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| 1 | Is urban development an urban river killer? A case study of Yongding Diversion Channel in Beijing, China显示文摘The high population and concrete environment alter urban areas by changing temperature, rainfall runoff, and water resource utilization activities. This study was conducted to investigate the water quality features of the Yongding Diversion Channel in Beijing, China, and its relationship with rainfall and urban development. Monthly water quality data were obtained from April to October of 2004 at monitoring sites of Sanjiadian, Gaojing, Luodaozhuang, and Yuyuangtan. The monthly water quality grades from 2007 to 2011 were also investigated and compared with those of other rivers. Dissolved oxygen and pH showed greater decreases after one or two moderate rainfall events than several light rainfall events. The potassium permanganate index(CODMn), ammonia nitrogen(NH3-N) and total phosphorus(TP) increased more after several light rainfall events than after one or two moderate or heavy rainfall events. Pollutant concentrations(CODMn, NH3-N, TP) in downstream regions showed greater changes than those in upstream areas after heavy rainfall events. Intense human activities around the channel greatly influenced the water quality of the channel in rainy season because of runoff pollution; however, heavy rainfall had a strong dilution effect on the pollutant concentrations in rivers. Overall, urban development has obviously deteriorated the water quality of the Yongding Diversion Channel as indicated by an increase in the water quality index from 3.22 in 2008 to 4.55 in2010. The Pearson correlation between monthly rainfall and water quality indices from 2007 to 2011ranged from 0.1286 to 0.6968, generally becoming weaker as rainfall and rainfall runoff became more random and extreme. | Xi Wang Junqi Li Yingxia Li Zhenyao Shen Xuan Wang Zhifeng Yang Inchio Lou | 2014 | Journal of Environmental Sciences2014，26，6： | 8 |
| 2 | Atmospheric Corrosion of Copper Exposed in a Simulated Coastal-Industrial Atmosphere显示文摘The corrosion behavior of copper exposed in a simulated coastal-industrial atmosphere has been investigated using weight loss measurement, scanning electron microscopy, X-ray diffraction, potentiodynamic polarization and in-situ electrochemical impedance spectroscopy(EIS) with micro-distance electrodes.The results show that corrosion kinetics follows the empirical equation D = Atn. The main corrosion products are composed of Cu_2O, Cu_2Cl(OH)_3 and Cu_4Cl_2(OH)_6. A two-layer structure comprising a loose outer layer and a compact inner layer forms the corrosion products during corrosion process. SO_2 has been found to promote the formation of Cu_4Cl_2(OH)_6. | Chen Pan Wangyan Lv Zhenyao Wang Wei Su Chuan Wang Shinian Liu | 2017 | Journal of Materials Science & Technology2017，33，6： | 6 |
| 3 | Corrosion behavior of copper T2 and brass H62 in simulated Nansha marine atmosphere显示文摘The accelerated corrosion behavior of copper T2 and brass H62 exposed in simulated Nansha marine atmosphere for different periods were investigated by weight loss method, SEM, XRD and potentiodynamic polarization measurements. The results indicate that copper T2 and brass H62 underwent severe corrosion, and the final corrosion rates at 32 days of exposure were 0.24 (μm/d and 0.10 (xm/d, respectively. Moreover, the overall corrosion type of copper T2 was uniform and the corrosion products Cu2O and Cu2C1(OH)3 played a vital role in the corrosion rate of copper. While the dezincification corrosion with zinc preferential dissolution was obvious in brass H62. The predominant phases were the zinc-rich compounds Zn5(OH)8Cl2 H2O, Zni2(SO4)3Cl3(OH)15 5H20 and NaZn4(SO4)Cl(OH)6.6H2O. There existed a large number of copper-rich holes with 20-50μm depth beneath the corrosion product layer. | Xiao Lu Yuwei Liu Miaoran Liu Zhenyao Wang | 2019 | Journal of Materials Science & Technology2019，35，9： | 5 |
| 4 | Effect of sulfate-reducing bacteria on corrosion of X80 pipeline steel under disbonded coating in a red soil solution显示文摘Effect of sulfate-reducing bacteria on the corrosion behaviors of API-X80 pipeline steel has been studied in crevices under simulated disbonded coatings in red soil solution.The results show that there are amounts of SRB in the crevice under the simulated disbonded coating in the red soil solution during the whole period of experiment.The electrochemical impedance spectroscopy shows that SRB can enhance the corrosion of the steel in the crevice under the simulated disbonded coating,and the thermodynamic analyses indicate that SRB can accelerate the corrosion of steel using not only sulfate but also ferric hydroxide as electron acceptors. | Boxin Wei Jin Xu Qi Fua Qingyu Qin Yunlong Bai Cheng Sun Chuan Wang Zhenyao Wang Wei Ke | 2021 | Journal of Materials Science & Technology2021，，28： | 4 |
