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Micro-bending of metallic crystalline foils by non-local dislocation density based crystal plasticity finite element model

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Transactions of Nonferrous Metals Society of China 2013年第11期23卷 3362-3371页

作者：章海明董湘怀王倩李河宗上海交通大学模具CAD国家工程研究中心上海200030 河北工程大学机电工程学院邯郸056038

A non-local dislocation density based crystal plasticity model, which takes account of the microstrncture inhomogeneity, was used to investigate the micro-bending of metallic crystalline foils. In this model, both statistically stored dislocations （SSDs） and geometrically necessary dislocations （GNDs） are taken as the internal state variables. The strain gradient hardening in micro-bending of single-grained metal foils was predicted by evolution of GNDs. The predicted results were compared with the micro-hardness distribution of the previous micro-bending experiments of CuZn37 a-brass foils with coarse grains and fine grains. Comparison of the simulated dislocation densities distribution of SSDs and GNDs with the experimental results shows that different micro-hardness distribution patterns of the coarse and fine grain foils can be attributed to the corresponding SSDs and GNDs distributions. The present model provides a physical insight into the deformation mechanism and dislocation densities evolution of the micro-bending process.

关键词： crystal plasticity micro-bending statistically stored dislocations geometrically necessary dislocations

Constitutive model for thin sheet metal with one or several grains across thickness in micro-forming

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Transactions of Nonferrous Metals Society of China 2013年第5期23卷 1428-1434页

作者：王倩董湘怀章海明李河宗申昱上海交通大学模具CAD国家工程研究中心上海200030 河北工程大学机电工程学院邯郸056038

Effects of four factors on thin sheet metal flow stress were considered, including grain size d, thickness t, grain number across thickness （t/d ratio） and surface property. Surface model was adopted to quantitatively describe the effect of t/d ratio on flow stress for pure copper. It is predicted that when t/d ratio is larger than a critical value, effect of t/d ratio on flow stress can be neglected. Existence of critical t/d ratio changes the Hall-Petch relationship and evolution of flow stress with thickness. A criterion was proposed to determine critical t/d ratio. Then a comprehensive constitutive model was developed to consider all the four factors, with parameters determined by fitting experimental data of high purity Ni. The predicted results show the same tendencies with experiment results. Particularly when t/d ratio decreases, Hall-Petch relationship and evolution of true stress show varied slopes with two transition points.

关键词： constitutive model flow stress micro forming size effect

Anα/βhydrolase family member negatively regulates salt tolerance but promotes flowering through three distinct functions in rice

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Molecular Plant 2022年第12期15卷 1908-1930页

作者： You-Huang xiang Jia-Jun Yu Ben liao Jun-xiang Shan wang-Wei Ye Nai-qian dong Tao Guo Yi Kan hai zhang Yi-Bing Yang Ya-Chao li huai-Yu Zhao Hong-Xiao Yu Zi-Qi Lu Hong-Xuan lin National Key Laboratory of Plant Molecular Genetics CAS Centre for Excellence in Molecular Plant Sciences and Collaborative Innovation Center of Genetics&DevelopmentShanghai Institute of Plant Physiology and EcologyChinese Academy of SciencesShanghai 200032China Guangdong Laboratory for lingnan Modern Agriculture Guangzhou 510642China University of the Chinese Academy of Sciences Beijing 100049China School of life Science and Technology ShanghaiTech UniversityShanghai 201210China

