The presented study describes the solvent extraction process of Zn(II) and Pb(II) from aqueous solutions by a cation exchanger extractant named bis(2-ethylhexyl)phosphoric acid (DEHPA). The results confirm that both of the extraction efficiency and extraction selectivity depend on the employed organic diluent. The applied extractant was selective towards zinc ions; this selectivity did not depe...

Polyethylene glycol (PEG) is a hydrophilic polymer, known to be capable to fuse numerous single cells in vitro, to join the membranes of adjacent neurons and giant invertebrate axons, and to seal damaged neural membranes. The molecular mechanism of the action of PEG is still unknown. It is believed that PEG dehydrates membranes and enables their structural components to resolve and rearrange in...

Adv. Funct. Mater. 2021, 31, 2008515 DOI: 10.1002/adfm.202008515 In the originally published version of this article, histological staining images Col X in PEGS/10PAA group and PEGS/30PAA at 21 days demonstrated Figure 4F were inadvertently misplaced. The corrected is shown below. This correction does not alter findings or conclusion study. authors would like to apologise for any inconvenience ...

In this we paper we consider the version of the classical Towers of Hanoi games where the game-board contains more than three pegs. For k pegs we give a 2k 1/(k−2) lower bound on the number of steps necessary for transferring n disks from one peg to another. Apart from the value of the constants Ck this bound is tight.

The Perceived Efficacy and Goal Setting System (PEGS) is an instrument and a process that enables children with disabilities to reflect on their ability to perform everyday occupations and to identify goals for occupational therapy intervention. In this study, 117 children with disabilities in grades 1-3 completed the PEGS with occupational therapists who work in school settings. Children from ...

Between1962 and1966ClaudeBerge edited a series of columns that appeared in theRevueFrançaise deRechercheOpérationnelle, entitledProblèmes plaisans et délectables, in homage of the 17th centurywork of Bachet. Each of these columns gives a newproblem, along with solutions for earlier problems supplied by readers. The last of these columns contains a sorting problem, problem 41, in which we are gi...

Defining Talent Let’s define talent as a combination of three things what we know via training, education and experience, what we like to do, and what we can handle in terms of complexity, and then, let’s define jobs in the same way what you must know, what you must do, and what level of complexity is involved. Once this is done, we can easily put round pegs in round holes, square pegs in squar...