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The catalyst includes: supported Ziegler-Natta catalyst of titanium halide compound and organic electron donor compound supported with MgCl2 alcoholate carrier; aluminoxane prepared with trialkyl aluminum and water; and one kind of organic electron donor, such as organosilicon compound R2Si(OCH3)2, where R is phenyl, isopropyl, isobutyl or cyclopentyl.

该催化剂包括,a一种负载型的Ziegler-Natta催化剂,即将卤钛化合物和有机给电子体化合物负载在氯化镁醇合物载体上得到的固体催化剂,b一种通过三烷基铝与水反应而制备得到的铝氧烷和c一种有机电子给体,如有机硅化合物R 2 Si(OCH 3 ) 2 ,其中R为苯基、异丙基、异丁基或环戊基。

A cellulose cuprammonium solution was sprayed into the -40℃ frozen liquid containing 20% Silicone oil and 80% hexane to form microspheres contained fine ice crystals,then regenerated the cellulose with 40% H 2SO 4 cooled to -30℃,and the microspheres were modified with diethylaminoethylchloride,the cellulose porous microcarriers for animal cell culture were prepared.

将纤维素铜氨溶液喷洒至-40℃的硅油:正己烷=1:4的冷冻液中形成含冰晶的微球,用-30℃、40%的H2SO4再生纤维素,并用EDAE盐酸盐修饰其表面,制成适合动物细胞培养的纤维素多孔微载体。

Objective: To sexplore the anti-tumor activity to Hela, SW480 and A549 and the growth regulative activitiy to radishes of amphibrya besides corns of dicotyledon of the target compound γ-(N-p-methylphenylsulfonyl) aminopropyl-3, 7, 10-trimethyl-2, 8, 9-trioxa-5-aza1-1-silicontricyclo [3, 3, 3, 0(superscript 1,5)] Undecanes.

目的:探讨目标化合物γ-丙基-3,7,10-三甲基-2,8,9-三氧杂-5-氮杂-1-硅杂三环[3,3,3,0(上标 1,5)]十一碳烷对人宫颈癌细胞、人结肠癌细胞(SW480)和人肺腺癌细胞(A549)的抗肿瘤效应以及对单子叶植物玉米、双子叶植物萝卜的生长调节作用。

A catalyst composition for the polymerization of propylene comprising one or more Ziegler-Natta procatalyst compositions comprising one or more transition metal compounds and one or more esters of aromatic dicarboxylic acid internal electron donors; one or more aluminum containing cocatalysts; a selectivity control agent comprising at least one silicon containing compound containing at least one C1-10 alkoxy group bonded to a silicon atom, and one or more activity limiting agent compounds comprising one or more aliphatic or cycloaliphatic carboxylic acids; alkyl-, cycloalkyl- or alkyl-ester derivatives thereof; or inertly substituted derivatives of the foregoing.

一种用于丙烯聚合的催化剂组合物,所述催化剂组合物包括:一种或多种齐格勒-纳塔主催化剂组合物,该主催化剂组合物包括一种或多种过渡金属化合物和一种或多种芳族二羧酸酯内部电子给体;一种或多种包含铝的助催化剂;选择性控制剂,该选择性控制剂包括至少一种包含硅的化合物,该化合物包括至少一种与硅原子连接的C 1-10 烷氧基;和一种或多种活性限制剂化合物,该活性限制剂包括一种或多种脂族或脂环族的单或聚羧酸类、其烷基-、环烷基-或烷基-衍生物、或上述惰性取代的衍生物。

The initial three chapters of this dissertation aim to improve the regularity of ladderlike polysiloxane through strong H-bonding template and slowly dropping half water for hydrolysis and condensation.

本论文前三章旨在利用强氢键模板作用和半水量水解同步缩合脱氯化氢的改进方法首次合成了(1)高规整性、可溶的反应性含对苯二胺有机桥基的聚氢基硅氧烷高分子,29Si-NMR 图中显示梯形主链上硅原子-Si(HO2/2峰的基线宽度△1.0 ppm,这是至今文献报道的所有梯形聚硅氧烷规整性最好的数据;采用分段去撑法成功的合成了纯无机梯形聚氢基硅氧(来源:1bABC论文网www.abclunwen.com)烷。

Ingredients: olive extract,whitening factor,squalane, caprylic/decanoic acid glycerol ester, methyl silicone oil, dimethyl silicone oil, rrimethylglycine, xanthane.

成分:橄榄提取液,美白因子,合成角鲨烷,辛酸癸酸甘油酯,环甲基硅油,二甲基硅油,三甲基甘氨酸,汉生胶。

Ingredients: lemon extract, honey,whitening factor, squalane, caprylic,decanoic acid glycerol ester, methyl silicone oil, dimethyl silicone oil, rrimethylglycine, xanthane

成分:柠檬提取液,蜂蜜,美白因子,合成角鲨烷,辛酸癸酸甘油酯,环甲基硅油,二甲基硅油,三甲基甘氨酸,汉生胶

Ingredients: shea butter extract,whitening factor, moisturizing factor,squalane, caprylic/decanoic acid glycerol ester, methyl silicone oil, dimethyl silicone oil, rrimethylglycine, xanthane.

成分:乳木果提取液,美白因子,保湿因子,合成角鲨烷,辛酸癸酸甘油酯,环甲基硅油,二甲基硅油,三甲基甘氨酸,汉生胶。

A thin heteroepitaxial β SiC layer was deposited on Si(001) substrate by negative bias treatment and chemical vapor deposition growth using nontoxic,nonflammable hexamethyl disilazane organic compound as the carbon source.

采用无毒、不易燃的六甲基二硅胺烷和氢气在硅(001)单晶上用施加负偏压处理和化学汽相沉积方法预沉积定向的βSiC。

The sulphur-containing vegetables were treated with a phosphoric acid-assisted to inactivate enzymes, and were cut into pieces and homogenized. Samples were extracted with acetone-hexane (1:1) and partitioned with hexane. The extract was cleaned up with florisil column and detected using gas chromatography with electron capture detection.

采用10%磷酸处理含硫蔬菜,去除含硫化合物的干扰,再用1:1的丙酮-正已烷提取,加入2%的硫酸钠溶液用正已烷进行液液分配,提取液用硅镁吸附剂层析柱净化,用气相色谱-电子俘获检测器检测。

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