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Sun Q.X.,Zhejiang University | Li H.,Zhejiang Education Institute
Reports on Mathematical Physics | Year: 2010

We consider the weak Hopf algebra W{double-struck};Uq associated with a generalized Kac-Moody algebra. We give an equitable presentation for W{double-struck};Uq, in which the generators are on a roughly equal footing. For = sl2 we describe how the W{double-struck};Uq-modules look in terms of the equitable generators. © 2010 Polish Scientific Publishers PWN, Warszawa. Source

Yan X.,Zhejiang University | Zhou M.,Zhejiang University of Technology | Chen J.,Zhejiang University | Chi X.,Zhejiang University | And 6 more authors.
Chemical Communications | Year: 2011

Driven by the benzo-21-crown-7/secondary ammonium salt recognition motif, a linear supramolecular polymer was formed from self-organization of a low-molecular-weight self-complementary monomer in chloroform. From this supramolecular polymer, nanofibers were obtained successfully via electrospinning. © 2011 The Royal Society of Chemistry. Source

Zhang H.,Wenzhou University | Hu X.,Wenzhou University | Shao S.,Zhejiang Education Institute
Journal of Chemical and Engineering Data | Year: 2010

The dilution enthalpies of L-alanine in dimethylsulfoxide (DMSO) + water and dimethylformamide (DMF) + water mixtures at 298.15 K have been determined, respectively, using an isothermal titration calorimeter. On the basis of the McMillan-Mayer theory, the homochiral enthalpic interaction coefficients h XX of L-alanine in both of the mixtures of various mass fractions (w2) 0 to 0.3) have been calculated. It was found that hXX is positive at lower DMSO or DMF concentrations, but it becomes less positive and even negative with the increasing concentration of DMSO or DMF. The results were interpreted from the point of view of solute-solute interactions mediated by these two aprotic cosolvents. © 2010 American Chemical Society. Source

Tian Y.,Tianjin University | Tian Y.,Zhejiang Education Institute
Wuhan Ligong Daxue Xuebao (Jiaotong Kexue Yu Gongcheng Ban)/Journal of Wuhan University of Technology (Transportation Science and Engineering) | Year: 2010

Based on analyzing the guideline of location selection for critical material reservoirs, the thesis targets at establishing an indicator system of location selection for critical material reservoirs by adopting the Delphi method. By adopting the AHP analysis-structure-chart method, the thesis presents a structure chart of an indicator system to evaluate the location selection of critical material reservoirs. Furthermore, the thesis applies the FAHP method and the 0.1~0.9 measurement to construct a fuzzy supplementary judgment matrix and to testify its compatibility and consistency, which jointly contribute to the establishment of an effective measurement system for critical material reservoirs in a collective decision making progress. Through conducting survey and analysis on six tentative location selection plans, this thesis comes to an conclusion that it is both scientific and feasible to select locations for critical material reservoirs on the basis of the theoretical model hereby provided in this thesis. Source

Tong W.,Zhejiang University | Zheng Q.,Zhejiang University | Shao S.,Zhejiang Education Institute | Lei Q.,Zhejiang University | Fang W.,Zhejiang University
Journal of Chemical and Engineering Data | Year: 2010

The micelle formations in aqueous solutions of a set of quaternary ammonium surfactants, N-alkyl-N-2-hydroxyethyl-N,N-dimethyl ammonium bromide (C nHDAB, n = 12, 14, and 16), N-alkyl-N,N-2-dihydroxyethyl-N-methyl ammonium bromide (C nDHAB, n = 12, 14, and 16), along with N-dodecyl-N,N,N-trimethyl ammonium bromide (DTAB), and N-cetyl-N,N,N-trimethyl ammonium bromide (CTAB), were investigated by the isothermal titration calorimetry (ITC). The critical micellar concentrations (CMCs) and the enthalpies of micellization at six different temperatures were determined. The entropies and Gibbs free energies of micellization were then calculated by using the pseudophase separation model. The effects on the thermodynamic data of the temperature, the length of the alkane chain, and the number of hydroxyethyl substituents on the surfactant headgroup were discussed. The CMC value of each surfactant increases slightly with the temperature increase. At a given temperature, both the increases of the length of the alkane chain and the number of hydroxyethyl substituents lead to the decreases of the CMC values. © 2010 American Chemical Society. Source

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