查询词典 G-force

Under the optimum conditions, the linear range of the method was 0-80 μg/L. The detection limit was 4.58×10^(-7) g /L.The catalytic reaction was the zeroth order one. The apparent activation energy and the reaction rate constant was found to be 96.04 kJ/mol and 3.61×10^(-3)/s, respectively. The sensitivity was increased by 3 times in the presence of surfactant.

在最佳实验条件下，方法线性范围为0~80μg/L，检出限为4.58×10^(-7)g/L；催化反应为动力学零级反应，表观活化能为96.04kJ/mol，反应速率常数为3.61×10^(-3)/s；反应在表面活性剂存在下，灵敏度提高3倍。

objective to determine the contents of residual acetone in acetoacetic ester,the raw material for the synthesis of edaravone, by gas chromatography.methods sample solution was injected on a gdx column (0.18 mm～0.25 mm) with nitrogen as the carrier gas.the residue was calculated by the external standard method.results the linearity was good over the range of 25 μg/ml～400 μg/ml,with the correlation coefficient of acetone being 0.996 and the average recovery 96.8%.conclusions the method was proved to be simple,rapid,practical and highly sensitive.it is an efficient method for the quality control of acetoacetic ester.

摘要］ 目的：用气相色谱法测定依达拉奉合成起始原料乙酰乙酸乙酯中丙酮的残留量。方法：采用固定相为二乙烯苯乙基乙烯苯型高分子多孔小球（直径为0.18 mm～0.25 mm），氮气为载气，用外标法测定乙酰乙酸乙酯中残留丙酮的含量。结果：该方法在丙酮浓度范围在25 μg/ml～400 μg/ml内呈良好的线性关系，响应曲线相关系数为0.996，平均回收率为96.8%。结论：本法简便，快速、实用，灵敏度高，可有效地用于乙酰乙酸乙酯的质量控制。

Results The linear relationship of oleanolic acid was better between 2.77μg~13.85μg, average recovery rate was 97% and the content of total saponin of Achyranthes was 80%.

结果 齐墩果酸在2.77 μg～13.85 μg范围内线性关系良好，平均加样回收率为97.0%，牛膝提取物中总皂苷含量为80。%。

However, those decreased in secondary forest dominated by Alchornea trewioides, Mallotus conspuyrcatus, Eurycorymbus cavaleriei with lower species diversity. The SOM contents in rock-soil (110 g kg-1) and soil surface microhabitat (77 g kg-1) in gentle slope decreased significantly, which were only 32% and 35% of that in primary forest, respectively; but there were not significant differences in SOM, TN and AN contents in depression between the two vegetations.

以红背山麻杆、广西野桐、伞花木等为优势种的次生林，物种多样性较原生林低，SOM、TN、AN含量也低，缓坡石土面和土面小生境的SOM分别为110 g kg-1和77 g kg-1，是原生林的32%和35%，下降幅度最大，其次为陡坡，而洼地的差异不明显。

In this thesis, we investigate the possible reaction product distribution and mechanism of the carbon monophosphide CP radical with unsaturated hydrocarbons allene CH_2CCH_2 and methylacetylene CH_3CCH at the B3LYP/6-311+G, QCISD/6-311++G(2df,2p), and G2 levels of theory.

中文摘要：本文在B3LYP／6-311+G和QCISD／6-311++G(2df，2p)及G2水平下研究了CP自由基与CH_2CCH_2以及与CH_3CCH两反应体系的产物分布和反应机理。

In this thesis, we investigate the possible reaction product distribution and mechanism of the carbon monophosphide CP radical with unsaturated hydrocarbons allene CH_2CCH_2 and methylacetylene CH_3CCH at the B3LYP/6-311+G, QCISD/6-311++G(2df,2p), and G2 levels of theory.

本文在B3LYP／6-311+G和QCISD／6-311++G(2df，2p)及G2水平下研究了CP自由基与CH_2CCH_2以及与CH_3CCH两反应体系的产物分布和反应机理。

When the addition amount of amomum juice was 25 g,the structures of steamed breads were good and there was less peculiar smell in the steamed breads;when the addition amounts of amomum juice were 30 and 35 g,the specific capacities of steamed breads were larger and their elasticity was good,but there was peculiar smell in the steamed breads.

加入25 g砂仁汁时馒头的结构好，异味较小；加入30和35 g砂仁汁时馒头的比容较大，弹性较好，但馒头中有异味。

An injection rate of 15μg/g CDF-10 antifoaming agent was normally injected to the top of the coke drum at the final 2-6 h of the coking cycle. It could eliminate 3m foam and increase the effective utilization ratio of the coke drum from 65%to 78%, and resulted in higher throughput. The said antifoaming agent had no poison effect on hydrogenation catalyst.

应用结果表明， CDF-10消泡剂一般于生焦周期的最后2～6 h，以15 μg/g 的量在焦化塔顶注入可以将焦炭塔内泡沫层消除3 m，使焦炭塔的有效利用率由65%提高到78%，处理量也可相应提高，并且不会造成对加氢催化剂的硅中毒。

The results indicated that the optimal components of free medium for Ascomycetes SD-9701 producing red pigment was rice flour 20 g,yeast power 5 g and water 1 000 mL.

结果表明，子囊菌SD-9701菌株产红色素的最佳无盐培养基配方为：大米粉20 g/L，发酵粉5 g/L，H2O 1 000 mL。

Methods Ovarian GC DNA fragments of both atretic and developing follicles before and after estrogen (1 μg/ml), androgen (1 μg/ml) treatments were analysed by agarose gel electrophoresis. The expression of bcl-2 mRNA was also determined by northern blotting in GC of developing follicle after sex steroids addition. Results Internucleosomal DNA cleavage occurred in granulosa cells in atretic follicles and after androgen treatment.

应用细胞培养、选择性DNA抽提和琼脂糖凝胶电泳技术分析闭锁卵泡和发育中卵泡颗粒细胞的凋亡状况，及雌激素(1 μg/ml)、雄激素(1 μg/ml)对体外培养发育中的卵泡颗粒细胞凋亡的作用；用Northern印迹杂交技术检测经雌、雄激素刺激后发育中的卵泡颗粒细胞bcl-2基因mRNA表达的变化。

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。