查询词典 acetic aldehyde

Then esterification of 3, 7-dimethyl-2-pentadecanol with acetic anhydride, the active component of sex pheromone of pine sawfly, 3, 7-dimethyl2-pentadecanyl acetate was obtained in 83. 4％ yield.

最后，用乙酸酐对3，7-二甲基-2-十五碳醇进行酯化，得到松叶蜂性信息素的活性组分--3，7-二甲基-2-十五碳醇乙酸酯，收率为83.4％。

METHODS: Chitosan scaffolds were prepared by 6% chitosan based hydrolgels produced from acetic acid and chitosan. Schwan cell of neonatal rat sciatic nerves was cultured using enzymatic digestion adherent method.

以6%壳聚糖乙酸水溶胶制备壳聚糖支架，取乳鼠坐骨神经采用酶消化后组织块贴壁培养的方法培养许旺细胞。

The experimental results showed that in the acid condition the polymerization rate decreased in acetic acid media, and the contents of species Sia and Sib were increased.

实验表明：在酸性氛围下，当有乙酸化合物存在时，聚硅酸溶液中的硅酸组分与钼酸反应的速率总是要比不含乙酸时的大得多；溶液中存在的Sia和Sib形态均表现出不同程度的增加。

The reaction processes of preparing sodium diacetate from acetic acid and sodium carbonate are studied.

本文对乙酸—纯碱法制备双乙酸钠反应过程进行了研究。

Results Twain-80 can increase the solubility. The dimethylsulfoxide, the sorbic acid and acetic acid chlorine can strengthen its bacteriostasis effect. To choice suitable antiseptic temperature and control antiseptic time may enhance furacilin liquid preparation stability. On the contrary, it may reduce the stability when mixing the antioxidants agents such as the sodium hyposulfite and the sodium bisulfite.

结果 吐温-80可增溶；二甲基亚砜、山梨酸和醋酸氯己定可增强其抑菌效果；选择适宜灭菌温度、控制灭菌时间可提高呋喃西林液体制剂的稳定性；加入硫代硫酸钠和亚硫酸氢钠做抗氧化剂则使其稳定性降低。

Solanine was extracted from peel of a potato variety 'Zhong Shu 3' by using microwave and ethanol/acetic acid solvent. Crude extract was further purified and then qualified by HPLC.

应用微波辐射技术，用乙醇—乙酸双溶剂法从中薯3号马铃薯薯皮中提取了马铃薯植株和块茎中的生物碱龙葵素，对所得初提物进行了纯化，并应用HPLC技术对提取的龙葵素进行了定量分析。

Solute chitosan into acetic acid, stir them to uniformity cystose , refrigerate and cast form into porosity sponginess wire frame..

将壳多糖经乙酸溶解后，搅拌成均匀泡沫状，冷冻铸型制成海绵状多孔基质网架。

High-purity strontium carbonate, six water strontium chloride, nitrate strontium, strontium hydroxide, acetic acid strontium, strontium fluoride, hydrogen phosphate strontium, strontium peroxide, high-purity barium carbonate, barium acetate, high-purity hydrogen and oxygen in water 8 Barium, industrial-grade eight water barium hydroxide, barium peroxide, four water chlorination products such as the annual output of manganese 8,000 tons.

高纯碳酸锶，六水氯化锶，硝酸锶，氢氧化锶，醋酸锶，氟化锶，磷酸氢锶，过氧化锶，高纯碳酸钡，醋酸钡，高纯八水氢氧化钡，工业级八水氢氧化钡，过氧化钡，四水氯化锰等产品年产量8000吨。

The end products in PYG broth were mainly acetic acid, lactic acid and small amount of succinate acid.

在PYG肉汤中的代谢产物主要为乙酸、乳酸以及少量的琥珀酸和异戊酸。G+C mol%为33.16S rRNA 序列分析和同源性检索发现YP 和芽孢杆菌一些种的同源性较高，可达96%。

Sugi woods treated with acetic acid aqueous solution were found to become lighter in weight.

杉木经醋酸水溶液处理后，重量减少。

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。