甲基氰

Dimethylhexane-1,6-dimethyleurethane is the key material for preparation of 1,6-hexamethylene diisocyanate by non-phosgene route. Our work mainly focuses on the study of the catalytic performances of metal oxysalts and metal oxides for the ammonolysis of DMC to HDU-M. Experiment effect showed the ammonolysis was omposed by two steps, in which the first step was easier to occur than the second.

中文摘要六亚甲基-1，6-二氨基甲酸甲酯是非光气合成六亚甲基二异氰酸酯的关键原料，本文主要对金属含氧酸盐和金属氧化物这两类用于碳酸二甲酯胺解合成HDU-M 的催化剂进行了初步研究并优化了工艺条件。

Gel-type cross-linked polystyrene-isocyanuric acid resin has been obtained by reaction of chloromethylated polystyrene with isocyanuric acid under the existence of triethylamine.

由氯甲基化低交联聚苯乙烯和异氰尿酸在三乙胺作用下反应，制得了凝胶型交联聚苯乙烯-异氰尿酸树脂，测定了该树脂对苯酚和间苯二酚在不同温度下的吸附等温线，依据Clapeyron-Clausius方程从吸附等温线计算出了吸附热，从热力学的角度论证了树脂是基于氢键键合和疏水作用而吸附苯酚和间苯二酚的。

Benzyl isothiocyanate and phenethyl isothiocyanate, are derived isothiocyanates from cruciferous vegetable, including watercress, broccoli and cabbage.

苯甲基异硫氰酸酯和苯乙基异硫氰酸酯是来自於十字花科蔬菜的衍生物，常见的十字花科蔬菜包含了花椰菜、甘蓝菜、芥菜…等。

Benzyl isothiocyanate and phenethyl isothiocyanate induced apoptosis of DU-145 cells which also were confirmed by DAPI staining and DNA gel electrophoresis.

除此之外，苯甲基异硫氰酸酯和苯乙基异硫氰酸酯也会造成人类前列腺癌细胞株DU-145粒线体膜电位的改变，活性氧化物质和钙离子的释放以及造成DNA的损伤。

Western blotting show that benzyl isothiocyanate and phenethyl isothiocyanate treatment gradually decreased the level of anti-apoptotic proteins, but increased the level of pro-apoptotic proteins.

接著，由西方点墨法的结果发现苯甲基异硫氰酸酯和苯乙基异硫氰酸酯会造成人类前列腺癌细胞株DU-145凋亡蛋白的增加和Caspase活性的上升。

Besides, benzyl isothiocyanate and phenethyl isothiocyanate also decreased the levels of mitochondria membrane potential, induced reactive oxygen species and calcium ion production in examined DU-145 cells.

由结果显示，苯甲基异硫氰酸酯和苯乙基异硫氰酸酯确实会造成人类前列腺癌细胞株DU-145细胞周期停滞以及诱导细胞凋亡的产生。

Besides, benzyl isothiocyanate and phenethyl isothiocyanate increased caspase-3 activity. Therefore, benzyl isothiocyanate and phenethyl isothiocyanate induce apoptosis in human prostate cancer DU-145 cells.

由此可知，苯甲基异硫氰酸酯和苯乙基异硫氰酸酯会造成人类前列腺癌细胞株DU-145走向凋亡的命运，值得更进一步研究发展为抗癌药物。

The volatile components were separated and identified using GC-MS technique. RESULTS Seven ingredients were. isolated: 2-ethyl-hexyl-adipate (66.5%), 1-methoxy-4-(1-propenyl)benzene (12.5%), isopropyl isothiocyanate (6%), isobutylisothiocyanate (6%), 6-methyl-5-heptene-2-one (3.5%), benzaldehyde (1.4%), phenylacetaldehyde (0.8%).

结果 分离出7个成分，采用峰面积归一化法确定了各成分的相对含量，分别为66.5%双－2-乙基己基－己二酸、12.5%1-甲氧基－4-（1-丙烯基）苯、6%异硫氰酸异丙酯6%、6%异硫氰酸异丁酯、3.5%6-甲基－5-庚烯－2-酮、1.4%苯甲醛、0.8%苯乙醛。

The resin which was synthesized by the materials of hydroxy silicone oil , 1, 6-hexamethylene diisocyanate, tolylene diisocyanate, pentaerythritol triarylate and 2-hydroxy ethyl acrylate is able to cure rapidly at room temperature by UV.

本实验采用溶液聚合的方法，以端羟基硅油、甲苯二异氰酸酯、六亚甲基二异氰酸酯、丙烯酸—2—羟基乙酯和季戊四醇三丙烯酸酯为原料制备出了新型能够进行快速固化、高效的三官能度封端的光固化反应体系。

Pbo significantly synergizes fenvalerate、cypermethrin and methomyl against Xihua field resistant strain ofHelicoverpe armigera , TPP can somewhat synergize pyrethroids also.

对西华田间棉铃虫抗性种群，Pbo能显著地增加氰戊菊酯、氯氰菊酯、灭多威的毒力，大幅度地降低其致死中量，TPP对两种拟除虫菊酯杀虫剂也表现一定的增效作用；对甲基对硫磷、甲胺磷，无论是Pbo还是TPP其增效作用均十分有限。

Now, however, all children continue in "comprehensive" schools, and the eleven-plus determines which courses of study the child will follow.

然而现在，所有的孩子都要在综合学校继续学习，所以这次考试只是决定他们将要学习哪些课程。

Cultivatable land , and led to a general recognition that development must not be carried at the cost of agriculture .

城区的迅速扩大在很多情况下侵占了宝贵的可耕地，使人们普遍认识到发展不能以牺牲农业为代价。