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14th International Conference on Fracture, ICF 2017

作者： Daiyang, Gao Weixing, Yao Key Laboratory of Fundamental Science National Denfense-Advanced Design Technology of Flight Vehicle Nanjing University of Aeronautics and Astronautics Nanjing210016 China State Key Laboratory of Mechanics and Control of Mechanical Structures Nanjing University of Aeronautics and Astronautics Nanjing210016 China

The definition and calculation formula of the mean square stress concentration factor were proposed based on the root mean square(RMS) of stress at the most dangerous point. The examples proved that the proposed formula commendably represented the stress concentration content of the notched specimen under dynamic load. Considering the distribution characteristics of the RMS stress at the notch root, the dynamic fatigue notch factor was calculated and compared with different formulas. The nominal stress method of vibration fatigue lifetime analysis on notched specimen was proposed, and two typical examples showed that this method predicted the vibration fatigue lifetime of notched specimen well. © 2017 Chinese Society of Theoretical and Applied Mechanics. All Rights Reserved.

关键词： Dynamic loads

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A modified TCD theory based on high-stressed-volume concept 14

A modified TCD theory based on high-stressed-volume concept

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14th International Conference on Fracture, ICF 2017

作者： Peng, Luo Yao, Weixing Key Laboratory of Fundamental Science for National Defense-Advanced Design Technology of Flight Vehicle Nanjing University of Aeronautics and Astronautics Nanjing210016 China State Key Laboratory of Mechanics and Control of Mechanical Structures Nanjing University of Aeronautics and Astronautics Nanjing210016 China

A new method is proposed in this paper to expand the application of TCD to medium-cycle fatigue and low-cycle fatigue, which is based on the High-Stressed-Volume(HSV) concept proposed by Kuguel. The fatigue failure mechanism of HSV is that high-stressed points in root of notch contribute more to the probability of fatigue crack initiation. Those parts whose stress exceeds the critical stress should be considered as the fatigue damage region. An experiment has been carried out by authors to check the method in predicting fatigue limit. Moreover, the ability of this method to predict fatigue life of notched components is demonstrated by the experimental data sets taken from the literatures. It is seen that the predicted fatigue life always falls within the scatter band of the data derived from parent material. © 2017 Chinese Society of Theoretical and Applied Mechanics. All Rights Reserved.

关键词： Failure (mechanical)

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Small-scale spatial analysis of intermediate and definitive hosts of Angiostrongylus cantonensis

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Infectious Diseases of Poverty 2018年第1期7卷 1053-1063页

作者： Qiu-An Hu Yi Zhang Yun-Hai Guo Shan Lv Shang Xia He-Xiang Liu Yuan Fang Qin Liu Dan Zhu Qi-Ming Zhang Chun-Li Yang Guang-Yi Lin National Institute of Parasitic Diseases Chinese Center for Disease Control and PreventionChinese Center for Tropical Diseases ResearchShanghai 200025China WHO Collaborating Centre for Tropical Diseases National Center for International Research on Tropical DiseasesMinistry of Science and TechnologyShanghai 200025China Key Laboratory of Parasite and Vector Biology Ministry of HealthShanghai 200025China Centre for Disease Control and Prevention of Guangdong Province Guangzhou 510300China Shanghai Medical College Fudan UniversityShanghai 200032China

