Results 31 to 40 of about 1,070 (212)
Environmentally friendly regeneration of used energy oils [PDF]
E3S Web of Conferences, 2023 The article covers the problem of regeneration of used petroleum oils, i.e., transformer, turbine and compressor oils in order to restore their physical and chemical properties and return them for their reuse for their intended purpose.
Aliev Abror +4 more
doaj +1 more source
A NEW IONOL GLUCOSIDE FROM MAERUA CRASSIFOLIA FORSSK GROWN IN EGYPT [PDF]
Bulletin of Pharmaceutical Sciences. Assiut University, 1995 A new ionol glucoside was isolated from the polar fraction of the methanolic extract of the aerial parts of M. crassifolia Forssk upon repeated column chromatography, together with quercetin 3-O-b-D-galactopyranoside.
Zedan Ibraheim
doaj +1 more source
Effect of ionol extraction temperature onto its gas chromatographic detection at transformer oil
Trudy Odesskogo Politehničeskogo Universiteta, 2014 The gas chromatography used for detecting antioxidizing additive ionol at transformer oil presence helps to ensure reliable operation of oil-filled electrical equipment.
Сергій Володимирович Зайцев
doaj +4 more sources
Molecules, 2021 Croton hirtus L’Hér methanol extract was studied by NMR and two different LC-DAD-MSn using electrospray (ESI) and atmospheric pressure chemical ionization (APCI) sources to obtain a quali-quantitative fingerprint.
Stefano Dall’Acqua +7 more
doaj +1 more source
Reactive oxygen forms and Ca ions as possible intermediaries under the induction of heat resistance of plant cells by jasmonic acid [PDF]
The Ukrainian Biochemical Journal, 2013 The participation of reactive oxygen species (ROS) and calcium ions in realization of influence of exogenous jasmonic acid (JA) on the heat resistance of wheat coleoptiles has been investigated. Influence of 1 µM JA caused the transitional intensifying
Yu. V. Karpets +6 more
doaj +1 more source
Известия высших учебных заведений: Проблемы энергетики, 2021 THE PURPUSE. The paper considers the influence of the nature of organic solvents on the process of separation of an antioxidant additive added to transformer oil at a concentration of up to 0.40% by weight, and organic solvents used as selective ...
Duy Hung Nguyen +3 more
doaj +1 more source
Avaliação do Uso dos Antioxidantes Comerciais BHT e IONOL na Estabilidade Oxidativa de Sebo Bovino
Conexões: Ciência e Tecnologia, 2017 O sebo bovino é a segunda maior fonte lipídica para produção de biodiesel no Brasil. Contudo, problemas relacionados à rancificação hidrolítica e oxidativa do sebo, os quais ocorrem em geral na armazenagem deste insumo, podem comprometer a produção e a ...
Maurício Nunes Kleinberg +4 more
doaj +1 more source
, 2016 In a previous paper, we described the isolation of four new sesterterpenes from Cydonia vulgaris Pers. Here we report the isolation of four new flavonol glycosides (1−4) and nine new α-ionol-derived glycosides (5−13) together with the known 3-oxo-α ...
Sonia Piacente (536174) +3 more
core +1 more source
Dehydration studies of α- and β-ionol. I. With hexamethylphosphoric triamide
, 1982 α-Ionol (2) when heated under reflux with hexamethylphosphoric triamide gave principally one product (1'E)-6-(buta-1',3'-dienyl)-1,5,5-trimethylcyclohex-1-ene (4a) together with trace quantities of the (1'Z)-isomer (4b). Under similar conditions β-ionol (
G Sugowdz, FB Whitfield
core +1 more source
SPE Polymers, Volume 7, Issue 4, October 2026.Novel MA–St–CPMI terpolymers were synthesized by free‐radical terpolymerization. Positional isomerism significantly influenced their thermal stability, antioxidant efficiency, and antibacterial activity, highlighting their potential as multifunctional polymeric materials. ABSTRACT Novel multifunctional maleic anhydride–styrene–N‐carboxyphenylmaleimide (
Shahana Guliyeva +7 more
wiley +1 more source