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The impact of global dimming on crop yields is determined by the source–sink imbalance of carbon during grain filling 期刊论文
Global Change Biology, 2020
作者:  Liping Shao;  Zijuan Liu;  Haozheng Li;  Yaling Zhang;  Mingming Dong;  Xuanhe Guo;  Han Zhang;  Baowei Huang;  Rongbing Ni;  Gang Li;  Chuang Cai;  Weiping Chen;  Weihong Luo;  Xinyou Yin
收藏  |  浏览/下载:6/0  |  提交时间:2020/12/07
Boiled or Bottled: Regional and Seasonal Exposures to Drinking Water Contamination and Household Air Pollution in Rural China 期刊论文
Environmental Health Perspectives, 2020
作者:  Alasdair Cohen;  Ajay Pillarisetti;  Qing Luo;  Qi Zhang;  Hongxing Li;  Gemei Zhong;  Gang Zhu;  John M. ColfordJr.;  Kirk R. Smith;  Isha Ray;  Yong Tao
收藏  |  浏览/下载:8/0  |  提交时间:2020/12/07
Identification of Integrator-PP2A complex (INTAC), an RNA polymerase II phosphatase 期刊论文
Science, 2020
作者:  Hai Zheng;  Yilun Qi;  Shibin Hu;  Xuan Cao;  Congling Xu;  Zhinang Yin;  Xizi Chen;  Yan Li;  Weida Liu;  Jie Li;  Jiawei Wang;  Gang Wei;  Kaiwei Liang;  Fei Xavier Chen;  Yanhui Xu
收藏  |  浏览/下载:11/0  |  提交时间:2020/11/30
Self-consistent kinetic model of nested electron- and ion-scale magnetic cavities in space plasmas 期刊论文
Nature Communications, 2020
作者:  Jing-Huan Li;  Fan Yang;  Xu-Zhi Zhou;  Qiu-Gang Zong;  Anton V. Artemyev;  Robert Rankin;  Quanqi Shi;  Shutao Yao;  Han Liu;  Jiansen He;  Zuyin Pu;  Chijie Xiao;  Ji Liu;  Craig Pollock;  Guan Le;  James L. Burch
收藏  |  浏览/下载:14/0  |  提交时间:2020/11/09
Global variability in seawater Mg:Ca and Sr:Ca ratios in the modern ocean 期刊论文
Proceedings of the National Academy of Sciences, 2020
作者:  Mario Lebrato;  Dieter Garbe-Schönberg;  Marius N. Müller;  Sonia Blanco-Ameijeiras;  Richard A. Feely;  Laura Lorenzoni;  Juan-Carlos Molinero;  Karen Bremer;  Daniel O. B. Jones;  Debora Iglesias-Rodriguez;  Dana Greeley;  Miles D. Lamare;  Aurelien Paulmier;  Michelle Graco;  Joan Cartes;  Joana Barcelos e Ramos;  Ana de Lara;  Ricardo Sanchez-Leal;  Paz Jimenez;  Flavio E. Paparazzo;  Susan E. Hartman;  Ulrike Westernströer;  Marie Küter;  Roberto Benavides;  Armindo F. da Silva;  Steven Bell;  Chris Payne;  Solveig Olafsdottir;  Kelly Robinson;  Liisa M. Jantunen;  Alexander Korablev;  Richard J. Webster;  Elizabeth M. Jones;  Olivier Gilg;  Pascal Bailly du Bois;  Jacek Beldowski;  Carin Ashjian;  Nejib D. Yahia;  Benjamin Twining;  Xue-Gang Chen;  Li-Chun Tseng;  Jiang-Shiou Hwang;  Hans-Uwe Dahms;  Andreas Oschlies
收藏  |  浏览/下载:12/0  |  提交时间:2020/09/08
Economics in the Age of COVID-19 期刊论文
NATURE, 2020, 581 (7809) : 375-377
作者:  Yin, Juan;  Li, Yu-Huai;  Liao, Sheng-Kai;  Yang, Meng;  Cao, Yuan;  Zhang, Liang;  Ren, Ji-Gang;  Cai, Wen-Qi;  Liu, Wei-Yue;  Li, Shuang-Lin;  Shu, Rong;  Huang, Yong-Mei;  Deng, Lei;  Li, Li;  Zhang, Qiang;  Liu, Nai-Le
收藏  |  浏览/下载:25/0  |  提交时间:2020/07/03

Breakneck triage nails many diagnoses, but deeper treatment is needed.


Breakneck triage nails many diagnoses, but deeper treatment is needed.


  
Giant thermopower of ionic gelatin near room temperature 期刊论文
Science, 2020
作者:  Cheng-Gong Han;  Xin Qian;  Qikai Li;  Biao Deng;  Yongbin Zhu;  Zhijia Han;  Wenqing Zhang;  Weichao Wang;  Shien-Ping Feng;  Gang Chen;  Weishu Liu
收藏  |  浏览/下载:10/0  |  提交时间:2020/06/09
Millennial-scale hydroclimate control of tropical soil carbon storage 期刊论文
NATURE, 2020, 581 (7806) : 63-+
作者:  Lam, Tommy Tsan-Yuk;  Jia, Na;  Zhang, Ya-Wei;  Shum, Marcus Ho-Hin;  Jiang, Jia-Fu;  Zhu, Hua-Chen;  Tong, Yi-Gang;  Shi, Yong-Xia;  Ni, Xue-Bing;  Liao, Yun-Shi;  Li, Wen-Juan;  Jiang, Bao-Gui;  Wei, Wei;  Yuan, Ting-Ting;  Zheng, Kui;  Cui, Xiao-Ming;  Li, Jie;  Pei, Guang-Qian
收藏  |  浏览/下载:25/0  |  提交时间:2020/05/13

Over the past 18,000 years, the residence time and amount of soil carbon stored in the Ganges-Brahmaputra basin have been controlled by the intensity of Indian Summer Monsoon rainfall, with greater carbon destabilization during wetter, warmer conditions.


