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1 Heptane, it was revealed that the Cr〓/ Catsan and ZnCl〓 could catalyze the Michael addition of pyrrole with conjugate olefine at α-position of pyrrole to get mono- or bi-Michael addition product selectively under mild condition in good yield. Totally, forty-six new compounds, including thirty target compounds, were prepared.

在探索7-氮杂桥环母体的构建方法过程中，发现了Cr〓／Clay和ZnCl〓可有效地催化吡咯的α-位与多种共轭烯烃发生Michael加成反应，可在温和的条件下，以良好的收率选择性地得到单或双Michael加成产物。

Composition of the basic glass, addition amount of opacifier Na2SiF6, addition amount of Al2O3 and CaO, glass melting temperature amid time, etc.

基础玻璃的组成、Na2SiF6乳浊剂的引入量、Al2O3与CaO的引入量以及熔制温度的高低、熔制时间的长短等都会影响能否制得玉色玻璃。

That 1,4-addition reactions of Grignard agent made from 1-bromo-3-triphenylmethoxyl-1-octene and organozinc agent made from 1-iodo-3-trimethysiloxy-1-octene with 2-(6-methoxylcarbonylhexyl)-4-(2- tetrahydro-pyranyloxy)-2-cyclopentenone both gave prostaglandin 〓 methyl ester statethat prostaglandin E compounds can be prepared by 1,4-addition reaction oforganozinc agent.

最后，研究了溴化-3-三苯甲氧基-1-辛烯基镁和碘化-3-三甲硅氧基-1-辛烯基锌与2-(6-甲氧羰己基)-4-(2-四氢吡喃氧基)-2-环戊烯酮通过1，4-加成反应合成〓甲酯的方法，结果表明，用有机锌试剂通过1，4-加成反应来合成PGE类化合物是可行的。

In addition, oxidoreduction potential of medium was regulated by addition of electron receptors or controlling the ratio of air to nitrogen. By optimizing the fermentation conditions of DA-1HB, 70 g.l-1 1,3-PD was produced and the molar yield of 1,3-PD from glycerol reached 69.9%.

4以1，3-PD合成性能占优的重组菌DA-1HB为工作菌株，调控培养基氧化还原态势，优化发酵工艺，以甘油为唯一碳源时，1，3-丙二醇合成浓度和摩尔得率分别达到70 g.l-1和69.9%。

The results show that higher zircon addition resists the densification of fused magnesia zirconia materials,and the zircon addition influences the crystalline size of periclase,pore size and the pore structure significantly.

结果表明，配料中锆英砂含量的增加使熔浆的粘度上升，合成料难以致密化。锆英砂配入量对ZrO2晶形及晶粒尺寸影响不大，但明显影响方镁石的晶形、晶粒尺寸以及气孔的形状和尺寸。

After fired at 1600℃, with the increase of zircon addition the bulk density of the samples increases while apparent porosity decreases. When zircon addition is 4%, the strength is the best, and the photomicrograph of the sample exhibits a densely packed microstructure, with larger and better developed grains of periclase and spinel. Meanwhile, the direct bonding of solid phases is reinforced.

在1600℃热处理下，随着w(ZrSiO4)的增加，试样的体积密度增大，显气孔率变小，试样力学强度在w(ZrSiO4)为4%时达到最大值。w(ZrSiO4)为4%的试样整体显微结构致密，固相直接结合程度提高；并且方镁石和尖晶石晶粒的晶粒尺寸粗大，晶粒发育比较完整。

In BZY_(10), addition of ZnO leads to a monotonically decreased DC electrical conductivity. In SZY_(10), addition of 2~5 mol% ZnO had benecial effects on its protonic conduction.

ZnO主要以固溶取代的形式存在于SZY_(10)和BZY_(10)晶格中，其在晶格中固溶使晶格缺陷增加是主要的促烧机理。

Is highest by the apple forest interplanting sealwort addition output and the new rhizome polysaccharide content respectively reaches 19.4%, 21.8%,40% transmittance visor net visor processing sealwort addition output and the new rhizome polysaccharide content is lowest, has 13.4% and 11.0%.

以苹果林套种黄精新增产量和新根茎多糖含量最高分别达19.4%、21.8%，40%透光率遮阳网遮阳处理黄精新增产量和新根茎多糖含量最低，只有13.4%和11.0%。

The experimental results indicated that the addition of yellow serofluid had better nitrogen source effects than carbamide with its optimal addition level as 2 %(cell concentration increased by 18 %, bud ratio increased by 16 %, and liquor yield by alcohol fermentation increased by 2.2 %), which could settle the problem of environment pollution induced by direct discharge. The use of yellow serofluid in the production of alcohol from cassava could increase alcohol content in fermenting solution and liquor yield by 14.2 %Vol and by 35.5 % respectively.

结果表明，添加黄浆水作为酒母培养的氮源效果优于尿素；最适添加量为2 %；成熟酒母发酵液中细胞浓度比尿素作营养盐时提高18 %，出芽率提高16 %，酒精发酵出酒率提高2.2 %；可解决直接排放带来的环境污染问题；用于木薯原料酒精发酵，发酵液中酒精度可达14.2 %Vol，原料出酒率为35.5 %。

Silica and alumina, to an organic silicone rubber, ShoreA 70, to improve the hardness of silicone rubber material and the results indicated that the addition of silica improved the hardness of the material dramatically, but depressed the heat-resistance markedly; the addition of alumina improved the hardness of the material also, but more loading was needed to achieved the hardness as compared with the silica added materials.

研究发现，添加气相法白碳黑能显著提高硅橡胶的硬度，但使硅橡胶的耐热老化性能明显变差；氧化铝也可以用于提高硅橡胶的硬度，但与气相法白碳黑相比，达到相同硬度时的添加量要大的多；比较而言，通过添加氧化铝获得的高硬度硅橡胶具有较好的综合性能，更能满足电化铝烫印版的制作需要。

They go to town. Would you just ask them?

他们在城里你能问他们吗？

Ossein pretreated for a2 weeks period exhibited the maximum% yield incase of bone gelatin, while the yield from intact skin was higher than that realized incase of de-scaled skin.

预处理时间达2星期的骨胶原表现出最高的骨明胶百分产量，然而从未处理鱼皮中得到的产率比去鳞的鱼皮得到的要高。