查询词典 O

At last,a convergent and general protocol to marine natural product,as demonstrated by the enantioselective total synthesis of malyngamides O,P,Q,R, 5"-epi-Q and 5"-epi-R bearing terminal vinylic chloride structure,was developed in detail.E,(7S)-7-methoxytetradec-4-enoic acid was prepared using the above described Johnson-Clainsen rearrangement,the terminal vinyl chloride was constructed using Wittig reaction as key step,the pyrrolidone derivative was constructed using L-serine as natural chiral pool.Starting from the synthesis of malyngamides O and P to explore the general route,an aldol reaction of methyl acetate with the vinyl chloride part in the presence of LDA gave the skeleton of amine portion,followed by amidation with the fatty acid finished the synthesis of malyngamide P.

先以malyngamides O和P为试点探索通用合成路线，将乙酸甲酯和烯氯部分在LDA存在下进行aldol反应得到氨部分的骨架，再将手性不饱和脂肪酸和氨部分进行酰胺化反应完成了malyngamide P的合成，将P在碱性条件下进行烯醇甲基化反应完成了malyngamide O的全合成。

The phase diagram and the structure change of W/O→bi-continuous structure→virgulate liquid crystals→lamellar liquid crystals→bi-continuous structure→O/W studied by conductivity measurement were established for this system at 25℃.

在25℃时，作出SDS/正丁醇／正庚烷/水体系中SDS和正丁醇质量比为1：1时的拟三元相图，用电导率曲线讨论了该体系由W/O型→双连续型→棒状液晶→层状液晶→双连续型→O/W型的微观结构转变。

It may virtualize and integrate the I/O resources distributed on multiple computer nodes, present a uniform virtual I/O space for the upper guest operating system, carry out the uniform management and utilization of distributed I/O resources for the guest operating system.

当前大规模计算机技术的发展呈现两大趋势，scale-out和scale-up.scale-out系统I/O资源管理复杂、使用效率

We proposed that the high dispersed and nanosized extra-framework Fe〓O〓 in the zeolitic channel may be the active center of N〓O.

提出在该反应中，N〓O的吸附和活化中心可能是位于ZSM-5分子筛孔道内、高分散的Fe〓O〓。

Through the heat and chemical treatment, the content of C-O and C=O functional groups on the graphite felts surface was increased, resulting the increase of the reaction activity of vanadium redox.

通过化学处理和热处理工艺，改善了表面特性，提高了C—O和C=O基团的含量，增加了电极反应的活性区，降低电极反应的活化过电位。

Compared with K〓O, Na〓O has stronger fluxing and homogenizing effect.

Na〓O比K〓O具有更强的助熔和抑制分相作用。

When I look into your eyes I know you tell me lies It's never gonna be the same again You will always make me cry Yous tarted to pass me by It's never gonna be the same again Wo-o-woh wo-o-woh yeah...

当我从你眼睛里看出我知道那是你的谎言同样的事再也不会发生了你将使我心伤我在你眼中成了陌路我再也不会这样了 Wo-o-woh wo-o-woh yeah。。。

I need love come set me free Give me one chance don't walk on by When I look deep into your eyes When I look into your eyes I know you tell me lies It's never gonna be the same again You will always make me cry Yous tarted to pass me by It's never gonna be the same again Look into your eyes It's never gonna be the same again without you Want to free my heart It's never gonna be the same again without you Here we go wo-o-woh wo-o-woh yeah...

我需要被释放我的被来的爱给我一个机会不走在被之上当我进入你的眼睛之内看起来深当我调查你的眼睛我知道你告诉我谎言它从不正在去再是相同的你将会总是使我哭你酸的漠视我它从不正在去再是相同的调查你的眼睛它从不正在去没有你再是相同的想要释放我的心它从不正在去没有你再是相同的我们去在这里了 wo-o-woh 的 wo-o-woh 是的。。。

A colloidal sol of CP-Sb〓O〓 with high dispersion and fine particle size less than 200〓 is firstly prepared by the oxidation of antimony trioxide with hydrogen peroxide in aqueous solution only containing small amounts of inorganic phosphoric acid.

本文首次在单一使用少量无机物磷酸的稀溶液中，采用H〓O〓氧化Sb〓O〓方法制备出颗粒小于200〓的高度分散的CP-Sb〓O〓溶胶。

Methods The pyrogllol auto-oxidation was adopted to produce superoxide anion O(superscript - subscript 2; the system H2O2/Fe(superscript 2+) was used to produce hydroxy radical through Fenton reaction; and spectrophotometry was used to detect the clearing functions of drugs with different concentrations against O(superscript - subscript 2) and OH.

采用邻苯三酚自氧化法产生超氧阴离子自由基O(上标-下标 2，采用H2O2/Fe(上标 2+)体系通过Fenton反应产生羟自由基，用分光光度法分别测定不同浓度的药物对O(上标-下标 2)是和OH的清除作用。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。