检索结果-南通市图书馆

A Localization Method of High Energy Transients for All-sky Gamma-ray Monitor

在线全文

学校读者我要写书评

暂无评论

Research in Astronomy and Astrophysics 2024年第10期24卷 25-35页

作者： Yi Zhao wangchen Xue Shaolin Xiong Qi Luo Yuanhao wang Jiacong Liu Heng Yu Xiaoyun Zhao Yue Huang Jinyuan Liao Jianchao Sun Xiaobo Li Qi{2. Yi Ce Cai Shuo Xiao Shenglun Xie Chao Zheng Yanqiu Zhang Chenwei wang Wenjun Tan Zhiwei Guo Chaoyang Li Zhenghua An gang Chen Yanqi Du Min Gao Ke Gong Dongya Guo Jiang He Jianjian He {2.g Li gang Li Xinqiao Li Jing Liang Xiaohua Liang Yaqing Liu Xiang ma Rui Qiao Liming Song Xinying Song Xilei Sun Jin wang Ping wang Xiangyang Wen Hong Wu Yan{2.g Xu Sheng Yang Dali Zhang Fan Zhang Hongmei Zhang Peng Zhang Shu Zhang Zhen Zhang Shijie Zheng Keke Zhang Xingbo Han Haiyan Wu Hu Tai Hao Geng Gaopeng Lu Wei Xu Fanchao Lyu Hongbo Zhang Fangjun Lu Shuangnan Zhang Department of Astronomy Beijing Normal UniversityBeijing 100875China Key Laboratory of Particle Astrophysics Institute of High Energy PhysicsChinese Academy of SciencesBeijing 100049China University of chinese {1. of {2. Beijing 100049China School of physics and Optoelectronics Xiangtan UniversityXiangtan 411105China College of physics Hebei Normal UniversityShijiazhuang 050024China Guizhou Provincial Key Laboratory of Radio Astronomy and Data Processing Guizhou Normal UniversityGuiyang 550001China School of physics and Electronic Science Guizhou Normal UniversityGuiyang 550001China institute of Astro{1. Central China Normal UniversityWuhan 430079China College of physics {1.Technology Hebei UniversityBaoding 071002China physics and Space Science College China West Normal UniversityNanchong 637002China School of Computing and Artificial Intelligence Southwest Jiaotong UniversityChengdu 611756China College of Electronic and information Engineering Tongji UniversityShanghai 201804China Innovation academy for Microsatellites of {1. academy of sciences Shanghai 201304China national Space Science {1. Chinese Academy of SciencesBeijing 100190China School of Earth and Space sciences University of Science and Technology of ChinaHefei 230026China Electronic Information School Wuhan UniversityWuhan 430072China Key Laboratory of Transportation Meteorology of china {1. Administration Nanjing Joint Institute for Atmospheric SciencesNanjing 210000China Key Laboratory of Middle Atmosphere and Global Environment Observation Institute of Atmospheric PhysicsChinese Academy of SciencesBeijing 100029China

Fast and reliable localization of high-energy transients is crucial for characterizing the burst properties and guiding the follow-up *** based on the relative counts of different detectors has been widely used for all-sky gamma-ray *** are two major methods for this count distribution localization:χ^(2.minimization method and the Bayesian *** we propose a modified Bayesian method that could take advantage of both the accuracy of the Bayesian method and the simplicity of the χ^(2.*** comprehensive simulations,we find that our Bayesian method with Poisson likelihood is generally more applicable for various bursts than the χ^(2.method,especially for weak *** further proposed a location-spectrum iteration approach based on the Bayesian inference,which could alleviate the problems caused by the spectral difference between the burst and location *** method is very suitable for scenarios with limited computation resources or timesensitive applications,such as in-flight localization software,and low-latency localization for rapidly follow-up observations.

关键词： methods:data analysis methods:analytical (stars:)gamma-ray burst:general

Distinct potential aerosol masses under different scenarios of transport at a suburban site of {1.

