第二十二
- 与 第二十二 相关的网络例句 [注:此内容来源于网络,仅供参考]
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Article 37 shall be changed into Article 41, and paragraph 2 shall amended as:"It is prohibited to organize, force, induce, shelter or introduce a woman to engage in prostitution or to act indecently against women."
二十四、第三十七条改为第四十一条,第二款修改为:"禁止组织、强迫、引诱、容留、介绍妇女卖淫或者对妇女进行猥亵活动。"
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This work, concentrated on the asymmetric allylation of aldehydes controlled by different chiral auxiliaries prepared from rotational pure tartaric acid, can be divided into three parts.The first part aims to review the developments of chiral drugs and asymmetric synthesis, from which derived the present research topic backgrounds and works.Synthesis and applications of allylation from aldehydes are the second part of the thesis. By optimizing the reaction conditions, such as solvents, temperature, time and chiral auxiliaries like N,N\'-dibenzyl tartamide, N,N\'-p-dimethylphenyl tartamide, N,N\'-o-dimethylphenyl tartamide, N,N\'-o-dichlorophenyl tartamide, N,N\'-a-dinaphyl tartamide, N,N\'-dicyclohexyl tartamide and N,N\'-diphenyl tartamide, ideal experimenttal conditions are obtained according to HPLC monitoring, as well as the auxiliaries\' recoveries experiments. Starting from benzaldehyde and 3-bromopropaldehyde, N,N\'-dibenzyl tartamide is considered the best auxiliary in this reaction.
本文介绍了醛的不对称烯丙基化反应,以光学纯酒石酸为原料,研究了不同构型手性配体在醛的烯丙基化反应中的立体选择性,全文共分三部分十个章节:第一部分对当前手性药物和手性技术进行了概述,并由此展开了本文的研究背景和任务;第二部分为有机合成部分,对醛的不对称烯丙基化反应进行了深入探讨,以苯甲醛为原料对反应条件进行优化,在优化的反应条件下对制备的七种可回收手性酰胺配体(N-苄基酒石酸二酰胺、N-对甲苯基酒石酸二酰胺、N-邻甲苯基酒石酸二酰胺、N-邻氯苯基酒石酸二酰胺、N-a-萘基酒石酸二酰胺、N-环己基酒石酸二酰胺和N-苯基酒石酸二酰胺)进行筛选,优化配体回收实验条件,最终确定出N-苄基酒石酸二酰胺在苯甲醛的不对称烯丙基化反应中具有较大优越性,结晶回收的手性配体光学纯度保持不变。
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Citation needed In recent decades, most of the new borrowings or coinages have been technical or scientific terms; terms in everyday use are more likely to be derived from existing words (for example komputilo , from komputi ), or extending them to cover new meanings (for example muso , now also signifies a computer input device, as in English).
世界语共有二十八个字母,书写形式采用拉丁字母,一个字母只发一个音,每个字母的音值始终不变,也没有不发音的字母,其语音和书写完全一致,每个词的重音固定在倒数第二个音节上,学会了二十八个字母和掌握了拼音规则以后,就可以读出和写出任何一个单词。
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The first troop train from the North passed through Baltimore, Maryland, without incident. The second train was not so lucky. A mob blocked the rail line and threw stones at the train. Shots were fired. Four soldiers and twelve civilians were killed.
从北方来的第一列军列顺畅地通过马里兰州的巴尔的摩,然而,第二列军列就不那么幸运了,有一枚炸弹在铁路线上爆炸,而且火车遭受到了石块的袭击,枪击事件发生了,有四名士兵和十二名平民被害。
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Section 2 Time Charter Party 第二节定期租船合同 Article 129 A time charter party is a contract under which the shipowner provides a designated manned ship to the charterer, and the charterer employs the ship during the contractual period for the agreed service against payment of hire.
第一百二十九条定期租船合同,是指船舶出租人向承租人提供约定的由出租人配备船员的船舶,由承租人在约定的期间内按照约定的用途使用,并支付租金的合同。
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I was now recover'd from my Surprize, and began to look round me, when I found the Cave was but very small, that is to say, it might be about twelve Foot over, but in no manner of Shape, either round or square, no Hands having ever been employ'd in making it, but those of meer Nature: I observ'd also, that there was a Place at the farther Side of it, that went in farther, but was so low, that it requir'd me to creep upon my Hands and Knees to go into it, and whither I went I knew not; so having no Candle, I gave it over for some Time; but resolv'd to come again the next Day, provided with Candles, and a Tinder-box, which I had made of the Lock of one of the Muskets, with some wild-fire in the Pan.
这时,我从惊恐中恢复过来,开始察看周围的情况。我发现洞不太大,周围不过十二英尺,但这完全是一个天然的洞穴,既不方,也不圆,不成什么形状,没有任何人工斧凿的痕迹。我又发现,在洞的尽头,还有一个更深的地方,但很低,只能俯下身子爬进去。至于这洞通向何处,我当然不得而知。当时我手头没有蜡烛,只好暂时不进去,但我决定第二天带上蜡烛和火绒盒进去。那火绒盒我是用一支短枪上的枪机做成的。另外,我还得带一盘火种。
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Article 32 a The Legislature shall assemble in regular session once a year on the second working Monday in January.
第三十二条: a 立法机关在每年一月份的第二个星期一定期召开会议。
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MethodsCSF was extracted from patients with GBS and controls, and proteins were precipitated with icecold acetone. Isoelectric focusing electrophoresis was employed as the first dimension and sodium dodecylsulfatepolyacrylamide gel electrophoresis was employed as the second dimension.
方法分别取GBS疾病组和对照组的新鲜脑脊液,冰丙酮沉淀法提取总蛋白,进行第一向等电聚焦电泳和第二向十二烷基磺酸钠聚丙烯酰胺凝胶电泳分离蛋白质组,Image Master 2D图像分析软件对分析胶进行比较分析,识别差异表达明显的蛋白质点。
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A in writings of the first and second centuries, eg, Justin's letter to the Churches of Lyons and Vienne, Irenaeus, Clement of Alexandria, Papias, Polycarp, Clement of Rome, the "Didache", the "Pastor" of Hermas, and others.
在著作中第一个和第二个百年,如贾斯汀的信教会的里昂和维埃纳依来,克莱门特的亚历山德里亚,帕皮亚,波利卡普,克莱门特的罗马,&十二使徒遗训&中,&牧师&的书,和其他人。
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Though his ideas were criticized by Pope Pius XII, they became extremely influential at the Second Vatican Council, where he served as an advisor.
尽管拉纳的思想遭到教宗庇护十二世的批评,但他在第二次梵蒂冈大公会议中仍极具影响力,并且担任该会议的顾问。
- 推荐网络例句
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The split between the two groups can hardly be papered over.
这两个团体间的分歧难以掩饰。
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This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.
这种做法不仅鼓励了更多的反应,而且减少跟风的可能性。
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The new PS20 solar power tower collected sunlight through mirrors known as "heliostats" to produce steam that is converted into electricity by a turbine in Sanlucar la Mayor, Spain, Wednesday.
聚光:照片上是建在西班牙桑路卡拉马尤城的一座新型PS20塔式太阳能电站。被称为&日光反射装置&的镜子将太阳光反射到主塔,然后用聚集的热量产生蒸汽进而通过涡轮机转化为电力