解经的

In continuing efforts to identify active components from traditional Chinese herbal medicine, professor Yao and co-worker also obtained this compound from the rhizome of Dioscoreaceae by repeated bioactivity-guided isolation and tested its anticancer activities in vitro with a panel of 60 human cancer cell lines performed in NCI.

长期以来，姚新生教授等一直致力于从传统中草药中寻找活性成分的研究，他们采取活性追踪分离方法，从粉荜解中同样分离得到了methyl protodioscin并经NCI用60种人癌症细胞株筛选其体外抗癌活性。

The pigment of Berberis heteropoda Schrenk is a type of anchocyanin and it is strong in resistance against light and to some extent, good in enduring heat and low consistence oxide. But it is poor in resistance against reductant and preservative. It can be applied to the condition of PH. It is also found that sucrose and most of metal ions do not exert negative effects on the stability of the pigment, except Fe3+, Fe2+and low consistence Pb2+, which have some extent effects. Adding stability matter can improve its stability. The harm trace elements contains are within requirement of the National Standard on food safety, As the lexicological study indicates that the pigment does not have any toxicity and mutagenesis, it can be used as edible pigment.

结果表明：大孔树脂吸附-解吸附法纯化黑果小檗色素实验室工艺简单易行，色素回收率高；黑果小檗色素属于花色苷类色素；耐光性好；对热有一定耐受性；对低浓度氧化剂有一定耐受性；耐还原性差；对防腐剂耐性差；适用PH＜6条件下使用；蔗糖和大多数金属离子对色素无不良影响，但Fe~(3+)、Fe~(2+)、Sn~(2+)和低浓度pb~(2+)对色素有影响，加入稳定剂后，可提高色素的耐热性、耐氧化性、耐防腐剂能力；经对有害微量元素进行检测和毒理试验表明，该色素安全无毒，可以作为天然食用色素使用。

Schistosoma japonica antigen cDNA clones were identified by lysogenic expression,flat lyiic method and PCR amplification. All 8 positive clones immunologically screened could be expressed in E- coli in the form of fusion proteins with the molecular weight being about 140 to 150 kDa. The positive cDNA genes were digested by restriction endonuclease EcoRI,then the agarose gel electrophoresis revealed the size of them being 700 to 900 bp.

利用融源表达、平板裂解法和PCR扩增三种不同方法分别对日本血吸虫抗原cDNA基因进行鉴定和分析，8个免疫筛选阳性克隆均能在大肠杆菌中以融合蛋白的形式表达，表达蛋白分子量为140～150kDa，抗原cDNA基因经限制性内切酶EcoRI酶解后，琼脂糖凝胶电泳显示其大小为700～900bp，PCR能扩增出特异性条带。

Calcining seed of rutile titanium dioxide was prepared at low temperature using metatitanic acid as raw material through alkaline hydrolysis, hydrolysis reaction, first washing, neutralization reaction, second washing and acid dissolution. These kinds of seed were added in the salt treatment, and the influences of calcining seed and calcination temperatures on the content of rutile TiO2 pigment were examined systemically.

以偏钛酸为原料，经碱解反应、水解反应、一次洗涤、中和反应、二次洗涤、酸溶反应，低温下制备了高活性金红石型TiO2锻烧晶种，并将其用于盐处理过程，考察了晶种添加量和锻烧温度对TiO2晶型转化的影响。

Calcining seed of rutile titanium dioxide was prepared at low temperature using metatitanic acid as raw material through alkaline hydrolysis,hydrolysis reaction,first washing,neutralization reaction,second washing and acid dissolution.

以偏钛酸为原料，经碱解反应、水解反应、一次洗涤、中和反应、二次洗涤、酸溶反应，低温下制备了高活性金红石型TiO2煅烧晶种，并将其用于盐处理过程，考察了晶种添加量和煅烧温度对TiO2晶型转化的影响。

Hexahydropyridazine, an important pesticidal and pharmaceutical intermediate, was synthesized via catalytic cyclization and alcoholysis using diformylhydrazine and 1 ,2-dichlorobutane as starting reagents, with a total yield of 77% and purity of 97.7%.

六氢哒嗪是一种重要的农药和医药中间体，以二甲酰肼和1，2-二氯丁烷为主要原料，经催化环合和醇解2步反应合成六氢哒嗪，总收率77%，产品纯度97.7%。

Benzene homologues in air of workshops were preconcentrated with the activated charcoal sampling tube, and then desorbed with carbon disulfide.

用活性炭采样管富集车间空气中的苯系物，以二硫化碳为解吸剂，经毛细管柱GC MS选择离子法测定样品中苯系物，峰面积定

With sodium acetate as catalyst, inosine was esterified with acetic anhydride in the yield of 92% to give 2',3',5'-triacetyl inosine, which was treated with pyridine and phosphorus oxychloride to form a pyridinium solution, followed by performing an amination at 40℃ and 0.25~0.30 MPa to achieve adenosine in the yield of 67%.

肌苷在醋酸钠存在下与醋酸酐发生酯化反应以92%的收率得到2'，3'，5'-三乙酰肌苷，其化合物经吡啶和三氯氧磷处理形成吡啶盐溶液，未分离直接在40℃、0.25~0.30 MPa压力下进行氨解反应以67%产率制得腺苷。

A petrographic analysis combined with electron microprobe analysis and SEM shows that black opaque matters, whose composition is mostly of microcrystalline silicate and magnetite, are widely found running reticulately through mineral particles, crystals and cleavage cracks in association with metasomatic alteration in the mafic-ultramafic xenoliths and their host rocks.

经岩相学和电子探针及扫描电镜分析发现，伴随交代蚀变，寄主岩和各类镁铁-超镁铁质包体岩石中，普遍发育沿粒间和矿物晶体裂隙或解理纹贯入或穿插的黑色不透明物质，主要由微晶硅酸盐矿物和磁铁矿组成。

Photolysis of paramethyl benzyl manganese pentacarbonyl5Mn-p-CH2C6H4CH3 (4a)and paramethoxy benzyl manganese pentacarbonyl5Mn-p-CH2C6H4OCH3(4b) with 1-2 equivalents of R3SiH in C6H6 or C6D6 at 5℃ yields the silyl manganese pentacarbonyls5MnSiR3 [SiR3 = SiMe2Ph (1b), SiMePh2 (1c), SiPh3 (1d), SiHPh2 (1e), SiEt3 (1f), SiMe2tBu(1g), and SiMe2Et (1h) ] in moderate to high yields after chromatographic purification.

对甲基卞基五羰基锰5Mn-p-CH2C6H4CH3（4a）或对甲氧基五羰基锰5Mn-p-CH2C6H4OCH3（4b）与1-2当量R3SiH的C6H6 或C6D6溶液在5oC光解，经色谱纯化后得到中等或高收率硅烷基五羰基锰5MnSiR3［SiR3 = SiMe2Ph（1b），SiMePh2（1c），SiPh3（1d），SiHPh2（1e），SiEt3（1f），SiMe2tBu（1g），和SiMe2Et（1h）］。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。