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Record Arctic Ozone Loss in Spring 2.2. is Likely Caused by North Pacific Warm Sea Surface Temperature Anomalies

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Advances in Atmospheric sciences 2021年第10期38卷 1723-1736页

作者： Yan XIA Yongyun hu Jiankai ZHANG Fei XIE Wenshou tian College of Global Change and earth System Science Beijing Normal UniversityBeijing 100875China Key Laboratory of Middle Atmosphere and Global Environment Observation Institute of Atmospheric PhysicsChinese Academy of SciencesBeijing 100029China Laboratory for Climate and Ocean-Atmosphere Studies Department of Atmospheric and Oceanic SciencesSchool of PhysicsPeking UniversityBeijing 100871China College of Atmospheric sciences Lanzhou UniversityLanzhou 730000China

Record ozone loss was observed in the Arctic stratosphere in spring *** study aims to determine what caused the extreme Arctic ozone *** and simulation results are examined in order to show that the extreme Arctic ozone loss was likely caused by record-high sea surface temperatures(SSTs)in the North *** is found that the record Arctic ozone loss was associated with the extremely cold and persistent stratospheric polar vortex over February-April,and the extremely cold vortex was a result of anomalously weak planetary wave *** analysis reveals that the weak wave activity can be traced to anomalously warm SSTs in the North *** observations and simulations show that warm SST anomalies in the North Pacific could have caused the weakening of wavenumber-1 wave activity,colder Arctic vortex,and lower Arctic *** results suggest that for the present-day level of ozone-depleting substances,severe Arctic ozone loss could form again,as long as certain dynamic conditions are satisfied.

关键词： Arctic ozone loss stratospheric polar vortex sea surface temperature planetary-scale wave climate change

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海南鼠戊型肝炎病毒基因遗传进化分析

海南医学院学报 2024年第20期30卷 1521-1526页

作者：汤婷田秀颖邓宛心李子涵杨聘雷胜杜江尹飞飞崔秀吉海南医学院基础医学与生命科学学院热带病转化医学教育部重点实验室海南医学院-香港大学热带传染病联合实验室海南医学院第一附属医院重大疾病生物样本资源海南省工程研究中心海南海口571199 中国医学科学院病原生物学研究所北京100005

目的:戊型肝炎病毒(hepatitis E virus,HEV)属于戊型肝炎病毒科(Hepeviridae),包括四个属,即HEV-A、-B、-C和-D。HEV是一种正单链,长约7 kb的裸露RNA病毒,可以引起急、慢性戊型肝炎,特别是孕妇感染HEV后死亡率较高。目前,普遍认为只有HE... 详细信息

目的:戊型肝炎病毒(hepatitis E virus,HEV)属于戊型肝炎病毒科(Hepeviridae),包括四个属,即HEV-A、-B、-C和-D。HEV是一种正单链,长约7 kb的裸露RNA病毒,可以引起急、慢性戊型肝炎,特别是孕妇感染HEV后死亡率较高。目前,普遍认为只有HEV-A对人类具有致病性。然而,近期在中国香港、西班牙和中非等地区陆续报告由HEV-C,即鼠戊型肝炎病毒感染引起的戊型肝炎病例,说明HEV-C也是一种人兽共患病毒,可传染于人类。在前期工作中,课题组从海南省澄迈县捕获的褐家鼠粪便中检测到了HEV-C基因部分片段。为进一步了解海南HEV-C基因分子特征,本研究中扩增了HEV-C全长基因,并对其进行了系统发育分析。方法:使用Trizol试剂从海南省澄迈县捕获的褐家鼠粪便中分离HEV RNA,并利用Oligo dT引物进一步转录合成cDNA。接着用PCR方法扩增HEV的四个ORF区,并用Sanger法测序,拼接全长HEV基因。利用MEGA X软件的Clustal W方法与参考序列进行比对,并构建系统进化树。结果:通过系统进化树分析发现本研究中扩增的HEV-C为C1型,与广东省湛江市褐家鼠中发现的HEV-C1(基因号:LC549184)的同源性是93.1%,但与我国云南省、香港特别行政区和湖北省等地区的同源性比较远,分别为65.7%、65.9%、85.4%。结论:本研究首次针对海南省褐家鼠携带HEV-C1全长基因进行了系统进化分析。该研究结果提示海南省存在HEV-C的鼠-人传播的潜在风险。因此,应继续控制鼠类的同时,也应预防鼠HEV传染人类的风险。

关键词：肝炎啮齿类动物鼠戊型肝炎病毒海南

The Volcanic Tourism Development Research Based on the SWOT Analysis, in Northeastern Inner Mongolia , china

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The Volcanic Tourism Development Research Based on the SWOT ...

