Electron transfer reaction of theobromine (hereafter referred to as TB) and permanganate ion has been studied using spectrophotometric technique under pseudo first-order conditions at T = 24, [H+] 3.2 × 10–1 mol dm–3and I 1.0 dm–3 (Na2SO4). Stoichiometric study depicted that two moles TB were consumed by one mole ion. The rate the is first order in both [TB] [MnO4-] second overall. It was obser...

Palladium has attracted significant attention as a catalyst or co-catalyst for many electrochemical reactions in energy conversion devices. We have studied stability of commercial Pd/C sample an acidic electrolyte by exposing it to accelerated stress test (AST) mimic potential spikes fuel cells and electrolyzers during start/stop events. AST consisted extensive rapid cycling (5000 cycles, 1 V/s...

The effect of granulocyte-macrophage colony stimulatory factors (GM-CSF), acidic isoferritins, and E-type prostaglandins on the detection of the cycle status of human granulocyte-macrophage progenitor cells (CFU-GM) was investigated. Bone marrow cells were pulse-treated with control medium or high specific activity tritiated thymidine [3HTdr) and subsequently plated over feeder layers containin...

The exact role of the central acidic domain of Mdm2 in p53 degradation remains unclear. We therefore performed a systematic and comprehensive analysis of the acidic domain using a series of short deletions and found that only a minor part of the domain was indispensable for Mdm2-mediated p53 ubiquitylation. Moreover, we identified a short stretch of acidic amino acids required for p53 degradati...