The prevalence, antimicrobial susceptibility, and genotypes of Streptococcus pneumoniae “putative serotype 6E” isolates from Asian countries were investigated. A total of 244 S. pneumoniae serogroup 6 isolates obtained from 11 Asian countries were included in this study. Of the 244 serogroup 6...

The purpose of the present study attempt to investigate the antioxidant and antimicrobial activities of isolated bioactive compound from ethanolic extract of Euclea crispa (E. crispa) leaves. Column chromatography method was used to isolate the bioactive compound from the plant leaves followed b...

The effects of the selective histamine H1-receptor agonist, 2-(3-trifluoromethylphenyl)histamine, were studied in rats implanted with electrodes for chronic sleep recordings. 2-(3-Trifluoromethylphenyl)histamine (80–120 μg) injected into the left lateral ventricle increased wakefulness, wherea...

The synthesis of a bipyridyl amino acid, 2-amino-3-(4′-methyl-2,2′-bipyridin-4-yl) propanoic acid, is described. A short three step synthesis from commercially available 4,4′-dimethyl-2,2′-bipyridine provides the amino acid in 65% enantiomeric excess (ee). An enzyme-mediated chiral resolutio...

The crystal structure, thermoanalytical properties, and infrared absorption spectra of Co(HSeO3)2 · 2H2O are given. The crystals of the substance are monoclinic, with space group P 21/n, a = 7.1357(6) Å, b = 6.8759(6) Å, c = 8.0325(8) Å, β = 113.19(1)°, V = 362.27(6) Å3, Z = 2, and R = 0.020 ...

Results of studies of the sorption activity of pristine and activated (with Na2CO3 solution) zeolite and a composite based on zeolite and bentonite with respect to Fe2+, Cu2+, Al3+, Pb2+ are presented. The influence of zeolite particle size, activation, and its duration on the degree of sorption...

The present research investigates the effect of aluminum ions distribution on the removal of aluminum from rare earth solutions using saponified naphthenic acid. The effect of extraction type on the extraction rate of aluminum and rare earth was studied and the results indicated that aluminum in...

Superparamagnetic iron oxide nanobrushes with different morphologies prepared using an anodic aluminum oxide Template (AAO) template. Flexible polymers and the precursor iron oxide nanoparticles coated with polyacrylic acid (PAA) were assembled into iron oxide nanobrushes. The iron oxide nanobru...

In this paper, the solubility values of potassium hexafluorosilicate (K2SiF6) were measured in phosphoric acid, nitric acid and mixed acidic aqueous solutions according to the different acidic concentrations and different temperatures of 25, 45, and 65 °C. The influence of different nitrates on...

Commercial phosphoric acid manufactured using wet process has been purified by minimizing the iron, cadmium, copper and fluoride content. Bentonite clay is found suitable for removal of humic acids and suspended materials from crude phosphoric acid. An attempt to minimize the iron content by the...

Tunisian industries process enormous quantity of green phosphoric acid. The latter contains significant amounts of rare earth elements. This work highlights the extraction of numerous rare earth elements from concentrated green phosphoric acid solutions based on core-shell graphene [email protec...

During the classical production of phosphoric acid, the reaction between sulfuric acid and phosphate rock generates suspension. The latter is subsequently filtered and concentrated by evaporation process resulting in fluorine or acid gas. In this paper, we present a new procedure of phosphoric a...

In this work, a polyethylene glycol (PEG)/Na2SO4 aqueous two phase system (ATPS) was formulated for the extraction of phosphoric acid from an aqueous solution to a polymer rich phase. The optimal conditions to form a biphasic system in the presence of phosphoric acid were determined experimental...

The manufacture of phosphoric acid by wet process, where the phosphates are solubilized by mineral acids, frequently gives a product which inevitably contains several impurities. Some of these elements are detrimental to the quality of the acid for its end uses in the fertilizers or the food ind...

A method has been developed to reduce the iron content in phosphoric acid produced by the dihydrate wet process from open cast phosphate rock of Abu-Tartur mine in Egypt. In this method, oxalic acid was used to precipitate iron as ferrous oxalate dihydrate (FeC2O4.2H2O). The achieved removal eff...

Ruthenium tetroxide was used as a reagent for the oxidation of several different coals. Significant quantities of aliphatic, di-, tri- and tetracarboxylic acids as well as benzene di-, tri-, tetra- and pentacarboxylic acids were produced in these oxidation reactions. More than 100 products have ...

BackgroundThe lactate to pyruvate (L:P) ratio is used to identify the cause of a lactic acidosis. Because tests for whole blood lactate and pyruvate require different sample types, the accuracy of the L:P ratio may be compromised by preanalytical errors. The measurement of lactate in the sample ...

Perchloric acid was used as a catalyst for the treatment of free fatty acid (FFA) in acidic crude palm oil (ACPO). Perchloric acid shows reduced the FFA content from 8.8% to 1% using 1% of acid to ACPO and the conversion of FFA to fatty acid methyl ester (FAME) was 88%. The produced biodiesel fr...

Organic molecules have been proposed as promising candidates for electrode protection in acidic electrolytes. The use of tetraphenyl-porphines (H2TPP) as graphite surface-protecting agents in sulphuric acid (H2SO4) is one of the newest. With the aim of unveiling the mechanism of such a protectiv...

Methyl 7-chloro-6,7,8-trideoxy-6-[(2S,4R)-1-methyl-4-propylpyrrolidine-2-carboxamido]-1-thio-1-threo-D-galactooctapyranoside monohydrochloride, commonly called clindamycin phosphate(CYN-P) used largely as an antibiotic for the treatment of serious infections caused by susceptible Gram-positive b...