Now showing items 1-10 of 62
Radiation-affected laminar flame propagation
(Elsevier, 1982)
Increased laminar flame thickness and flame speed under the influence of radiation is shown in terms of an original heat transfer number where is the weighted nongreyness, [kappa]p and [kappa]R are the Planck mean and ...
Cartan–Gram determinants for the simple Lie groups
(The American Institute of Physics, 1982-11)
The Cartan–Gram determinants for the simple root systems are evaluated for the simple Lie groups An, Bn, Cn, Dn, and Ek (k=6,7,8). The determinants satisfy a linear recursion relation which turns out to be the same for all ...
Electron diffraction studies of hot molecules. I. Observed and calculated thermal expansions of SF6, CF4, and SiF4
(The American Institute of Physics, 1982-08-15)
A new method is described for the rapid heating (10−5–10−6 s) of gas molecules for study by electron diffraction. Laser irradiation of the tip of a micronozzle makes it possible to determine structures, amplitudes of ...
A phase cell cluster expansion for Euclidean field theories
(Elsevier, 1982-08)
We adapt the cluster expansion first used to treat infrared problems for lattice models (a mass zero cluster expansion) to the usual field theory situation. The field is expanded in terms of special block spin functions ...
A new class of fluid instabilities: Vorticity‐induced waveforms on falling parabolic jets
(The American Institute of Physics, 1982-05)
Steady streams issuing from horizontal circular ducts form stationary surface waves whose angular symmetry depends on the vorticity distribution within the duct. For Poiseuille flow, the observed sequences of wavelengths ...
Electron diffraction studies of hot molecules. II. ‘‘Anharmonic shrinkage effects’’ in SF6, CF4, and SiF4
(The American Institute of Physics, 1982-08-15)
Least squares refinements of diffraction intensities for SF6, CF4, and SiF4 yielded nonbonded internuclear distances that lagged increasingly behind values expected from the bond lengths, the higher the temperature. The ...
Feasibility of sharpening limited-angle tomography by including an orthogonal set of projections
(Elsevier, 1982-02-15)
In single photon emission nuclear medicine, computed tomography systems that employ only a limited angular range of projection data suffer from blurring in the depth (or z) direction. With simulated data, we show that ...
Cluster expansion for the dielectric constant of a polarizable suspension
(Kluwer Academic Publishers-Plenum Publishers; Plenum Publishing Corporation ; Springer Science+Business Media, 1982-05)
We derive a cluster expansion for the electric susceptibility kernel of a dielectric suspension of spherically symmetric inclusions in a uniform background. This also leads to a cluster expansion for the effective dielectric ...
Paleomagnetism of the Upper Silurian and Lower Devonian carbonates of New York State: evidence for secondary magnetizations residing in magnetite
(Elsevier, 1982-12)
Paleomagnetic directions for the Upper Silurian and Lower Devonian carbonates of the Helderberg escarpment (New York State) differ from expected Late Silurian and Early Devonian directions for cratonic North America. The ...
An analysis of the technical and economic performance of a parabolic trough concentrator for solar industrial process heat application
(Elsevier, 1982-09)
An identification of the principal design factors that influence the technical performance of a parabolic trough concentrator and which relate directly to design and manufacturing decisions is presented. These factors ...