Status of aquatic organisms resources and their environments in Yangtze River system(2.17-2.2.)⋆

第五届全国计算机数学学术会议

作者： Lili Wang mingzhong tian school of earth {2. and Resources China University of Geosciences

The northeastern volcanic area in Inner Mongolia, relies on its unique tourism resources,tourism is booming, and has established geo-parks. On the basis of the research, this paper makes a SWOT analysis to volcanic tourism development in the region, and our study indicates that the development of deep-seated cultural factors and volcanic culture in the area, is a unique and broad prospect for the development direction, and suggests that the area united declare Global Geo-park in order to spur the development of local tourism.

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Aquaculture and Fisheries 2024年第5期9卷 833-850页

作者： Haile Yang Li Shen Yongfeng He huiwu tian Lei Gao Jinming Wu Zhigang Mei Nian Wei Lin Wang Tingbing Zhu {3. Jinling Gong Hongchun Du Xinbin Duan huatang Deng Daoqun Wang Fengyue Zhu Yunfeng Li Fan Wu huijun Ru Yan Zhang Junyi Li Junlin Yang Yuntao Zhou Dongdong Fang Yinping Wang Danqing Lin Yanping Yang Peijie Li Silei Liu Jian Yang Ping Zhuang Sikai Wang Tao Zhang Gang Yang Wenbo Yang Lilai Yuan Kun Cao Shuo Xu huiyuan Liu Zhiqiang Liang Chongrui Wang Hong Li Xiping Yuan Xin Yang Yilong Fu Yanping Zhang Haixin Zhang Zhiying Tao Sheng Wang Xiaoping Gao Binsong Jin Kemao Li Guojie Wang Shenglong Jian Yingqin Li Chenjiang Xue Chunyun Lei Shaowei Xue Yi Sun Bin Zhu Ke Shao Xingkun hu Meihua Xiong Jun Du Bin He Tao Yan Yingying huang Yuanchao Zou Biwen Xie Yongming Wang Bin Li Fei Liu Yaoyao Zhang Fei Fan Zhijian Wang Jing huang Haoran Gu Hailong Ge Yan Dan Yan Li Shuqiao Wang Chuang Zhang Lu Zhou Xue Wang Sheng Zeng Yan Xiang Xugang He Jianhui Qin Chengxing Xia Jie Hou Yifu Shi Lifang Gao Zhiqiang Zhu Hongbao Shen Yun Du Xuejun Duan Jiawu Xiong Deguo Yang Shaoping Liu Zhaohui Ni hui Zhang Kai Liu Feng Zhao Yingren Li Jianwei Wang Qiwei Wei Yangtze River Fisheries Research Institute Chinese Academy of Fishery SciencesWuhan430223China Institute of Hydrobiology Chinese Academy of SciencesWuhan430072China Fishery Resource and Environment Research Center Chinese Academy of Fishery SciencesBeijing100141China Key Laboratory of Freshwater Fisheries and Germplasm Resources Utilization Ministry of Agriculture and Rural AffairsFreshwater Fisheries Research CenterChinese Academy of Fishery SciencesWuxi214081China East china Sea Fisheries Research Institute Chinese Academy of Fishery SciencesShanghai200090China Institute of Fisheries Engineering Chinese Academy of Fishery SciencesBeijing100141China hunan Fisheries Science Institute Changsha410153China Jiangxi Fisheries Research Institute Nanchang330039China Jiujiang Academy of Fishery sciences Jiujiang332000China school of Life sciences Nanchang UniversityNanchang330031China Qinghai Provincial Fishery Technology Extension Center Xining810012China Yunnan Academy of Fishery sciences Kunming650111China Institute of Hydroecology Ministry of Water Resources and Chinese Academy of SciencesWuhan430079China Fisheries Institute Sichuan Academy of Agricultural SciencesChengdu611731China school of Life sciences Neijiang Normal UniversityNeijiang641100China school of Life sciences Southwest UniversityChongqing400715China Chongqing Fishery sciences Research Institute Chongqing401120China Guizhou Fisheries Research Institute Guiyang550025China College of Fisheries Huazhong Agricultural UniversityWuhan430072China hubei Fisheries Science Research Institute Wuhan430070China Shaanxi Fisheries Research Institute Xi’an710086China Innovation Academy for Precision Measurement Science and Technology Chinese Academy of SciencesWuhan430077China Nanjing Institute of Geography and Limnology Chinese Academy of SciencesNanjing210008China Central South Inventory and Planning Institute of State Forestry and Grassland Administration Changsha410014China

