نتایج جستجو برای: pressure distribution equation

تعداد نتایج: 1200669  

2005
B. T. Cox S. R. Arridge K. P. Köstli P. C. Beard

Photoacoustic imaging, which generates a map of the initial acoustic pressure distribution generated by a short laser pulse, has been demonstrated by several authors. Quantitative photoacoustic imaging takes this one stage further to produce a map of the distribution of an optical property of the tissue, in this case absorption, which can then be related to a physiological parameter. In this te...

2013
F. Bouanaka S. Rebiai

In this work, a model for a DC glow discharge at low pressure, used in many applications has been developed. This model allows the determination of plasma characteristics distributions in 2D geometry. The proposed theoretical model is applied to collisional argon plasma at low pressure in a reactor consisting of two plane parallel electrodes where the cathode is heated to a voltage of -250 V. T...

Journal: :journal of sciences islamic republic of iran 0

this paper criticizes the model and the new definition for osmotic pressure given by parsafar et al. [j. sci. i. r. iran, vol. 10, no. 4, 233 (1999)]. the model is a closed system containing 1 kg of solvent plus m mole of solute at constant temperature and under pressure p0 + ? where p0 is the standard pressure and ? is the osmotic pressure of the corresponding m molal solution. while the total...

Journal: :Journal of Geography, Environment and Earth Science International 2019

Ali Maghari, Hassan Behnejad

A new derivation of the quantum Boltzmann transport equation for the Fermion system from the quantum time evolution equation for the wigner distribution function is presented. The method exhibits the origin of the time - irreversibility of the Boltzmann equation. In the present work, the spin dependent and indistinguishibility of particles are also considered.

2015
A. E. Kaplan

A fully relativistic/QED theory of light pressure of an isotropic, in particular relic, radiation yields analytic results in the momentum decay of an electron over entire span of energies in the universe. Using a FokkerPlanck-like equation, the evolution of initial extremely-high-T electron distribution to low-energy spectral line is analytically obtained for momentum span over tens orders of m...

2014
A. E. Kaplan

A fully relativistic/QED theory of particle motion damping by light pressure of an isotropic, in particular relic, radiation yields analytic results for the momentum decay of an electron over entire span of energies in the Universe. Using a Fokker-Planck-like equation, the evolution of initial extremely-high-T electron distribution to low-energy spectral line is analytically obtained for moment...

Journal: :Progress of Theoretical Physics 1960

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