It is shown that the pinning energy and pinning field increases monotonically with increasing pore diameter. A magnetic storage concept is introduced which combines percolated media and graded media which allows to write on magnetic films with ultra high anisotropies. (C) 2010 American Institute of Physics. [doi: 10.1063/1.3372611]“
“We Anti-infection inhibitor have developed a zero-shear viscous model in terms of temperature- and pressure-dependent hole fraction computed
from Simha-Somcynsky Hole Theory. This model successfully interprets the viscosity data of PS, PP, and ABS as a function of hole fraction for a broad range of temperature and pressure. We have also introduced and discussed a new term: Viscoholibility; the derivative of logarithm of viscosity with respect to hole fraction. When the hole fraction takes highest available value, the viscoholibility approaches asymptotically to a constant value by which the viscosity
changes linearly with the hole fraction. (C) 2010 Wiley Periodicals, AZD3965 nmr Inc. J Appl Polym Sci 117: 110-113,2010″
“Background: Patients with heart failure and preserved ejection fraction (HFpEF) are supersensitive to volume overload, and a striking increase in left atrial pressure (LAP) often occurs transiently and is rapidly resolved by intravascular volume reduction. The arterial baroreflex is a powerful regulator of intravascular stressed blood volume. We examined whether arterial baroreflex failure (FAIL) mimicked by constant carotid sinus pressure (CSP) causes a striking increase in LAP and systemic arterial pressure (AP) by volume loading in rats with normal left ventricular (LV) function.
Methods and Results: In anesthetized Sprague-Dawley Compound C rats, we isolated bilateral carotid sinuses and controlled CSP by a servo-controlled piston pump. We mimicked the normal arterial baroreflex by matching CSP to instantaneous AP and FALL by maintaining CSP at a constant value regardless of AP. We infused dextran stepwise (infused volume [Vi]) until LAP reached 15 mm Hg and obtained the LAP-Vi relationship. We estimated the critical Vi as the Vi at which LAP reached 20 mm Hg.
In FAIL, critical Vi decreased markedly from 19.4 +/- 1.6 mL/kg to 15.6 +/- 1.6 mL/kg (P < .01), whereas AP at the critical Vi increased (194 +/- 6 mm Hg vs 163 +/- 6 mm Hg; P < .01). We demonstrated that an artificial arterial baroreflex system we recently developed could fully restore the physiologic volume intolerance in the absence of native arterial baroreflex.
Conclusions: Arterial baroreflex failure induces striking volume intolerance in the absence of LV dysfunction and may play an important role in the pathogenesis of acute heart failure, especially in states of HFpEF.”
“In this review, the controversy regarding the preservation or degradation of chloroplast DNA (cpDNA) as chloroplasts develop their photosynthetic capacity and leaves reach maturity is addressed.