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| 1 | An Accurate and Real-time Method of Self-blast Glass Insulator Location Based on Faster R-CNN and U-net with Aerial Images显示文摘This paper proposes a new deep learning framework for the location of broken insulators(in particular the self-blast glass insulator)in aerial images.We address the broken insulators location problem in a low signal-noise-ratio(SNR)setting.We deal with two modules:1)object detection based on Faster R-CNN,and 2)classification of pixels based on U-net.For the first time,our paper combines the above two modules.This combination is motivated as follows:Faster R-CNN is used to improve SNR,while the U-net is used for classification of pixels.A diverse aerial image set measured by a power grid in China is tested to validate the proposed approach.Furthermore,a comparison is made among different methods and the result shows that our approach is accurate in real time. | Zenan Ling Dongxia Zhang Robert C.Qiu Zhijian Jin Yuhang Zhang Xing He Haichun Liu | 2019 | CSEE Journal of Power and Energy Systems2019，5，4： | 22 |
| 2 | Decision Support System Based on Set Pair Analysis and Its Application显示文摘The paper has made a comparison among some decision models of G-DSS.Based on Set Pair Analysis,it integrates the advantages and shortcomings of decision models of G-DSS and puts forward SP-DSS.Furthermore,the principle of SP-DSS to make decision as well as its application to diagnose sick systems is expounded,and the program flow chart of SP-DSS is presented. | Zhou Zenan(School of Computer and Information Technology,Beijing Jiaotong University. Beijing 100044 China) | 2007 | 工程科学(英文版)2007，5，3： | 7 |
| 3 | Development of a redundant anthropomorphic hydraulically actuated manipulator with a roll-pitch-yaw spherical wrist显示文摘The demand for redundant hydraulic manipulators that can implement complex heavy-duty tasks in unstructured areas is increasing;however,current manipulator layouts that remarkably differ from human arms make intuitive kinematic operation challenging to achieve.This study proposes a seven-degree-of-freedom(7-DOF)redundant anthropomorphic hydraulically actuated manipulator with a novel roll-pitch-yaw spherical wrist.A hybrid series-parallel mechanism is presented to achieve the spherical wrist design,which consists of two parallel linear hydraulic cylinders to drive the yaw/pitch 2-DOF wrist plate connected serially to the roll structure.Designed as a 1R£RRR-1S£U mechanism(“R”,“P”,“S”,and“U”denote revolute,prismatic,spherical,and universal joints,respectively;the underlined letter indicates the active joint),the 2-DOF parallel structure is partially decoupled to obtain simple forward/inverse kinematic solutions in which a closed-loop subchain“R£RR”is included.The 7-DOF manipulator is then designed,and its third joint axis goes through the spherical center to obtain closed-form inverse kinematic computation.The analytical inverse kinematic solution is drawn by constructing self-motion manifolds.Finally,a physical prototype is developed,and the kinematic analysis is validated via numerical simulation and test results. | Min CHENG Zenan HAN Ruqi DING Junhui ZHANG Bing XU | 2021 | Frontiers of Mechanical Engineering2021，16，4： | 5 |
