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NGF had obvious cytotoxicity on these cell lines ,which shows to be dose-dependent, especially for MGC-803 and BEL-7404 ,their IC_(50) value at the 24~ hours are 49.9mg/L and 55.46mg/L ; Main features of apoptosis under fluorescent microscope include reduction in volume,nuclear chromatin condensation, intensification under jacinth fluorescence; The early apoptosis rate of pristine cells which detected by FCM increases with NGF dose increasing.

2NGF对4种人肿瘤细胞均有细胞毒性作用，且呈剂量依赖关系，尤其是对MGC-803和BEL-7404的抑制作用更强，作用24h的IC50值分别为49.9mg/L和55.46mg/L，荧光显微镜下可观察到MGC-803凋亡细胞的主要特点为：细胞体积缩小，染色质固缩，橘红色荧光增强；流式细胞仪检测到MGC-803细胞的早期凋亡率随NGF浓度的增高而增加，各浓度组与对照组的早期细胞凋亡率比较有明显差异(P＜0.01)。

By decreasing the concentration of (NH4)2SO4 from 3 g/L to 0.5 g/L in batch culture, the forming rate of jarosite was decreased by 50%, while Fe2+ oxidation rate was hardly affected.

结果显示：在三种方法中，降低(NH4)2SO4浓度是比较可行的一种方法，当(NH4)2SO4从3.0 g/L降低到0.5g/L，Fe2+氧化速率几乎没有受到影响，沉淀形成速率却减少了45%。

The results showed: among the three methods, decreasing the concentration (NH4)2SO4 was more feasible than two others. By decreasing the concentration of (NH4)2SO4 from 3 g/L to 0.5 g/L in batch culture, the forming rate of jarosite was decreased by 50%, while Fe2+ oxidation rate was hardly affected.

结果显示：在三种方法中，降低(NH4)2SO4浓度是比较可行的一种方法，当(NH4)2SO4从3.0 g/L降低到0.5g/L，Fe2+氧化速率几乎没有受到影响，沉淀形成速率却减少了45%。

The results showed: among the three methods, decreasing the concentration (NH4)2SO4 was more feasible than two others. By decreasing the concentration of (NH4)2SO4 from 3g/L to 0.5g/L in batch culture, the forming rate of jarosite was decreased by 50%, while Fe(superscript 2+) oxidation rate was hardly affected.

结果显示：在三种方法中，降低(NH4)2SO4浓度是比较可行的一种方法，当(NH4)2SO4从3.0g/L降低到0.5g/L，Fe(上标 2+)氧化速率几乎没有受到影响，沉淀形成速率却减少了45%。

It was found that the relative standard deviations were lower than 3%, the detection limits were 0.09~30.00 μg/L, the average recoveries of HBAs in Calyx Kaki were 93.3%~107.1% and the EF of HBAs at 5 mg/L was up to 107.6 fold.

该方法的精密度小于3%，检出限为0.09~30.00 μg/L，加标回收率为93.3%~107.1%，HBAs质量浓度为5 mg/L时的富集因子最高达107.6倍。

The results showed that the leaves differentiation mode of Kalanchoe tomentosa is special. The green globoids were induced only on MS medium with additional 1.5 mg/L 6-BA and 0.5 mg/L IBA.

试验结果表明：褐斑伽蓝叶片分化方式特殊，初代培养时外植体叶片分化困难，仅在附加6-BA（6－苄基腺嘌呤）1.5mg/L、IBA0.5mg/L的MS培养基上分化出绿色球状体。

The results showed that the leaves differentiation mode of Kalanchoe tomentosa is special. The green globoids were induced only on MS medium with additional 1.5 mg/L BA and 0.5 mg/L IBA.

试验结果表明：褐斑伽蓝叶片分化方式特殊，初代培养时外植体叶片分化困难，仅在附加BA 1.5 mg/L、IBA 0.5 mg/L的MS培养基上分化出绿色球状体。

Kepler's laws of Newton discovered the law of gravitation 10000 l ^ D has laid the foundation, then to the law of gravity, in turn, amended the third Kepler principle, namely, the ratio of 32 to strictly say no is a constant with the planets related to the quality of the l ^ D.

开普勒定律为牛顿发现万l^D有引力定律奠定了基础，而后，万有引力定律反过来又修正了开普勒第三定律，即比值32严格说不为常数而与行星l^D的质量有关。

It indicates that TBOPDA has better hydrolysis stability. At 50 ℃,when the acidity is 1 mol/L HNO_3, the effects of hydrolysis on distribution ratio are unchanged, when the acidity is 5 mol/L, the changes of distribution ratio are about 37%.

研究结果表明，该萃取剂在水溶液中具有较高的稳定性，当酸度为1mol/L，温度达到50℃时，铀的萃取性能没有变化；当酸度提高到5mol/L时，50℃条件下，铀的萃取分配比下降约37%。

Theorem 4 it is not the path of integral but the points and in the locus L that affects the line integral of locus L of foot point of the perpendicular line between the origin and the tangent line of the cylindrical spiral .several corollaries are derived from the theorems mentioned above.

定理4 势量场沿由坐标原点至圆柱螺线的切线所引垂线的垂足轨迹L的线积分与积分路径无关，只与轨迹L上的取的端点与有关。并由以上定理得到了几个推论。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。