反应作用

Asymmetric hydroboration is a kind of widely applied and valuable reaction, in which borane reduction of prochiral ketones reaction is an important method.

不对称催化硼氢化反应是应用广泛且具有工业价值的反应，其中的硼烷还原前手性酮反应有着举足轻重的作用。

The rate of the reaction between RSH and oxygen, which is catalysed by CoTSPc ,is determined by the decrease of oxygen volume.

讨论了CTAB对该反应的作用机理，计算了反应生成物的组成和反应的平衡常数。

The higher performance of reaction and decoking. were obtained in the GOC processes, as compared with their pyrolysis processes.

实验结果表明，O2的存在降低了正癸烷GOC反应的活化能，使反应在较低的温度下具有高的反应性能；O2同时起到消除积炭的作用，提高体系的抗积炭能力。

Enynes with an aryl ring at the alkyne give 2,3,9,9a-tetrahydro-1H-cyclopentanaphthalenes by a 5-exo-dig cyclization followed by a Friedel-Crafts-type ring expansion.

带有芳环的1，6-二烯体和炔作用，并通过5-exo-dig路径环化，再紧接着Friedel-Crafts扩环，可以得到2，3，9，9a-四羟基-1H-环戊二烯并萘。6-endo-dig途径的环化在一些例子中作为副反应被观察到，尽管，这在一些具体的反应中，是作为主反应出现的。

Progesterone and #gamma#-aminobutyric acid could initiate the acrosome reaction in guinea pig spermatozoa,which was independent of extracellular Cl一in vdro,and a potentiation effect between progesterone and GABA was demonstrated.

在体外，孕酮和#gamma#-氨基丁酸可明显地引起豚鼠精子顶体反应，并且两者合并使用，对顶体反应的诱发有协同作用；这种反应不依赖于细胞外C1-。

Aim:(1) The purpose of this study is to examine whether protein tyrosine kinase and AMPA receptor in the nucleus tractus solitarius and nucleus ambiguus were involved in the regulation of normoxia and hypoxia respiratory response by microinjection of PTK inhibitor and non-NMDA receptor antagonist;(2) To observe the change of number of phosphotyrosine immunopositive neurons in NTS and NA before and after hypoxia using immunohistochemical methods and whether tyrosine phosphorylation and GluR1 in postsynaptic membrane co-localize in NTS and NA neurons.

目的：(1)观察向家兔脑干孤束核或疑核内微量注射酪氨酸蛋白激酶阻断剂和谷氨酸AMPA受体阻断剂对常氧呼吸和低氧呼吸反应的影响，探讨PTK和AMPA受体在低氧呼吸反应中的作用。(2)观察低氧通气后NTS和NA磷酸化酪氨酸免疫阳性神经元的数量变化；观察磷酸化酪氨酸和AMPA受体亚单位GluR1在突触后膜共存的情况，推测在低氧呼吸反应中AMPA受体和PTK信号转导途径的关系。

The results showed that,the synergistic effect to the degradation of methyl orange by Fenton synergized with nanometer TiO2 was observed.

在实验浓度范围内，甲基橙的降解反应符合准一级动力学过程；与Fenton反应相比，在0.2、0.4、0.6g/L纳米TiO2的协同作用下，甲基橙的降解表现反应常数分别提高了1.71、2.51和3.36倍，半衰期相应缩短。

The prerequisite for the multi-reaction of heavy metal ions distributed on the mineral-water interface mainly depends on the hydrolyzation of the ad sorbates and the electric charge of the sorbent. Thus the pH value becomes a key factor affecting the reaction of mineral-water interface.

金属离子(M2+)在矿物-水溶液间分配有多种表面反应机制，这些表面反应发生作用的条件主要取决于吸附质水化学性质和矿物表面荷电性，因此，溶液pH值是影响矿物/水界面反应性的关键因素。

The hydrolysis kinetics of two salicylates (n-butyl salicylate, phenyl salicylate) are studied in CTAB surfactant solution by using UV-vis spectroscopy.

应用UY—vis法，在不同温度条件下，对水杨酸酯在CTAB溶液中的水解反应进行跟踪，测定了不同浓度的表面活性剂存在下的反应速率常数，得出CTAB对其反应是禁阻作用。

Studies of the effect of various active oxygen quenchers on HC-B Photosensitized oxidation of bilirubin indicated that in serum both free radical reactions and singlet oxygen reaction seem to occur simutanously.

比较在不同溶剂中各种活性氧淬灭剂对胆红素光氧化的抑制作用，指出血清胆红素光敏氧化反应包括自由基氧化反应和单态氧氧化反应等多重机制。

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。