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Computer Model of Phase Transformation From Hot-Deformed Austenite in Niobium Microalloyed Steels

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Journal of Iron and Steel Research International 2007年第2期14卷 66-69页

作者： xu yun-bo yu yong-mei liu xiang-hua wang guo-dong State Key Lab of Rolling and Automation Northeastern University Shenyang 110004 Liaoning China

Based on thermodynamics and kinetics, a new mathematical model was developed to calculate the CCT diagrams and the transformation kinetics in low carbon niobium steels, in which the effect of deformation on the degree of supercooling was taken into account. The undercooling caused by deformation is the major reason for the increase of the starting transition temperature during continuous cooling. The critical cooling rate of bainite formation is within 2--5 ℃s for the studied niobium steels and deformation is suitable for the occurrence of pearlite. The ferrite volume fraction increases with the increase of the austenite boundary area, and decreases with the increase of the cooling rate. The calculated CCT diagrams and the volume fraction of each phase are in good agreement with the measurements.

关键词： low carbon niobium steel thermodynamics supercooling degree continuous cooling transformation computer model

Thermodynamic Calculation of Carbide Precipitate in Niobium Microalloyed Steels

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Journal of Iron and Steel Research International 2006年第6期13卷 53-56页

作者： xu yun-bo yu yong-mei liu xiang-hua wang guo-dong State Key Lab of Rolling and Automation Northeastern University Shenyang 110004 Liaoning China

On the basis of regular solution sublattice model, thermodynamic equilibrium of austenite/carbide in Fe-Nb-C ternary system was investigated. The equilibrium volume fraction, chemical driving force of carbide precipitates and molar fraction of niobium and carbon in solution at different temperatures were evaluated respectively. The volume fraction of precipitates increases, molar fraction of niobium dissolved in austenite decreases and molar fraction of carbon increases with decreasing the niobium content. The driving force increases with the decrease of temperature, and then comes to be stable at relatively low temperatures. The predicted ratio of carbon in precipitates is in good agreement with the measured one.

关键词： microalloyed steel thermodynamic calculation phase equilibrium carbide prediction model

Genome Sequences Provide Insights into the Reticulate Origin and Unique Traits of Woody Bamboos

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Molecular Plant 2019年第10期12卷 1353-1365页

作者： Zhen-hua guo Peng-Fei Ma guo-Qian Yang Jin-yong Hu yun-Long liu En-hua Xia Mi-Cai Zhong Lei Zhao Gui-Ling Sun yu-Xing xu You-Jie Zhao Yi-Chi Zhang yu-Xiao Zhang xue-mei Zhang Meng-yuan Zhou Ying guo Cen guo Jing-Xia liu Xia-Ying Ye yun-mei Chen Yang Yang Bin Han Choun-Sea Lin Ying Lu De-Zhu Li Germplasm Bank of Wild Species Kunming Institute of BotanyChinese Academy of SciencesKunmingYunnan 650201China Key Laboratory for Plant Diversity and Biogeography in East Asia Kunming Institute of BotanyChinese Academy of SciencesKunmingYunnan 650201China State Key Laboratory of Tea Plant Biology and Utilization Anhui Agricultural UniversityHefeiAnhui 230036China Kunming College of Life Science University of Chinese Academy of SciencesKunmingYunnan 650201China lnstitute of Plant Stress Biology State Key Laboratory of Cotton BiologyDepartment of BiologyHenan UniversityKaifengHenan 475001China College of Big Data and Intelligent Engineering Southwest Forestry UniversityKunmingYunnan 650224China yunnan Academy of Biodiversity Southwest Forestry UniversityKunmingYunnan 650224China National Center for Gene Research Shanghai Institute of Plant Physiology and EcologyShanghai Institutes for Biological SciencesChinese Academy of SciencesShanghai 200032China Agricultural Biotechnology Research Center Academia SinicaTaipei College of Fisheries and Life Science Shanghai Ocean UniversityShanghai 201306China

