Nature has provided prodigious reservoirs of pharmacologically active compounds for drug development since times. Physcion and physcion 8-O-β-D-glucopyranoside (PG) are bioactive natural anthraquinones which exert anti-inflammatory anticancer properties with minimum or no adverse effects. Moreover, also exhibits anti-microbial hepatoprotective properties, while PG is known to have anti...

Abstract Longer, healthier lives are a triumph in human history, but their implications for health systems, economies, and societies still up debate. Many observers policymakers, fact, view societal ageing as problem. For them, an population entails higher care costs, slower economic growth, fewer tax revenues, all of which is compounded if people age poor health. Taken together, many policymak...

We consider the problem of list edge coloring for planar graphs. Edge coloring is the problem of coloring the edges while ensuring that two edges that are incident receive different colors. A graph is k-edge-choosable if for any assignment of k colors to every edge, there is an edge coloring such that the color of every edge belongs to its color assignment. Vizing conjectured in 1965 that every...