Ongoing soil salinization drastically threatens crop growth,development,and yield *** is therefore crucial that we improve salt tolerance in rice by exploiting natural genetic ***,many salt-responsive genes confer undesirable phenotypes and therefore cannot be effectively applied to practical agricultural *** this study,we identified a quantitative trait locus for salt tolerance from the African rice species Oryza glaberrima and named it as Salt Tolerance and heading Date 1(STH1).We found that STH1 regulates fatty acid metabolic homeostasis,probably by catalyzing the hydrolytic degradation of fatty acids,which contributes to salt ***,we demonstrated that STH1 forms a protein complex with D3 and a vital regulatory factor in salt tolerance,OsHAL3,to regulate the protein abundance of OsHAL3 via the 26S proteasome ***,we revealed that STH1 also serves as a co-activator with the floral integrator gene heading date 1 to balance the expression of the florigen gene heading date 3a under different circumstances,thus coordinating the regulation of salt tolerance and heading ***,the allele of STH1 associated with enhanced salt tolerance and high yield is found in some African rice accessions but barely in Asian *** of the STH1HP46 allele from African rice into modern rice cultivars is a desirable approach for boosting grain yield under salt ***,our discoveries not only provide conceptual advances on the mechanisms of salt tolerance and synergetic regulation between salt tolerance and flowering time but also offer potential strategies to overcome the challenges resulted from increasingly serious soil salinization that many crops are facing.

关键词： rice salt tolerance flowering time grain yield fatty acid

Application of deep learning methods combined with physical background in wide field of view imaging atmospheric Cherenkov telescopes

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Nuclear Science and Techniques 2024年第4期35卷 208-220页

作者： Ao-Yan Cheng Hao Cai Shi Chen Tian-Lu Chen xiang dong You-liang Feng Qi Gao Quan-Bu Gou Yi-Qing Guo Hong-Bo Hu ming-ming Kang hai-Jin li Chen liu Mao-Yuan liu Wei liu Fang-Sheng Min Chu-Cheng Pan Bing-qiang Qiao xiang-li qian Hui-Ying Sun Yu-Chang Sun Ao-Bo wang Xu wang Zhen wang Guang-Guang Xin Yu-Hua Yao qiang Yuan Yi zhang School of Physics and Technology Wuhan UniversityWuhan 430072China School of Physics and Astronomy Yunnan UniversityKunming 650091China Ministry of Education The Key Laboratory of Cosmic Rays(Tibet University)Lhasa 850000China Key Laboratory of Particle Astrophysics Institute of High Energy PhysicsChinese Academy of SciencesBeijing 100049China University of Chinese Academy of Sciences 19 A Yuquan RoadShijingshan DistrictBeijing 100049China College of Physics Sichuan UniversityChengdu 610064China School of Intelligent Engineering Shandong Management UniversityJinan 250357China Tsung‑Dao Lee Institute Shanghai Jiao Tong UniversityShanghai 200240China Suzhou Aerospace Information Research Institute Suzhou 215123China College of Physics Chongqing UniversityNo.55 Daxuecheng South RoadHigh‑tech DistrictChongqing 401331China Key Laboratory of Dark Matter and Space Astronomy Purple Mountain ObservatoryChinese Academy of SciencesNanjing 210008China

The High Altitude Detection of Astronomical Radiation(HADAR)experiment,which was constructed in Tibet,China,combines the wide-angle advantages of traditional EAS array detectors with the high-sensitivity advantages of focused Cherenkov *** objective is to observe transient sources such as gamma-ray bursts and the counterparts of gravitational *** study aims to utilize the latest AI technology to enhance the sensitivity of HADAR *** datasets and models with distinctive creativity were constructed by incorporating the relevant physical theories for various *** models can determine the type,energy,and direction of the incident particles after careful *** obtained a background identification accuracy of 98.6%,a relative energy reconstruction error of 10.0%,and an angular resolution of 0.22°in a test dataset at 10 *** findings demonstrate the significant potential for enhancing the precision and dependability of detector data analysis in astrophysical *** using deep learning techniques,the HADAR experiment’s observational sensitivity to the Crab Nebula has surpassed that of MAGIC and *** energies below 0.5 TeV and remains competitive with conventional narrow-field Cherenkov telescopes at higher *** addition,our experiment offers a new approach for dealing with strongly connected,scattered data.

