Results 21 to 30 of about 1,514,329 (231)

Stringy Probe Particle and Force Balance [PDF]

open access: yes, 1999
We directly derive the classical equation of motion, which governs the centre of mass of a test string, from the string action. In a certain case, the equation is basically same as one derived by Papapetrou, Dixon and Wald for a test extended body.
A. Papapetrou   +28 more
core   +2 more sources

The New Method for Determining the Composition of Wood Gas Produced in Gas Generators of the Inverted Gasification Process

open access: yesИзвестия высших учебных заведений и энергетических объединенний СНГ: Энергетика, 2019
The article presents a new method for determining the composition of wood generator gas produced in gas generators of the inverted gasification process.
E. M. Kashin, V. N. Didenko
doaj   +1 more source

Kinetic equation consistent with the equation of state of nuclear matter [PDF]

open access: yes, 1998
A kinetic equation which combines the quasiparticle drift of Landau's equation with a dissipation governed by a nonlocal and noninstant scattering integral in the spirit of Snider's equation for gases is derived.
Alm   +26 more
core   +2 more sources

Electromagnetic momentum balance equation and the force density in material media [PDF]

open access: yesRevista Brasileira de Ensino de Física, 2012
We present a momentum balance equation derived directly from Maxwell's equations. This equation contains a force density, which we call Maxwell's force density, which generalizes the Lorentz force density, now including total fields rather than only ...
I. Campos   +2 more
doaj   +1 more source

Power System Day-Ahead Unit Commitment Based on Chance-Constrained Dependent Chance Goal Programming

open access: yesEnergies, 2018
In the context of large-scale renewable energy integrated into an electrical power system, the effects of power forecast errors on the power balance equation of the power system unit commitment model is considered.
Zhiwei Li   +3 more
doaj   +1 more source

Application of the Material Balance Equation Based on the BET Multimolecular Fractal Theory in a Shale Gas Reservoir

open access: yesFrontiers in Energy Research, 2022
During shale gas reservoir development, obtaining actual formation pressure is challenging; therefore, it is challenging to obtain a single well production allocation using the current formation pressure based on a productivity equation.
Tingting Qiu, Shuyong Hu, Jiayi Zhang
doaj   +1 more source

Inventory forecast of underground gas storage based on modified material balance equation

open access: yesPetroleum Exploration and Development, 2014
In view of the gap between the gas storage inventory forecasted by the traditional material balance equation and the actual inventory, experiments of displacing gas by water and displacing water by gas were carried out, and the modified material balance ...
Ligen TANG   +3 more
doaj   +1 more source

Estimation of infiltration parameters and the irrigation coefficients with the surface irrigation advance distance. [PDF]

open access: yesPLoS ONE, 2014
A theory based on Manning roughness equation, Philip equation and water balance equation was developed which only employed the advance distance in the calculation of the infiltration parameters and irrigation coefficients in both the border irrigation ...
Zhou Beibei, Wang Quanjiu, Tan Shuai
doaj   +1 more source

Dual Fluid for the Kerr Black Hole [PDF]

open access: yes, 2017
Rotating black holes are algebraically special solutions to the vacuum Einstein equation. Using properties of the algebraically special solutions we construct the dual fluid, which flows on black hole horizon. An explicit form of the Kerr solution allows
Lysov, Vyacheslav
core   +2 more sources

Global existence for a singular phase field system related to a sliding mode control problem

open access: yes, 2017
In the present contribution we consider a singular phase field system located in a smooth and bounded three-dimensional domain. The entropy balance equation is perturbed by a logarithmic nonlinearity and by the presence of an additional term involving a ...
Colli, Pierluigi, Colturato, Michele
core   +1 more source

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