检索结果-内蒙古大学图书馆

Development of a Method to Determine the environmental Burden of Diseases and an Application to Identify Factors Driving Changes in the Number of PM_(2.5)-Related Deaths in China between 2000 and 2010

引用

environment & Health 2024年第9期2卷 642-650页

作者： Ning Kang Pengfei Li Tao Xue Tong Zhu Institute of Reproductive and Child Health National Health Commission Key Laboratory of Reproductive Health/Department of Epidemiology and BiostatisticsMinistry of Education Key Laboratory of Epidemiology of Major Diseases(PKU)School of Public HealthPeking University Health Science CenterBeijing 100191China Institute of Medical Technology Peking University Health Science CenterBeijing 100191China Advanced Institute of Information Technology Peking UniversityHangzhou 311215China State Environmental Protection Key Laboratory of Atmospheric Exposure and Health Risk Management and Center for Environment and HealthPeking UniversityBeijing 100871China State Environmental Protection Key Laboratory of Atmospheric Exposure and Health Risk Management and Center for Environment and Health and State Key Joint Laboratory of Environment Simulation and Pollution ControlCollege of Environmental Sciences and EngineeringPeking UniversityBeijing 100871China

The attributable burden is codetermined by the exposure level and nontarget ***,the conventional method of health impact assessment based on preestablished exposure−response functions includes only a few well-known characteristics and thus is insufficient to capture the comprehensive *** aimed to develop a method to fuse health impact assessment with epidemiological analysis and to identify factors driving baseline *** method was applied to identify the factors underlying the change in the number of fine particulate matter(PM_(2.5))related deaths in China between 2000 and *** the study period,the number of PM_(2.5)-related deaths across China's Mainland increased by 0.62(95%CI:0.57,0.69)million,with 0.65(95%CI:0.47,0.91)million,0.55(95%CI:0.39,0.79)million,and 0.11(95%CI:0.06,0.18)million deaths being associated with increased PM_(2.5)exposure,population aging,and growth in population size,***,economic growth,urbanization,improvement of welfare services,and improvement of hospital services resulted in 0.25(95%CI:0.15,0.40)million,0.16(95%CI:0.10,0.27)million,0.16(95%CI:0.09,0.26)million,and 0.09(95%CI:0.05,0.15)million fewer deaths,*** indicated that increased exposure was the major driver of the change in the number of PM_(2.5)-related deaths,and economic growth was the main driver of increased resilience to air pollution.

关键词： health burden decomposition analysis air pollution fine particulate matter premature deaths

来源：评论

学校读者我要写书评

暂无评论

Application Prospect of Fission-Powered Spacecraft in Solar System Exploration Missions

引用

Space(science & technology) 2021年第1期2021卷 309-323页

作者： Y.Xia J.Li R.Zhai J.Wang B.Lin Q.Zhou Beijing Institute of Spacecraft Environment Engineering BeijingChina Science and Technology on Reliability and Environmental Engineering Laboratory BeijingChina Institute of Nuclear and New Energy Technology of Tsinghua University The Key Laboratory of Advanced Reactor Engineering and SafetyMinistry of EducationBeijingChina

Fission power is a promising technology,and it has been proposed for several future space *** is being considered for highpower missions whose goal is to explore the solar system and even *** fission power has made great progress when NASA’s 1 kWe Kilowatt Reactor Using Stirling technology(KRUSTY)prototype completed a full power scale nuclear test in *** success stimulated a new round of research competition among the major space *** article reviews the development of the Kilopower reactor and the KRUSTY system *** summarizes the current missions that fission reactors are being considered as a power and/or propulsion *** projects include visiting Jupiter and Saturn systems,Chiron,and Kuiper belt object;Neptune exploration missions;and lunar and Mars surface base *** studies suggest that the Fission Electric Propulsion(FEP)/Fission Power System(FPS)is better than the Radioisotope Electric Propulsion(REP)/Radioisotope Power System(RPS)in the aspect of cost for missions with a power level that reaches~1 kWe,and when the power levels reaches~8 kWe,it has the advantage of lower *** a mission that travels further than~Saturn,REP with plutonium may not be cost acceptable,leaving FEP the only *** missions prefer the use of FPS because it satisfies the power level of 10’s kWe,and FPS vastly widens the choice of possible landing *** to the current situation,we are expecting a flagship-level fission-powered space exploration mission in the next 1-2 decades.

