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CAS-ESM2.0 Successfully Reproduces Historical Atmospheric CO_(2) in a Coupled Carbon−Climate Simulation

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Advances in Atmospheric Sciences 2024年第4期41卷 572-580页

作者： jiawen ZHU Juanxiong HE Duoying JI Yangchun LI He ZHANG Minghua ZHANG Xiaodong ZENG Kece FEI Jiangbo JIN International Center for Climate and Environment Sciences Institute of Atmospheric PhysicsChinese Academy of SciencesBeijing 100029China Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters(CIC-FEMD) Nanjing University of Information Science&TechnologyNanjing 210044China College of Global Change and Earth System Science Beijing Normal UniversityBeijing 100875China State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry Institute of Atmospheric Physics Chinese Academy of SciencesBeijing 100029China School of Marine and Atmospheric Sciences Stony Brook UniversityNY 11790USA University of Chinese Academy of Sciences Beijing 100049China

The atmospheric carbon dioxide(CO_(2))concentration has been increasing rapidly since the Industrial Revolution,which has led to unequivocal global warming and crucial environmental change.It is extremely important to investigate the interactions among atmospheric CO_(2),the physical climate system,and the carbon cycle of the underlying surface for a better understanding of the Earth system.Earth system models are widely used to investigate these interactions via coupled carbon-climate simulations.The Chinese Academy of Sciences Earth System Model version 2(CAS-ESM2.0)has successfully fixed a two-way coupling of atmospheric CO_(2)with the climate and carbon cycle on land and in the ocean.Using CAS-ESM2.0,we conducted a coupled carbon-climate simulation by following the CMIP6 proposal of a historical emissions-driven experiment.This paper examines the modeled CO_(2)by comparison with observed CO_(2)at the sites of Mauna Loa and Barrow,and the Greenhouse Gases Observing Satellite(GOSAT)CO_(2)product.The results showed that CAS-ESM2.0 agrees very well with observations in reproducing the increasing trend of annual CO_(2)during the period 1850-2014,and in capturing the seasonal cycle of CO_(2)at the two baseline sites,as well as over northern high latitudes.These agreements illustrate a good ability of CAS-ESM2.0 in simulating carbon-climate interactions,even though uncertainties remain in the processes involved.This paper reports an important stage of the development of CAS-ESM with the coupling of carbon and climate,which will provide significant scientific support for climate research and China’s goal of carbon neutrality.

关键词： CAS-ESM atmospheric CO_(2) coupled carbon-climate simulation emissions-driven CMIP6 experiment

Analysis of the Impact of Road Traffic Safety Facilities on Traffic Safety

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Journal of World Architecture 2024年第2期8卷 72-77页

作者： jiawen Chu China Merchants Chongqing Communications Technology Research&Design Institute Co. LTD.Chongqing 400067China Chongqing Jiaotong University Chongqing 400074China

The development of the national economy is closely tied to infrastructure construction.In recent years,China has seen a significant increase in the number and scale of road construction projects,aimed at facilitating the flow of goods and enabling convenient travel for the masses.However,this surge in road construction also raises concerns about road traffic safety.Road traffic safety facilities play a crucial role in warning and protecting against traffic accidents.To ensure their effective implementation,this paper analyzes the essence of road traffic facilities and their impact on traffic safety.By identifying challenges in the application of traffic safety facilities and adhering to safety facility application principles,suggestions are proposed to enhance traffic safety management.

关键词： Road traffic safety Facilities Impact Principles Safety recommendations

A multicenter uroflowmetry study of healthy women in China

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中华医学杂志(英文版) 2024年第10期137卷 1225-1227页

作者： liu Xiaodong Meng Lingfeng Wang jiawen Ma Tianming Shi Benkang Huang Hai Wang Qingwei Chen Min Liao Limin Shen Hong Wei Zhongqing Xiao Yuansong Pan Tiejun Ren Jian Zhang Peng Tian Xiaojun Zhang Yaoguang Department of Urology The Second Affiliated Hospital of Nanjing Medical University Nanjing Jiangsu China Department of Urology General Hospital of Southern Theatre Command Guangzhou Guangdong China Department of Urology General Hospital of Central Theatre Command Wuhan Hubei China Department of Urology China-Japan Friendship Hospital Beijing China Department of Urology Beijing Chao-Yang Hospital Beijing China Department of Urology Peking University Third Hospital Beijing China Department of Urology Beijing Hospital National Center of Gerontology Institute of Geriatric Medicine Chinese Academy of Medical Sciences &amp Peking Union Medical College Beijing China Graduate School of Peking Union Medical College Beijing China Department of Urology Qilu Hospital Shandong University Jinan Shandong China Department of Urology SUN YAT-SEN Memorial Hospital Guangzhou Guangdong China Department of Urology The First Affiliated Hospital of Zhengzhou University Zhengzhou Henan China Department of Urology Tongji Hospital Tongji Medical College of Huazhong University of Science and Technology Wuhan Hubei China Department of Urology China Rehabilitation Research Center Beijing China Department of Urology West China Hospital Chengdu Sichuan China

