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Global wild rice germplasm resources conservation alliance:World Wild-Rice Wiring

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Molecular Plant 2024年第4期17卷 516-518页

作者： Xiaoming Zheng Disna Ratnasekera jiayu fan Robert J.Henry Beng-Kah Song Kenneth M.Olsen Bal Krishna Joshi Maria Celeste N.Banaticla-Hilario Tonapha Pusadee Adane Getachew Melaku Yeyinou Laura Estelle Loko Koukham Vilayheuang Gavers K.Oppong Samuel Aduse Poku Peterson W.Wambugu Song Ge Aldo Merotto Junior Ohn Mar Aung Ramaiah Venuprasad Ajay Kohli Wenbin Zhou Qian Qian National Key Facility for Crop Gene Resources and Genetic Improvement Institute of Crop SciencesChinese Academy of Agricultural SciencesBeijing 100081China Sanya National Research Institute of Breeding in Hainan Chinese Academy of Agricultural SciencesBeijing 100081China International Rice Research Institute DAPO Box 7777Metro Manila 4031Philippines Department of Agricultural Biology Faculty of AgricultureUniversity of RuhunaMatara 81000Sri Lanka Yazhouwan National Laboratory No.8 Huanjin RoadYazhou DistrictSanya CityHainan Province 572024China Hainan University Haikou 570228China ARC Centre of Excellence for Plant Success in Nature and Agriculture University of QueenslandBrisbaneQLD4072Australia School of Science Monash University Malaysia47500 Bandar SunwaySelangor 47500Malaysia Department of Biology Washington University in St.LouisSt.LouisMO 63130-4899USA National Agriculture Genetic Resources Center(Genebank) KhumaltarPO Box 3055KathmanduNepal Plant Biology Division Insttute of Biological SciencesUniversity of the Pilippines Los BanosLos BanosLaguna 4031Philippines Division of Agronomy Department of Plant and Soil SciencesFaculty of AgricultureChiang Mai UniversityChiang Mai 50200Thailand Bio and Emerging Technology Institute Addis Ababa 1165Ethiopia National University of Sciences TechnologiesEngineering and Mathematics(UNSTIM)Dassa-ZouméBP 14Benin National Genebank Rice and Cash Crops Research CenterNAFRIVientiane 0605Lao PDR Plant Sciences and the Bioeconomy Rothamsted ResearchHarpenden AL52JQUK UK Future Food Beacon of Excellence and School of Biosciences and University of Nottingham Nottingham LE125RDUK Department of Plant and Environmental Biology University of GhanaAccraGhana Kenya Agricultural and Livestock Research Organization Genetic Resources Research InstituteNairobi 00200Kenya Institute of Botany Chinese Academy of SciencesBeijing 100093China Federal University of Rio Grande do Sul UFRGSPorto Alegre 91501-970RSBrazil Department of Agricultur

Wild relatives of crop are key genetic resources serving as diversity reservoirs for crop improvement under changing ***(Oryza sativa)is one of the most important crops in the world,providing staple food for half of the world's *** rice is thus a critical germplasm resource for sustained global food security,ensuring high production yields,improved quality,and stress resistance in the face of climate *** rice is closely related to domesticated rice and has a rich genetic diversity and exceptional adaptability to extreme *** has played a pivotal role in the history of rice hybridization and has become a key resource for rice breeding *** identification of wild-type cytoplasmic male sterility resources paved the way for the achievement of the“three lines”goal in hybrid rice,leading to a significant increase in rice *** addition,the use of resistance alleles found in wild rice is making rice production more resilient to losses caused by environmental ***,wild rice germplasm resources are threatened due to habitat destruction and other anthropogenic *** the same time,the lack of centralized distribution of wild rice has hampered the sharing of basic information on wild rice resources and the utilization and conservation of wild rice in each country,as well as collaboration among scientists.

