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A with under strong base butyl Lithium, Wittig reaction was carried out, after cast off extremital 2,3-dihydropyran which protected hydroxy group, then 5,14-gadoleyl-1-ol was obtained.

a与在强碱正丁基锂的作用下进行Wittig反应,然后脱去末端的2,3-二氢吡喃保护基,得到5, 14-二十碳二烯醇。

In this work , 1,8-octodiol, the starting material, reacted with 40% hydrobromic acid to produce 8-bromooctan-1-ol, with the catalytic action of PPTs, its hydroxyl group was protected by 2,3-dihydropyran. Then it coupled with 1-heptaalkyne, by means of P-2 nickel as catalyst, stereoselectivity catalysis hydrogenated, with the catalytic action of acid to take off extremital 2, 3-dihydropyran which protected hydroxy group, then used PCC to oxidize alcohol into corresponding aldehyde.

以1,8-辛二醇为原料,与40%氢溴酸进行单溴代反应,得到8-溴-1-辛醇,在对甲苯磺酸吡啶盐的催化下与2,3-二氢吡喃反应,保护分子中的羟基,再与1-庚炔进行偶联,以P-2镍为催化剂立体选择性催化加氢,酸性条件下脱末端的2,3-二氢吡喃对羟基的保护,使用氯铬酸吡啶盐将醇氧化成醛。

Figure 6: Transverse CT image in a 24-year-old woman with Crohn ileocolitis shows thickening of terminal ileum and cecum with fibrofatty proliferation in right lower quadrant.

图6 为一位24对女性克罗恩回结肠炎横轴位CT图像,显示回肠末端及盲肠增厚,伴有周围纤维脂肪增值。

To investigate the presence of specific adhesion activity, the mrkD adhesin gene of the established type 3 fimbriae expression system was replaced respectively by each of the fimbrial adhesins. Transmission electron microscopy and western blot analysis revealed that most of the recombinant type 3 fimbriae expressed and assembled properly.

位於纤毛末端的黏附蛋白为决定细菌黏附专一性的主要因子,为了测试黏附蛋白的活性,我们进一步以过去建立的第三型纤毛表现系统为平台,将MrkD黏附蛋白基因分别置换为kpa、kpb、kpc、kpd、kpe、kpf或kpg的黏附蛋白基因,并经西方墨点法确认这些重组第三型纤毛的结构蛋白的表现和组装正常。

African elephants have two fingerlike features on the end of their trunk that they can use to grab small items. Asian elephants have one.

非洲象的鼻子末端有两个手指状的东西可以用于抓取微小的东西

Deletion analysis of this 3'-flanking region has revealed one region responsible for this negative control.

从deletion 的分析显示,3'末端的邻近区域有一个区域参与。

Gbchs2 was 1 238 bp long, containing 3'- flanking regions and encoding 304 amino acids.

结果表明,Gbchs2长1 238 bp,编码304个氨基酸并包含3'末端序列。

Once my hair was washed and 90 per cent dry, he sprayed on the water-based, keratin-rich magic lotion, then blow-dried it beautifully, all bouncy and flicky at the ends.

一旦我的头发是洗涤和干燥的百分之九十,他喷洒水基,角蛋白丰富的魔术乳液,然后吹干它漂亮,所有的快活和末端flicky。

Many people think that there is a gap between end consumers and producers/breeders in Chinese floricultural field. The end-consumers do not have enough knowledge on caring the pot plant they bought. Also, it still lacks the atmosphere of "consuming floriculture products and using them in daily life" in the Chinese market. Thus, many Chinese horticulture enterprises wish to have a governmental institute which specially works on introducing and promoting floricultural consumptions.

许多人认为中国花卉消费市场中,消费者和生产者之间的沟通渠道不顺畅,末端消费者无法获得足够照顾植物的知识,社会上也缺少日常生活使用花卉产品的气氛,所以很多园艺公司也期待政府机关成立特别的机关或单位来推广引荐花卉消费。

Any flowerless plant such as a fern or moss in which growth occurs only at the tip of the main stem.

仅生长在主茎末端的蕨类或苔藓类的任何无花植物。

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She gently rebuff ed him, but agreed that they could be friends

她婉言拒绝了,但同意作为朋友相处。

If in the penal farm, you were sure to be criticized.

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