氢化

The experiments also show that adding NaHSO3 into the reaction liquid of hydroxylation reaction can inhibit the catalytic effect of benzoquinone and residual catalyst on the phenolic tars formation caused by oxo-condensation of the diphenols and therefore reduce the tars formation of the diphenols in the reaction solution.

在羟基化反应液中加入亚硫酸氢钠可以抑制对苯醌和残留催化剂对苯二酚氧化缩合生成焦油的催化作用，从而减少了反应液中苯二酚的生焦反应。

In the same time, water-soluble bidental phosphines ligand BISBIS sulfonated 2,2''-bis(diphenylphosphinomethyl-1,1''-biphenyl was synthesized, and water-soluble rhodium complex Cl was synthesized in situ. This complex which was used as catalysts to catalyze the hydrogenation of avermectin was also tested. Although the rhodium complex containing bidentate phosphine BISBIS showed a higher catalytic activity than one containing TPPDS, the selectivity for ivermectin was lower. How to improve the selectivity will be needed to studied in futur.

同时我们用磺化的2，2''-二-- 1，1''--联苯，以及它们的水溶性威尔金森型铑配合物和环辛二烯的阳离子铑配合物，在利用这些配合物作催化剂，考察它们在各种反应条件下对阿维菌素的选择加氢，由于反应条件以及复合催化剂体系的组成还需要进一步优化，虽然双齿膦配合物显示了较高的活性，然而选择性还有待进一步提高。

There may be an interpretation of bimolecular cyclohexane-type mechanism for n-hexane isomerization on H-mordenite.

用双分子六元环反应中间物机理能较好地解释正己烷在氢型丝光沸石上的异构化过程。

The title compound was colorless crystal synthesized via the reaction of 4, 4'-bipyridine and HgI2 in the mixtured solution of methanol and tetrahydrofuran.

标题化合物是双齿配体4，4'-联吡啶与碘化汞在甲醇和四氢吨位呋喃混合溶液中反应得到的无色晶体。

A salt of bromic acid.To achieve such a miracle, the semiconductor industry has gone to extremes, using the world's most toxic substances like Arsine, Phosphine, Hydrofluoride, Hydrobromide and the like.Soon, even Synchroton will be used.

但是，为了这种&奇迹&，半导体技术也到了无所不用其极的地步，世上最剧毒的物质如砷烷(ah3)、磷烷(ph3)、氟化氢、溴化氢，等一长串毒品全都用上，很快连同步加速器也要用上去了。

The monomer ofbromostyrene was synthesized fromβ-bromobenzene by eliminating hydrogenbromide under sodium hydrate.

溴乙基溴代苯在氢氧化钠的作用下，发生溴化氢脱除反应，得到溴代苯乙烯单体。

Universal indicator paper,special indicator paper,ammonium fluoride,ammonium hydrogen difluoride,nbenzyldimethylamine,disinfectant paper,nacetylphenylhydrazine,mcresol purple,bromocresol green,fluorescein,eosin Y,ninhydrin,phenedons,potassium phthalate,pamimobenzene sulphonic acid anhydrous.

广泛试纸，精密试纸，氟化铵，氟化氢铵，N苄基二甲胺，消毒试纸，N乙酰苯肼，间甲酚紫，溴甲酚绿，荧光素，曙红Y，水合茚三酮，菲尼酮S，苯甲酸氢钾，无水对氨基苯磺酸。

The results show that the formation of dry gas is abided by reaction mechanism involving the cleavage of pentacoordinated Carbonium ion which is formed by the protonation of alkanes over acidic catalyst.

结果表明，烷烃分子首先在催化剂酸性中心作用下发生质子化反应，烷烃分子链上易受到氢质子进攻的位置一般在其叔碳原子或碳链中心碳原子附近的C—H键或C—C键处，形成两种反应过渡态物种——五配位正碳离子H-Carbonium和C-Carbonium。

The model mice were then treated by giving GDNF into the striatum. After a seven-day survival period, the model mice were sacrificed to get the segment of substantial nigra fixed, embedded and coronally sectioned continuously. The microsections were processed by immunohistochemistry using anti -TH and anti-CB antibodies to label DA neurons and CB-containing neurons respectively, which were counted under microscope and analyzed statistically.

利用1-甲基－4-苯基1，2，3，6-四氢吡啶(1-methyl-4-phenyl-1，2，3，6-tetrahydropyridine，MPTP)制备成年小鼠PD模型，通过单侧纹状体定位注射GDNF，取中脑黑质节段，做连续冠状石蜡切片，结合免疫组织化学染色方法，观察各组酪氨酸羟化酶(tyrosine hydroxylase，TH)、钙结合蛋白(calbindin D28k，CB)的表达，光镜观察并细胞计数，统计学分析。

The basic functionalized ionic liquid, 1 -butyl-3-methylimidazolium hydroxide OH, was prepared and used to catalyze the Knoevenagel condensation of aromatic aldehydes with malononitrile or ethyl cyanoacetate.

合成了碱性功能化离子液体氢氧化1-丁基－3-甲基咪唑，研究了将其作为催化剂催化芳香醛和丙二氰、氰基乙酸乙酯的Knoevenagel缩合反应。

The concept of equivalent rotationally rigidity is offered and the formula of rotationally rigidity is obtained.

主要做了如下几个方面的工作：对伸臂位于顶部的单层框架—筒体模型进行分析，提出了等效转动约束的概念和转动约束刚度的表达式。

Male cats normally do not need aftercare with the exception of the night after the anesthetic.

男猫通常不需要善后除了晚上的麻醉。