查询词典 permeation

Low molecular weight mannuronic acid, guluronic acid and κ-carrageenan were prepared from algin and carrageenan by the acid hydrolysis method, and their weight average molecular weights and the distribution widths of molecular weight were determined by high performance gel permeation chromatography respectively.

本文以褐藻胶和κ-卡拉胶为原料通过酸水解分别获得了低聚的甘露糖醛酸，古罗糖醛酸和低聚κ-卡拉胶，并采用HPGPC法测定了这3种低聚糖的重均分子量。

Low molecular weight mannuronic acid, guluronic acid and κ carrageenan were prepared from algin and carrageenan by the acid hydrolysis method, and their weight average molecular weights and the distribution widths of molecular weight were determined by high performance gel permeation chromatography respectively.

本文以褐藻胶和κ-卡拉胶为原料通过酸水解分别获得了低聚的甘露糖醛酸、古罗糖醛酸和低聚κ-卡拉胶，并采用 HPGPC法测定了这 3种低聚糖的重均分子量。在此基础上再经硫酸酯化和成盐修饰制备了各自的硫酸酯碱式铝盐。

The pH value of concentrated liquid is stable in the alkalescence range, and the pH value of permeation liquid is little higher than that of concentrated liquid.

处理过程中，浓缩液的 pH 值稳定在碱性范围内，透过液的 pH 值略高于浓缩液的。

Methods The nereistoxin toxins were extraceted with ethyl acetate∶cyclohenane(1∶1),cleaned by the aluminite powder online and then by auto gel permeation chromatography.

方法取一定量的Al2O3放入萃取池中做吸附剂，通过快速溶剂萃取仪萃取血液中杀参毒素类农药，同时达到在线净化的效果，后运用凝胶色谱净化联用仪进一步净化浓缩到2ml，提取液经LC/MS/MS进行检验。

On the basis of investigating analytic proposition and synthetic proposition, the paper gives some comments on Quine's critique on distinction of the two propositions, illustrating that Quine's critique cannot deny their distinction and only show they are two typical fuzzy conceptions, so we should grasp the dialectical mechanism of their relative distinction and inter-permeation by fuzzy thinking methods.

在考察分析命题与综合命题的基础上，对奎因分析命题与综合命题之区分的批判进行了评述，说明奎因的批判并不能否认分析命题与综合命题的区分，而只是表明了"分析命题"与"综合命题"是两个典型的模糊概念，因而需要运用模糊思维方法去把握它们既相对区分又相互贯通的辩证机理。

The purity of refined Auricularia auricula water-soluble polysaccharides was checked by gel filtration chromatography of Sephadex G-200 and gel permeation chromatography.

凝胶色谱Sephadex G-100和凝胶渗透色谱法检验得到的峰形都为单一对称峰，表明得到纯度较高的黑木耳多糖AAP3-1。

Wastewater containing titanium pigment was treated by microfiltration membrane, Nanometer titanium can be purified and concentrated by use of microfiltration. Operational conditions were optimized and the model was built. Finally, the amount of wash water was reduced. Based on the above research, the whole set equipment was designed, which can meet the needs in a titanium industry with a capability of 500 ton per year. Backflush and automatic control were used in the equipment, which has been steadily run two years, has been widely adopted in titanium industry. The technology has been widely adopted in titanium industry.In the recent years, whole set equipment of ceramic membrane was increasingly used in the recovery of desired production from fermentation broth in China. A new membrane process integrated with pretreatment of flocculation or coagulation was exploited to recover Inosine. ZrO2 ceramic membrane was used in the work, and the average permeation flux could reach 150L/m2.h under pH value of 3, transmembrane pressure 0.1MPa, CFV 3m/s, and temperature higher than 70C. The recovery ratio of inosine is higher than traditional recovery method, although inosine degraded under acidic and high temperature condition.

实验表明，ZrO_2膜处理肌苷发酵液的合适条件为pH=3、操作压力为0.1MPa、膜面流速3m／s、温度大于70度，此时可以获得平均渗透通量150L／m~2h，但由于酸性条件、高温下肌苷降解，导致肌苷收率有所降低，但仍高于传统肌苷提取方法得到的收率；为进一步提高肌苷得率，缩短提取工序，实验研究了絮凝剂预处理发酵液，解决碱性条件下由于蛋白析出导致膜污染加重的问题，研究表明采用CaCl_2絮凝并调节pH=11，可以获得平均渗透通量为180L／m~2h，肌苷得率大于95％；比较了三种肌苷提取工艺得到的产品质量，采用预处理与陶瓷南京工业大学博士学位论文膜分离结合的除杂工艺得到的粗昔质量与陶瓷膜分离、离子交换及活性炭吸附工艺生产的粗普质量相当，均优于传统的提取工艺；设计了每小时处理12一巧吨肌普发酵液的陶瓷膜成套装置，采用部分内循环的方式降低设备的能耗，简化了肌昔提取方式，提高了产品的收率和得率，由于减少离子交换和活性炭吸附，使得工厂废水排放量降低30一40%，降低酸、碱用量，有利于环境保护。

The gas chromatography and gel permeation chromatography methods for determining the residues of 2,4-dichlorophenoxyacetic in bean sprout was developed.

建立了豆芽中2，4-二氯苯氧乙酸残留量的凝胶渗透色谱净化——毛细管柱气相色谱测定的方法。

The enterprise faces the dynamic competitive environment, the great development of information technology, the increasingly permeation and crossing of technology, and the varieties of the technology trade policy all affect the patent strategy and competition behavior of the enterprise.

企业面临着动态的竞争环境，信息技术的快速发展、技术交叉与渗透加强、技术贸易政策的变化都影响着企业的专利战略和竞争行为。

Gas membrane permeation and membrane absorption have a lot of advantages, such as little investment, low energy use, convenient use and simple operation, in addition, membrane absorption also has some merits including surprisingly high interfacial area, absence of emulsions, no unloading at low flow rates, no flooding at high flow rates. So gas membrane permeation and membrane absorption are used for separation propylene / hydrogen chloride in this paper.

气体膜渗透法和膜吸收法具有投资少、能耗低、高效、使用方便和操作简单等特点，此外膜吸收法还有传质面积大的优点和没有雾沫夹带、液泛、沟流、鼓泡等现象发生，因此本文采用气体膜渗透法和膜吸收法分离丙烯和氯化氢混合气。

And Pharaoh spoke to Joseph, saying, Your father and your brothers have come to you.

47：5 法老对约瑟说，你父亲和你弟兄们到你这里来了。

Additionally, the approximate flattening of surface strip using lines linking midpoints on perpendicular lines between geodesic curves and the unconditional extreme value method are discussed.

提出了用测地线方程、曲面上两点间短程线来计算膜结构曲面测地线的方法，同时，采用测地线间垂线的中点连线和用无约束极值法进行空间条状曲面近似展开的分析。