Background:Angiostrongyliasis is a food-borne parasitic *** infection is caused by infection with the third-stage larvae of Angiostrongylus *** life cycle of *** involves rodents as definitive hosts and molluscs as intermediate *** study aims to investigate on the infection status and characteristics of spatial distribution of these hosts,which are key components in the strategy for the prevention and control of ***:Three villages from Nanao Island,Guangdong Province,China,were chosen as study area by stratified random *** density and natural infection of Pomacea canaliculata and various rat species were surveyed every three months from December 2015 to September 2016,with spatial correlations of the positive *** and the infection rates analysed by ArcGIS,scan statistics,ordinary least squares(OLS)and geographically weighted regression(GWR)***:A total of 2192 *** specimens were collected from the field,of which 1190 were randomly chosen to be examined for third-stage larvae of ***-two Angiostrongylus-infected snails were found,which represents a larval infection rate of 6.1%(72/1190).In total,110 rats including 85 Rattus norvegicus,10 ***,one *** and 14 Suncus murinus were captured,and 32 individuals were positive(for adult worms),representing an infection rate of 29.1%of the definitive hosts(32/110).Worms were only found in *** and ***,representing a prevalence of 36.5%(31/85)and 10%(1/10),respectively in these species,but none in *** and ***,despite testing as many as 32 of the latter ***,spatial correlation and spatial clusters in the spatial distribution of positive *** and positive rats *** of the spatial variability of the host infection rates came from spatial *** spatial clusters with respect to positive *** were identified,but on

关键词： Angiostrongylus cantonensis Snail intermediate host Pomacea canaliculata Rat definitive host Spatial analysis

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Quasi full information feedback control law of linear systems

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IFAC-PapersOnLine 2017年第1期50卷 904-909页

作者： Yu S. Wang J. Kim J.-S. Chen H. Allgöwer F. State Key Laboratory of Automotive Simulation and Control Jilin University Changchun 130012 China Department of Control Science and Engineering Jilin University Changchun 130012 China Department of Electrical and Information Engineering Seoul National University of Science and Technology Seoul 139-743 South Korea Institute for Systems Theory and Automatic Control University of Stuttgart Germany

In this paper, disturbance observer based quasi full information feedback control law of linear systems is proposed, where the feedback control law is with direct measurement of the plant states and the estimation of the disturbances. It shows that the system under control is input to state stable from the derivative of the disturbances to the system states provided that the given matching condition is satisfied. Furthermore, the effect of the disturbances can be compensated entirely if the disturbance is constant. The proposed scheme is verified by a simple numerical example and the stability control of four-wheel steering vehicle. © 2017

关键词： disturbance observer disturbance rejection input-to-state stability linear systems robust control

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Correction to: Modification of carbon felt anode with graphene/Fe2O3 composite for enhancing the performance of microbial fuel cell

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Bioprocess and biosystems engineering 2020年第3期43卷 383页

作者： Lin Fu Haoqi Wang Qiong Huang Tian-Shun Song Jingjing Xie State Key Laboratory of Materials-Oriented Chemical Engineering Nanjing Tech University Nanjing 211816 People's Republic of China. College of Biotechnology and Pharmaceutical Engineering Nanjing Tech University Nanjing 211816 People's Republic of China. Jiangsu Collaborative Innovation Center of Atmospheric Environment and Equipment Technology Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control (AEMPC) Nanjing University of Information Science and Technology Nanjing 210044 People's Republic of China. State Key Laboratory of Materials-Oriented Chemical Engineering Nanjing Tech University Nanjing 211816 People's Republic of China. tshsong@***. College of Biotechnology and Pharmaceutical Engineering Nanjing Tech University Nanjing 211816 People's Republic of China. tshsong@***. Jiangsu Collaborative Innovation Center of Atmospheric Environment and Equipment Technology Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control (AEMPC) Nanjing University of Information Science and Technology Nanjing 210044 People's Republic of China. tshsong@***. State Key Laboratory of Materials-Oriented Chemical Engineering Nanjing Tech University Nanjing 211816 People's Republic of China. xiej@***. College of Biotechnology and Pharmaceutical Engineering Nanjing Tech University Nanjing 211816 People's Republic of China. xiej@***. Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM) Nanjing 211816 People's Republic of China. xiej@***.

It has been brought to our attention that in our article, explanations about cable bacteria are not rigorous. We apologize for these and note the specific reporting issues and errors below, with their corrections.

