Results 71 to 80 of about 84,936 (180)

L'atténuation intrinsèque des ondes sismiques. Deuxième partie : Théorie et modèles Intrinsic Attenuation of Seismic Waves. Part Two: Theory and Models

Oil & Gas Science and Technology, 2006
Le comportement d'une roche plus ou moins saturée est assimilé à un comportement visco-élastique linéaire. Cette théorie est examinée pour un milieu à une ou trois dimensions d'espace. Il est montré que les ondes planes se propageant dans un milieu visco-
Bourbie T.
doaj   +1 more source

Two-dimensional chiral crystals in the NJL model

, 2012
We investigate the phase structure of the Nambu--Jona-Lasinio model at zero temperature, allowing for a two-dimensional spatial dependence of the chiral condensate.
A. I. Larkin, A. I. Larkin, J. Kapusta, Michael Buballa, Stefano Carignano, W. Broniowski   +5 more
core   +1 more source

Transfer matrix solution of the Wako-Sait\^o-Mu\~noz-Eaton model augmented by arbitrary short range interactions

, 2010
The Wako-Sait{\^o}-Mu\~noz-Eaton (WSME) model, initially introduced in the theory of protein folding, has also been used in modeling the RNA folding and some epitaxial phenomena. The advantage of this model is that it admits exact solution in the general
, Bowler D R, Ducastelle F, Flammini A, H Dreyssé, Marchenko V I, Marchenko V I, Repain V, Tokar V I, Tokar V I Dreyssé H, V I Tokar, Wolfsheimer S   +11 more
core   +1 more source

Evaluation of hydrocarbons generated from the Permo-Carboniferous source rocks in Huanghua Depression of the Bohai Bay Basin, China

Energy Exploration & Exploitation, 2018
The Huanghua Depression is located in the north-centre of Bohai Bay Basin, which is a rift basin developed in the Mesozoic over the basement of the Huabei Platform, China. Permo-Carboniferous source rocks were formed in the Huanghua Depression, which has
Xiao-Rong Qu, Yan-Ming Zhu, Wu Li, Xin Tang, Han Zhang   +4 more
doaj   +1 more source

Manifestly covariant worldline actions from coadjoint orbits. Part I. Generalities and vectorial descriptions

Journal of High Energy Physics
We derive manifestly covariant actions of spinning particles starting from coadjoint orbits of isometry groups, by using Hamiltonian reductions. We show that the defining conditions of a classical Lie group can be treated as Hamiltonian constraints which
Thomas Basile, Euihun Joung, TaeHwan Oh
doaj   +1 more source

The transmission or scattering of elastic waves by an inhomogeneity of simple geometry: A comparison of theories [PDF]

The extended method of equivalent inclusion developed is applied to study the specific wave problems of the transmission of elastic waves in an infinite medium containing a layer of inhomogeneity, and of the scattering of elastic waves in an infinite ...
Fu, L. S., Sheu, Y. C.
core   +1 more source

Phase diagram for Coulomb-frustrated phase separation in systems with negative short-range compressibility

, 2008
Using numerical techniques and asymptotic expansions we obtain the phase diagram of a paradigmatic model of Coulomb frustrated phase separation in systems with negative short-range compressibility.
C. Di Castro, C. Ortix, E. L. Nagaev, E. L. Nagaev, G. D. Mahan, J. Lorenzana, P. M. Chaikin   +6 more
core   +1 more source

Pathway to a Compact SASE FEL Device

, 2015
Newly developed high peak power lasers have opened the possibilities of driving coherent light sources operating with laser plasma accelerated beams and wave undulators.
Biedron, S. G., Dattoli, G., Di Palma, E., Einstein, J., Milton, S. V., Petrillo, V., Rau, J. V., Sabia, E., Spassovsky, I.   +8 more
core   +1 more source

Natural frequency of beams with embedded piezoelectric sensors and actuators

, 2007
A mathematical model is developed to study the natural frequency of beams with embedded piezoelectric sensors and actuators. The piezoelectric sensors/actuators in a non-piezoelectric matrix (host beam) are analyzed as two inhomogeneity problems by using
Della, Christian N., Shu, Dongwei
core  

The principle of equivalent eigenstrain for inhomogeneous inclusion problems

International Journal of Solids and Structures, 2014
AbstractIn this paper, based on the principle of virtual work, we formulate the equivalent eigenstrain approach for inhomogeneous inclusions. It allows calculating the elastic deformation of an arbitrarily connected and shaped inhomogeneous inclusion, by replacing it with an equivalent homogeneous inclusion problem, whose eigenstrain distribution is ...
Ma, L, Korsunsky, A
openaire   +2 more sources