Results 21 to 30 of about 4,483,704 (311)

Distribution and intensity of High-Temperature Low-Pressure metamorphism across the Pyrenean-Cantabrian belt: constraints on the thermal record of the pre-orogenic hyperextension rifting

open access: yesBSGF - Earth Sciences Bulletin, 2021
Whereas a straightforward link between crustal thinning and geothermal gradients during rifting is now well established, the thermal structure of sedimentary basins within hyperextended domains remains poorly documented.
Ducoux Maxime   +6 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 analysis of microstructural evolution of Al2O3 surface modified layers [PDF]

open access: yes, 2010
Solidification behavior and microstructural evolution of surface modified layers in plasma cladding technique are studied via numerical simulations. Both the coupling effect of temperature and solid volume fraction are considered in the proposed thermal ...
马维, Ma W
core   +1 more source

THERMAL HISTORY OF THE GULI PLUTON (NORTH OF THE SIBERIAN PLATFORM) ACCORDING TO APATITE FISSION-TRACK DATING AND COMPUTER MODELING

open access: yesГеодинамика и тектонофизика, 2020
We present the first results of fission-track dating of apatite monofractions from two rock samples taken from the Southern carbonatite massif of the world’s largest alkaline ultrabasic Guli pluton (~250 Ma), located within the Maymecha-Kotuy region of ...
M. S. Myshenkova   +6 more
doaj   +1 more source

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

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 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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