BACKGROUND Microvolt T-wave alternans (TWA) is reported to be closely associated with sudden cardiac death (SCD) and ventricular tachycardia (VT). Animal experiments revealed that microvolt TWA is highly dependent on heart rate. The purpose of this study was to determine whether patients with TWA at relatively low heart rates have increased vulnerability to ventricular tachyarrhythmias. METHO...

This paper addresses the question of CPU performance emulation, which allows experimenters to evaluate applications under a wide range of reproducible experimental conditions. Specifically, we propose Fracas, a CPU emulator that leverages the Linux Completely Fair Scheduler to achieve performance emulation of homogeneous or heterogeneous multi-core systems. Several benchmarks reproducing differ...

A new automated method for the quantitative analysis of cyproterone acetate (CPA) in human plasma has been developed using on-line solid phase extraction (SPE) prior to the LC-MS/MS determination. The method was based on the use of a pre-column packed with internal-surface reversed-phase material (LiChrospher RP-4 ADS, 25 mm x 2 mm) for sample clean-up coupled to LC separation on an octadecyl s...

Intramembranous charge movement was measured in frog cut twitch fibers mounted in a double Vaseline-gap chamber with a TEA.Cl solution at 13-14 degrees C in the central pool. When a fiber was depolarized from a holding potential of -90 mV to a potential near -60 mV, the current from intramembranous charge movement was outward in direction and had an early, rapid component and a late, more slowl...

The production of bioactive products from microalgae biomass with efficient and environmentally friendly technologies is a field great research interest. present work focuses on the recovery high-added value components Chlorella vulgaris through microwave-assisted extraction (MAE) aq. ethanol 90% v/v. effect temperature (40–60 °C), duration (5–25 min), solvent-to-biomass ratio (20–90 mLsolv/gbi...

Ovomacroglobulin and LDL fraction of egg yolk were effective to maintain the growth of established human cancer cell lines (Kato III, QG-90, Raji). A serum-free medium (BEM-841) containing 10 mM HEPES, 50 micrograms/ml of ovomacroglobulin, 0.1% (V/V) of LDL fraction of egg yolk, 10(-8) M catalase, 5 micrograms/ml of insulin, 5 micrograms/ml of transferrin, 5 ng/ml of selenium, 1 mg/ml of BSA, a...

Cryopreservation of monolayers of hepatocytes in a freezing medium containing 10% (v/v) dimethylsulfoxide, 90% (v/v) foetal calf serum retains cell morphology and viability, but cells lose up to 50% of their intracellular reduced glutathione. This is accompanied by a small increase in glutamate cysteine ligase expression in cryopreserved cultures, but glutathione synthetase expression is undete...