检索结果-南通市图书馆

Synergistic Impacts of Indian Ocean SST and Indo-China Peninsula Soil Moisture on the 2020 Record-breaking Mei-yu

Advances in Atmospheric Sciences 2024年第9期41卷 1735-1750页

作者： Yinshuo dong Haishan CHEN xuan dong Wenjian HUA Wenjun ZHANG Key Laboratory of Meteorological Disaster Ministry of Education/Joint International Research Laboratory of Climate and Environment Change/Collaborative Innovation Center on Forecast and Evaluation of Meteorological DisastersNanjing University of Information Science and TechnologyNanjing 210044China School of Atmospheric Sciences Nanjing University of Information Science and TechnologyNanjing 210044China Bureau of Hydrology ChangJiang Water Resources CommissionWuhan 430010China

The Yangtze River basin(YRB)experienced a record-breaking mei-yu season in June‒July *** unique long-lasting extreme event and its origin have attracted considerable *** studies have suggested that the Indian Ocean(IO)SST forcing and soil moisture anomaly over the Indochina Peninsula(ICP)were responsible for this unexpected ***,the relative contributions of IO SST and ICP soil moisture to the 2020 mei-yu rainfall event,especially their linkage with atmospheric circulation changes,remain *** using observations and numerical simulations,this study examines the synergistic impacts of IO SST and ICP soil moisture on the extreme mei-yu in *** show that the prolonged dry soil moisture led to a warmer surface over the ICP in May under strong IO SST *** intensification of the warm condition further magnified the land thermal effects,which in turn facilitated the westward extension of the western North Pacific subtropical high(WNPSH)in June‒*** intensified WNPSH amplified the water vapor convergence and ascending motion over the YRB,thereby contributing to the 2020 *** contrast,the land thermal anomalies diminish during normal IO SST backgrounds due to the limited persistence of soil *** roles of IO SST and ICP soil moisture are verified and quantified using the Community Earth System *** synergistic impacts yield a notable 32%increase in YRB *** findings provide evidence for the combined influences of IO SST forcing and ICP soil moisture variability on the occurrence of the 2020 super mei-yu.

关键词： super mei-yu Indian Ocean SST soil moisture Indochina Peninsula

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Forecast of cosmological constraints with superluminous supernovae from the Chinese Space Station Telescope

引用

Science China(Physics,Mechanics & Astronomy) 2024年第10期67卷 128-138页

作者： xuan-dong Jia Jian-Ping Hu Fa-Yin Wang Zi-Gao Dai School of Astronomy and Space Science Nanjing UniversityNanjing 210093China Key Laboratory of Modern Astronomy and Astrophysics(Nanjing University) Ministry of EducationNanjing 210093China Department of Astronomy University of Science and Technology of ChinaHefei 230026China

Superluminous supernovae(SLSNe)are a class of intense celestial events that can be standardized for measuring cosmological parameters,bridging the gap between type Ia supernovae and the cosmic microwave *** this work,we discuss the cosmological applications of SLSNe from the Chinese Space Station Telescope(CSST).Our estimation suggests that SLSNe rate is biased tracing the cosmic star formation rate,exhibiting a factor of(1+z)^(1.2).We futher predict that CSST is poised to observe~360 SLSNe in the 10 square degrees ultra-deep field survey within a span of 2.5 years.A stringent constraint on cosmological parameters can be derived from their peak-color *** is anticipated to uncover a substantial number of SLSNe,contributing to a deeper understanding of their central engines and shedding light on the nature of dark energy at high redshifts.

关键词： supernovae cosmology cosmological constant

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Elafibranor:A promising treatment for alcoholic liver disease,metabolic-associated fatty liver disease,and cholestatic liver disease

引用

World Journal of Gastroenterology 2024年第40期30卷 4393-4398页

作者： Hang Zhang xuan dong Lei Zhu Fu-Shan Tang Department of Clinical Pharmacy Key Laboratory of Basic Pharmacology of Guizhou Province and School of PharmacyZunyi Medical UniversityZunyi 563006Guizhou ProvinceChina Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnomedicine of Ministry of Education Zunyi Medical UniversityZunyi 563006Guizhou ProvinceChina Key Laboratory of Clinical Pharmacy in Zunyi City Zunyi Medical UniversityZunyi 563006Guizhou ProvinceChina

Liver diseases pose a significant threat to human *** effective therapeutic agents exist for some liver diseases,there remains a critical need for advancements in research to address the gaps in treatment options and improve patient *** article reviews the assessment of Elafibranor's effects on liver fibrosis and intestinal barrier function in a mouse model of alcoholic liver disease(ALD),as reported by Koizumi et al in the World Journal of *** summarize the impact and mechanisms of Elafibranor on ALD,metabolic-associated fatty liver disease,and cholestatic liver disease based on current *** also explore its potential as a dual agonist of PPARα/δ,which is undergoing Phase III clinical trials for metabolic-associated *** goal is to stimulate further investigation into Elafibranor's use for preventing and treating these liver diseases and to provide insights for its clinical application.

