The rates of tautomerization of 2-nitrocyclohexanone (2-NCH) have been measured spectrophotometrically at 25.0 +/- 0.1 degrees C in several organic aprotic solvents and their binary mixtures. In cyclohexane the reaction is effectively catalyzed by bases and inhibited by acids while the so-called "spontaneous reaction" appears essentially due to autocatalysis. Apparent second order rate constant...

A previously determined crystal structure of the ternary complex of trehalose-6-phosphate synthase identified a putative transition state-like arrangement based on validoxylamine A 6'-O-phosphate and uridine diphosphate in the active site. Here linear free energy relationships confirm that these inhibitors are synergistic transition state mimics, supporting front-face nucleophilic attack involv...

Levels of liver microsomal glucose 6-phosphatase (Reaction 1) are significantly stimulated in the diabetic or glucocorticoidtreated animal, and they are depressed after insulin administration or adrenalectomy (see, for example, References 1 to 8). This hydrolytic activity may play a physiologically significant role in the regulation of blood glucose and liver glycogen levels (1, 2, 9). Recent s...

Solute properties are known to be strongly influenced by solvent molecules due to solvation. This is due to mutual interaction as both the properties of the solute and of the solvent strongly depend on each other. The present paper is based on the idea that ionic liquids are cations solvated by anions and anions solvated by cations. To show this (in this system strongly pronounced) interaction ...

We relax the assumption of constancy of the marginal utility of income into a structural model of urban transportation with endogenous congestion. We examine the impact of unobserved heterogeneity in Marginal Utility (MU) of income on the determinants of travel by estimating the model using household survey data. We show that the value of time is no more statistically different across time slot...

The cationic [2-(2'-hydroxyphenyl)-2-oxazolinato(-2)]oxorhenium(v) complex promotes oxidative dehydrogenation of organosilanes with water and alcohols in a catalytic manner to give excellent yields of silanols and silyl ethers, respectively. The reactions proceed conveniently under ambient and open-flask conditions with low catalyst loading (<or=1 mol%). The scope of the reaction with water is ...

treatment of soils contaminated with heavy metals using plant species is a method which has been widely used in thepast. this method, which is known as phytoremediation, has been applied for pollution treatment using different plantspecies worldwide. the method has been used for remediation of various types of pollutants in laboratory, pilot andindustrial scales. the aim of this study was to co...