The storage of organic carbon in the terrestrial biosphere directly affects atmospheric concentrations of carbon dioxide over a wide range of timescales. Within the terrestrial biosphere, the magnitude of carbon storage can vary in response to environmental perturbations such as changing temperature or hydroclimate(1), potentially generating feedback on the atmospheric inventory of carbon dioxide. Although temperature controls the storage of soil organic carbon at mid and high latitudes(2,3), hydroclimate may be the dominant driver of soil carbon persistence in the tropics(4,5)  however, the sensitivity of tropical soil carbon turnover to large-scale hydroclimate variability remains poorly understood. Here we show that changes in Indian Summer Monsoon rainfall have controlled the residence time of soil carbon in the Ganges-Brahmaputra basin over the past 18,000 years. Comparison of radiocarbon ages of bulk organic carbon and terrestrial higher-plant biomarkers with co-located palaeohydrological records(6) reveals a negative relationship between monsoon rainfall and soil organic carbon stocks on a millennial timescale. Across the deglaciation period, a depletion of basin-wide soil carbon stocks was triggered by increasing rainfall and associated enhanced soil respiration rates. Our results suggest that future hydroclimate changes in tropical regions are likely to accelerate soil carbon destabilization, further increasing atmospheric carbon dioxide concentrations.


  
Monumental architecture at Aguada Fenix and the rise of Maya civilization 期刊论文
NATURE, 2020
作者:  Bedding, Timothy R.;  Murphy, Simon J.;  Hey, Daniel R.;  Huber, Daniel;  Li, Tanda;  Smalley, Barry;  Stello, Dennis;  White, Timothy R.;  Ball, Warrick H.;  Chaplin, William J.;  Colman, Isabel L.;  Fuller, Jim;  Gaidos, Eric;  Harbeck, Daniel R.;  Hermes, J. J.;  Holdsworth, Daniel L.;  Li, Gang;  Li, Yaguang;  Mann, Andrew W.;  Reese, Daniel R.;  Sekaran, Sanjay;  Yu, Jie;  Antoci, Victoria;  Bergmann, Christoph;  Brown, Timothy M.;  Howard, Andrew W.;  Ireland, Michael J.;  Isaacson, Howard;  Jenkins, Jon M.;  Kjeldsen, Hans;  McCully, Curtis;  Rabus, Markus;  Rains, Adam D.;  Ricker, George R.;  Tinney, Christopher G.;  Vanderspek, Roland K.
收藏  |  浏览/下载:30/0  |  提交时间:2020/07/03

Archaeologists have traditionally thought that the development of Maya civilization was gradual, assuming that small villages began to emerge during the Middle Preclassic period (1000-350 bc  dates are calibrated throughout) along with the use of ceramics and the adoption of sedentism(1). Recent finds of early ceremonial complexes are beginning to challenge this model. Here we describe an airborne lidar survey and excavations of the previously unknown site of Aguada Fenix (Tabasco, Mexico) with an artificial plateau, which measures 1,400 m in length and 10 to 15 m in height and has 9 causeways radiating out from it. We dated this construction to between 1000 and 800 bc using a Bayesian analysis of radiocarbon dates. To our knowledge, this is the oldest monumental construction ever found in the Maya area and the largest in the entire pre-Hispanic history of the region. Although the site exhibits some similarities to the earlier Olmec centre of San Lorenzo, the community of Aguada Fenix probably did not have marked social inequality comparable to that of San Lorenzo. Aguada Fenix and other ceremonial complexes of the same period suggest the importance of communal work in the initial development of Maya civilization.


Lidar survey of the Maya lowlands uncovers the monumental site of Aguada Fenix, which dates to around 1000-800 bc and points to the role of communal construction in the development of Maya civilization.


  
Engineering covalently bonded 2D layered materials by self-intercalation 期刊论文
NATURE, 2020, 581 (7807) : 171-+
作者:  Shang, Jian;  Ye, Gang;  Shi, Ke;  Wan, Yushun;  Luo, Chuming;  Aihara, Hideki;  Geng, Qibin;  Auerbach, Ashley;  Li, Fang
收藏  |  浏览/下载:11/0  |  提交时间:2020/07/03

Two-dimensional (2D) materials(1-5) offer a unique platform from which to explore the physics of topology and many-body phenomena. New properties can be generated by filling the van der Waals gap of 2D materials with intercalants(6,7)  however, post-growth intercalation has usually been limited to alkali metals(8-10). Here we show that the self-intercalation of native atoms(11,12) into bilayer transition metal dichalcogenides during growth generates a class of ultrathin, covalently bonded materials, which we name ic-2D. The stoichiometry of these materials is defined by periodic occupancy patterns of the octahedral vacancy sites in the van der Waals gap, and their properties can be tuned by varying the coverage and the spatial arrangement of the filled sites(7,13). By performing growth under high metal chemical potential(14,15) we can access a range of tantalum-intercalated TaS(Se)(y), including 25% Ta-intercalated Ta9S16, 33.3% Ta-intercalated Ta7S12, 50% Ta-intercalated Ta10S16, 66.7% Ta-intercalated Ta8Se12 (which forms a Kagome lattice) and 100% Ta-intercalated Ta9Se12. Ferromagnetic order was detected in some of these intercalated phases. We also demonstrate that self-intercalated V11S16, In11Se16 and FexTey can be grown under metal-rich conditions. Our work establishes self-intercalation as an approach through which to grow a new class of 2D materials with stoichiometry- or composition-dependent properties.