Now showing items 71-80 of 4078
A theory of ionospheric thermal radiation
(Elsevier, 1966-08)
The ionosphere is considered as a dissipative medium in which the random thermal motions of the charged particles act as a source of thermal radiation. Attention has been focused on the electrons colliding with ions and ...
CT and ultrasound in abscess detection at specific anatomic sites: A study of 198 patients
(Elsevier, 1987)
Records of 902 patients with possible abdominal abscess were reviewed and of these 198 had abscesses on at least one occasion imaged either with ultrasound (US) or computed tomography (CT). There were 235 episodes of either ...
A Spectral Element Basin Model for the Shallow Water Equations
(Elsevier, 1993-11)
A spectral element model is built for the shallow water equations in complex geometry. It is proved to be an efficient computational model in solving oceanic problems. In particular, the equatorial Rossby modon's reflection ...
Measurement of the Thermal Conductivity of Argon, Krypton, and Nitrogen in the Range 800–2000°K
(The American Institute of Physics, 1972-09-15)
The thermal conductivities of argon, krypton, and nitrogen were measured at 760 mm Hg in the temperature range 800–2000°K. Two thermal conductivity columns of different outside diameters were used in the experiments to ...
Influence of Rotational Levels on Slow‐Neutron Scattering by Linear Gases
(The American Institute of Physics, 1967-01-01)
Calculations of slow‐neutron partial differential scattering cross sections are reported for molecules with linear symmetry in which the quantum‐mechanical nature of the rotational levels is taken explicitly into account. ...
Calculation of the Heat Capacity Curves of Crystalline Benzene and Benzene‐d6
(The American Institute of Physics, 1937-08)
The heat capacity curve for solid benzene has been computed with the help of the set of internal frequencies previously proposed by Lord and Andrews. The agreement with experiment is satisfactory over the entire temperature ...
Reaction between YBa2Cu3O7−x and water
(The American Institute of Physics, 1989-02-01)
Reaction between water at 80 °C and YBa2Cu3O7−x (0.8<x<0.0) is studied using x‐ray absorption fine structure (EXAFS) and x‐ray diffraction (XRD). Oxygen deficient YBa2Cu3O7−x reacts with water and decomposes into BaCO3, ...
Laser cavity mirror imperfections and reflectivity: A time‐dependent numerical approach
(The American Institute of Physics, 1995-01-16)
While the cleaving process used for semiconductor Fabry–Pérot lasers produces atomically abrupt mirrors, there is considerable interest in mirrors defined by etching. Depending on the etching process employed, disorder of ...
An integral method for mixing, chemical reactions, and extinction in unsteady strained diffusion layers
(Elsevier, 1991-02)
An integral method is presented for determining the evolution of molecular mixing, finite rate chemical reactions, and local extinction in diffusion layers under the effect of an unsteady strain rate. The partial differential ...