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| 1 | SEDIMENT RESEARCH FOR THE THREE GORGES PROJECT ON THE YANGTZE RIVER SINCE 1993显示文摘This article addresses sediment research carried out for the Three Gorges Project since 1993, when the construction of the project was formally started. Emphasis of the research has been placed on the solution of relevant problems arising from design and construction of various structures, including sedimentation problems in the Chongqing reach; layout of the upper lock approach channel and ways and means to mitigate its deposition; increasing reservoir capacity by optimizing reservoir operation; compensating depth of flow required by navigation below the Gezhouba Project caused by scouring; mitigation of adverse effects of erosion on the reach from Zhicheng to Jiangkou; and evaluating scour of the Jinjiang reach caused by releasing flows of low concentrations from the TGP. In addition, reduction of the sediment load entering into the reservoir area of the TGP in the recent years as well as that expected of the projected construction of large hydropower stations on the Jinsha River upstream of the TGP reservoir is also noted and discussed. | BingnanLIN RenZHANG DingzhongDAI YingTAN | 2005 | International Journal of Sediment Research2005，20，1： | 4 |
| 2 | Preparation and characterization of sulfated TiO_2 with rhodium modification used in esterification reaction and decomposition of methyl orange显示文摘A unique Rh/TiO_2 solid acid catalyst modified with H_2SO_4 was synthesized and evaluated in the esterification reaction of propylene glycol methyl ether and decomposition of methyl orange(MO) in aqueous phase under halogen lamp irradiation. For this purpose, rhodium(Rh) nanoparticles were loaded on SO_4^(2-)/TiO_2 via the photo-deposition method. It was found that SO_4^(2-)/Rh–TiO_2 exhibited stronger catalytic activity than SO_4^(2-)/TiO_2. The new catalysts were characterized by X-ray powder diffraction(XRD), Brunauer–Emmett–Teller(BET), Transmission electron microscopy(TEM) and high-resolution(HRTEM), X-ray photoelectron spectroscopy(XPS) and Fourier Transform infrared spectroscopy(FTIR). Results from XRD and BET show that SO_4^(2-)/Rh–TiO_2 has higher specific surface area and smaller pore size than SO42-/TiO_2. The distribution of loaded Rh was found to be uniform with a particle size of 2–4 nm. Data from XPS reveal that Rh primarily exists as Rh^0 and Rh^(3+)in Rh–TiO_2 and SO_4^(2)-/Rh–TiO_2. These valence forms of Rh likely contribute to the enhanced catalytic activity. Furthermore, FT-IR spectra of the catalysts show an abundance of surface hydroxyl groups, which help the formation of hydroxyl radicals and the enhancement of surface acid density. The results show that more acid sites are formed on the sulfated Rh–TiO_2, and these acidic sites are largely responsible for improving the catalytic performance. This superior SO_4^(2-)/Rh–TiO_2 catalyst has potential applications in reactions requiring efficient acid catalysts, including esterification reactions and waste water treatment. | Yu Niu Fuying Li Kai Yang Ting Qiu Renzhang Wang Cheng Lin | 2016 | Chinese Journal of Chemical Engineering2016，24，6： | 3 |
| 3 | Finite element modeling of cable sliding and its effect on dynamic response of cable-supported truss显示文摘The cable system of cable-supported structures usually bears high tension forces, and clip joints may fail to resist cable sliding in cases of earthquake excitations or sudden cable breaks. A analytical method that considers the dynamic cable sliding effect is proposed in this paper. Cable sliding behaviors and the resultant dynamic responses are solved by combining the vector form intrinsic finite element framework with cable force redistribution calculations that consider joint frictions. The cable sliding effect and the frictional tension loss are solved with the original length method that uses cable length and the original length relations. Then, the balanced tension distributions are calculated after frictional sliding. The proposed analytical method is achieved within MATLAB and applied to simulate the dynamic response of a cable-supported plane truss under seismic excitation and sudden cable break. During seismic excitations, the cable sliding behavior in the cable-supported truss have an averaging effect on the oscillation magnitudes, but it also magnifies the internal force response in the upper truss structure. The slidable cable joints can greatly reduce the ability of a cable system to resist sudden cable breaks, while strong friction resistances at the cable-strut joints can help retain internal forces. | Yujie YU Zhihua CHEN Renzhang YAN | 2019 | Frontiers of Structural and Civil Engineering2019，13，5： | 2 |
