metathesis

Clasp developed from Middle English clapse by metathesis.

clasp是由中古英语的clapse转变而来

Recent advances in ring closing metathesis (RCM) reaction, including olefin and enyne metathesis reaction are reviewed.

综述了近几年来关环复分解(RCM)反应的研究新进展,包括了烯烃、烯-炔的RCM反应。

Results:Acute phase of cerebral hemorrhage in TCM disease categeory has relation with median metathesis or encephaloma.

结果中线结构移位及脑疝出现情况与出血性中风病类诊断有密切关系。

Ring closing metathesis (RCM) of dienes to cycloalkene provides an important tool for C-C double bond formation catalyzed by metal carbene.

关环转换反应是形成碳碳双键的重要反应之一,即双烯化合物在金属碳烯催化下关环得到环烯类化合物。

Robert H.Grubbs and Richard R.Schrock made the crucial progress in the development of metathesis catalysts and their applications in this area.

美国的施罗克和格拉布二人继承和发展了肖万的烯烃复分解反应机制,研制出了有效、实用的催化剂。

The development of study on ring opening metathesis polymerization(ROMP) of norbornene(NBE) and its derivativesis reviewed with 30 references.

综述了降冰片烯(NBE)及其衍生物开环易位聚合(ROMP)的研究进展。

Sound change as a result of sound movement, known as metathesis, involves a reversal in position of two adjoining sound segments.

语音移动所导致的语音变化被称为语音变位,它涉及两个相邻音段互换位置。

The base principle,key technology,characteristic and progress on synthesis of ceramic powders by solid-state metathesis reactions are described.

本文扼要地介绍了固态复分解反应法制备陶瓷粉末的基本原理、关键技术、特点及其研究进展。

Objective To summarize the cause on infection and dislocation after the THA metathesis tl improve the effect lf the THA metathesis.

摘要目的通过对人工髋关置换术后的感染及脱位原因分析，总结经验，提高髋关节置换术后的疗效。

Abstract: Olefin metathesis opens up new industrial processes for the production of important olefins in the field of petrochemicals.

摘要: 烯烃交叉复分解反应作为石油化工领域一种重要过程，为各种单烯烃间的互相转化提供了一条有效的途径。

There were no metathesis of lymph node and tumor extension into the renal vein or vena cava pre-operative examination of all cases.

所有病例术前检查均未发现淋巴结转移及静脉癌栓形成。

In addition, syllable metathesis within a word prefers the interchange between a stressed syllable and an unstressed syllable.

而且，同一个字内常见一重一轻的音节互换，少有二个非重音节互换。

Metathesis has taken a route, not unusual in chemistry, from industry to the academic laboratory and then back out to industry.

复分解反应的研究路线是从工业到学术实验室，然后再应用到工业，这在化学上并不是个例外。

A general way to make molecules, such as that which the metathesis catalysts provide, can find many different applications.

一个构建分子的普通方法就可以获得很多不同的应用，就像复分解反应催化剂提供给我们的一样。

Methods: Patients were given normal medical comprdhensive therapy, combined with the artificial liver blood plasma metathesis technique.

方法所有病例均按常规给予内科综合治疗，并进行人工肝血浆置换术；

Abstract: The base principle,key technology,characteristic and progress on synthesis of ceramic powders by solid-state metathesis reactions are described.

文摘:本文扼要地介绍了固态复分解反应法制备陶瓷粉末的基本原理、关键技术、特点及其研究进展。

This paper reviews recent development of cyclic olifen ring-opening metathesis polymerization. The catalyst systems for the polymerization are described in detail.

本文综述了近年来环烯烃开环易位聚合研究的新进展,并对这些体系的催化剂作了详细的描述。

The synthesis of norbornene containing polyalicyclic compounds and their application on some polymerization, such as zigler Natta one, metathesis, etc, were reviewed.

综述了含降冰片烯多脂环化合物的合成及其在配位络合聚合、环烯烃开环聚合、（甲基）丙烯酸多脂环（氧烷基）酯与（甲基）丙烯酸多脂环烯（氧烷基）酯合成方面的应用；

In particular, the production of propylene and other important olefins via olefins metathesis reaction from n-butenes feedstock has received considerable attention.

特别是在利用正丁烯生产丙烯和其它重要单烯烃方面，复分解反应受到越来越多的重视。

This method uses hydroperoxide to oxide the bromide ion and hence facilitates the metathesis reaction between an alkyl-substitute imidazolium bromide and a strong acid.

这种方法是对通过复分解反应制备离子液体方法的改进，收率高，产品易纯化。

The chemical strategies for preparing magnetic iron oxide nanoparticles are reviewed and generalized in metathesis strategy and pyrolytic decomposition strategy in this paper.

本文对铁的氧化物磁性纳米颗粒的化学制备方法进行了综述，将其归结为复分解和热分解两种策略；

Methods:To observe 379 patients,basis on CT image to analyse the relationship of median metathesis or encephaloma and acute phase of cerebral hemorrhage in TCM disease categeory.

