查询词典 fractions

Result That the survival fractions of fractional irradiation were higher than that of single irradiation for all of the three kinds of cells and it indicated that in 6 hours all of the three kinds of cells had high repair ability to sublethal damage.

结果 在0～6Gy的小剂量范围内，6h分次照射的细胞存活率明显高于单次照射。结论在6h之内，三种组织来源的肿瘤细胞都存在亚致死损伤修复。

By means of the fractions of the equation of the non一ideal constrained motion of the particle along the plane curve on the tangential direction and normal direction,the motion speed expression of the particle under this condition is derived,the constrained counter force is further gained,thus some non一ideal constraint problems are solved from the given angle.

通过质点沿平面曲线的非理想约束运动方程在切线和法线方向上的分式，导出质点这一条件下的运动速度表示式，并进一步求出其约束反力，从一定角度解决一些非理想约束问

This study shows that the remedial instruction designed with Tangram has a significant effect on correcting the students' wrong thinking about fractions.

本研究结果显示利用七巧板所设计的补救教学活动能有效改变学童之错误想法。

It's an important but daunting task, not least because it is hard to isolate sufficient amounts of well-defined tannin fractions to do rigorous experiments with.

这是一个重要但艰巨的任务，尤其是因为分离足够量的定义明确的单宁片段来做严格的实验是很困难的。

The effects of soil properties on the distributions of thorium fractions were investigated.

考察了土壤性质影响着钍的形态分布。

In this dissertation, firstly, the conditions of isolation and purification of specific toxin fractions produced by Exserohilum turcicum has been studied, and a high-efficient method has been established;secondly, the toxins were analysed by UV-Vis spectrophotometry;then the effect of specific toxin on death rate of corn leaves protoplast was studied by FDA as a tinct reagent;finally, using ANS as a probe and SDS-PAGE to study the membrane protein of the corn leaves with Htl gene. In a word, the aim of the research is to search some existent evidences of the toxin binding site on protoplasmic membrane, and provide proofs for nosogenesis of specific toxin in terms of cytology and the molecular biology.

本研究对玉米大斑病菌1号小种毒素的特异性组分进行分离，建立了高效的特异性毒素分离纯化方法，并对其进行了紫外波谱分析；用荧光素双醋酸酯染色法，测定了毒素特异性组分对原生质体死亡率的影响；进而用1-苯胺基-8-萘磺酸荧光探针标记法和SDS-PAGE电泳法对特异性毒素组分与Htl基因玉米细胞互作过程中的质膜蛋白进行了研究，旨在证明Htl基因玉米细胞质膜上存在特异性毒素组分结合蛋白，为从细胞和分子生物学角度阐明毒素的致病机理提供证据。

In total, 22 differential proteins were identified from 9 fractions.

研究结果表明，利用基于蛋白质水平的在线二维液相色谱分离技术找寻差异蛋白质，具有重现性好、自动化程度高等优点，可用于开展比较蛋白质组学的研究。

Two commercial biaxially oriented polypropylene resins, resin A and resin B, having different processing properties, were fractionated by preparative temperature rising elution fractionation , and the TREF fractions were further characterized. No long-chain branching was found in either resin A or B.

首次将高温GPC与动态激光光散射检测器联用，建立了流动型DLS和停流型DLS方法，测定聚合物的流体力学半径，研究聚合物在溶液中的形态和构象，拓展了GPC-TALLS/DLS联用仪的应用范围。

This thesis concerns convergence theorems and truncation error bounds for all kinds of continued fractions with applications to matrix function computation.

这扁论文讨论了各类连分式的收敛性与误差估计以及它在矩阵函数计算方面的一些应用。

30U、P30W、P30S1 and P30S2 were isolated from PIP30, and P60U、P60W、P60S1 and P60S2 were isolated from PIP60, and P1W、P1S1 and P1S2 were isolated from PIWE1-10, and P10W、P10S1 and P10S2 were isolated from PIWE10-100, and P100U、P100W、P100S1 and P100S2 were isolated from PIWE100 using DEAE Sepharose F. F. The proliferation rates of lymphocyte in vitro of each polysaccharide fractions obtained during the isolation and purification were detected in order to observe their immune activities. The results showed that crude polysaccharides both obtained from ethanol precipitation and ultrafiltrate had the promoting effects on lymphocyte proliferation in various degrees. P30U、P30W、P30S1、P30S2、P60U、P60W、P60S2、P1S1、P1S2、P10S1、P10S2、P100U、P100W、P100S1 and P100S2 had the promoting effects on lymphocyte proliferation.

IP30经阴离子交换层析(DEAE-Sepharose Fast Flow)得到分级多糖P30U、P30W、P30S1和P30S2，PIP60经阴离子交换层析得到分级多糖P60U、P60W、P60S1和P60S2，PIWE1-10经阴离子交换层析得到分级多糖P1W、P1S1和P1S2，PIWE10-100经阴离子交换层析得到分级多糖P10W、P10S1和P10S2，PIWE100经阴离子交换层析得到分级多糖P100U、P100W、P100S1和P100S2；采用体外刺激淋巴细胞增殖实验对离子柱分级分离的多糖进行活性实验表明P30U、P30W、P30S1、P30S2、P60U、P60W、P60S2、P1S1、P1S2、P10S1、P10S2、P100U、P100W、P100S1和P100S2是有活性的。P60W、P60S1、P1S1、P10S1和P100S1经凝胶柱(Sephacryl S系列材料)层析获得五个纯多糖组分P60w1、P60s1、P1SP1、P10SP1和P100SP1。

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。