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| 1 | Effects of high temperature on the microstructure and mechanical behavior of hard coal显示文摘Coal is a common porous sedimentary rock whose microstructure and mechanical behavior are often affected by high temperature.In order to deeply investigate the effect of high temperature on the structure and mechanical properties of coal,six groups of coal samples with different heating temperatures were prepared.Various testing methods,including ultrasonic test,scanning electron microscopy,nuclear magnetic resonance and uniaxial compression test,were used in this study.The results showed that the physical and chemical change processes of coal samples under high temperature can be divided into two stages:the stage of drying and degassing and the stage of pyrolysis of the coal matrix.With the increase of heating temperature,the total porosity of coal samples increases,while the integrity and the deformation resistance of coal samples decrease.In addition,the elastic modulus and uniaxial compressive strength of the coal sample decrease with the increase of heating temperature.The Poisson’s ratio decreases firstly and then increases with the increase of heating temperature. | Chengdong Su Jiadong Qiu Qiuhong Wu Lei Weng | 2020 | International Journal of Mining Science and Technology2020，30，5： | 11 |
| 2 | Fabrication of single-walled carbon nanotube-based highly sensitive gas sensors显示文摘A highly sensitive single-walled carbon nanotube(SWCNT)-based ammonia(NH3) gas detector is manufactured by orderly assembling SWCNT using the dielectrophoretical(DEP) technology.Atom force microscopy(AFM) and scanning electron microscopy(SEM) images revealed that SWCNTs were assembled between the microelectrodes.SWCNTs were affected by the electrophoretic force which was carried out by the related theoretical analysis in a nonuniform electric field.The SWCNT field effect transistors geometry was obtained.The electrical performance of NH3 gas sensor with the SWCNT field effect transistors geometry was tested before and after the adoption of NH3 at room temperature.Experimental results indicated that the efficient assembly of SWCNT was obtained by the applied alternating current voltage with frequency of 2 MHz and amplitude of 10 V.The SWCNTs-based gas sensor had high sensitivity to NH3,and the electrical conductance of NH3 gas sensor reduced two times after interaction with NH3.The SWCNTs surface gas molecules were removed by means of ultraviolet ray irradiation for 10 min.Hence,the fabricated NH3 gas sensor could be reversible.There is a clear evidence that the adsorption of NH3 on the SWCNT channel is easy to be realized.Our theoretical results are consistent with recent experiments. | XU Ke TIAN XiaoJun WU ChengDong LIU Jian LI MengXin SUN Ying WEI FaNan | 2013 | Science China(Technological Sciences)2013，56，1： | 4 |
| 3 | Active tension optimal control for WT wheelchair robot by using a novel control law for holonomic or nonholonomic systems显示文摘The characteristics of interaction between WT wheelchair robot and stair environments is analyzed and possible patterns of WT wheelchair robot during the stair-climbing process are summarized, with criteria to determine the pattern of the wheelchair robot proposed. Aiming at the complicated mechanism of WT wheelchair robot with holonomic constraints and combining it with the dynamic programming, namely the Hamilton-Jacobi equation, a new control law called active tension optimal control is presented for holonomic or nonholonomic robotic systems, based on which one can make the wheelchair robot with a holonomic or nonholonomic mechanism track the expected reference input of constraint forces of holonomic or nonholinomic constraints as well as track the expected reference input of the generalized coordinate of each joint. The module STATEFLOW in MATLAB is used to simulate the entire stair-climbing process of WT wheelchair robot, and comparison is made between the output curves of each joint and the tension of the track and the expected reference input curves, which verifies the effectiveness of the proposed control law. | WANG Jian WANG Ting YAO Chen LI XiaoFan WU ChengDong | 2014 | Science China(Information Sciences)2014，57，11： | 3 |
| 4 | Study on the large-scale assembly and fabrication method for SWCNTs nano device显示文摘The large-scale assembly and fabrication method for single-walled carbon nanotube(SWCNT) nano devices was implemented.Assembly of SWCNT field effect transistor(FET) was realized by floating potential dielectrophoresis approach.The simulation of floating potential distribution of the chip was performed by comsol multiphysics coupling software.Six hundred devices were assembled on the area of less than one square centimeter.The fabricated devices were characterized by atomic force microscopy and scanning electron microscopy.The experimental results showed that large-scale assembly had been realized,and the success rate of ideal assembly for SWCNT FET had been assessed. | XU Ke TIAN XiaoJun WU ChengDong LIU Jian LI MengXin DONG ZaiLi | 2013 | Science China Chemistry2013，56，3： | 3 |
