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It exhibited a sudden change as the concentration of organic acid over a specific value.

这种变化与在稀溶液中形成的水包有机酸笼合物结构有关。

Discussion on membrane formation mechanismBased on the Flory-Huggins theory, Phase equilibrium equations of PVDF/DMAc/water ternary system were wrote out, and the binodal and spinodal lines in the phase diagrams of the system were obtained via numerical calculation. Combined the kinetic description and the thermodynamic phase diagram, membrane formation process were analyzed, which prepared the theoretical foundation for the further membrane formation mechanism research.

论文主要从如下四个方面展开:(1)PVDF疏水膜成膜分相机理探讨基于Flory-Huggins理论推导了三元制膜体系凝胶分相组成的线性表达式,并通过&浊点法&测定了PVDF/N,N-二甲基乙酰胺/水/成膜体系的凝胶边界线组成,通过对实验数据的拟合,得到了简捷直观的线性表达式,ln(φ_1)/(φ_3)=bln(φ_2)/(φ_3)+a,误差小于3%。

Both crystallographically unique Zn atoms exit as an octahedral geometry. The four equatorial positions of Zn1 atom are occupied by the carboxylate-oxygen atoms of the two tartrates, and the two oxygens of the left four carboxylate-oxygen atoms coordinate to two different Zn2 atoms, respectively, forming infinite coordination polymer chains. The left two of the trans equatorial positions of Zn2 atom are completed with two oxygen atoms of two water molecules. The axial positions of both Zn atoms are occupied by the nitrogen atoms from different 4,4'-bipyridine molecules to give a 2D rectangular-grid layers with a cavity dimension of 0.51165(3)nm×1.13896(5) nm. A three dimensional network is formed by the crystallization water chains joined by the carboxylate-oxygen atoms through hydrogen-bonding interactions.

两个晶体学独立的Zn原子均为八面体构型,其中Zn1原子赤道配位点被2个酒石酸根中的4个羧酸根氧螯合配位, 2个酒石酸根中剩下的4个羧酸根氧中的2个分别与2个Zn2原子连接形成无限一维链, Zn2原子的另外2个反式赤道配位点被2个水分子氧占据,同时这两种Zn原子的轴向配位点均被4,4'-联吡啶的氮原子占据,形成具有矩形格子[0.51165(3) nm×1.13896(5) nm]的二维层状结构,游离的2个水分子通过氢键作用形成二聚体,并与酒石酸根中未与Zn配位的羧酸氧连接,把二维层状结构连接成三维网状的超分子结构。

The strongly nonlinear pore structures of pulverized coals can be described by the fractal theory. The pore fractal dimensions of 10 pulverized coals, which are in the range of 2.572~2.722, were analyzed on a N2 adsorption porometer. The apparent viscosities of coal water slurries were measured on a Haake rotary viscometer.

用分形理论能描述具有强烈非线性特征的煤粉孔隙结构,利用氮吸附仪分析得到10种煤样的孔隙分形维数为2.572~2.722,利用Haake黏度计测量水煤浆黏度,讨论了孔隙分形、水分、氧量和可磨性指数等对水煤浆性质的影响规律,得到相关的拟合经验公式。

Synthesizing new compounds are always the goal of chemist. Recent ly, the progress of the hydrothermal synthesis method is giving a new method to synthesize new compounds. The hydrothermal synthesis method is prefectly applied to synthesizing the tunnling materials, micro-and meso-porous mat erials as well as some new materials, so this method obtained the intrest of che mist.

中文题名含有杂原子的金属-氧簇(V,Mo,W,P,As)的合成与结构副题名外文题名论文作者李亚丰导师裘式纶教授学科专业无机化学研究领域\研究方向学位级别博士学位授予单位吉林大学学位授予日期2002 论文页码总数70,68页关键词金属-氧簇化学多酸化学无机合成化学馆藏号BSLW /2003 /O611 /3 合成新结构和新组成的化合物一直是化学家们的目标,近代水热合成技术的发展为合成亲新化合物提供了一种新的方法,水热由于在合成具有孔道结构、微介孔材料以及一其它一些新型材料具有其它方法无可比拟的优越性,因此,越来越受到人们的重视。

O?C?Cu isotopes. revealing that the mixed hydrothermal fluid of magmatic water and meteoric water reactivated the ore elements in the carbonate rocks and quartz diorite. Copper was transported, as Clcomplexes in the ore fluid and precipitated to enrich and thicken the primary sedimentary protore.

