Now showing items 21-30 of 463
Equivalence of Elements Under Automorphisms of a Free Group
(Oxford University PressWiley Periodicals, Inc., 1974-07)
Solute concentration in the kidney-- I. a model of the renal medulla and its limit cases
(Elsevier, 1976)
We develop a general model of the renal medulla that is similar in geometry to the models reported by others. Two solutes are assumed to be present, one to play the role of salt and the other that of urea and similarly ...
Comparison of high energy neutron-nucleus total cross sections with theory
(Elsevier, 1976-06-07)
A recent paper by Julius purports to show that previous estimates of the effect of inelastic screening on neutron-nucleus total cross sections are much too large. However, we show that most of this discrepancy is due to ...
On tactical configurations with no four-cycles
(Elsevier, 1976-05)
An improved lower bound is given for the band sizes of tactical configurations of rank exceeding two having no 4-cycles. This bound is applied to find an optimal configuration with certain specified parameters. A formula ...
Quadratic variation of functionals of two-parameter Wiener process
(Elsevier, 1976-12)
The quadratic variation of functionals of the two-parameter Wiener process of the form f(W(s, t)) is investigated, where W(s, t) is the standard two-parameter Wiener process and f is a function on the reals. The existence ...
Collisional effects on the drift-cyclotron instability
(Elsevier, 1976-06)
The drift-cyclotron instability in a weakly collisional plasma is considered including temperature perturbations. Collisions are described by a model Fokker-Planck equations. The growth rate of the instability is obtained ...
Almost commuting matrices
(Elsevier, 1979-09)
It is shown that if A and B are n x n complex matrices with A = A* and ||AB - BA||2/(n - 1), then there exist n x n matrices A' and B' with A' = A'* such that A'B' = B'A' and ||A - A'||[les] [epsilon], ||B - B'||[les] ...
A generalization of the Goldman equation, including the effect of electrogenic pumps
(Elsevier, 1971-10)
An equation similar to the Goldman equation is derived for the steady-state diffusion of univalent ions across a membrane with arbitrary potential profile and in the presence of electrogenic pumps. The presence of electrogenic ...