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[Report] A virus that infects a hyperthermophile encapsidates A-form DNA

22-May-2015 | Frank DiMaio; Xiong Yu; Elena Rensen; Mart Krupovic; David Prangishvili; Edward H. Egelman, Science , 2015

Extremophiles, microorganisms thriving in extreme environmental conditions, must have proteins and nucleic acids that are stable at extremes of temperature and pH. The nonenveloped, rod-shaped virus SIRV2 (Sulfolobus islandicus rod-shaped virus 2) infects the hyperthermophilic acidophile ...


Energies, Vol. 8, Pages 4455-4475: Adaptive Micro-Grid Operation Based on IEC 61850

18-May-2015 | Deng, Wei ; Pei, Wei ; Shen, Ziqi ; Zhao, Zhenxing ; Qu, Hui, Energies, 2015

Automatically identifying the new equipment after its integration and adjusting operation strategy to realize “plug and play” functionality are becoming essential for micro-grid operations. In order to improve and perfect the micro-grid “plug and play” function with the increased amount of ...


Solution structure of the PsIAA4 oligomerization domain reveals interaction modes for transcription factors in early auxin response [Plant Biology]

12-May-2015 | Dhurvas Chandrasekaran Dinesh; Michael Kovermann; Mohanraj Gopalswamy; Antje Hellmuth; Luz Irina A. Calderón Villalo ..., Proceedings of the National Academy of Sciences current issue, 2015

The plant hormone auxin activates primary response genes by facilitating proteolytic removal of AUXIN/INDOLE-3-ACETIC ACID (AUX/IAA)-inducible repressors, which directly bind to transcriptional AUXIN RESPONSE FACTORS (ARF). Most AUX/IAA and ARF proteins share highly conserved C-termini mediating ...


Energies, Vol. 8, Pages 4188-4215: The Concept of EV’s Intelligent Integrated Station and Its Energy Flow

11-May-2015 | Xie, Da ; Chu, Haoxiang ; Lu, Yupu ; Gu, Chenghong ; Li, Furong ; Zhang, Yu, Energies, 2015

The increasing number of electric vehicles (EVs) connected to existing distribution networks as time-variant loads cause significant distortions in line current and voltage. A novel EV’s intelligent integrated station (IIS) making full use of retired batteries is introduced in this paper to ...


Energies, Vol. 8, Pages 4237-4252: Enhanced Hydrogen Generation Properties of MgH2-Based Hydrides by Breaking the Magnesium Hydroxide Passivation Layer

11-May-2015 | Ouyang, Liuzhang ; Ma, Miaolian ; Huang, Minghong ; Duan, Ruoming ; Wang, Hui ; Sun, Lixian ; Zhu, Min, Energies, 2015

Due to its relatively low cost, high hydrogen yield, and environmentally friendly hydrolysis byproducts, magnesium hydride (MgH2) appears to be an attractive candidate for hydrogen generation. However, the hydrolysis reaction of MgH2 is rapidly inhibited by the formation of a magnesium hydroxide ...


[Perspective] Committing to ecological restoration

08-May-2015 | Katharine Suding; Eric Higgs; Margaret Palmer; J. Baird Callicott; Christopher B. Anderson; Matthew Baker; John J. G ..., Science , 2015

At the September 2014 United Nations Climate Summit, governments rallied around an international agreement—the New York Declaration on Forests—that underscored restoration of degraded ecosystems as an auspicious solution to climate change. Ethiopia committed to restore more than one-sixth of its ...


Energies, Vol. 8, Pages 4118-4137: A Numerical Study on Combustion and Emission Characteristics of a Medium-Speed Diesel Engine Using In-Cylinder Cleaning Technologies

08-May-2015 | He, Shuang ; Du, Bao-Guo ; Feng, Li-Yan ; Fu, Yao ; Cui, Jing-Chen ; Long, Wu-Qiang, Energies, 2015

In order to clarify the potential of internal purification methods on medium speed diesel engines to meet the IMO Tier III nitrogen oxide (NOx) emission regulations, combined 1-D engine working cycle simulation and 3-D CFD simulation were conducted to predict the performance and emissions of the ...


Impact of the Quality of Bowel Cleansing on the Efficacy of Colonic Cancer Screening: A Prospective, Randomized, Blinded Study

07-May-2015 | Jürgen Pohl et al., PLoS ONE, 2015

by Jürgen Pohl, Marc Halphen, Hans Rudolf Kloess, Wolfgang Fischbach Objectives Efficacy of two low volume bowel cleansing preparations, polyethylene glycol plus ascorbate (PEG+Asc) and sodium picosulfate/magnesium citrate (NaPic/MgCit), were compared for polyp and adenoma detection rate (PDR ...


Energies, Vol. 8, Pages 3867-3881: Simulation of a Standalone, Portable Steam Generator Driven by a Solar Concentrator

05-May-2015 | Sabry, Mohamed ; Nahas, Mouaaz ; Al-Lehyani, Saud H., Energies, 2015

Solar energy is a good solution for energy-deficiency problems, especially in regions such ‎as rural areas in the Middle East that have not been electrified yet or are ‎under electrification. In ‎this paper, with the aid of a Computational Fluid Dynamics simulation, we propose a ‎system that ...


Joint neutron crystallographic and NMR solution studies of Tyr residue ionization and hydrogen bonding: Implications for enzyme-mediated proton transfer [Biochemistry]

05-May-2015 | Ryszard Michalczyk; Clifford J. Unkefer; John-Paul Bacik; Tobias E. Schrader; Andreas Ostermann; Andrey Y. Kovalevsk ..., Proceedings of the National Academy of Sciences current issue, 2015

Human carbonic anhydrase II (HCA II) uses a Zn-bound OH−/H2O mechanism to catalyze the reversible hydration of CO2. This catalysis also involves a separate proton transfer step, mediated by an ordered solvent network coordinated by hydrophilic residues. One of these residues, Tyr7, was previously ...


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