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| 1 | Fabrication of Bioinspired Structured Superhydrophobic and Superoleophilic Copper Mesh for Efficient Oil-water Separation显示文摘 | Yan Song Yan Liu Bin Zhan Cigdem Kaya Thomas Stegmaier Zhiwu Han Luquan Ren | 2017 | Journal of Bionic Engineering2017，14，3： | 11 |
| 2 | Effects of digestate application depth on soil nitrogen volatilization and vertical distribution显示文摘This study investigated the effect of the digestate application depth on soil nitrogen volatilization and vertical distribution in black loam soil and sandy loam column.The contents of soil moisture,TKN(total Kjeldahl nitrogen),ammonium nitrogen,nitrate nitrogen,and the extent of ammonia volatilization were tested by applying digestate at depths of 0 cm,2 cm,6 cm,10 cm,15 cm and 20 cm,respectively.The experimental results showed that ammonia volatilization mainly occurred in the first 10 days and reduced significantly when the application depth was deeper than 10 cm.At the same application depth,compared with the black loam,the nitrogen loss in sandy loam through ammonia volatilization was less,and the penetration depth of nitrate nitrogen and ammonium nitrogen were all deeper.In the same soil,nitrate nitrogen penetrated deeper than ammonium nitrogen at all application depths. | Wang Lili Li Wenzhe Wang Zhongjiang Wang Zhiwu Sui Chao Li Yan | 2016 | International Journal of Agricultural and Biological Engineering2016，9，5： | 8 |
| 3 | First light of the 1.8-m solar telescope–CLST显示文摘Large-aperture solar telescopes play an important role in solar observations and research,and require high temporal and spatial resolution[1].To solve some fundamental problems such as the solar dynamo,coronal heating,and the triggering of major solar eruptions,the spatial resolution for solar-atmosphere observation should reach at least 0.1 arcsec[2]. | ChangHui Rao NaiTing Gu XueJun Rao Cheng Li LanQiang Zhang JinLong Huang Lin Kong Ming Zhang YunTao Cheng Yi Pu Hua Bao YouMing Guo YangYi Liu JinSheng Yang LiBo Zhong ChangJun Wang Kai Fang XiaoJun Zhang DongHong Chen Cheng Wang XinLong Fan ZhiWu Yan KeLe Chen XiYa Wei Lei Zhu Hong Liu YongJian Wan Hao Xian WenLi Ma | 2020 | Science China(Physics,Mechanics & Astronomy)2020，63，10： | 6 |
| 4 | An Intelligent Fault Diagnosis Method of Multi-Scale Deep Feature Fusion Based on Information Entropy显示文摘For a single-structure deep learning fault diagnosis model,its disadvantages are an insufficient feature extraction and weak fault classification capability.This paper proposes a multi-scale deep feature fusion intelligent fault diagnosis method based on information entropy.First,a normal autoencoder,denoising autoencoder,sparse autoencoder,and contractive autoencoder are used in parallel to construct a multi-scale deep neural network feature extraction structure.A deep feature fusion strategy based on information entropy is proposed to obtain low-dimensional features and ensure the robustness of the model and the quality of deep features.Finally,the advantage of the deep belief network probability model is used as the fault classifier to identify the faults.The effectiveness of the proposed method was verified by a gearbox test-bed.Experimental results show that,compared with traditional and existing intelligent fault diagnosis methods,the proposed method can obtain representative information and features from the raw data with higher classification accuracy. | Zhiwu Shang Wanxiang Li Maosheng Gao Xia Liu Yan Yu | 2021 | Chinese Journal of Mechanical Engineering2021，34，4： | 4 |
| 5 | Mechanical Characteristics of Typical Plant Leaves显示文摘Plant leaf is a natural composite biomaterial, and its strength is closely related to the microstructure. In this paper, themechanical characteristics of eight species of plant leaves were investigated and analyzed. The ultimate strength of leaves andthe hardness of leaf surfaces were measured by using universal testing machine and nanoindenter tester, respectively. The tensilestrength of the parallel microstructure was investigated based on its cross-sectional mechanical model. The results of tensiontests indicate that the ultimate strength of a leaf is related to the material composition and structure. The coriaceous leavesusually exhibit higher tensile strength. For example, the Phyllostachys pubescens leaf can achieve the maximum ultimatestrength of 5.9091 N·mm-2. It is concluded from the results of hardness tests that material components of leaf surface caninfluence the surface hardness evidently. The leaf surface composed of more lignin and cellulose materials shows a highersurface hardness than that composed of more carbohydrates materials. | Shujie Wang, Luquan Ren, Yan Liu, Zhiwu Han, Yue Yang The Key Laboratory of Bionic Engineering (Ministry of Education, China), Jilin University, Changchun 130022, P. R. China | 2010 | Journal of Bionic Engineering2010，7，3： | 4 |