| 5 | High strength and high electrical conductivity Cu–Cr system alloys manufactured by hot rolling–quenching process and thermomechanical treatments显示文摘 | Chengdong Xia Wan Zhang Zhanyuan Kang Yanlin Jia Yifeng Wu Rui Zhang Genying Xu Mingpu Wang | 2012 | Materials Science & Engineering A2012，，： | 2 |
| 6 | Dual-Branch-UNet: A Dual-Branch Convolutional Neural Network for Medical Image Segmentation显示文摘In intelligent perception and diagnosis of medical equipment,the visual and morphological changes in retinal vessels are closely related to the severity of cardiovascular diseases(e.g.,diabetes and hypertension).Intelligent auxiliary diagnosis of these diseases depends on the accuracy of the retinal vascular segmentation results.To address this challenge,we design a Dual-Branch-UNet framework,which comprises a Dual-Branch encoder structure for feature extraction based on the traditional U-Net model for medical image segmentation.To be more explicit,we utilize a novel parallel encoder made up of various convolutional modules to enhance the encoder portion of the original U-Net.Then,image features are combined at each layer to produce richer semantic data and the model’s capacity is adjusted to various input images.Meanwhile,in the lower sampling section,we give up pooling and conduct the lower sampling by convolution operation to control step size for information fusion.We also employ an attentionmodule in the decoder stage to filter the image noises so as to lessen the response of irrelevant features.Experiments are verified and compared on the DRIVE and ARIA datasets for retinal vessels segmentation.The proposed Dual-Branch-UNet has proved to be superior to other five typical state-of-the-art methods. | Muwei Jian Ronghua Wu Hongyu Chen Lanqi Fu Chengdong Yang | 2023 | Computer Modeling in Engineering & Sciences2023，，10： | 2 |
| 7 | Global shape reconstruction of nano grid with singly fixed camera显示文摘Depth from defocus(DFD),as a typical shape reconstruction method,has been widely researched in most recent years.However,all the existing DFD algorithms require at least two defocused images with different camera parameters.Unfortunately,in micro/nano manipulation,any change on visual sensor's parameters is absolutely forbidden.Therefore,a novel DFD method to reconstruct the shape of a nano grid on micro/nano scale is researched in this paper.First,the blurring imaging model is constructed with the relative blurring and the diffusion equation.Second,the relationship between depth and blurring is discussed from four aspects.Subsequently,depth measurement problem is transformed into an optimization issue which is solved using the gradient flow algorithm.Finally,experiment results and error analysis are conducted to show the feasibility and effectiveness of the proposed method. | WEI YangJie WU ChengDong DONG ZaiLi | 2011 | Science China(Technological Sciences)2011，54，4： | 2 |
| 8 | Modeling of nano piezoelectric actuator based on block matching algorithm with optimal block size显示文摘In order to model the hysteresis behavior of a nano piezoelectric actuator(PA)on nano scale in a real time system,a new hysteresis modeling method based on an improved sub-pixel blocking matching algorithm with an optimal block size is proposed in this paper.First,Preisach model is introduced to model the hysteresis behavior of a piezoelectric actuator.Then,a real time block matching algorithm is researched and its block size is optimized with a standard object.Finally,experiments are performed with respect to a nanometer movement platform system,and the results show the feasibility and validity of the sub-pixel estimation based block matching algorithm and its application in modeling the hysteresis behavior of PA. | WEI YangJie WU ChengDong | 2013 | Science China(Technological Sciences)2013，56，11： | 2 |
| 9 | A coor- dinated control strategy for stable walking of biped robot with heterogeneous legs 显示文摘 | Wang Fei Wu Chengdong Xu Xinhe | 2009 | Industrial Robot- ics : An International Journal2009，36，5： | 1 |
| 10 | Handgesture recognition based on Fourier descriptor-BP显示文摘 | Tan Wenjun Wu Chengdong Zhao Shuying | 2009 | NeuralNetwork Journal of Northeastern University(NaturalScience):2009，120，9： | 1 |
| 11 | of the International Conference of Embedded Systems显示文摘 | Chengdong Wu Baizhang Cong The Application of MCU for Secu- rity Alarm System The Proc | 2001 | 37(4) :699-7032001，37，4： | 1 |
| 12 | High strength and high electrical conductivity Cu–Cr system alloys manufactured by hot rolling–quenching process and thermomechanical treatments显示文摘 | Chengdong Xia Wan Zhang Zhanyuan Kang Yanlin Jia Yifeng Wu Rui Zhang Genying Xu Mingpu Wang | 2012 | Materials Science & Engineering A2012，，： | 1 |
| 13 | The rough set theory and applications 显示文摘 | WU Chengdong YUE Yong LI mengxin | 2004 | Engineering Computations2004，21，5： | 1 |
| 14 | Hand gesture recognition based on Fourier descriptor-BP显示文摘 | Tan Wenjun Wu Chengdong Zhao Shuying | 2009 | Neural Network Journal of Northeastern University:Natural Science2009，120，9： | 1 |