| 4 | Ultrathin, flexible, and high-strength Ni/Cu/metallic glass/Cu/Ni composite with alternate magneto-electric structures for electromagnetic shielding显示文摘Electromagnetic interference(EMI)shielding materials with ultrathin,flexible,superior mechanical and thermal management properties are highly desirable for smart and wearable electronics.Here,ultrathin and flexible Ni/Cu/metallic glass/Cu/Ni(Ni/Cu/MG)multilayer composite with alternate magnetic and electrical structures was designed via facial electroless plating of Cu and Ni on an Fe-based metallic glass.The resultant 0.02 mm-thick Ni/Cu/MG composite displays a superior EMI shielding effectiveness(EMI SE)of 35 dB and a great EMI SE/t of 1750 dB/mm,which is greater than those of composites with monotonous multilayer or homogeneous structures.The improved EMI SE originates from the massive ohmic losses,the enhanced internal reflection/absorption,and the abundant interfacial polarization loss.Particularly,Ni/Cu/MG exhibits a high tensile strength of up to 1.2 GPa and outstanding mechanical stability,enabling the EMI SE remains unchanged after 10,000 times of bending.Moreover,Ni/Cu/MG has excellent Joule heating characteristics and thermal stability,which is very suitable for heating components of wearable hyperthermia devices. | Zenan Ma Jiawei Li Jijun Zhang Aina He Yaqiang Dong Guoguo Tan Mingqiang Ning Qikui Man Xincai Liu | 2021 | Journal of Materials Science & Technology2021，，22： | 3 |
| 5 | Predicting the Transition between Upper and Lower Bainite via a Gibbs Energy Balance Approach显示文摘The transition temperature between upper bainite and lower bainite is calculated with an extended Gibbs energy balance model, which is able to quantitatively describe the evolution of carbon supersaturation within bainitic ferrite sheaves during the entire thickening process. The nucleation rate of intra-lath cementite precipitation on a dislocation is calculated based on of the degree of carbon supersaturation.Upper bainite and lower bainite are thus distinguished by the effective nucleation density and therefore a numerical criterion can be set to define the transition. The model is applied to Fe-xC-1Mn/2Mn/1 Mo ternary alloys. Results show that the transition temperature increases with bulk carbon content at lower carbon concentration but decreases in the higher carbon region. This prediction agrees very well with the experimental observations in Mn and Mo alloyed systems. Moreover, the highest transition temperature and the carbon content at which it occurs in the Fe-xC-2Mn system are in good agreement with reported experimental data. The inverse 'V' shaped character of the carbon concentration–transition temperature curve indicates two opposite physical mechanisms operating at the same time. An analysis is carried out to provide an explanation. | Zenan Yang Wei Xu Zhigang Yang Chi Zhang Hao Chen Sybrand van der Zwaag | 2017 | Journal of Materials Science & Technology2017，33，12： | 2 |
| 6 | Design Fe-based Eutectic Medium-Entropy Alloys Fe_2NiCrNb_x显示文摘High-entropy alloys have attracted broad research interests due to their unique and intriguing mechanical properties. As a category of high-entropy alloys, eutectic high-entropy alloys combine the advantages of eutectic and high-entropy alloys, with excellent mechanical properties and casting properties. Some eutectic high-entropy alloys have been developed and shown exciting properties. In this paper, based on the physical metallurgy of eutectic high-entropy alloy, medium-entropy alloy Fe_(2)NiCrNb_(x) was designed. The as-cast alloy is composed of FCC and Laves phases, Nb element promotes the formation of primary Laves phase, and the hardness of the alloy increases with the increase in Nb element. Among the four alloys, the eutectic chemical composition at eutectic point is Fe_(2)NiCrNb_(0.34);the alloy has a good strength and plastic balance. The ultimate comprehensive strength is 2267 MPa, and the fracture strain is 30.8%. The experiment data and analyses identified the eutectic points and the excellent mechanical behavior. Moreover, the expensive Co element was replaced by Fe element. This cheap medium-entropy alloy has promising prospect in the consideration of the cost performance ratio. | Jiafen Song Zishu Chai Jian Zheng Qingfeng Wu Feng He Zenan Yang Junjie Li Jincheng Wang Haiou Yang Zhijun Wang | 2021 | Acta Metallurgica Sinica(English Letters)2021，34，8： | 2 |