在线全文

学校读者我要写书评

暂无评论

Journal of Environmental sciences 2016年第1期28卷 52-61页

作者： Biwu Chu Yongchun Liu Qingxin ma Jinzhu ma Hong He {2. wang Shuiyuan Cheng Xinming wang State Key Joint Laboratory of Environmental Simulation and Pollution Control Research Center for Eco-Environmental SciencesChinese Academy of Sciences Key Laboratory of beijing on Regional Air Pollution Control Beijing University of Technology State Key Laboratory of Organic Geochemistry Guangzhou Institute of Geochemistry Chinese Academy of Sciences

In order to evaluate the secondary aerosol formation potential at a suburban site of {1.,in situ perturbation experiments in a potential aerosol mass（PAM） reactor were carried out in the winter of *** variations... 详细信息

In order to evaluate the secondary aerosol formation potential at a suburban site of beijing,in situ perturbation experiments in a potential aerosol mass（PAM） reactor were carried out in the winter of *** variations of secondary aerosol formation as a function of time,OH exposure,and the concentrations of gas phase pollutants and particles were reported in this *** periods with distinct secondary aerosol formation potentials,marked as Period Ⅰ and Period Ⅱ,were identified during the *** Period Ⅰ,the secondary aerosol formation potential was high,and correlated well to the air pollutants,i.e.,SO2.NO2.and *** maximal secondary aerosol formation was observed with an aging time equivalent to about 3 days of atmospheric *** period Ⅱ,the secondary aerosol formation potential was low,with no obvious correlation with the air ***,the aerosol mass decreased,instead of showing a peak,with increasing aging *** trajectory analysis during the two periods confirmed that the air mass in Period Ⅰwas mainly from local sources,while it was attributed mostly to long distance transport in Period Ⅱ.The air lost its reactivity during the long transport and the particles became highly aged,resulting in a low secondary aerosol formation *** experimental results indicated that the in situ measurement of the secondary aerosol formation potential could provide important information for evaluating the contributions of local emission and long distance transport to the aerosol pollution.

关键词： Potential aerosol mass Local emission Long distance transport Aging In situ perturbation experiments

Emerging contaminants:A One Health perspective

在线全文

学校读者我要写书评

暂无评论

The Innovation 2024年第4期5卷 140-170,139页

作者： Fang wang Leilei Xiang Kelvin Sze-Yin Leung martin Elsner Ying Zhang Yuming Guo Bo Pan Hongwen Sun Taicheng An Guangguo Ying Bryan WBrooks Deyi Hou Damian EHelbling Jianqiang Sun Hao Qiu Timothy MVogel Wei Zhang Yanzheng Gao Myrna JSimpson Yi Luo Scott XChang Guanyong Su Bryan MWong Tzung-may Fu Dong Zhu Karl JJobst Chengjun Ge Frederic Coulon Jean Damascene Harindintwali Xiankui Zeng Haijun wang Yuhao Fu Zhong Wei Rainer Lohmann Changer Chen Yang Song Concepcion Sanchez-Cid Yu wang Ali El-Naggar Yiming Yao Yanran Huang Japhet Cheuk-Fung Law Chenggang Gu Huizhong Shen Yanpeng Gao Chao Qin Hao Li Tong Zhang Natàlia Corcoll Min Liu Daniel SAlessi Hui Li Kristian KBrandt Yolanda Pico Cheng Gu Jianhua Guo Jianqiang Su Philippe Corvini mao Ye Teresa Rocha-Santos Huan He Yi Yang Meiping Tong Weina Zhang Fidèle Suanon Ferdi Brahushi Zhenyu wang Syed AHashsham marko Virta Qingbin Yuan Gaofei Jiang Louis A.Tremblay Qingwei Bu Jichun Wu Willie Peijnenburg Edward Topp Xinde Cao Xin Jiang Minghui Zheng Taolin Zhang Yongming Luo Lizhong Zhu Xiangdong Li DamiàBarceló Jianmin Chen Baoshan Xing Wulf Amelung Zongwei Cai Ravi Naidu Qirong Shen Janusz Pawliszyn Yong-guan Zhu Andreas Schaeffer matthias C.Rillig Fengchang Wu gang Yu James M.Tiedje State Key Laboratory of Soil and Sustainable Agriculture Institute of Soil ScienceChinese Academy of SciencesNanjing 210008China University of chinese {1. of {2. Beijing 100049China Department of Chemistry Hong Kong Baptist UniversityHong KongChina HKBU institute of Research and Continuing Education Shenzhen Virtual University ParkShenzhenChina Technical University of Munich TUM School of Natural SciencesInstitute of Hydrochemistry85748 GarchingGermany School of Resources&Environment Northeast Agricultural UniversityHarbin 150030China Climate Air Quality Research UnitSchool of Public Health and Preventive MedicineMonash UniversityMelbourneVICAustralia Faculty of Environmental Science&Engineering Kunming University of Science&TechnologyKunming 650500China Ministry of Education Key Laboratory of Pollution Processes and Environmental Criteria College of Environmental Science and EngineeringNankai UniversityTianjin 300350China Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control School of Environmental Science and EngineeringInstitute of Environmental Health and Pollution ControlGuangdong University of TechnologyGuangzhou 510006China Ministry of Education Key Laboratory of Environmental Theoretical Chemistry South China Normal UniversityGuangzhouGuangdong 510006China Department of Environmental Science Baylor UniversityWacoTXUSA center for Reservoir and Aquatic Systems Research(CRASR) Baylor UniversityWacoTXUSA School of Environment Tsinghua UniversityBeijing 100084China School of Civil and Environmental Engineering Cornell UniversityIthacaNY 14853USA Key Laboratory of Microbial Technology for Industrial Pollution Control of Zhejiang Province Zhejiang University of TechnologyHangzhou 310014China School of Environmental Science and Engineering Shanghai Jiao Tong UniversityShanghai 200240China Laboratoire d’Ecologie Microbienne Universite Claude Bernard Lyon 1UMR CNRS 5557UMR INRAE 1418VetAgro Sup69622 VilleurbanneFrance Department of Pla

