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Summing up the reasons for the above situation is that there is the possibility of transformation between the status of two contacts (Cassie state and the Wenzel state) on super-hydrophobic surface, which can be promoted in different external conditions.

观察水在制备的超水涂层表面冷凝和蒸发情况,发现液滴可以在极易滚落和被紧紧粘在表面上无法下流,这两种状态之间相互转化,出现上述现象的原因可能在于超水表面上的两种接触状态(Cassie态和Wenzel态)之间存在着相互转化的可能性,不同的外界条件可以促使向不同方向的转化。

The sizes of the self-assembly micelles of the amphiphilic block copolymers and the effects werestudied by dynamic light scattering and UV-visible spectrophotometer. The micelle sizes werelargely influenced bythe hydrophobic chain content in the copolymer, the properties of the solvent and the copolymer concentration in the organic phase. The morphology of the micelles was investigated by transmission electron microscopy. Theresults showed that the micelles appeared spheres with inner core and outer shell. The critical association concentrations were determined by pyrene monomer fluorescence probe technology. The degradability of copolymer was studied by the loss of the intrinsic viscosity in the degradation process. The results indicated that the degradation rate of PECL was slower thanthat of PELLA and PEDLLA. The stability of the copolymer micelle dispersion was examined by measuring the critical flocculation concentration, which gradually decreased with increasing the content of thehydrophobic chain in the copolymer. The rheological results showed thatthe viscosity ofthe micelle dispersion with higher content of PEG segments was firstly decreased and then increased with the increasingthe temperature. Otherwise, the variation of viscosity was irregular. The viscosity of the micelle dispersion increased with the increase of the electrolyte (Na 2SO 4) concentrations. Polymer micelles paclitaxel was prepared by self-emulsification/solvent evaporation method and solid dispersion technique with amphiphilic block polymers as the carrier material.

运用动态光散射和紫外分光光度计研究了两亲性嵌段共聚物自组装胶束的粒径及其影响因素,结果表明,自组装胶束的形成机理受制备方式的控制,胶束的粒径随着共聚物相对分子质量或水嵌段相对分子质量和有机相中共聚物浓度的增大而增大,随着有机溶剂的水溶性的增强而减小;采用透射电镜观察胶束的形态结构,发现胶束呈具有核壳结构的均匀球形;采用芘荧光探针法测两亲性嵌段共聚物的临界聚集浓度;通过降解过程中共聚物特性粘度的变化研究两亲性共聚物的降解性能,发现与PELLA和PEDLLA的相比,PECL 降解速率较慢;随着共聚物中水嵌段含量的增大,纳米分散液的稳定性逐渐下降;PEG含量高的PEDLLA纳米分散液随着温度的升高,纳米分散液的粘度先下降然后增大,反之,没有规律性,且随着电解质Na 2SO 4浓度的增大,体系粘度增大。

Check and approval of secret memorials is the course in which the secret memorials were submitted to imperial palace and were replied by the emperor.

,明代文献也称为密奏、密揭、密言事、实封、封事等,是臣民上呈给皇帝的一种秘密上行文书。

In Ming Dynasty, check and approval of secret memorials by the emperor had a formalized course, which was closely related to the political situation of Ming Dynasty.

从朝臣谋划上密,到密经皇帝批出发抄,其运作过程大体有书

To study the relationship between the "tail" structure and the characteristics of Gemini surfactants, a new gemini surfactant CH(subscript 2s)-αω-Bis (dehydroabietyihydroxypropyltetramethylethyldiammonium Chloride) here s=2, has been synthesized. Dehydrogenated rosin as hydrophobic "tails" in the structure. The affections of reacttants ratio, reaction temperature and time on the yield of aimed compound have been discussed.

研究了Gemini表面活性剂中水&尾巴&结构对性质的影响,以脱氢松香酸和环氧氯丙烷为原料合成了中间体3-脱氢松香酰氧-2-羟丙基氯,再与四甲基乙二胺反应,得到1种以脱氢松香酰基为水链&尾巴&的对称Gemini型双季铵盐阳离子表面活性剂:二氯化-N,N'-二(3-脱氢松香酰氧-2-羟丙基)四甲基乙二胺。

To study the relationship between the hydrophobic "tail" structure and thecharacterizations of Gemini surfactants, a new gemini surfactant CsH2s-α,ω-bis(dehydroabietylhydroxypropylteteramethylethylammonium Chloride),here s=2, wassynthesized. Dehydrogenated rosin as hydrophobic "tails" in the structure. The impact factorsin the two steps are discussed.

为研究gemini表面活性剂中水&尾巴&结构对性质的影响,本论文以脱氢松香酸和环氧氯丙烷为原料合成了中间体3-脱氢松香酰氧-2-羟丙基氯,再与四甲基乙二胺反应,得到一种以脱氢松香酰基为水链&尾巴&的对称gemini型双季铵盐阳离子表面活性剂:二氯化-N,N′-二(3-脱氢松香酰氧-2-羟丙基)四甲基乙二胺。

The contact angle of glassfiber epoxy resin fluoridized by 3-(1H, 1H, 5H-Octafluoropentyloxy)-1, 2-Propenoxide hasincreased from 51.3°to 75.3°, and the surface tension has reduced from 36.5mN/m to25.5mN/m accordingly.

同时经过环氧丙基八氟戊醚处理的环氧玻璃钢表面对水的接触角也由原来的51.3°增大到75.3°,其表面张力由36.5mN/m减小到25.5mN/m,达到一定的油效果。

Based on a survey on legislators' assistants and a content analysis upon Legislative gazettes, this paper shows that the relationship of these two categories of behavior is not necessarily negative. That is to say, the legislators who make efforts in the Legislative Yuan may not necessarily ignore the constituencies. On the contrary, the legislators who make efforts in the constituencies may not necessarily ignore the activities in the Legislative Yuan.

但本研究以第三届立委为研究焦点,采用问卷访问与内容分析方法,研究结果发现:跨不同的立委作比较,立法问政与选区服务行为并不是负方向的关系,而是没有必然的关系,也就是说,在立法问政较用心的立委并不见得一定较於选区服务;同样的,对选区服务较用心的立委也不见得一定较於立法问政。

For the high affinity sites, binding constant decreases with the decrease of the alkyl chain lengh in the surfactants, but for the low affinity sites, binding constant increases and are not distinct when the alkyl chain is dedocyl. The binding sites are related to the alkyl chain lengh, not for the number of hydrophile groups and temperature.Isothermal titration calorimetry has been used to observe the enzyme-catalyzed hydrolysis reaction of urea.

对于高结合位点,结合常数随水碳链长度的减小而减小;对于低结合位点,结合常数随水碳链长度的减小而增大,相应的当碳链减小至C12时,低结合位点不明显,结合位点数可能只与碳链长度有关,随亲水头基和温度变化不明显。

Traps the steam heating system in a blocking air drainage, select the appropriate traps, steam heating device can achieve maximum efficiency.

水阀在蒸汽加热系统中起到阻汽排水作用,选择合适的水阀,可使蒸汽加热设备达到最高工作效率。

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你知道吗,我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书,王祥生,李德昌。安徽省首次发现嗜群血蜱。

Chapter Three: Type classification of DE structure in Sino-Tibetan languages.

第三章汉藏语&的&字结构的类型划分。