关键词： satis Saturn isotope

来源：评论

学校读者我要写书评

暂无评论

Pt and Te codoped ultrathin MoS_(2) nanosheets for enhanced hydrogen evolution reaction with wide pH range

引用

Rare Metals 2022年第2期41卷 378-384页

作者： Cui-Hua An Wei Kang Qi-Bo Deng Ning Hu National Engineering Research Center for Technological Innovation Method and Tool School of Mechanical EngineeringHebei University of TechnologyTianjin 300401China Key Laboratory of Advanced Energy Materials Chemistry(MOE) College of ChemistryNankai UniversityTianjin 300071China Institute for New Energy Materials&Low-Carbon Technologies School of Materials Science and EngineeringTianjin University of TechnologyTianjin 300384China State Key Laboratory of Reliability and Intelligence Electrical Equipment Hebei University of TechnologyTianjin 300130China

Transition metal dichalcogenides,especially MoS_(2),have been examined as promising catalysts for hydrogen evolution reaction(HER).Meanwhile,MoS_(2)with various nanostructures and exposed more active sites has been broadly explored for boosting the HER performances at wide pH ***,a synergistic Pt and Te codoping strategy has been used to enhance the catalytic performance(including reducing the overpotential and promoting the HER reaction kinetics)of ultrathin MoS_(2)nanosheets in alkaline and acid electrolytes,which has delivered better than single Pt doping or single Te doping.

关键词： doping kinetics synergistic

来源：评论

学校读者我要写书评

暂无评论

Long-term trend of water vapor over the Tibetan Plateau in boreal summer under global warming

引用

science China Earth sciences 2022年第4期65卷 662-674页

作者： Jingwen YU Qingquan LI Yihui DING Jie ZHANG Qingyuan WU Xinyong SHEN Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters/Key Laboratory of Meteorological Disaster Ministry of Education/Joint International Research Laboratory on Climate and Environment ChangeNanjing University of Information Science&TechnologyNanjing 210044China Laboratory for Climate Studies National Climate CenterChina Meteorological AdministrationBeijing 100081China Southern Marine Science and Engineering Guangdong Laboratory(Zhuhai) Zhuhai 519082China

In this study,the long-term trend of water vapor over the Tibetan Plateau(TP)in boreal summer is investigated by using observation and reanalysis data from 1979 to *** historical experiment simulations of 19 models that participated in the Coupled Model Intercomparison Project phase 6(CMIP6)are evaluated,and the future variation tendency under four emission scenarios is *** results indicate that the water vapor content and the net water vapor budget over the TP show notable increasing trends,which are mainly manifested by a significant increase in the net water vapor import and a significant decrease in the water vapor export on the eastern boundary of the *** is mainly due to an anomalous anticyclone from Lake Baikal to the Mongolian *** CMIP6 multi-model ensemble can well simulate the variation characteristics of the TP net water vapor *** projection results indicate that by the end of the twenty-first century,the water vapor content,the net water vapor import and precipitation over the TP will *** a high-emissions scenario and compared with the current period(1991–2014),these three variables will increase by 47.99%,59.77%and 18.59%in the long term(2081–2100),*** significant enhancement of meridional water vapor transport over the northern TP may be the main reason for the increase in humidity over the TP.

关键词： Tibetan Plateau Boreal summer Water vapor transport Long-term trend Projection

来源：评论

学校读者我要写书评

暂无评论

Biochar application in remediating salt-affected soil to achieve carbon neutrality and abate climate change

引用

Biochar 2023年第1期5卷 778-802页

作者： Qiang Liu Kudakwashe Meki Hao Zheng Yanfei Yuan Mengying Shao Xianxiang Luo Xiaoyun Li Zhixiang Jiang Fengmin Li Baoshan Xing Institute of Coastal Environmental Pollution Control College of Environmental Science and EngineeringSanya Oceanographic InstitutionMinistry of Education Key Laboratory of Marine Environment and EcologyFrontiers Science Center for Deep Ocean Multispheres and Earth SystemOcean University of ChinaQingdao 266100China Marine Ecology and Environmental Science Laboratory Pilot National Laboratory for Marine Science and TechnologyQingdao 266071China Department of Environmental Science School of Geography and TourismShaanxi Normal UniversityXi’an 710119China College of Environmental Science and Engineering Qingdao UniversityQingdao 266071China Stockbridge School of Agriculture University of MassachusettsAmherstMA 01003USA

