查询词典 trans

The cis-9, trans-11-CLA was extracted with hexane-isopropanol,methylated with methanol-sodium methylate and cis-9,trans-11-CLA was separated and quantified using gas chromatography.

样品经正己烷-异丙醇提取、甲醇-甲醇钠甲酯化后，进行气相色谱分析；采用程序升温，以保留时间定性，外标法定量。

The 112 cases review analyses outpatient services are applied curing the clinical data of ureter disease patient through the trans-urethral ureteroscope, and among them cure in next section 97 cases in the middle and lower ureteral stone combination the going on nephralgia, blocking nature kidney, the ballistic lithotripsy etc through the trans-urethral ureteroscope, other is for diagnosis 15 cases URS.

回顾性分析112例急诊应用经尿道输尿管镜术治疗输尿管疾病患者的临床资料，其中经尿道输尿管镜术联合气压弹道碎石术治疗输尿管中下段结石合并持续性肾绞痛、梗阻性肾功能不全、感染等97例。

ABSTRACT Immobilized penicillin acylase (from E.coli) was used to catalyze 7 phenylacetamido 3 E propenyl cephalosporanic acid hydrolyzation into 7 amino 3 E propenyl cephalosporanic acid. Then, trans APRA was acylated with hydroxyethyl ester of 4 hydroxy D phenylglycine to obtain trans cefprozil.

以7 苯乙酰氨基 3 E 丙烯基 3 头孢菌素 4 羧酸为原料，在青霉素酰化酶作用下，首先酶法水解得到3 E 丙烯基 3 头孢菌素 4 羧酸，过滤固相酶，滤液调pH分离得到反式APRA固体；在青霉素酰化酶作用下，反式APRA再与对羟基苯甘氨酸乙二醇酯缩合，得到反式头孢丙烯；酶法合成所得的产品与进口反式头孢丙烯对照品一致。

We prepared the pyrethric acid II through four reactions: esterification, oxidation, decomposition, diesterification. And the original synthesis route of the pyrethric acidII was improved: the yield of oxidation of allyl rise through increasing the activity of Selenium dioxide; in the document, tert-butyl-trans -2, 2-dimethy1-3-(2"-methoxycarbony1-1"-propenyl)cyclopropanecarboxy late was synthesized from tert-butyl-trans-2,2-dimethyl-3-(2 -formyl-r -propenyl) cyclopropanecarboxylate with two steps, with low yield.

我们经过酯化，氧化，成双酯，热分解四步反应，成功地得到了第二菊酸，并改进了原第二菊酸的合成路线：通过改变二氧化硒的活性提高了烯丙甲基的氧化产率；将原路线中醛氧化成羧酸、羧酸酯化的两步反应改为醛和甲醇、二氧化锰等作用一步直接酯化的方法，减少了反应步骤，提高了总收率。

For the first time, we study the radio afterglow behavior during the trans-relativistic phase of the fireball shock wave. Considering the trans-relativistic shock dynamic and the synchrotron self-absorption effect of the relativistic electrons on the radio emission, we find that the dense medium model can not only explain the fast decline of the X-ray and optical afterglows of GRB980519, but also account for its radio afterglow quite well.

我们首次研究了致密介质情形下射电余辉在跨相对论阶段的行为，发现考虑到激波的跨相对论动力学和相对论电子的同步自吸收效应对射电辐射的影响，致密介质模型既可以解释GRB980519的快速衰减的X射线和光学余辉，也可以很好地解释其射电余辉的特点。

However, there are still several safety concerns about the use of a DNA vaccine, which include the possibility of integration into the host genome, adverse immunopathology, and anti-DNA autoantibody induction.Attempting to solve some of these problems, eukaryotic expression plasmids pTL-8/ AMA-1 and pTL-8/ AMA-1 which express trans-activator or reverse trans-activator, respectively, and AMA-1 gene of Plasmodium falciparum were constructed by using tetracycline regulable system.