关键词： Elafibranor Peroxisome proliferator activated receptor Liver fibrosis Alcoholic liver disease Metabolic-associated fatty liver disease Metabolic-associated steatohepatitis Cholestatic liver disease Primary biliary cholangitis Liver diseases

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Copper-catalyzed enantioselective desymmetrizing C(sp^(2))-H functionalization of azide-ynamides via α-imino copper carbenes

引用

Science China Chemistry 2024年第9期67卷 2982-2988页

作者： En-He Huang Li-Gao Liu You-Wei Yin Hao-xuan dong Ji-Jia Zhou Xin Lu Bo Zhou Long-Wu Ye Key Laboratory for Chemical Biology of Fujian Province and State Key Laboratory of Physical Chemistry of Solid Surfaces College of Chemistry and Chemical EngineeringXiamen UniversityXiamen 361005China State Key Laboratory of Organometallic Chemistry Shanghai Institute of Organic ChemistryChinese Academy of SciencesShanghai 200032China

α-Imino metal carbenes are versatile intermediates in organic synthesis,and have broad applications in the assembly of divergent ***,the catalytic enantioselective desymmetrization based onα-imino metal carbenes has not been developed to ***,we disclose an enantioselective desymmetrizing C(sp^(2))-H functionalization of azide-ynamides viaα-imino copper carbenes,leading to the efficient assembly of divergent chiral indoloazepines in generally moderate to excellent yields with high ***,this reaction represents the first enantioselective desymmetrization based onα-imino metal *** synthetic transformations and biological tests show the potential utility of this ***,computational studies are employed to elucidate the reaction mechanism and the origin of enantioselectivity.

关键词： enantioselective desymmetrization metal carbenes copper catalysis nitrene transfer alkynes

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Diversity and connectedness of brine shrimp viruses in global hypersaline ecosystems

引用

Science China(Life Sciences) 2024年第1期67卷 188-203页

作者： xuan dong Cixiu Li Yiting Wang Tao Hu Fan Zhang Fanzeng Meng Meirong Gao Xuekai Han Guohao Wang Jiahao Qin Hans Nauwynck Edward CHolmes Patrick Sorgeloos Liying Sui Jie Huang Weifeng Shi State Key Laboratory of Mariculture Biobreeding and Sustainable Goods Yellow Sea Fisheries Research InstituteChinese Academy of Fishery SciencesLaboratory for Marine Fisheries Science and Food Production ProcessesLaoshan LaboratoryKey Laboratory of Maricultural Organism Disease ControlMinistry of Agriculture and Rural AffairsQingdao Key Laboratory of Mariculture Epidemiology and BiosecurityQingdao 266071China Shandong Provincial Hospital Affiliated to Shandong First Medical University Jinan 250021China Key Laboratory of Emerging Infectious Diseases in Universities of Shandong Shandong First Medical University&Shandong Academy of Medical SciencesTaian 271000China Dalian Ocean University Dalian 116023China Asian Regional Artemia Reference Center Tianjin University of Science&TechnologyTianjin 300457China Ghent University Ghent 9000Belgium Sydney Institute for Infectious Diseases School of Medical SciencesThe University of SydneySydney 2006Australia Network of Aquaculture Centres in Asia-Pacific Bangkok 10900Thailand School of Public Health Shandong First Medical University&Shandong Academy of Medical SciencesJinan 250117China

Brine shrimp(Artemia)has existed on Earth for 400 million years and has major ecological importance in hypersaline *** a crucial live food in aquaculture,brine shrimp cysts have become one of the most important aquatic products traded ***,our understanding of the biodiversity,prevalence and global connectedness of viruses in brine shrimp is still very limited.A total of 143 batches of brine shrimp(belonging to seven species)cysts were collected from six continents including 21 countries and more than 100 geographic locations worldwide during 1977–*** total,55 novel RNA viruses were identified,which could be assigned to 18 different viral families and related *** viruses were dsRNA viruses,16 were+ssRNA viruses,and 28 were−ssRNA *** analyses of the RNA-directed RNA polymerase(RdRp)showed that brine shrimp viruses were often grouped with viruses isolated from other invertebrates and ***,most brine shrimp viruses were related to those from different hosts that might feed on brine shrimp or share the same ecological niche.A notable case was the novel brine shrimp noda-like virus 3,which shared 79.25%(RdRp)and 63.88%(capsid proteins)amino acid identity with covert mortality nodavirus(CMNV)that may cause losses in *** addition,both virome composition and phylogenetic analyses revealed global connectedness in certain brine shrimp viruses,particularly among Asia and Northern *** highlights the incredible species diversity of viruses in these ancient species and provides essential data for the prevalence of RNA viruses in the global aquaculture *** broadly,these findings provide novel insights into the previously unrecognized RNA virosphere in hypersaline ecosystems worldwide and demonstrate that human activity might have driven the global connectedness of brine shrimp viruses.

