查询词典 B-S

Objective: To study the role of CD5 + B cells in the pathogenic mechanism of hepatitis B.

摘 要 目的：研究CD5+B细胞在慢性乙型病毒性肝炎发病中的作用。

By employing two kinds of molecular marker of mitochondrial DNA, i. e. Cyt b and CoI gene, the sequences of 15 species representing 6 families from Passeriformes were compared. We analysed their sequences compose and characteristic with the sorft of MEG3.1, and built the phylogenetic trees in PAUP~*4.0. We deeply analysed the feasibility that CoI gene qua the marker to research the phylogenetic relationship of Passeriformes, and afford the academic proof for building the DNA barcoding of the birds.

本文分别以线粒体DNA的细胞色素b和CoI基因作为分子标记，对雀形目6科15种鸟类的细胞色素b基因全序列(1，143bp)和CoI基因部分序列(1，176bp)的组成特点及其系统发育树进行了比较分析，还探讨了CoI基因作为雀形目系统发育研究和构建鸟类物种DNA编码库的分子标记的可行性，旨在为DNA编码库的构建积累基础资料。

B deem the ball unplayable at Point B and drop a ball, under an additional penalty of one stroke, at Point A?

认定球在B点不可打，在加罚一杆的情况下从A点抛球吗？

In this paper,genetic diversity and differentiation of four populations of Plateau Pika from both banks of the Brahmaputra River were assessed with inter-simple sequence repeat and Cyt b gene sequences.

本实验应用ISSR分子标记和细胞色素b(Cytochrome b，Cytb)基因序列分析了雅鲁藏布江两岸高原鼠兔4个种群的遗传多样性和遗传分化。

The contents of Chla and Car were sensitive to low temperature stress, it seems that they were vulnerable to low temperature stress and partly decomposed. Relatively, the content of Chlb changed little. The ratio of Chla/b had positive linear correlation with temperature, which meant the photosynthetic ability of podocarpus fleuryi Hickel seedlings declined under winter low temperature stress.

叶片中叶绿素a和类胡萝卜素含量对低温胁迫反应较为敏感，容易遭受低温胁迫而部分地分解破坏，含量下降，而叶绿素b则相对变化较小，Chla／b值呈现与温度的线性正相关，显示了长叶竹柏幼苗在冬季低温胁迫下光合能力的下降情况。

The basic idea of the method is as follows: an algebraic theorem is used to avoid computing the composition and multiplication of B-spline basis function by Blossom and Polar form, and to reduce the computation by solving linear equations.

基本思想是：运用代数基本定理避免通常B样条基函数复合所采用的极形式以及非常烦琐复杂的开花运算，把B样条基函数的复合、乘积运算转化为求解线性方程组。

Methods:90patients were randomly divided in to 3groups.Group A was with puerarin.pur injection,Group B wit h puerarin.pur injection plus potass ium magnesium aspartate,Group C with ordinary dosage of digax in.

方法将CHF患者90例随机分为A、B、C三组，均以血管紧张素转换酶抑制剂、倍他乐克及利尿剂作为基础治疗，A组加葛根素注射液静滴，B组予葛根素注射液及门冬氨酸钾镁静滴，C组予地高辛口服。

U73122 and pyrrolidine dithiocarbamate (an inhibitor of NF-κB) were used to study the effect of PLCγ1 and NF-κB on cell-matrix adhesion.

吡咯二硫氨基甲酸酯用于研究NF-κB在结直肠癌细胞与基质黏附中的作用。

RESULTS:(1)NO production and iNOS mRNA expression induced by LPS and TNF α was blocked by pyrrolidine dithiocarbamate or N-acetylcysteine.(2)LPS and TNF α triggered the activation and translocation of NF κ B, and PDTC or NAC inhibited the activation of NF κ B induced by LPS and TNF α.

结果：抗氧化剂可阻断内皮细胞培养体系LPS和TNFα诱导的NO生成及iNOS mRNA的表达；LPS和TNFα可诱导大鼠肺微血管内皮细胞NFκB的激活并可被抗氧化剂阻断。

A method to construct an interpolation curve of rational quadratic B-spline G continuity is given.

给出二次有理B样条G2连续拼接的条件，提出一种二次有理B样条G2连续插值曲线的构造方法。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。