Zobrazeno 1 - 10 of 142 pro vyhledávání: '"S. A. El-Khateeb"'
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Akademický článek
Ni ions doped oxyflourophosphate glass as a triple ultraviolet–visible–near infrared broad bandpass optical filter
Autor: W. A. Abu-raia, D. A. Aloraini, S. A. El-Khateeb, Aly Saeed
Publikováno v: Scientific Reports, Vol 12, Iss 1, Pp 1-12 (2022)
Abstract Research and development R&D about new materials that can be used as an optical filter, shortpass, bandpass, and longpass is still ongoing. So, in this context, the 50P2O5–20ZnF2–15MgF2–15PbF2 doped different concentrations of NiO rang
Externí odkaz: https://doaj.org/article/d3edadfcc3dd4b75a64b311a582309ae
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4
Development of membrane electrodes for the selective determination of hyoscine butylbromide
Autor: S. Z. El-khateeb, Mohamed I Refaat, Yasser S. El-Saharty, F.H. Metwaly
Publikováno v: Talanta. 72:675-681
Four polyvinyl chloride (PVC) membrane sensors for the determination of hyoscine butylbromide are described and characterized. The sensors are based on the use of the ion association complexes of hyoscine cation with ammonium reineckate counter anion
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7a818033464d69b755fa363d33f35a66
https://doi.org/10.1016/j.talanta.2006.11.040
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Application of Derivative, Derivative Ratio, and Multivariate Spectral Analysis and Thin-Layer Chomatography-Densitometry for Determination of a Ternary Mixture Containing Drotaverine Hydrochloride, Caffeine, and Paracetamol
Autor: Mohamed I Refaat, Fadia H Metwally, Yasser S. El-Saharty, S. Z. El-khateeb
Publikováno v: Journal of AOAC INTERNATIONAL. 90:391-404
New selective, precise, and accurate methods are described for the determination of a ternary mixture containing drotaverine hydrochloride (I), caffeine (II), and paracetamol (III). The first method uses the first (D1) and third (D3) derivative spect
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::632335976b274951fe8badfe1a6e0d47
https://doi.org/10.1093/jaoac/90.2.391
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6
Simultaneous Determination of Hyoscine Butylbromide and Ketoprofen in Pharmaceutical Preparations by Spectrophotometric and Liquid Chromatographic Methods
Autor: Yasser S. El-Saharty, Mohamed I Refaat, S. Z. El-khateeb, Fadia H Metwally
Publikováno v: Journal of AOAC INTERNATIONAL. 90:102-112
A binary mixture of hyoscine butylbromide and ketoprofen was determined by 4 different methods. The first involved determination of hyoscine butylbromide and ketoprofen using the ratio-spectra first-derivative spectrophotometric technique at 211 and
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::40caa3487cdbbbf656190e6afd572168
https://doi.org/10.1093/jaoac/90.1.102
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7
SPECTROPHOTOMETRIC AND STABILITY INDICATING HIGH PERFORMANCE LIQUID CHROMATOGRAPHIC DETERMINATION OF NORTRIPTYLINE HYDROCHLORIDE AND FLUPHENAZINE HYDROCHLORIDE
Autor: Nariman A. El-Ragehy, Samah S. Abbas, S. Z. El-khateeb
Publikováno v: Analytical Letters. 35:1171-1191
Spectrophotometric and high performance liquid chromatographic procedures are described for determination of nortriptyline hydrochloride and fluphenazine hydrochloride. The first procedure is based on application of first derivative of ratio spectra
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::395582457611f340f383d3d73c1f2ce4
https://doi.org/10.1081/al-120005971
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8
Stability indicating methods for assay of mequitazine in presence of its degradate
Autor: S. Z. El Khateeb, Nariman A. El-Ragehy, A.M Badawey
Publikováno v: Journal of Pharmaceutical and Biomedical Analysis. 29:121-137
Six procedures have been suggested for the determination of the antihistaminic agent, mequitazine, in the presence of its degradate. Mequitazine, having a phenothiazine group, undergoes peroxide oxidation and the corresponding sulphone is produced. I
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c8e3ed3b55816a919347e53011e79e72
https://doi.org/10.1016/s0731-7085(02)00038-9
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9
Stability indicating methods for the determination of loratadine in the presence of its degradation product
Autor: A.M Badawey, S. Z. El Khateeb, N. A. El Ragehy
Publikováno v: Journal of Pharmaceutical and Biomedical Analysis. 28:1041-1053
Four stability-indicating procedures have been suggested for determination of the non sedating antihistaminic agent loratadine. Loratadine being an ester undergoes alkaline hydrolysis and the corresponding acid derivative is produced as a degradation
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::29898590ce997bfb056e7c91e7e72446
https://doi.org/10.1016/s0731-7085(01)00664-1
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10
Stability indicating spectrophotometric methods for determination of glafenine using first derivative of ratio spectra and chemometric techniques
Autor: Nariman A. El-Ragehy, Samah S. Abbas, S. Z. El-khateeb
Publikováno v: Analytica Chimica Acta. 461:155-168
Spectrophotometric stability indicating procedures are described for determination of glafenine in pure and dosage forms. First derivative of ratio spectra ( 1 DD ) and multivariate calibration chemometric methods are proposed for determination of gl
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::708465abdeb29fb991ac1106be3502cb
https://doi.org/10.1016/s0003-2670(02)00232-5
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