Abstract The mechanism of N-benzoyl valine oxidation by chloramine-T in hydrochloric acid medium at temperatures ranging from 308 to 328 K is the subject of this research. The findings of the experiment showed that the medium's ionic strength had an influence, as the affixing of P-toluene sulphone amide slightly retarded the reaction, and that the […]
Abstract It’s known that hydropurification process of diesel fuels leads to elimination of sulfur-, nitrogen- and oxygen-containing compounds in their composition and causes in a violation of chemical stability, compensated by the use of additives. Heteroatom-containing phenol and alkylphenol-formaldehyde oligomers are widely studied as effective multifunctional additives for fuels and oils. Imidazolinamine- modified oxyethylated nonylphenol-formaldehyde […]
Abstract In present time, there is no legal regulatory national document related to sludge management in Georgia, and the sludge removed from the treatment plant throughout the country is stored in the Wastewater Treatment Plants (WWTP) area after proper treatment (dewatering, drying). The purpose of our research was studying the limited and nutrients elements in […]
Abstract Lubricants used in technology should have sufficient protective properties to effectively protect metal parts from rust during operation, as well as during short and long-term idle stops. One of the effective ways to solve this problem is to add effective preservative (conservation) additives to lubricants, which do not adversely affect the operating properties of […]
Abstract In world practice, additives based on alkylphenols have become widespread. This distribution of alkylphenol additives is explained by a wide range of performance properties, the relative availability of raw materials and simple production technology compared to the production of other additives. Prior to 1970, alkylphenol additive production in the former Soviet Union accounted for […]
Abstract A simple, economical, and rapid method has been developed for the determination of the pharmaceutical compound (furosemide) in its pure forms and several pharmaceutical formulations using oxidative coupling reactions. This method focuses on the reaction of the drug compounds with chlorpromazine hydrochloride as a reagent in an acidic medium in the presence of the […]
Abstract The possibility of electrochemical deposition of tin‒bismuth alloy with an increased tin quota which is in demand for microassembly in electronics was revealed. Modification of the acid EDTA electrolyte with hydroxyl-containing surfactants differing in the length of hydrocarbon chain and the number of hydroxyl groups provided the deposition of Sn–Bi alloys with tin content […]
Abstract The aim of the work is the synthesis of mono- and binuclear complexes of platinum (II) and palladium (II) containing terminal and bridging atoms of chlorine and sulfur as ligands and the study of their biological activity in relation to test cultures of Bacillus subtilis B4647, Aspergillus brasiliensis (niger) F679, Pseudomonas aeruginosa B8243, Escherichia […]
Abstract Copper-tin and copper-antimony chalcogenides have received increasing attention as promising thermoelectric materials due to their high efficiency and low toxicity. Many of these phases are synthetic analogues of natural copper chalcogenide minerals and have been drawing more interest for the development of new environmentally friendly materials. In this regarding, we studied phase equilibria in […]
Abstract A series of fused heterocyclic compound triazolotetrazine were prepared from the reaction of equimolar amount of 4-amino-5-phenyl-4H-1,2,4-triazole-3-thiol via cyclization addition reaction with different aromatic aldehydes in presence of piperidine as catalyst to produce the target [1,2,4]triazolo[4,3- b][1,2,4,5] tetrazine derivatives. The synthesized compounds were characterized by spectral methods (FT-IR and 1H-NMR, 13C-NMR and mass). The […]