关键词： Vhe gamma-ray astronomy HADAR Deep learning Convolutional neural networks

Frontiers in high entropy alloys and high entropy functional materials

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Rare Metals 2024年第10期43卷 4639-4776页

作者： Wen-Tao zhang Xue-qian wang Feng-Qi zhang Xiao-Ya Cui Bing-Bing Fan Jia-ming Guo Zhi-Min Guo Rui Huang Wen Huang Xu-Bo li Meng-Ru li Yan Ma Zhi-Hua Shen Yong-Gang Sun De-Zhuang wang Fei-Yang wang li-qiang wang Nan wang Tian-li wang Wei wang Xiao-Yang wang Yi-Han wang Fu-Jie Yu Yu-Zhen Yin ling-Kun zhang Yi zhang Jian-Yang zhang Qi Zhao Yu-Ping Zhao Xin-dong Zhu Yasir Sohail Ya-Nan Chen Tao Feng Qi-Long Gao hai-Yan he Yong-Jiang Huang Zeng-Bao Jiao Hua Ji Yao Jiang qiang li Xiao-ming li Wei-Bing liao huai-Jun lin Hui liu Qi liu Qing-Feng liu Wei-Di liu Xiong-Jun liu Yang Lu Yi-Ping Lu Wen Ma Xue-Fei Miao Jie Pan Qing wang Hong-Hui Wu Yuan Wu Tao Yang Wei-ming Yang qian Yu Jin-Yu zhang Zhi-Gang Chen liang Mao Yang Ren Bao-Long Shen Xun-li wang Zhe Jia he Zhu Zhen-Duo Wu Si Lan School of Materials Science and Engineering Nanjing University of Science and TechnologyNanjing 210094China Jiangsu Key Laboratory for Advanced Metallic Materials School of Materials Science and EngineeringSoutheast UniversityNanjing 211189China Department of Physics City University of Hong KongHongKong 999077China School of Materials Science and Engineering Tianjin UniversityTianjin 300072China School of Physics and Microelectronics Zhengzhou UniversityZhengzhou 450001China Department of Mechanical Engineering Research Institute for Advanced ManufacturingThe Hong Kong Polytechnic UniversityHong Kong 100872China Center of Electron Microscopy and State Key Laboratory of Silicon Materials School of Materials Science and EngineeringZhejiang UniversityHangzhou 310027China Key Laboratory of Solidification Control and Digital Preparation Technology(liaoning Province) School of Materials Science and EngineeringDalian University of TechnologyDalian 116024China Institute of Advanced Wear&Corrosion Resistance and Functional Materials Jinan UniversityGuangzhou 510632China School of Mechanics and Civil Engineering China University of Mining and TechnologyXuzhou 221116China School of Physical Sciences Great Bay UniversityDongguan 523000China School of Materials Science and Engineering Harbin Institute of TechnologyHarbin 150001China State Key Laboratory of Materials-Oriented Chemical Engineering College of Chemical EngineeringNanjing Tech UniversityNanjing 211816China Beijing Advanced Innovation Center for Materials Genome Engineering Research Institute for Carbon NeutralityUniversity of Science and Technology BeijingBeijing 100083China Department of Mechanical Engineering The University of Hong KongHong Kong 999077China School of Computing Macquarie UniversitySydney 2113Australia Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province College of Physics and Optoelectronic EngineeringShenzhen UniversityShenzhen 518060China State Key Laborato

Owing to their exceptional properties,high-entropy alloys(heAs)and high-entropy materials have emerged as promising research areas and shown diverse ***,the recent advances in the field are comprehensively reviewed,organized into five *** first section introduces the background of heAs,covering their definition,significance,application prospects,basic properties,design principles,and *** subsequent section focuses on cutting-edge high-entropy structural materials,highlighting developments such as nanostructured alloys,grain boundary engineering,eutectic systems,cryogenic alloys,thin films,micro-nano-lattice structures,additive manufacturing,high entropy metallic glasses,nano-precipitate strengthened alloys,composition modulation,alloy fibers,and refractory *** the following section,the emphasis shifts to functional materials,exploring heAs as catalysts,magneto-caloric materials,corrosion-resistant alloys,radiation-resistant alloys,hydrogen storage systems,and materials for ***,the review encompasses functional high-entropy materials outside the realm of alloys,including thermoelectric,quantum dots,nanooxide catalysts,energy storage materials,negative thermal expansion ceramics,and high-entropy wave absorption *** paper concludes with an outlook,discussing future directions and potential growth areas in the *** this comprehensive review,researchers,engineers,and scientists may gain valuable insights into the recent progress and opportunities for further exploration in the exciting domains of high-entropy alloys and functional materials.