Polyploidization is a major driver of speciation and its importance to plant evolution has been well *** comprise one diploid herbaceous and three polyploid woody lineages,and are members of the only major subfamily in grasses that diversified in forests,with the woody members having a tree-like lignified *** this study,we generated four draft genome assemblies of major bamboo lineages with three different ploidy levels(diploid,tetraploid,and hexaploid).We also constructed a high-density genetic linkage map for a hexaploid species of bamboo,and used a linkage-map-based strategy for genome assembly and identification of subgenomes in *** phylogenomic analyses using a large dataset of syntenic genes with expected copies based on ploidy levels revealed that woody bamboos originated subsequent to the divergence of the herbaceous bamboo lineage,and experienced complex reticulate evolution through three independent allopolyploid events involving four extinct diploid ancestors.A shared but distinct subgenome was identified in all polyploid forms,and the progenitor of this subgenome could have been critical in ancient polyploidizations and the origin of woody *** genetic clues to the unique flowering behavior and woody trait in bamboos were also *** together,our study provides significant insights into ancient reticulate evolution at the subgenome level in the absence of extant donor species,and offers a potential model scenario for broad-scale study of angiosperm origination by allopolyploidization.

关键词： Bambusoideae polyploidization comparative genomics subgenome evolution flowering

Chinese guidelines for the diagnosis and treatment of hand, foot and mouth disease (2018 edition)

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World Journal of Pediatrics 2018年第5期14卷 437-447页

作者： Xing-wang Li Xin Ni Su-yun Qian Quan wang Rong-Meng Jiang Wen-bo xu yu-Cai Zhang Guang-Jun yu Qiang Chen yun-Xiao Shang Cheng-Song Zhao Hui yu Ting Zhang Gang liu Hui-Ling Deng Jie Gao Xian-Gui Ran Qiao-Zhi Yang Bian-Li xu xue-yong huang Xing-dong Wu Yi-Xiao Bao Yi-Ping Chen Zhi-Hai Chen Qing-Quan liu guo-Ping Lu Chun-Feng liu Rong-Bing wang guo-Liang Zhang Fang Gu Hong-mei xu Ying Li Tao Yang Infectious Disease Diagnosis and Treatment Center Beijing Ditan Hospital Capital Medical UniversityBeijingChina Otorhinolaryngology Head andN eck Surgery Beijing Children’s HospitalCapital Medical UniversityBeijingChina Prediatric Intensive Care Unit Beijing Children’s Hospital of Capit al Medical UniversityBeijingChina National Institute For Viral Disease Control and Prevention Chinese Center for Disease Control and Pre ventionBeijingChina Children’s Hospital ofShanghai Jiaotong University ShanghaiChina Pneumology department Jiangxi Provincial Children’s HospitalNanchangChina Department of P ediatric Pneumology Shengjing Hospital of China Medical UniversityShenyangChina Department of Inf ectious Diseases Beijing Children’s HospitalCapital Medical UniversityBeijingChina Department of Inf ectious Diseases Children’s Hospital of Fudan UniversityShanghaiChina Digestive Department Children’s Hospital of Shanghai Jiaotong UniversityShanghaiChina Department of Inf ectious Diseases The Children’s Hospital of Xi'anXi’anChina Infection Control Offi ce Children’s Hospital ofShanghai Jiaotong UniversityShanghaiChina Department ofR espiratory Medicine People’s Hospital ofFuy ang CityFuyangChina Department of P ediatrics People’s Hospital of Liaoc heng CityLiaochengChina

Background Hand, foot, and mouth disease (HFMD) is a common infectious disease in childhood caused by an enterovirus (EV), and which is principally seen in children under 5 years of age. To promote diagnostic awareness and effective treat-ments, to further standardize and strengthen the clinical management and to reduce the mortality of HFMD, the guidelines for diagnosis and treatment have been developed. Methods National Health Commission of China assembled an expert committee for a revision of the guidelines. The com-mittee included 33 members who are specialized in diagnosis and treatment of HFMD. Results Early recognition of severe cases is utmost important in diagnosis and treatment of patients with HFMD. The key to diagnosis and treatment of severe cases lies in the timely and accurate recognition of stages 2 and 3 of HFMD, in order to stop progression to stage 4. Clinicians should particularly pay attention to those EV-A71 cases in children aged less than 3 years, and those with disease duration less than 3 days. The following indicators should alert the clinician of possible deterioration and impending critical disease: (1) persistent hyperthermia;(2) involvement of nervous system;(3) worsening respiratory rate and rhythm;(4) circulatory dysfunction;(5) elevated peripheral WBC count;(6) elevated blood glucose and (7) elevated blood lactic acid. For treatment, most mild cases can be treated as outpatients. Patients should be isolated to avoid cross-infection. Intense treatment modalities should be given for those severe cases. Conclusion The guidelines can provide systematic guidance on the diagnosis and management of HFMD.

