( 2 ) in high ca2 + krebs - henseleit ( k - h ) solution ( twice of normal concentration ) , duration of phasic contraction induced by fac was prolonged , which was longer than 60min , and the contractile amplitude was enhanced to 58 . 71 ? . 71 % ( p < 0 . 01 ) . after rings were incubated with nifedipine for 15min in order to block the l - type ca2 + channel , the iron induced contractile amplitude was inhibited 主动脉环用硝苯毗咤（ nifedpine ， nif ）孵育15min以阻断卜型钙通道后，再给予铁刺檄，与未加nif的同浓度细胞外钙离于组相比，铁所致的收缩幅度均明显降低（均p 0刀1 ） ，且高钙液中铁引起的相位性收缩幅度明显高于正常钙组。
In all those complexes , no matter which conformation ida assumes ( mer - or fac - style ) , the two 0 atoms of 1n2o are both from carboxylic hydroxyl . however , by comparing the bond length , we can find that o ( 4 ) and o ( 2 ) atom is from different group in this complex , 0 ( 4 ) atom from carboxylic hydroxyl , whereas , 0 ( 2 ) from carboxylic carboxide 值得注意的是：在这个双核配合物中，我们首次发现一种新颖的配位方式： ida上与金属离子配位的三齿螯合原子是亚氨n原子、一个羧基上的羟基o原子和另外一个羧基上的羰基o原子。
Based on the thorough investigation of the post - regulation and efficiency in multiple output switching - mode power supplies , an optimal combination topology for multiple output switching converter is presented in this thesis , which is consisted of forward converter with active clamp ( fac ) , synchronous rectification ( sr ) techniques and magnetic amplifier technique ( magamp ) 本文通过研究分析近年来多路输出开关电源辅助输出电压调节和提高效率的方案，面对开关电源朝着输出低电压大电流方向发展的趋势，提出多路输出开关电源新的拓扑优化组合模式? ?有源钳位正激变换器、同步整流技术、磁放大器。
2 . the general calculation method of the thermal system is extracted , a general mat - rix model is obtained after reserching , which based on the traditional calculation method , this model also ban be used for the most type of the heater , assistent equipment , the dir - ection of the water flow , auxiliary steam - water , external heat and so on , those above fac - tors can be done easily with computer 在这些计算方法基础上,研究出一种通用矩阵模型,该模型考虑到了加热器的各种类型、辅助设备、疏水走向以及辅助汽水和外热量等各种因素,易于计算机实现。 3 、本软件是sis系统的一个子模块,所以对sis系统和实时数据库进行了总结探讨。
Firstly , the thesis briefly introduces the key techniques relating to the power module , and points out that the magnetic - integration technique can improve the performance further . secondly , the characteristics of active - clamp forward converter are analyzed , and the notion of flux - coupling is proposed to derive the im - fac converter 论文首先简要介绍模块电源及主要的几种关键技术,指出模块电源中应用磁集成技术可进一步提高其性能;接着分析了有源箝位正激变换器的工作特点,提出磁通有效耦合的思路,并据此得出im - fac变换器。
