查询词典 precursor

A method of producing a highly stable packaging substrate in which are provided a first precursor having a first backbone and a first ethynyl group, and a second precursor having a second backbone and a second ethynyl group.

一种生产高度稳定的组装基片的方法，在这种方法中制备具有第一种主链和第一个乙炔基的第一种母体，和具有第二种主链和第二个乙炔基的第二种母体。

Since a precursor solution becomes easier to interpenetrate in a separator and an electrode when butyric acid is contained in the precursor solution of a gel electrolyte, a manufacturing process of the gel electrolyte secondary battery is improved.

在凝胶电解质的前体溶液中含有丁酸，前体溶液可以容易渗入隔板和电极中，可以改善凝胶电解质二次电池的制造工序。

It was indicated by UV-Vis spectra characterization that the precursor always contains the tetrahedral Ti species and the octahedral Ti species regardless of the Ti content. Calcination of the precursor resulted in a partial condensation of the octahedral Ti species to form the anatase phase.

UV-Vis 光谱表明，Ti-MWW 合成原粉中含有四面体的钛和八面体的钛，而八面体的钛属于一种骨架外钛，未经酸处理而煅烧会使部分八面体钛缩合形成锐钛矿，而经过酸处理和煅烧后的分子筛则几乎不含有锐钛矿。

The effect degree order is: first, organic template; second, mineralization ion precursor; third, surface treatment; fourth, lay amount of thin film. In the process of biomimetic synthesis, first of all, the stone surface was pretreated with ethanol and functionalized with organic template solution, and then filmed repetitiously by using filtered CaC_2O_4 supersaturation solution as precursor.

仿生合成的影响因素的影响程度为：有机模板的影响＞成矿离子前驱液的影响＞石材表面预清洁方式的影响＞保护膜层数的影响，较佳的制备条件是：石材表面用乙醇预清洁，较浓浓度的有机模板溶液使之表面功能化，过滤的草酸钙过饱和溶液作前驱液，多层制膜。

So we propose that before the precursor is cleaved into DG and mediator, it is released from plasma membrane first, through activating some kind of enzyme by insulin or PIPLC; meanwhile, only insulin can activate the resynthesis mechanism of the precursor, in the contrast, PIPLC was inactive at this course.

推测：胰岛素或PIPLC作用于完整细胞或膜时，激活了某种酶，使前体先从膜上释放至胞外，再被水解为介体和DG，同时胰岛素还能激活再合成前体的机制，而PIPLC却不能。

The tartaric acid concentration of a precursor is adjusted to form an adjusted precursor.

调节前体的酒石酸浓度以形成经调节的前体。

Urushiol can be used as the basic raw material to develop economic and practical coating with good resistance to high temperature alkaline solution. Thus the polymer precursor was prepared using the polymerization of urushiol and formaldehyde. Then the urushiol-titanium chelate polymer (urushiol-Ti resin) was synthesized by way of the reaction of tetrabutyl titanate with the polymer precursor. The prospective target product was analyzed by means of high-performance liquid chromatography and Fourier transformation infrared spectroscopy.

为开发经济实用的耐高温碱水漆酚钛清漆，以漆酚为基本原料，先通过漆酚与甲醛缩聚，再将钛酸丁酯与前期合成产物反应，从而合成出了漆酚－钛螯合高聚物，并通过高效液相色谱和傅立叶红外技术检测了预期产物的合成情况。

The type, initial feeding time and concentration of precursor for HV unit formation had great effects on PHBV production in shake flasks. Propionate was selected as the better precursor for HV fraction than valerate after comprehensive survey of these two precursors. The suitable PHBV shaking-flask culture conditions were obtained through the analysis of PHBV fermentation process, the investigation of several factors by using RSA method and the fed-batch experiments. Cell dry weight, PHBV content, PHBV concentration, HV fraction and yield coefficient of HV unit to propionate were 27. 7g/L, 80.7%, 22. 4g/L, 16. 1mol% and 0.50g/g, respectively.

在共聚物PHBV的摇瓶发酵过程中，PHBV中HV组分形成的前体物质的种类、初始加入时间以及加入量是影响PHBV发酵过程的重要因素；在综合比较丙酸和戊酸这两种前体的基础上，选择丙酸作为HV组分合成前体较适宜；通过对PHBV发酵过程曲线分析、影响PHBV发酵指标的各因素的响应面分析以及摇瓶发酵补料试验，得到了较适宜的PHBV摇瓶发酵补料条件，在此条件下，细胞干重、PHBV含量、PHBV浓度、HV组分含量和HV组分对丙酸的产率系数可分别达到27.7g/L、80.7％、22.4g/L、16.1mo1％和

Better results could be obtained, For 40 hours fermentation, cell dry weight and PHB concentration reached 32.7 g · L-1 and 21.4g · L-1 respectively.The synthesis of Poly (β-Hydroxybutyrate-co-β-Hydroxyvalerate) by the strain G-IIIy from different precusor was studied. It was found that the strain G-IIIy could accumulate PHBV with sucrose as carbon source and propionic acid or valeric acid as precursor . In 2L self-controlled fermentor, the dry cell weight, PHBV concentration and PHBV content reached 35.8g·L-1, 22.6g·L-1 and 38.4% respectively in the case of fermentation for 42 hours and the propionic acid as precursor.

研究了添加不同前体物，G-Ⅲy菌株生产聚β-羟基丁酸和聚β-羟基戊酸共聚物的发酵条件，结果表明，此菌株能以丙酸或戊酸为前体，在蔗糖为碳源的条件下合成PHBV共聚物；在2L发酵罐中，以丙酸为前体，发酵16小时开始流加丙酸，根据发酵液pH值变化控制丙酸流加量，发酵42小时，细胞干重、PHBV产量和含量分别达到35.8g/L，22.6g/L，63.13％。

Different from conventional fabrication of cathode powder, non-chelating polymer polvinyl alcohol serves to sterically entrap the metal cationa in a manner thewey which facilitates the formation of an atomistically homogeneous precursor material. And, calcining the solid precursor material to form a mixed metal oxide material, that is perovskite structured powder La0.5Sr0.2Co0.5Fe0.5O3.

该方法与传统方法不同，采用非螯合聚合物－聚乙烯醇(PVA， Polvinyl alcohol)作为阳离子的载体，形成含有La(上标 3+)，Sr(上标 2+)，Co(上标2+)，Fe(上标 3+) 4种金属阳离子和非螯合聚合物的均匀溶胶，干燥生成固体凝胶状前驱体。

But this is impossible, as long as it is engaging in a market economy, there are risks in any operation.

但是，这是不可能的，只要是搞市场经济，是有风险的任何行动。

We're on the same wavelength.

我们是同道中人。