| 4 | Ciphertext-Only Attacks Against Compact-LWE Submitted to NIST PQC Project显示文摘As a candidate of the standard of post-quantum cryptography for NIST,Liu,et al.submitted a new public-key encryption scheme Compact-LWE,whose structure is similar to LWE,but with different distribution of errors.They thought that the special error distribution would protect Compact-LWE from known lattice-based attacks.Furthermore,they recommended a set of small parameters to improve the efficiency of Compact-LWE and claimed it can offer 192-bit security.However,in this paper,the authors show that Compact-LWE is not secure under recommended parameters by presenting two ciphertext-only attacks.First,the authors show that the message can be recovered efficiently from the ciphertext.Then the authors go further to recover an equivalent private key efficiently from the public key by exploiting the special structure of Compact-LWE. | LI Haoyu LIU Renzhang LIU Zhen PAN Yanbin XIE Tianyuan | 2022 | Journal of Systems Science & Complexity2022，35，3： | 2 |
| 5 | Hydrothermal synthesis, structure and quantum chemistry of transition metal complex supported by metal-oxo cluster [(Ni(phen)2 2 (ξ-Mo8O26)]显示文摘 | Jiqing Xu Renzhang Wang Chunxiao Guo Guoyu Yang Qingxin Zeng Weiming Bu Ling Ye Yuguo Fan Guangdi Yang | 2001 | Science in China Series B: Chemistry2001，，2： | 1 |
| 6 | A New Equivalent Friction Element for Analysis of Cable Supported Structures显示文摘 | Yan Renzhang Chen Zhihua Wang Xiaodun | 2014 | Steel and Composite Structures2014，18，4： | 1 |
| 7 | Experimental researches of a suspen-dome structure with rolling cable - strut joints 显示文摘 | Chen Zhihua Yan Renzhang Wang Xiaodun | 2015 | Advanced Steel Construction2015，，11： | 1 |
| 8 | Experimental Researches of a Suspen-Dome Structure with Rolling Cable-Strut Joints显示文摘 | Chen Zhihua Yan Renzhang Wang Xiaodun | 2015 | International Journal of Advanced Steel Construction2015，11，1： | 1 |
| 9 | Coherent structure in flow over a slit bluffhody 显示文摘 | DU Yiqing QIAN Renzhang PENG Shiwen | 2006 | Communications in Nonlinear Science and Numerical simula-tion2006，，11： | 1 |
| 10 | Calculation theory and experimental study of the K6 single-layer reticulated shell 显示文摘 | YAN Renzhang CHEN Zhihua | 2014 | International journal of steel structures2014，14，2： | 1 |
| 11 | Hydrothermal synthesis, structure and quantum chemistry of transition metal complex supported by metal-oxo cluster [(Ni(phen)2 2 (ξ-Mo8O26)]显示文摘 | Jiqing Xu Renzhang Wang Chunxiao Guo Guoyu Yang Qingxin Zeng Weiming Bu Ling Ye Yuguo Fan Guangdi Yang | 2001 | Science in China Series B: Chemistry2001，，2： | 1 |
| 12 | Hierarchical group signature with verifier-local revocation revisited显示文摘Dear editor,Group signature(GS)[1]is a milestone in privacy-oriented cryptography,which provides authentication for messages and keeps signers anonymous.Trolin and Wikstr¨om[2]properly generalized GS into the notion of hierarchical group signature(HGS)and showed its typical usage in building anonymous credit card systems. | Lin HOU Dongdai LIN Renzhang LIU | 2022 | Science China(Information Sciences)2022，65，8： | 1 |
| 13 | Coherent strueture in flow over a slitted bluff body显示文摘 | Qian Renzhang Peng Shiwen | 2006 | Communications in Nonlinear Science and Numerical Simulation2006，11，3： | 1 |
| 14 | Investigation of the optimization of slit width for a slitted bluff-body burner:pulverized coal ignition and flame stabilization显示文摘 | Shi Xuefeng Qian Renzhang Shi Hongshi Zhengguang | 1997 | Combustion Science and Technology1997，，124： | 1 |
| 15 | New Principles of Ignition and Flame Sta bility for Low Volatile Pulverized Coal with Slitted Bluff-Body Burnet显示文摘 | Shi Xuefeng Qian Renzhang | 1996 | I nt J Energy Res1996，，11： | 1 |
| 16 | Dynamics and Control of Coupled Orbital and Librational Motion of Tethered Satellite Systems 显示文摘 | Renzhang Zhu A K Misra V J Mod | 1994 | The Journal of the Astronautical Sciences1994，42，3： | 1 |
| 17 | Hydrothermal synthesis, structure and quantum chemistry of transition metal complex supported by metal-oxo cluster [(Ni(phen)2 2 (ξ-Mo8O26)]显示文摘 | Jiqing Xu Renzhang Wang Chunxiao Guo Guoyu Yang Qingxin Zeng Weiming Bu Ling Ye Yuguo Fan Guangdi Yang | 2001 | Science in China Series B: Chemistry2001，，2： | 1 |
| 18 | Coherent structure in flow over a slit bluffbody显示文摘 | Du Yiqing Qian Renzhang Peng Shiwen | 2006 | Communications in Nonlinear Science and Numerical simulation2006，11，： | 1 |
| 19 | Coherent structure in flow over a slitted bluff body 显示文摘 | Du Yiqing Qian Renzhang Pang Shiwen | 2006 | Communications in Nonlinear Science and Numerical Simulation2006，11，3： | 1 |
| 20 | Calculation Theory and Experimental Study of the K6 Single-layer Reticulated Shell显示文摘 | Yan Renzhang Chen Zhihua Wang Xiaodun | 2014 | International Journal of Steel Structures2014，14，2： | 1 |
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