| 15 | In situ pH-d-ecrease induced gelation of carboxymethylated konjac glucomannan / sodium alginate显示文摘 | Gao Shanjun Wu Chengdong Nishinari Katsuyoshi | 2008 | Appl Polym Sci2008，108，5： | 1 |
| 16 | An Improved RSS1 Meas- urement in Wireless Sensor Networks 显示文摘 | Zheng Jungang Wu Chengdong Chu Hao | 2011 | Procedia Engineering2011，，15： | 1 |
| 17 | An automatic compensation method on compression effect and surface elasticity measurement based on the deflection signal of AFM显示文摘Atomic force microscope(AFM),as an important instrument in micro/nano operation,has been widely used to measure sample’s height information.However,the so called compression effect,due to force aroused from the contact of AFM tip with a sample surface,would result in imprecision of the surface’s height measurement,i.e.,the measured height is lower than expected.Up to now,there is not any effective and rapid method to attenuate this kind of measurement error.Thus,in this paper,an algorithm to obtain high accurate height measurement is proposed.Firstly,the concept of force curve is used to analyze the basic principle of the compression effect.Secondly,an automatic compensation method by fusing the height signal and the deflection signal is proposed.The proposed algorithm can also be used to obtain a surface elasticity image.Finally,in order to validate the proposed method,two experiments are conducted with respect to mutli-wall nano-carbon tubes on a silicon substrate and graphemes on a mica substrate. | WEI YangJie WU ChengDong DONG ZaiLi | 2011 | Science China(Technological Sciences)2011，54，9： | 1 |
| 18 | The rough set theory and applications显示文摘 | CHENGDONG WU YONG YUE MENGXIN LI etc | 2004 | Engineering Computations2004，21，5： | 1 |
| 19 | Electron-ion collider in China显示文摘Lepton scattering is an established ideal tool for studying inner structure of small particles such as nucleons as well as nuclei.As a future high energy nuclear physics project,an Electron-ion collider in China(EicC)has been proposed.It will be constructed based on an upgraded heavy-ion accelerator,High Intensity heavy-ion Accelerator Facility(HIAF)which is currently under construction,together with a new electron ring.The proposed collider will provide highly polarized electrons(with a po-larization of 80%)and protons(with a polarization of 70%)with variable center of mass energies from 15 to 20 GeV and the luminosity of(2–3)×1033 cm^(−2)·s^(−1).Polarized deuterons and Helium-3,as well as unpolarized ion beams from Carbon to Uranium,will be also available at the EicC.The main foci of the EicC will be precision measurements of the structure of the nucleon in the sea quark region,including 3D tomography of nucleon;the partonic structure of nuclei and the parton interaction with the nuclear environment;the exotic states,especially those with heavy flavor quark contents.In addition,issues fundamental to understanding the origin of mass could be addressed by measurements of heavy quarkonia near-threshold production at the EicC.In order to achieve the above-mentioned physics goals,a hermetical detector system will be constructed with cutting-edge technologies.This document is the result of collective contributions and valuable inputs from experts across the globe.The EicC physics program complements the ongoing scientific programs at the Jefferson Laboratory and the future EIC project in the United States.The success of this project will also advance both nuclear and particle physics as well as accelerator and detector technology in China. | Daniele PAnderle Valerio Bertone Xu Cao Lei Chang Ningbo Chang Gu Chen Xurong Chen Zhuojun Chen Zhufang Cui Lingyun Dai Weitian Deng Minghui Ding Xu Feng Chang Gong Longcheng Gui Feng-Kun Guo Chengdong Han Jun He Tie-Jiun Hou Hongxia Huang Yin Huang KrešImir KumeričKi LPKaptari Demin Li Hengne Li Minxiang Li Xueqian Li Yutie Liang Zuotang Liang Chen Liu Chuan Liu Guoming Liu Jie Liu Liuming Liu Xiang Liu Tianbo Liu Xiaofeng Luo Zhun Lyu Boqiang Ma Fu Ma Jianping Ma Yugang Ma Lijun Mao Cédric Mezrag HervéMoutarde Jialun Ping Sixue Qin Hang Ren Craig DRoberts Juan Rojo Guodong Shen Chao Shi Qintao Song Hao Sun PawełSznajder Enke Wang Fan Wang Qian Wang Rong Wang Ruiru Wang Taofeng Wang Wei Wang Xiaoyu Wang Xiaoyun Wang Jiajun Wu Xinggang Wu Lei Xia Bowen Xiao Guoqing Xiao Ju-Jun Xie Yaping Xie Hongxi Xing Hushan Xu Nu Xu Shusheng Xu Mengshi Yan Wenbiao Yan Wencheng Yan Xinhu Yan Jiancheng Yang Yi-Bo Yang Zhi Yang Deliang Yao Zhihong Ye Peilin Yin C-PYuan Wenlong Zhan Jianhui Zhang Jinlong Zhang Pengming Zhang Yifei Zhang Chao-Hsi Chang Zhenyu Zhang Hongwei Zhao Kuang-Ta Chao Qiang Zhao Yuxiang Zhao Zhengguo Zhao Liang Zheng Jian Zhou Xiang Zhou Xiaorong Zhou Bingsong Zou Liping Zou | 2021 | Frontiers of physics2021，16，6： | 1 |
| 20 | A rough set GA-based hybrid method for robot path planning显示文摘 | Wu Chengdong Zhang Ying Li Mengxin | | 0，，01： | 1 |
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