Now showing items 41-50 of 92
Electrochemical reduction of uridine in dimethyl sulfoxide: effect of the ribose group
(Elsevier, 1981-06)
The easier electrochemical reduction of uridine (1-[beta]-D-ribofuranosyluracil) in dimethyl sulfoxide as compared to uracil (2, 4-dihydroxypyrimidine) by ca. 0.1 V is explicable on the basis of the electron-withdrawing ...
Round buoyant laminar and turbulent plumes
(The American Institute of Physics, 1981-05)
Two approximate solutions, which become exact for Prandtl numbers 1 and 2, are given for laminar round plumes for arbitrary Prandtl number σ. The first of these gives a very accurate solution for laminar found plumes in ...
Experimental study of parametric instabilities driven by finite-extent lower-hybrid waves
(IOP Publishing Ltd, 1981-06-01)
The lower-hybrid wave is an attractive candidate for the supplemental heating of Tokamak plasmas because of its engineering advantages in a reactor environment. It is estimated that 50 MW of supplementary r.f. heating power ...
Solution of the Fokker-Planck transport equation by matrix factorization
(Elsevier, 1981-08)
A matrix factorization method is used to solve the Fokker-Planck (Landau) charged particle transport equation. By treating all phase space variables as discrete in analogy to Sn neutronics, the collision term takes on a ...
Monte Carlo calculations of a bismuth germanate scintillation detector
(Elsevier, 1981-08-15)
Intrinsic efficiency, radial distribution of deposited energy and other properties of importance were investigated for bismuth germanate slabs via Monte Carlo calculation. The calculations were done for different slab ...
Light scattering spectrum of a suspension of interacting Brownian macromolecules
(The American Institute of Physics, 1981-07-15)
The joint effect of direct and hydrodynamic interactions on the dynamic structure S (k,t) of a solution of rigid macromolecules is examined. The initial slope dS/dt and initial curvature d2 S/dt2 of S(k,t) are obtained. ...
Periodic heat transfer in fins with variable thermal parameters
(Elsevier, 1981-08)
Periodic heat transfer in a convecting fin with temperature dependent thermal conductivity and coordinate dependent heat transfer coefficient, is analyzed using a perturbation analysis. The zero-order problem, which ...
Chemiluminescence of nitric oxide: The NO (C2[Pi]-A2[Sigma]+) rate constant
(Elsevier, 1981-05)
A rocket borne scanning 1/4-m spectrometer was used to observe the night airglow between 1900 and 2300 A at a resolution of 15 A. An attitude control system oriented the payload horizontally near apogee (150 km) and pointed ...
Approximate degeneracies of zone boundary phonons in alkali halide crystals
(Elsevier, 1981-03)
We point out the existence of a pervasive pattern of near degeneracies of phonon frequencies in isobaric alkali halide crystals (NaBr, KCl, RbBr, CsI) which strongly suggests that their dynamical matrices are almost invariant ...