异构体

The direct incorporation of U-13C glucose was estimated by the intensity increase of m/z to F(F was parent fragment, and n was the carbon number in the fragment), while the total isotope incorporation from the added 13C could be calculated according to the abundance ratio increment summation from m/z (Fa+1) through (Fa was the fragment containing all original skeleton carbons, and T was the carbon number in the amino acid molecule). The 13C enrichment in the target compound was expressed as atom percentage excess, and that of D-amino acid needed to be corrected by the coefficient of hydrolysis-induced racemization. The 13C enrichment reflected the carbon turnover velocity of individual amino acid enantiomers, and was powerful to investigate the dynamics of soil amino acids.

外加葡萄糖直接合成氨基酸的比例可利用质谱碎片的相对强度变化来评价（n为质谱碎片F中含有的碳原子数目）；而源于葡萄糖的13C同位素在氨基酸分子中的富集程度是所有同位素峰相对强度变化的总和。13C在目标化合物中的富集比例用原子百分超评价，D氨－基酸的APE还需进一步利用水解诱导的外消旋化系数校正。13C在目标化合物中的富集程度可反映各氨基酸手性异构体的碳循环速率大小，是研究土壤氨基酸动态变化的有力工具。

The distribution of muscle fibers classified on the basis of their content of different myosin heavy chain isoforms was analysed in muscle samples from the digitorum superficialis flexor muscles of postnatal different ages of rats and rabbits by correlating standard actomyosin ATPase and succinic dehydrogenase SDHase histochemistry.

肌纤维的分类建立在它们所含有的不同肌球蛋白重链异构体基础上，对大鼠和家兔生后发育各年龄阶段趾浅屈肌采用标准的肌动球蛋白ATP酶和琥珀酸脱氢酶组织化学染色。

The distribution of muscle fibers classified on the basis of their content of different myosin heavy chain isoforms was analysedin muscle samples fromthe plantaris muscles of postnatal different ages of rats and rabbitsby correlating standard actomyosin ATPase and succinic dehydrogenase SDHase histochemistry.

应用建立在肌球蛋白重链异构体基础上的标准肌动球蛋白ATP酶和琥珀酸脱氢酶组织化学方法，分析大鼠和家兔出生后发育各年龄阶段跖肌纤维型分布。

It is an admixture of many kinds of many kinds of different structure body. It is easy to be absorbed in the human body.

它是多种异构体的混合物，在人体内更易被吸收。

Most vertebrate has 1~3 the Mx albumen isomer of the fixed position inside different cell, be located in surely commonly inside the nucleus or afterbirth is qualitative in.

大多数的脊椎动物有1~3个不同细胞内定位的Mx蛋白异构体，一般定位于核内或胞质中。

The qualitative analysis of three kinds of aldehyde isomers has been reported.

本文介绍了三种醛异构体的GC－ MS测定，并对某些质谱开裂产物的产生机理进行了解

In chapter two, we demonstrated the separation of five ephedrine alkaloid isomers in NACE.

论文第二章中，首次建立利用NACE分离五种麻黄碱类生物碱异构体的方法。

In the thesis alkylate and bridging resorcarenes were used as CGC SP. Their chromatographic character were studied.

将烷基化和桥联的间苯二酚杯芳烃用作气相色谱固定相，考察了色谱性能，对普通化合物表现出良好的分离能力，尤其是对芳香族位置异构体有良好的分离作用。

This method can be used to calculate the molar refraction of alkyne from molecular structure.

基团贡献法是根据分子中的基团计算分子性能的方法，具有适用范围广的特点，但对同分异构体的区分能力较差，对分子性能的计算结果误差较大。

A soft, steel-gray to black, hexagonally crystallized allotrope of carbon with a metallic luster and a greasy feel, used in lead pencils, lubricants, paints, and coatings, that is fabricated into a variety of forms such as molds, bricks, electrodes, crucibles, and rocket nozzles.

石墨一种质软、钢灰黑色、有金属光泽和滑腻感的碳的六方晶形的同素异构体，用于铅笔、滑润剂、颜料和涂层，可被制成多种形状，如模子、砖块、电极、坩埚和火箭发动机喷管

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。