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Impact of erosion‐induced land degradation on rainfall infiltration in different types of soils under field simulation

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Land Degradation & Development 2019年第14期30卷

作者： Yujie Wei Xinliang Wu Chongfa Cai Jie Wang Jinwen Xia Junguang Wang Zhonglu Guo Zaijian Yuan Key Laboratory of Arable Land Conservation (Middle and Lower Reaches of Yangtze River) of the Ministry of Agriculture College of Resources and Environment Huazhong Agricultural University Wuhan 430070 PR China Guangdong Key Laboratory of Integrated Agro‐environmental Pollution Control and Management Guangdong Institute of Eco‐environmental Science and Technology Guangzhou 510650 PR China

Land degradation induced by water erosion is a worldwide problem for sustainable agriculture. Erosion results in the alteration of soil properties to a varying extent that depends on soil type. However, limited attempts have been made to assess the impact of erosion‐induced land degradation on soil infiltration on a wide range of soil types. Herein, field rainfall simulation experiments were performed on prewetted bare heavy‐textured soils at three erosion degrees (no, moderate, and very severe) for five types of soils (Calcic Luvisol, Ferric Luvisol, Plinthic Alisol, Plinthic Acrisol, and Acric Ferralsol). Soil infiltration rate was determined at two rainfall intensities (45 and 90 mm hr −1 ) and 3‐min intervals for 60‐min runoff duration on microplots (3 m long × 0.8 m wide, 10° slope). At the low rainfall intensity, the impact of erosion‐induced land degradation on rainfall infiltration increased from Calcic Luvisol to Plinthic Acrisol, and the steady state infiltration rate ( f c ) was well characterized by bulk density and 1.4‐nm intergrade minerals (Adj‐ R 2 = 0.79, p < 0.001). At the high rainfall intensity, f c was negatively related with illite solely (Adj‐ R 2 = 0.25, p < .05) and generally increased with an increase of erosion severity; the impact of erosion‐induced land degradation on f c was magnified for Calcic Luvisol and Acric Ferralsol but lessened for other soil types. Collectively, the impact of erosion‐induced land degradation generally increased with increased soil structural stability at the low rainfall intensity and was determined by the interaction between soil structure and rainfall at the high rainfall intensity.

关键词： field rainfall simulation land degradation by erosion soil infiltration soil structural stability

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29.1:Invited Paper:A Study on the Micro-Lens Arrays Combination based Optical Film for Optical Field Optimized Projection Display

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SID Symposium Digest of Technical Papers 2019年第S1期50卷

作者： Liang Ding Zhou Li Dongbian Su Bingang Guo Pengfei Wang Dengji Guo Cai Liu Dept. of R&D Shenzhen Holokook Technology Co. Ltd Shenzhen China Key Laboratory of In-fiber Integrated Optics of the Ministry of Education College of Science Harbin Engineering University Harbin China Guangdong Provincial Key Laboratory of Micro/Nano Optomechatronics Engineering College of Mechatronics and Control Engineering Shenzhen University Shenzhen China Shenzhen Institute for Quantum Science and Engineering Dept. of Physics Southern University of Science and Technology Shenzhen China

Owning to the fast development of projection technologies, the large-scale projection has great potential application for various viewing circumstances in open spaces. This paper reports a novel type of optical imaging film (G2-HK-FP) which comprised of a combination of micro-lens arrays of different sizes and an ambient light rejection design. This film exhibited comparable displaying performance with silver screen film in the dark environment, and superior performance in the ambient light condition in the aspects of relative contrast, color gamut and ambient light rejection efficiency.

关键词： Projection Screen Micro-Lens Arrays Combination Ambient Light Rejection Pixelation Removal

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Low-loss forward and backward surface plasmons in a semiconductor nanowire coated by helical graphene strips

arXiv

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arXiv 2018年

作者： Shcherbinin, Vitalii I. Fesenko, Volodymyr I. Tuz, Vladimir R. International Center of Future Science State Key Laboratory on Integrated Optoelectronics College of Electronic Science and Engineering Jilin University 2699 Qianjin Str Changchun130012 China National Science Center Kharkiv Institute of Physics and Technology National Academy of Sciences of Ukraine Akademicheskaya Str Kharkiv61108 Ukraine Institute of Radio Astronomy National Academy of Sciences of Ukraine 4 Mystetstv Str Kharkiv61002 Ukraine