| 5 | Assessment of effects of best management practices on agricultural non-point source pollution in Xiangxi River watershed显示文摘 | Ruimin Liu Peipei Zhang Xiujuan Wang Yaxin Chen Zhenyao Shen | 2013 | Agricultural Water Management2013，，： | 3 |
| 6 | Corrosion Behavior of 316L Stainless Steels Exposed to Salt Lake Atmosphere of Western China for 8 years显示文摘The evolution of corrosion behavior of 316 L stainless steels exposed to salt lake atmosphere for 8 years was investigated.The results showed that the stainless steel in salt lake atmosphere had a greater corrosion rate during the initial exposure time and relatively lower corrosion rate during the subsequent exposure time.Dust depositions accumulated on the downward surface caused severe local corrosion of stainless steel.As exposure time prolonged,the relative amount of Croxide and Feoxidein the corrosion products gradually increased,which may directly affect the corrosion rate of stainless steels.Moreover,the maximum pit depth followed a power function with respect to exposure time. | Mingxiao Guo Junrong Tang Tianzhen Gu Can Peng Qiaoxia Li Chen Pan Zhenyao Wang | 2021 | Acta Metallurgica Sinica(English Letters)2021，34，4： | 3 |
| 7 | Experimental and numerical investigation of threedimensional vortex structures of a pitching airfoil at a transitional Reynolds number显示文摘This research examines the vortex behaviors and aerodynamic forces in dynamic stall phenomena at a transitional Reynolds number(Re=90000)using experimental and numerical approaches.Periodic sinusoidal pitching motion at two different reduced frequencies is used to achieve the dynamic stall of a NACA 0012 airfoil.Several leading edge vortices form and detach in the dynamic stall stage.The flow then quickly transitions to a full separation zone in the stall stage when the angle of attack starts to decrease.There is discrepancy between the phaseaveraged and instantaneous flow field in that the small flow structures increased with angle of attack,which is a characteristic of the flow field at the transitional Reynolds number.The interaction between the streamwise vortices in the three-dimensional numerical results and the leading edge vortex are the main contribution to the turbulent flow.In addition,the leading edge vortex that supplies vortex lift is more stable at higher reduced frequency,which decreases the lift fluctuation in the dynamic stall stage.The leading edge vortex at higher reduced frequency is strong enough to stabilize the flow,even when the airfoil is in the down-stroke phase. | Zhenyao LI Lihao FENG Hamid Reza KARBASIAN Jinjun WANG Kyung Chun KIM | 2019 | Chinese Journal of Aeronautics2019，32，10： | 2 |
| 8 | Nanosecond pulsed laser-assisted modified copper surface structure:Enhanced surface microhardness and microbial corrosion resistance显示文摘Microbiologically influenced corrosion(MIC) is an unavoidable problem in several industries. Copper(Cu)and its alloys are widely used engineering materials. However, MIC of Cu remains a persistent challenge to their performance and functional lifetime under aggressive environments. This study investigated nanosecond pulsed laser processing(LP), which may enhance the corrosion resistance of Cu. The microstructural evolution and corrosion behavior of LP-Cu in the presence of sulfate-reducing bacteria(SRB) were evaluated. Typical deformation-induced microstructural features of high-density dislocations were analyzed on the top surface of LP-Cu coupon. Electrochemical measurements suggested that LP-Cu coupons exhibited better corrosion resistance in SRB-inoculated solution compared with their original counterpart. The enhanced corrosion resistance by LP primarily resulted from the combined influences of compressive residual stress and work hardening in the surface. However, overlap percentage played a key role in improving corrosion resistance. LP produced optimal corrosion resistance at 50% overlap. Therefore, this study introduces a unique and an option for anticorrosion control in manufacturing processes and potentially implements it onto other materials to improve its microbial corrosion resistance through LP. | Boxin Wei Jin Xu Liqun Gao Hui Feng Jiajun Wu Cheng Sun Zhenyao Wang Wei Ke | 2022 | Journal of Materials Science & Technology2022，，12： | 2 |
