Reactive sulfur species (RSS) such as H2S, HS•, H2Sn, (n = 2-7) and HS2•- are chemically similar to H2O and the reactive oxygen species (ROS) HO•, H2O2, O2•- and act on common biological effectors. RSS were present in evolution long before ROS, and because both are metabolized by catalase it has been suggested that "antioxidant" enzymes originally evolved to regulate RSS and may continue to do ...

We report on BeppoSAX observations of the X-ray transient XTE J0421+560 in quiescence 156, 541, and ∼690 days after the maximum of the 1998 April outburst. In the first observation the source was soft with a power-law photon index, α, of 4.0±1.9 0.9 and absorption, NH, of (1.1±4.9 1.1) × 1021 atom cm−2. In the second observation, the source brightened by a factor ∼15 in the 1–10 keV energy rang...

Introduction: Hydrogen sulfide (H2S) plays a key role in the regulation of vascular tone and protection of blood vessels against endothelial dysfunction. Since the mechanism of salt impairing H2S-induced vascular relaxation is not fully clear, therefore this study was designed to investigate the role of potassium (K+) channels in the vasodilatory effects of exogenous H2S in rat aortic rings.&nb...

Abstract Introduction For cancer survivors, insomnia is a frequent and distressing concern. Cognitive behavioral therapy for (CBT-I) an effective treatment, yet in-person care can be difficult survivors to access variety of socioeconomic, medical logistical reasons. In pilot randomized clinical trial, four, weekly sessions virtually-delivered, synchronous CBT-I were feasible, acceptable, seemin...

introduction: hydrogen sulfide (h2s) plays a key role in the regulation of vascular tone and protection of blood vessels against endothelial dysfunction. since the mechanism of salt impairing h2s-induced vascular relaxation is not fully clear, therefore this study was designed to investigate the role of potassium (k+) channels in the vasodilatory effects of exogenous h2s in rat aortic rings. ma...

This work demonstrates single-shot, two-dimensional temperature measurements in a premixed linear detonation channel using two-color OH planar laser-induced fluorescence thermometry. Detonation environments result extreme thermodynamic conditions which create challenges the resulting spectroscopic behavior. However, thermometry based on ratio of P1(9)/Q1(14) transitions within A2Σ+←X2Π(1,0) ban...