Salt-affected soils urgently need to be remediated to achieve the goals of carbon neutrality and food *** reviews are available on biochar performance in remediating salt-affected soils in the context of carbon neutrality and climate change *** work summarized the two pathways to achieve carbon neutrality during remediating salt-affected soils using biochars,i.e.,biochar production from sustainable feedstock using thermal technologies,application for promoting plant productivity and mitigating greenhouse gas(GHG)*** biomass wastes into biochars can reduce GHG emission and promote carbon dioxide removal(CDR),and collection of halophyte biomass as biochar feedstocks,development of biochar poly-generation production systems with carbon neutrality or negativity could be promising *** can effectively improve plant growth in salt-affected soils,showing that the grand mean of plant productivity response was 29.3%,via improving physicochemical characteristics,shifting microbial communities,and enhancing plant ***,biochar can mitigate GHG emission via inducing negative priming effect,improving soil properties,changing microbial communities associated with carbon and nitrogen cycle,direct adsorption of ***,biochar also may pose negative effects on plant growth because of stress of toxic compounds and free radicals,and deterioration of soil *** promoted GHG emission is mainly ascribed to positive priming effect,and provision of labile carbon and inorganic nitrogen fractions as microbial ***,this review pointed out the gaps in the current studies and the future ***,the development of“carbon neutral”or“carbon negative”biochar production system,balancing the relationship of biochar effectiveness and functionality with its environmental risks and costs,and designing biochar-based GHG adsorbents would be important directions for remediating salt-affecte

关键词： Carbon neutrality Salinization Greenhouse gas emission Soil remediation Carbon sequestration

来源：评论

学校读者我要写书评

暂无评论

Diel Patterns in the Composition and Activity of Planktonic Microbes in a Subtropical Bay

引用

Ocean-Land-Atmosphere Research 2024年第1期3卷 298-308页

作者： Songze Chen Muhammad Zain Ul Arifeen Minxu Li ShuaiShuai Xu Hao Wang Siruo Chen Jianchang Tao Kangli Guo Rongman Yan Yan Zheng Shengwei Hou Chuanlun Zhang Shenzhen Key Laboratory of Marine Archaea Geo-Omics Department of Ocean Science and EngineeringSouthern University of Science and TechnologyShenzhen 518000China Shenzhen Ecological and Environmental Monitoring Center of Guangdong Province Shenzhen 518049China College of Life Science and Technology Jinan UniversityGuangzhou 510632China Department of Mechanics and Aerospace Engineering Southern University of Science and TechnologyShenzhen 518055China School of Environmental Science and Engineering Southern University of Science and TechnologyShenzhen 518000China Shanghai Key Laboratory of Polar Life and Environment Sciences Shanghai Jiao Tong UniversityShanghai 200030China Key Laboratory of Polar Ecosystem and Climate Change Shanghai Jiao Tong UniversityShanghai 200030China Shanghai Sheshan National Geophysical Observatory Shanghai Earthquake AgencyShanghai 200062China

Planktonic microbes play a crucial role in the matter transformation and energy transfer of marine *** microbial communities are profoundly influenced by various environmental factors,and their variations are typically investigated in a time-dependent ***,studies conducted on a monthly or annual basis do not offer sufficient temporal resolution to reveal changes that can occur on an hourly *** conducted a high-resolution time-series study using amplicon sequencing on seawater samples taken at 2-h intervals over a 3-d period from the subtropical Daya Bay to investigate changes in the microbial community composition and *** results showed that 46.8%of the microbial rRNA sequences exhibited circadian rhythms,including phytoplankton(e.g.,Bacillariophyta,Cryptophyta,and Dinophyceae),heterotrophic bacteria(e.g.,Actinomarinaceae,Flavobacteriaceae,and SAR11_clade),and zooplankton(e.g.,Bestiolina and Phyllopharyngea).The genera of Bacillariophyta(e.g.,Chaetoceros and Pseudo-nitzschia)exhibited higher activity than those of Chlorophyta(e.g.,Micromonas).A similar trend was observed for zooplankton,where Choanozoa(e.g.,Copepoda)showed a strong circadian rhythm in abundance whereas Ciliophora(e.g.,Pithites)were more *** intensity and tides were identified as the driving factors behind the periodic succession and activity of the heterotrophic bacteria and phytoplankton with the exception of picocyanobacteria,which were mainly influenced by fluctuations in temperature,nutrients,and *** high-resolution time-dependent observations showed that,despite the dynamic coastal environment,the periodic changes in the microbial community and activity were distinct and phylogenetically *** findings may help in the development of ecosystem models for predicting microbial abundance and activity in rapidly changing coastal and estuary environments.

