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Carbon isotope ratios of C_(4) plants in loess areas of North china

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Science china Earth Sciences 2006年第1期49卷 97-102页

作者： wang Guoan1,2.3, HAN Jiamao 2. zhou Liping3, XIONG Xiaogang4, TAN Ming2. WU Zhenhai5 & PENG Jun6 1. Department of Plant Nutrition, {2. Agricultural university, Beijing 100094, {2. 2. institute of Geology and geophysics, Chinese Academy of Sciences, Beijing 10002., {2. 3. College of Environmental Sciences, MOE Laboratory for Earth Surface Processes, Peking university, Beijing 100871, {2. 4. institute of Botany, Chinese Academy of Sciences, Beijing 100093, {2. 5. Northwest Sci-Tech university of Agriculture and Forestry, yangling 712.00, {2. 6. Network Center, {2. Agricultural university, Beijing 100094, {2. Department of Plant Nutrition China Agricultural University Beijing China institute of Geology and geophysics Chinese Academy of Sciences Beijing China College of Environmental Sciences MOE Laboratory for Earth Surface Processes Peking University Beijing China institute of Botany Chinese Academy of Sciences Beijing China Northwest Sci-Tech university of Agriculture and Forestry Yangling China Network Center China Agricultural University Beijing China

Carbon isotope ratios (δ^(13)C) of 89 C_4 plant samples were determined fromthe loess area in North china. δ^(13)C values vary between -10.5per thousand and -14.6per thousandwith a mean of -12.6per thousand. Along a precipitation gradient from the semi-moist area to thesemiarid area, then to the arid area, the δ^(13)C values of C_4 plants show a slight decreasingtrend. The δ^(13)C values of C_4 plants in the dry season are found lower than those in the wetseason. These trends are opposite to those observed for C_3 species.

关键词： C4 plants, carbon isotope ratios, loess area.

Mesozoic subduction-accretion zone in northeastern South china Sea inferred from geophysical interpretations

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Science china Earth Sciences 2006年第5期49卷 471-482页

作者： zhou Di1, wang Wanyin2. wang Jialin3, PANG Xiong4, CAI Dongsheng5 & SUN Zhen1 1. Key Laboratory of Marginal Sea Geology, South china Sea institute of Oceanology, Chinese Academy of Sciences, Guang- zhou 510301, china 2. College of Geological and Topographical Engineering, Chang’an university, Xi’an 710054, china 3. Key Laboratory of Marine Geology, Tongji university, Shanghai 2.0092. china 4. china National Offshore Oil Co. Limited – Shenzhen Branch, Shenzhen 518067, china 5. china National Offshore Oil Co. Limited – Research Center, Beijing 10002., china Key Laboratory of Marginal Sea Geology South China Sea Institute of Oceanology Chinese Academy of Sciences Guangzhou China College of Geological and Topographical Engineering Chang’an University Xi’an China Key Laboratory of Marine Geology Tongji University Shanghai China china National Offshore Oil Co. Limited — Shenzhen Branch Shenzhen China china National Offshore Oil Co. Limited — Research Center Beijing China

A segment of Mesozoic subduction-accretion zone was inferred across thenortheastern South china Sea at approximately NE450 orientation. Basic evidence includes thefollowing: A belt of peek gross horizontal Bouguer gravity gradient (PGHGBA) is comparable in sizeand intensity to that of the Manila subduction-accretion zone. A belt of high positive magneticanomalies appears to the north and sub-parallel to the PGHGBA, representing the volcanic arcassociated to the subduction zone. The PGHGBA crosses obliquely both Cenozoic structures and presentseafloor topography, indicating a pre-Cenozoic age. The segment is offset left-laterally byNW-running strike-slip faults, in concord with the Mesozoic stress field of South china. Inaddition, the existence of the subduction zone is supported by wide-angle seismic data obtained indifferent years by different institutions. At approximate localities, a north-dipping ramp of Mohosurface is indicated by records of ocean-bottom seismometers, and a strong reflector about 8 kmbeneath the Moho reflector is indicated by both OBS and long-cable seismic records. Theidentification of a segment of Mesozoic subduction zone in NE South china Sea fills nicely the gapof the Great Late Mesozoic Circum SE Asia Subduction-acrretion Zone, which extended from Sumatra,Java, SE Kalimantan to N Palawan, and from Taiwan, Ryukyu to SW Japan.

