Transesterification of (+/-)-menthol using propionic acid anhydride and Candida rugosa lipase was performed in chloroform and water at different pressures (1, 10, 50, and 100 bar) to study the pressure dependence of enantioselectivity E. As a result, E significantly decreased with increasing pressure from E = 55 (1 bar) to E = 47 (10 bar), E = 37 (50 bar), and E = 9 (100 bar). To rationalize th...

A new route to cationic complexes of Mg, Ca, Sr and Ba with 18-membered ring O4S2, O4Se2 and O2S4 donor macrocycles from metal acetonitrile complexes with weakly coordinating [BAr(F)](-) anions is described. The precursors used were [M(MeCN)x][BAr(F)]2 (M = Mg, x = 6; M = Ca, x = 8) and [M'(acacH)(MeCN)5][BAr(F)]2 (M' = Sr or Ba). Reaction of these with the heterocrowns, [18]aneO4S2 (1,4,10,13-...

Mislabeling of laboratory samples has been found to be a high-risk issue in acute care hospitals. The goal of this study was to decrease mislabeled blood specimens. In the first year after the implementation of a positive patient identification system using barcoding and computer technology, the number of labeling errors decreased from 103 to 8 per year. The outcome was clinically and statistic...

In this article, we utilise the non-relativistic potential model to calculate mass-spectra of all bottom [ $$bb][{\bar{b}}{\bar{b}}$$ ] and heavy-light $$bq][{\bar{b}}{\bar{q}}$$ (q = u,d) tetraquark states in diquark–antidiquark approximation. The four-body problem is reduced into two body by numerically solving $$Schr\ddot{o}dinger$$ equation using a Cornell-inspired along with relativistic c...

Bar coding for the medication administration step of the drug-use process is discussed. FDA will propose a rule in 2003 that would require bar-code labels on all human drugs and biologicals. Even with an FDA mandate, manufacturer procrastination and possible shifts in product availability are likely to slow progress. Such delays should not preclude health systems from adopting bar-code-enabled ...

Aims. NGC 1530 has one of the strongest bars ever observed and recent star formation sites are distributed across its bar. Our aim is to study the photometric properties of the bar and its H ii regions, to elucidate the conditions under which H ii regions form and their spatial relation to the principal dynamical features of the bar. Methods. We obtained BVRKs and Hα photometry of the H ii regi...