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The system can endure the change of chloric ion concentration by increasing from 8 500 mg/L to 12 500 mg/L or decreasing from 8 500 mg/L to 4 500 mg/L, and it is more tolerant to the sudden increase than that of the sudden decrease of chloric ion concentration.

系统能够忍受氯离子浓度从8 500 mg/L直接升到12 500 mg/L和从8 500 mg/L直接降低到4 500 mg/L的变化，且抗氯离子浓度突然升高的能力比抗氯离子浓度突然降低的能力要强。

The chemical structure of the product was characterized by means of the melting point and IR. The results show that tetraethylammonium bromide which was used as a phase transfer catalyst in this reaction had optimization effect on the interfacial diffusive reaction of BTC and PNP. Higher concentration of sodium hydroxide, lower temperature and a higher dosage of BTC produced a small amount of 4-nitrophenyl chloroformate, while lower concentration of sodium hydroxide and a lower dosage of BTC made reaction incomplete, which affected the yield.

结果表明，在碳酸二（4-硝基苯基）酯合成中使用的相转移催化剂四乙基溴化铵对受界面扩散控制的BTC气与对硝基酚钠反应有良好的相转移催化效果；氢氧化钠质量分数较低时，酚钠盐向溶有BTC的油相扩散速度较小，较高时会产生氯甲酸对硝基苯酯；温度较低、BTC量较高时，会产生少量氯甲酸对硝基苯酯，BTC用量较低会使反应不完全，这些都影响着收率。

Results The IC50 of SPG-Rg3 was (155.7±0.71) mg·L-1,when the concentration of SPG-Rg3 was arranged from 37.5 to 600.0 mg·L-1,the growth inhibitory rate of MCF-7 cells was higher following the increase of its concentration,the cell growth was greatly inhibited compared with control group(P.05); cell cycle was changed,the cell number of S period increased compared with control group(P.01),the cell number of G2/M period decreased compared with control group(P.01),in experiment group there was an apoptotic apex before G1 apex,and the number of apoptotic cells increased; most of cell nuleus in SPG-Rg3 (150 mg·L-1)experiment group appeared yellow or chrysoidine fluorescence,contracted,beaded and crescent; the result of immunocellularchemical staining of caspase-8 indicated that caspase-8 protein had no expression in control group,but stronger expression in SPG-Rg3 group.

结果：SPG-Rg3 IC50为（155.70±0.71） mg·L-1，当SPG-Rg3浓度在37.5~600.0mg·L-1时，MCF-7细胞的生长抑制率随SPG-Rg3浓度的增加而增大，与对照组比较，细胞增殖受到明显抑制（P.05）；MCF-7细胞的生长周期也发生变化，S期细胞数增加，明显高于对照组（P.01，G2/M期细胞数则明显少于对照组（P.01；并且在G1峰前出现明显的凋亡峰，凋亡细胞数增加。

Concentration and distribution characteristics of PAHs in soil between a Cinnamomum camphora stand and a bare land were studied,and PAHs concentration levels in two kinds of soil were evaluated.

研究樟树林地和无林地土壤中PAHs的含量和分布特征，并对两种土地类型土壤中的PAHs含量水平进行评价。

The foam properties of four kinds of cleavable s-triazine fatty sulfonate surfactants with different length of alkyl chains were studied by improved Ross-Miles method. The effects of mass concentration, temperature and calcium ion concentration on their foam properties were discussed.

采用改进的Ross-Miles法研究了4种不同烷基链长的可断键均三嚓脂肪磺酸盐表面活性剂(OSEAT、DSEAT、TSEAT、HSEAT)的泡沫性能，考察了质量浓度、温度、Ca(上标 2+)浓度对它们泡沫性能的影响。

Study the activity of inducible nitric oxide synthase in the liver of rabbits infected with Eimeria stiedai, the concentration of nitric oxide in the serum、the coccidian oosysts per gram feces ,Score the pathologies according to anatomic structures of rabiits'livers and micoscopic pathological changes. So as to study the effect of exogenous NO and NOS of the rabbits infected with E.stiedai. The results showed that when the rabbits were infected with E.stiedai, the activity of iNOS in the liver and the concentration of NO in the serum gradually increased and they both reached the peak after 12 days in the control group , GTN and GSNO groups.

为了探讨外源性一氧化氮和一氧化氮合酶在家兔球虫感染时的作用，本试验以腹腔注射的途径给予感染斯氏艾美耳球虫的家兔NO供体硝酸甘油和亚硝基谷胱甘肽，对球虫感染家兔诱导型一氧化氮合酶活性、血清中NO的浓度、每克粪便的球虫卵囊数、肝的剖检和镜下病变及其病变计分进行了研究。

The influences of technic conditions of preparation, such as concentration of sodium silicate, concentration of vitriol, reaction temperature and cocurrent time were studied by orthogonal design experiment.

利用正交设计安排实验，采用并流法制备沉淀二氧化硅，研究实验制备工艺条件硅酸钠浓度、硫酸浓度、反应温度和并流时间对沉淀二氧化硅的BET比表面积的影响。

This paper researched cabbage of Cruciferae colewort by planting cabbage in soils which were polluted by cadmium of different concentration. We analyzed poison of cabbage which was polluted by cadmiums in different concentration by using OCT machine system to measure cabbage lamina and observing physical change of fabric of cabbage, and confirmed the characteristic of Cadmium circulation of supergenic geochemistry accordingly.

本文主要以十字花科芸苔属植物甘蓝为研究对象，通过在不同浓度的受镉离子污染的土壤中进行种植，观察甘蓝组织结构物理表征变化，并应用光学相干层析成像系统（Optical Coherence Tomography，OCT）对甘蓝叶片组织样本检测其变化情况，从而分析得出不同镉离子浓度对甘蓝的累积毒害作用以及镉的表生地球化学循环特点。

The paper has experimentally studied the explosive limit ed oxygen concentration and critical oxygen concentration of effect of coal mine combustive gases.

目前对可燃性气体的临界氧浓度的研究大多数都是对单元气体进行的，通过对煤矿可燃性气体的爆炸极限氧浓度和临界氧浓度进行的实验研究，对煤矿可燃性气体临界氧浓度的影响因素进行了分析，得出的数据及结论为煤矿瓦斯的安全防爆工作提供了理论基础。

Upon completion of examination, MOFCOM compressively assessed this concentration and determined the adverse impacts caused by this concentration as follows

审查工作结束后，商务部依法对此项集中进行了全面评估，确认集中将产生如下不利影响

Article 144 The Government of the Hong Kong Special Administrative Region shall maintain the policy previously practised in Hong Kong in respect of subventions for non-governmental organizations in fields such as education, medicine and health, culture, art, recreation, sports, social welfare and social

第一百四十四条香港特别行政区政府保持原在香港实行的对教育、医疗卫生、文化、艺术、康乐、体育、社会福利、社会工作等方面的民间团体机构的资助政策。原在香港各资助机构任职的人员均可根据原有制度继续受聘。

Small wonder, then, that the Chinese spend more in the shop than any other group of foreign visitors do .

这样的小惊喜，使中国顾客比任何国家的人消费得更多。