关键词： brine shrimp Artemia virus diversity novel virus discovery global connectedness hypersaline ecosystem

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Cross-section distortion and springback characteristics of double-cavity aluminum profile in force controlled stretch-bending

引用

Transactions of Nonferrous Metals Society of China 2024年第8期34卷 2476-2490页

作者： Zhi-wen LIU Zi-xuan dong Cong-chang XU Jie YI Luo-xing LI School of Mechanical Engineering University of South ChinaHengyang 421001China State Key Laboratory of Advanced Design and Manufacturing Technology for Vehicle Hunan UniversityChangsha 410082China

3D elastic-plastic FE model for simulating the force controlled stretch-bending process of double-cavity aluminum profile was established using hybrid explicit−implicit solvent *** the computational accuracy and efficiency,the optimal choices of numerical parameters and algorithms in FE modelling were *** formation mechanisms of cross-section distortion and springback were *** effects of pre-stretching,post-stretching,friction,and the addition of internal fillers on forming quality were *** results show that the stress state of profile in stretch-bending is uniaxial with only a circumferential *** stress distribution along the length direction of profile is non-uniform and the maximum tensile stress is located at a certain distance away from the center of *** aluminum profile is gradually attached to bending die,the distribution characteristic of cross-section distortion along the length direction of profile changes from V-shape to *** unloading the forming tools,cross-section distortion decreases obviously due to the stress relaxation,with a maximum distortion difference of 13%before and after *** pre-stretching and post-stretching forces increase,cross-section distortion increases gradually,while springback first decreases and then remains *** increasing friction between bending die and profile,cross-section distortion slightly decreases,while springback ***-section distortion decreases by 83%with adding PVC fillers into the cavities of profile,while springback increases by 192.2%.

关键词： hollow aluminum profile force controlled stretch-bending numerical parameters springback analysis approach cross-section distortion springback process parameters

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

基于改进YOLOv4-tiny算法的车距预警方法

引用

吉林大学学报（工学版） 2024年第3期54卷 741-748页

作者：王宏志宋明轩程超解东旋长春工业大学计算机科学与工程学院长春130012

针对现有网络难以实时精确识别道路检测目标及车距的问题,提出了一种基于改进YOLOv4-tiny算法的车距预警方法。首先,总结了YOLOv4-tiny算法的特征提取结构,分析了原网络结构的不足之处。其次,在原网络中增加了空间金字塔池化层SPPF进一... 详细信息

针对现有网络难以实时精确识别道路检测目标及车距的问题,提出了一种基于改进YOLOv4-tiny算法的车距预警方法。首先,总结了YOLOv4-tiny算法的特征提取结构,分析了原网络结构的不足之处。其次,在原网络中增加了空间金字塔池化层SPPF进一步提取目标特征,增强深层次语义信息表达能力,并将特征金字塔网络(FPN)结构添加下采样通道和CSPnet层,充分融合多尺度图像特征,避免浅层信息丢失。最后,使用Mosaic数据增强方法丰富数据集训练样本,并将改进YOLOv4-tiny算法与单目测距原理相结合,依据车距大小设置3种级别的信息提示进行车距预警实验。结果表明:本文算法在PASCAL VOC数据集上的检测速度为43帧/s,平均精度达到81.25%,较YOLOv4-tiny算法提高了3.59%。可见,改进YOLOv4-tiny算法在满足检测实时性要求的同时,具备良好的目标检测精度,对提升车距预警方法的使用效果具有指导意义。

