Výsledky vyhledávání - "SAYED, R. H."

Akademický článek

Flax fiber based semicarbazide biosorbent for removal of Cr(VI) and Alizarin Red S dye from wastewater

Autor: Magda A. Akl, Abdelrahman S. El-Zeny, Mohamed A. Hashem, El-Sayed R. H. El-Gharkawy, Aya G. Mostafa

Publikováno v: Scientific Reports, Vol 13, Iss 1, Pp 1-25 (2023)

Abstract In the present study, flax fiber based semicarbazide biosorbent was prepared in two successive steps. In the first step, flax fibers were oxidized using potassium periodate (KIO4) to yield diadehyde cellulose (DAC). Dialdehyde cellulose was,

Externí odkaz: https://doaj.org/article/9cd71e50c47f4af29ade2bf4a0596cd5

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Akademický článek

Design, structural, spectral, DFT and analytical studies of novel nano-palladium schiff base complex

Autor: Magda A. Akl, Nora A. El-Mahdy, El-Sayed R. H. El-Gharkawy

Publikováno v: Scientific Reports, Vol 12, Iss 1, Pp 1-15 (2022)

Abstract A novel nano-palladium (II) Schiff base complex (C1) is synthesized by the reaction between palladium chloride and the Schiff base N, N’-1, 2-phenylene) bis (3 -aminobenzamide (A1). The prepared compounds were characterized by elemental an

Externí odkaz: https://doaj.org/article/10aa5a6b075042d8b978d86522a880b0

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A novel cerium(iii)–isatin Schiff base complex: spectrofluorometric and DFT studies and application as a kidney biomarker for ultrasensitive detection of human creatinine

Autor: El-Sayed R. H. El-Gharkawy, Magda A. Akl, Heba E. Saad, Sheta M. Sheta

Publikováno v: RSC Advances. 10:5853-5863

In this paper, a new isatin-Schiff base L1 was prepared via a simple reaction of isatin with 2-amino-3-hydroxypyridin. Subsequently, cerium(III)-Schiff base complex C1 was obtained through the reaction of the prepared Schiff base L1 with cerium chlor

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::950995b9fda368f58d8a582f200ee4ca
https://doi.org/10.1039/c9ra10133k

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A novel nano copper complex: potentiometry, DFT and application as a cancer prostatic biomarker for the ultrasensitive detection of human PSA

Autor: El-Sayed R. H. El-Gharkawy, Nora A. El-mahdy, Magda A. Akl, Said M. El-Sheikh, Sheta M. Sheta

Publikováno v: Dalton Transactions. 49:15769-15778

Worldwide, prostate cancer is considered to be one of the three most commonly occurring cancers amongst the male population. Clinically, early detection of diverse forms of cancer before they spread and become incurable plays an important role in tre

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c879327329ccb7bb984ef16c6400ab56
https://doi.org/10.1039/d0dt03318a

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New Imidazol-1-ium Bromide Derivative Surfactants as Corrosion Inhibitors for Carbon Steel in 1 M HCl Solutions: Experimental and Theoretical Studies

Autor: M.A. Migahed, El-Sayed R. H. El-Gharkawy, S. A. Abd El-Maksoud, Mahmoud M. Gouda, Farid I. El-Dossoki

Publikováno v: Journal of Bio- and Tribo-Corrosion. 7

The inhibition properties of two imidazol-1-ium bromide compounds, namely, 1-hexyl-1-methyl-1H-imidazol-1-ium bromide and 1-dodecyl-1-methyl-1H-imidazol-1-ium bromide on the carbon steel corrosion in 1.0 MHCl were estimated using mass loss, electroch

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d8f91c5906ec940a02837701f4ba4ac4
https://doi.org/10.1007/s40735-021-00595-4

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Synthesis, Characterization and Analytical Applications of Chemically Modified Cellulose for remediation of environmental pollutants

Autor: El-Sayed R. H. El Gharkawy, Mohamed Hashem, Abdelrahman S. El-Zeny, Magda A. Akl

Publikováno v: Egyptian Journal of Chemistry.

Carbohydrazide functionalized cellulose (CH-MC) was prepared and characterized using some qualified techniques such as Scanning Electron Microscopy (SEM), Infra-Red (FT-IR), Elemental analysis (EA) and Thermogravimetric analysis(TGA) . The prepared C

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::a145a36dfde4d61527a2472fc4115f8a
https://doi.org/10.21608/ejchem.2021.65793.3412

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