The Yangtze River is the mother river of *** promote the aquatic ecosystem protection of the great river,the Project of Yangtze Fisheries Resources and Environment Investigation(2.17-2.2.)supported by the Ministry of Agriculture and Rural Affairs,*** carried out by 2. institutes and universities that located in the Yangtze River basin surveys the status of(1)fish species composition and spatial distribution,(2.current fish abundance,(3.endangered fishes,(4)Yangtze finless porpoise,(5)aquatic eco-environments,(6)water-level fluctuation areas,(7)capture fisheries and recreational fisheries of the Yangtze River mainstream and 10 of its main tributaries,including Yalong River,Heng River,Min River(including Dadu River),Chishui River,Tuo River,Jialing River,Wu River,Han River,Dongting Lake and Poyang *** results showed that there were 443.fish species(belonging to 163.genus,3. families,and 18 orders)before 2.17,but only 3.0} fish species(including 15 new recorded exotic species)were recorded in the project of *** them,Cyprinus carpio,Carassius auratus,Hypophthalmichthys molitrix,Pelteobagrus fulvidraco,Coilia brachygnathus,Silurus asotus,Saurogobio dabryi,Ctenopharyngodon idellus,Pelteobagrus nitidus,Hemiculter leucisculus,Siniperca chuatsi,Coreius heterodon,Culter alburnus,Parabramis pekinensis,and Aristichthys nobilis were the dominant species across the whole Yangtze River *** is estimated that there were 886 million individuals weighing 12..8 million kg,merely equivalent to 2..3.of the resources in 1950s,3..9%of the resources in 1960s,or 58.7%of the resources in *** the new list of protected fishes that recorded in the Yangtze River system,only 15 of 2. were collected in this project of *** gladius has been affirmed to be Extinct by International Union for Conservation of Nature(IUCN).The wild individuals of Tenualosa reevesii and Luciobrama macrocephalus have disappeared for many years and maybe have been extinct

关键词： Fishes Yangtze finless porpoise Resources Aquatic ecosystem Fisheries Background investigation Yangtze river system

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喜马拉雅吉隆花岗伟晶岩中锂矿物的研究

岩石学报 2024年第2期40卷 484-498页

作者：田恩农谢磊王汝成吴福元内生金属矿床成矿机制研究国家重点实验室南京大学地球科学与工程学院南京210023 河北地质大学河北省岩石矿物材料绿色开发重点实验室宝石与材料学院石家庄050031 河北省战略性关键矿产研究协同创新中心石家庄050031 中国科学院地质与地球物理研究所岩石圈演化国家重点实验室北京100029 中国科学院大学地球与行星科学学院北京100049

喜马拉雅造山带中部的吉隆岩体出露有大量淡色花岗岩和花岗质伟晶岩,已有文献报道该岩体英雄沟和扎龙沟淡色花岗岩和伟晶岩中有铁锂云母、锂云母、锂辉石等锂矿物产出。本次研究对吉隆岩体北部扎龙沟的伟晶岩进行了岩相学和矿物学研究,... 详细信息

喜马拉雅造山带中部的吉隆岩体出露有大量淡色花岗岩和花岗质伟晶岩,已有文献报道该岩体英雄沟和扎龙沟淡色花岗岩和伟晶岩中有铁锂云母、锂云母、锂辉石等锂矿物产出。本次研究对吉隆岩体北部扎龙沟的伟晶岩进行了岩相学和矿物学研究,厘定了锂辉石伟晶岩和锂云母-锂电气石伟晶岩(含细晶岩)两种类型的富锂伟晶岩。研究结果显示,在锂辉石伟晶岩中主要的富锂矿物除了已知的锂辉石和锂云母,还发现了透锂长石,同时锂云母的边部出现的铯锂云母((Cs,K)Li_(2.Al[Si_(4)O_(10)]F_(2.,Cs/(Cs+K)原子比>0.5)中Cs_(2.O含量达16.9%,该矿物首次在喜马拉雅发现,推测是由锂云母与后期富Cs流体作用后形成。在锂云母-锂电气石细晶岩中主要的富锂矿物包括锂云母和锂电气石,锂云母中的Li_(2.O含量为0.9%~6.7%;锂电气石中Li_(2.O含量最高可达2.4%,且FeO、MgO和CaO含量较低(分别2.6%),接近锂电气石端元成分。结合吉隆扎龙沟含锂伟晶岩中大量产出铯沸石和细晶石,确认这些伟晶岩是典型的LCT(Li-Cs-Ta)型伟晶岩,矿物组成和成分显示它们具有极高的分异演化程度。

