Coking and metal sintering are limitations of large-scale applications Ni/Al2O3 catalysts in DRM reactions. In this review, several modification strategies to enhance the anti-deactivation property proposed discussed with recently developed catalyst systems, including structure morphology control, surface acidity/basicity, interfacial engineering oxygen defects. addition, structure–performance ...

infective endocarditis is one of the most severe complications of parenteral drug abuse. the outstanding clinical feature of infective endocarditis in intravenous drug abusers is the high incidence of right-sided valve infection, and the tricuspid valve is involved in 60% to 70% of the cases. we herein report a case of isolated pulmonic valve infective endocarditis with a native pulmonary valve.

This study presents an experimental investigation of a piston engine driven by compressed air. The compressed air engine was a modified 100 cm 3 internal combustion engine obtained from a motorcycle manufacturer. The experiments in this study used a test bench to examine the power performance and pressure/temperature variations of the compressed air engine at pressures ranging from 5 to 9 bar (...

As shown previously, immune complexes engender in rabbit serum a factor capable of inducing chemotaxis of rabbit polymorphonuclear leukocytes. This chemotactic factor consists of a complex of the fifth, sixth, and seventh components of complement. As demonstrated here, the polymorphonuclear leukocytes incubated with such treated rabbit serum lose their ability to respond chemotactically to the ...

Phenethyl isothiocyanate (PEITC) is an isothiocyanate found in watercress as the glucosinolate (gluconasturtiin). The isothiocyanate is converted from the glucosinolate by intestinal microflora or when contacted with myrosinase during the chopping and mastication of the vegetable. PEITC manifested protection against chemically-induced cancers in various tissues. A potential mechanism of chemopr...

Human ether-á-go-go-related gene (hERG) potassium channels have voltage-dependent closing (deactivation) kinetics that are unusually slow. A Per-Arnt-Sim (PAS) domain in the cytoplasmic N-terminal region of hERG regulates slow deactivation by making a direct interaction with another part of the hERG channel. The mechanism for slow deactivation is unclear, however, because the other regions of t...

the patient was a 19 year-old woman with the diagnosis of resistant hypertension, although she was under treatment of three classes of anti-hypertensive drugs (beta blocker, angiotensin receptor blocker, diuretic) for more than one year. in physical examination there was only a significant difference between the systolic blood pressure of upper and lower extremities (200 vs. 120 mmhg), without ...

Studies of skeletal muscle from rodents performed both in vivo and in vitro suggest a regulatory role of glycogen synthase kinase (GSK) 3 in glycogen synthase (GS) activation in response to insulin. Recently, hyperinsulinemic clamp studies in humans support such a role under nearly physiological conditions. In addition, in rats the activation of GS in skeletal muscle during treadmill running is...