Results 11 to 20 of about 1,079,884 (299)

An investigation into the role of time-dependent cohesion in interseismic fault restrengthening

open access: yesScientific Reports, 2019
Earthquakes typically exhibit recurrence times that far exceed time-scales attainable in a laboratory setting. To traverse the temporal gap between the laboratory and nature, the slide-hold-slide test is commonly employed as a laboratory analogue for the
M. P. A. van den Ende, A. R. Niemeijer
doaj   +1 more source

Thermodynamic Properties of MgAl2O4 Spinel at High Temperatures and High Pressures

open access: yesCrystals, 2023
Thermodynamic properties of MgAl2O4 spinel are significant in understanding the phase relations of the Earth’s crust and upper mantle, but available values from experimental measurements are limited at ambient pressure conditions to date.
Wuxueying Qiu   +3 more
doaj   +1 more source

Possible re-entrant superconductivity in EuFe2As2 under pressure [PDF]

open access: yes, 2008
We studied the temperature-pressure phase diagram of EuFe2As2 by measurements of the electrical resistivity. The antiferromagnetic spin-density-wave transition at T_0 associated with the FeAs-layers is continuously suppressed with increasing pressure ...
Gegenwart, P.   +8 more
core   +1 more source

The effect of temperature evolution on the interior structure of H${}_{2}$O-rich planets [PDF]

open access: yes, 1996
For most planets in the range of radii from 1 to 4 R$_{\oplus}$, water is a major component of the interior composition. At high pressure H${}_{2}$O can be solid, but for larger planets, like Neptune, the temperature can be too high for this.
Chen, K., Chi, H., Xie, D.
core   +2 more sources

Deep carbon cycle constrained by carbonate solubility

open access: yesNature Communications, 2021
Carbonate mineral aqueous solubility decreases as carbonates become more Mg-rich during subduction. Coupled with regional variations in amounts of carbon and water subducted, this explains discrepancies in estimates of carbon recycling, suggesting that ...
Stefan Farsang   +8 more
doaj   +1 more source

A calculation method of earth pressure on sheeting between two piles considering soil arching effect and intermediate principal stress

open access: yesShuiwen dizhi gongcheng dizhi, 2022
The classical theories of earth pressure are based on the M-C strength criterion, which do not consider the influence of soil arching effect and intermediate principal stress on earth pressure, so the theoretical earth pressures are significantly larger ...
Jinglin YOU, Shijie WANG, Haolan WANG
doaj   +1 more source

Earth Pressure During Earthquake

open access: yesSoils and Foundations, 1973
ABSTRACT In order to estimate the active earth pressure and the earth pressure at rest against the walls during earthquake, the authors carried out the tests using a large scale vibrating soil bin in laboratory. The resultant force due to the oscillating earth pressure, its applied point and the angle of wall friction were measured during the wall ...
Ichihara M., H. Matsuzawa
openaire   +2 more sources

Model Test Study of the Synergistic Interaction between New and Existing Components of Sheet Pile Walls

open access: yesApplied Sciences, 2023
New and existing components of retaining structures are often combined in the width section. When combining the design and use requirements of the existing and new structures, the synergistic interactions between the existing and new structures and the ...
Wenhui Zhao, Xiaomin Wu, Xuening Ma
doaj   +1 more source

The Pressure and Temperature Limits of Likely Rocky Exoplanets

open access: yes, 2019
The interior composition of exoplanets is not observable, limiting our direct knowledge of their structure, composition, and dynamics. Recently described observational trends suggest that rocky exoplanets, that is, planets without significant volatile ...
Panero, Wendy R., Unterborn, Cayman T.
core   +1 more source

Local structure of REFeAsO (RE=La, Pr, Nd, Sm) oxypnictides studied by Fe K-edge EXAFS

open access: yes, 2009
Local structure of REOFeAs (RE=La, Pr, Nd, Sm) system has been studied as a function of chemical pressure varied due to different rare-earth size. Fe K-edge extended X-ray absorption fine structure (EXAFS) measurements in the fluorescence mode has ...
A. BIANCONI   +8 more
core   +1 more source

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