the acorn is an edible nut of oak trees (quercus spp.) that had been used for human nutrition for a long time. besides nutritious components, acorn contains considerable amounts of phenolic substances. at present study, two different varieties of iranian oak acorns, namely, q. branti var. persica (qb) and qcastaneifolia var. castaneifolia (qc) were used. the total polyphenol content measured in...

background & aim: clematis is an ornamental and medicinal plant that is primarily planted as an ornamental plant. clematis orientalis is native to asia and central europe, used as an antiseptic and refrigerant. the propagation of clematis is very important. in this study, the effects of plant growth regulators on rooting and growth of the plants in vitro culture were examined. experimental:...

the effect of magnetic field on the liquid-liquid equilibrium of two ternary systems (water + acetic acid + butyl acetate and water + acetic acid + dimethyl succinate) at 298.15 k under atmospheric pressure was investigated. the results obtained show that the strength of the magnetic field (0.02 t) affects the solubility of acetic acid in the used organic solvents. distribution coefficients and...

The bisoxazoles 1a – 1c that feature structures with two oxazole moieties connected to a 2,6pyridylene central linker and contain different aryl substituents in 4and 5-positions of the oxazole rings have been synthesized. Single-crystal X-ray structure determinations of the free ligand 1a, containing the NiCl2 complex of 1c as the CH3COOH solvate as well as the 1,4-dioxane-solvated diester inte...

background: the high percentage of consumed antibiotics by humans and animals is excreted with other residues from the body after its performance. by entering these compounds to the wastewater, they can disrupt the anaerobic treatment process. in this study, deterrent behavior of two ampicillin and gentamicin antibiotics are investigated on specific methanogenic activity (sma) of anaerobic biom...

Reaction of enaminones 1a-d with 2-aminoprop-1-ene-1,1,3-tricarbonitrile (2) in the presence of AcOH/NH₄OAc afforded 7-amino-5-oxo-5,6-dihydro-1,6-naphthyridine-8-carbonitrile derivatives 9a-d. On the other hand, 2-aminopyrano[4,3,2-de] [1,6]naphthyridine-3-carbonitriles 20a-c,e were the only obtained products from the reactions of 1a-d with 2 in the presence of AcOH/NaOAc, while 1d afforded [3...

Background:Chitosan and Calcium are one of the natural polymeric materials obtained from the exoskeleton of Xylotrupes gideon through demineralization, deproteinization and deacetylation processes. Nano chitosan and calcium can inhibit the demineralization process, which is caused by the consumption of acetic acid. This study aims to determine the effect of nano chitosan pretreatment and ...

SETO. Taste sensitivity in various strains of mice. Am. J. Physiol. 202 (6) : I 200-1204. 1g62.-The present study was designed to elucidate the differences in taste sensitivity in various strains of mice, and to study the relationship between taste sensitivity and color of the fur. Taste thresholds for four kinds of taste substance, i.e., sodium chloride, saccharine, acetic acid, and phenylthio...

In our previous papers1»2), we described the structure-activity relationships of 6-(heterocyclyl)methylene penam sulfones (1) as a new class of /3-lactamase inhibitors and proposed a mechanism of enzyme inactivation for series 1. In continuation of these studies with series 1, we pursued the closely related structures in series 2, since they should follow a similar mechanistic pathway and shoul...