Environmental pollution is escalating due to rapid global development that often prioritizes human needs over planetary *** global efforts to mitigate legacy pollutants,the continuous introduction of new substances remains a major threat to both people and the *** response,global initiatives are focusing on risk assessment and regulation of emerging contaminants,as demonstrated by the ongoing efforts to establish the UN’s Intergovernmental Science-Policy Panel on Chemicals,Waste,and Pollution *** review identifies the sources and impacts of emerging contaminants on planetary health,emphasizing the importance of adopting a One Health *** for monitoring and addressing these pollutants are discussed,underscoring the need for robust and socially equitable environmental policies at both regional and international *** actions are needed to transition toward sustainable pollution management practices to safeguard our planet for future generations.

关键词： pollution planet contaminants

Comparison of inorganic chemical compositions of atmospheric TSP,PM1. and PM2.5 in northern and southern {1. coastal cities

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

Journal of Environmental sciences 2017年第5期29卷 339-353页

作者： Yiding ma Zongshuang {1. Yufei Tan Shu Xu Shaofei Kong {2. Wu Xuefang Wu Hong Li State Key Laboratory of Urban and Regional Ecology Research Centre for Eco-Environmental Sciences Chinese Academy of Sciences Beijing 100085 China State Key Laboratory of Environmental Criteria and Risk Assessment Chinese Research Academy of Environmental Sciences Beijing 100012 China Collaborative Innovation center on Forecast and Evaluation of {1. Disasters Key Laboratory for Aerosol-Cloud-Precipitation of China Meteorological Administration Nanjing University of Information Science and Technology Nanjing 210044 China Uniuersity of chinese {1. of {2. Beijing 100049 China

To compare the inorganic chemical compositions of TSP（total suspended paniculate）,PM1.（particulate matter with an aerodynamic diameter less than 1. μm） and PM2.5（particulate matter with an aerodynamic diameter less than 2.5 μm） in southern and northern cities in china,atmospheric particles were synchronously collected in Dalian（the northern city）and Xiamen（the southern city） in spring and autumn of *** mass concentrations,twenty-three elements and nine soluble ions were *** results show that in Dalian,the mass concentrations of Mg,Al,Ca,Mn and Fe in spring were 4.0-1..1.2.6-8.0,4.1.1.,1.2.3.6 and 2.9-7.9 times higher,respectively,than those in *** dust storm influence is more obvious in Dalian in ***,in Xiamen,heavy metals accounted for 1..9%-1..9%of TSP,while heavy metals contributed to 5.5%-9.3%of TSP in *** concentrations suggest that heavy metal pollution in Xiamen was more *** addition,the concentrations of Na＋,Cl-,Ca2. and Mg2. were higher in Dalian due to the influence of marine aerosol,construction activities and soil *** NO3-/SO42. ratios in Dalian（0.2.-0.49） were lower than those in Xiamen（0.51.0.62.,indicating that the contributions of vehicle emission to particles in Xiamen were *** of divergence values was higher than 0.40,implying that the inorganic chemical composition profiles for the particles of Dalian and Xiamen were quite different from each other.