关键词： germplasm breeding crops

压接型IGBT芯片的参数分散性对其并联时关断均流的影响

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中国电机工程学报 2024年第5期44卷 1913-1923,I0021页

作者：曹子楷崔翔代安琪李学宝范迦羽詹雍凡唐新灵新能源电力系统国家重点实验室(华北电力大学) 北京市昌平区102206 先进输电技术国家重点实验室(北京智慧能源研究院) 北京市昌平区102209

压接型绝缘栅双极晶体管(insulated gate bipolar transistor,IGBT)的多芯片并联关断期间会出现严重的不均流现象,直接影响到器件的关断可靠性。文中重点研究压接型IGBT芯片参数对其并联时关断均流的影响,首先,根据IGBT单芯片的关断机... 详细信息

压接型绝缘栅双极晶体管(insulated gate bipolar transistor,IGBT)的多芯片并联关断期间会出现严重的不均流现象,直接影响到器件的关断可靠性。文中重点研究压接型IGBT芯片参数对其并联时关断均流的影响,首先,根据IGBT单芯片的关断机理和波形,分析芯片参数对IGBT单芯片关断各个阶段内集电极电流变化的影响规律;其次,定义多芯片并联关断波形中出现的第一类及第二类电流竞争峰谷,建立针对第一类电流竞争峰谷的随机分布模型,获得芯片参数以及并联数目对关断均流的影响规律,通过并联双芯片的双脉冲实验,验证所得规律的有效性;最后,结合分析结果提出阈值电压与饱和压降的相互补偿以及保持阈值电压差与跨导差异号等芯片筛选建议。研究成果可以为并联压接型IGBT芯片的参数筛选工作提供指导。

关键词：压接型绝缘栅双极晶体管关断均流芯片参数筛选建议

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我国西北干旱区绿洲城市热岛效应研究进展

环境保护科学 2024年第4期50卷 9-18,31页

作者：范家喻陈学刚孙景鑫新疆师范大学地理科学与旅游学院乌鲁木齐830054 新疆维吾尔自治区干旱区湖泊环境与资源重点实验室乌鲁木齐830054

了解中国西北干旱区绿洲城市热岛效应研究进展有利于绿洲城市的可持续发展,同时为后期学者的研究方向提供参考。从中国知网学术期刊(网络版)数据库和Web of Science核心库检索并筛选了1990—2022年发表的相关论文共67篇,利用Origin 202... 详细信息

了解中国西北干旱区绿洲城市热岛效应研究进展有利于绿洲城市的可持续发展,同时为后期学者的研究方向提供参考。从中国知网学术期刊(网络版)数据库和Web of Science核心库检索并筛选了1990—2022年发表的相关论文共67篇,利用Origin 2021软件对年度发文量、机构、主要研究内容进行统计和分析,采用CiteSpace 5.8对作者和关键词进行共现聚类。结果表明:干旱区城市热岛效应的论文数量整体偏少,近年呈缓慢上升趋势,被引频次总体不高;研究尺度以城市尺度为主,研究区多集中在乌鲁木齐市。早期多使用地面气象站观测法,近年来以遥感监测法为主,模型预测法与移动样带测量法在干旱区内应用较少;研究热点是城市热岛效应的影响因素和变化过程,城市热岛效应的缓解策略尚未引起重视。未来应该在多个尺度与多个绿洲城市开展研究,并更加关注城市热岛的缓解策略。

关键词：热岛效应绿洲城市综述西北干旱区

疫情管控期乌鲁木齐大气污染时空变化及其影响因素

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地球环境学报 2024年第3期15卷 433-446页

作者：谢斯琪陈学刚范家喻李娜新疆师范大学地理科学与旅游学院乌鲁木齐830054 新疆维吾尔自治区干旱区湖泊环境与资源重点实验室乌鲁木齐830054 新疆乌鲁木齐城市生态系统国家定位观测研究站乌鲁木齐830000

新冠肺炎疫情管控期间为探究空气质量变化机制提供了良好的控制环境。基于监测站点数据,运用数理统计和空间分析法探讨污染物时空变化特征及相关性,利用聚类分析、潜在源贡献、浓度权重轨迹分析乌鲁木齐市三次管控期首要污染物(PM_(2.5)... 详细信息

