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Spectroscopic Studies on Co(Ⅱ),Ni(Ⅱ),Zn(Ⅱ) Complexes with 4,4'-Bipyridine

Chemical Research in Chinese Universities 2010年第6期26卷 1011-1015页

作者： SHI Xiu-min WANG Hai-yan LI Yan-bing YANG Jing-xiu CHEN Lei HUI Ge XU Wei-qing ZHAO Bing State Key Laboratory of Supramoleeular Structure and Materials Jilin University Changchun 130012 P. R. China College of Chemical Engineering Changehun University of Technology Changehun 130012 P. R. China The Second Hospital Jilin University Changchun 130041 P. R. China

Fourier-transform infrared（FTIR）,Raman and ultraviolet-visible spectra of 4,4＇-bipyridine and its me-tal-organic coordination compounds synthesized from 4,4＇-bipyridine and nitrate of Co（Ⅱ）,Ni（Ⅱ） and Zn（Ⅱ） were measured and analyzed,*** main FTIR and Raman bands were assigned in *** relationship between these characteristic bands and the structure of ligands and coordination compounds were discussed.

关键词： 4 4'-Bipyridine Infrared spectrum Raman spectrum Ultraviolet-Visible spectrum

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Impact of depth ratio on flow structure and turbulence characteristics of compound open channel flows

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Water Science and Engineering 2022年第3期15卷 265-272页

作者： Shao-wei Ding Cheng Zeng Jie Zhou Ling-ling Wang Chen Chen College of Water Conservancy and Hydropower Engineering Hohai UniversityNanjing 210098China College of Mechanics and Materials Hohai UniversityNanjing 211100China

Compound open channel flows appear in most natural rivers are of great importance in river management and flood *** this study,large eddy simulations were carried out to simulate the compound open channel flows with four different depth ratios(hr=0.10,0.25,0.50,and 0.75).The main flow velocity,secondary flow,Reynolds stress,and bed shear stress were obtained from numerical *** depth-averaged stream wise momentum equation was used to quantify the lateral momentum exchange between the main channel and *** instantaneous coherent structures were presented by the Q criterion *** impact of hr on flow structure and turbulence charac-teristics was *** results showed that with the increase of hr,the high velocity area in the main channel shifted to the floodplain,and the dip phenomenon became more obvious;the Reynolds stress largely contributed to the lateral momentum exchange within the flows near the side walls of floodplain;and the vortex structures were found to significantly increase in the floodplain region.

关键词： Large eddy simulation Compound open channel Depth ratio Flow structure Turbulence characteristics

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