A Confined Two-peaked Solar Flare Observed by EAST and SDO

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Research in Astronomy and Astrophysics 2024年第4期24卷 71-83页

作者： Liang Zhang Ruisheng Zheng Zhike Xue Changhui Rao Qing Lin Zhimao Du jiawen Yao Libo Zhong Yao Chen Institute of Space Sciences Shandong UniversityWeihai 264209China Yunnan Key Laboratory of the Solar physics and Space Science Kunming 650011China Institute of Frontier and Interdisciplinary Science.Shandong University Qingdao266237China Institute of Optics and Electronics Chinese Academy of SciencesChengdu 610209China National Laboratory on Adaptive Optics Chengdu610209China University of Chinese Academy of Sciences Beijing 100049China Shanghai Astronomy Museum Shanghai201306China

The solar flare is one of the most violent explosions,and can disturb the near-Earth space weather.Except for commonly single-peaked solar flares in soft X-ray,some special flares show intriguing a two-peak feature that is deserved much more attentions.Here,we reported a confined two-peaked solar flare and analyzed the associated eruptions using high-quality observations from Educational Adaptive-optics Solar Telescope and Solar Dynamics Observatory.Before the flare,a magnetic flux rope(MFR)formed through partially tether-cutting reconnection between two sheared arches.The flare occurred after the MFR eruption that was confined by the overlying strong field.Interestingly,a small underlying filament immediately erupted,which was possibly destabilized by the flare ribbon.The successive eruptions were confirmed by the analysis of the emission measure and the reconnection fluxes.Therefore,we suggest that the two peaks of the confined solar flare are corresponding to two episodes of magnetic reconnection during the successive eruptions of the MFR and the underlying filament.

关键词： Sun:activity Sun:corona Sun:flares Sun:magnetic fields Sun:filaments prominences Online material:animations

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伞形风力机尾流特性及输出特性研究

中国机械工程 2022年第14期33卷 1751-1759页

作者：刘东包道日娜刘旭江刘嘉文吴胜胜王鹏唐迪内蒙古工业大学能源与动力工程学院呼和浩特010051

为适应分布式风力发电机的恶劣应用环境,同时满足功率调控以及风机自我保护的需求,提出了一种新型伞形风力机。为研究伞形风力机风轮收缩角对尾流特性和输出特性的影响,分别进行了数值模拟和风洞试验。研究结果表明:伞形风力机风轮收缩... 详细信息

为适应分布式风力发电机的恶劣应用环境,同时满足功率调控以及风机自我保护的需求,提出了一种新型伞形风力机。为研究伞形风力机风轮收缩角对尾流特性和输出特性的影响,分别进行了数值模拟和风洞试验。研究结果表明:伞形风力机风轮收缩角增大后,扫掠面积减小,尾流直径减小,尾流轴向影响范围增大,速度恢复减缓,同时会导致叶尖涡强度减小,中心涡强度先增大后减小,但是中心涡强度一直大于叶尖涡强度,所以叶根后的速度亏损要一直大于叶尖后的速度亏损。此外,风洞试验也验证了风轮收缩角对功率控制的有效性。

关键词：伞形风力机尾流涡量输出特性

Cu_(1.94)S-SnS纳米异质结的合成及其光催化降解研究

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化学学报 2023年第7期81卷 725-734页

作者：刘嘉文林玮璜王惟嘉郭学益杨英中南大学冶金与环境学院长沙410083 中南大学有色金属资源循环利用湖南省重点实验室长沙410083 中南大学有色金属资源循环利用国家地方联合工程中心长沙410083 海南医学院第二附属医院临床医学研究所海口570311

为提高光催化降解有害染料的活性,采用热注入-阳离子交换法合成了Cu_(1.94)S-SnS单颗粒纳米异质结构材料.探究在不同温度下(80, 120和160℃), Sn^(2+)作为客体离子进行阳离子部分交换所得产物的差异.通过高分辨率透射电子显微镜(HRTRM)... 详细信息

