Results 21 to 30 of about 6,296 (209)
Antioksidativno djelovanje metanolnih ekstrakata listova sedam egipatskih vrsta roda Cassia [PDF]
, 2010 In the present study, antioxidant activity of methanolic extracts of the leaves of seven Egyptian Cassia species was investigated using two methods, the phosphomolybdate method and 1,1 diphenyl-2-picrylhydrazyl radical (DPPH•) scavenging activity method.
EL-SAYED SALEH ABDEL-HAMEED +5 more
core +2 more sources
Spectrophotometric determination of phosphorus in coal and coal ash using bismuth-phosphomobybdate complex [PDF]
Journal of the Serbian Chemical Society, 2003 A modified spectrophotometric method using the bismuth phosphomolybdate complex for the determination of phosphorus in coal and coal ash is suggested. Bismuth together with phosphate and molybdate forms a very stable complex in acid medium which turns ...
Mihajlović Ranđel P. +4 more
doaj +1 more source
, 1981 The nitrogen of the protein precipitate is converted to acid ammonium sulphate by digestion with sulphuric acid and various catalysts. On making the reaction mixture alkaline, ammonia is liberated, which is removed by steam distillation.
Ravindranath, M H, Subhashini, M H
core +1 more source
International Journal of Electrochemical Science, 2012 Three potentiometric sensors responsive to Memantine HCl (MEM) drug are described, characterized, compared and used for drug assessment. The sensors are based on the use of the ion-association complex of (MEM) cation with Flavianate (FA), 5-Nitro ...
Rasha M. El Nashar +2 more
doaj +1 more source
Immobilization of Phosphomolybdate Anions on the Surface of Magnetite Nanoparticles Modified with Quaternary Phosphonium Cations [PDF]
Journal of Nanostructures, 2013 A new hybrid nanomaterial was developed by immobilization of phosphomolybdate anions on the surface of modified magnetite nanoparticles with quaternary phosphonium cations. Silica coated magnetic nanoparticles supported phosphonium cations, Ph3P+-SCMNPs,
M. Masteri-Farahani, R. Kamrani
doaj +1 more source
Electrochemical study of H3PMo12 retention on Vulcan carbon grafted with NH2 and OH groups [PDF]
, 2016 In this work, we show a comparative study based on the effects of specific chemical functional groups (–OH, –NH2), grafted on Vulcan carbon (VC) with the incorporation of a specific polyoxometalate (POM), PMo12 (H3PMo12O40), to improve electrochemical ...
Brousse, T. +6 more
core +2 more sources
Time- and Temperature-Varying Activation Energies: Isobutane Selective Oxidation to Methacrolein over Phosphomolybdic Acid and Copper(II) Phosphomolybdates [PDF]
Catalysts, 2016 The selective oxidation energetics of isobutane to methacrolein over phosphomolybdic acid and copper(II) phosphomolybdates have been investigated using low-pressure, pseudo-steady-state and temperature-programming techniques. Time-varying flexible least squares methods were used to determine variations in oxidation activation energies as the ...
Trevor Brown +3 more
openaire +1 more source
PolyoxometalatesThe development of a sensitive and efficient detection technology for trace toxic hexavalent chromium (Cr(VI)) in water is a pressing concern. In this study, an hourglass-type phosphomolybdate-based metal–organic network with the formula [Na0.5Cu5.5(H2O ...
Hao Song +8 more
doaj +1 more source
Identification of natural antioxidants using GC-MS analysis from Moringa oleifera with meat preservative potential [PDF]
Emirates Journal of Food and AgricultureAntioxidants play a vital role in food preservation. They ensure that food keeps its taste and color and stays edible over a longer period. In this study, the oxidative stability of Frozen beef incorporated with Moringa oleifera leaves was evaluated ...
Nadia Sardar +5 more
doaj +3 more sources
Vietnam Journal of Science, Technology and EngineeringInstant noodles are widely consumed in Vietnam and are especially popular among young people. In the production of instant noodles, phosphate additives are commonly added to enhance the crispiness and chewiness of the product.
Trung Quang Pham +3 more
doaj +1 more source