The role of the alloy composition binary Ni–xCr alloys (x = 16, 20, 24, 28 wt.%) and ternary Ni–xCr–8Fe 14, 22, 30 in borate buffer solution on passive transpassive behavior was investigated using successive electrochemical impedance measurements. These measurements supplement conventional polarization curves by enabling monitoring evolution parameters extracted from diagrams (thickness, resist...

In Arabidopsis the borate transporter BOR1, which is located in the plasma membrane, is degraded in the presence of excess boron by an endocytosis-mediated mechanism. A similar mechanism was suggested in rice as excess boron decreased rice borate transporter levels, although in this case whether the decrease was dependent on an increase in degradation or a decrease in protein synthesis was not ...

A method for the separation of benzoporphyrin derivative mono- and diacid (BPDMA, BPDDA) enantiomers by laser induced fluorescence-capillary electrophoresis (LIF-CE) has been developed. By using 300 mM borate buffer, pH 9.2, 25 mM sodium cholate and 10% acetronitrile as electrolyte, +10 kV electrokinetic sampling injection of 2 s and an applied +20 kV voltage across the ends of a 37 cm capillar...

For the first time, we give a fundamental understanding of the effect of borate-modified nanodiamond on propane oxidative dehydrogenation reaction. Upon increasing the loading amount of borate on the carbon surface, the propene selectivity shows a volcanic curve. The adsorption sites of borate at different loading amounts are thoroughly considered.

Since the early work on uricase carried out by Schittenhelm (l), Wiechowski (a), and Battelli and Stern (3), and t,he elucidation of the structure of uric acid by the work of Behrend and Roosen (4), Fischer (5), and Biltz (6), the chemical nature of the intermediates and end-products of uricase action has been uncertain. The first indications of the structure of a possible intermediate were off...

A number of new charge-neutral zwitterionic tris(methimazolyl)borate ligands have been synthesized, either by substitution of the dimethylamine group in the adduct (dimethylamine)tris(methimazolyl)borane (1) or by insertion into its B-N(dimethylamine) bond by an unsaturated Lewis base. Two new anionic ligands, (thiocyanato)tris(methimazolyl)borate and (cyano)tris(methimazolyl)borate, have also ...

The water splitting reaction represents an appealing approach to store solar energy. 4e−/4H+ oxidation of generating O2 is considered as the bottleneck in this and usually requires a rather large over potential. We report on synthesis application binuclear cobalt(III) complex, 1, with two μ-OH ligands tripodal triazole ligands, L, electrochemical (WOR; L=tris((1-phenyl-1H-1,2,3-triazol-4-yl)met...

The abiotic origin of genetic polymers faces two major problems: a prebiotically plausible polymerization mechanism and the maintenance of their polymerized state outside a cellular environment. The stabilizing action of borate on ribose having been reported, we have explored the possibility that borate minerals stabilize RNA. We observe that borate itself does not stabilize RNA. The analysis o...

The donor properties of a series of tripodal mixed N-donor/carbene ligands derived through sequential alkylation of hydrotris(1,2,4-triazolyl)borate have been investigated by density functional theory (DFT) methods. The structures of complexes of the form [Mo(L)(CO)3] were optimized (L = [HB(1,2,4triazolyl)n(1,2,4-triazol-5-ylidene)3-n] (n = 0 – 3), hydrotris(pyrazolyl)borate, hydrotris(3,5dime...

Chloramine-T and sodium borate solutions were evaluated for their effectiveness in preserving Mycobacterium bovis and controlling the growth of non-mycobacterial contaminants on tissue specimens during transport to laboratories. The number of culturable M. bovis cells in suspension was reduced by 5.1 log10 upon exposure to chloramine-T solution and by less than 1 log10 upon exposure to sodium b...