To assess survival outcomes in a retrospective study, recurrent epithelial ovarian cancer patients were divided into three groups according to the platinum free interval as follows: platinum refractory that included the patients with tumor progression during treatment; platinum resistant and platinum sensitive that included the patients with tumor progression less than or more than six months, ...

let g be a group. a subset x of g is a set of pairwise noncommuting elements if xy ̸= yx for any two distinct elements x and y in x. if |x| ≥ |y | for any other set of pairwise non-commuting elements y in g, then x is said to be a maximal subset of pairwise non-commuting elements. in this paper we determine the cardinality of a maximal subset of pairwise non-commuting elements in any non-abelian...

Introduction: The discovery of high concentrations of platinum group elements (PGEs) in the uppermost clay-rich sediments of the Cretaceous (K) was the key to link the mass extinction at the CretaceousPaleogene (“K/T”) boundary to the impact of a large extraterrestrial projectile, now known to have formed the Chicxulub crater [1]. The true nature of this “Iridium anomaly” as well as of other st...

. Introduction In 1988, closely spaced samples of glacial sediments were collected around known gold mineralization in the Turquetil-Maguse Lake region of southern District of Keewatin. As part of this project, several thousand archived samples, from both detailed and regional drift sampling programs carried out between 1970 and 1975 in the same region, were reanalyzed for a wide range of eleme...

Platinum extraction from spent reforming catalysts in iodine solutions under atmospheric pressure at different temperatures, acid concentration, and iodine spices concentration, catalyst particle size, and impeller agitation speed have been studied in our group. In this system, platinum is oxidized from spent catalyst with I3¯ that is formed ...