查询词典 cul-de-sac

To study the cytopathogenic effect of mycoplasma membrane.the pro- toplasmic membrane of the mycoplasma causing swine enzootic pneumo- nia was prepared by the repeated Freeze-thaw method or the osmotic shock method,and was then inoculated into the rabbit kidney primary tissue cultures for examining their biological activities.The experimental results were as follows:in the cultures inoculated with 25～50μg of membrane protein ,the cytopathogenic effect was considerable.in the cul- tures inoculated with ...

用低渗解体及反复冻融裂解的方法，制备了猪喘气病病原霉形体膜，将所制备的膜制品接种兔肾原代单层细胞，作生物学活性观察，在接种量按蛋白含量计算为25～50微克膜蛋白的细胞管中观察致细胞病变作用，在接种17.5微克膜蛋白的细胞管中作用不明显，接种6微克膜蛋白的细胞管无致细胞病变作用。

That paper deals with the studies on the distributiou of fucose in the frond of cul-tivated Laminaria japonica on the methods for isolating fucoidan from the alkali--coagu-lants--the waste residue from the comprehenesive utilization of Laminaria.

本工作研究了我国人工养殖的海带叶片中褐藻糖的分布，及海带综合利用工业的废料碱凝沉物中褐藻糖胶的存在量和分离条件。

But many are poi nti ng to another cul prit, energy, in particular the risi ng producti on of ethanol, a bio-fuel made from corn.

但是许多人认为是由于另外一个罪魁祸首，能源，尤其是乙醇的产量增加，而这是一种用玉米制造的生物燃料。

Archery is not only a valorous sports means, but also a tradi-tional sports culture that is provided with the functions of humanistic education and closely related to the folk cul-ture, ethical ideology and traditional philosophy of the ancient Chinese society as well as human thinking manners.

弓箭不仅仅是一种勇武的运动方式，而且是颇具人文教化功能，与中国古代社会的民俗文化、伦理思想、传统哲学以及人的思维方式息息相关的传统体育文化。

Molecular systematics on germplasm resources of oak silkworm, Antheraea pernyi, including genetic diversity, cul...

柞蚕业是我国的一项传统产业，在现代国民经济中仍然具有资源配置、经济和生态的合理性，有着广阔的发展前景。

From the ester n, the intermediate Ⅲwas produced by the Sonogashira coupling reaction with terminal alkynes under the co-catalysts of Pd2 and Cul. These final products of alkynyl benzamide derivatives IV were obtained by the cleavage of support with primary or second amines.

液相合成兼容了固相合成可快速简便地对产物进行分离纯化以及溶液相合成可在均相条件下进行反应和用常规手段对反应中间体进行分析检测的优点，用聚乙二醇4000作为可溶性聚合物支持体，通过醚键将[1，3，5]氯三嗪连接在PEG上制备成PEG支持的新型的可溶性聚合物试剂I。

Moreover,the selective oxidation of primary and secondary alcohols to corresponding carbonyl compounds with the multinuclear copper complexes Cul-Cu4 as catalysts have been conducted using TBHP and O_2/TEMPO,respectively.Among them,the copper complex Cu3 showed the best performance.On the performances of the two classes of oxidants,benzylic and heterocyclic alcohols could be effectively oxidized to carbonyl compounds.Specifically,the secondary alcohols could be effectively oxidized to ketones with excellent selectivity up to 100%in the presence of TBHP and the allylic alcohols could be effectively oxidized to aldehydes in the presence of O_2/TEMPO system.

实验结果还表明，在TBHP或O_2/TEMPO存在下，各配合物催化剂均能使各种取代芳香伯/仲醇以及杂环醇等以不同程度的转化率和选择性转化成相应的醛或酮，其中，配合物Cu3在O_2/TEMPO存在下可使苯甲醇和烯丙醇等以较高转化率和近100%的选择性转化成相应的醛，而对其它芳香醇和脂肪伯/仲醇等的催化性能则较差；在TBHP存在下，配合物Cu3则可使1-苯乙醇和其它仲醇以较高转化率和近100%的选择性转化为相应的酮，但对各类其它伯醇选择氧化的性能相对较差。

The writer gave a detailed description of Graminaceae tissue culture history, analysized the applied tendencies and prospects about Graminaceae tissue culture basic research and, on author's work basis, pointed out the major factor influencing cereals protoplast cul...

本文拟在评述近年来禾本利植物组织培养(主要指胚胎培养、器官培养、细胞培养和原生质体培养)的理论性研究和应用性研究的进展，并重点描述和讨沦在应用上较为成熟和有发展前景的几个领域的发展现状以及利用禾本科植物的组织培养技术而进行的基因转移技术的概况。

ARR4 responded to cytokinins at early time of seed germination, especially on the 6 d when seedlings were around true leaf initiation, while cyto- kinins induced ARR5 activation after 6 d of seed cul- tivation in light conditions, an obvious increase was on the 20 d when seedlings were around inflorescent shoot initiation.

在双组分信号传导途径中，从受体到反应调节基因传导磷酸基团的传导基因AHP4在幼苗发育的后期种子萌发后的第20和30天，应答植物体内增加的植物细胞分裂素，并且在花枝形成初期比较明显。

By using electron microscopy, three strain of baculoviruses were found in cul-tured Penaeus monodon with white spot syndrome , twe of them were present in nucleus of host cell, one of them was present in cytoplasm of host cell.

斑节对虾白斑病是白斑综合症杯状病毒所致，根据病毒形态结构大小和寄生部位分为3个种株，2个种株为细胞核杆状病毒，1个种株为细胞质杯状病毒。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了