Mechanisms underlying beta-adrenoceptor (beta-AR)-mediated vascular relaxation were studied in the isolated rat abdominal aorta. In the endothelium-denuded helical preparations, a non-selective beta-AR agonist isoprenaline elicited a concentration-dependent relaxation. In the absence of beta-AR antagonists, isoprenaline-induced relaxation was not practically affected by an adenylyl cyclase inhi...

Floating potential and ion current density measurements were taken on the laboratory model NASA-173Mv2 in order to improve understanding of the physical processes affecting Hall thruster performance at high specific impulse. Floating potential was measured on discharge chamber centerline over axial positions spanning 10 mm from the anode to 100 mm downstream of the exit plane. Ion current densi...

There is now general agreement that dilution of the internal potassium solution with a non-electrolyte shifts the threshold and the inactivation curve in the direction of a more positive internal potential (1-5). At first it was not clear whether the shift was due to dilution of potassium or to a change of ionic strength. Baker et al. (3) considered that the second alternative was more likely, ...

Abstract We deposited an ultrathin CoFeB(1.1 nm) layer, which functions as a storage layer of MgO-based magnetic tunnel junctions for spin-transfer-torque (STT) magnetoresistive random-access memory (MRAM), on ϕ 300 mm wafers at 100 K and investigated its effect the magnetization dynamics CoFeB. observed clear reductions in both inhomogeneous linewidth total damping parameter CoFeB compared to ...