氮化

However, in the simulation, we found that the equilibrium between growing radicals and nitroxyl radicals was a CPU-intensive and time-consuming process, therefore, a hybrid algorithm with an analytical expression for the exchange equilibrium and with a biased sampling technique for those elementary reactions of small probabilities was used to improve the stochastic algorithm.

并发现，链自由基与氮氧游离基之间的偶合-解离平衡消耗大量的运算时间，为此用偏倚抽样法和杂化运算对模拟进行了改进，得到了与原始方法基本一致的结果，从而大大缩短了运算时间。

The reactions include, organometallic reactions (grignard reaction, organolithium -zinc, and -copper chemistry ), metal catalyzed reactions, mannich reaction, nitration, hydrogenation, azidation, amino-protection reactions, organoalluminum catalyzed beckmann rearrangement, schmidt rearrangement, epoxidation, epoxide ring opening reactions, swern oxidation etc.

这些反应包括：有机金属反应(格利亚反应，有机锂，有机锌和有机铜反应)，金属催化反应堆(suzuki 反应， negish 反应)， mannish 反应，硝化反应，氢化反应，叠氮反应，各种基团的保护和脱保护反应，有机铝催化的贝克曼重排反应，斯密特重排反应，环氧化反应，环氧烷开环反应， swern 氧化反应等。

In a DMF solution of CuCl〓-ethanolamine-acetic acid (1: 2: 2), 27 formed a highly oxidized heterocyclic compound 2-hydroxymethyl-naphtho [1, 2-a] oxazole (30) by the carbon-nitrogen coupling and carbon-oxygen coupling with the ligand of ethanolamine, which brings a chance to develop a novel approach to this heterocyclic compound via one-pot reaction of phenols under mild condition.

在氯化铜—乙醇胺—乙酸（1：2：2）的DMF溶液中，27与配体乙醇胺发生碳氮偶合与碳氧偶合，生成深度氧化的杂环化合物：2-羟甲基-萘并[1，2-a]〓唑（30）。这可望为酚类一锅化直接转化为30及其类似物提供一种简便的新合成路线。

Starting from 4-androstenedione, three novel 3-oxo-4-aza-5-androstene-17-oxime derivatives 7, 8 and 9 were synthesized through oxidation ring cleavage, amination ring closure, oximation,and substitution .

以4雄烯二酮为起始原料，经过氧化开环、氨解闭环、肟化、取代等4-步反应，合成了3个新的3-羰基-4-氮杂-5-雄甾烯-17肟衍生物7、8和9，并用质谱、1HNMR、13CNMR等测试手段对目标化合物的结构进行了表征

In the study, we established the animal model of diabetic ED successfully. Modern medical methods such as routine lightscopy, pathology, transmission electroscopy, scanning electroscopy, fluorospectrophotometer and radio-immunity were employed. From the aspects of pathomorphism, cellular supermicrostucture and neurocrine, we observed the mixture's effect on status of the whole animal model and penial erection, the fast plasma glucose, protein non-enzyme gycosylation, nitric oxide synthase , testosterone. In contrast with control groups, the mixture could apparently slow down the corpus cavernosum penial, vascular, neural pathologic progression of the diabetic rats and had a better result than diabetic pill, invigorating yang and restoring normal capsule and amino guanidine.

通过实验研究，成功建立了糖尿病性阴茎勃起功能障碍动物模型，利用常规光镜病理、透射电镜、扫描电镜、荧光分光光度计、放射免疫法等现代医学研究方法，从病理形态学、细胞超微结构、神经内分泌学等方面，观察了降糖起萎合剂对模型动物整体状态和阴茎勃起情况、空腹血糖水平、蛋白非酶糖基化、一氧化氮合酶、睾酮等实验指标的影响，与对照组比较提示降糖起萎合剂能明显延缓大鼠基于DM基础上的阴茎海绵体及血管、神经病变的病理进程，其疗效优于消渴丸、壮阳复春灵胶囊及氨基胍。

A chemical vapor depositionmethod for depositing high quality conformal tantalum/tantalum nitridebilayer films from inorganic tantalum pentahalide(TaX5)precursors and nitrogen is described.

描述了一种从无机五卤化钽(TaX 5 )前体和氮气中沉积形成高质量的保形钽/钽氮化物双层膜的化学气相沉积法。

Methods Rabbits were infected with cercaria of S. japonicum percutaneously. The SP immunohistochemical technique was used to analyse the expression and localization of cNOS and iNOS in the rectums of normal and schistosoma rabbits.

采用腹部敷贴法建立血吸虫病兔模型，SP 焦虑免疫组化法分析结构型和诱导型一氧化氮合成酶在正常兔和血吸虫病兔直肠壁的表达与分布。

In order to find highly active pesticide, three series of 5--12-substituent-benzo phenanthridine derivatives were synthesized through the reaction of 2-methylbenzonitrile with dif-ferent aldehyde, and further dehydration with DDQ or N-methylation with NaH and CH3I, respectively.

为了寻找新的高活性农药，利用2-甲基苯甲腈与不同的醛反应，再通过2，3-二氯－5，6-二氰基－1，4-苯醌脱氢或NaH和CH3I氮甲基化，合成了3个系列共18个5-取代氨基－12-取代苯并菲啶衍生物，其中15个是未见文献报道的化合物。

Methods MTT Chromatography is adopted to test effects of 5-FU of different concentration and at different time of reaction over growth of Lovo cells; photomechanical method used to observe configuration and characteristics of apoptosis cells; FCM employed to test the percentage of apoptosis cells; electrophoresis and immunized grouping SP applied to test antigen Ki-67 of Lovo cells proliferation and expression of P53 and Fas genetic proteins in relation to apoptosis.

采用四甲基偶氮唑盐显色法，检测不同浓度5－FU作用不同时间对Lovo细胞生长所产生的不同影响；光镜观察凋亡细胞的形态特点；流式细胞术检测凋亡细胞百分率；琼脂凝胶电泳、免疫组化SP法检测 Lovo细胞增殖核抗原Ki－67及凋亡相关基因蛋白p53、Fas表达水平。

As the vitrification transition temperature of the phthalazine polyether-sulfone-ketone is high, the prepared ultrafiltration membrane has the performances of high temperature resistance and solvent-resistance.

二氮杂萘聚醚砜酮类聚合物的玻璃化转变温度高，所制备得到的超滤膜具有耐高温，耐溶剂性能。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。