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The results indicated that the highest NAIs concentration was distributed 5 cm far in front of the mask, and the NAIs concentration was decayed with the distance to the ionizer. The NAIs concentration also decayed on the mask surface due to electric neutralization.

首先探讨空气负离子在呼吸范围中的分布状况以及对四种生物气胶的控制效率分布，进而比较四种生物气胶控制效率的差异，最后探讨空气负离子稳定度对生物气胶控制效率的影响。

It was known that pyridine and Triton-x100 had a bad effect on the cell growth and lycopene production were studied. The results indicated that pyridine and triton-x100 inhibited cell growth and lycopene synthesis;β-ionone increased cell growth and lycopene synthesis when the concentration was 0.05 ml/L, but when the concentration became higher, there would be a decrease on the lycopene output; span-20 increased cell growth and lycopene synthesis effectively when the concentration reached 2.0ml/L, and the lycopene yield became 2.4×10~(-2) mg/L which was 3-fold than control.

研究了培养基中加入不同浓度的小分子效应物吡啶、Triton-x100、Span-20、β-紫罗酮、异烟肼对番茄红素产量的提高作用，结果显示培养基中加入很低浓度的吡啶(0.1ml／L)就会对菌体产生很强的毒害作用；triton-x100对类胡萝卜素的合成也有很强的抑制作用，试验的浓度为0.2ml／L到5ml／L，结果发现它对菌体的生长和番茄红素的合成都有抑制作用；β-紫罗酮在浓度为0.05ml／L时有很小的促进作用，而浓度升高就有了比较强的抑制效果；span-20在液体培养基中的加量为2.0ml／L时，对番茄红素的合成有很强的促进效果，产量达到了2.4×10~(-2)mg／L，比原始菌株产量提高了2倍，而浓度进一步增大就产生了很强的抑制效果。

The flume experiments of equilibrium concentration in water and slurry have been done to determine the function between the kinetic friction angle and internal friction angle. The equilibrium concentration of debris flow calculated by the function between the kinetic friction angle and internal friction angle is quite close the equilibrium concentration data of debris flow in field.

通过实验确定以颗粒浓度和颗粒最大体积浓度为主的动磨擦角与静磨擦角的函数关系式，以该关系式计算的泥石流运动的均衡浓度与泥石流原型资料很接近。

The testing results suggests that the increase of H2S concentration will raise the brittleness coefficient, leading to the decrease of corrosion resistance for either X70 base metals or welding joints. Meanwhile, the results reveals that effect of H2S concentration on X70 base metals and welding joints is different: the influence of H2S concentration on welding joints'SSCC is bigger than on base metals'SSCC.

揭示了随着硫化氢浓度的增加，国产X70管线钢及其焊接接头的脆性系数增加，抗腐蚀能力减弱；硫化氢浓度对国产X70管线钢母材和焊缝的SSCC性能有着不同程度的影响：在相同的试验条件下，焊缝的脆性系数显著大于母材的脆性系数，即焊缝较母材的SSCC敏感性大。

But 3H-TdR incorporation of HPMC cultured in the medium with high concentration glucose and EGF was increased significantly(P＜0.05)than in the medium with high concentration glucose and VitA. Conclusion EGF and Vit A do not effect the differentiation of HPMC,but can ameliorate the inhibitive effect on proliferation of HPMC by high concentration glucose.It may play an important role in the repair of damaged mesothelium and restoration of its function.

EGF和Vit A对腹膜间皮细胞的分化未显示出明显作用，但两者均可刺激细胞的增殖，特别是EGF可改善高浓度葡萄糖对腹膜间皮细胞的增殖抑制作用，这对CAPD患者损伤腹膜的再生修复以及促进其功能恢复可能有重要意义。

The parameters in natural gas advanced reburning zone that influence the efficiency of de-NOx were studied in detail considering the injection amount of natural gas, initial concentration of NO, excess ratio of oxygen, the injection amount of ammonia, concentration of H2O, concentration of sodium in the experimental equipment.

建立实验装置，对先进再燃区中各种影响参数：天然气喷入量、一氧化氮初浓度、过量氧气系数、喷氨量、水蒸汽量、钠浓度等对脱硝效率的影响进行深入实验研究。

Through analyses of the field tracer migration test results of tritium in unsaturated loess located in semi arid area, it is found that the longitudinal concentration distributions of 3H are symmetry at higher relative concentration and non symmetry at lower relative concentration.

通过氚在黄土包气带现场示踪试验结果的分析，发现3H纵向分布在相对浓度较大时是对称的，而相对浓度较小时则不对称。

The soil urease and invertase activity effected by Hg was investigated in different fertility soils. The results show that soil urease activity、maximum reaction velocity (Vmax、Vmax/Km) and reaction velocity constant k have remarkably negative correlation with Hg concentration so that these can be used as ecological indexes of soil polluted by Hg, Km changes a little indicating that the reaction mechanism of Hg and urease is nonreversible competitive restraint. Urease of low soil fertility is more damaged by Hg than that of high soil fertility, with severe pollution at Hg concentration of 6.00 and 14.79mg/kg respectively; while invertase is less sensitive to Hg than urease. Cultural time has less influence on the relationship of soil enzyme and Hg concentration.

对不同肥力土壤脲酶和转化酶活性受汞影响进行了研究，结果显示，土壤脲酶活性、最大反应速度Vmax 、Vmax/Km和反应速度常数k与汞浓度呈现显著或极显著负相关关系，表明其可作为土壤汞污染的生态指标；米氏常数Km则变化较小，表明汞与脲酶作用机理为不可逆竞争抑制；低肥力土壤脲酶比高肥力土壤脲酶受汞毒害作用更强，当汞浓度分别为6.00和14.79mg/kg时即达到严重污染；而转化酶对汞的敏感性较差；培养时间对土壤酶与汞浓度间关系影响较小。

However, the cell wall cultured at high concentration of Cu2+(10～200 mg/L) was clearly thickened and became multiple layers, and the pigment decreased and the pyrenoid became one or disappeared. Low concentration of Cu2+(0.01 mg/L, 0.1 mg/L) did not affect the growth of Chlorococcum sp., but the growth became slow and even negative beyond the concentration of 0.1 mg/L.

与对照BG11培养的绿球藻比较，0.01～1 mg/L Cu2+浓度下培养的绿球藻，细胞壁无明显增厚，色素没有多大变化，但蛋白核由一个变为多个；而在高浓度(10～200 mg/L Cu2+)下，细胞壁明显增厚为多层，色素减少，蛋白核减少并回复到1个或消失。

In the sprayed concentration scope of 0～450μmol/L, the level of thesubstances rasied as the sprayed concentration rasied, but as the concentration increased to600μmol/L, the substance level are not raised obviously higher, and some of them get a little lower.

在0～450μmol／L的喷施浓度范围内，上述物质的含量随着MeJA浓度的增加而增加，600μmol／L的处理与450μmol／L的处理相比，没有明显的提高，且大多数表现出含量略微降低。

The production moved off-Broadway to New York City, where she won the Joseph E. Calloway award for her performance, and was profiled in American Theater Magazine as one of ten young theater artists to watch.

生产提出过百老汇的新的纽约市，在那里她赢得了约瑟夫calloway奖，她的表现，并于异型在美国的战区杂志之一， 10战区的青年艺术家观赏。

It's a risk tradeoff, and I believe that adding test support code usually wins.

这是一个风险的权衡，我相信添加测试代码通常会占上风。