Now showing items 41-50 of 62
Isothermal enthalpy studies of poly(methyl methacrylate) stereoisomers and their blends
(The American Institute of Physics, 1982-10)
The residual enthalpies of slow cooled atactic and isotactic poly(methyl methacrylate) were measured as a function of temperature. The samples were found to contain exothermic amorphous heats which decreased linearly with ...
Boundary effects on the dynamics of channels generated by laser‐initiated discharges
(The American Institute of Physics, 1982-10)
The dynamics of unbounded and bounded reduced density channels have been characterized by means of ruby laser schlieren photography. These channels are produced by CO2 laser‐initiated discharges in clean atmospheric pressure ...
Instrument system for monitoring cavitation noise
(IOP Publishing Ltd, 1982-07-01)
The aim of this work is to contribute toward the development of a monitoring system for cavitation damage prediction in hydraulic machinery particularly high performance centrifugal pumps. A high-frequency pressure-bar ...
Thermoelastic temperature changes in poly(methyl methacrylate) at high hydrostatic pressure: Experimental
(The American Institute of Physics, 1982-10)
Temperature changes as a result of large rapid hydrostatic pressure changes were measured for poly(methyl methacrylate) at various temperatures from ambient to 95 °C and for various pressure increments from 14 to 207 MN/m2. ...
Lightweight ozonizer for field and airborne use
(The American Institute of Physics, 1982-12)
An efficient, lightweight apparatus for the production of ozone in flowing oxygen or air has been constructed and tested. The exciter is an automotive electronic ignition running from a 28‐V dc power source. The discharge ...
Correlation of spectral and heat‐capacity Schottky contributions for Dy2O3, Er2O3, and Yb2O3
(The American Institute of Physics, 1982-05-01)
A self‐consistent interpretation of the Raman and infrared spectra and the heat‐capacity measurements on Dy2O3, Er2O3, and Yb2O3, which have the cubic (bixbyite) structure, is presented. New spectra recorded at 10, 80, and ...
On the validity of modeling rayleigh scatterers by spheroids
(Springer-Verlag, 1982-10)
For single homogeneous lossy dielectric Rayleigh particles, the manner in which the particle shape affects the absorption and scattering is examined by computing the polarizability tensor elements using a general purpose ...
Supersymmetry and Lie algebras
(The American Institute of Physics, 1982-08)
Starting from the standard supersymmetry algebra, an infinite Lie algebra is constructed by introducing commutators of fermionic generators as members of the algebra. From this algebra a finite Lie algebra results for fixed ...
The interpenetration of two chain polymers in a good solvent
(The American Institute of Physics, 1982-10-15)
The interpenetration of two excluded‐volume chain molecules of different size in dilute solution is studied via scaling and renormalization methods. The chains are found to interpenetrate much more strongly than smoothed‐density ...