| 7 | Egg-like magnetically immobilized nanospheres: A long- lived catalyst model for the hydrogen transfer reaction in a continuous-flow reactor显示文摘新奇像鸡蛋的 nanosphere 作为长寿催化剂被设计并且被描述为 Fe 3 O 4@nSiO2-NH2-Fe2 O 3 xBi 2 O 3@mSiO2 。催化剂用修改的圣被准备 ? 有没有模板的保护表面的蚀刻的 ber 方法。催化剂粒子由磁性的 Fe 3 是的 O 4 核心蛋黄,忍受活跃 Fe 2 O 3 xBi 2 卵白人,和外部 mesoporous 硅石作为卵轰炸的 O 3 种类。它在一张改正床在 nitro aromatics 的催化减小展出优秀表演到相应苯胺连续流动的反应堆。反应能在学习被做的 80 onal 被执行。题目是怀疑有 TB 感染的病人。在怀疑的区域的整个身体和 SPECT-CT 成像被做 1 和 4 ? 在 370-555 的注射以后的 h ? MBq 99m Tc-ethambu 吗?? | Yongjian Ai Zenan Hu Zixing Shao Li Qi Lei Liu Junjie Zhou Hongbin Sun Qionglin Liang | 2018 | Nano Research2018，11，1： | 2 |
| 8 | Immuno- logical characteristics of nonpregnant women with unexplained recurrent spontaneous abortion who under went patemml lym- phocytes immunization 显示文摘 | MALINOWSKI A WILCAYNSKI J ZENAN K | 1998 | Zentralbl Gynakol1998，120，10： | 1 |
| 9 | A multi-step induced strategy to fabricate core-shell Pt-Ni alloy as symmetric electrocatalysts for overall water splitting显示文摘Devising an electrocatalyst with brilliant efficiency and satisfactory durability for hydrogen production is of considerable demand,especially for large-scale application.Herein,we adopt a multi-step consequential induced strategy to construct a bifunctional electrocatalyst for the overall water splitting.Graphene oxide(GO)was used as a carbon matrix and in situ oxygen source,which was supported by the octahedral PtNi alloy to form the PtxNiy-GO precursor.When calcinating in Ar atmosphere,the oxygen in GO induced the surface segregation of Ni from the PtNi octahedron to form a core-shell structure of Ptx@Niy.Then,the surface-enriched Ni continuously induced the reformation of C in reduced graphene oxide(rGO)to enhance the degree of graphitization.This multi-step induction formed a nanocatalyst Pt_(x)@Ni_(y)-rGO which has very high catalytic efficiency and stability.By optimizing the feeding ratio of PtNi(Pt:Ni=1:2),the electrolytic overall water splitting at 10 mA·cm^(-2) can be driven by an electrolytic voltage of as low as 1.485 V,and hydrogen evolution reaction(HER)only needs an overpotential of 37 mV in 1.0 M KOH aqueous solution.Additionally,the catalyst exhibited consistent existence form in both HER and oxygen evolution reaction(OER),which was verified by switching the anode and cathode of the cell in the electrolysis of water.This work provides a new idea for the synthesis and evaluation of the bifunctional catalysts for water splitting. | Wenjuan Xu Jinfa Chang Yinggang Cheng Hongqi Liu Jifan Li Yongjian Ai Zenan Hu Xinyue Zhang Yiming Wang Qionglin Liang Yang Yang Hongbin Sun | 2022 | Nano Research2022，15，2： | 1 |
| 10 | Interaction of nano-SiO2with portlandite at interface between hardened cement paste and aggregate显示文摘 | ZHANG Zenan KONG Deyu | 2007 | Constr Build Mater2007，21，3： | 1 |
| 11 | Winter wheat leaf area index inversion by the genetic algorithms neural network model based on SAR data显示文摘The leaf area index(LAI)is an important agroecological physiological parameter affecting vegetation growth.To apply the genetic algorithms neural network model(GANNM)to the remote sensing inversion of winter wheat LAI throughout the growth cycle and based on GaoFen-3 Synthetic aperture radar(GF-3 SAR)images and GaoFen-1 Wide Field of View(GF-1 WFV)images,the Xiangfu District in the east of Kaifeng City,Henan Province,was selected as the testing region.Winter wheat LAI data from five growth stages were combined,and optical and