官能团

词组短语

functional group

与官能团相关的网络例句 [注：此内容来源于网络，仅供参考]

The present invention relates to a process for rapid solution synthesis of a peptide, the process comprising repetitive cycles of steps-: a coupling step, using an excess of an activated carboxylic component to acylate an amino component, a quenching step in which a scavenger is used to remove residual activated carboxylic functions, wherein the scavenger may also be used for deprotection of the growing peptide, one or more aqueous extractions and optionally, a separate deprotection step, followed by one or more aqueous extractions, characterised in that the process comprises at least one step, referred to as step, in which an amine or a thiol comprising a free anion or a latent anion is used as a scavenger of residual activated carboxylic functions.

本发明涉及快速溶液合成肽的方法，该方法包括步骤-的重复循环：偶联步骤，使用过量的活化羧基成分酰化氨基成分，淬灭步骤，在该步骤中使用清除剂除去残余的活化羧基官能团，其中该清除剂还可以用于使生长中的肽去保护，一或多个水抽提和任选地，独立的去保护步骤，之后进行一或多次水抽提，其特征在于该方法包括至少一个步骤，称作步骤，在该步骤中包含自由阴离子或潜阴离子的胺或硫醇用作残余活化羧基官能团的清除剂。

The less the oxygen content and the more content of N element in the form of pyrrole-N were observed under stronger microwave power radiation. It was affirmed that the desulfurization capability of activated carbon could be greatly increased by microwave modification. According to the analysis on surface physical and chemical characteristics, a mechanism was concluded: Modified by microwave, functional groups begin to dissociate, alkalescency is enhanced, and surface oxygen content is reduced; the amount of active sites produced by dissociation of oxygen-containing groups increased, so did the pyrrole-N groups. Apparently, the activated energy of SO〓 adsorption decreased.

通过比较微波改性活性炭前后的吸附脱硫能力，结合它们的表面物理和化学性质的变化分析，确认微波改性活性炭的脱硫性能有显著提高，其作用机理在于微波处理后，活性炭表面微观形貌发生了较大的变化，化学基团发生分解，碱性特征增强，表面含氧量减少，以CO形式释出的含氧官能团分解后产生的活性部位和吡咯氮官能团数量增加，吸附SO〓的表观活化能降低。

By analyzing the changes of spectrum of the characteristic functional groups, the mechanism and process of synthesis reaction were discussed.

研究结果表明合成反应初期是一个物理化学反应过程；在反应过程中目标产物存在一个最低点区域，在特征官能团上"枝接"其他官能团时，应有效地避免该反应时间区域。

The results showed that the preoxidation of PPESK was a free radicals reaction,which was initiated by the decomposition of proton in aromatic ring and sulfone functional group and the removal of H_2O and SO_2.When the preoxidation temperature was above 460℃,the radical reaction was initiated by the decomposition of ketone functional group and the removal of CO_2.At last,the three-demensional cross-linking structure containing polyaromatic ether and biphenyl was formed.

研究表明，PPESK的预氧化过程是一个自由基反应过程，始终伴随着芳香环质子和砜基官能团的脱除引发的自由基交联反应，脱出H_2O与SO_2；当预氧化温度超过460℃后，随着反应的进行，由羰基官能团分解引发的自由基交联反应开始发生，脱出CO_2，并最终形成了含有大量聚芳醚和联苯结构的稳定的三维空间网状结构，进而完成PPESK由热塑性材料向热固性材料的转化。

As a preliminary work we prepared bisorganozinc halides directly from diiodide and zinc powder, and investigated their reaction with acyl chloride to give diketone, the reaction mechanism also proposed on the basis of experiments and the literatures.

第三章：带官能团的双有机卤化锌试剂和酰氯的反应研究本章首次探讨了带官能团的双有机卤化锌试剂的制备及其与芳香族酰氯的反应研究。

In this paper, from the viewpoint of latent functional group, application and development of heterocyclic compounds such as furan nucleus and thiofuran nucleus used in organic synthesis as pre-functional group are introduced.

本文从潜官能团角度概括介绍了呋喃环和噻吩环作为前官能团在有机合成中的应用及进展，展望了杂环作为前官能团在天然产物合成中的重要意义。

But, fusain is high in density and in HGI. It is usually concentrated in the coals of heavier and finer parts. Less oxygen functional groups exists in vitrain even if the total oxygen is high. However, more oxygen functional groups is found in fusain though total oxygen is low.

