查询词典 guanyl

A process for reducing nitryl with unstable guanyl on para-position of benzene ring into azyl features that active metal reacts on organic acid and solvent at ordinary temp. and pressure to reduce N-(2 or 3-M, 5 or 6-M',4-nitrophenyl)-N',N'-dimethyl acetamidine into N-(2 or 3-m, 5 or 6-M', 4-aminophenyl)-N',N'-dimethyl acetamidine, where M=H,-R,-OR,-COOR (R=H, C1-C6); and M'=H,-R,-OR,-COOR (R=H, C1-C6). Its advantages include reduced by-reaction and high reducting rate up to 80%-95%.

本发明是将苯环上对位带有不稳定脒基的硝基还原为氨基的方法，采用活泼金属，如：锌或锡，与有机酸和适当的溶剂，在常温、常压下发生反应，将N－（2或3－M，5或6－M＇，4－硝基苯基）－N＇，N＇－二甲基乙脒还原为N－（2或3－M，5或6－M＇，4－氨基苯基）－N＇，N＇－二甲基乙脒，其中M＝H，－R，－OR，－COOR（R＝H，C1－C6），M＇＝H，－R，－OR，－COOR（R＝H，C1－C6），减少了副反应，使还原收率达到80％以上，最高可达95％以上，更适用于工业化生产。

As a new messenger factor,carbon monoxide can activate soluble guanyl cyclas,relax angio-smooth muscle,prevent platelet from aggregation and inhibit angio-smooth muscle cells proliferation,therefore it can maintain normal blood stream in coronary artery.

一氧化碳是一种新的信使因子，通过激活可溶性鸟苷酸环化酶，舒张血管平滑肌，抑制血小板聚集和抑制血管平滑肌细胞增殖，从而恢复冠状动脉的正常血流。

As a new messenger factor,carbon monoxide can activate soluble guanyl cyclas,relax angio-smooth muscle,prevent platelet from aggregation and inhibit angio-smooth muscle cells proliferation,therefore it can maintain normal blood stream in coronary artery.

一氧化碳是一种新的信使因子，通过激活可溶性鸟苷酸环化酶，舒张血管平滑肌，抑制血小板聚集和抑制血管平滑肌细胞增殖，从而恢复冠状动脉的正常血流。血红素氧合酶通过其抗动脉粥样硬化作用对冠状动脉起保护作用。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。