关键词： High entropy alloys Cutting-edge structural materials Cutting-edgefunctional materials

Timing analysis of the black hole candidate EXO 1846–031 with Insight-HXMT monitoring

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Research in Astronomy and Astrophysics 2021年第3期21卷 193-204页

作者： he-Xin liu Yue Huang Guang-Cheng Xiao Qing-Cui Bu Jin-Lu Qu Shu zhang Shuang-Nan zhang Shu-Mei Jia Fang-Jun Lu xiang Ma lian Tao Wei zhang li Chen li-ming Song Ti-Pei li Yu-Peng Xu Xue-Lei Cao Yong Chen Cong-Zhan liu Ce Cai Zhi Chang Gang Chen Tian-xiang Chen Yi-Bao Chen Yu-Peng Chen Wei Cui Wei-Wei Cui Jing-Kang Deng Yong-Wei dong Yuan-Yuan Du Min-Xue Fu Guan-Hua Gao he Gao Min Gao ming-Yu Ge Yu-dong Gu Ju Guan Cheng-Cheng Guo Da-Wei Han Jia Huo Lu-Hua Jiang Wei-Chun Jiang Jing Jin Yong-Jie Jin ling-Da Kong Bing li Cheng-Kui li Gang li Mao-Shun li Wei li Xian li Xiao-Bo li Xu-Fang li Yang-Guo li Zheng-Wei li Xiao-Hua liang Jing-Yuan liao Bai-Sheng liu Guo-Qing liu Hong-Wei liu Xiao-Jing liu Yi-Nong liu Bo Lu Xue-Feng Lu Qi Luo Tao Luo Bin Meng Yi Nang Jian-Yin Nie Ge Ou Na Sai Ren-Cheng Shang Xin-Ying Song liang Sun Ying Tan You-li Tuo Chen wang Guo-Feng wang Juan wang ling-Jun wang Weng-Shuai wang Yu-Sa wang xiang-Yang Wen Bai-Yang Wu Bo-Bing Wu Mei Wu Shuo Xiao Shao-lin Xiong he Xu Jia-Wei Yang Sheng Yang Yan-Ji Yang Yi-Jung Yang Qi-Bin Yi qian-Qing Yin Yuan You Ai-Mei zhang Cheng-Mo zhang Fan zhang Hong-Mei zhang Juan zhang Tong zhang Wan-Chang zhang Wen-Zhao zhang Yi zhang Yi-Fei zhang Yong-Jie zhang Yuan-Hang zhang Yue zhang Zhao zhang Zhi zhang Zi-liang zhang hai-Sheng Zhao Xiao-Fan Zhao Shi-Jie Zheng Yao-Guang Zheng Deng-Ke Zhou Jian-Feng Zhou Yu-Xuan Zhu Ren-lin Zhuang Yue Zhu Key Laboratory of Particle Astrophysics Institute of High Energy PhysicsChinese Academy of SciencesBeijing 100049China University of Chinese Academy of Sciences Chinese Academy of SciencesBeijing 100049China Institut fur Astronomie und Astrophysik Kepler Center for Astro and Particle PhysicsEberhard Karls Universität72076 TubingenGermany Department of Astronomy Beijing Normal UniversityBeijing 100088China Department of Astronomy Tsinghua UniversityBeijing 100084China Department of Physics Tsinghua UniversityBeijing 100084China Department of Engineering Physics Tsinghua UniversityBeijing 100084China Key Laboratory of Space Astronomy and Technology National Astronomical ObservatoriesChinese Academy of SciencesBeijing 100101China College of Physics Sciences&Technology Hebei UniversityBaoding 071002Hebei ProvinceChina