microwave polarization decomposition vegetation index models were used.The backscattering coefficient was extracted by modified water cloud model(MWCM),and the LAI was obtained by MWCM inversion as input factors to construct GANNM to invert LAI.The root mean square error(RMSE)and determination coefficient(R2)were used as evaluation indicators of the model.The fitting accuracy of winter wheat LAI in five growth stages by GANNM inversion was better than that of the BP neural network model;the R2 was higher than 0.8,and RMSE was lower than 0.3,indicating that the model could accurately invert the growth status of winter wheat in five growth stages. | Xiaoping Lu Xiaoxuan Wang Xiangjun Zhang Jun Wang Zenan Yang | 2022 | International Journal of Digital Earth2022，15，1： | 1 |
| 12 | Influence of nano-SiO2 addition on properties of hardened cement paste as compared with silica fume 显示文摘 | Qing Y Zenan Z Deyu K | 2007 | Construction and Building Materials2007，21，3： | 1 |
| 13 | COX-2 regulates E-cadherin expression through the NF-κB/Snail signalingpathway in gastric cancer显示文摘 | Zhaofeng Chen Min Liu Xiaojun Liu Shanshan Huang Linlin Li Bo Song Hailong Li Qian Ren Zenan Hu Yongning Zhou Liang Qiao | 2013 | International Journal of Molecular Medicine2013，，1： | 1 |
| 14 | Finite-time control of formation system for multiple flight vehicles subject to actuator saturation显示文摘This paper investigates the problem of formation tracking control for multiple flight vehicle(MFV) system considering actuator saturation constraints. First, the formation tracking control model is established. Then, the problem of formation control of the MFV system is converted to the convergence of a dynamical system, which is obtained by using the differential geometry theory.A class of saturation functions is introduced, and on this basis a second-order finite-time formation control protocol is developed.With the help of the homogeneous theory and Lasalle's invariance principle, it is theoretically proved that the designed formation protocol could complete the formation task in finite time, and the control inputs are shown to remain within their available actuating limits. Finally, simulations are performed to verify the effectiveness of the scheme. | ZHAO Enjiao ZHONG Zenan ZHENG Xin | 2020 | Journal of Systems Engineering and Electronics2020，31，5： | 1 |
| 15 | A comparative study on the pozzolanic activity between nano-SiO2 and silica fume显示文摘 | Ye Qing Ph D Zhang Zenan Sheng Li Chen Rongshen | 2006 | Journal of Wuhan University of Technology - Mater Sci Ed2006，，3： | 1 |
| 16 | Charaeters of sliding bearing of scroll compressor 显示文摘 | Qiao Zhongtiang Xiong Zenan | 1994 | Compressor Technology1994，128，： | 1 |
| 17 | A comparative study on the pozzolanic activity between nano-SiO2 and silica fume显示文摘 | Ye Qing Ph D Zhang Zenan Sheng Li Chen Rongshen | 2006 | Journal of Wuhan University of Technology - Mater Sci Ed2006，，3： | 1 |
| 18 | COX-2 regulates E-cadherin expression through the NF-κB/Snail signalingpathway in gastric cancer显示文摘 | Zhaofeng Chen Min Liu Xiaojun Liu Shanshan Huang Linlin Li Bo Song Hailong Li Qian Ren Zenan Hu Yongning Zhou Liang Qiao | 2013 | International Journal of Molecular Medicine2013，，1： | 1 |
| 19 | A comparative study on the pozzolanic activity between nano-SiO2 and silica fume显示文摘 | Ye Qing Ph D Zhang Zenan Sheng Li Chen Rongshen | 2006 | Journal of Wuhan University of Technology - Mater Sci Ed2006，，3： | 1 |
| 20 | A comparative study on the pozzolanic activity between nano-SiO2 and silica fume显示文摘 | Ye Qing Ph D Zhang Zenan Sheng Li Chen Rongshen | 2006 | Journal of Wuhan University of Technology - Mater Sci Ed2006，，3： | 1 |
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