新冠肺炎疫情管控期间为探究空气质量变化机制提供了良好的控制环境。基于监测站点数据,运用数理统计和空间分析法探讨污染物时空变化特征及相关性,利用聚类分析、潜在源贡献、浓度权重轨迹分析乌鲁木齐市三次管控期首要污染物(PM_(2.5))的潜在来源。结果表明:(1)整体来看,三次管控期PM_(2.5)、PM_(10)、CO、NO_(2)、SO_(2)浓度平均分别下降15.02μg·m^(-3)、36.83μg·m^(-3)、0.26 mg·m^(-3)、19.83μg·m^(-3)、1.18μg·m^(-3),O_(3)浓度平均上升9.15μg·m^(-3)。日内变化上,PM_(2.5)、PM_(10)、CO、NO_(2)浓度呈现“W”型,SO_(2)、O_(3)呈现“几”字型,各污染物浓度季节差异明显。高值区集中在新市区、天山区、水磨沟区、沙依巴克区及头屯河区的东南部,低值区集中在城郊。(2)温度对PM_(2.5)、O_(3)影响较为显著,相对湿度对CO、NO_(2)影响较为显著;整体上,夏季气象因子与污染物之间相关性较差。(3)乌鲁木齐管控期主要气团沿天山山脉的走向流动,受到西风的长距离气流和盆地内部的短距离气流双重影响。乌鲁木齐市空气质量变化受多种气象条件及气团相互运动影响,研究结果可为今后城市大气污染控制提供参考。

关键词：大气污染空间插值潜在源分析新冠肺炎乌鲁木齐

Time-domain and Frequency-domain Analyses of PETT Oscillation in Press Pack IGBTs

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CSEE Journal of Power and Energy Systems 2023年第2期9卷 682-695页

作者： jiayu fan Xiang Cui Xinling Tang Cheng Peng Zhibin Zhao Xiangrui Meng Xuebao Li Zhong Chen State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources North China Electrical Power UniversityBeijing 102206China Power Semiconductor Devices Research Institute State Key Laboratory of Advanced Power Transmission TechnologyGlobal Energy Interconnection Research Institute Co.Ltd.Beijing 102209China Department of Electrical Engineering University of ArkansasFayettevilleAR 72701USA

Plasma extraction transit time(PETT)oscillation might appear in IGBT devices,which is harmful to the electromagnetic compatibility(EMC)of a renewable energy *** eliminate this oscillation,its frequency-domain characteristics in wire-bonded IGBT devices have been extensively ***,the time-domain analysis of PETT oscillation,especially in Press Pack IGBT(PPI)devices,has not attracted enough attention *** this paper,PETT oscillations with multi-chips in PPI devices are systematically investigated by *** is first reported there are multiple resonant oscillations at the tail period when multi-chips turn *** overlap in the time domain waveforms,which lead PETT oscillation to be more serious in ***,PETT oscillation is divided into three different feedback states for the first *** the IGBT chip in the PETT oscillation,its physical based model and behavior model are proposed,which further form the equivalent circuit as the two-port ***,it is indicated that only parallel resonances can lead to PETT oscillation,which is consistent with experiment results.

关键词： PETT oscillation press pack IGBTs timedomain analysis two-port network

信息技术赋能课程思政建设的生成逻辑与实现路径

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中国医学教育技术 2024年第2期38卷 145-149页

作者：王承博姬晓雨范佳瑜郑雨潇延安大学教育科学学院教育技术系陕西延安716000

信息技术深度融入课程思政建设,助推课程思政内容与学科教学模式的创新,驱动思政育人观念变革与范式转换,是信息技术赋能课程思政建设的主要体现。以教育信息化发展为驱动,历经信息技术与课程思政建设全方位的融合过程,实现思想政治教... 详细信息

信息技术深度融入课程思政建设,助推课程思政内容与学科教学模式的创新,驱动思政育人观念变革与范式转换,是信息技术赋能课程思政建设的主要体现。以教育信息化发展为驱动,历经信息技术与课程思政建设全方位的融合过程,实现思想政治教育的生态体系重塑,最终达到信息技术、学科课程与思政元素三者浑然一体的新境界,是信息技术赋能课程思政建设遵循的生成逻辑。坚持以技术为船推进信息技术与课程思政深度融合、以思政教育为帆提高课程思政高站位、以教学为桨助力信息技术赋能课程思政的路线,是实现信息技术赋能课程思政建设的主要路径。

关键词：技术赋能课程思政生成逻辑实现路径

斑块内新生血管分级与颈动脉粥样硬化程度相关性的新进展

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中风与神经疾病杂志 2024年第1期41卷 31-34,F0003页

作者：范佳煜董亚男白竹(综述) 陈盈王丽娟(审校) 吉林大学第一医院神经内科和神经科学中心吉林长春130021

颈动脉粥样硬化是导致缺血性事件发生的重要危险因素。颈动脉斑块负荷及颈动脉狭窄均与缺血性事件发生密切相关,此外,颈动脉斑块内成分也与缺血性事件发生息息相关。斑块内新生血管(intraplaque neovascularization,IPN)作为易损斑块的... 详细信息

