醇盐

The effects of the conditions on the extraction of gibberellin were investigated.

研究了醇盐比、体系pH及赤霉素浓度对萃取结果的影响。

Now, the traditional preparation methods of complex nano-catalysts are chemistry method and physics method, such as immergence, ion-exchanged, adsorption, evaporation and sol-gel method.

目前，传统的制备复合型纳米催化剂分为物理、化学制备方法，概括起来有：浸入法、离子交换法、吸附法、蒸发法、醇盐法和溶胶凝胶法。

The emulsion preferably contains an oxidatively dimerized form of a mesoionic compound having a thiolate structure, and a silver chloride content of at least 90% by mol.

该乳剂优选含有氧化二聚形式的具有硫醇盐结构的介离子化合物和至少90摩尔％的氯化银。

The technological process in preparation of the delafossite structure p-TCO thin films by sol-gel method is discussed systematically. The relative advantages and disadvantages of the systems of sol about organic alkoxide and inorganic salt are analyzed, and further development are discussed. It is pointed out that sol-gel method is an effective and feasible means to prepare p-TCO thin films.

本文介绍了铜铁矿结构p-TCO的结构特性以及溶胶凝胶法的基本原理和特点；系统地介绍了溶胶凝胶法制备铜铁矿结构p-TCO薄膜的工艺；分析比较了有机醇盐、无机盐溶胶体系的优缺点；最后讨论了进一步的发展方向，指出溶胶凝胶法是一种高效可行的制备p-TCO薄膜的方法。

The preferred (111) orientation of MgO films became better with the increase of the annealing temperature or thickness of the film. The oxidation of Si surface during the pyrolysis and crystallization of Mg alkoxide is suggested to account for the preferred (111) orientated MgO films on Si (100) and Si (111) substrates.

同时，退火温度的升高和薄膜厚度的增加都能使MgO(111)的择优取向性越来越好；Si的易氧化是导致镁醇盐经过高温分解结晶形成MgO(111)择优取向的主要原因。

The sol's sensitivity towater can be improved by using inorganic salts instead of alkoxide as bismuthand strontium precursors, and hence the sol-gel processing can be simplified.

用无机盐代替醇盐作为锶和铋的前驱体，可克服溶胶对空气中水分的敏感性，从而大大简化了SBT薄膜的制备工艺。

The invention provides a method for homopolymerizing conjugated dialkene or co-polymerizing conjugated dialkene and monovinyl aromatic hydrocarbon. The method comprises the following steps: the conjugated dialkene is homopolymerized or the conjugated dialkene and the monvinyl aromatic hydrocarbon are co-polymerized randomly. The method is characterized in that at least one alkali metal alkoxide compound expressed by the formula is used as a structure regulator; in the formula, R is linear chain or branched chain alkylidene radical having 1 to 10 carbon atoms; M is alkali metal selected from Li, Na, K, Rb and Cs.

本发明提供了一种使共轭二烯烃均聚或者使共轭二烯烃与单乙烯基芳烃共聚的方法，包括在阴离子聚合条件下使共轭二烯烃进行均聚或者使共轭二烯烃与单乙烯基芳烃进行无规共聚，其特征在于采用至少一种式所示的碱金属醇盐化合物作为结构调节剂，其中R为具有1-10碳原子的直链或支链亚烷基；以及M为选自Li、Na、K、Rb和Cs的碱金属。

These [Zn_4]~(2-)-groups as growth units could easily superpose on anodic plane of ZnO single crystals, but difficultly grow on cathodal plane of ZnO single crystals.

在蒸发自组装法制备中，由于嵌段共聚物F_(127)的的两亲性能，ZnCl_2发生醇解反应而形成的醇盐Zn_(2-x)_x互相结合而形成胶束。

After settling for eight hours, or the next morning, pour half of the prepared methoxide into the unheated mixture and mix for five minutes.

静置8小时后，倒一半制备的醇盐至第10步的混合物中，混合5分钟。

The titanium alkoxide mellow forces the hydrolisis legal system to prepare TiO2 to accept the rice noodle body the dispersible investigation into stability.

钛醇盐醇相强迫水解法制备TiO2纳米粉体的分散稳定性研究。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。