Entity

Time filter

Source Type

Huangshan, China

Yang W.-W.,Ningxia University | Chen P.,Huangshan University
Shenyang Gongye Daxue Xuebao/Journal of Shenyang University of Technology | Year: 2013

To reveal the influence of both welded and non-welded hidden weld seam of unstiffened overlapped CHS(circular hollow sections) K-joints on the seismic performance of joints, the construction technology of such joints was optimized. According to such key parameters as β, γ and τ which affect the unstiffened overlapped CHS K-joints in steel tubular structure, both basic and parametric specimens were designed. With the ANSYS nonlinear finite element method, the numerical simulation for welded and non-welded hidden weld seam of unstiffened overlapped CHS K-joints in steel tubular structure was performed. In addition, the hysteretic loops, skeleton curves and such seismic resistance indexes as ductility were obtained. The results indicate that the variation of such parameters as β, γ and τ has no significant effect on the bearing capacity of joints. The hysteretic performance and ductility of joints with non-welded hidden weld seam are superior to those of joints with welded hidden weld seam. The bigger the brace-to-chord diameter ratio β, the better the ductility of joints is. The larger the chord diameter to thickness ratio γ, the poorer the ductility of joints is. The brace-to-chord thickness ratio τ has less effect on the ductility of joints, and especially has no effect on the ductility of joints with non-welded hidden weld seam. Source


Xi Z.,East China University of Science and Technology | Li C.,Huangshan University | Zhang L.,East China University of Science and Technology | Xing M.,East China University of Science and Technology | Zhang J.,East China University of Science and Technology
International Journal of Hydrogen Energy | Year: 2014

Cu2O/TiO2 nanoparticles were prepared by solvothermal method, which formed the heterostructure of Cu2O/TiO2. Due to the heterostructure, the H2 evolution rate under simulated solar irradiation was increasingly promoted. Meanwhile a certain amount of Cu particles which were confirmed by Transmission Electro Microscopy (TEM) and X-Ray Photoelectron Spectroscopy (XPS), formed on the surface of Cu 2O/TiO2, and the photoactivity was accordingly further enhanced. The stabilized activity was maintained after many times irradiation. It is interesting that after a few hours irradiation the amount of Cu particles on the surface kept unchanged in the presence of Cu2O and TiO 2. The Cu particles that formed during hydrogen generation reaction play a key role in the further enhancement of the hydrogen production activity. In this study, it is the first time to study the details on the formation of the stable ternary structure under simulated solar irradiation and their synergistic effect on the photoactivity of the water splitting. Copyright © 2014, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved. Source


Qi Z.,Huangshan University
Synthesis and Reactivity in Inorganic, Metal-Organic and Nano-Metal Chemistry | Year: 2016

A new dicopper complex [Cu2(L)(N3)2](ClO4)2·4H2O (1) with imidazole-containing macrocyclic polyamine ligand was synthesized, and characterized by elemental analysis, FT-IR, UV-Vis, TGA, single-crystal X-ray diffraction, and PXRD. Complex 1 crystallizes in monoclinic, space group P21/c. The coordination geometry around Cu(II) atom is five-coordinated distorted trigonal-bipyramid, and the imidazole-pendants and the azide anions are located on the different sides of the macrocyclic ligand. © 2016 Taylor & Francis Group, LLC. Source


Jiang H.,Huangshan University
Computers and Mathematics with Applications | Year: 2012

In this paper, we use the analytic semigroup theory of linear operators and the fixed point method to prove the existence of mild solutions for the semilinear fractional order functional differential equations with impulse in a Banach space. © 2011 Elsevier Ltd. All rights reserved. Source


Wang A.,Huangshan University
Acta Crystallographica Section E: Structure Reports Online | Year: 2012

The binuclear title compound, [Cu 2(C 7H 4N 3O 2) 4(C 3H 7NO) 2], is a discrete metal-organic compound having a paddle-wheeltype structure. The Cu···Cu distance is 2.6366(5) Å and an inversion center is located at the mid-point of this bond. The Cu II cation is coordinated by four carboxylate O atoms from four 4-azidobenzoate ligands, and one O atom from a dimethylformamide molecule, forming an overall distorted octahedral geometry when the Cu·· ·Cu bond is also considered. Source

Discover hidden collaborations