Results 11 to 20 of about 4,174,780 (335)
Известия высших учебных заведений: Геология и разведка, 2022 Introduction. Reservoirs composed of thin layers with different elastic properties exhibit the anisotropy of elastic properties. Anisotropic environments are studied using special seismic positioning systems that require large financial and time ...
M. K. Savoyskaya, I. O. Bayuk
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Journal of Rock Mechanics and Geotechnical Engineering, 2022 Rock quality designation (RQD) has been considered as a one-dimensional jointing degree property since it should be determined by measuring the core lengths obtained from drilling. Anisotropy index of jointing degree (AIjd) was formulated by Zheng et al.
Harun Sonmez +2 more
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Frontiers in Earth Science, 2022 During the operation stage of cold region tunnels, the isotropic surrounding rock in a freeze–thaw circle suffers long-term unidirectional freeze–thaw cycles and gradually transforms into transversely isotropic material, which induces the variation of ...
Zhitao Lv +3 more
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Sub-degree CMB anisotropy from space [PDF]
Astronomy and Astrophysics Supplement Series, 1997 In the context of the COBRAS/SAMBA mission study 1 , we discuss in-flight calibration of extended sky maps of the microwave sky using celestial sources. We simulate the observations in order to assess the accuracy obtainable for absolute and relative calibration of the Low Frequency Instrument (LFI), operating in the 30-130 GHz range.
BERSANELLI M. +4 more
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Standardized compliance matrixes for general anisotropic materials and a simple measure of anisotropy degree based on shear-extension coupling coefficient [PDF]
, 2015 The compliance matrix for a general anisotropic material is usually expressed in an arbitrarily chosen coordinate system, which brings some confusion or inconvenience in identifying independent elastic material constants and comparing elastic properties ...
Jiamin Zhao, Xiaoxiong Song, Bin Liu
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Perturbative degrees of freedom in loop quantum gravity: anisotropies [PDF]
Classical and Quantum Gravity, 2006 The relation between an isotropic and an anisotropic model in loop quantum cosmology is discussed in detail, comparing the strict symmetry reduction with a perturbative implementation of symmetry. While the latter cannot be done in a canonical manner, it allows to consider the dynamics including the role of small non-symmetric degrees of freedom for ...
Bojowald, M. +2 more
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Is the Universe Anisotropic Right Now? Comparing the Real Universe with the Kasner’s Space-Time
Particles, 2023 We investigate possible astronomical manifestations of space-time anisotropy. The homogeneous vacuum Kasner solution was chosen as a reference anisotropic cosmological model because there are no effects caused by inhomogeneity in this simple model with a
Serge Parnovsky
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International journal for numerical and analytical methods in geomechanics (Print), 2021 Many clay rocks have distinct bedding planes. Experimental studies have shown that their mechanical properties evolve with the degree of saturation (DOS), often with higher stiffness and strength after drying.
S. C. Ip, R. Borja
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Frontiers in Earth Science, 2014 Post-depositional compaction is an integral part of sedimentary rock formation and thus has been reasonably deemed as a major culprit for the long-recognized inclination-shallowing problem in sedimentary rocks.
Yongxiang eLi +3 more
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Multiscale model of global inner-core anisotropy induced by hcp-alloy plasticity [PDF]
, 2016 $\bullet$ Multiscale model of inner-core anisotropy produced by hcp alloy deformation$\bullet$ 5 to 20% single-crystal elastic anisotropy and plastic deformation by pyramidal slip $\bullet$ Low-degree inner-core formation model with faster ...
Cardin, Ph +3 more
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