Now showing items 61-70 of 1507
The 57Fe Mössbauer spectra of oriented single‐crystal and powder PbFe12O19 (abstract)
(The American Institute of Physics, 1991-04-15)
The recent determination of the crystal structure of PbFe12O19 by means of single‐crystal x‐ray diffraction has made it possible to carry out a definitive and comparative analysis of the structure‐property relationship of ...
Spark ignition of propane-air mixtures near the minimum ignition energy: Part II. A model development
(Elsevier, 1991-01)
A model is developed to simulate the kernel growth observed in the exprimental study of Part I. Kernel growth, described as a two-step process, initially involves a blast wave over a negligible short time followed by a ...
Compression of klockmannite, CuSe
(The American Institute of Physics, 1998-07-08)
Copper selenide (CuSe) was compressed in a diamond anvil cell at room temperature up to a pressure of 52 GPa and studied using energy dispersive x-ray diffraction and Raman spectroscopy. CuSe is nearly isostructural with ...
Infinite Prandtl Number Convection
(Kluwer Academic Publishers-Plenum Publishers; Kluwer Academic/Plenum Publishers ; Springer Science+Business Media, 1999-01)
We prove an inequality of the type N ≤ CR 1/3 (1+log + R ) 2/3 for the Nusselt number N in terms of the Rayleigh number R for the equations describing three-dimensional Rayleigh–Bénard convection in the limit of infinite ...
Stability of coextrusion through converging dies
(Elsevier, 1991-12)
A linear stability analysis of multilayer flow of viscoelastic liquids through long, converging dies is performed by a rigorous two-dimensional analysis (2-D), as well as by a simplified one-dimensional analysis (1-D) on ...
Validation of HRDI MLT winds with meteor radars
(Springer-Verlag; Springer-Verlag Berlin Heidelberg, 1997-10)
A validation study of the mesospheric and lower-thermospheric (MLT) wind velocities measured by the High-Resolution Doppler Imager (HRDI) on board the Upper-Atmosphere Research Satellite (UARS) has been carried out, comparing ...
Temperature dependence of deformation-assisted crystallization in amorphous Fe78B13Si9Fe78B13Si9
(The American Institute of Physics, 1998-09-28)
Low-energy ball milling of amorphous Fe78B13Si9Fe78B13Si9 has been performed at temperatures between 25 and 250 °C. Primary crystallization is observed after milling at elevated temperatures, but not after annealing at the ...
Renormalons and 1/Q21/Q2 corrections
(The American Institute of Physics, 1997-06-15)
We argue that the appearance of the Landau pole in the running coupling of QCD introduces 1/Q21/Q2 power corrections in current correlator functions. These terms are not accounted for by the standard operator product ...
The electronic spectrum of fullerenes from the Dirac equation
(Elsevier, 1993-10-04)
The electronic spectrum of sheets of graphite (plane honeycomb lattice) folded into regular polyhedra is studied. A continuum limit valid for sufficiently large molecules and based on the tight-binding approximation is ...
Spectral and dynamic properties of a 2D Luttinger liquid with current-current interactions
(IOP Publishing Ltd, 1994-04-25)
We calculate the Green function, particle-hole susceptibility and Cooper pair susceptibility of a 2D Luttinger liquid that results from an electron gas with long-range current-current interactions. The Haldane bosonization ...