方法观察379例急性出血性中风患者CT征象,分析中线移位及脑疝出现情况与出血性中风病类之间的关系。

The latest advances of catalytic process of olefins metathesis were reviewed. The preparation of supported tungsten, supported molybdenum, and supported rhenium catalysts by Phillips Petroleum, IFP and Shell Co. were introduced.

综述了烯烃歧化催化工艺的进展,介绍了Phillips Petroleum、IFP、Shell公司制备载钨、载钼及载铼催化剂的方法。

The Nobel Prize for Chemistry for 2005 is shared by three chemists, YvesChauvin, Robert H Grubbs and Richard R Schrock, who have made fundamental discoveriesin olefin metathesis and its application in organic synthesis and polymerization.

法国科学家伊夫·肖万(Yves Chauvin)和美国科学家罗伯特·格拉布(Robert H Grubbs)、理查德·施罗克(Richard R Schrock)3人因为发展了烯烃复分解反应在有机合成中的应用,而共享了2005年度的诺贝尔化学奖。

Abstract : A series of succinate-derived macrocyclic amides 1 were synthezized using ring-closing metathesis in the key step.The substrate scope includes rings of 11 to 14 members.

摘要 ： 通过烯烃复分解闭环反应作为关键步骤合成了由丁二酸酯衍生的大环酰胺 1 ，包括11到14员环。

Polydicyclopentadiene (PDCPD) is a novel engineering material synthesized by reaction injection molding (RIM) method and such reaction mechanism is ring-opening metathesis polymerization.

聚双环戊二烯是采用反应注射成型工艺合成的一种性能优良的新型工程材料,是通过开环易位机理形成的聚合物。

With catalytic metathesis the synthesis routes are shorter,giving more product and fewer rest products.This leads to cleaner and more environmentally friendly production.The reaction has op...

新的合成过程更简单快捷,生产效率更高,副产品更少,产生的有害废物也更少,有利于保护环境,每天都惠及人类。

The ring-closing metathesis of olefin have been widely used in many kind of reactions for the synthesis of ring systems, especially in carbocycle, heterocycle systems and natural products.

本文综述了近年来金属复分解反应合成C=C键的最新研究进展。

Thanks to the work of these three, metathesis is now widely used in the synthesis of all manner of organic (carbon-based) compounds, from plastics to pharmaceuticals and herbicides.

正是由于这三位科学家的研究工作，现在，复分解反应广泛应用在所有种类有机（碳原子为基础）化合物的合成中，从塑料制品到医药品，甚至除草剂的合成无不如此。

Meanwhile,under this auto-controlling mode,the cerebrospinal metathesis could be implemented,the medicines could be supplied and exhausted from the outside of ventricle,so as to reduc...

实际应用研究结果表明,该系统运行可靠,使用方便。

Ru Carbene Complexes Catalyzed Olefin Metathesis

金属卡宾络合物催化的烯烃复分解反应

Small right oxter cut in cardiac valva metathesis

右腋下小切口在心脏瓣膜置换术中的应用

Ring opening metathesis polymerization

开环歧化聚合

Ring-opening metathesis polymerization (ROMP)

开环易位聚合

Ring-opening metathesis polymerization

开环易位聚合

Aortic valve metathesis of minimally invasive cut on sternum

胸骨横断微创切口主动脉瓣置换术

The Asset Metathesis Between Citigroup and Legg Mason

资产置换获双赢

Transition Metal-Catalyzed Alkyne Metathesis Reaction

过渡金属催化的炔烃复分解反应

Metathesis Reaction in Secondary School Chemistry Teaching

浅谈中学化学中的置换反应

Keywords olefine metathesis;ionic liquid;ruthenium catalyst;

烯烃复分解反应;离子液体;钌催化剂;

Keywords potassium sulfate metathesis zinc sediment;

硫酸钾复分解锌渣;

Keywords Ring opening metathesis polymerization;Dicyclopentadiene;

聚双环戊二烯;开环歧化聚合;

Keywords ethylene;2-butylenes;propylene;molybdenum-based catalyst;metathesis;

乙烯;2-丁烯;丙烯;钼基催化剂;歧化;

Keywords Ru;olefin metathesis;metal-carbene complex;catalytic reaction;

钌;烯烃复分解反应;金属卡宾络合物;催化反应;

Keywords Ring closing metathesis;Natural products;Metal carbene catalysts;

关环转换反应;天然产物;金属碳烯催化剂;

Keywords olefin metathesis;catalytic mechanism;metal carbene;application;

关键词烯烃复分解;催化机理;金属卡宾;应用;

Keywords Metathesis polymerization;Copolymerization;Poly（olefin co ester）s;

易位聚合;共聚合;烯烃共聚酯;

Keywords Ring opening metathesis polymerization;Polydicyclopentadiene;Tungsten;

开环歧化聚合;聚双环戊二烯;钨;

Keywords Cyclic olifen;Ring-opening metathesis polymerization;Catalyst systems;

环烯烃;开环易位聚合;催化体系;

Keywords ring opening metathesis polymerization;norbornene and its derivatives;

开环易位聚合;降冰片烯;降冰片烯衍生物;