تصفح حسب المؤلف "Migahed, M. A."
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Azo-Hydrazo Tautomerism: Further Evidence Based On Polarographic Reduction And Acidity Function Of Some Heterocyclic Compounds Containing Oximino-Group
Helmy, Ahlam M. A. [احلام عباس حلمي]; El-Shafei, Alaa; Migahed, M. A.; Morsi, M. A. ( Qatar University , 1994 , Article)Potentiometric pKa and polarographic behaviour of l,3-indandione-monoxime-2-phenyl azo and four of its substituted derivatives were investigated in buffer solution of pH -2-12. The results showed that the compounds are in ... -
Electrochemical behaviour of some pyrimidine derivatives: polarographic reduction of 1, 3-dimethyl-2, 4, 6(1h, 3h, 5h) pyrimidinetrione and its substituted 5-phenylazo
Helmy, Ahlam M. A. [احلام عباس حلمي]; Migahed, M. A.; Morsi, M. A. ( Qatar University , 1994 , Article)The polarographic behaviour and spectrophotometric pKa of 1,3-dimethyl barbituric acid and 5-phenylazo substituted products were investigated in buffer solution of pH ~ 2-11. The results revealed an azo form of the substituted ... -
Synthesis of Gemini cationic surfactants based on natural nicotinic acid and evaluation of their inhibition performance at C-steel/1 M HCl interface: Electrochemical and computational investigations
Elaraby, A.; Elgendy, Amr; Abd-El-Raouf, M.; Migahed, M. A.; El-Tabei, A. S.; Abdullah, Aboubakr M.; Al-Qahtani, Noora H.; Alharbi, Sami M.; Shaban, Samy M.; Kim, Dong‑Hwan H.; El Basiony, N. M.... more authors ... less authors ( Elsevier , 2023 , Article)Herein, we prepare effective Gemini cationic surfactants (CSII, CSIV) and characterize them using FT-IR and 1HNMR spectroscopy. The adsorptive properties of CSII and CSIV at HCl/air and C-steel/HCl interfaces were examined ...