查询词典 cosolvent

The experimental results show that the mean particle size of griseofulvin precipitated by RESS is smaller than 1, 0μm, narrow distribution and 95％ fine particles is smaller than 1. 0μm. Increase of the pre-expansion pressure, the extraction temperature, the expansion chamber temperature, the spraying distance, the concentration of cosolvent and decrease of the nozzle diameter resulted in decrease of the particle size under the operating condition studied. Enhancement of the pre-expansion temperature resulted in increase of the particles size. The SEM of GF shows that the shape of original is atactic and a wide size distribution, but the microparticles obtained by RESS is reverse. Similar melting points and XRD patterns were observed for the original material and the precipitates obtained by RESS.

实验结果表明，用含夹带剂的RESS法制备的灰黄霉素微粒的平均直径在1μm左右，且分布均匀，95％微粒在1μm以下，仅用CO〓作为超临界流体制备的微粒与上述方法制备的微粒的平均直径和分布相似，只是产量太低，而用机械法制备的微粒平均直径在3μm左右且分布较宽；不同的过程参数对沉析微粒尺寸有不同的影响，预膨胀压力、膨胀室温度、溶解温度以及夹带剂浓度的提高或增大，均可使沉析微粒的直径变小；预膨胀温度提高，所得微粒的直径变大；喷射距离的增加，沉析微粒的直径变小；喷嘴直径越小，由此制得的微粒的直径就越小；根据实验结果还可知道，通过理论计算的马赫盘处微粒的直径可以较好地估计出膨胀室中收集到的微粒的直径。

The results showed being a cosolvent of PVF,γ-butyrolactone could decrease obviously the melting temperature of PVF, and prevent effectively the thermal degradation of PVF.

实验结果表明，γ-丁内酯作为PVF的潜溶剂可以显著地降低PVF的熔融温度，有效地阻止加工过程中PVF的热降解。

Adding methylbenzene into the reaction system as cosolvent ,this can lower the uste amount of DMF and the cost of production .when we chlorinate the Vilsimer reagent and phosphorus oxychloride to sucroste-6-ethal ester is one to ten ,the result of chloridization is the...

探索了氯化后不经三氯蔗糖单酯结晶提纯，直接制备三氯蔗糖的新方法，通过大孔树脂柱，得到了纯度大于95%的产品，终产率高于37%。

Methods: The single factor experiments, systematically study the extraction of temperature, pressure extraction, the extraction time, an attachment ratio (Cosolvent velocity: carbon dioxide flow) and samples of the particles Cynomorium rate of flavonoids extracted.

通过单因素实验，比较系统地研究了萃取温度、萃取压力、萃取时间、夹带比（夹带剂流速：二氧化碳流速）及样品颗粒度对锁阳黄酮提取率的影响。

Different additives acted differently in the course of fermentation. Dodecane as oxygen vector and cosolvent, Tween-85 as surfactants and structure analog of carbon source, were the most important for the lipase production.

不同的添加剂在发酵的过程中所起的作用不同，正十二烷作为氧载体和溶剂的作用，Tween-85作为表面活性剂和碳源结构类似物的诱导作用，在发酵过程中对脂肪酶能够大量的产生都是至关重要的。

The operation parameters include different starfruit weight, flow rate, extraction time, extraction pressure, extraction temperature, different addition volume of ethanol cosolvent, ethanol concentration and other extraction way.

以杨桃量、泄压流速、萃取时间、萃取压力、萃取温度、共溶剂乙醇的添加量与不同萃取方式等为操作变因，配合一次一变因法来进行探讨，以找出最佳萃取条件。

The optimum conditions were starfruit weight (30 g), flow rate (9 NL/min), extraction time (45min), extraction pressure (4500 psi), extraction temperature (65℃), addition volume of ethanol cosolvent (40 ml), ethanol concentration (80%) and static supercritical extraction.

实验结果发现，本次实验最佳条件为杨桃量30 g、杨桃颗粒大小为中颗粒、泄压流速9 NL/min、萃取时间45 min、萃取压力4500 psi、萃取温度65℃、共溶剂乙醇的添加量40 ml 、共溶剂乙醇浓度80 %及萃取方式 SFE-静态，所萃取出之多酚含量1.302 mg/ml 大於非超临界萃取而相同萃取条件下之多酚量0.979 mg/ml。

The characteristic of BMS silica mesostructure and the effect of various synthesis factor (including ammonia/silica molar ratio, composition concentration variation, surfactant alkyl chain length, auxiliary organic molecules such as trimethylbenzene, catalyst structure and properties, solvent and cosolvent volume and its polarity, aging and drying conditions and postsynthesis hydrothermal treatment and so on) on the resultant BMS silica structure and properties were assessed using a series of analytical techniques such as XRD, SEM, TEM,〓Si MAS NMR, TG-DTA and N〓 adsorption measurements.

结果显示BMS二氧化硅分子筛是由大量封装胶束的纳米二氧化硅颗粒（约为20-40nm）堆积形成的聚集体，其双介孔分布中较小的介孔起因于颗粒内部表面活性剂模板形成的介孔，我们称之为骨架介孔。它类似于我们在MCM-41中看到的介孔，可通过改变表面活性剂胶束的尺寸而在2.56-3.65nm的范围内进行调节。

A study on thermal denaturation of hen egg-white lysozyme was carried out by differential scanning calorimetry and modulated temperature differential scanning calorimetry. It was found that DSC profiles of HEWL were dependent on heating rates and concentrations of enzyme as well as cosolvent.

利用差示扫描量热和温度调制差示扫描量热研究了鸡蛋白溶菌酶在纯水及二甲基亚砜/水混合溶剂中的热变性过程，探讨了酶的浓度、扫描速率和共溶剂的含量对热变性行为的影响规律。

Have addressed this problem to suggest possible strategies for utilization of the mundane and the unique aspects of ILs for novel crystallization including high- and low-melting solids using thermal shifts,"solvothermal" techniques, slow diffusion, electrocrystallization, and use of a cosolvent.

针对这个问题，提出可行的策略运用方面的独特世俗与输入新型结晶包括高、低使用固体熔化热之后，&溶剂&技术扩散慢、电、一、使用溶剂。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