关键词： Mesozoic, subduction zone, SE Asia, NE South china Sea, geophysics.

Evaluation of groundwater quality in the Xinjiang Plain Area

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Evaluation of groundwater quality in the Xinjiang Plain Area

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

中国科学院地质与地球物理研究所第十届(2.10年度)学术年会

作者： Jinlong zhou~(1,2.3),Xinguang DONG~2.Guomin LI~1,Yiping wang~2.Xiaojing GUO~3 1 {2. of Geology and geophysics,Chinese Academy of Sciences,Beijing 10002.,china 2.College of Water Conservancy and Civil Engineering,Xinjiang Agricultural university,Urumqi 830052.china 3 School of Environmental Science,china university of geosciences,Wuhan 430074,china

Groundwater is the main source of drinking water for the urban and rural residents in the plain area of the Xinjiang Uygur Autonomous Region,*** quality of groundwater has a direct relationship with human ***,386 groundwater samples collected from April to August in 2.03 were analyzed The samples were collected in basic evaluation units which are determined on the basis of *** dissolved solids,total hardness,pH ***-N,CHOH, Chemiluminescence detection of permanganate index (COD)and intestinal germ group were evaluated according to the guidelines of Groundwater Quality Standard(GB/T14848-93).The quality of the groundwater in each evaluation unit was classified by using the One Veto Method(a unified approach stipulated by the Ministry of Water Resources).The results indicate that the groundwater in the mainstream area of the Tarim Basin and the Yerqiang River Sub-basin belongs to Category V;the groundwater in the Wulungu River Sub-basin,the Kaidu-Kongque River Sub-basin,the Kashgar River Sub-basin, the Cherchen River Sub-basin and the Hotan River Subbasin belongs to CategoryⅣ;the groundwater in the Aibi Lake System belongs to CategoryⅡ,and the groundwater of other evaluation units belongs to CategoryⅢ.The causes of water quality formation were concisely analyzed. The results can be useful for the evaluation and management of water resources in the Xinjiang Plain Area.

关键词： groundwater quality evaluation one veto method total dissolved solids(TDS) pH total hardness

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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 Feifei Hu Jinling {2. 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. {2.s 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,37 families,and 18 orders)before 2.17,but only 32. 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,30.9%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

Muscarinic stimulation rescues β1-adrenergic response in transgenic mouse heart overexpressing β2.adrenoceptor

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郑州大学学报(医学版) 2000年第1期35卷 18-27页

作者： ZHANG Shengjun 1) ,CHENG Heping 1) ,zhou yingying 1) ,{2. Dingji 1) ,Bruce Ziman 1) ,Harold Spurgoen 1) , Robert J.Lefkowitz 2. ,Edward G.Lakatta 1) ,Walter J.Koch 3) ,XIAO Ruiping 1) 1)Laboratory of Cardiovascular Sciences,Gerontology Research Center,National institute on Aging,Baltimore,Maryland 2.2.4 2.Dept.of Medicine and Howard Hughes Medical institute,Duke university Medical Center,Durham,NC 3)Dept.of Surgeon,Duke university Medical Center,Durham,NC

