藜芦

AIM In order to investigate whether resveratrol can be used as a kind of antiarrhythmic drug, the electrophysiological effect of resveratrol on pacemaker cells in sinoatrial node was studied.

目的为探讨白藜芦醇是否能成为抗心律失常药，研究了其对窦房结起搏细胞的电生理效应。

Dym M. Spermatogonial stem cells of the testis.

白藜芦醇的雌激素作用研究。

Objective To explore the optimal condition for synthesis of veratraldehyde by microwave radiation.

目的探讨微波辐射合成藜芦醛的适宜条件。

Methods Yields of veratraldehyde synthesized at radiation power of 180,260,340,420W with time of 2,3,4,5,6,7min were estimated respectively and compared with the yield of normal oil bath method.

分别以180，260，340，420 W的微波及2，3，4，5，6，7，8 min 的辐射时间观察藜芦醛的收率，并与传统油浴加热法进行比较。

Strongpoints of microwave radiation for synthesis of veratraldehyde were short timeconsuming, high yied and complete reacting.The optimal condition was power 260W,time 5min.

微波辐射法制备藜芦醛反应时间短、收率高、反应完全；微波辐射的最佳条件为功率260 W，时间5 min。

Methods The method of methylation and microwave synthesis method of microwave radiation Veratryl aldehydes, synthesis of these two methods compare the yield of the product and the fundamental nature, analyzing the advantages and disadvantages of both methods.

采用甲基化的方法和微波微波辐射的方法合成藜芦醛，比较这两种方法合成产物的产率及基本性质，分析两种方法的优劣。

Because benzyl alcohol is a common reagent and veratryl alcohol is a special and expensive one, it is very economic to replace veratryl with benzyl alcohol.

鉴于苯甲醇是常用的试剂，用它代替昂贵的藜芦醇在经济上有巨大的效益。

In the second part of this dissertation, the oxidation reaction of veratryl alcohol catalyzed by ligninase in the presence of surfactant have been first studied by spectrophotometric technique.

本论文的第二部分工作就是以藜芦醇的氧化反应为指示反应，首次就表面活性剂对木素过氧化物酶的头基效应以及非离子表面活性剂存在下酶促反应动力学和过氧化氢抑制动力学展开了研究。

It has wider pH ranges and higher temperature stability. The P6 LiP-catalyzed veratryl alcohol oxidase activity showed that the optimum pH at 25℃ was 4.0. The effect of temperature on enzyme activity was examined from 35℃ to 65℃ at optimum pH 4.0, with the optimum temperature at 45℃.

以藜芦醇为底物，在25℃，pH3.0的琥珀酸钠缓冲液中与底物反应时的K_m值为0.565mmol／L，Vmax为0.088mmol mg~(-1) protein min~(-1)；具有较宽的pH范围和温度稳定性，最适pH为4.0，最适温度为45℃。

Veratryl alcohol could stimulate the oxidation of PR catalyzed by LiP, especially at higher molar ratios of H2O2 to PR, however, PR inhibited the LiP catalyzed oxidation of VA.

藜芦醇对LiP催化氧化PR的反应有促进作用，尤其是当H202与PR的摩尔比较高时这种促进作用更为明显；然而PR对LiP催化氧化VA的反应却有抑制作用。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。