周期率

By the concept of dimensions of labor market presented by authors, this paper analyzed the relations between industry life circle, labor market and turnover rate.

作者提出了劳动力市场维度的概念，并以此分析行业生命周期、劳动力市场与离职率之间的关系。

The result indicates that the output power oscillates and weakens along with increasing input power,and its oscillation period depends on the distance between the medium and beam focal point.Limiter′s limiting ability will decrease if waist size of the incident Gaussian beam and the aperture size increase.With a fixed input power scope,medium′s best limiting position will move towards the focal point if waist size of Gaussian beam and the aperture size increase,but the best limiting position will change a lot with different input power scopes.

结果表明：限幅器的出射功率随入射功率的增加衰减振荡，其振荡周期取决于介质相对于光束焦点的位置；限幅器的限幅能力随入射光束腰半径和光阑孔径的变大而减弱；入射功率范围固定，入射光束腰半径和光阑孔径增大时，介质的最佳限幅位置向入射光束的焦点靠近，但是在某些入射功率范围内会存在多个最佳限幅位置；光限幅器的箝位输出功率随光阑线性透过率的增加存在线性增加和非线性增加两个不同区域，实际应用中应在线性增加区域确定光阑孔径的大小。

Methods In vitro, human gastric cancer cell line SGC-7901 in log phase was intervened by As_2O_3 (final concentrations in order:1.0,5.0,10.0μmol/L) and 5-Fu (final concentration:50mg/L) respectively alone or in combination, and incubated for 24h、 48h、 72h. Blank group is set up. The cell apoptosis and cell cycle changes were observed by flow cytometry, and the expression of apoptosis-related gene Bcl-2 was analyzed by immunocytochemical method and absolute gray scales quantitative method.

将对数生长期的人胃癌细胞株SGC-7901(终浓度为2×10~5)经低、中、高三种浓度的As_2O(终浓度分别为1.0，5.0，10.0μmol/L)和5-Fu(终浓度50mg/L)单独及联合处理，设空白对照组，分别孵育24h、48h、72h后，收取标本采用流式细胞术测定细胞凋亡率及细胞周期变化；免疫组化绝对灰度定量分析检测凋亡抑制基因Bcl-2的表达。

And give out the length of business cycle by the corresponding relation of the tiptop of the rate of felling back and low-water mark of the economic growth rate.

并根据违约率的最高点与经济增长率的最低点的对应关系，得到经济周期的时间长度。

The relations of systemic resolution to subdivision number, grating period, magnifying power and tilt angle are theoretically discussed and experimentally checked on the Abbe comparator.

从理论上分析了系统分辨力与细分数、光栅周期、放大率和倾角等参数的关系，并通过实验在阿贝比长仪上进行了检验。

This technology was good with some merits such as a small quantity of menstruum, short cycle, high extraction yield.

该工艺具有溶剂用量较少，提取周期较短，提取率较高等特点。

The next phase will be to be trial offer depending on the cost for two or three cycles to an individual so the key milady pregnancy rate can begin to be respectable numbers.

下一阶段的提供依赖于两个或三个周期的成本，这要针对个体，这样主要的怀孕率才能开始提高。

Results: The values of parameters of the rate of biting human, the index of human-blood, the habbit of biting human, the ratio of multiparous mosquitoes, the gonotrophic cycle, the survival rate of every day, the expected life-span, the reproductive time of sporop...

结果：计算出中华按蚊叮人率、人血指数、叮人习性、经产蚊比率、生殖营养周期、每日存活率、预期寿命、孢子增殖时间、有传疟性蚊的比率，预期传疟寿命、媒介能量等参数值。

Beijing 100034,China(The School of Oncology,Beijing Institute for Cancer Research,Beijing Medical University,Beijing 100034,China)(The School of Oncology,Beijing Institute for Cancer Research,Beijing Medical University,Beijing 100034,China)Abstract : Objective In order to study the effects of ATP on U937 cells. Methods Cell culture,flow cytometry,HE staining,Nigrosine staining and electron microscopy were used.

应用ATP(0.23g/L)作用于人白血病细胞U937，(1)用白细胞计数器每日计数细胞和计算抑制率；(2)用流式细胞分析仪文献检测 ATP对U937细胞周期改变和凋亡的影响；(3)苏木精-伊红染色和电子显微镜文献检测凋亡小体的形成过程；(4)用苯胺黑染色文献检测凋亡小体的生命本性。

Results (1)ATP could inhibit the proliferation of U937 cells with inhibition rate over 43% after 48hour ATP treatment;(2)ATP treated U937 cells numbers increased obviously in G1 phase,and apoptosis peak appeared before G1 phase,apoptotic cell number was 3.4% for 24hour,and was 22.7% for 48hour of ATP treated U937 cells;(3) Nuclear chromatin condensed into sperical masses bound cytoplasma membrane formed apoptotic bodies which is shed from membrane surface into intercellular medium;(4) Apoptotic bodies were nigrosine staining negtive.

结果 (1)ATP对U937细胞的增殖有按摩明显的阻抑作用，加药48h后增殖的抑制率可达43%以上；(2)ATP处理的U937细胞周期发生改变，G1期细胞数按摩明显增多，ATP作用24h时G1期前出现亚二倍体峰——凋亡峰，凋亡细胞数为3.4%，作用48h时凋亡细胞数增多为22.7%；(3)ATP处理的U937细胞首先在核内染色质浓缩成半月形贴近核膜，逐渐向核膜外移动，进入胞浆内再移向质膜内外面，紧贴质膜外面再逐步脱离细胞体，进入细胞基质中，成为游离的凋亡小体。

The concept of equivalent rotationally rigidity is offered and the formula of rotationally rigidity is obtained.

主要做了如下几个方面的工作：对伸臂位于顶部的单层框架—筒体模型进行分析，提出了等效转动约束的概念和转动约束刚度的表达式。

Male cats normally do not need aftercare with the exception of the night after the anesthetic.

男猫通常不需要善后除了晚上的麻醉。