关键词： Particulate matter Inorganic chemical compositions Differences Dalian city Xiamen city

Pressure level of maximum radiative heating enhancement in response to increasing CO_(2. over the global monsoon area

在线全文

学校读者我要写书评

暂无评论

atmospheric and Oceanic Science Letters 2021年第3期14卷 19-24页

作者： Xia Qu gang Huang Xiaocong {1. center for Monsoon System Research Institute of Atmospheric PhysicsChinese Academy of SciencesBeijingChina State Key Laboratory of Numerical Modeling for atmospheric {1.and Geophysical Fluid Dynamics Institute of Atmospheric PhysicsChinese Academy of SciencesBeijingChina Laboratory for Regional Oceanography and Numerical Modeling Qingdao National Laboratory for Marine Science and TechnologyQingdaoChina University of chinese {1. of {2. BeijingChina

Based on the 1.CO_(2. experiment of CMIP6,in response to increasing CO_(2.,the summer-mean radiative heating(RH)over the global monsoon area(ma)generally features an increasing response in the mid-troposphere and a decreasing response in the lower and upper *** pressure level of the maximum RH increase over the Asian ma is the highest and largest in range(500–775 hPa);the maximum increases over the North African,South American,and Australian ma are at 550–600 hPa;throughout the North American ma,the maximum heating increase is at 600 hPa;and the levels of the maximum over South Africa are 600 and 775 *** most of the global ma,the maximum enhancement of RH is at 500,550,and 600 *** is mainly led by the increase in cloud water at and above the maximum level and the decrease in cloud water below,which leads to similar changes in total cloud *** of the longwave heating(cooling)effect at the cloud base(top),the RH enhancements peak at those *** the northeast part of the Asian ma and southeast part of the South African ma,RH enhancement peaks at 700 and 775 hPa,mainly attributable to the cloud water reduction *** reduction leads to similar changes in total *** to the longwave cooling effect at the cloud top,the reduction contributes to the RH enhancement at the corresponding maximum levels.

关键词： Radiative heating Increasing CO_(2. Global monsoon area Cloud

在线全文

学校读者我要写书评

暂无评论

SAGE巡天介绍Ⅰ--测光系统和数据处理

天文学进展 2018年第2期36卷 101-121页

作者：范舟赵刚王炜赵景昆郑捷谈克峰刘玉娟何维宋轶晗姜晓军马路中国科学院光学天文重点实验室国家天文台北京100101 中国科学院大学天文与空间科学学院北京100049 中国科学院南美天文中心中智联合天文中心智利圣地亚哥7550000 中国科学院新疆天文台乌鲁木齐830011

SAGE(Stellar Abundance and Galactic Evolution)巡天采用一套对恒星大气参数敏感的独特测光系统,包括uSC,vSAGE,g,r,i,Hα_n,Hα_w和λ_(DDO51.(David Dunlap Observatory,DDO)共8个波段。该系统对恒星大气参数(有效温度T_(eff)、表面重力lg g和金属丰度[Fe/H])和星际消光的测量比传统的uvbyβ系统(Str?mgren-Crawford,SC)更敏感。由于g,r,i波段带宽较宽,因而观测效率较高,对恒星大气参数的测量精度和观测效率均超过uvbyβ系统和宽带测光系统。利用美国亚利桑那大学Steward天文台2.3 m Bok望远镜、新疆天文台南山1.m望远镜和乌兹别克斯坦{2.O({2.idanak Astronomical Observatory)1.m望远镜已展开巡天观测。项目计划在约4年时间内完成所有的巡天观测,北天天区覆盖面积约1.000(~?)~2.高精度测光(信噪比为1.0σ)深度约1. {2.g(V波段);5σ探测极限可深至约2. {2.g(V波段)。最终将探测约5×1.8颗恒星,并得出其恒星大气参数以及星际消光。该样本比之前的u,v,b,y,β测光巡天,如GCS(Geneva-Copenhagen Survey)巡天和HM(Hauck and Mermilliod 1.98)巡天,扩展到更深的区域,即深度达到7～8 {2.g(V波段)。利用观测得到的大样本恒星测光星表,可以开展如下课题的研究:(1.得到银河系约5×1.~8颗恒星大样本的金属丰度分布,并根据恒星演化模型得到其年龄分布;(2.预期搜寻到一批贫金属星候选体,并利用其他望远镜进行下一步观测;(3)结合高质量的uSC波段数据,预期可以找到一批白矮星;(4)结合其他星表,预期找到一批长周期变源以及移动天体;(5)结合uSC波段数据和其他星表,预期可以找到一批类星体。