关键词：花岗质伟晶岩细晶岩富铯锂云母铯锂云母锂电气石

岩石组构、地应力与流体黏度对鄂尔多斯盆地长73.相页岩水力裂缝扩展的影响规律

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Journal of Central South University 2024年第5期31卷 1646-1658页

作者：郭鹏李晓李守定赫建明毛天桥郑博 Institute of Energy School of Earth and Space SciencesPeking UniversityBeijing 100871China Key Laboratory of Shale Gas and Geoengineering Institute of Geology and GeophysicsChinese Academy of SciencesBeijing 100029China

页岩油是原油增储上产的重要领域。由于储层结构致密、超低渗透,页岩油工业开发需要对储层进行大规模压裂改造。与海相页岩储层相比,鄂尔多斯盆地长7_(3.陆相页岩油储层矿物成分与岩石组构差异较大,力学非均质性较强。陆相页岩油靶层选... 详细信息

页岩油是原油增储上产的重要领域。由于储层结构致密、超低渗透,页岩油工业开发需要对储层进行大规模压裂改造。与海相页岩储层相比,鄂尔多斯盆地长7_(3.陆相页岩油储层矿物成分与岩石组构差异较大,力学非均质性较强。陆相页岩油靶层选取和高效压裂改造需要明确页岩力学行为和水力裂缝扩展规律。对长7_(3.陆相页岩进行了原位X-ray CT力学试验和三轴水力压裂试验。分析了岩石组构、地应力差和流体黏度对水力裂缝垂向扩展的影响规律。结果表明,岩石组构对陆相页岩的力学行为和破坏过程有显著影响。陆相页岩水力裂缝的垂向扩展受垂向应力差和流体黏度的共同控制。当垂向应力差较小时,黑色页岩中原生弱面显著抑制了水力裂缝的垂向扩展。随着垂向应力差的增大,黑色页岩裂缝体积呈线性增加趋势,而纹层型页岩裂缝体积呈先增大后减小趋势。增大压裂液黏度可减弱层面的阻碍作用,促进水力裂缝垂向扩展。

关键词：陆相页岩力学行为水力裂缝岩石组构地应力流体黏度

The Jiao Tong University Spectroscopic Telescope Project

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Astronomical Techniques and Instruments 2024年第1期1卷 16-30页

作者： JUST Team Chengze Liu Ying Zu Fabo Feng Zhaoyu Li Yu Yu hua Bai Xiangqun Cui Bozhong Gu Yizhou Gu Jiaxin Han Yonghui Hou Zhongwen hu Hangxin Ji Yipeng Jing Wei Li Zhaoxiang Qi Xianyu Tan Cairang {3. Dehua Yang Xiangyan Yuan Chao Zhai Congcong Zhang Jun Zhang Haotong Zhang Pengjie Zhang Yong Zhang Yi Zhao Xianzhong Zheng Qingfeng Zhu Xiaohu Yang Tsung-Dao Lee Institute Shanghai Jiao Tong UniversityShanghai 200240China Department of Astronomy School of Physics and AstronomyShanghai Jiao Tong UniversityShanghai 200240China Nanjing Institute of Astronomical Optics&Technology Chinese Academy of SciencesNanjing 210042China University of Chinese Academy of sciences NanjingNanjing 211135China University of Chinese Academy of sciences Beijing 101408China Lenghu Technology Innovation Industrial Park Management Committee Lenghu 817400China Shanghai Astronomical Observatory Chinese Academy of SciencesShanghai 200030China Department of Astronomy University of Science and Technology of ChinaHefei 230026China National Astronomical Observatories Chinese Academy of SciencesBeijing 100101China Purple Mountain Observatory Chinese Academy of SciencesNanjing 210023China

The Jiao Tong University Spectroscopic Telescope(JUST)is a 4.4-meter f/6.0 segmented-mirror telescope dedicated to spectroscopic *** JUST primary mirror is composed of 18 hexagonal segments,each with a diameter of 1.1 *** provides two Nasmyth platforms for placing science *** Nasmyth focus fits a field of view of 10′and the other has an extended field of view of 1.2.with correction optics.A tertiary mirror is used to switch between the two Nasmyth *** will be installed at a site at Lenghu in Qinghai Province,china,and will conduct spectroscopic observations with three types of instruments to explore the dark universe,trace the dynamic universe,and search for exoplanets:(1)a multi-fiber(2.00 fibers)medium-resolution spectrometer(R=4000-5000)to spectroscopically map galaxies and large-scale structure;(2.an integral field unit(IFU)array of 500 optical fibers and/or a long-slit spectrograph dedicated to fast follow-ups of transient sources for multi-messenger astronomy;(3.a high-resolution spectrometer(R~100000)designed to identify Jupiter analogs and {2.-like planets,with the capability to characterize the atmospheres of hot exoplanets.

