Rheological measurements of polyethylene solutions in a novel nontoxic solvent were used to determine the Mark-Houwink parameters for PE widely different molecular weights assess viscosity average molar mass several millions g.mol−1. Solutions high density that had been previously characterized by size exclusion chromatography prepared harmless naphthenic oil. The intrinsic viscosities obtained...

The biocidal activity of the aminomethyl derivatives 2-mercaptobenzoxazole synthesized by us and being interest as potential antimicrobial additives to petroleum products cutting fluids, was studied. aminomethylation reaction proceeded with participation methylene-bis-amines. As a result, appropriate N-substituted benzoxazolin-2-thiones were obtained. Their structure proved NMR 1H. Due poor sol...

Abstract The dielectric paper of power transformers is subjected to ageing caused by high temperatures and chemical reactions in the oil. electromagnetic forces that affect conductor can cause breakage even end useful life transformer. To improve understanding those phenomena, a continuously transposed with four layers (plain Kraft crepe papers) was impregnated naphthenic oil aged during differ...

  In this study changes in fatty acids profile during frozen storage at -18°C of Cobia (Rachycentron canadum), caught from the Persian Gulf (Bandar Abbas) were studied. Changes in saturated fatty acids (SFAs), monounsaturated fatty acids (MUFAs), polyunsaturated fatty acids (PUFAs), EPA+DHA/C16, n-3 PUFA/n-6 PUFA (n-3/n-6) and polyunsaturated fatty acids /saturated fatty acids (PUFA/SFA) were i...

  In this study changes in fatty acids profile during frozen storage at -18°C of Cobia (Rachycentron canadum), caught from the Persian Gulf (Bandar Abbas) were studied. Changes in saturated fatty acids (SFAs), monounsaturated fatty acids (MUFAs), polyunsaturated fatty acids (PUFAs), EPA+DHA/C16, n-3 PUFA/n-6 PUFA (n-3/n-6) and polyunsaturated fatty acids /saturated fatty acids (PUFA/SFA) were i...