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The porous TiO2 anatase nanometer thin films were prepared from alkoxide solutions containing polyethylene glycol by sol-gel method.

锐钛矿型多孔TiO2纳米薄膜可以从含聚乙二醇的钛酸盐溶胶前驱体中通过溶胶-凝胶法制备。

Anti-aging effects of non-lead and non-nickel antiager of 4,4 -Bis(alpha,alpha-dimethylbenzyl)diphenylamine(445)and 2-phenyl mercaptan parallelism imidazole were dealt with on the mechanical properties and vulcanizing performance of epichlorohydrin rubber.

研究了不含铅、镍重金属盐的防老剂445[4,4′-双(2,2-二甲基苄基)二苯胺]和2-硫醇基苯骈咪唑用于氯醚橡胶的防老化作用,考察了防老剂对ECO的力学性能和硫化特性等性能的影响。

We also studied the enantioselective conjugate addition of chalcone in the presents of chiral Ni2 aminoalcohol complexes.

我们还研究了手性氨基醇配体/镍盐催化的a,β-不饱和酮的不对称迈克尔加成反应,以及酰腙的不对称烯丙基化反应。

Cycloalkylation of diethyl malonate and ethyl cyanoacetate with alkyl halide was investigated in the presence of toluene.

以甲苯为溶剂及带水剂,用粉末K2CO3代替常规使用的乙醇钠,在季铵盐和聚乙二醇混合相转移催化剂的存在下,含有活泼氢的丙二酸二乙酯和氰乙酸乙酯与二卤代物进行缩合反应,得到相应的环化物。

DFA-PEG polyester was synthesized with DFA and PEG 400 at first, and then bysulfating DFA-PEG polyester with NH_2SO_3H or terminating DFA-EG polyester withrosin acid, two derivant, these are sulfated DFA-PEG polyester and terminateDFA-PEG polyester, were synthesized. The reaction conditions of synthesis wereoptimized by orthogonal experiments.The molecular weight of product was analyzed by GPC.

5以二聚脂肪酸和聚乙二醇400为原料,首先合成了DFA-PEG聚酯,再以DFA-PEG聚酯为衍生体,硫酸化或用松香封端,合成了两种DFA-PEG聚酯衍生物——DFA-PEG聚酯硫酸酯盐和松香酸封端DFA-PEG聚酯,通过正交试验,对合成的条件进行了优化。

RESULTS The optimized processing was: salt dosage of 2.5%,temperature of 135℃, frying time of 30 min. Pinoresinol diglucoside of crude Eucommia ulmoides was twice of processed product.

结果 杜仲的最佳炮制工艺:用盐量2.5%、温度135℃、时间30 min,杜仲生品中松脂醇二葡萄糖苷含量高于炮制品2倍以上。

OBJECTIVE To choosing pinoresinol diglucoside as quality control index, to screen and optimize the traditional stir-frying with salt-water processing techniqul of Eucommia ulmoides, and compared with crude Eucommia ulmoides.

目的 以松脂醇二葡萄糖苷的含量为质控指标,筛选优化传统盐炙杜仲的炮制工艺,并与生杜仲进行比较。

To synthesize the octreotide, Phe-Leu-Glu-Glu-Leu and C_(15)H_(31)-CO-Lys-Thr -Thr-Lys-Ser peptides, the strategies are as followings: Fmoc- group as protective group for α-NH_2; TBTU, DIEA and HOBt as coupling reagent; and ethanedithiol -phenol - thioanisole - H_2O - TFA ( 2.5:5:5:5:82.5 , V/V ) as cleaving solution.

采用Fmoc固相合成法,以苯并三哗四甲基脲四氟硼酸盐、二异丙基乙胺和1-羟基苯骈三氮唑为缩合剂;苯酚—乙二硫醇—苯甲硫醚—水—三氟乙酸(5:5:2.5:5:82.5,V/V)为切割试剂,合成了奥曲肽、Phe-Leu-Glu-Glu-Leu及C_(15)H_(31)-CO-Lys-Thr-Thr-Lys-Ser三种小分子多肽,并对奥曲肽的合成规模进行了放大。

One test is circulating test which tailing water is filtered and reused,another test is adding a little frother in water before adding coal sample.

结果表明,循环水中积聚的有机物主要是醇、酮、羧酸盐等含氧化合物;有机物积聚可提高精煤回收率,改变浮选的选择性

The highest lysine content of protein component was albumins, the next was glutelins, the lo west was hordein.

各组分中的赖氨酸,以盐溶蛋白中最高,谷蛋白中次之,醇溶蛋白中最低。

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My dream is to be a crazy growing tree and extend at the edge between the city and the forest.

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