Search results for "IPA"
showing 10 items of 5795 documents
Thermodynamically consistent residual-based gradient plasticity theory and comparison
2006
A gradient plasticity theory for small deformations is presented within the framework of nonlocal continuum thermodynamics. The second principle (Clausius–Duhem inequality), enriched by an additional term named energy residual, is employed in conjunction with the concepts of insulation condition and locality recovery condition, in order to derive all the pertinent restrictions upon the constitutive equations. These include the expressions of the energy residual and of the plastic dissipation density, as well as the PDEs governing the gradient kinematic and isotropic hardening of the material, together with the related higher-order boundary conditions for both the fixed and the moving bounda…
Persistent Tonic Facial Contraction: A Local Brain-Stem Sign
1993
Impairment of facial motility associated with contralateral hemiparesis is characteristic of pontine lesions. In the Millard-Gubler and Foville syndromes, involvement of the facial nerve is nuclear or infranuclear, resulting in a peripheral-type palsy. Conditions of pontine origin showing hyperactivity of facial muscles are facial myokymia and Brissaud’s syndrome. Brissaud and Sicard [4] reported low-frequency phasic cramplike facial contractions and contralateral hemiparesis in inflammatory brain-stem processes.
Il conferimento (immobili, aziende e partecipazioni), profili civilistici
2022
Il presente contributo si propone di indagare i profili di rilevanza civilistica del conferimento in società di persone di partecipazioni societarie e di azienda nonché di immobili, oltreché i profili attinenti ai conferimenti in società in nome collettivo, in società in accomandita semplice e in società di capitali. This contribution aims to investigate the profiles of civil law relevance of the transfer of shareholdings in companies and companies as well as of real estate to partnerships, as well as the profiles relating to transfers to general partnerships, limited partnerships and joint-stock companies .
"Desde la teoría y para la acción": la Transición en los artículos de José Vidal-Beneyto publicados en El País (1976-1996)
2015
The onset of convection in a two-layered porous medium with anisotropic permeability
2019
We consider convection in a horizontal porous layer of uniform thickness which is heated from below and which is composed of two anisotropic sublayers with principal axes lying in the three coordinate directions. The aim is to determine criteria for the onset of convection by finding the critical Rayleigh number, wavenumber and roll orientation relative to the coordinate axes. The full set of nondimensional parameters has at least six members even when the sublayers are considered to be thermally isotropic, and therefore, we select some special cases in order to illuminate the type of qualitative behaviour which may be expected. One such case is where the anisotropic sublayers are identical…
Convective instability in proto-neutron stars
2000
The linear hydrodynamic stability of proto-neutron stars (PNSs) is considered taking into account dissipative processes such as neutrino transport and viscosity. We obtain the general instability criteria which differ essentially from the well-known Ledoux criterion used in previous studies. We apply the criteria to evolutive models of PNSs that, in general, can be subject to the various known regimes such as neutron fingers and convective instabilities. Our results indicate that the fingers instability arises in a more extended region of the stellar volume and lasts a longer time than expected.
Magnetic field amplification and magnetically supported explosions of collapsing, non-rotating stellar cores
2014
We study the amplification of magnetic fields in the collapse and the post-bounce evolution of the core of a non-rotating star of 15 solar masses in axisymmetry. To this end, we solve the coupled equations of magnetohydrodynamics and neutrino transport in the two-moment approximation. The pre-collapse magnetic field is strongly amplified by compression in the infall. Initial fields of the order of 1010 G translate into proto-neutron star fields similar to the ones observed in pulsars, while stronger initial fields yield magnetar-like final field strengths. After core bounce, the field is advected through the hydrodynamically unstable neutrino-heating layer, where non-radial flows due to con…
Viscous dissipation and thermoconvective instabilities in a horizontal porous channel heated from below
2010
Accepted version of av article from the journal: International Journal of Thermal Sciences. Published version available on Science Direct: http://dx.doi.org/10.1016/j.ijthermalsci.2009.10.010 A linear stability analysis of the basic uniform flow in a horizontal porous channel with a rectangular cross section is carried out. The thermal boundary conditions at the impermeable channel walls are: uniform incoming heat flux at the bottom wall, uniform temperature at the top wall, adiabatic lateral walls. Thermoconvective instabilities are caused by the incoming heat flux at the bottom wall and by the internal viscous heating. Linear stability against transverse or longitudinal roll disturbances …
Human Rights in Romanian Courts: A European Perspective?
2016
The perception and application of the European Convention on Human Rights by various national jurisdictions depends fundamentally on the way in which the Convention has been introduced into national law, as well as, in some countries, by how constitutional jurisdictions shaped this relationship. The article examines the reception of the Convention by a few European states, with a special regard on the case of Romania. Romanian courts, including the Constitutional Court and the supreme court, had a hesitant approach of the principle established by 1991 Constitution of the priority of international law of human rights over domestic law. In the context of the diversity of sources of the Europe…
La constitution européenne: une lecture espagnole
2005
La versión que aquí se facilita es el texto mecanografiado por el autor, que posteriormente fue publicado en el diario "Le monde" con alguna pequeña variación.