氢化

Hydrogen halides also react with β-unsaturatedcarbonyls and.

卤化氢也与不饱和羰基和共轭二烯醇反应。

The SmI2-mediated reductions of ketones,imines and α,β-unsaturated esters have been shown to be instantaneous in the presence of H2O,an amine and in THF.

在水、胺以及四氢呋喃存在下二碘化钐参与的还原酮、亚胺以及α，β不饱和酯的反应能够在瞬间完成。

There are some microtubular and spiral goethites scattered among the iron hydroxide colloidal cloud and submicrometer-size colloidal particles.

电子显微分析观察到在非晶质氢氧化铁凝胶团和亚微米级微粒聚集体中存在特殊的显微管状和螺旋状针铁矿，显示出明显的生物矿化特征。

Seeping water ; iron hydroxide ; microtubular and spiral goethite ; biomineralization

渗漏水；氢氧化铁；显微管状和螺旋状针铁矿；生物矿化

Light straight run gasoline, lower-boiling range distillates and other non-hydrotreated fuels ("sour stocks") contain sulfur compounds such as mercaptans, that must be removed ("extraction/sweetening") to avoid problems with odor and corrosion, or prior to catalytic reforming and catalytic alkylation processes.

轻质直馏汽油、低沸点蒸馏油和其它未经加氢处理过的燃油含有硫醇类硫化物，须采取措施将其去除以免引起异嗅或腐蚀问题，或者须在催化重整和催化烷基化反应工序之前将其脱除以避免毒化催化剂。

The complexes areneutral as shown by values of molar conductivity in aqueous solution, namely,〓 The crystal structure determinations show that, in complexes, metal ions werecoordinated by four nitrogen atoms and form slightly distorted square planar configuration,relationship between fluorene ring plane and coordination plane is similar to those betweenpeptide planes of β-folding in proteins. The complex molecules linked by hydrogen bonds formone dimension chain or two dimension network structure.

摩尔电导测定表明他们都是二氧四胺中酰胺氮去质子化后形成的产物。X-射线衍射晶体结构测定表明〓的铜、镍配合物的配位多面体都是稍微畸变的平面正方形，配合物分子中芴基平面与配位平面的关系类似于蛋白质β-折叠结构中肽平面之间的关系，配合物分子之间通过氢键连接成一维链状或二维网状结构。

For metabolites of strain SIPI-800, three active compounds were found, named as SIPI-800-1, 2 and 3 respectively, moreover SIPI-800-1 was new compound showing immunosuppressant activity and moderate anti- anaerobic activity; 2 and 3 were isoflavones with estrogenic activity, attracting activity to fungal zoospores, inhibiting alcohol dehydrogenase and aldehyde dehydrogenase I activities.

对SIPI-800菌株的代谢产物研究，分离出3个活性化合物，分别命名为：SIPI-800-1、2和3，其中1化合物为文献没有报道的新化合物，具有免疫抑制活性（1ug/ml浓度抑制NK细胞88.9%的活性）和弱的抗厌氧菌活性；2和3为异黄酮化合物，分别为Daidzein和Genisten的7甲基化衍生物，具有雌激素活性、强吸引真菌游动孢子、抑制乙醇或醛脱氢酶等活性。

For the case of pH-induced micellization, as pH of the solutions decreases to below 4.6, micellar structure having insoluble complexes of PAA/PNiPAAm as the core and solvated HEC chains as the shell can be obtained due to hydrogen-bonding complexation between the proton-acceptors in PNiPAAm and the proton-donors in PAA.

首先发现pH诱导胶束形成的临界pH值在4.6附近，证实了胶束化机理是由于低pH下PAA接枝链上的质子给体与PNiPAAm支链上的质子受体间的氢键络合形成胶束的&核&，HEC不参与络合形成胶束的&壳&。

With the aid of 〓P NMR examination for the process and ESI-MS/MS analysis of the derivatized products from the reaction intermediate, it is found that the corresponding phosphoryl chloride is generated after mixing the hydrogen phosphonate derivative with chlorodiisopropylamine, and they react with amino acid, amino acid methyl ester, dipeptide methyl ester or N-methyl imidazole carboxyl alkyl diamine respectively to form the desired products.

利用〓P NMR对反应过程监测以及对反应中间体衍生化后产物的ESI-MS／MS检测分析发现，氢亚磷酸二酯与氯代二异丙胺反应首先生成了磷酰氯中间产物，它继续与氨基酸、氨基酸甲酯、二肽甲酯、1-甲基咪唑-2-酰基烷基二胺等反应生成了目标产物。

Fumarates ; Phosphines ; Aluminum compounds ; Food preservatives ; Cereals

延胡索酸盐类；磷化氢类；铝化合物；食品防腐剂；谷物

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。