We show that the counting sequence for permutations avoiding both of (classical) patterns 1243 and 2134 has algebraic generating function supplied by Vaclav Kotesovec A164651 in The On-Line Encyclopedia Integer Sequences.

Herb-drug interaction strongly limits the clinical utilization of herbs and synthetic drugs. The inhibition of drug metabolism has been widely accepted to be an important reason for herb-drug interaction. The present study aims to investigate the inhibitory potential of herbal component scutellarein towards the metabolism of AZT which is the first U.S. government-approved antiretroviral drug fo...

This article has been retracted. Please see the retraction notice for more detail: https://doi.org/10.1007/s12206-020-1243-8

Green chemistry does not operate as an isolated subsystem, but within higher levels of corporation and society. From an environmental standpoint, the ideal focus is to achieve optimum performance across the system, not at a single systems level. This paper proposes a four-level system for green chemistry and provides examples of performance at each level that can legitimately be termed sustaina...