Results 1 to 10 of about 2,592,045 (196)
INFORMATION, ENERGY, AND EVOLUTION [PDF]
, 2001 Within the current theory of evolution, the development in the direction of higher complexity is taken to be a necessary condition. This gives birth to a problem why this direction is prevalent for evolution.
Burgin, Dr. Mark, Simon, Irving
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Energy Evolution Characteristics of Rock Under Different Confining Conditions
Frontiers in Earth Science, 2022 Constant stiffness confining condition seems more reasonable than constant stress confining condition to simulate the actual confining stress environment of in situ rock which varies with the lateral strain.
Bi-Wen Zhang +6 more
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Energies, 2022 Conventional borehole pressure relief can meet the requirements for preventing rock bursts, but it can also easily destroy the roadway, resulting in system support failure.
Yangyang Li +6 more
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Analysis of Impact Mechanism and Energy Evolution Characteristics of Different Coal-Rock Systems
Meikuang Anquan, 2020 To further study the impact mechanism and energy evolution characteristics of different coal-rock systems, theoretical calculation and RFPA numerical simulation methods were used to compare and analyze different coal-rock systems from the energy point ...
WEI Hui
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Applied Sciences, 2023 The deformation and failure of underground engineering are usually caused by unloading. In this work, triaxial unloading confining pressure tests are carried out to simulate the failure process of rock mass caused by unloading, analyze the crack ...
Yanwei Duan, Guohua Zhang, Tao Qin
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Remarks on high energy evolution [PDF]
Journal of High Energy Physics, 2005 We make several remarks on the B-JIMWLK hierarchy. First, we present a simple and instructive derivation of this equation by considering an arbitrary projectile wave function with small number of valence gluons. We also generalize the equation by including corrections which incorporate effects of high density in the projectile wave function. Second, we
Kovner, Alex, Lublinsky, Michael
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Mechanical Properties and Energy Evolution Law of Fractured Coal under Low Confining Pressure
Applied Sciences, 2022 To study the mechanical properties and energy evolution characteristics of the shallow fractured coal in the Western China mining area, a series of triaxial compression tests was carried out on fractured coal specimens.
Zhiqi Wang, Xufei Gong, Xuebin Gu
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Cosmological Evolution with Negative Energy Densities
Astrophysics, 2022 For general number of spatial dimensions we investigate the cosmological dynamics driven by a cosmological constant and by a source with barotropic equation of state. It is assumed that for both those sources the energy density can be either positive or negative. Exact solutions of the cosmological equations are provided for flat models.
Saharian, A. A. +5 more
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Numerical Simulation of Rock Dynamic NSCB Test Based on a Self-Developed Dynamic Damage Model
Frontiers in Earth Science, 2022 Elucidating and understanding the dynamic fracture characteristics of rocks play an essential role in the application of rock engineering and geophysics.
Xuelong Hu +14 more
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Seeking evolution of dark energy [PDF]
The European Physical Journal C, 2011 We study how observationally to distinguish between a cosmological constant (CC) and an evolving dark energy with equation of state $\omega(Z)$. We focus on the value of redshift Z* at which the cosmic late time acceleration begins and $\ddot{a}(Z^{*}) = 0$.
Frampton, Paul H., Ludwick, Kevin J.
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