Results 1 to 10 of about 576,694 (315)

Remarks on high energy evolution [PDF]

open access: yesJournal 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
openaire   +2 more sources

Dynamic equations for nonassociated gas accumulation

open access: yesPetroleum Exploration and Development, 2008
Nonassociated gas can be classified as conventional gas accumulation with displacement migration, source-contacting gas accumulation with piston-type migration, and shale gas accumulation with the displacement and piston-type migrations.
Jin-chuan ZHANG   +6 more
doaj   +1 more source

IS THERE EVIDENCE FOR DARK ENERGY EVOLUTION? [PDF]

open access: yesThe Astrophysical Journal, 2015
Recently, Sahni, Shafielo o & Starobinsky (2014) combined two independent measurements of $H(z)$ from BAO data with the value of the Hubble constant $H_0 = H(z=0)$, in order to test the cosmological constant hypothesis by means of an improved version of the $Om$ diagnostic.
Xuheng Ding   +4 more
openaire   +2 more sources

Numerical Modeling on the Fracturing and Energy Evolution of Large Deep Underground Openings Subjected to Dynamic Disturbance

open access: yesEnergies, 2020
The exploitation of deep resources is necessary for human development. At the same time, high-stress environments that are deep underground bring about great challenges vis-à-vis resource exploitation.
Chun Yang   +5 more
doaj   +1 more source

Cosmological Evolution with Negative Energy Densities

open access: yesAstrophysics, 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
openaire   +2 more sources

The continuing evolution of Energy Policy

open access: yesEnergy Policy, 2020
As the world confronts the Covid-19 pandemic, we hope that all of you are doing well. We know that many lives have been greatly disrupted, and that world economic activity is slowing and maybe declining in some places. We have read reports that energy consumption has been greatly affected by the slowdown in world economic activity—likely contributing ...
Brown, Stephen P.A.   +8 more
openaire   +2 more sources

The Evolution of Community Energy in the UK [PDF]

open access: yes, 2018
This UKERC Working Paper seeks to understand the factors contributing to the emergence, growth and nature of community energy in the UK. It is based on a review of existing data and literature, and focuses on investigating the role of financing mechanisms and business models in the evolution of the community energy sector.
Braunholtz-Speight, Tim   +6 more
openaire   +4 more sources

Experimental studies of instability process and energy evolution of tunnels under true triaxial stresses: The role of pre-existed flaws

open access: yesFrontiers in Earth Science, 2023
In the natural geological environment, there are many joints, faults and cavities. These natural defects will have an impact on the stability of tunnels.
Binglei Li   +4 more
doaj   +1 more source

Experimental and numerical research of crack propagation process and energy dissipation law of grouting specimens under radial impact load

open access: yesFrontiers in Earth Science, 2023
Different air pressures are used to conduct an impact test based on the split Hopkinson pressure bar (SHPB) test system to study the crack evolution process and energy dissipation law of the cemented rock under impact load.
Chang-Xing Zhu   +3 more
doaj   +1 more source

Damage Characteristics and Energy Evolution of Bituminous Sandstones under Different Cyclic Amplitudes

open access: yesApplied Sciences, 2023
In many underground engineering projects, rocks are often subjected to cyclic loading and unloading, such as repeated excavation of roadway surrounding rock, which will lead to damage to underground rocks, and the energy of rocks also changes. Therefore,
Xiaoyu Lu   +3 more
doaj   +1 more source

Home - About - Disclaimer - Privacy