We present the observational results from a detailed timing analysis of the black hole candidate EXO 1846-031 during its outburst in 2019 with the observations of Insight-HXMT,NICER and *** outburst can be classified roughly into four different ***-C quasi-periodic oscillations(QPOs)observed by NICER(about 0.1-6 Hz)and Insight-HXMT(about 0.7-8 Hz)are also reported in this ***,we study various physical quantities related to QPO *** QPO rms-frequency relationship in the energy band 1-10 keV indicates that there is a turning pointing in frequency around2 Hz,which is similar to that of GRS 1915+105.A possible hypothesis for the relationship above may be related to the inclination of the source,which may require a high inclination to explain *** relationships between QPO frequency and QPO rms,hardness,total fractional rms and count rate have also been found in other transient sources,which can indicate that the origin of type-C QPOs is non-thermal.

关键词： X-ray binaries black hole candidate QPO EXO 1846–031

Efficacy and safety of sirolimus early conversion protocol in liver transplant patients with hepatocellular carcinoma:A single-arm, multicenter, prospective study

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hepatobiliary & Pancreatic Diseases International 2022年第2期21卷 106-112页

作者： Ren-Yi Su Sun-Bin ling Qiao-Nan Shan Xu-Yong Wei Rui wang Chang-Ku Jia li Zhuang Tian Shen li-Min Ding Zhi-Dan Xu Lai-Bang Luo li-Bo Sun Guang-ming li Tai-Shi Fang Nan Jiang Kun zhang Zhao-Jie Su Zhi-hai Peng Ren Lang Tao Jiang qiang he lin-Sen Ye Yang Yang Yu-Ting he Wen-Zhi Guo liu-Gen Lan Xu-Yong Sun dong Chen Zhi-Shui Chen Da-Wei Zhou Shao-Jun Ye Qi-Fa Ye Min Tian Jian-Hua Shi Bo wang Jiang liu qian Lu Wei Rao Jin-Zhen Cai Tao Lv Jia-Yin Yang Pu-Sen wang lin Zhong Jing-Sheng Ma Qi-Gen li Sheng-dong Wu Chang-Jiang Lu Cai-De Lu dong-Hua zhang Xuan wang Zi-qiang li Mu-Jian Teng Jun-Jie li Wen-Tao Jiang Jian-Hua li Quan-Bao zhang Ning-Qi Zhu Zheng-Xin wang Kang he qiang Xia Shao-Hua Song Zhi-Ren Fu Wei Qiu Guo-Yue Lv Rui-Peng Song Ji-Zhou wang Zheng wang Jian Zhou Gang Chen Ying-Peng Zhao li li Ze-Min Hu Qi-Jie Luo Zhong-Zhou Si Bin Xie Xiao-Shun he Zhi-Yong Guo Shu-Sen Zheng Xiao Xu Department of hepatobiliary and Pancreatic Surgery The Center for Integrated Oncology and Precision MedicineAffiliated Hangzhou First People’s HospitalZhejiang University School of MedicineHangzhou 310006China NHC Key Laboratory of Combined Multi-organ Transplantation Hangzhou 310003China Department of hepatobiliary and Pancreatic Surgery Shulan(Hangzhou)HospitalZhejiang Shuren University School of MedicineHangzhou 310022China Department of hepatobiliary and Pancreatic Surgery The First Affiliated HospitalZhejiang University School of MedicineHangzhou 310003China Department of Transplantation Jiangxi Provincial People’s Hospital Affiliated to Nanchang UniversityNanchang 330006China liver Transplantation Center Beijing You’an HospitalCapital Medical UniversityBeijing 100069China Department of hepatic Surgery National Clinical Research Center for Infectious DiseaseShenzhen Third People’s HospitalThe Second Affiliated Hospital of Southern University of Science and TechnologyShenzhen 518112China Department of General Surgery Xiang’an Hospital of Xiamen UniversityXiamen 361000China Deartment of hepatobiliary and Pancreaticosplenic Surgery Beijing Chaoyang HospitalCapital Medical UniversityBeijing 100020China Department of hepatic Surgery and liver Transplantation Center The Third Affiliated Hospital of Sun Yat-sen UniversityGuangzhou 510630China Department of hepatobiliary and Pancreatic Surgery The First Affiliated Hospital of Zhengzhou UniversityZhengzhou 450052China Department of liver Transplantation The Second Affiliated Hospital of Guangxi Medical UniversityNanning 530000China Institute of Organ Transplantation Tongji HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhan 430030China Institute of hepatobiliary Diseases of Wuhan University Transplant Center of Wuhan UniversityHubei Key Laboratory of Medical Technology on TransplantationZhongnan Hospital of Wuhan UniversityWuhan 430071China Department of hepatobiliary Surgery The First Affiliated Hos

