剂对脂肪酸酯水解反应有明显的胶束催化作用。

Using 1,4-dibromobenzene,1,3,5-tribromobenzene and 2-methyl-3-butyn-2-ol as starting materials and PdCl2,triphenylphosphine,CuI and KOH as catalysts,1-bromo-4-ethynylbenzene,1,4-diethynylbenzene and 1,3,5-triethynylbenzene were synthesized by Sonogashina coupling reaction and elimination reaction.

以对二溴苯、1，3，5-三溴苯和2-甲基-3-丁炔-2-醇为原料，在PdC l2、PPh3和CuI的催化作用下进行Sonogash ina偶联反应，偶联产物在KOH作用下发生消去反应，分别得到对溴苯乙炔、对二乙炔基苯、1，3，5-三乙炔基苯。

Hydrogen peroxide(H_2O_2)was used as oxidant,oxalic acid as complexing agent and tungstic acid (H_2WO_4)as catalyst.

研究了以环戊烯为原料、草酸为有机络合剂、H2O2为氧化剂，在催化剂钨酸(H2WO4)的作用下一步合成戊二酸的绿色新过程，考察了氧化剂的含量、反应物配比、催化剂用量、反应温度、反应时间等对反应的影响。

To determine the effects of ovarian steroid hormones and some cytokines on the expression of RANTES in cultured cells METHODS AND RESULTS The study included the following two parts 1 The Protein Production of RANTES in Peritoneal Fluids and the Expression of RANTES mRNA in Eutopic and Ectopic Endometrium of Patients with Endometriosis Twenty-eight patients with endometriosis were selected as study group and twenty patients without endometriosis and maglinant disease were selected as control group . In our study, 10 samples of peritoneal fluid in Em and 10 samples of in En were taken, 13 specimens of ovarian endometrioma , 3 red peritoneal endometriotic lesions , 2 uterosacral ligament nodules , 17 matched eutopic endometrium and 12 specimens of endometrium in En were biopsied.

研究目的 1 从蛋白水平检测RANTES在子宫内膜异位症患者腹水中的表达，从核酸水平比较RANTES在内异症患者的异位病灶和在位内膜与非内异症患者子宫内膜之间表达的差异，探讨RANTES在内异症患者盆腔炎性反应中的作用；2 体外培养在位和异位的子宫内膜细胞，研究细胞因子TNFα、INFγ、雌孕激素以及PPARγ激动剂15-d-PGJ〓对RANTES表达的影响，探讨这些因素在内异症发病机理及内异症患者盆腔炎性反应中的作用。

The reacting tite with NDPK-A was 1:800 and theantisera was specific.Conclusions: The purified rhNDPK-A protein exists mainly in the form of hexamer;rhNDPK-A protein can promote the survival of spleen cell and may take part in theadjustment of cell growth by the way of changing cell cycle.

ELISA法检测所制备的抗体的反应效价为：1：800，western blotting试验结果证实，该抗血清具备较好的特异性，能与rhNDPK-A蛋白发生反应，结论：rhNDPK-A蛋白可能主要以六聚体形式存在，直接观察的蛋白结构与文献报道的X衍射结果相似；rhNDPK-A蛋白对正常小鼠的脾细胞的存活有促进作用，推测很可能以信号转导的方式调控细胞周期从而达到对细胞生长的调节作用。

This paper mainly introduces experimental methods and basic principle about gelled acid reaction kinetics.

介绍了胶凝酸反应动力学的试验方法及基本原理，进行了普通酸和胶凝酸与灰岩的反应动力学试验，得到不同条件下的酸岩反应动力学参数及反应动力学方程，对优化碳酸盐岩油藏酸压设计有一定的指导作用。

METHODS Mice hot-plate, writhing test and mice menalgia model of acute stress blood stasis rat was used to compare therapeutic action of the three preparations RESULTS Both chuanxiong formula granule and decoction pieces standard broth of liquored Chuanxiong formula granule and decoction pieces stand ard broth could prolong pain threshold, extend incubation period caused by acetic acid andoxytocin, reduce writhing frequency, and improve some indexes of hemoreology in acute stress blood stasis rat.

选择热板法、扭体法、痛经模型、急性应激血淤血液流变性等方法，比较川芎配方颗粒及饮片、酒川芎配方颗粒及饮片的主要药理作用。结果川芎配方颗粒与川芎饮片标准汤剂、酒川芎配方颗粒与酒川芎饮片标准汤剂均能延长小鼠热板痛闭值，均能延长醋酸所致扭体反应的小鼠扭体潜伏期并减少扭体次数，均能延长小鼠痛经模型中催产素所致扭体反应的潜伏期并减少扭体次数，均具有改善急性应激血淤大鼠血液流变的作用。

Ferric chloride catalyzed direct conversion of carbonyl compounds to the corresponding chloride with silicon hydride ( dichloromethylsilane , chlorodiphenylsilane or trichlorosilane) was realized.

在甲基二氯硅烷作用下，FeCl3能催化羰基化合物的还原氯代反应，得到相应的氯代产物；在甲基二氯硅烷、PBr3或NaI作用下，FeCl3可以催化羰基化合物的还原溴代或碘代反应，分别以良好的收率得到相应的溴代烷或碘代烷

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。