Cardiac specific overexpression of human β 2.adrenergic receptor (β 2.AR) in transgenic mice (TG4) enhances the basal cardiac function due to a ligand independent,spontaneous β 2.AR ***,agonist mediated stimulation of either β 1 AR or β 2.AR fails to induce contractile response in this transgenic *** the unresponsiveness of β 2.AR has been attributed to an efficient coupling of the receptor to pertussis toxin (PTX) sensitive G proteins (G i),mechanisms underlying the loss of β 1 AR response is *** the present study,we demonstrated that,unlike β 2.AR,β 1 AR contractile response was not restored by PTX treatment,although G i protein abundance was significantly elevated in TG4 relative to non transgenic ***,the loss of β 1 AR function was not attributable to β adrenergic receptor kinase (βARK) mediated receptor desensitization,as evidenced by the unaltered βARK1 activity in TG4 *** contrast,preincubation of cells with a muscarinic receptor agonist,carbachol (CCh),or a β 2.AR inverse agonist,ICI 118,551 (ICI),largely restored the contractile response to β 1 AR stimulation by norepinephrine plus an α 1 adrenergic antagonist,*** cases were associated with a significant reduction in the baseline cAMP accumulation and contractility,and the rescued β 1 AR positive inotropic effect was completely reversed by a β 1 AR antagonist,CGP ***,we conclude that overexpression of β 2.AR in the moure heart causes a loss of β 1 AR contractile response,likely through a cAMP/protein kinase A(PKA) dependent heterologous receptor desensitization,independent of G i protein or β*** of the spontaneous β 2.AR activation by either muscarinic stimulation or the β 2.AR inverse agonist ICI can resensitize the β 1 AR contractile respinse in TG4 ventricular myocytes.

关键词： β-adrenergic receptor subtypes muscarinic receptor receptor desensitization β-adrenergic receptor kinases inhibitory G proteins cardiac myocytes

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淮北平原区氢氧同位素水文实验研究

水电能源科学 2009年第1期27卷 37-39,220页

作者：谭忠成陆宝宏孙营营汪集旸河海大学水文水资源学院江苏南京210098 中国科学院地质与地球物理研究所北京100029

运用氢氧稳定同位素18O2.H结合Ca2.及电导率等方法对淮北平原区五道沟径流试验场一次降雨径流过程进行了水文示踪实验研究,分别对降雨、地表水及地下水进行采样。通过现场测试与实验分析结果表明,次降雨过程中的1δ8O及δ2.的变幅较大... 详细信息

运用氢氧稳定同位素18O2.H结合Ca2.及电导率等方法对淮北平原区五道沟径流试验场一次降雨径流过程进行了水文示踪实验研究,分别对降雨、地表水及地下水进行采样。通过现场测试与实验分析结果表明,次降雨过程中的1δ8O及δ2.的变幅较大并随雨强的降低而增大;#1、#6井中地下水的1δ8O及δ2.变化不大,接受降雨补给量极小,与补给区水源的氢氧同位素组成有关,对本次降雨入渗补给的响应较慢,有明显的滞后效应;浅层#3井对本次降雨同位素信号的响应较快,井水中的钙离子含量也迅速升高,有来自土壤水的补给;IR自记井及S4井由于受抽水灌溉等人类活动的持续影响,δ18O(或2.H)明显偏负,有来自深层潜水的补给;流域出口断面河水的1δ8O(或2.H)变幅远小于本次降雨的δ18O(或2.H)变幅,与降雨量及平原流域较强的均化作用有关。

关键词：氢氧同位素降雨径流钙离子电导率

DRAV model and its application in assessing groundwater vulnerability in arid area:a case study of pore phreatic water in Tarim Basin,Xinjiang,Northwest china

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DRAV model and its application in assessing groundwater vuln...

中国科学院地质与地球物理研究所第十届(2.10年度)学术年会

作者： Jinlong zhou·Guomin Li·Feng Liu·Yiping wang·Xiaojing Guo {2. of Geology and geophysics, Chinese Academy of Sciences,10002. Beijing,china College of Water Conservancy and Civil Engineering, Xinjiang Agricultural university,830052.Urumqi,china School of Environmental Science,china university of geosciences,430074 Wuhan,china

According to the characteristics of groundwater in arid area,this paper proposes DRAV model for groundwater vulnerability assessment,where D is groundwater depth,R is the net recharge of aquifer,A is the aquifer characteristics,and V is the lithology of vadose *** a case study,the paper assesses the vulnerability of pore phreatic water in Tarim Basin of Xinjiang,china by using the DRAV *** results indicate that the areas of phreatic water with vulnerability index ranges of 2.4,4-6,6-8 and>8 accounting for 10.1,80.4,9.2.and 0.2.of the total plain area of the Tarim Basin respectively, and the areas with the latter two vulnerability ranges (6-8 and>8)are mainly located in the irrigation districts with thin soil layer(2.-30 cm thick surface soil of vadose zone,mainly with underlying sandy gravel)and with silty and fine sand *** vadose zone generally lacks sandy loam and clayey soil and has larger recharge by infiltration of irrigation water.