关键词：测光系统数据处理流量定标天测定标银河系结构

Critical climate issues toward carbon neutrality targets

在线全文

学校读者我要写书评

暂无评论

Fundamental Research 2022年第3期2卷 396-400页

作者： gang Huang Zhenhao Xu Xia Qu Junji Cao Shangmin Long Kai Yang Hongyu Hou Ya {1. Xiaofan {2. State Key Laboratory of Numerical Modeling for atmospheric {1.and Geophysical Fluid Dynamics Institute of Atmospheric PhysicsChinese Academy of SciencesBeijing 100029China Laboratory for Regional Oceanography and NumericalModeling Qingdao National Laboratory for Marine Science and TechnologyQingdao 266237China College of Earth and Planetary sciences University of Chinese Academy of SciencesBeijing 100049China institute of {1. {2. Chinese Academy of SciencesBeijing 100029China International Polar Environment Research Laboratory College of OceanographyHohai UniversityNanjing 210098China

In 2.2.,china announced the"emission peak,carbon neutrality"policy,that is,china aims to have CO2.emissions peak before 2.30 and achieve carbon neutrality before *** scenario of carbon neutrality will be significantly distinguished from the scenario we experienced since the industrial ***,instrumental data are unavailable in the future carbon-neutral *** system models and cli{2.te dynamics theory are needed to comprehend and project the cli{2.te *** this paper,we illustrate our perspective of the issues related to"emission peak,carbon neutrality",including cli{2.te dynamics,cli{2.te-carbon feedback,interaction between china and global cli{2.te and carbon emissions and solutions,*** highlight that cli{2.te change has profoundly affected hu{2.n production and *** frequent occurrence of extreme weather disasters in recent years,together with the impact of epidemics,{2.ke the future"carbon peak&carbon-neutral"scenario more *** is whopping uncertainty but also a {2.ssive challenge to the scientific ***,carbon neutrality is closely related to domestic production and lives,and there is little time left for *** believe that we will {2.ke a breakthrough in cli{2.te dynamics in the context of carbon neutrality with our joint efforts,which will serve our country’s carbon emission policy at different stages.

关键词： Carbon neutrality Climate dynamics Climate-carbon feedback Diplomacy Possible solutions Future prospect

Long-term analysis of clear nights using satellite data considering astronomical sites in western china

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

Research in Astronomy and Astrophysics 2020年第6期20卷 96-108页

作者： Zi-Huang Cao Li-Yong Liu Yong-Heng Zhao Lu Feng Hugh RAJones Huang Shen Jin-Xin Hao Yan-Jie Xue Yong-Qiang Yao Jing Xu Ali Esamdin Zhao-Xiang Qi Jian-Rong Shi Jian Li Yuan Tian Zheng wang Tai-Sheng Yan Xia wang Jian-Ping Xiong Si-Cheng Yu Jun-Bo Zhang Zhi-Xia Shen Yun-Ying Jiang Jia Yin Guang-Xin Pu Peng Wei Chun-Hai Bai Guo-Jie Feng Lu {2. Teng-Fei Song Jian-Feng wang Jian-Feng Tian Xian-Qun Zeng Zhi-gang Hou Shi-Long Liao Zhi-Song Cao Dong-Wei Fan Yun-Fei Xu Chang-Hua Li Yi-Han Tao national Astronomical Observatories Chinese Academy of SciencesBeijing 100101China University of chinese {1. of {2. Beijing 100049China Shanghai Astronomical Observatory Chinese Academy of SciencesShanghai 200030China Centre for Astrophysics University of HertfordshireHatfieldUK School of Journalism.Communication University of china Beijing 100024China Xinjiang Astronomical Observatory Chinese Academy of SciencesUrumqi 830011China Yunnan Observatories Chinese Academy of SciencesKunming 650216China

A large ground-based optical/infrared telescope is being planned for a world-class astronomical site in *** cloud-free night percentage is the primary {1. consideration for evaluating candidate *** data from GMS and NOAA satellites and the MODIS instrument were utilized in this research,covering the period from 1.96 to *** data analysis benefits from overlapping results from different independent teams as well as a uniform analysis of selected sites using GMS+NOAA *** significant ground-based monitoring is needed to validate these findings,we identify three different geographical regions with a high percentage of cloud-free conditions(~83%on average),which is slightly lower than at mauna Kea and Cerro Armazones(~85%on average)and were chosen for the large international projects TMT and ELT *** study finds evidence that cloud distributions and the seasonal changes affected by the prevailing westerly winds and summer monsoons reduce the cloud cover in areas influenced by the *** is consistent with the expectations from climate change models and is suggestive that most of the identified sites will have reduced cloud cover in the future.

关键词： methods statistical-site testing-atmospheric effects-MODIS