关键词：交通运输安全工程目标检测 YOLOv4-tiny算法单目测距车距预警

来源：

维普期刊数据库博看期刊

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

经三阴交注射甲硫酸新斯的明注射液治疗子宫全切术后尿潴留的效果

引用

中外医药研究 2024年第22期3卷 90-92页

作者：董璇菏泽市单县妇幼保健院山东菏泽274300

目的:分析经三阴交注射甲硫酸新斯的明注射液治疗子宫全切术后尿潴留的效果。方法:选取2020年6月—2023年6月于菏泽市单县妇幼保健院行子宫全切术治疗且术后并发尿潴留的患者90例为研究对象,采用数字盲选法分为对照组与观察组,每组45例... 详细信息

目的:分析经三阴交注射甲硫酸新斯的明注射液治疗子宫全切术后尿潴留的效果。方法:选取2020年6月—2023年6月于菏泽市单县妇幼保健院行子宫全切术治疗且术后并发尿潴留的患者90例为研究对象,采用数字盲选法分为对照组与观察组,每组45例。对照组经臀部肌内注射甲硫酸新斯的明注射液,观察组经三阴交注射甲硫酸新斯的明注射液。比较两组临床疗效、排尿情况及不良反应发生率。结果:观察组治疗总有效率高于对照组(P=0.014)。观察组恢复自主排尿时间短于对照组(P0.05);治疗后,两组残余尿量减少,且观察组少于对照组(P<0.001)。观察组不良反应发生率低于对照组(P=0.007)。结论:与肌内注射新斯的明相比,经三阴交穴位注射治疗尿潴留的临床疗效较好,能够促进患者自主排尿,且具有较高的安全性。

关键词：子宫全切术尿潴留甲硫酸新斯的明三阴交

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

三线建设中的政治动员路径研究——以葛洲坝工程早期建设为例(1970—1978)

引用

三峡大学学报（人文社会科学版） 2024年第3期46卷 17-24页

作者：罗萍董璇三峡大学马克思主义学院湖北宜昌443002

葛洲坝工程建设是三线建设中后期动工建设的一项大型水利枢纽工程。运动式政治动员、宣传型政治动员、嵌入化政治动员是葛洲坝工程建设中最突出的政治动员路径。这三种政治动员路径,一体多面地承载了葛洲坝工程局全覆盖、立体化、深渗... 详细信息

葛洲坝工程建设是三线建设中后期动工建设的一项大型水利枢纽工程。运动式政治动员、宣传型政治动员、嵌入化政治动员是葛洲坝工程建设中最突出的政治动员路径。这三种政治动员路径,一体多面地承载了葛洲坝工程局全覆盖、立体化、深渗透的政治动员体系,显示了三线建设时期以政治挂帅为基本要求、以强有力的党组织队伍为纽带依托、以革命理论为话语范式、以集体主义为精神导向、以社会主义工业化和国防安全为直接目标、以民族荣光和人民福祉为根本追求的“革命型”政治动员最普遍的特征。这种政治动员模式对于推进葛洲坝工程早期建设发挥了极为重要的作用,其中凝结的密切党群干群关系、走群众路线、走自己的路等政治动员经验,对于当今凝聚民心团结奋斗致力于中华民族伟大复兴之伟业,仍具有重要历史借鉴意义。

关键词：三线建设葛洲坝工程政治动员

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

基于SR-EKF的UWB/IMU组合室内定位系统

引用

兰州文理学院学报（自然科学版） 2024年第4期38卷 59-63页

作者：董璇姜恩华淮北师范大学物理与电子信息学院安徽淮北235000

UWB定位技术定位精度高、系统结构搭建简单,但在遮挡物影响下性能降低.IMU计算目标位置不受周围环境干扰,长时间工作会存在误差累积.本文提出一种基于平方根扩展卡尔曼滤波法(Square Root-Extended Kalman Filter,SR-EKF)的惯性测量单元... 详细信息

UWB定位技术定位精度高、系统结构搭建简单,但在遮挡物影响下性能降低.IMU计算目标位置不受周围环境干扰,长时间工作会存在误差累积.本文提出一种基于平方根扩展卡尔曼滤波法(Square Root-Extended Kalman Filter,SR-EKF)的惯性测量单元(Inertial Measurement Unit,IMU)/超宽带(Ultra-Wideband,UWB)组合室内定位技术.平方根扩展卡尔曼滤波融合IMU/UWB测量数据,通过提高描述状态量的协方差矩阵精确度,进而对状态量校正.同时能够补偿IMU误差累积,降低加速度计和陀螺仪零偏,克服复杂环境下未知影响,提高定位精度.实验结果显示,定位算法能够有效反馈IMU进行误差补偿,并缩小算法估计位置与真实位置之间的误差值,实现高精度目标定位.

关键词：超宽带 IMU 室内定位平方根扩展卡尔曼滤波

来源：

维普期刊数据库

同方期刊数据库博看期刊评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：