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6Fe_2O_3. 1.81 (CaO.2Fe_2O_3) The apparent activation energy of barite decomposition in air is 119.9 kJ/mol and the order of reaction is 1.3—1.4 obtained by kinetical calculation.

动力学计算表明，在空气中重晶石分解的表观活化能E~*=119.9kJ/mol，反应级数n=1.3—1.4。

FT-Raman, normal Raman spectra of artemisinin in solid state and surface-enhanced Raman scattering spectra of 1 ?10-5 mol/L artemisinin aqueous solution were recorded. 1756 Cm-1 hexat. lactonic ring vibration which was shown strong in FT-Raman and normal Raman spectra disappeared in SERS spectra. This phenomenon appeared to result from the broken of lactonic ring.

本文对固态青蒿素的FT-Raman光谱和普通Raman光谱以及低浓度(1×10^-^5mol/L)青蒿素水溶液的表面增强Raman散射光谱进行了检测，着重观察了1756cm^-^1六元内酯环振动谱带，发现其在FT-Raman和普通Raman光谱中表现为强振动，而在SERS光谱中此振动谱带消失，说明分子内酯环发生了破裂。

Results showed that when AA amount was more than 0.04 mol,anomalous particles were generated and heterogeneity in the formation of anomalous structure was observed in the treated latices With the increase of amounts of AA and the decrease of the mass ratio of MMA to EA,the percentage of anomalous particles increased,and their volume expansion increased and then decreased.

结果表明，当AA含量大于0.04mol时，胶乳中开始出现异型结构粒子，随着AA用量的增加和MMA/EA质量比的减小，异型粒子在胶乳中所占比例增加，胶粒体积先增大后减小。

Five new bacterial diseases of Ligularia fischeri, Vigna angularis , Brassica juncea var.japonica, Aconitum coreanum and Silybum marianum in Jilin province were firstly reported in the world; and their sympotoms of the diseases were described in detail. According to the configuration of the pathogens observed by electrical microscope, Gram staination, pathogenicity, cultural characters, physiological and biochemical characters, as well as G+C mol%, the pathogens were identified respectively .

首次报道了马蹄叶腐烂病、红小豆溃疡病、黄花乌头顶枯病、江户菜软腐病和水飞蓟软腐病在吉林省的发生，详细描述了该五种病害症状及危害情况；通过对分离的病原菌的电镜形态观察、革兰氏染色、致病性、培养性状、生理生化性状、G+C mol％等方面的测定，依据《Bergey's Manual of determinative Bacteriology》9th ed相关部分，初步确定了其病原菌的分类地位并对病原菌进行了室内药剂筛选。

Whereas, at the second stage H-transfer from indole to malonate occurs with the formation of the new C—H bond, the energy barriers calculated for this step are 99.2 and 115.1 kJ/mol for the R - and S -configuration product, respectively.

其中第一阶段由复合物经过渡态TS1生成中间体IM，是C—C键的形成阶段，该阶段的活化能垒较后一阶段要大，是该反应的决速步骤；第二阶段由IM经过渡态TS2生成产物，完成H迁移和C—H键的形成。

The different Melilotus varieties under the condition of the low content (1ower than 0.10 mol/L) salt stress showed certain degree of adaptability, but with the increase of salt content, the inhibitory concentration level also increased.

各草木樨品种对低浓度(≤0.10 mol/L)盐胁迫有一定的适应性，但随盐浓度的增加其受抑制程度加剧。

In different NaCl salt stress solution concentrations (which were 0.05, 0.1, 0.15, 0.2, 0.25, 0.3, 0.35 mol/L), the seven salt tolerance of Melilotus varieties of the germination percentage was calculated, including the relative germination percentage, seed potentiality, germination index, the sprouts length, the relative sprouts length and the salt index.

以7个耐盐草木樨品种种子为材料，用不同浓度NaCl（NaCl浓度分别为0.05， 0.10， 0.15， 0.20， 0.25， 0.30和0.35 mol/L）胁迫处理后，测算其种子的发芽率、相对发芽率、发芽势、发芽指数、胚芽长度、相对胚芽长度和耐盐指数。

The results showed that at the concentration of 10-8 mol/L,diethylstilbestrol facilitated fetal rat mesencephalic NSCs proliferation and differentiation, and increased neuronal differentiation.

结果显示：己烯雌酚浓度在10-8mol/L时中脑NSCs增殖、分化明显，并能提高神经元的分化率。

Fluid inclusion studies of ten mesothermal gold deposits in Tongbo-Dabie area show that the ore-forming fluids are of the NaCl-CO2-H2O system with low salinity (6 wt%NaCl) and ricb CO2 (10 mol%).

中文摘要：通过对桐柏-大别地区10个中温热液金矿床的流体包裹体研究，确定成矿流体属于低盐度（6 wt% NaCl）、富CO2 (10 mol%)的NaCl-CO2-H2O体系。

Copolymers having about 2 mol% of comonomer appeared to have higher isotacticity as calculated from methine group signals in the 13C-NMR spectra.

经13C-NMR分析，随著共聚单体IR在共聚物中的摩尔分数的增加，共聚物的全同规整度增加，达到一定值后又呈下降趋势。

I can not negligent, he should do what?

我不能不在意了，他要做什么呢？

It is very dangerous to swim in the river alone.

一个人到河里游泳是很危险的。