关键词： coastal estuary tides

来源：评论

学校读者我要写书评

暂无评论

Research on Degradation Characteristics of Ultrasonic Motors Based on Accelerated Storage Test

Research on Degradation Characteristics of Ultrasonic Motors...

引用

International Symposium on System and Software reliability (ISSSR)

作者： Zemin Yao Shouqing Huang Huiming Zheng Hao Wang Pengfei Wang Beijing Key Laboratory of Environment and Reliability Test Technology for Aerospace Mechanical and Electrical Products Beijing P.R. China Key Laboratory of Reliability and Environmental Engineering Technology for National Defense Science and Technology Beijing P.R. China Beijing Institute of Spacecraft Environment Engineering Beijing P.R. China

This paper mainly uses the method of load spectrum compression to equivalently compress the long-term storage time of ultrasonic motors. According to the Arrhenius model and N-L model, the motor’s 18-year storage life is compressed into 18 environmental test profiles. Then, a test system was built to conduct critical performance testing at different time points during the test process. The measured impedance frequency response data, starting torque and locked torque were statistically analyzed. It was found that the resonant frequency of the ultrasonic motor gradually decreased with the prolongation of the storage test time; the starting torque increased gradually with the prolongation of the storage time; and the locked torque showed no obvious regularity with time. The reasons for these characteristics were briefly analyzed, providing reference data for the design improvement of ultrasonic motors.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Crustal thickness,V_(P)/V_(S) ratio,and shear wave velocity structures beneath Myanmar and their tectonic implications

引用

Earthquake Research Advances 2022年第1期2卷 15-21页

作者： Lay Nwe Zigen Wei Zhiwei Li Feng Bao Xuelei Li Jintao Hu State Key Laboratory of Geodesy and Earth's Dynamics Innovation Academy for Precision Measurement Science and TechnologyChinese Academy of SciencesWuhan430077China Science and Technology on Reliability and Environmental Engineering Laboratory Beijing Institute of Spacecraft Environment EngineeringBeijing100094China School of Science Hunan University of Technology and BusinessChangsha410205China Department of Meteorology and Hydrology Ministry of Transport and CommunicationsMyanmar Hebei University of Engineering Handan056009China

The crustal structure in Myanmar can provide valuable information for the eastern margin of the ongoing IndoEurasian collision *** successively performed H-k stacking of the receiver function and joint inversion of the receiver function and surface wave dispersion to invert the crustal thickness(H),shear wave velocity(V_(S)),and the V_(P)/V_(S) ratio(k)beneath nine permanent seismic stations in Myanmar.H was found to increase from 26 km in the south and east of the study area to 51 km in the north and west,and the V_(P)/V_(S) ratio was complex and *** differences in the crust were observed for different tectonic *** the Indo-Burma Range,the thick crust(H~51 km)and lower velocities may be related to the accretionary wedge from the Indian *** the Central Myanmar Basin,the thin crust(H=26.9-35.5 km)and complex V_(P)/V_(S) ratio and V_(S) suggest extensional *** the Eastern Shan Plateau,the relatively thick crust and normal V_(P)/V_(S) ratio are consistent with its location along the western edge of the rigid Sunda Block.

关键词： Myanmar Crustal thickness VP/VSratio Shear wave velocity Receiver function Surface wave dispersion

来源：评论

学校读者我要写书评

暂无评论

Effect of proton irradiation dose rate and implanted hydrogen ions on spinodal decomposition in thermally aged EQ308L stainless steel weld metal 4

Effect of proton irradiation dose rate and implanted hydroge...

