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The effects of many parameters, such as the amount of surfactant, airflow rates, pH, NaCl, ethanol and temperature on the solvent sublation were studied. Experimental results showed that a ratio of surfactant to Pb-dithizone complex (2∶1) was the most effective for the removal, with over 97.4% Pb removed from the aqueous solution in 40 min by solvent sublation, at the value of pH 12.6.The solvent sublation process followed first order kinetics. A characteristic parameter, apparent activation energy of attachment of the sublate to bubbles, was estimated at a value of 2.08 kJ/mol.

结果表明，当表面活性剂与硝酸铅物质的量之比为2∶1时，铅去除率达97.4％；体系去除率在pH值为12.6时最高；有机溶剂的影响不明显；少量的乙醇可提高其去除率和去除速率，但过多会产生抑制作用；适量的NaCl能提高体系去除率，但随着浓度的提高呈现下降趋势；去除速率随气流速率增加而增加，体系去除率随温度升高而递增；反应过程遵从一级动力学，表观活化能为2.08 kJ/mol。

ABSTRACT: Under V-Mo co- existed condition at about 016 mol/L acidityof sulfuric acid , using copper as catalyst and sulfocarbamide as

一〔1～4〕，但其通常采用2～3 mol/L 的显色酸度，显色液中钒量大于116 mg 时将严重干扰钼的测定。

Cells in the induction group were treated with L-DMEM consisting of 10% fetal calf serum and 10 μg/L basic fibroblast growth factor for 24 hours, then induced with L-DMEM consisting of 2% dimethyl sulphoxide and 200 μmol/L butyl hydroxy anisol for 1, 3 and 5 hours.

设立2组，诱导组用含10%胎牛血清和10 μg/L成纤维生长因子的L-DMEM培养基预诱导24 h后，再以含2%二甲基亚砜和200 μmol/L丁羟基茴香醚的L-DMEM无血清培养基诱导1，3，5 h。

METHODS: The breast cancer cell lines Bcap37 were treated with different concentrations of vinblatine dissolved in dimethyl sulphoxide or caspase-3 inhibitor (DEVD-CHO, 100 μmol/L) for 3 h. The changes of the proliferation were detected by MTT methods. The apoptosis was determined by observing the internucleosomal DNA cleavage and PI staining, and the proteins of pro-caspase-3 and IκΒ-α were detected by Western blotting methods.

用二甲基亚砜对照、100μmol/L caspase-3抑制剂预处理乳腺癌Bcap37细胞3h后，加入不同浓度的长春碱，以MTT法检测肿瘤细胞增殖能力，以细胞DNA片段分析及PI染色法检测肿瘤细胞凋亡，以蛋白免疫印迹法检测pro-caspase-3和IκΒ-α蛋白的变化。

The accurate heat of formation 1088 kJ·mol－1 of DAT in gas phase was obtained via designed isodesmic reaction in which the tetrazine ring and the azide group have been kept.

在不破坏四嗪环和叠氮基的原则下通过构建等键反应求得了DAT的精确生成热为1088 kJ·mol—1。

A Photolysis of 5＇-deoxyadenosylcobalamin in neutral aqueous solution and methylcobalamin in neutral and acid aqueous solution has been investigated using pulsed, time-resolved photoacoustic calorimetry in the temperature range of 10-30℃. The resultant enthalpy changes, namely CoC bond dissociation energies for the above cobalamins, 129±17, 163±21 and 176±23kJ/mol, respectively, are consistent with the values obtained by thermolytic kinetic method.

运用光声量热法研究10～30°C温度范围内辅酶〓在中性水溶液中和甲基钴胺素在酸性和中性水溶液中的光解反应，测定了其光解反应的焓变，即Co—C键离解能分别为129±17，163±21和176±23 kJ／mol，这些值和文献中用热分解动力学方法测得的值一致。

The observed enthalpy changes for above compounds, and measured cobalt-carbon bond dissociation energies, fall within the expected range of 80-180kJ/mol consistent with that from thermolytic kinetic and thermodynaminc equilibrium measurements.

值得注意的是，我们所得的〓的Co-C键离解能为176 kJ／mol，这是目前为止辅酶〓及其模型化合物中精确测定的Co—C键离解能最大值。

RESULTS: APC promoter 1A was methylated in NCI-H460 cells, and unmethylated in NCI-H446 and SPC-A1 cells. Hypermethylation was detected in all 5 CpG islands (687, 707, 714, 719, 726) of APC promoter 1A in NCI-H460 cells. The expression of APC in NCI-H460 cells was decreased by 26.04% of that in NCI-H446 cells and by 32.36% of that in SPCA1 cells. After treatment of 1, 5, 10, 15μmol/L 5-aza-dC, the expression of APC promoter 1A in NCI-H460 cells was enhanced by 4.59, 5.78, 9.58, 5.98 folds, respectively.

结果：SPC-A1和NCI-H446细胞APC甲基化阴性，NCI-H460细胞APC甲基化阳性；甲基化芯片检测Ncl-H460细胞在APC启动子1A 5个CpG位点均存在甲基化(687、707、714、719、726)，SPC-A1和NCI-H446甲基化阴性，荧光定量结果NCI-H460的APC转录较SPC-A1和NCI-H446有明显的下降，仅为二者平均的30.04%；经5-aza-dC脱甲基化作用后，NCI-H460细胞的APC表达增加了约5~10倍，其中10μmol/L浓度作用下，APC表达增加最多。

RESULTS: In the unstimulated state, exogenous spermine (1 mol/L) did not change resting ［Ca2+］i in the rat cardiomyocytes.

结果： 精胺（1 mol/L）对正常静息状态下大鼠心室肌［Ca2+］i无影响。

Strain EHA105 proved to be more infectious. Inclusion of acet osyringone (200μmol/L ) and a scorbatic

具有更强的侵染力；在感染液和共培养基中都加入乙酰丁香酮（200 mol/L）和抗坏血酸

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。