In the long-wavelength approximation, the effective conductivity tensor is introduced for graphene ribbons (strips) placed periodically at the interface between two media. The resulting conducting surface is considered as a coating for semiconductor nanowire. For the hybrid waves of such nanowire the dispersion equations are obtained in explicit form. Two types of surface plasmons are found to exist: (i) the modified surface plasmons, which originate from the ordinary surface plasmons of a graphene-coated semiconductor nanowire, and (ii) the spoof plasmons, which arise on the array of graphene ribbons and may possess forward-wave and backward-wave dispersion. It is revealed that the spoof surface plasmons are low-loss ones, and their frequencies, field-confinement and group velocities can be tuned widely by adjusting the coil angle and width of helical graphene strips. Copyright © 2018, The Authors. All rights reserved.

关键词： Graphene

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Multiple invisibility regions induced by symmetry breaking in a trimer of subwavelength graphene-coated nanowires

arXiv

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arXiv 2018年

作者： Fesenko, Volodymyr I. Shcherbinin, Vitalii I. Tuz, Vladimir R. International Center of Future Science State Key Laboratory on Integrated Optoelectronics College of Electronic Science and Engineering Jilin University 2699 Qianjin Street Changchun130012 China Institute of Radio Astronomy National Academy of Sciences of Ukraine 4 Mystetstv Street Kharkiv61002 Ukraine National Science Center Kharkiv Institute of Physics and Technology National Academy of Sciences of Ukraine 1 Akademicheskaya Str Kharkiv61108 Ukraine

Electromagnetic response is studied for clusters of subwavelength graphene-coated nanowires illuminated by a linearly polarized plane wave in the terahertz frequency range. The solution of the scattering problem is obtained with the Lorenz-Mie theory and the multiple cylinder scattering formalism. The results show that normalized scattering cross-sections of nanowire clusters can be drastically changed by the symmetry breaking introduced into the cluster's design. This effect is due to excitation of dark modes and is observed only for the incident wave of TEz-polarization. Copyright © 2018, The Authors. All rights reserved.

关键词： Graphene

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Best-in-class LDMOS with ultra-shallow trench isolation and p-buried layer from 18V to 40V in 0.18μm BCD technology 29

Best-in-class LDMOS with ultra-shallow trench isolation and ...

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29th International Symposium on Power Semiconductor Devices and IC's, ISPSD 2017

作者： Jin, Feng Liu, Donghua Xing, Junjun Yang, Xinjie Yang, Jiye Qian, Wensheng Yue, Wei Wang, Pengfei Qiao, Ming Zhang, Bo Shanghai Huahong Grace Semiconductor Manufacturing Corporation Shanghai China National Key ASIC Lab Fudan University Shanghai China State Key Laboratory of Electronic Thin Films and Integrated Devices University of Electronic Science and Technology of China Chengdu China

ISBN: (纸本)9781509051724

This paper proposes a novel LDMOS structure with ultra-shallow trench isolation (USTI) and p-buried layer in 0.18um BCD technology platform. This platform offers 18V to 40V LDMOS devices which has best-in-class specific on-resistant (Ron, sp) with respect to similar technologies. USTI structure is implemented in LDMOS drift region to reduce specific on-resistance (Ron, sp) by shortening the current flow path and smooth the surface electric field. Meanwhile P-buried layer is introduced to assist depletion and enhance the charge density of drift region, which reduces Ron, sp further and keep higher breakdown. The Ron, sp of proposed USTI-LDMOS devices is very competitive, 18V LDMOS has BVDSS=27V and R-,s p=7.1 mQ-mm2;20V LDMOS has BVDSS=30V and R-, s p=8.8mQmm2;3 0V LDMOS has BVDSS=42V and R- , s p=14.5mQmm2;40V LDMOS has BVDSS=52V and R-,sp=20.5mQmm2.2. © 2017 IEEJ.

关键词： Electric fields

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