This study investigated the influences of cetyltrimethyl trimethyl ammonium chloride (CTAC), an emerging pollutant quaternary ammonium compound (QAC) in municipal effluents, on the transfer and uptake of NH4+ by Chlorella vulgaris F1068 cells removed EPS artificially (EPS-R) and coated EPS natur...

Ore samples contain a variety of copper-bearing and gangue minerals that affect the leach kinetics. The kinetic behaviour of a natural ore sample (that contained 48.7% bornite and 15.8% chalcopyrite) in a solution of methanesulfonic acid and ferric chloride was studied. The dependence of the rea...

Diosgenin is an important raw material for the synthesis of steroid hormone drug and largely required in the pharmaceutical industry. In this study, a novel process for biorefinery of Dioscorea composita Hemsl (DCH) with ferric chloride was developed to investigate the conversion of saponins to ...

A circulatory hydrometallurgical process: ferric trichloride (FeCl3) leaching of antimony sulfide (Sb2S3) (production of Sb by replacing it with iron) followed by membrane electrowinning of ferrous chloride (FeCl2), was developed to cleanly extract Sb from stibnite. First, Sb was leached (leachi...

Reaction of 2,4,6-trialkylglycolurils with epichlorohydrin under phase-transfer conditions affords the title compounds as diastereomeric mixtures.

The molecular mechanism of the graft reaction of 2,3-epoxypropyl-trimethyl quaternary ammonium chloride with chitosan monomer was investigated by performing density functional theory (DFT) calculations. The calculated results show that the −NH2 group of chitosan monomer is more reactive than its...

High pressure phase behavior of the CO2 + 2-ethoxyethyl methacrylate (2-EEMA) and CO2 + 2,3-epoxypropyl methacrylate (2,3-EPMA) systems has been investigated in static method at five temperatures of 313.2, 333.2, 353.2, 373.2 and 393.2 K and pressures up to 21.3 MPa. Both CO2 + 2-EEMA and CO2 + ...

Poly(glycidyl methacrylate-co-ethylene dimethacrylate) (poly(GMA-co-EDMA)) is most frequently used as parent monolith to obtain stationary phases with a variety of surface chemistries for liquid chromatography and capillary electrochromatography. Functionalization is performed by opening the acc...

Hexakis(2,3-epoxypropyl)cyclotriphosphazene was employed for preparation of high − solid hybrid organic-inorganic poly(urethane-cyclophosphazene) coatings based on epoxy-terminated urethane oligomer which were cured with ethylenediamine. The flame retardancy, thermal degradation behavior and som...

The solubility of ornidazole in different solvents (methanol, ethanol, 1-propanol, 1-butanol, isopropyl alcohol and ethyl acetate) has been determined using a gravimetric method over different temperature ranges (298.15 K to 328.15 K) at one atmospheric pressure. Further, various thermodynamic p...

Molecular self-assembly of biodegradable amphiphilic polymers allows rational design of biocompatible nanomaterials for drug delivery. Use of substituted polysaccharides for such applications offers the ease of design and synthesis, and provides higher biofunctionality and biocompatibility to na...

This is the preliminary study of the sedative and muscle relaxation activity of ornidazole enantiomers, which are widely used in the treatment of susceptible protozoal infections and anaerobic bacterial infections. Adverse effects on the central nervous system (CNS) are the main side effects of ...

A luminescence nanosensor has been developed for analysis of Ornidazole in biological samples using graphene-quantum-dot-embedded silica molecular imprinted polymer (GQD-SMIP) as a selective probe for this analyte. The GQD-SMIP was found to possess a strong fluorescent emission at 450 nm upon ex...

Excellent antibacterial property of graphene oxide makes it an important antibacterial material. However, in some cases, a synergistic combination of materials with different antibacterial mechanisms is desired. In this work, we developed a simple two-step protocol to prepare ornidazole (ONZ), a...

Direct pulp capping is an alternative treatment for dental pulp injuries caused by decay, trauma, or cavity preparation. Ornidazole is an antibiotic that is commonly used to treat dental infections against anaerobic bacteria. The purpose of this study was to examine the feasibility of using orni...

A novel spectrofluorimetric method for the determination of ornidazole (ORN) in pure form and dosage forms was developed based on the influence of ORN on the native fluorescence of bovine serum albumin (BSA) in a stimulated physiological environment. The obtained data reveal that the presence of...

The selective reduction of the aldehyde groups of (−)-cinnamodial (1) was investigated. In this way a partial synthesis of (−)-pereniporin A (2) was achieved, as well as that of the triol 3, previously obtained from (+)-uvidin A (4).

Methyl 14,15-dinor-13-oxo-7-labden-15-oate was obtained from acid zamoranic acid methyl ester. The former by photochemical cleavage yielded methyl 7,9(11)-drimadien-12-oate, whose chemoselective epoxidation afforded methyl 9α,11-epoxy-7-drimen-12-oate, which is the key synthetic precursor for p...

Enantioselective syntheses of (+)-fragolide and (−)-pereniporin B are detailed. Marino's lactone annulation method was employed to establish relative and absolute stereochemistry at carbon in the bicyclization substrate. Regio- and stereoselective oxidations of tricyclic drimane precursors ...

Novel N-hydroxyalkyl-2-aminophenothiazines implying a tetrazole moiety at the alkyl chain have been synthesized by hydroboration–oxidation of dienes followed by Buchwald–Hartwig cross-coupling reaction. Also, some sulfoxide and sulfone derivatives have been prepared by selective oxidations. MD...