查询词典 acetic aldehyde

In 1903, D. Vorlander and co-workers found that treatment of dibenzylideneacetone with concentrated sulfuric acid and acetic anhydride followed by hydrolysis by sodium hydroxide yielded a cyclic ketol, the structure of which was unknown at the time.

1903年，D。 Vorlander和合作者发现，二苄基丙酮与浓硫酸及醋酸酐经过氢氧化钠水解后产生了当时还不知结构的环状酮醇。

Then the index of ulcer was measured and the ulcer inhibitory rate was measured.Results: The weight of ear of mice treated with XSG was reduced compared with that of normal group,and the joint swelling of rat was less than that of normal group. The latence of sole-ache caused by hot-plate and bellyache caused by acetic were both delayed and the times of skewing body within 15 minute were reduced compared with that of the normal group.

结果：香砂六君颗粒对小鼠二甲苯性耳廓肿有明显对抗作用；对大鼠蛋清性关节肿有一定对抗作用；对热板和醋酸所致小鼠疼痛香砂六君颗粒能明显延长其舔足潜伏期和减少扭体次数；对大鼠利血平型及乙酸型胃溃疡香砂六君颗粒组的溃疡指数从模型组的46.26±1.64mm2和23.02±2.05mm2减少为34.75±0.82mm2和13.84±1.2mm2；对大鼠利血平型及乙酸型胃溃疡香砂六君颗粒的溃疡抑制率分别为51.43%和39.87%。

Using 100% ethanol and ice cold acetic acid to make stock solutions recommended by your company doesnot give any problem for the product to be dissolved. However, because limonin slightly dissolves in water, is it possible that there will be crystal of the product when we prepare the working solution from the stock while exceeding the solubility. If there is such effect on the research result, are there any solutions for it? According to research articles, the IC50 of limonin in cell model is around 100ug/ml, the effective concentration in animal model are way higher!

产品用贵公司推荐的100％乙醇或冰醋酸作为融媒配成母液时并不存在溶解的问题，但当母液进一步配制工作液时由于Limonin微溶于水，若超出溶解度范围是否将有结晶析出，如有将会影响研究结果，应该如何解决该问题（注：根据文献报道细胞模型Limonin的IC50约在100ug/ml左右，动物模型有效作用浓度将更高！

Triethyl orthoformate, industry 97 37%; diethyl malonate, industry 98%; acetic anhydride, reagent 97%.

原甲酸三乙酯，工业97 37%；丙二酸二乙酯，工业98%；醋酸酐，试剂97%。

In our previous study [6] immobilization of PPO was achieved in matrices of polypyrrole and a copolymer of menthyl ester of 3-thiophene acetic acid with pyrrole.

在以前的研究[6]固定化多酚氧化取得方阵吡咯、薄荷共聚物酯3-吩与吡咯乙酸。

Rats in the experimental group received conventional fixation, and then decalcified with modified decalcifying fluid [10 mL of methanoic acid, 8 mL of concentrated hydrochloric acid (1.19 relative density, 3 g of aluminum chloride, 20 mL of formaldehyde (0.4 volume fraction), 3 mL of glacial acetic acid, adding to 200 mL with saline solution], dehydrated, transparentized with chloroform, and then embedded for a long time, dyed, mounted and made into tissue sections.

实验组经过常规固定，而后应用改良脱钙液（甲酸10 mL、浓盐酸(相对密度1.19)8 mL、氯化铝3 g、体积分数为0.4的甲醛20 mL、冰乙酸3 mL，加生理盐水至总体积200 mL）脱钙、脱水、氯仿透明、包埋时间延长、染色、封固和切片；对照组进行常规固定、脱钙、脱水、透明、包埋、染色、封固和切片。

The process was methanolysis ed alkyl inino-acetic acid ester hydrogen chloride salt from methyl-cyanide.

研究了由乙腈为原料经烷基亚氨基醋酸酯盐酸盐醇解制备原乙酸三甲酯的工艺方法，对投料比、反应温度、反应时间及中和指示剂等工艺条件进行了研究，得出较优惠的工艺条件。

Method］Raw material was extracted by 50% ethanol,then purified by acetic ethyl.The extract was injected into LC/MS after filtering with micromembrane.

方法］叶下珠药材，以50%乙醇提取，乙酸乙酯萃取，萃取液过微孔滤膜后，采用LC/MS对各成分分离鉴定。

Methods: Perchloric acid and glacial acetic acid were volumetric solution. Crystal violet was indicator. Results: The contents determined with microtitration were 98.73% and that of regular titration was 98.71%.

通过微型滴定和常规滴定对比，高氯酸冰醋酸（0.1 mol/L）为滴定液，结晶紫为指示剂，用非水滴定法测定马来酸氯苯那敏的含量。

Methods: The HPLC with a C18 column (150mm×4.6mm, 5μm) was used. Methanol-0.05mol/L Potassium phosphate monobasic buffer solution-Acetic acid glacial (40:60:1) was used as mobile phase. The flow rate was 1.0mL/min, and the detection wavelength was at 333nm.

采用高效液相色谱法，用C18色谱柱(150mm×4.6mm， 5μm)，以甲醇-0.05mol/L磷酸二氢钾溶液-冰乙酸(40：60：1)为流动相，流速为1.0mL/min，检测波长333nm。

You can snipe the second and third union leaders from this position.

您可以鹬第二和第三工会领袖从这一立场出发。

Aiming at the currently shortage of XML streams quality detecting, this paper proposes a new forecasting method of XML streams quality by least squares support vector machines, which is used the method of XML keys' vector matrix as windows, and vector product wavelet transform to multilevel decompose and refactor the XML streams series, that can fulfill real-time checking demand of XML quality, and ensure constraint, consist- ency and integrality. For even more adapting net load, it proposes a control strategy by weight and adaptive adjustment to ensure XML streams quality.

针对当前XML数据流质量检测存在的不足，提出构建XML键的矢量矩阵作为窗口，利用矢量积小波变换多级分解与重构XML数据流，再结合最小二乘支持向量机对XML数据流质量进行预测的一种方法，满足XML数据流质量重构时实时检测的要求，保证XML数据的约束性、一致性与完整性；为了更好的适应网络负载，采取加权与自适应窗口调整等调度策略充分保证XML数据流的质量检测。