Alexander Solan

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The present study represents the first effort to assess systematically the cognitive functioning of a population of individuals with Lesch-Nyhan syndrome using standardized psychometric instruments. Seven residents from a special hospital setting participated. They ranged in age from 10 years 1 month to 22 years 3 months (mean 13 years 7 months). Using the(More)
A study of the effect of an externally imposed magnetic field on the axisymmetry-breaking instability of an axisymmetric convective flow, associated with crystal growth from bulk of melt, is presented. Convection in a vertical cylinder with a parabolic temperature profile on the sidewall is considered as a representative model. A parametric study of the(More)
Idiopathic thrombocytopenic purpura (ITP) may develop during pregnancy or affect later pregnancies, causing serious risks of bleeding to the mother and fetus. High-dose intravenous immunoglobulin (IGIV) has caused an immediate and predictable rise in platelet count during the infusion in both adults and children with chronic or acute ITP. The rapid rise in(More)
Lesch-Nyhan syndrome (LNS) is a rare disorder of metabolism caused by a defective gene on the X chromosome. It is typically characterized by choreoathetosis, hypertonia, hyperreflexia, and self-mutilation. The present study is a 4-year follow-up investigation of the cognitive status of six subjects with a mean age of 17 years 10 months (range 14 years 9(More)
Four patients with advanced Kaposi's sarcoma who were treated with weekly vinblastine therapy achieved long-term remissions. Three patients are still in complete remission at two years, four years, and four years respectively, while the fourth achieved excellent partial remission lasting seven-and-one-half years. The regimen produced no toxicity. We suggest(More)
In this study we present a numerical investigation of steady states, onset of oscillatory instability, and slightly supercritical oscillatory states of an axisymmetric swirling flow of a Newtonian incompressible fluid in a cylinder, with independently rotating top and bottom. The first part of the study is devoted to the influence of coand counter-rotation(More)
A study of the three-dimensional axisymmetry-breaking instability of an axisymmetric convective #ow associated with crystal growth from bulk of melt is presented. Convection in a vertical cylinder with a parabolic temperature pro"le on the sidewall is considered as a representative model. The main objective is the calculation of critical parameters(More)
A computational approach to the study of three-dimensional instabilities of flows in a Czochralski crucible is proposed. The flow is driven by buoyancy, thermocapillarity and rotation of the crystal and the crucible. The thermal boundary conditions account for the prescribed temperatures or heat flux, as well as convective and radiative heating or cooling(More)
The three-dimensional instability of the thermocapillary convection in cylindrical undeformable floating zones heated laterally is studied numerically. Different types of the boundary conditions, including radiation heating, linearized radiation and prescribed heat flux are used in the calculation. Stability diagrams showing the Prandtl number dependence of(More)