| 9 | Seawater hydraulics:From the sea surface to depths of 11000 meters显示文摘Using seawater as the working medium,the seawater hydraulic system has significant advantages in the deep sea,such as eliminating contamination caused by oil leaks,no oil tanks,and the ability to automatically adapt to sea depths.As working depths increase,seawater hydraulic technology faces enormous challenges.First,the physical and chemical properties of seawater,such as density,temperature,and composition,change significantly.Second,hydraulic components are subject to an environmental pressure of up to 110 MPa,which causes serious deformation or even seizure of moving pairs and significantly affects the efficiency of hydraulic components.The friction and wear characteristics between the moving pairs also significantly change with the change in sea depth,therefore developing the matching material according to depth is necessary.Finally,the cavitation characteristic of a valve port is obviously different from that on land,so special material and structure should be used to improve the service life of the valve port.These factors severely restrict the improvement of the working depths and characteristics of seawater hydraulic components.This article focuses on the abovementioned problems and provides solutions for deep-sea seawater hydraulic technology. | LIU YinShui CHENG Qian WANG ZhenYao PANG Hao DENG YiPan ZHOU XinPing LUO XiaoHui CUI Yan WU DeFa | 2022 | Science China(Technological Sciences)2022，65，9： | 2 |
| 10 | Motion measurement u- sing inertial sensors, ultrasonic sensors, and magne- tometers with extended Kalman filter for data fusion 显示文摘 | Zhao He Wang Zhenyao | 2012 | IEEE Sensors Journal2012，12，5： | 1 |
| 11 | Effects of UV on the Corrosion Behavior of Pure Aluminum 1060 in Simulated Nansha Marine Atmosphere显示文摘The corrosion behavior of pure aluminum 1060 subjected to a wet-dry cyclic accelerated test in simulated Nansha marine atmosphere in the dark and under UV illumination has been investigated by means of scanning electron microscopy(SEM),electrochemical impedance spectroscopy(EIS),and Mott–Schottky measurements in this work.The results show that under the two conditions,the native oxide films are constantly destroyed and the thicknesses of the oxide films continuously decrease in the first 24 days of the corrosion test.In particular,UV illumination can diminish the pitting corrosion susceptibility of the native oxide films to an extent in terms of a photo-induced modifi cation of the native oxide film on the pure aluminum surfaces.Besides,UV illumination can also reduce the carrier concentration in the oxide films,thus reducing the conductivity and the corrosion rate. | Can Peng Mingxiao Guo Tianzhen Gu Xiaohan Li Chuan Wang Zhenyao Wang Cheng Sun | 2022 | Acta Metallurgica Sinica(English Letters)2022，35，7： | 1 |
| 12 | Corrosion behavior on aluminum alloy LY12 in simulated atmospheric corrosion process 显示文摘 | Wang Zhenyao Ma Teng Han Wei | 2007 | Transactions of Nonferrous Metals Science of China2007，，： | 1 |
| 13 | Molten salt synthesis and high-performance of nanocrystalline Li-rich cathode materials 显示文摘 | Wang Zhenyao Li Biao Ma Jin | 2014 | RSC Advances2014，4，15： | 1 |
| 14 | Characterisation of initial atmospheric corrosion carbon steels by field exposure and laboratory simulation显示文摘 | Wei Han Guocai Yu Zhenyao Wang Jun Wang | 2007 | Corrosion Science2007，，7： | 1 |
| 15 | Symbiotic Marketing and Trust-Related Issues: Empirical Evidence From an Emerging Economy显示文摘 | Huang Jun Li Ji Zhang Pengcheng Cai Zhenyao Wang Xinran | 2011 | Jour- nal of Global Marketing2011，24，5： | 1 |
| 16 | Sedimentary records of metal speciation in the Yangtze Estuary: Role of hydrological events显示文摘 | Chenghong Feng Shou Zhao Dongxin Wang Junfeng Niu Zhenyao Shen | 2014 | Chemosphere2014，，： | 1 |
| 17 | Spatial and seasonal distribution of organochlorine pesticides in the sediments of the Yangtze Estuary显示文摘 | Yangyang Li Junfeng Niu Zhenyao Shen Chi Zhang Zhengzao Wang Tiande He | 2014 | Chemosphere2014，，： | 1 |
| 18 | Corrosion behavior on aluminum alloy LY12 in simulated atmospheric corrosion process 显示文摘 | Wang Zhenyao Ma Teng Hart Wei | 2007 | Transactions of Nonferrous Metals Science of China2007，37，3： | 1 |
| 19 | Electrochemical properties of the erbium-chitosan-fluorine-modified PbO2 electrode for the degradation of 2,4-dichlorophenol in aqueous solution显示文摘 | Wang Ying Shen Zhenyao Li Yang | | 0，，10： | 1 |
| 20 | Adsorption of phosphorus on sediments from the Three-Gorges Reservoir (China) and the relation with sediment compositions显示文摘 | Wang Ying Shen Zhenyao Niu Junfeng | 2009 | Journal of Hazardous Materials2009，162，1： | 1 |
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