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Recycling and metabolic flexibility dictate life in the lower oceanic crust 期刊论文
NATURE, 2020, 579 (7798) : 250-+
作者:  Zhou, Peng;  Yang, Xing-Lou;  Wang, Xian-Guang;  Hu, Ben;  Zhang, Lei;  Zhang, Wei;  Si, Hao-Rui;  Zhu, Yan;  Li, Bei;  Huang, Chao-Lin;  Chen, Hui-Dong;  Chen, Jing;  Luo, Yun;  Guo, Hua;  Jiang, Ren-Di;  Liu, Mei-Qin;  Chen, Ying;  Shen, Xu-Rui;  Wang, Xi;  Zheng, Xiao-Shuang;  Zhao, Kai;  Chen, Quan-Jiao;  Deng, Fei;  Liu, Lin-Lin;  Yan, Bing;  Zhan, Fa-Xian;  Wang, Yan-Yi;  Xiao, Geng-Fu;  Shi, Zheng-Li
收藏  |  浏览/下载：37/0  |  提交时间：2020/05/13

The lithified lower oceanic crust is one of Earth'  s last biological frontiers as it is difficult to access. It is challenging for microbiota that live in marine subsurface sediments or igneous basement to obtain sufficient carbon resources and energy to support growth(1-3) or to meet basal power requirements(4) during periods of resource scarcity. Here we show how limited and unpredictable sources of carbon and energy dictate survival strategies used by low-biomass microbial communities that live 10-750 m below the seafloor at Atlantis Bank, Indian Ocean, where Earth'  s lower crust is exposed at the seafloor. Assays of enzyme activities, lipid biomarkers, marker genes and microscopy indicate heterogeneously distributed and viable biomass with ultralow cell densities (fewer than 2,000 cells per cm(3)). Expression of genes involved in unexpected heterotrophic processes includes those with a role in the degradation of polyaromatic hydrocarbons, use of polyhydroxyalkanoates as carbon-storage molecules and recycling of amino acids to produce compounds that can participate in redox reactions and energy production. Our study provides insights into how microorganisms in the plutonic crust are able to survive within fractures or porous substrates by coupling sources of energy to organic and inorganic carbon resources that are probably delivered through the circulation of subseafloor fluids or seawater.


  
Energy Supplier 2.0: A conceptual business model for energy suppliers aggregating flexible distributed assets and policy issues raised 期刊论文
ENERGY POLICY, 2019, 135
作者:  Specht, Jan Martin;  Madlener, Reinhard
收藏  |  浏览/下载：13/0  |  提交时间：2020/02/17
Energy supplier 2.0  Utility of the future  Business model generation  Flexibility  Distributed energy  Energy supply contracting  Virtual power plant  
Compensating balancing demand by spatial load migration - The case of geographically distributed data centers 期刊论文
ENERGY POLICY, 2019, 132: 1130-1142
作者:  Thimmel, Markus;  Fridgen, Gilbert;  Keller, Robert;  Roevekamp, Patrick
收藏  |  浏览/下载：22/0  |  提交时间：2019/11/27
Distributed data centers  Spatial load migration  Balancing power compensation  Economic potential  Simulation-based case study  Demand response  
Citizen utilities: The emerging power paradigm 期刊论文
ENERGY POLICY, 2017, 105
作者:  Green, Jemma;  Newman, Peter
收藏  |  浏览/下载：0/0  |  提交时间：2019/04/09
Solar power  Battery storage  Distributed power  Grid  Citizen utilities  
A Total Cost of Ownership Model for Low Temperature PEM Fuel Cells in Combined Heat and Power and Backup Power Applications 科技报告
来源：US Department of Energy (DOE). 出版年： 2014
作者:  University of California, Berkeley;  Wei, Max;  Lipman, Timothy;  Mayyas, Ahmad;  Chien, Joshua;  Chan, Shuk Han;  Gosselin, David;  Breunig, Hanna;  Stadler, Michael;  McKone, Thomas;  Beattie, Paul;  Chong, Patricia;  Colella, Whitney;  James, Brian
收藏  |  浏览/下载：11/0  |  提交时间：2019/04/05
fuel cells  cogeneration  distributed generation  low temperature PEM  total cost of ownership  backup power