引用

2023 4th International Conference on Material Chemistry and Composite Materials, MCCM 2023

作者： Li, Yuanfei Peng, Jianchao Yin, Jian Liang, Xue Yang, Xiaofeng Xu, Chaoliang Jia, Wenqing Quan, Qiwei Qian, Wangjie Liu, Xiangbing Liu, Wenqing Material Engineering Technology Center Suzhou Nuclear Power Research Institute Suzhou215004 China Institute of Materials School of Materials Science and Engineering Shanghai University Shanghai200444 China Key Laboratory for Microstructures Shanghai University Shanghai200444 China National Engineering Research Center for Nuclear Power Plant Safety and Reliability Suzhou215004 China

Stainless steel welds with a ferritic phase are extensively utilized in nuclear power plants. Spinodal decomposition stands as the primary factor contributing to the degradation of their service performance. Ion irradiation has been widely employed to investigate the damage behavior of materials. However, varying irradiation parameters, such as dose rate and implanted ions, are believed to result in significant differences in the extent of spinodal decomposition. In this paper, proton irradiation experiments were conducted at different dose rates on thermally aged EQ308L stainless steel welds. Spinodal decomposition within the ferrite at various radiation depths was compared and analyzed by using atom probe tomography to unveil the effects of dose rate and implanted hydrogen ions. The results reveal that, under conditions of high dose rate irradiation, spinodal decomposition can be partially alleviated when compared to the initial thermally aged state. Conversely, under low dose rate irradiation conditions, spinodal decomposition exhibits an enhancement trend. This difference may be attributed to the interplay between irradiation-enhanced diffusion and atomic mixing. Therefore, the dose rate significantly influences the progression of spinodal decomposition. Furthermore, implanted hydrogen ions may also inhibit spinodal decomposition within the ferrite, potentially by promoting the recombination of irradiation defects. © Published under licence by IOP Publishing Ltd.

关键词： Ferrite

来源：评论

学校读者我要写书评

暂无评论

Integration of the grey relational analysis with machine learning for sucrose anaerobic hydrogen production prediction

引用

International Journal of Hydrogen Energy 2024年 68卷 388-397页

作者： Wang, Xianze Wang, Yifan Tseng, Yu-Yao Gao, Yidi Li, Keqing Wang, Ming-Hung Wu, Jinghui Lay, Chyi-How Huo, Mingxin Engineering Research Center of Low-Carbon Treatment and Green Development of Polluted Water in Northeast China Ministry of Education School of Environment Northeast Normal University Changchun130117 China Science and Technology Innovation Center for Municipal Wastewater Treatment and Water Quality Protection Northeast Normal University Changchun130117 China Key Laboratory of Songliao Aquatic Environment Ministry of Education Jilin Jianzhu University Changchun130118 China Master's Program of Green Energy Science and Technology Feng Chia University Taichung40724 Taiwan Department of Computer Science and Information Engineering National Chung Cheng University Chiayi County Taiwan

Anaerobic fermentation for hydrogen production is influenced by various environmental factors that can limit microbial activity. However, machine learning (ML) shows significant potential in explaining the complexity of biological processes. This study focuses on the application of ML in predicting hydrogen production rates (HPR) during anaerobic fermentation of biomass energy. Grey relation analysis was employed to investigate the correlation between operational parameters and HPR. Five ML algorithms, namely decision tree (DT), random forest (RF), extreme gradient boosting (XGBoost), and K-nearest neighbor (KNN), were utilized in conjunction with operating conditions and digestate characteristics as features, with HPR as the target variable. The evaluation of the models was conducted using mean squared error (MSE) and R squared (R2). Notably, butyrate, oxidation-reduction potential (ORP), and volatile suspended solids (VSS) were identified as key factors influencing hydrogen production during sucrose anaerobic fermentation. Among the ML algorithms tested, XGBoost achieved the highest accuracy, with an R2 value of 0.91 and an MSE of 0.0052. © 2024 Hydrogen Energy Publications LLC

关键词： Machine learning

来源：评论

学校读者我要写书评

暂无评论

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

请选择保存的检索档案：

请选择收藏分类：

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

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

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：