introduction: supplies of illegal drugs play determinant roles in developing new cases, relapse after treatment and some health criteria. recently, iran has encountered an illicit new coming drug which belongs to opioids. this article presents the crack supply in retail market in tehran.   method: this qualitative study was conducted in 2009 in tehran. in-depth interviews with drug dealers, dru...

Studying the problem of quasi-commuting quantum minors, Leclerc and Zelevinsky [3] introduced the notion of weakly separated sets in [n] := {1, . . . , n}. They raised conjectures on the purity, with respect to this weakly separation relation, of certain set-systems. In particular, a conjecture on the purity of the whole Boolean cube 2; equivalently: on the max-clique purity of the graph on 2 w...

Motivation Tumor purity and ploidy have a substantial impact on next-gen sequence analyses of tumor samples and may alter the biological and clinical interpretation of results. Despite the existence of several computational methods that are dedicated to estimate tumor purity and/or ploidy from The Cancer Genome Atlas (TCGA) tumor-normal whole-genome-sequencing (WGS) data, an accurate, fast, and...