| 6 | Angle-dependent discoloration structures in wing scales of Morpho menelaus butterfly显示文摘The Morpho butterfly is famous for its typical structural color and has increasingly attracted the interest of scholars in a wide variety of research fields. Herein, it was found that the color of Morpho menelaus butterfly wings is not only structure-based but also viewing-angle-dependent. Firstly, the discoloration effect of this typical butterfly was confirmed by a series of experiments. Then, the general form, arrangements, and geometrical dimensions of the scales were observed using a stereomicroscope. Scanning electron microscopy was also used to examine the two-dimensional morphologies and structures of a single scale. Afterwards, one model with the optimized three-dimensional profile of the structure was described using Pro-engineer software. The associate model was then analyzed to reconstruct the process between the incident light and the model surface. Finally, the mechanism of the angle-dependent discoloration effect was analyzed by theoretical calculation and optical simulation. Different light propagation paths and the length of the incident light at different angles caused destructive or constructive interference between the light reflected from the different layers. The different spectra of the reflected light make the wings appear with different structural colors, thereby endowing the angle-dependent discoloration effect. The consistency of the calculation and simulation results confirms that these structures possess an excellent angle-dependent discoloration effect. This functional 'biomimetic structure' would not only be of great scientific interest but could also have a great impact in a wide range of applications such as reflective displays, credit card security, and military stealth technology. | NIU ShiChao LI Bo YE JunFeng MU ZhengZhi ZHANG JunQiu LIU Yan HAN ZhiWu | 2016 | Science China(Technological Sciences)2016，59，5： | 4 |
| 7 | Microstructure Characteristics of Interaction Layer of Zn-Al Eutectic Alloy with Al_2O_3p/6061Al Composites显示文摘The interaction between Zn-Al eutectic alloy and Al2O3p/6061Al composites in the vacuum furnace was investigated. Great attention has been paid to the elements diffusion, the microstructure and formation of the interface between Zn-AI eutectic alloy and Al2O3p/6061Al composites. Experimental results show that Zn-Al eutectic alloy has a good wetting ability to Al2O3p/6061Al composites and the wetting angle decreases with increasing the temperature in vacuum. After the interaction,an interaction layer forms between Zn-AI alloy and Al2O3p/6061Al composites. The phases in the interaction layer mainly consist of α-Al(Zn), Al2O3 and CuZn5 resulted from the diffusion of elements from the Zn-Al alloy. Several porosities distribute in the region near the interface of the Zn-Al alloy/interaction layer. The amount of shrinkage voids in the interacting layer is relevant to the penetration of Zn element into Al2O3p/6061Al composites which is a function of temperature. So it is necessary to lower heating temperature in order to limit the Zn penetration. | Jiuchun YAN, Zhiwu XU, Shixiong LU and Shiqin YANGState Key Laboratory of Advanced Welding Production Technology, Harbin Institute of Technology, Harbin 150001, China | 2004 | Journal of Materials Science & Technology2004，20，4： | 2 |
| 8 | Numerical Simulation of Water and Sand Blowouts When Penetrating Through Shallow Water Flow Formations in Deep Water Drilling显示文摘In this study, we applied a two-phase flow model to simulate water and sand blowout processes when penetrating shallow water flow(SWF) formations during deepwater drilling. We define ‘sand' as a pseudo-component with high density and viscosity, which can begin to flow with water when a critical pressure difference is attained. We calculated the water and sand blowout rates and analyzed the influencing factors from them, including overpressure of the SWF formation, as well as its zone size, porosity and permeability, and drilling speed(penetration rate). The obtained data can be used for the quantitative assessment of the potential severity of SWF hazards. The results indicate that overpressure of the SWF formation and its zone size have significant effects on SWF blowout. A 10% increase in the SWF formation overpressure can result in a more than 90% increase in the cumulative water blowout and a 150% increase in the sand blowout when a typical SWF sediment is drilled. Along with the conventional methods of well flow and pressure control, chemical plugging, and the application of multi-layer casing, water and sand blowouts can be effectively reduced by increasing the penetration rate. As such, increasing the penetration rate can be a useful measure for controlling SWF hazards during deepwater drilling. | REN Shaoran LIU Yanmin GONG Zhiwu YUAN Yujie YU Lu WANG Yanyong XU Yan DENG Junyu | 2018 | Journal of Ocean University of China2018，17，1： | 2 |
