Sequence distribution and microstructure in terminal carboxyl liquid butadiene-acrylonitrile copolymers were studied by ~ ( 18 ) C-NMR method to confirm the acrylonitrile residues mainly in BAB triads and we give quantitative data concerning their triads composition .

用~（13）C&NMR方法研究了 端 羧基丁二烯-丙烯腈液体共聚物的序列分布和微观结构。结果指出，丙烯腈单体主要以BAB三元组形式存在，并给出了定量数据。

In this sort of nanoparticle probes the long PEG chain provide steric stabilization to the probes so that they could survive in adverse conditions ; whereas its terminal carboxyl group could bind target entity which imparts detection / recognization functionality to the probes .

其中，聚乙二醇高分子链为探针空间稳定，使之可以耐受较苛性的条件；其 端 位 的 羧基可与抗体等靶向实体结合，从而赋予探针检测识别功能。

The inhibitor of apoptosis protein ( IAP ) family is a sort of important factors of inhibiting apoptosis which is characterized by the presence of one or more baculoviral IAP repeat domains at the amino terminal possessing or not a carboxyl terminal RING zinc-finger domain .

凋亡蛋白抑制因子家族是一类重要的抗细胞凋亡因子，该家族结构的共同特点是N端含有一个或多个串联的杆状病毒IAP重复序列，C 端含或不 含有一个环指结构。

A fiber-grade PBT was prepared from purified terephthalic acid by esterification . The effect of the performance of PBT on the spinnability was discussed by variance analysis . The influential factors on the terminal carboxyl group content of PBT were studied by orthogonal experiments .

采用精对苯二甲酸酯化法制备纤维级PBT，利用方差分析方法比较了PBT性能对可纺性的影响，并对PBT 端 羧基含量的影响因素进行了正交试验。

Myostatin gene coding region conserved among different species and its encoded protein precursor consists of three components : N terminal signal peptide N-terminal propeptide and biologically active carboxyl terminus .

Myostatin基因的编码区在不同物种间相对保守，其编码的蛋白前体由三部分组成：N 末端信号肽、N端前导肽和C末端成熟肽。

The results showed that the thermal properties and relative molecular weight distribution had no evident effect on the spinnability of PBT when the content of terminal carboxyl group had a profound effect .

结果表明，PBT的热性能和相对分子质量分布对可纺性影响不明显，而其 端 羧基含量影响显著。

Results The three dimensional structure of SED similar to that of other enterotoxin superantigens was composed of two domains : amino terminal domain and carboxyl terminal domain .

结果SED的空间结构与其它肠毒素超抗原相似，具有两个结构域：氨基 末端结构域和 羧基末端结构域。

The content of terminal carboxyl group can be controlled under the optimal conditions as followed : catalyst concentration 120 μ g / g esterification temperature 240 ℃ stirrer rotary speed of final condensation reactor 5 r / min.

控制PBT 端 羧基含量的最佳工艺为：催化剂浓度120μg／g，酯化温度240℃，终缩聚釜搅拌器转速5r／min。

The title photosensitive polyester resin with terminal double bonds has been synthesized through catalytic esterification of carboxyl terminated polyester with epichlorohydrin which is then terminated of acrylates by phase transfer reaction .

通过对 端 羧基聚酯与环氧氯丙烷的催化酯化，再经相转移反应在其两端接上丙烯酸酯，合成 端双键的光敏聚酯树脂。