认为该矿床是在岩浆水和后期少量大气水的加入而形成的混合热液共同作用下,活化碳酸盐岩地层和石英闪长岩中的铜等成矿元素,形成含矿热液,并以铜的氯络合物方式运移,在弱还原性条件下使原始沉积矿胚层加厚变富。

The present invention relates to a water-soluble associative cellulose ether having a DP viscosity from 250 to 20,000 mPa's, measured at a concentration of 1 % by weight, and a molecular substitution, MS, from 0.0001 to 0.005 of a hydrophobic substituent containing an unsubstituted or substituted hydrocarbon group of 8-24 carbon atoms.

本发明涉及一种水溶性缔合纤维素醚,其在1重量%的浓度下测量的DP粘度为250-20,000mPa's,并且含有未取代或取代的C8-C24烃基的疏水取代基的分子取代度MS为

The application, proposed hydrotalcite-like compounds as a new type of environmentally friendly solid catalysts in the aldol condensation, nitrile hydrolysis, epoxide ring-opening reaction of the oxidation of aromatic compounds, alcohols oxidation, reduction of nitro compounds, and many other important reactions in organic synthesis has an important application potential, and with little pollution compared to conventional catalysts, easy separation of advantages of high reactivity.

叙述了水滑石类化合物作为固体酸碱催化剂、氧化还原反应催化剂、催化剂载体等方面的应用情况,提出了水滑石类化合物作为一类新型的环境友好的固体催化剂,在醇醛缩合、腈类水解、环氧化物的开环反应、芳烃类化合物的氧化、醇类氧化、硝基化合物的还原等许多重要的有机合成反应具有重要的应用前景,并且与传统催化剂相比具有污染小、易分离、反应活性高等优点。

Based on the SWCC data in GEO-SLOPE, the SWCC curve was fitted by MATLAB. The suction value of each point on the curve was obtained by programming to estimate the capillary water moving height which needs further research.

在利用GEO-SLOPE软件的土水特征曲线的数据的基础上,结合MATLAB软件对曲线进行了拟合,通过简单的编程计算出了曲线上点的大致的吸力值可以估算毛细水的上升高度。

The coconut tree has many uses: Coconut tree Shui Fuhan the protein, the fat and the multivitamins, the promotion cell grows again, may drink, the sweet solution hot weather, the mesophyll and massive can sober up including 35.5% fat, be helpful the zinc which synthesizes in the human body protein and fortifies yang, may eat may also make the shredded coconut stuffing, the cream, the coconut shell may burn makes the activated charcoal; The coconut tree root boils water may treat the inflammation; But "the coconut tree mat "as early as in the Han Dynasty was royal government's high quality goods, more than 2000 year ago Han Dynasty:"Qiongzhou multi-coconut tree seed leaf, past when Seoul emperor, Zhao Feiyan stands, the base younger sister gathers the person to offer Zhu Zhenzhong to have the coconut tree mat, sees again in the world."

椰子具有很多用途:椰子水富含蛋白质、脂肪和多种维生素,促进细胞再生长,可以饮用,甘甜解暑,叶肉含35.5%的脂肪和大量能醒酒、有助于人体蛋白质合成和壮阳的锌,可吃也可做椰蓉、奶油,椰壳可烧做活性炭;椰根煮水可治疗炎症;而&椰席&早在汉代就是朝廷的贡品了,2000多年前的汉朝:&琼州多椰子叶,昔在汉城帝时,赵飞燕立为后,基妹合徒献诸珍中有椰子席,见重于世。&

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For a big chunk of credit-card losses; the number of filings (and thus charge-off rates) would be rising again, whether

年美国个人破产法的一个改动使得破产登记急速下降,而后引起了信用卡大规模的亏损。

Eph. 4:23 And that you be renewed in the spirit of your mind

弗四23 而在你们心思的灵里得以更新

Lao Qiu is the Chairman of China Qiuyang Translation Group and the head master of the Confucius School. He has committed himself to the research and promotion of the classics of China.

老秋先生为中国秋阳翻译集团的董事长和孔子商学院的院长,致力于国学的研究和推广。