关键词： Diagnosis Guidelines HFMD Treatment

Diagnosis,treatment,and prevention of monkeypox in children:an experts'consensus statement

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World Journal of Pediatrics 2023年第3期19卷 231-242页

作者： Rong-Meng Jiang yue-Jie Zheng Lei Zhou Lu-Zhao Feng Lin Ma Bao-Ping xu Hong-mei xu Wei liu Zheng-De Xie Ji-Kui Deng Li-Juan Xiong Wan-Jun Luo Zhi-Sheng liu Sai-Nan Shu Jian-She wang Yi Jiang yun-Xiao Shang Miao liu Li-Wei Gao Zhuang Wei Guang-hua liu Gang liu Wei xiang yu-Xia Cui Gen Lu Min Lu Xiao-Xia Lu Run-Ming Jin Yan Bai Le-Ping Ye dong-Chi Zhao A-dong Shen xiang Ma Qing-hua Lu Feng-Xia xue Jian-bo Shao Tian-You wang Zheng-Yan Zhao Xing-wang Li yong-Hong Yang Kun-Ling Shen Diagnosis and Treatment Center of Infectious Diseases Beijing Ditan HospitalCapital Medical UniversityBeijing 100015China Department of Respiratory Shenzhen Children’s HospitalShenzhen 518038China Branch for Emerging Infectious Disease Public Health Emergency CenterChinese Center for Disease Control and PreventionBeijing 102206China School of Population Medicine&Public Health Chinese Academy of Medical Science/Peking Union Medical CollegeBeijing 100730China Department of Dermatology Beijing Children’s HospitalCapital Medical UniversityNational Center for Children’s Health(Beijing)Beijing 100045China Department of Respiratory Beijing Children’s HospitalCapital Medical UniversityNational Clinical Research Center for Respiratory DiseasesNational Center for Children’s Health(Beijing)Beijing 100045China Department of Infectious Diseases Children’s Hospital of Chongqing Medical UniversityChongqing 400014China Tianjin Children’s Hospital Children’s Hospital of Tianjin UniversityTianjin 300134China Beijing Key Laboratory of Pediatric Respiratory Infection Diseases Key Laboratory of Major Diseases in ChildrenMinistry of EducationNational Clinical Research Center for Respiratory DiseasesResearch Unit of Critical Infection in ChildrenChinese Academy of Medical Sciences2019RU016Laboratory of Infection and VirologyBeijing Pediatric Research InstituteBeijing Children’s HospitalCapital Medical UniversityNational Center for Children’s Health(Beijing)Beijing 100045China Department of Infectious Diseases Shenzhen Children’s HospitalShenzhen 518038China Department of Infectious Diseases Union HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhan 430022China Ofce of Infection Management Wuhan Children’s HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhan 430016China Department of Neurology Wuhan Children’s HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhan 430016China Department of Pediatrics Tongji

