Results 11 to 20 of about 184,702 (266)

A Case Study of Thermal Evolution in the Vicinity of Geothermal Probes Following a Distributed TRT Method

open access: yesEnergies, 2021
To meet the stated climate change targets and to ensure the capability of meeting the current and future energy demands, there is an urgent need to develop renewable energy sources, such as geothermal systems.
Hans Schwarz   +5 more
doaj   +1 more source

An Experimental Study on the Effect of Magmatic Thermal Evolution on the Molecular Structure of Low-Rank Coal

open access: yesApplied Sciences, 2023
Low-rank coal accounts for over half of China’s proven coal reserves. The possibility of coal and gas outbursts in low-rank coal is higher, especially in the m·agmatic thermal evolution area.
Wei Zhao   +4 more
doaj   +1 more source

The Likely Thermal Evolution of the Irregularly Shaped S-Type Astraea Asteroid

open access: yesRemote Sensing, 2022
The thermal evolution of asteroids provides information on the thermal processes of the protoplanetary disk. Since irregular bodies have a large surface subject to fast heat loss, we used the finite element method (FEM) to explore the likely thermal ...
Zhen Zhong   +5 more
doaj   +1 more source

Quantitative investigation of thermal evolution and graphitisation of diamond abrasives in powder bed fusion-laser beam of metal-matrix diamond composites

open access: yesVirtual and Physical Prototyping, 2023
Preventing the thermal damage of diamond abrasives is the major challenge of diamond composites in the field of super-hard tools by laser additive manufacturing.
Qingyuan Ma   +10 more
doaj   +1 more source

An Energy-Based Approach for Fatigue Life Estimation of Welded Joints without Residual Stress through Thermal-Graphic Measurement

open access: yesApplied Sciences, 2019
The traditional methodologies for fatigue life assessment of welded joints strongly depend on geometries and surface characteristics, as well as time. In this paper, an energy-based approach, independent of structures though thermal-graphic measurement ...
Chengji Mi   +3 more
doaj   +1 more source

The Place of RNA in the Origin and Early Evolution of the Genetic Machinery

open access: yesLife, 2014
The extant genetic machinery revolves around three interrelated polymers: RNA, DNA and proteins. Two evolutionary views approach this vital connection from opposite perspectives.
Günter Wächtershäuser
doaj   +1 more source

First-principles calculations into LiAl(NH2)4 and its derivative hydrides for potential sodium storage

open access: yesResults in Physics, 2020
In this work, we have employed the first-principles quantum physics method to investigate the light-metal based LiAl(NH2)4 and its modified compounds as conversion electrode materials for sodium-ion batteries on the basis of state-of-the-art Density ...
Yingying Ren   +3 more
doaj   +1 more source

Thermal and Magmatic Evolution of the Moon

open access: yesReviews in Mineralogy and Geochemistry, 2006
As with all science, our continually developing concepts of lunar evolution are firmly tied to both new types of observations and the integration of these observations to the known pool of data. This process invigorates the intellectual foundation on which old models are tested and new concepts are built.
Shearer, C   +15 more
openaire   +2 more sources

THERMAL EVOLUTION OF CALCIUM PHOSPHATE FOAM CERAMICS OBTAINED ON THE BASIS OF HYDROXYAPATITE AND MONOCALCIUM PHOSPHATE OF MONOHYDRATE

open access: yesФизико-химические аспекты изучения кластеров, наноструктур и наноматериалов, 2019
The introduction of a 15 – 85 wt.% powder of monocalcium phosphate monohydrate Ca(H2PO4)2 · H2O into the hydroxyapatite suspension after annealing at 1200°C leads to the formation of resorbable calcium phosphate phases (tricalcium phosphate, calcium ...
V.K. Krut’ko   +3 more
doaj   +1 more source

The evolution of thermal physiology in endotherms

open access: yesFrontiers in Bioscience, 2010
Biologists usually refer to mammals and birds as homeotherms, but these animals universally experience regional and temporal variations in body temperature. These variations could represent adaptive strategies of heterothermy, which in turn would favor genotypes that function over a wide range of temperatures.
Michael J, Angilletta   +3 more
openaire   +2 more sources

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