| 9 | Performance Evaluation of Public Bus Transportation by Using DEA Models and Shannon’s Entropy:An Example From a Company in a Large City of China显示文摘The purpose of this paper is to assess the operational efficiency of a public bus transportation via a case study from a company in a large city of China by using data envelopment analysis(DEA)model and Shannon’s entropy.This company operates 37 main routes on the backbone roads.Thus,it plays a significant role in public transportation in the city.According to bus industry norms,an efficiency evaluation index system is constructed from the perspective of both company operations and passenger demands.For passenger satisfaction,passenger waiting time and passenger-crowding degree are considered,and they are undesirable indicators.To describe such indicators,a superefficient DEA model is constructed.With this model,by using actual data,efficiency is evaluated for each bus route.Results show that the DEA model with Shannon’s entropy being combined achieves more reasonable results.Also,sensitivity analysis is presented.Therefore,the results are meaningful for the company to improve its operations and management. | Zicheng Liu Naiqi Wu Yan Qiao Zhiwu Li | 2021 | IEEE/CAA Journal of Automatica Sinica2021，8，4： | 2 |
| 10 | Numerical Modelling of Electroosmotic Driven Flow in Nanoporous Media by Lattice Boltzmann Method显示文摘 | Bo Li Wenning Zhou Yuying Yan Zhiwu Han Luquan Ren | 2013 | Journal of Bionic Engineering2013，10，1： | 2 |
| 11 | Effect of ultrasonic vibration on the grain refinement and SiC particle distribution in Zn-based composite filler metal 显示文摘 | Xu Zhiwu Yan Jiuchun Chen Wei | 2008 | Materials Letters2008，62，： | 1 |
| 12 | Ex- perimental Study of Ignition and Detonation Initiation in Two-Phase Valveless Pulse Detonation Engines显示文摘 | Wang Zhiwu Yan Chuanjun Zheng Longxi | 2009 | Com- bustion Science and Technology2009，181，10： | 1 |
| 13 | Microstructure characteristics and performance of dissimilar welds between magnesium alloy and aluminum formed by friction stirring显示文摘 | Jiuchun Yan Zhiwu Xu Zhiyuan Li Lei Li Shiqin Yang | 2005 | Scripta Materialia2005，，5： | 1 |
| 14 | Interface structure changes during vibration liquid phase bonding of SiC p /A356 composites in air显示文摘 | Huibin Xu Jiuchun Yan Zhiwu Xu Baoyou Zhang Shiqin Yang | 2005 | Composites Part A2005，，9： | 1 |
| 15 | Interface structure and strength of ultrasonic vibration liquid phase bonded joints of Al 2 O 3p /6061Al composites显示文摘 | Zhiwu Xu Jiuchun Yan Gaohui Wu Xiangli Kong Shiqin Yang | 2005 | Scripta Materialia2005，，7： | 1 |
| 16 | Large Curvature Folding Strategies of Butterfly Proboscis显示文摘Due to its real-time control,high folding ratio,and structure self-locking,flexible large curvature self-folding devices have broad application prospects,such as foldable human implants,flexible electronics,and flexible robots.Driven by this background,flexible large curvature folding butterfly(Polyura eudamippus)proboscises were studied in this work.The folding ratio of the proboscises was about 15.The curvature of coiled proboscises ranged from about 150 m_1 to 880 m The external and internal structures of the proboscises were studied by different methods.Three main strategies for large-curvature folding of proboscises were identified:a gradual decrease in thickness,a lower elastic modulus,and(most importantly)large numbers of regular corrugated cracks arranged on the surface.These corrugated cracks can effectively accommodate the coiled strain and provide space for the large curvature folding of proboscises.Finally,a 4D printed coiled sample with corrugated cracks was fabricated to mimic the proboscises stretching process.Large-curvature folding strategies,based on these proboscises,provide insights for the biomimetic design of artificial highly folded components. | Daobing Chen Honglie Song Qingping Liu Jie Gan Yang Liu Keyu Che' Chong Wang Shifeng Wen Yan Zhou Chunze Yan Junqiu Zhang Yusheng Shi Zhiwu Han | 2020 | Journal of Bionic Engineering2020，17，6： | 1 |
| 17 | Interface structure and mechanical performance of TLP bonded joints of AlzO3p/6061A1 composites using Cu/Ni composite interlayers 显示文摘 | Yan Jiuchun Xu Zhiwu Wu Gaohui | 2004 | Scripta Mate- rialia2004，，51： | 1 |
| 18 | Interface structure changes during liquid phase bonding of SiCp/ A356 composite in air 显示文摘 | XU Huibin YAN Jiuchun XU Zhiwu | 2006 | Composite A: Applied Science and Manufacturing2006，37，9： | 1 |
| 19 | Interface structure and mechanical performance of TLP bonded joints of Al2O3/6061Al composites using Cu/Ni composite interlayers 显示文摘 | Yan Jiuchun Xu Zhiwu Wu Gaohui | 2004 | Scipta Materialia2004，51，2： | 1 |
| 20 | Interface structure and mechanical performance of TLP bonded joints of Al2O3/6061A1 composites using Cu/ Ni composite interlayer 显示文摘 | YAN Jiuchun XU Zhiwu WU Gaohui | 2004 | Scripta Materiatia2004，51，2： | 1 |
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