指出，镜煤的密度较低、HGI值较小、易富集于密度较氢的粗粒径煤中，尽管其总氧含量较高、但是含氧官能团的数量相对较低，丝炭的密度较大、HGI值较高、易富集于较重的细粒径煤中，其总氧含量尽管较低、但是含氧官能团的数量较高。

The results show that: the functional groups in coal are the function of coal rank , and the yields of CO 2, H 2O and CO are related to the content of carboxyl, hydroxyl and other oxygen containing groups such as ether groups in coal, and Tar and CH 4 are related to the aliphatic CH, the char yields to the aromatic CH.

借助化学分析和FTIR光谱分析对我国煤化程度不同的18 种煤中官能团的研究表明：煤中官能团含量与煤化程度有关；煤中羧基、羟基及醚键等其他含氧官能团的含量与热解生成物CO2、H2O 和CO 的产率有关，脂肪—CH 的含量与甲烷和焦油的产率相关联，芳香—CH 的含量与热解半焦产率有关。

Computer-simulated results show that the introduction of acetylene bridge,which electron cloud is columned,reduced the space block between molecular functional groups.In the acetylene-bridged system,the functional groups can keep relatively free rotation,which resulted in that the conjugated electronic cloud are influenced,and then influenced on the properties of the compounds.

计算模拟结果证明，炔桥的引入降低了星状分子的核单元官能团和臂单元官能团之间的空间位阻，使得官能团可以比较自由的旋转，从而对核-臂之间的电子云共轭产生影响，继而影响到该系列化合物体系的各种性能。

In this work, trially1 isocyanurate and trimethylolpropane trimethaerylate were used as a polyfunetional monomer of PP/PE blends, and the effects of radiation dosage, the kind and amount of polyfunetional monomer on the morphology and mechanical properties were studied.

本研究中采用三烯丙基异腈脲酸酯和三羟甲基丙烷三甲基丙烯酸酯为PP/PE共混体系的多官能团单体。研究了辐照剂量，多官能团单体种类和多官能团单体用量对共混物形态结构及力学性能的影响。

与官能团相关的网络解释 [注：此内容来源于网络，仅供参考]

characteristic functional group：特征官能团

characteristic function | 特征函数 | characteristic functional group | 特征官能团 | characteristic impedance | 特性阻抗,波阻抗

bifunctional extractant：双官能团萃取剂

bifunctional exchanger 双官能交换剂 | bifunctional extractant 双官能团萃取剂 | bifunctional monomer 双官能单体

difunctional extractant：双官能团萃取剂

diffusion time 扩散时间 | difunctional extractant 双官能团萃取剂 | digit 数(字),数(字)位

multimodal chromatography：多元层析[固相中含有多个官能团,改变流动相的条件可形成不同的层析机制]

multimerization 多聚化 | multimodal chromatography 多元层析[固相中含有多个官能团,改变流动相的条件可形成不同的层析机制] | multimodulation 多重调节

multimodal chromatography：多元层析[固相中含有多个官能团,改变流动相的条件可形成不

multimerization 多聚化 | multimodal chromatography 多元层析[固相中含有多个官能团,改变流动相的条件可形成不 | muramidase 溶菌酶,胞壁酸酶

multimodal chromatography：多元层析[固定相含有多个官能团,改变流动相的条件可形成不同的层析机制]

multimerization 多聚化 | multimodal chromatography 多元层析[固定相含有多个官能团,改变流动相的条件可形成不同的层析机制] | multimodulation 多重调制

PEG：聚乙二醇

本发明公开了制备携带羧基官能团水溶性非肽类聚合物,特别是羧酸官能化的聚(乙二醇)(PEG)聚合物的方法,以及这些方法的产物. 通常,使酯试剂R(C=O)OR′(其中R′为叔基并且R包括官能团X)与水溶性非肽类聚合物POLY-Y(其中Y与X反应形成共价键的官能团)反应形成聚合物的叔酯,

defunctionalization：脱官能团

defuelling 泄出存油;二次加注 | defunctionalization 脱官能团 | deg. 度

nitroso：亚硝基

当官能团是卤素(halogen)、硝基(nitro)、亚硝基(nitroso)时,采用这种方法来命名. 例如:3含多个相同官能团化合物的系统命名分子中含有两个或多个相同官能团时,命名应选官能团最多的长链为主链,然后根据主链的碳原子数称为某n醇(或某n醛、某n酮、某n酸等),

functional group：官能团

烃的衍生物(derivative of hydrocarbon)烃分子中的氢原子被其他原子或原子团取代而生成的一系列化合物;3.官能团(functional group)使烃的衍生物具有不同于相应烃的特殊性质的取代氢原子的其他原子或原子团;