Local cerebral blood flow (1CBF) was measured simultaneously in ten cats with (1) a large surface thermal diffusion probe resting on the cortex and (2) hydrogen clearance curves from implanted electrodes surrounding the thermal probe. A close correlation was found between 1CBF values obtained by the two methods. Since hydrogen clearance is accepted as quantitative, the data suggest that the the...

In this paper the thermal convective instabilities of a binary nanofluid is theoretically investigated. In order to analyze a binary nanofluid, an addition factor is proposed under linear stability theory which is applied to the stability analysis of normal fluid. The factor describes the effect of nanoparticles on the convective instability of a basefluid. The Soret effect which represents the...

A significant improvement of the quality factor Q0 from values of 1.5x10 to values around 3x10 at 1.8 K has been repeatedly achieved in a fully dressed and horizontally operated TESLA type SRF cavity by thermal cycling, i.e. heating the cavity briefly above the 9.2 K transition temperature of niobium and subsequent cooling. Conceivable explanations for this effect reach from (a) changes in shie...

In this study multivariate statistical analysis are used to characterize relationships between hydrochemical properties ofthermal and non-thermal springs. Four factors for thermal waters and two for non-thermal springs were extracted basedon factor analysis. In thermal springs, the first factor showed high loading on Ca, Mg, Na and K and this factor wasinterpreted as leaching of cations in the ...

The heating of the ion-neutral (or ambipolar) diffusion may affect the thermal phases of the molecular clouds. We present an investigation on the effect of this heating mechanism in the thermal instability of the molecular clouds. A weakly ionized one dimensional slab geometry, which is allowed for self-gravity and ambipolar diffusion, is chosen to study its thermal phases. We use the thermodyn...

[1] Abstract: Air withdrawn from the top 5–15 m of the polar snowpack (firn) shows anomalous enrichment of heavy gases during summer, including inert gases. Following earlier work, we ascribe this to thermal diffusion, the tendency of a gas mixture to separate in a temperature gradient, with heavier molecules migrating toward colder regions. Summer warmth creates a temperature gradient in the t...