Monkeypox is a zoonotic *** the first human monkeypox case was detected in 1970,it has been prevalent in some countries in central and western *** May 2022,monkeypox cases have been reported in more than 96 non-endemic countries and regions *** of September 14,2022,there have been more than 58,200 human monkeypox cases,and there is community *** cessation of smallpox vaccination in 1980,which had some cross-protection with monkeypox,resulted in a general lack of immunity to monkeypox,which caused global concern and *** of Sep-tember 14,2022,there are four monkeypox cases in China,including three in Taiwan province and one in Hong Kong *** foreign studies have shown that children are vulnerable to monkeypox and are also at high risk for severe disease or *** order to improve pediatricians'understanding of monkeypox and achieve early detection,early diagno-sis,early treatment,and early disposal,we have organized national authoritative experts in pediatric infection,respiratory,dermatology,critical care medicine,infectious diseases,and public health and others to formulate this expert consensus,on the basis of the latest"Clinical management and infection prevention and control for monkeypox"released by The World Health Organization,the"guidelines for diagnosis and treatment of monkeypox(version 2022)"issued by National Health Commission of the People's Republic of China and other relevant *** the development of this consensus,multidisciplinary experts have repeatedly demonstrated the etiology,epidemiology,transmission,clinical manifestations,laboratory examinations,diagnosis,differential diagnosis,treatment,discharge criteria,prevention,disposal process,and key points of prevention and control of suspected and confirmed cases.

关键词： Children Consensus Diagnosis Monkeypox Prevention Treatment

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含Nb钢应变诱导析出过程的动力学模拟

东北大学学报（自然科学版） 2005年第4期26卷 351-354页

作者：许云波于永海刘相华王国栋东北大学轧制技术及连轧自动化国家重点实验室辽宁沈阳110004

以热力学和动力学为基础,对Fe Nb C N系统在奥氏体中的析出行为进行模拟,预测了奥氏体在等温和冷却过程中的析出动力学,分析了变形工艺和冷却制度对碳氮化物析出体积分数、析出开始和结束时间等动力学参数的影响·结果表明,在900℃左右... 详细信息

以热力学和动力学为基础,对Fe Nb C N系统在奥氏体中的析出行为进行模拟,预测了奥氏体在等温和冷却过程中的析出动力学,分析了变形工艺和冷却制度对碳氮化物析出体积分数、析出开始和结束时间等动力学参数的影响·结果表明,在900℃左右的鼻子区,析出动力学过程明显加速;变形大大促进了碳氮化物的析出,缩短了析出的开始时间;随着冷却速率的增大,连续冷却析出的开始温度和结束温度均有所降低,并且析出变得越来越不充分·用该方法进行的计算机模拟结果和实验结果吻合良好·

关键词：含Nb钢析出动力学碳氮化物应变诱导析出

Data processing and data products from 2017 to 2019 campaign of astronomical site testing at Ali,Daocheng and Muztagh-ata

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Research in Astronomy and Astrophysics 2020年第6期20卷 109-130页

作者： Zi-huang Cao Jin-Xin Hao Lu Feng Hugh RAJones Jian Li Jing xu Li-yong liu Teng-Fei Song Jian-Feng wang hua-Lin Chen Yan-Jie xue huang Shen yong-Heng Zhao Zhao-xiang Qi Jian-Rong Shi yuan Tian Zheng wang Xia wang Jin-Liang Hou Jin-Ming Bai Ji Yang xu Zhou yong-Qiang Yao Jia Yin Ali Esamdin Guang-Xin Pu Peng Wei Chun-Hai Bai guo-Jie Feng Lu Ma xuan Zhang yu liu Chong Pei Zhi-Xia Shen yun-Ying Jiang Jian-Feng Tian Xian-Qun Zeng Zhi-Gang Hou xu Yang Jun-bo Zhang Shi-Long Liao dong-Wei Fan yun-Fei xu Jian-Ping Xiong Tai-Sheng Yan Xi Zhang Chang-hua Li Yi-Han Tao Si-Cheng yu Zhi-Song Cao Hong-Shuai wang National Astronomical Observatories Chinese Academy of SciencesBeijing 100101China University of Chinese Academy of Sciences Beijing 100049China Shanghai Astronomical Observatory Chinese Academy of SciencesShanghai 200030China Centre for Astrophysics University of HertfordshireHatfieldUK School of Journalism Communication University of ChinaBeijing 100024China Nanjing Institute of Astronomical Optics&Technology Chinese Academy of SciencesNanjing 210042China Xinjiang Astronomical Observatory Chinese Academy of SciencesUrumqi 830011China yunnan Observatories Chinese Academy of SciencesKunming 650216China Purple Mountain Observatory Chinese Academy of SciencesNanjing 210033China Beijing Kaiyang Space Technology Co. LtdBeijing 100085China

