نتایج جستجو برای: relaxation time
تعداد نتایج: 1946180 فیلتر نتایج به سال:
We use a novel formulation of the relaxation time approximation to consistently calculate bulk and shear viscosity coefficients using QCD-inspired energy-dependent times phenomenological thermal masses obtained from fits lattice QCD thermodynamics. The matching conditions are conveniently chosen simplify computations.
We determine the dynamic magnetization induced in nonmagnetic metal wedges composed of silver, copper, and platinum by means of Brillouin light scattering microscopy. The magnetization is transferred from a ferromagnetic Ni80Fe20 layer to the metal wedge via the spin pumping effect. The spin pumping efficiency can be controlled by adding an insulating interlayer between the magnetic and nonmagn...
From the earliest days of nuclear magnetic resonance investigation, the ability of paramagnetic ions in aqueous solutions to cause the rapid relaxation of water protons has been recognized.'-' When biologists began to study the NMR relaxation of water protons in living tissues, they raised the question if the shortened spin-lattice relaxation time, or TI, and the spin-spin relaxation time, or T...
The induction characteristic of halothane in nitrous oxide and oxygen were compared with halothane in oxygen alone and intravenous induction with thiopentum and succinylcholine.Materials and Methods: A vital capacity technique was used for the gaseous induction groups using a mapleson F system and a 1-litre reservoir bag. four end points of anesthesia were recorded: time to cessation of hand gr...
PURPOSE Establishment of regional longitudinal (T1 ) and transverse (T2 ) relaxation times in awake pigeons and rats at 7T field strength. Regional differences in relaxation times between species and between two different pigeon breeds (homing pigeons and Figurita pigeons) were investigated. METHODS T1 and T2 relaxation times were determined for nine functionally equivalent brain regions in a...
Among the different fields of research in nuclear magnetic resonance (NMR) which are currently investigated in the Laboratory of Biomolecular Magnetic Resonance (LRMB), two subjects that are closely related to each other are presented in this article. On the one hand, we show how to populate long-lived states (LLS) that have long lifetimes T(LLS) which allow one to go beyond the usual limits im...
in this paper we consider a petrovsky viscoelastic inverse source problem with memory term in the boundary condition. we obtain sufficient conditions on relaxation function and initial data for which the solutions of problem are asymptotically stable when the integral overdetermination tends to zero as time goes to infinity.
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