Results 21 to 30 of about 358,220 (262)

Epoch dependent dark energy [PDF]

open access: yesAIP Conference Proceedings, 2009
We present a model in which the equation of state parameter w approaches -1 near a particular value of z, and has significant negative values in a restricted range of z. For example, one can have w ~ -1 near z = 1, and w > -0.2 from z = 0 to z = 0.3, and for z > 9.
B. H. J. McKellar   +5 more
openaire   +2 more sources

CONSTRAINTS ON THE DENSITY DEPENDENCE OF THE SYMMETRY ENERGY [PDF]

open access: yesInternational Journal of Modern Physics E, 2009
Collisions involving 112 Sn and 124 Sn nuclei have been calculated with the ImQMD transport model in order to place constraints on the density dependences of the nuclear symmetry energy. Consistent constraints on the symmetry energy at sub-saturation density have been obtained by comparing these transport calculations to measurements of isospin ...
Tsang M. B.   +29 more
openaire   +4 more sources

Dirac Equation for Energy-Dependent Potential With Energy-dependent Tensor Interaction

open access: yesJournal of the Nigerian Society of Physical Sciences, 2023
The relativistic symmetries of the Dirac equation were investigated with an energy-dependent tensor potential interaction for two different energy-dependent potentials under parametric Nikiforov-Uvarov method and supersymmetric quantum mechanics and shape-invariance method.
C. A. Onate, M. O. Oluwayemi, I. B. Okon
openaire   +2 more sources

Role of the Russian Federation in the European Security of Energy Supply [PDF]

open access: yesНаучно-аналитический вестник Института Европы РАН, 2019
The paper analyzes the current situation in the European gas market and defines the role of the Russian Federation in it. A range of issues which has a detrimental impact on the EU gas security system is identified.
Bella Nochvina
doaj   +1 more source

The Convergence of Energy Use from Renewable Sources in the European Countries: Spatio-Temporal Approach

open access: yesEnergies, 2021
This article presents the analysis of the convergence of energy use from renewable sources among chosen European countries using a spatio-temporal approach.
Mateusz Jankiewicz
doaj   +1 more source

Energy-Dependent Tunneling in a Quantum Dot [PDF]

open access: yesPhysical Review Letters, 2007
4 pages, 4 ...
MacLean, K.   +6 more
openaire   +4 more sources

Sustainable Energy in Post-Communist East- Central Europe - A Comprehensive Study

open access: yesTheory, Methodology, Practice, 2017
Energy is managed in a complex way by the theories of sustainability. All three pillars of sustainability (society, environment, and economy) are inseparable from the energy sector, because energy consumption causes so many externalities that threaten ...
Zoltán Nagy, Tekla Sebestyén Szép
doaj   +2 more sources

Energy Dependence of Delayed-Neutron Data [PDF]

open access: yesEPJ Web of Conferences, 2019
Delayed neutron data is essential in inherent reactor safety and in reactor control. The different sources and results of delayed neutron data in international databases will be discussed.
Foligno Daniela, Leconte Pierre
doaj   +1 more source

An Evaluation of Turkey's Energy Dependency

open access: yesEnergy Sources, Part B: Economics, Planning, and Policy, 2013
Energy dependency (ED) is the energy import level upon which an economy relies in order to meet its energy needs. ED is calculated by dividing net imports by the sum of gross inland energy consumption plus bunkers. This study aims to obtain performance scores to evaluate of Turkey's ED based on basic energy indicators (Model 1), sectoral energy ...
Sozen, A., Alp, I., Iskender, U.
openaire   +3 more sources

Dependence Analysis for the Energy Sector Based on Energy ETFs

open access: yesEnergies, 2023
This study investigates the effects of crude oil and natural gas future returns on energy stock portfolios. We consider returns of portfolios of energy companies approximated by energy ETFs and returns of Brent crude oil and natural gas contracts listed ...
Katarzyna Kuziak, Joanna Górka
doaj   +1 more source

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