Based on previous site testing and satellite cloud data,Ali,Daocheng and Muztagh-ata have been selected as candidate sites for the Large Optical/Infrared Telescope(LOT) in *** present the data collection,processing,management and quality analysis for our site testing based on using similar *** analyze meteorological data,seeing,background light,cloud and precipitable water vapor data from 2017 March 10 to 2019 March *** also investigated the relative usefulness of our all-sky camera data in comparison to that from the meteorological TERRA satellite data based on a night-by-night comparison of the correlation and consistency between *** find a 6% discrepancy arising from a wide range of factors.

关键词： LOT Site-selection-data processing

Chinese expert consensus on the non-invasive imaging examination pathways of stable coronary artery disease

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Journal of Geriatric Cardiology 2018年第1期15卷 30-40页

作者： yun-Dai CHEN Wei-Yi FANG Ji-Yan CHEN Zhan-Ming FAN Chuan-yu GAO Jun-bo GE Zuo-xiang HE yong HUO Lang LI Si-Jin LI Xi-Lie LU Bin LV Ju-Ying QIAN Ya-Jun SHI Zhu-Jun SHEN Jing wang Yi-Ning wang Lei xu Li YANG bo yu mei ZHANG Jun-Jie YANG Shu-Yang ZHANG Xiao-Li ZHANG Shi-hua ZHAO Yang ZHENG yu-Chi HAN Guang ZHI Chinese PLA General Hospital Beijing China Shanghai Chest Hospital Shanghai Jiaotong University Shanghai China Guangdong General Hospital Guangzhou China Beijing Anzhen Hospital Capital Medical University Beijing China Henan Provincial People's Hospital Zhengzhou China Zhongshan Hospital Fudan University Shanghai China Fuwai Hospital Chinese Academy of Medical Sciences Beijing China The First Hospital of Peking University Beijing China The First Affiliated Hospital of Guangxi Medical University Nanning China The First Affiliated Hospital of Shanxi Medical University Taiyuan China Peking Union Medical College Hospital Beijing China The 2^nd Affiliated Hospital of Harbin Medical University Harbin China Qilu Hospital of Shandong University Jinan China The First Bethune Hospital of Jilin University Changchun China University of Pennsylvania United States

1 Introduction Early detection and diagnosis of stable coronary artery disease （SCAD） is essential for proactive secondary prevention of myocardial infarction （MI）, control of disease progress, and reduction of mortality. Clinical decision-making in modem medicine is increasingly dependent on cardiovascular imaging techniques. 2012 ACCF/AHA/ACP/AATS/ PCNA/SCAI/STS guideline for the diagnosis and management of patients with stable ischemic heart disease has been issued by American Heart Association （AHA）. European Society of Cardiology （ESC） has issued 2013 ESC guidelines on the management of stable coronary artery disease.

关键词： Expert consensus Clinical pathway Coronary artery disease Non-invasive imaging examination Pre-test probabilities

C-Mn-Nb钢在控轧控冷条件下相变后铁素体晶粒尺寸的预测

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钢铁研究学报 2006年第9期18卷 36-39页

作者：许云波于永梅刘相华王国栋东北大学轧制技术及连轧自动化国家重点实验室辽宁沈阳110004

基于相变动力学和热力学原理,讨论了椭球形铁素体晶核在奥氏体晶界形核及长大的动力学,在模型中引入变形和冷却的作用,提出了预测C-Mn-Nb钢经控轧控冷后铁素体晶粒尺寸的方法。用该方法进行的计算机模拟结果和实验结果吻合良好,表明这... 详细信息

基于相变动力学和热力学原理,讨论了椭球形铁素体晶核在奥氏体晶界形核及长大的动力学,在模型中引入变形和冷却的作用,提出了预测C-Mn-Nb钢经控轧控冷后铁素体晶粒尺寸的方法。用该方法进行的计算机模拟结果和实验结果吻合良好,表明这种方法可用来模拟该相变过程。

关键词：铁素体晶粒尺寸 C-Mn-Nb钢晶粒细化形核速率控轧-控冷