查询词典 isolated

Since quassins isolated from plants of Simarubaceae possess pesticide activity, we try to find pesticide activity compounds in Ailanthus fordii nooteboom .

常绿臭椿为苦木科臭椿属植物，由于前人从苦木科植物中分离得到的苦木素具有杀虫活性，因此我们希望从常绿臭椿中也能获得具有杀虫活性的化合物。

More active air, a matutinal distant cock, ecclesiastical clocks at various points, avine music, the isolated tread of an early wayfarer, the visible diffusion of the light of an invisible luminous body, the first golden limb of the resurgent sun perceptible low on the horizon.

406空气越发充满了勃勃生机：远处，公鸡在报晓，各座教堂的敲钟声，鸟类的音乐，早起的行人那孤零零的脚步声，看不见的光体所射出的看得见的光，复活了的太阳那低低地崭露在地平线上的、依稀可辨的最初一抹金晖。

Albinism related gene was isolated by mRNA differential display in this paper.

本研究采用mRNA差异显示方法分离褐牙鲆白化相关基因。

We investigated constituent of triterpenoid saponins ofAlbizzia, two new compounds together with two known compounds were isolated from Albizzia julibrissin Durazz. by using column chromatography (macroreticular resin, silica gel, Sephadex gel, reverse phase silica gel),preparative HPLC methods et al.On the basis of spectroscopic analysis, including IR,ESI-MS,~1H-NMR,~(13)C-NMR,HMBC,HMQC,~1H-~1HCOSY and chemical methods, the structure of two new compounds were identified as 3 - O -[β-D-xylopyranosyl(1→2)-β-D-fucopyranosyl (1→6)-β- D -2- deoxy - 2 - acetoamidoglucopyranosyl] -21-O-[(6S)-2- trans- 2,6-dimethyl - 6 - O-β- D - quinovopyranosyl -2,7- octadienoyl] - acacic acid- 28 - O-β-D-glucopyranosyl(1→3)[α-L-arabinofuranosyl(1→4)]-α-L-rhamnopyranosyl(1→2)-β-D-glucopyranoside acacic acid 3- O -β- D- glucopyranosy(1→3)-β- D- fucopyranosl(1→6) [β-D- xylopyranosyl (1→2)]-β-D-glucopyranoside ;two known compounds were acacic acid lactone 3- O -β-D- xylopyranosyl-(1→2)-β-D-fucopyranosl (1→6)- 2-deoxy -2 -acetoamido -β-D- glucopyranoside ; acacic acid lactone 3- O-β-D-xylopyranosyl(1→2)-α-L- arabinopyranosl (1→6)- 2- deoxy - 2- acetoamido -β-D-glucopyranoside . The study lays chemical foundation and chemical reference substance for enhancing quality standard of Albizzia julibrissin Durazz.

本研究论文在综述国内外对合欢属Albizzia三萜皂苷化学成分和药理作用研究进展的基础上，利用传统植化分离手段和现代分离技术，包括大孔树脂、硅胶、葡聚糖凝胶、反相硅胶等柱色谱，制备高效液相色谱法等技术从中药合欢皮中分离得到了4个化合物，其中，2个新化合物和2个己知化合物，并进一步通过现代分析技术IR，ESI-MS，~1H-NMR，~(13C-NMR，HMBC，HMQC，~1H-~1HCOSY等和化学方法鉴定了2个新化合物的结构分别是：3-O-[β-D-吡喃木糖基(1→2)-β-D-吡喃夫糖基(1→6)-β-D-2-去氧-2-乙酰氨基吡喃葡萄糖基]-21-O-[(6S)-2-反式-2，6-二甲基-6-O-β-D-吡喃鸡纳糖基-2，7-辛二烯酸基]-金合欢酸-28-O-α-L-呋喃阿拉伯糖基(1→4)[β-D-吡喃葡萄糖基(1→3)]-α-L-吡喃鼠李糖基(1→2)-β-D-吡喃葡萄糖苷，金合欢酸3-O-β-D-吡喃葡萄糖基(1→3)-β-D-吡喃夫糖基(1→6)[β-D-吡喃木糖基(1→2)]-β-D-吡喃葡萄糖苷；2个已知化合物结构分别是：金和欢酸内酯3-O-β-D-吡喃木糖基(1→2)-β-D-吡喃夫糖基(1→6)-β-D-2-去氧-2-乙酰氨基吡喃葡萄糖苷，金和欢酸内酯3-O-β-D-吡喃木糖基(1→2)-α-L-吡喃阿拉伯糖基(1→6)-β-D-2-去氧-2-乙酰氨基吡喃葡萄糖苷。

It obtains that the transport operator A has no complex eigenvalue s, and the spectrum of the transport operator A consists of finite real isolated eigenvalues which have a finite algebraic multiplicity in trip Pas.

本文研究了板几何中一类具各向异性、单能、均匀介质迁移算子A的谱，得出了该算子A在带域Pas中无复本征值和由有限个具有限代数重数的实离散本征值组成等结果。

It obtains that the transport operator A has no complex eigenvalue s,and the spectrum of the transport operator A consists of finite real isolated eigenvalues which have a finite algebraic multiplicity in trip Pas.

本文研究了板几何中一类具各向异性、连续能量、均匀介质的迁移算子的谱，得出了该算子A在带域Pas中无复本征值和由有限个具有限代数重数的实离散本征值组成等结果。

In chapter 2, the concept of ""isolated point"" is defined, whose influence on algebraic structure of rough set is demonstrated.

孤点不会位于任何粗糙集的边界上，它对粗糙集的代数结构产生特殊影响。

A novel rapid alkalinization factor gene of litchi was isolated from cDNA library of litchi pericarpGenBank accession No.

从已构建的荔枝果皮cDNA文库中挑取克隆测序，获得一条荔枝快速碱化因子基因（GenBank登录号：EU024484）。

It is reported that alkannin and shikonin isolated from the roots of Lithospermum erthyrorhizon or Alkanna tinctoria and their acylshikonin derivatives are potent selective inhibitors of DNA Topoisomerase Ⅰ.

文献报导紫草素和酰基紫草素等具有DNA拓扑异构酶Ⅰ的选择性抑制活性。本组曾合成得到少量环异紫草素（8），它对小鼠白血病P-388肿瘤细胞具有强烈的抑制作用。

Covalent modification of four isolated alkannin derivatives (alkannin, acetylalkannin,β,β dimethylacrylalkannin and β acetoxyisovalerylalkannin, respectively) on rabbit muscle latate dehydrogenase and yeast Alcohol Dehydrogenase has been studied.

为研究紫草萘醌类化合物的细胞毒性作用机制，从新疆软紫草根中分离出四种紫草萘醌类化合物β，β二甲基丙烯酰阿卡宁(1)，乙酰阿卡宁(2 )，β乙酰氧基异戊酰阿卡宁(3)和阿卡宁(4)。

It was just a normal day of school

那只是上学的普通一天

Which is a very good reference in this issue.

这是一个在这个问题上很好的参考。