颈动脉粥样硬化是导致缺血性事件发生的重要危险因素。颈动脉斑块负荷及颈动脉狭窄均与缺血性事件发生密切相关,此外,颈动脉斑块内成分也与缺血性事件发生息息相关。斑块内新生血管(intraplaque neovascularization,IPN)作为易损斑块的特征成分,通过多种机制参与颈动脉粥样斑块形成。本篇综述重点关注IPN分级与颈动脉粥样硬化程度的关系。

关键词：动脉粥样硬化缺血性事件斑块内新生血管颈动脉狭窄

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Modularized viromimetic polymer nanoparticle vaccines(VPNVaxs) to elicit durable and effective humoral immune responses

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National Science Review 2024年第3期11卷 200-214页

作者： Zichao Huang Xinyu Zhuang Liping Liu jiayu Zhao Sheng Ma Xinghui Si Zhenyi Zhu fan Wu Ningyi Jin Mingyao Tian Wantong Song Xuesi Chen Key Laboratory of Polymer Ecomaterials Changchun Institute of Applied ChemistryChinese Academy of Sciences School of Applied Chemistry and Engineering University of Science and Technology of China Changchun Veterinary Research Institute Chinese Academy of Agricultural Sciences Jilin Biomedical Polymers Engineering Laboratory State Key Laboratory of Polymer Physics and Chemistry Changchun Institute of Applied Chemistry Chinese Academy of Sciences

Virus-like particle(VLP) vaccines had shown great potential during the COVID-19 pandemic, and was thought to be the next generation of antiviral vaccine technology due to viromimetic structures. However,the time-consuming and complicated processes in establishing a current recombinant-protein–based VLP vaccine has limited its quick launch to the out-bursting pandemic. To simplify and optimize VLP vaccine design, we herein report a kind of viromimetic polymer nanoparticle vaccine(VPNVax), with subunit receptor-binding domain(RBD) proteins conjugated to the surface of polyethylene glycol-b-polylactic acid(PEG-b-PLA) nanoparticles for vaccination against SARS-CoV-2. The preparation of VPNVax based on synthetic polymer particle and chemical post-conjugation makes it possible to rapidly replace the antigens and construct matched vaccines at the emergence of different viruses. Using this modular preparation system, we identified that VPNVax with surface protein coverage of 20%–25% had the best immunostimulatory activity, which could keep high levels of specific antibody titers over 5 months and induce virus neutralizing activity when combined with an aluminum adjuvant. Moreover, the polymer nano-vectors could be armed with more immune-adjuvant functions by loading immunostimulant agents or chemical chirality design. This VPNVax platform provides a novel kind of rapidly producing and efficient vaccine against different variants of SARS-CoV-2 as well as other viral pandemics.

关键词： vaccine polymer nanomaterials SARS-CoV-2

Online SOC estimation based on modified covariance extended Kalman filter for lithium batteries of electric vehicles

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Journal of Southeast University(English Edition) 2020年第2期36卷 128-137页

作者： fan jiayu Xia Jing Chen Nan Yan Yongjun School of Mechanical Engineering Southeast University Nanjing 211189 China School of Foreign Languages University of Shanghai for Science and Technology Shanghai 200093 China

To offset the defect of the traditional state of charge(SOC)estimation algorithm of lithium battery for electric vehicle and considering the complex working conditions of lithium batteries,an online SOC estimation algorithm is proposed by combining the online parameter identification method and the modified covariance extended Kalman filter(MVEKF)*** on the parameters identified on line with the multiple forgetting factors recursive least squares methods,the newly-established algorithm recalculates the covariance in the iterative process with the modified estimation and updates the process gain which is used for the next state estimation to decrease errors of the *** including constant pulse discharging and the dynamic stress test(DST)demonstrate that compared with the EKF algorithm,the MVEKF algorithm produces fewer estimation errors and can reduce the errors to 5%at most under the complex charging and discharging conditions of *** the charging process under the DST condition,the EKF produces a larger deviation and lacks stability,while the MVEKF algorithm can estimate SOC stably and has a strong ***,the established MVEKF algorithm is suitable for complex and changeable working conditions of batteries for electric vehicles.

关键词： electric vehicle battery management system(BMS) lithium battery parameter identification state of charge(SOC)