Reaction of [(Me3tacn)V(CF3SO3)3] (Me3tacn = N,N',N''-trimethyl-1,4,7-triazacyclononane) with LiCN in DMF results in oligomerization of cyanide to form [(Me3tacn)2V2(CN)4(mu-C4N4)]. The structure of this binuclear complex features a planar tetracyanide unit bridging two VIV centers via imido type linkages. The conjugated pathway provided by the bridging ligand leads to strong antiferromagnetic ...

Choline-O-sulfate is a compatible osmolyte accumulated under saline conditions by members of the halophytic genus Limonium and other Plumbaginaceae. A choline sulfotransferase (EC 2.8.2.6) responsible for the formation of choline-O-sulfate was characterized in Limonium species. A simple radiometric assay was developed in which [14C]choline was used as substrate, and the h [14C]choline-O-sulfate...

The primary objective of this study was to investigate the effects of cobalt (Co(2 +)), palladium (Pd(2 +)), platinum (Pt(4 +)) and vanadium (V(2 +), V(3 +), V(4 +) and V(5 +)) on the ability of the neutrophil chemoattractants C5a and IL-8, as well as the pneumococcal toxin, pneumolysin, to activate human neutrophils in vitro. Neutrophil activation was determined according to the magnitude of t...

The kinetic mechanism of lipoamide dehydrogenase has been studied at pH 8.0, 37”, using the enzyme from rat liver mitochondria. Initial velocity patterns obtained for both the forward and reverse reactions were a series of parallel lines. Michaelis constants for the reactants are: NAD, 0.52 mu; dihydrolipoamide, 0.49 mu; NADH, 0.062 mM; lipoamide, 0.84 mu. Isotopic exchange between NAD and NADH...

A nonspecific cellobiose phosphorylase from Clostridium thermocellum, which has been purified over loo-fold, is active on 10 different glucosyl acceptors, D-glucose, Z-deoxyglucose, 6-deoxyglucose, D-glucosamine, D-mannose, D-a&rose, L-galactose, L-fucose, D-arabinose, and D-xylose. Following electrophoresis on polyacrylamide gels, the activity with various acceptors occurs at the location of t...

When a superfluid flows past an obstacle, quantized vortices can be created in the wake above certain critical velocity. In experiment by Kwon et al. [Phys. Rev. A 91, 053615 (2015)], velocity ${v}_{c}$ was measured for atomic Bose-Einstein condensates (BECs) using moving repulsive Gaussian potential, and minimized when potential height ${V}_{0}$ of obstacle close to condensate chemical $\ensur...

Let $$G\cong {\mathbb {R}}^{d} \ltimes {R}}$$ be a finite-dimensional two-step nilpotent group with the multiplication $$(x,u)\cdot (y,v)\rightarrow (x+y,u+v+x^{T}Jy)$$ where J is skew-symmetric matrix satisfying degeneracy condition $$2\le \textrm{rank}\, 0}\big |\int _{\Sigma } f(x-ty, u- t x^{T}Jy) ...

Two-point composition control using the LY-configuration is examined. In spite of high steady-state RGA-values it is shown for seven example columns that the LY-configuration may yield acceptable robust performance using single-loop controllers provided measurement delays are not too large. In order to investigate the level of modelling detail that is required for effective control, five proces...

PURPOSE Dosimetric evaluations of single and multiple liver tumours performed using intensity-modulated helical tomotherapy (HT) were quantitatively investigated. Step-and-shoot intensity-modulated radiotherapy (SaS-IMRT) was used as a benchmark. METHODS Sixteen patients separated into two groups with primary hepatocellular carcinomas or metastatic liver tumours previously treated using SaS-I...

Let V V be a symplectic vector space and let alttext="mu"> μ encoding="application/x-tex">\mu</mml:annotatio...