为提高光催化降解有害染料的活性,采用热注入-阳离子交换法合成了Cu_(1.94)S-SnS单颗粒纳米异质结构材料.探究在不同温度下(80, 120和160℃), Sn^(2+)作为客体离子进行阳离子部分交换所得产物的差异.通过高分辨率透射电子显微镜(HRTRM)图像、高角度环形暗场扫描透射电子显微镜(HAADF-STEM)图像、扫描透射电子显微镜能量色散光谱(STEM-EDS)、X射线衍射和X射线光电子能谱仪等分析手段对样品进行表征.紫外-可见-近红外吸收光谱表明,合成的Cu_(1.94)S-SnS纳米异质结构在可见光范围内具有更高的光吸收度.通过光催化降解亚甲基蓝和四环素,对产物的光催化性能进行表征,发现异质结结构有效提高了单一硫化物的光催化活性,亚甲基蓝(MB)的光降解率从56%(母体材料Cu_(1.94)S)提高到98%(Cu_(1.94)S-SnS纳米异质结),四环素(TC)的光降解速率也提高了约5倍,合成的异质结结构具有更高的光催化活性.

关键词：硫化铜硫化锡纳米异质结构亚甲基蓝光催化

Unravelling the genetic basis for skeletal muscle mitochondrial DNA copy number variations in pigs

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Science China(Life Sciences) 2024年第1期67卷 211-214页

作者： jiawen Yang Leilei Cui Yifeng Zhang Ziqi Ling Zhou Zhang Yizhong Huang Junwu Ma Shijun Xiao Bin Yang Lusheng Huang National Key Laboratory for Swine Genetic Improvement and Germplasm Innovation Jiangxi Agricultural UniversityNanchang 330045China School of Life Sciences Nanchang UniversityNanchang 330047China

Dear Editor,Mitochondria are the center of cellular energy generation and free radical metabolism,with important functions in regulating intracellular calcium levels,cell apoptosis,cell cycle and epigenetic modifications.Mitochondrial DNA copy number(mtDNA-CN)is an indicator of mitochondrial biogenesis and has been associated with several diseases,such as cardiovascular disease,depression,chronic kidney disease and aging in humans(Clyde,2022).

关键词： metabolism cardiovascular diseases

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可变偏心距风力机应力应变特性研究

太阳能学报 2022年第5期43卷 296-304页

作者：包道日娜刘旭江王帅龙刘嘉文刘东吴胜胜内蒙古工业大学能源与动力工程学院呼和浩特010051

针对新型可变偏心距风力机,通过数值模拟及实验测试的方法,研究偏心距离对风轮、塔筒及侧偏调节机构受力的影响。结果表明,在来流风速增大的条件下,可变偏心距风力机通过增大偏心距可减小叶片受力,风轮向右侧偏心100 mm时叶片最大应力... 详细信息

针对新型可变偏心距风力机,通过数值模拟及实验测试的方法,研究偏心距离对风轮、塔筒及侧偏调节机构受力的影响。结果表明,在来流风速增大的条件下,可变偏心距风力机通过增大偏心距可减小叶片受力,风轮向右侧偏心100 mm时叶片最大应力是未偏心工况的86%;随着偏心距离的增大,塔筒在俯仰方向受力增长趋势放缓,受风轮偏转角增大的影响,塔筒在侧弯方向受力处于持续增大的状态;在向右偏心距离增大的过程中,风轮侧偏调节机构应力及应变逐渐向右侧集中,最大应力、应变始终处于中间部位,结果验证了偏心距调节方式的可行性及安全性。

关键词：风力机应力气动力数值模拟偏心距载荷

sRNAminer,a swiss army knife in small RNA research

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Science China Life Sciences 2024年

作者： jiawen Zhao Zhonglong Guo Xiaozeng Yang State Key Laboratory of Plant Diversity and Specialty Crops Institute of Botany the Chinese Academy of Sciences Co-Innovation Center for Sustainable Forestry in Southern China College of Life Sciences Nanjing Forestry University

Small RNAs(sRNAs) are crucial noncoding RNA molecules that regulate gene expression across all kingdoms of life,continually revealing new insights through decades of research. Typically,sRNAs in plants are mainly categorized into microRNAs(miRNAs) and short interfering RNAs(siRNAs), with siRNAs predominantly consisting of phased small interfering RNAs(phasiRNAs) and heterochromatic siRNAs(hc-siRNAs)(Axtell and Meyers, 2018). While the definition of “small” refers to the size, the impact of sRNAs on development, reproduction,environmental responses, and interspecies communication is profoundly “huge”(Song et al., 2019; Zhan and Meyers,2023).

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