The vanadyl(IV) adenine complex; [VO(Adn)2]⋅SO4; was synthesized and characterized. The molar conductivity of this complex was measured in DMSO solution that showed an electrolyte nature. Spectroscopic investigation of the green solid complex studied here indicate that the adenine acts as a bide...

A series of chiral and achiral neutral vanadyl complexes with N-heterocycle chelated ligands [V2O2(S-lact)2(bpy)2] (1), [V2O2(S-lact)2(phen)2] (2), [V2O2(R-lact)(S-lact)(bpy)2] (3), [V2O2(R-lact)(S-lact)(phen)2] (4) (H2lact = lactic acid, phen = 1,10-phenanthroline, and bpy = 2,2′-bipyridine) h...

The loss of the modulator role of the endothelium could be involved in the pathogenesis of diabetic vascular complications. Transition metal compounds, such as tungsten and vanadium, have been proposed as possible agents in the treatment of diabetes by simulating the effects of insulin. The mese...

Novel tetranuclear vanadyl glycollates [Ni(phen)3]2[VIV4O4(glyc)6]·23H2O (1) and [Ni(phen)3]2[VIV4O4(glyc)6]·16H2O (2) have been obtained through the capture of bulky nickel phenanthroline cation (H2glyc = glycollic acid, phen = 1,10-phenanthroline), and the mixed-ligand complex [VIV4O6(glyc)2...

Unlike the most of α-alkoxy coordination in α-hydroxycarboxylates to vanadium, novel α-hydroxy coordination to vanadium(IV) has been observed for a series of chiral and achiral monomeric α-hydroxycarboxylato vanadyl complexes [VO(H2cit)(bpy)]·2H2O (1), [VO(Hmal)(bpy)]·H2O (2), [VO(H2cit)(p...

In this work we discuss the theoretical photo-double ionization spectrum of iodomethane which was obtained by the newly developed relativistic two-particle propagator and compare it to experimental data. For a correct interpretation of the spectral features in the outer valence region, spin–orb...

The feasibility of employing chemical methods for enhancement of cellulose-based materials is dependent on the availability, price, and green index of the modifying agent. This study details the use of iodomethane, an inexpensive organo halide, to increase the hydrophobicity of thermo mechanical...

The nucleation kinetics of ammonium metavanadate (NH4VO3) was investigated under conditions of the simulated process for precipitation of NH4VO3 from the vanadium-containing solution. Induction periods for the nucleation of NH4VO3 were experimentally determined as a function of supersaturation a...

d,l-α-Fluoropalmitic acid was synthesized by tosylation of methyI-d,l-α-hydroxypalmitate, and displacement of the tosylated function by tetrabutylammonium fluoride in acetonitrile. Uptake and utilization of the compound by cultured Balb/c 3T3 cells were studied after presentation of the fluoro...

Several monofluorinated fatty acids, structurally related to palmitic acid, have been synthesized and fully characterized for the first time and assayed as inhibitors of the β-oxidation step, in the proposed biosynthesis of the sex pheromone of the Egyptian armyworm Spodoptera littoralis. Silve...

The high-yielding and easily scalable synthesis of a number of benzoic acids bearing a tertiary alkylamino functionality has been achieved. The flexible synthesis began from readily available aminobenzoic acids or terephthaloyl chloride and requires almost no chromatography. Coupling of the synt...

The vapour pressures of the condensed phases of the methyl esters of p-halobenzoic acids were measured over wide temperature ranges. The results enabled the determination of the standard molar entropies and enthalpies of sublimation and of vapourisation, at T = 298.15 K, of these four compounds....

Photophysical properties of methyl ester of 2,6-dimethyl-1-amino-4-benzoic acid (M26DMB) have been investigated using steady state absorption and emission spectroscopy and time-resolved emission spectroscopy. Interestingly, not only in polar solvents, the molecule M26DMB having a weak primary am...

Myeloperoxidase (MPO) catalyzes the breakdown of hydrogen peroxide and the formation of the potent oxidant hypochlorous acid. We present the application of the fluorogenic peroxidase substrate 10-acetyl-3,7-dihydroxyphenoxazine (ADHP) in steady-state and transient kinetic studies of MPO function...

A static method based on capacitance gauges was used to measure the vapor pressures of the condensed phases of the methyl esters of the three aminobenzoic acids. For methyl o-aminobenzoate the vapor pressures of the liquid phase were measured in the range (285.4 to 369.5) K. For the meta and par...

Myeloperoxidase (MPO) is expressed by myeloid cells for the purpose of catalyzing the formation of hypochlorous acid, from chloride ions and reaction with a hydrogen peroxide-charged heme covalently bound to the enzyme. Most peroxidase enzymes both plant and mammalian are inhibited by benzoic ac...

The adsorption reactions of arsenate with ferric hydroxide minerals and amorphous ferric hydroxide play an important role in affecting the transport and fate of arsenate in the environment. Previous studies have investigated formation of mono- and bidentate complexes between arsenate and ferric ...

Arsenic (As) contamination in agricultural soil can cause phytotoxicity and lead to As accumulation in crops. Rice (Oryza sativa) feeds half of the world’s population, but the molecular mechanism of As detoxification is not well understood in rice. In this study, the role of OsNLA1 in arsenate ...

Natural filtration material tuff (T) was modified by coating with nano-sized magnetite. The grain fraction of 0.6–1.9 mm was submitted to hydrothermal synthesis of magnetite. Thus formed magnetite modified tuff (MMT) was characterized in terms of Fe-content, N2 adsorption- desorption isotherm, ...

Microbial populations from soil contaminated with oil-brine were examined for their response to two-dimensional gradients of NaCl (10–25%) and sodium p-toluate (0–10 mM) in a diffusion gradient chamber (DGC). In the DGC, growth of cells in the mixed population began at the lowest concentration...