首先构建了恶性疟原虫顶第四军医大学硕士学位论文端膜抗原1(AMA一1)基因和反式活化因子基因的真核表达质粒pTL一8/灿认一l和PTL一8/灿认一1，并大量制备这两种质粒及表达转录抑制子的质粒pUHS6一1。

Technique development, basic facilities improvement and cost decline make "globalization" communication possible. 4. Globalization of communication technique aggravates the "unfairness" of international communication and leads to its different layers, classes and unbalanced distribution. 5. The end of "cold war" deconstructs the opposite between the East and the West, but not ends the difference between the South and the North and the "civilization conflict". 6. The population redistribution makes the traditional nations and countries in the relevant areas unstable and influences the original national cultural identity. 7."Globalization" communication deepens the alertness of national elite intellectuals, which makes them strengthen their sense of mission to keep and guard the spiritual home of national traditional culture (including traditional belief, value, cultural pattern and so on) that will be possibly subverted and maliciously remade. 8. The combination of "direction" and "strategy", or the speciousness makes big trans-national media corporations sweep away all obstacles and occupy the markets in the developing countries, in which have appeared the phenomenon of "narrations of traditional cultures tending to similarities". 9."Global village": myth or reality? 10. The difference of culture and ideology often causes the different understanding and value judgement to the contents of trans-national communication.

第一部分将中国国家电视文化安全问题放到"全球化"的大背景中加以考量，分别从以下18个维度展开论述：1、全球化语境与我们的抉择；2、与"全球化"同样历史悠久的"国际传播"；3、技术的进步和相关基础设施的广泛建立并不断完善以及使用成本的持续下降，使得"全球化"传播成了可能；4、传播技术的全球化，加剧了国际传播的"不平等"，导致了国际传播的层级性和不均衡分布；5、"冷战"的终结解构了东西对立，但却并未终结南北差异和"文明的冲突"；6、人口的重新分布使得相关区域的传统意义上的民族国家面临潜在的不稳定，并有可能影响到原来各个国家已经定型的民族文化认同；7、"全球化"传播加深了民族国家精英知识分子的戒心，"守望民族传统文化的精神家园"的使命感使得他们开始关注核心的"传统文化"（具体包括传统的信仰、价值观、文化模式等）的有可能被颠覆或被恶意改造；8、"方向"与"策略"的有机结合，使得大型跨国传媒公司所向披靡，在发展中国家屡屡得手，很多国家出现了"祖母的同质化"现象；9、"地球村"：神话还是现实？

It was found that the allylide of sulfonium salt could react with aryl aldehydes to afford corresponding trans-epoxides in good yield with good trans/cis selectivity and excellent enantioselectivity.

根据反应条件对反应的影响并结合通过单晶测定的反式环氧化产物的绝对构型，我们提出了氢键起主导作用的手性诱导机制。

However, for the following reasons we are not optimistic about the study of wushu education in 30 years: the study of basic theories is not profound; the scale of the study of application theories is small; the research forms and methods are undiversified; the trans-discipline and trans-area researches are less than other disciplines.

但30年来的武术教育研究却不容乐观：基础理论研究不深入、应用理论研究规模小、研究范式与方法较单一、跨学科与跨领域的研究较其他学科少。

The main results and conclusions are as follows:The trans-1,4 content of polybutadiene increased from 50%to 89%along with the increasing of Al/Li ratio;the trans-1,4 content of polyisoprene increased from 24%to 46%as well as 3,4 content along with the increasing of Al/Li ratio;the microstructure of polystyrene was invariable and atactic.

主要研究结果及结论如下：随着Al/Li的增加，聚丁二烯的反式结构含量从50%增加到89%；聚异戊二烯的反式-1，4-结构含量从24%增加到46%，并且其3，4结构含量也有所增加；聚苯乙烯的微观结构基本没有变化，为无规聚苯乙烯。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。