Peng-wei Zhang

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Twelve compounds were isolated from the venom of Bufo bufo gargarizans. On the basis of their physical and chemical properties and spectral data, their structures were identified as resibufagenin (1), bufotalin (2), desacetylcinobufagin (3), 19-oxodesacetylcinobufotalin (4), cinobufotalin (5), 1beta-hydroxylbufalin (6), 12alpha-hydroxybufalin (7),(More)
AIM To investigate the effects of surface modification of lactose carrier on performance of dry powder inhalations (DPIs). METHODS Modified lactose surface was prepared using a "particle smoothing" process to obtain smooth carrier surface and low surface energy with the presence of magnesium stearate, colloidal silica dioxide and talc. Inverse gas(More)
The crystal structure of the title compound, C(9)H(20)NO(+)·Cl(-)·0.33(H(3)O(+)·Cl(-)), is composed of 4-hydr-oxy-2,2,6,6-tetra-methyl-piperidinium cations, hydroxonium cations and chloride anions, which are connected via O-H⋯O, O-H⋯Cl and N-H⋯Cl hydrogen bonding. The 4-hydr-oxy-2,2,6,6-tetra-methyl-piperidinium cation and one of the two(More)
In the title compound, C(11)H(10)N(3)O(4)S(+)·C(2)Cl(3)O(2) (-), the benzene ring forms an angle of 85.21 (13)° with the pyridinium ring. The nitro group is nearly coplanar with its attached benzene ring [dihedral angle = 3.68 (12)°]. In the crystal structure, strong N-H⋯O hydrogen bonds link the ion-pairs. The packing is further consolidated by weak C-H⋯O(More)
To satisfy the enterprise’s current requirement for web application and solve the existing problems in development of it, the paper presents a web application framework based on MVC mode in J2EE platform, and extends it with XML so that the framework is more flexible, expansible and maintainable. This extended framework has been proved feasible and(More)
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