Mammalian target of rapamycin(m TOR) inhibitor as an attractive drug target with promising antitumor effects has been widely investigated. High quality clinical trial has been conducted in liver transplant(LT) recipients in Western countries. However, the pertinent studies in Eastern world are paucity. Therefore, we designed a clinical trial to test whether sirolimus can improve recurrence-free survival(RFS) in hepatocellular carcinoma(HCC) patients beyond the Milan criteria after LT. This is an open-labeled, single-arm, prospective, multicenter, and real-world study aiming to evaluate the clinical outcomes of early switch to sirolimus-based regimens in HCC patients after LT. Patients with a histologically proven HCC and beyond the Milan criteria will be enrolled. The initial immunosuppressant regimens are center-specifc for the frst 4-6 weeks. The following regimens integrated sirolimus into the regimens as a combination therapy with reduced calcineurin inhibitors based on the condition of patients and centers. The study is planned for 4 years in total with a 2-year enrollment period and a 2-year follow-up. We predict that sirolimus conversion regimen will provide survival benefts for patients particular in the key indicator RFS as well as better quality of life. If the trial is conducted successfully, we will have a continued monitoring over a longer follow-up time to estimate indicator of overall survival. We hope that the outcome will provide better evidence for clinical decision-making and revising treatment guidelines based on Chinese population data.

关键词： Sirolimus Immunosuppressive agents hepatocellular carcinoma liver transplantation Conversion

A practical community-based response strategy to interrupt Ebola transmission in sierra Leone, 2014–2015

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Infectious Diseases of Poverty 2016年第1期5卷 670-679页

作者： Zhong-Jie li Wen-Xiao Tu Xiao-Chun wang Guo-Qing Shi Zun-dong Yin hai-Jun Su Tao Shen Da-Peng zhang Jian-dong li Shan Lv Chun-li Cao Rui-qian Xie Hong-Zhou Lu Rong-Meng Jiang Zheng Cao Zhi-Jie An Lei-Lei li Jie Xu Yan-Wen Xiong Wei Zang Wei zhang Hong-Wei zhang Wen-Sen Chen Hua ling Wen Xu Jian Cai Huan-Jin Luo Xue-Sheng Xing Can-Jun Zheng qiang Wei Xin-Xu li Mei li hai Jiang li-Quan Deng ming-Quan Chen xiang Huo Feng Xu Xue-Hui Lai Xi-Chen Bai Long-Jie Ye Jian-Yi Yao Wen-Wu Yin Jiao-Jin Sun lin Xiao Fu-qiang liu Xiao-qiang liu Hong-Wei Fan Zeng-qiang Kou Ji-Kun Zhou Hao zhang Da-Xin Ni Thomas TSamba Qun li Hong-Jie Yu Yu wang Xiao-Feng liang Division of Infectious Disease Key Laboratory of Surveillance and Early-warning on Infectious DiseaseChinese Center for Disease Control and PreventionBeijingChina Public health Emergency Center Chinese Center for Disease Control and PreventionBeijingChina National Center for AIDS/STD Control and Prevention Chinese Center for Disease Control and PreventionBeijingChina Chinese Field Epidemiology Training Program Chinese Center for Disease Control and PreventionBeijingChina National Immunization Program Chinese Center for Disease Control and PreventionBeijingChina Bureau of Disease Prevention and Control National Health and Family Planning Commission of the People’s Republic of ChinaBeijingChina National Institute for Viral Disease Control and Prevention Chinese Center for Disease Control and PreventionBeijingChina National Institute of Parasitic Disease Chinese Center for Disease Control and PreventionShanghaiChina Chinese Center for health Education BeijingChina Department of Infectious Diseases Shanghai Public Health Clinical CenterShanghaiChina Beijing Ditan Hospital Capital Medical UniversityBeijingChina health News BeijingChina National Institute for Communicable Disease Control and Prevention Chinese Center for Disease Control and PreventionBeijingChina Department of Training Chinese Center for Health EducationBeijingChina Center for Infectious Diseases Beijing Youan HospitalCapital Medical UniversityBeijingChina Infection Management The First Affiliated Hospital of Nanjing Medical UniversityNanjingChina Chongqing Municipal Center for Disease Control and Prevention ChongqingChina Yunnan Provincial Center for Disease Control and Prevention KunmingChina Division of Infectious Disease Control and Prevention Zhejiang Provincial Center for Disease Control and PreventionHangzhouChina Guangdong Provincial Center for Disease Control and Prevention GuangzhouChina Division of Acute Infectious Disease Control and Prevention Hubei Provincial Center for Disease Control and PreventionW

