反应体

The DFT (B3LYP/6-31 + G) method was used to study the relative stabilities and probable proton transfer in isolated and monohydrated 2,4-dithiothymine molecules in gas phase. The effects of water on relative stabilities and the rate of the proton transfer were analysed. The results indicate that only one tautomer for 2,4-dithiothymine can exist in gas phase.

采用密度泛函方法在B3LYP/6-31+G水平上研究了2，4-二硫基胸腺嘧啶孤立分子和水合物的异构体的相对稳定性和可能的质子迁移反应，分析了水分子的参与对 2，4-二硫基胸腺嘧啶异构体的相对稳定性和质子迁移速率的影响。

The hydrolysis rate constant of TEOS in mixed systems was larger compared with TEOS in single precursor systems.

与单前驱体水解一致的是，在双前驱体系中TEOS和DDS自身的反应级数仍保持一级，但是氨和水的反应级数都有不同程度的增大。

Results show that, by using thionyl chloride and N,N-dimethyl formamide as chlorinating reagent and dichloromethane as solvent and taking -15℃ as reaction temperature, Z-iomer crystals with pale white color and stable to temperature can be obtained with an overall yield of 70%.

以2-（2-氨基噻唑－4-基）－2-甲氧亚氨基乙酸为原料，经盐酸化、氯代等反应合成了Z-2-（2-氨基噻唑－4-基）－2-甲氧亚氨基乙酰氯盐酸盐；氯代时以用亚硫酰氯和N，N-二甲基甲酰胺的混合物代替五氯化磷作氯化剂，并考察了温度和溶剂对氯代产物中Z-异构体和E-异构体收率的影响。

We also tested the ligands in the asymmetric epoxide ring opening reaction with thiophenol, and as high as 67%ee was gained while using L7. 3. Studies on the reaction of α-hydroxyketone with nitroalkene.

此外我们还初步尝试了将配体应用于催化苯硫酚对环氧的不对称开环反应中，当使用甲基取代H8-BINOL衍生的配体L7时最高取得了67%ee的结果。

The effects of reactive route and temperature on forming control of four isomers were examined in the processes of synthesizing the thymine dimer.

考察了环丁烷嘧啶二聚体合成中反应途径和温度对四种异构体生成的影响和控制。

Methods Fungus, trichomonad, germs, anaerobic bacteria Gardinerella was detected for sialidase by chemical reaction; Gold colloid method was adopted to detect the antigen of chlamydia trachomatis.

真菌、滴虫、各种细菌、厌氧菌、支原体采用体外培养和生化反应的方法进行培养和鉴定，加德纳菌采用化学反应的方法检测唾液酸酶，沙眼衣原体采用金标法检测其抗原。

Methods Beagle dog liver microsomes were prepared by using ultracentrifuge method. After incubating 0.4 μmolL^(-1) MN9202 with 1 gL^(-1) microsomes for 30 min at 37℃, the reaction was terminated by adding 0.5 mL alkalization. The RP-HPLC was used to determine the drug in the incubation mixture.

差速离心法制备Beagle犬肝微粒体酶，0.4μmolL^(-1)的MN9202与1.0gL^(-1)的肝微粒体酶在37℃水浴中孵育30min，加入0.5mL碱化液终止反应，然后采用RP-HPLC法测定孵育液中MN9202原形药物的浓度。

Under the condition of 250℃,48 hours and 10M NaOH, adopting the PEG makes the ratio of length/width increase in comparison with the unadopted conditions.

以Zr(NO_3)_4与NaOH反应产物做水热反应前驱体，主要是通过NO_3~-离子的吸附影响晶体生长。

The movement can be divided into two regions, one is the active surface region, the other is the solid region, and it goes under the way of rolling and falling. The heat transfer process in rotary kiln goes with extremely complex physical and chemistry process. Considering the revolving of the kiln body itself and the special movement way of the materials, as well as the influence of the material reaction dynamic parameters, we have established the unidimensional axial heat transfer model for rotary kiln. Then according to the tentative data which has been published, we have testified that the unidimensional axial heat transfer model could reflect the

回转窑内的传热过程伴随着十分复杂的物理化学过程，考虑窑体自身的旋转和物料运动的特殊方式，以及物料的反应动力参数等的影响，建立了回转窑内一维轴向传热模型，并根据已发表的试验数据对建立的一维轴向传热模型进行了验证，该模型可以反应出回转窑内各相沿轴向的温度分布趋势，这样结合热工分析，可以对回转窑的生产和运行给出适用的指导，并力图达到增产节能的效果。

The unimolecular decomposition and dehydrogenation of ethanol initiate the branched chain reaction, and the 3 isomers of radical C2H5O determine the direction of the reaction chain branching.

乙醇氧化经裂解反应、脱氢反应最终形成支链反应，乙氧基C2H5O的三种同分异构体在链分支中决定了链分支的进行方向。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。