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联合国推出首个利用人工智能核算自然资本的工具 快报文章
资源环境快报,2021年第9期
作者:  李恒吉
Microsoft Word(14Kb)  |  收藏  |  浏览/下载:421/1  |  提交时间:2021/05/18
UN  BC3  SEEA  
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:61/0  |  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.


  
First Nations sovereignty, Environmental Justice, and Degrowth in Northwest BC, Canada 期刊论文
ECOLOGICAL ECONOMICS, 2019, 162: 133-142
作者:  Frost, Karl
收藏  |  浏览/下载:9/0  |  提交时间:2019/11/27
First Nations  Sovereignty  Degrowth  Environmental Justice  BC  
Identification of absorbing aerosol types at a site in the northern edge of Indo-Gangetic Plain and a polluted valley in the foothills of the central Himalayas 期刊论文
ATMOSPHERIC RESEARCH, 2019, 223: 15-23
作者:  Rupakheti, Dipesh;  Kang, Shichang;  Rupakheti, Maheswar;  Cong, Zhiyuan;  Panday, Arnico K.;  Holben, Brent N.
收藏  |  浏览/下载:20/0  |  提交时间:2019/11/27
Aerosol types  Absorbing aerosols  Biomass burning  Urban industrial  Mostly BC  Central Himalayas  
Black carbon aerosol in India: A comprehensive review of current status and future prospects 期刊论文
ATMOSPHERIC RESEARCH, 2019, 218: 207-230
作者:  Rana, Archita;  Jia, Shiguo;  Sarkar, Sayantan
收藏  |  浏览/下载:19/0  |  提交时间:2019/04/09
Black carbon (BC)  Brown carbon (BrC)  Emission inventory  Radiative forcing  Source apportionment  India  
Influence of Emissions and Aqueous Processing on Particles Containing Black Carbon in a Polluted Urban Environment: Insights From a Soot Particle-Aerosol Mass Spectrometer 期刊论文
JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES, 2018, 123 (12) : 6648-6666
作者:  Collier, Sonya;  Williams, Leah R.;  Onasch, Timothy B.;  Cappa, Christopher D.;  Zhang, Xiaolu;  Russell, Lynn M.;  Chen, Chia-Li;  Sanchez, Kevin J.;  Worsnop, Douglas R.;  Zhang, Qi
收藏  |  浏览/下载:17/0  |  提交时间:2019/04/09
BC soot particles  SP-AMS  wood burning  PM composition  San Joaquin Valley (SJV)  fog processing  
A stand table projection system for interior Douglas-fir in British Columbia, Canada 期刊论文
FOREST ECOLOGY AND MANAGEMENT, 2018, 409: 434-443
作者:  Jang, Woongsoon;  Eskelson, Bianca N. I.;  Marshall, Peter L.;  Moss, Ian
收藏  |  浏览/下载:18/0  |  提交时间:2019/04/09
Growth and yield  Diameter distribution model  Seemingly unrelated regression  Diameter growth equation  Prognosis(BC)  
Estimates of spatially and temporally resolved constrained black carbon emission over the Indian region using a strategic integrated modelling approach 期刊论文
ATMOSPHERIC RESEARCH, 2017, 195: 43727
作者:  Verma, S.;  Reddy, D. Manigopal;  Ghosh, S.;  Kumar, D. Bharath;  Chowdhury, A. Kundu
收藏  |  浏览/下载:80/0  |  提交时间:2019/04/09
Black carbon  Emission inventory  Receptor modelling approach  Bottom-up and top-down emissions  Monthly BC emission flux  GCM simulation  z score distribution  
BC Transit Fuel Cell Bus Project: Evaluation Results Report 科技报告
来源:US Department of Energy (DOE). 出版年: 2014
作者:  Eudy, L.;  Post, M.
收藏  |  浏览/下载:2/0  |  提交时间:2019/04/05
FUEL CELL ELECTRIC BUS  FCEB  TRANSIT BUS  TECHNOLOGY VALIDATION  DEMONSTRATION  BC TRANSIT  HYDROGEN FUEL  Transportation  
100-BC-5 Operable Unit, Batch Leach Analyses and Report for Sediments at RI/FS Wells C7508, C7783, C7784, C7785, and C7787 科技报告
来源:US Department of Energy (DOE). 出版年: 2011
作者:  Kneafsey, T.J.;  Rees, E.V.L.;  Nakagawa, S.;  Kwon, T.-H.
收藏  |  浏览/下载:6/0  |  提交时间:2019/04/05
100 BC  Kd  sediment charaterization