关键词： Astronomical instrumentation Optical telescopes Large-scale structure of the universe Redshift surveys Time domain astronomy Exoplanet astronomy

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土壤As含量光谱指数反演方法评估

光谱学与光谱分析 2024年第5期44卷 1472-1481页

作者：宁京邹滨涂宇龙张霞王玉龙田容才中南大学地球科学与信息物理学院湖南长沙410083 中南大学有色金属成矿预测与地质环境监测教育部重点实验室湖南长沙410083 中国科学院遥感与数字地球研究所北京100101

为探究基于光谱指数反演土壤砷(As)含量的有效性和适用性,选取河北省保定市某农田为研究区,利用PSR-3.00便携式地物光谱仪和电感耦合等离子发射光谱法测定42.土壤样品实验室及野外原位光谱信号和As含量;基于实验室光谱、野外原位光谱... 详细信息

为探究基于光谱指数反演土壤砷(As)含量的有效性和适用性,选取河北省保定市某农田为研究区,利用PSR-3.00便携式地物光谱仪和电感耦合等离子发射光谱法测定42.土壤样品实验室及野外原位光谱信号和As含量;基于实验室光谱、野外原位光谱及野外原位-直接标准化校正(DS)光谱,计算叶绿素指数(CI)、差值指数(DI)、和值指数(SI)、比值指数(RI)和简化归一化指数(NDI和NPDI),采用相关性分析提取强相关光谱指数参与土壤As含量随机森林回归建模。在此基础上,通过与相同光谱环境全波段建模方法的精度对比评估光谱指数的有效性;对比不同光谱环境中各类光谱指数建模精度的稳定性以评估其适用性;结合典型土壤组分的吸收特征波段尝试解析光谱指数提升土壤As含量反演性能的内在机制。结果表明:(1)相较于全波段建模,光谱指数法在“实验室光谱、野外原位光谱、野外原位-DS光谱”三种光谱环境中均能有效提升土壤As含量反演建模精度,R_(p)^(2.和RPD分别从0.2.3.1.2.升至0.73.和2.009、0.2.4和1.2.3.升至0.669和1.809、0.3.4和1.2.9提升至0.678和1.841;(2.三种光谱环境中,DI、RI、NDI在野外原位光谱、SI和NPDI在野外原位-DS光谱环境中的适用性较差,CI综合适用性最强,R_(p)^(2.>0.66,RPD>1.8;(3.指数特征波段表现出与铁氧化物、粘土矿物和有机物吸收特征的相关性,但部分指数特征波段缺乏可解释性,无法揭示指数计算通过组合波段放大有效信息和消除噪声的统一规律。该研究可为后续发展基于光谱指数的土壤重金属遥感反演应用甚至卫星有效载荷研制中的波段设计提供科学依据。

关键词：土壤重金属光谱指数高光谱随机森林遥感反演

Probing the solar transition region： current status and future perspectives

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Research in Astronomy and Astrophysics 2017年第11期17卷 1-18页

作者： hui tian school of earth and Space {2. Peking University Beijing 100871 China

The solar transition region （TR） is the temperature regime from roughly 0.02.MK to 0.8 MK in the solar atmosphere. It is the transition layer from the collisional and partially ionized chromosphere to the collisionless and fully ionized corona. The TR plays an important role in the mass and energy transport in both the quiet solar atmosphere and solar eruptions. Most of the TR emission lines fall into the spectral range of far ultraviolet and extreme ultraviolet （~400/^-1600/~）. Imaging and spec- troscopic observations in this spectral range are the most important ways to obtain information about the physics of the TR. Static solar atmosphere models predict a very thin TR. However, recent high- resolution observations indicate that the TR is highly dynamic and inhomogeneous. I will summarize some major findings about the TR made through imaging and spectroscopic observations in the past 2. years. These existing observations have demonstrated that the TR may be the key to understanding coronal heating and origin of the solar wind. Future exploration of the solar TR may need to focus on the upper TR, since the plasma in this temperature regime （0.1 MK-0.8 MK） has not been routinely imaged before. High-resolution imaging and spectroscopic observations of the upper TR will not only allow us to track the mass and energy from the lower atmosphere to the corona, but also help us to understand the initiation and heating mechanisms of coronal mass ejections and solar flares.

关键词： Sun: transition region -- Sun: corona -- Sun: flares -- Sun: coronal mass ejections --instrumentation: spectrographs