Now showing items 21-30 of 6635
Two-fluid atmosphere for relativistic stars
(IOP Publishing Ltd, 1999-04-01)
We have extended the Vaidya radiating metric to include both a radiation fluid and a string fluid. This paper expands our brief introduction to extensions of the Schwarzschild vacuum which appeared in 1998 Phys. Rev. D ...
Measurement of temperature, fuel concentration and equivalence ratio fields using tracer LIF in IC engine combustion
(Springer-Verlag, 2000-11)
A technique based on planar laser-induced fluorescence of 3-pentanone, for measurements of absolute concentration, temperature and fuel/air equivalence ratios in turbulent, high-pressure combustion systems such as an ...
Ion acoustic parametric decay instability in a plasma with [beta] > 1
(Elsevier, 1976-10-04)
It is found that in a plasma with [beta] > 1 a finite amplitude ion acoustic wave is unstable and decays into two shear Alfven waves propagating in opposite directions. The threshold and growth rate of the instability ...
The Role of Environment in Low-level Active Galactic Nucleus Activity: No Evidence for Cluster Enhancement
(IOP Publishing, 2012)
We use the AMUSE-Virgo and AMUSE-Field surveys for nuclear X-ray emission in early-type galaxies to conduct a controlled comparison of low-level supermassive black hole activity within cluster and field spheroids. While ...
Advances in ab initio thermodynamic studies on metal/oxide interfaces
(WILEY-VCH Verlag, 2011-05)
We provide a brief overview of the advances in ab initio thermodynamic studies on metal/oxide interfaces in this paper. Firstly, the development in interface modeling is briefly outlined. Secondly, the fundamentals of ...
Solutions of the Oppenheimer--Volkoff Equations Inside 9/8$^{ths}$ of the Schwarzschild Radius
(Springer-Verlag; Springer-Verlag Berlin Heidelberg, 1997-03)
We refine the Buchdahl 9/8 ths stability theorem for stars by describing quantitatively the behavior of solutions to the Oppenheimer–Volkoff equations when the star surface lies inside 9/8 ths of the Schwarzschild radius. ...
Space-charge-limited flows in the quantum regime
(The American Institute of Physics, 2006-05)
This paper reviews the recent developments of space-charge-limited (SCL) flow or Child-Langmuir (CL) law in the quantum regime. According to the classical CL law for planar diodes, the current density scales as 3/23∕2’s ...
Ultrasound detection using polymer microring optical resonator
(The American Institute of Physics, 2004-11-29)
Application of polymer waveguide microring resonators for high-frequency ultrasound detection is presented. The device consists of a microring optical resonator coupled to a straight optical waveguide which serves as input ...
Density and Current Density as Coordinates for a System of Interacting Bosons at Absolute Zero
(The American Institute of Physics, 1971-06)
The quantum field Hamiltonian expressed in terms of density and current density variables has been employed together with the equal‐time commutation relations among these variables to find the ground state energy and the ...