关键词： Groundwater Vulnerability DRAV model Tarim Basin

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基于纵横波解耦的三维弹性波逆时偏移

地球物理学报 2018年第3期61卷 1038-1052页

作者：周熙焱常旭王一博姚振兴中国科学院地质与地球物理研究所中国科学院页岩气与地质工程重点实验室北京100029 中国科学院地球科学研究院北京100029 中国科学院大学北京100049 中国科学院地质与地球物理研究所地球与行星物理重点实验室北京100029

纵横波波场分离是弹性波偏移方法的必要条件,通过纵横波成像的差异可以获取更多地下介质的信息.目前所用的纵横波波场分离方法多采用Helmholtz分解,这样得到的波场不仅物理意义发生了变化,振幅和相位也会发生改变.本文采用纵横波解耦的... 详细信息

纵横波波场分离是弹性波偏移方法的必要条件,通过纵横波成像的差异可以获取更多地下介质的信息.目前所用的纵横波波场分离方法多采用Helmholtz分解,这样得到的波场不仅物理意义发生了变化,振幅和相位也会发生改变.本文采用纵横波解耦的弹性波方程,将其应用于三维介质,对比分析了纵横波解耦方法相对传统Helmholtz分解方法在相位、振幅上的优势.将该解耦的波场分离方法应用于弹性波逆时偏移,能得到相位、振幅和物理意义不受改变的偏移结果.但是该解耦方法分离得到的纵横波波场均为矢量场,将该波场分离方法用于弹性波逆时偏移,还需要解决矢量场如何得到标量成像结果的问题.本文引入了Poynting矢量,通过Poynting矢量对矢量波场进行标量化,这样就能得到保振幅、相位,且无极性反转的标量PP和PS成像结果.同时针对S波Poynting矢量求取不准确的问题,采用拟S波应力场和S波速度场得到了更加准确的S波Poynting矢量.理论计算证明了本文采用的3D波场解耦的矢量波场分离方法的正确性和引入Poynting矢量对矢量波场进行标量成像的有效性.

关键词：纵横波解耦矢量波场分离 3D Poynting矢量标量成像条件

High-performance Li-S battery cathode with catalyst-like carbon nanotube-MoP promoting polysulfide redox

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Nano Research 2017年第11期10卷 3698-3705页

作者： yingying Mi Wen Liu Xiaolin Li Julia Zhuang Henghui zhou Hailiang {2. Department of Chemistry and Energy Sciences institute Yale University West Haven CT 06516 USA College of Chemistry and Molecular Engineering Peking University Beijing 100871 China College of Chemistry and Chemical Engineering Chongqing University Chongqing 400044 China Department of Chemical and Environmental Engineering Yale University New Haven CT 06520 USA

Despite promising characteristics such as high specific energy and low cost,current Li-S batteries fall short in cycle *** the cycling stability of S cathodes requires immobilizing the lithium polysulfide （LPS） intermediates as well as accelerating their redox *** many materials have been explored for trapping LPS,the ability to promote LPS redox has attracted much less ***,we report for the first time on transition metal phosphides as effective host materials to enhance both LPS adsorption and *** MoP-nanoparticle-decorated carbon nanotubes with S deposited on graphene oxide,we enable Li-S battery cathodes with substantially improved cycling stability and rate *** decay rates as low as 0.017% per cycle over 1,000 cycles can be *** and high areal capacity （〉 3 mAh＆#183;cm-2. can be achieved under high mass loading *** electrochemical performance can also be achieved with analogous material structures based on CoP,demonstrating the potential of metal phosphides for long-cycle Li-S batteries.

关键词： lithium-sulfur battery metal phosphide lithium polysulfide long cycle