Background:The Ebola virus disease spread rapidly in West Africa in 2014,leading to the loss of thousands of *** engagement was one of the key strategies to interrupt Ebola transmission,and practical community level measures needed to be explored in the field and tailored to the specific context of ***:First,community-level education on Ebola virus disease(EVD)prevention was launched for the community’s social mobilizers in six districts in Sierra Leone beginning in November ***,from January to May of 2015,in three pilot communities,local trained community members were organized to engage in implementation of EVD prevention and transmission interruption measures,by involving them in alert case report,contact tracing,and social *** epidemiological indicators of transmission interruption in three study communities were ***:A total of 6016 community social mobilizers from 185 wards were trained by holding 279 workshops in the six districts,and EVD message reached an estimated 631680 *** three pilot communities,72 EVD alert cases were reported,with 70.8%of them detected by trained local community members,and 14 EVD cases were finally *** tracing detected 64.3%of EVD *** median duration of community infectivity for the cases was 1 *** secondary attack rate was 4.2%,and no third generation of infection was *** health worker was infected,and no unsafe burial and noncompliance to EVD control measures were *** community-based measures were modeled to reduce 77 EVD cases,and the EVD-free goal was achieved four months earlier in study communities than whole country of Sierra ***: The community-based strategy of social mobilization and community engagement was effective in casedetection and reducing the extent of Ebola transmission in a country with weak health system. The successfullypractical experience to reduce the risk of Ebola transmission in the

关键词： Ebola virus disease Community engagement health education Outbreak control

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晶体塑性理论及模拟研究进展

塑性工程学报 2020年第5期27卷 12-32页

作者：章海明徐帅李倩刘珈汝尚晓晴董湘怀崔振山上海交通大学模具CAD国家工程研究中心上海200030 上海交通大学塑性成形技术与装备研究院上海200030 上海交通大学轻合金精密成型国家工程研究中心上海200240

回顾了大变形晶体塑性理论的发展历程、本构模型和均匀化方法,综述了晶体塑性理论成果和典型应用场合。从流动模型、加工硬化模型和状态变量演化的角度对比分析了唯象的和基于物理机理的晶体塑性模型的理论基础和优缺点;阐述了平均场晶... 详细信息

回顾了大变形晶体塑性理论的发展历程、本构模型和均匀化方法,综述了晶体塑性理论成果和典型应用场合。从流动模型、加工硬化模型和状态变量演化的角度对比分析了唯象的和基于物理机理的晶体塑性模型的理论基础和优缺点;阐述了平均场晶体塑性模型和全场晶体塑性模型的特点和适用场合;从金属多晶体材料的各向异性、织构演化、非均匀塑性变形、可成形性、尺度效应、损伤断裂行为、热变形和微观组织演化、虚拟测试等角度介绍了晶体塑性模拟的典型应用场合,并展望了该领域的未来发展趋势。

关键词：晶体塑性塑性成形多尺度模拟本构模型均匀化方法