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欧盟：让环境数据为欧洲绿色转型服务 快报文章
地球科学快报，2025年第15期
作者:  张文亮
Microsoft Word(19Kb)  |  收藏  |  浏览/下载：588/0  |  提交时间：2025/08/11
The Green Deal Data Space  Data harmonisation  Semantic Interoperability  Metadata  Data Exchange  Governance  
全球湿地复湿可有效减少温室气体排放 快报文章
气候变化快报，2022年第16期
作者:  陈竹君 刘莉娜
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Rewetting wetland  CO2  Water table  GHG exchange  
地核和地幔之间的原始3He交换 快报文章
地球科学快报，2022年第07期
作者:  王晓晨
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Earth's Core  Earth's Mantle  Helium-3 Exchange  
WMO批准通过加强国际旨在强化全球观测与地球系统数据交换的行动的重大举措 快报文章
地球科学快报，2021年第21期
作者:  刘燕飞
Microsoft Word(14Kb)  |  收藏  |  浏览/下载：813/0  |  提交时间：2021/11/10
Keywords: Earth System  Data exchange  Global Basic Observing Network  
Exchange Dynamics of Typical Emerging and Legacy Persistent Organic Pollutants at the Air-Water Interface Over a Strongly Human-Influenced Large River Estuary 期刊论文
JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES, 2020, 125 (13)
作者:  Guo, Tianfeng;  Li, Yuanyuan;  Lin, Tian;  Wu, Zilan;  Jiang, Yuqing;  Guo, Zhigang
收藏  |  浏览/下载：36/0  |  提交时间：2020/08/18
BDE-209  PCB  air-water gas exchange  transport pathway  source-sink fate  
Unequal raw material exchange between and within countries: Galicia (NW Spain) as a core-periphery economy 期刊论文
ECOLOGICAL ECONOMICS, 2020, 172
作者:  Pinero, Pablo;  Perez-Neira, David;  Infante-Amate, Juan;  Chas-Amil, Maria L.;  Doldan-Garcia, Xoan R.
收藏  |  浏览/下载：53/0  |  提交时间：2020/07/02
Unequal exchange  Material footprint  Material flow accounting  Value added  World system theory  Multi-Regional Input-Output  
Ecological macroeconomics in the open economy: Sustainability, unequal exchange and policy coordination in a center-periphery model 期刊论文
ECOLOGICAL ECONOMICS, 2020, 172
作者:  Althouse, Jeffrey;  Guarini, Giulio;  Gabriel Porcile, Jose
收藏  |  浏览/下载：46/0  |  提交时间：2020/07/02
Ecological macroeconomics  Green growth  Ecologically unequal exchange  Balance of payments constraint  Environmental policy coordination  Center-periphery model  
Global reconstruction reduces the uncertainty of oceanic nitrous oxide emissions and reveals a vigorous seasonal cycle 期刊论文
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 2020, 117 (22) : 11954-11960
作者:  Yang, Simon;  Chang, Bonnie X.;  Warner, Mark J.;  Weber, Thomas S.;  Bourbonnais, Annie M.;  Santoro, Alyson E.;  Kock, Annette;  Sonnerup, Rolf E.;  Bullister, John L.;  Wilson, Samuel T.;  Bianchi, Daniele
收藏  |  浏览/下载：55/0  |  提交时间：2020/05/20
nitrous oxide  air-sea gas exchange  seasonal variability  nitrogen cycle  greenhouse gases  
FACT caught in the act of manipulating the nucleosome 期刊论文
NATURE, 2020, 577 (7790) : 426-+
作者:  Shen, Helen
收藏  |  浏览/下载：24/0  |  提交时间：2020/07/03

The organization of genomic DNA into nucleosomes profoundly affects all DNA-related processes in eukaryotes. The histone chaperone known as '  facilitates chromatin transcription'  (FACT(1)) (consisting of subunits SPT16 and SSRP1) promotes both disassembly and reassembly of nucleosomes during gene transcription, DNA replication and DNA repair(2). However, the mechanism by which FACT causes these opposing outcomes is unknown. Here we report two cryo-electron-microscopic structures of human FACT in complex with partially assembled subnucleosomes, with supporting biochemical and hydrogen-deuterium exchange data. We find that FACT is engaged in extensive interactions with nucleosomal DNA and all histone variants. The large DNA-binding surface on FACT appears to be protected by the carboxy-terminal domains of both of its subunits, and this inhibition is released by interaction with H2A-H2B, allowing FACT-H2A-H2B to dock onto a complex containing DNA and histones H3 and H4 (ref. (3)). SPT16 binds nucleosomal DNA and tethers H2A-H2B through its carboxy-terminal domain by acting as a placeholder for DNA. SSRP1 also contributes to DNA binding, and can assume two conformations, depending on whether a second H2A-H2B dimer is present. Our data suggest a compelling mechanism for how FACT maintains chromatin integrity during polymerase passage, by facilitating removal of the H2A-H2B dimer, stabilizing intermediate subnucleosomal states and promoting nucleosome reassembly. Our findings reconcile discrepancies regarding the many roles of FACT and underscore the dynamic interactions between histone chaperones and nucleosomes.


  
Inverse Cascade Evidenced by Information Entropy of Passive Scalars in Submerged Canopy Flows 期刊论文
GEOPHYSICAL RESEARCH LETTERS, 2020, 47 (9)
作者:  Ghannam, Khaled;  Poggi, Davide;  Bou-Zeid, Elie;  Katul, Gabriel G.
收藏  |  浏览/下载：33/0  |  提交时间：2020/05/13
canopy turbulence  land-atmosphere exchange  scalar mixing  inverse cascade