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1.014 Aktuelle Fachpublikationen zum Thema temperature

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[Special Issue Research Article] Structure and function of the global ocean microbiome

22.05.2015 | Shinichi Sunagawa; Luis Pedro Coelho; Samuel Chaffron; Jens Roat Kultima; Karine Labadie; Guillem Salazar; Bardya Dj ..., Science , 2015

Microbes are dominant drivers of biogeochemical processes, yet drawing a global picture of functional diversity, microbial community structure, and their ecological determinants remains a grand challenge. We analyzed 7.2 terabases of metagenomic data from 243 Tara Oceans samples from 68 locations ...


[Report] The dominant role of semi-arid ecosystems in the trend and variability of the land CO2 sink

22.05.2015 | Anders Ahlström; Michael R. Raupach; Guy Schurgers; Benjamin Smith; Almut Arneth; Martin Jung; Markus Reichstein; Jo ..., Science , 2015

The growth rate of atmospheric carbon dioxide (CO2) concentrations since industrialization is characterized by large interannual variability, mostly resulting from variability in CO2 uptake by terrestrial ecosystems (typically termed carbon sink). However, the contributions of regional ecosystems ...


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

22.05.2015 | 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 ...


Activation of the bacterial thermosensor DesK involves a serine zipper dimerization motif that is modulated by bilayer thickness [Biochemistry]

19.05.2015 | Larisa Estefanía Cybulski; Joost Ballering; Anastassiia Moussatova; Maria Eugenia Inda; Daniela B. Vazquez; Tsjerk A ..., Proceedings of the National Academy of Sciences current issue, 2015

DesK is a bacterial thermosensor protein involved in maintaining membrane fluidity in response to changes in environmental temperature. Most likely, the protein is activated by changes in membrane thickness, but the molecular mechanism of sensing and signaling is still poorly understood. Here we ...


Signature properties of water: Their molecular electronic origins [Physics]

19.05.2015 | Vlad P. Sokhan; Andrew P. Jones; Flaviu S. Cipcigan; Jason Crain; Glenn J. Martyna, Proceedings of the National Academy of Sciences current issue, 2015

Water challenges our fundamental understanding of emergent materials properties from a molecular perspective. It exhibits a uniquely rich phenomenology including dramatic variations in behavior over the wide temperature range of the liquid into water’s crystalline phases and amorphous states. We ...


Specific heat and sound velocity at the relevant competing phase of high-temperature superconductors [Physics]

19.05.2015 | Chandra M. Varma; Lijun Zhu, Proceedings of the National Academy of Sciences current issue, 2015

Recent highly accurate sound velocity measurements reveal a phase transition to a competing phase in YBa2Cu3O6+δ that is not identified in available specific heat measurements. We show that this signature is consistent with the universality class of the loop current-ordered state when the ...


[Report] Whole-body endothermy in a mesopelagic fish, the opah, Lampris guttatus

15.05.2015 | Nicholas C. Wegner; Owyn E. Snodgrass; Heidi Dewar; John R. Hyde, Science , 2015

Endothermy (the metabolic production and retention of heat to warm body temperature above ambient) enhances physiological function, and whole-body endothermy generally sets mammals and birds apart from other animals. Here, we describe a whole-body form of endothermy in a fish, the opah (Lampris ...


Energies, Vol. 8, Pages 4416-4435: Graded-Bandgap Solar Cells Using All-Electrodeposited ZnS, CdS and CdTe Thin-Films

15.05.2015 | Echendu, Obi K.; Dharmadasa, Imyhamy M., Energies, 2015

A 3-layer graded-bandgap solar cell with glass/FTO/ZnS/CdS/CdTe/Au structure has been fabricated using all-electrodeposited ZnS, CdS and CdTe thin layers. The three semiconductor layers were electrodeposited using a two-electrode system for process simplification. The incorporation of a wide ...


Energies, Vol. 8, Pages 4400-4415: Online Internal Temperature Estimation for Lithium-Ion Batteries Based on Kalman Filter

15.05.2015 | Sun, Jinlei ; Wei, Guo ; Pei, Lei ; Lu, Rengui ; Song, Kai ; Wu, Chao ; Zhu, Chunbo, Energies, 2015

The battery internal temperature estimation is important for the thermal safety in applications, because the internal temperature is hard to measure directly. In this work, an online internal temperature estimation method based on a simplified thermal model using a Kalman filter is proposed. As ...


Energies, Vol. 8, Pages 4216-4236: 3-D CFD Modeling for Parametric Study in a 300-MWe One-Stage Oxygen-Blown Entrained-Bed Coal Gasifier

11.05.2015 | Park, Sang Shin; Jeong, Hyo Jae; Hwang, Jungho, Energies, 2015

Three-dimensional computational fluid dynamics (CFD) modeling of the gasification performance in a one-stage, entrained-bed coal gasifier (Shell Coal Gasification Process (SCGP) gasifier) was performed, for the first time. The parametric study used various O2/coal and steam/coal ratios, and the ...


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