Zobrazeno 1 - 10
of 45
pro vyhledávání: '"Mahmoud A. Hefnawy"'
Publikováno v:
Scientific Reports, Vol 14, Iss 1, Pp 1-12 (2024)
Abstract Using a trustworthy electrochemical sensor in the detection of urea in real blood samples received a great attention these days. A thin layer of nickel-coated nickel-manganese (Ni@NiMn) is electrodeposited on a glassy carbon electrode (GC) (
Externí odkaz:
https://doaj.org/article/5e2918b4fa904e438d7f97c59de9cde1
Autor:
Fowzia S. Alamro, Mahmoud A. Hefnawy, Nada S. Al-Kadhi, Ayman M. Mostafa, Mariem M. Motawea, Hoda A. Ahmed, Ali S. Alshomrany, Shymaa S. Medany
Publikováno v:
Heliyon, Vol 10, Iss 16, Pp e35791- (2024)
Nickel-iron-based spinel oxide was prepared and supported on multi-walled carbon nanotubes to enhance the electrochemical oxidation of ethylene glycol in an alkaline medium. NiFe2O4 was prepared using facile sol-gel techniques. Then the prepared mate
Externí odkaz:
https://doaj.org/article/2929479092ce40b3a2bb36d1d792aa2b
Publikováno v:
Scientific Reports, Vol 14, Iss 1, Pp 1-13 (2024)
Abstract One of the most effective electrocatalysts for electrochemical oxidation reactions is NiMn2O4 spinel oxide. Here, a 3-D porous substrate with good conductivity called carbon felt (CF) is utilized. The composite of NiMn2O4-supported carbon fe
Externí odkaz:
https://doaj.org/article/ebd1916614134d598454d7175a359caf
Publikováno v:
Scientific Reports, Vol 14, Iss 1, Pp 1-15 (2024)
Abstract The construction of highly efficient electrode material is of considerable interest, particularly for high capacitance and water-splitting applications. Herein, we present the preparation of a NiCo2O4-Chitosan (NC@Chit) nanocomposite using a
Externí odkaz:
https://doaj.org/article/8a5edb93cac04281ae3c31e9d0801610
Publikováno v:
Scientific Reports, Vol 14, Iss 1, Pp 1-14 (2024)
Abstract Calcium phosphate (CaPO4) coating is one of various methods that is used to modify the topography and the chemistry of Ti dental implant surface to solve sever oral problems that result from diseases, accidents, or even caries due to its bio
Externí odkaz:
https://doaj.org/article/fda42484b607400383ed8c0fc0073a02
Publikováno v:
Scientific Reports, Vol 13, Iss 1, Pp 1-12 (2023)
Abstract Water is essential for conserving biodiversity, ecology, and human health, but because of population growth and declining clean water supplies, wastewater must be treated to meet demand. Nitrite is one of the contaminants in wastewater that
Externí odkaz:
https://doaj.org/article/530b22595c774937be319c0ad7b3bd5c
Autor:
Ayman S. Eliwa, Mahmoud A. Hefnawy, Shymaa S. Medany, Reem G. Deghadi, Wafaa M. Hosny, Gehad G. Mohamed
Publikováno v:
Scientific Reports, Vol 13, Iss 1, Pp 1-12 (2023)
Abstract Metal organic frameworks (MOFs) are a class of porous materials characterized by robust linkages between organic ligands and metal ions. Metal–organic frameworks (MOFs) exhibit significant characteristics such as high porosity, extensive s
Externí odkaz:
https://doaj.org/article/fb095997944341dd82253a05b83bfa71
Publikováno v:
Molecules, Vol 29, Iss 6, p 1215 (2024)
The production of green hydrogen using water electrolysis is widely regarded as one of the most promising technologies. On the other hand, the oxygen evolution reaction (OER) is thermodynamically unfavorable and needs significant overpotential to pro
Externí odkaz:
https://doaj.org/article/3b9b1cc9adbf42a596a3985852cf38b9
Autor:
Ali H. Bashal, Mahmoud A. Hefnawy, Hoda A. Ahmed, Mohamed A. El-Atawy, Rami Adel Pashameah, Shymaa S. Medany
Publikováno v:
Nanomaterials, Vol 13, Iss 19, p 2643 (2023)
Energy storage applications received great attention due to environmental aspects. A green method was used to prepare a composite of nickel–iron-based spinel oxide nanoparticle@CNT. The prepared materials were characterized by different analytical
Externí odkaz:
https://doaj.org/article/a3870ff748f8455d985b5de4c6efb7c5
Autor:
Salem Youssef Mohamed, Mahmoud Tarek-Hefnawy, Samar A Amer, Bassam Mansour, Moamen Mostafa-Asla, Alejandro Piscoya, Rodrigo Mansilla-Vivar, Mohamed H. Emara
Publikováno v:
Revista de Gastroenterología del Perú. 43:20-30
Antecedentes: La endoscopia es un campo competitivo en la práctica clínica en el que los endoscopistas calificados tienen una gran demanda. El proceso de aprendizaje para los endoscopistas gastrointestinales junior (JE) es difícil, bastante largo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f4492d5a6708fdb38d58e4f52608e7fe
https://doi.org/10.47892/rgp.2023.431.1462
https://doi.org/10.47892/rgp.2023.431.1462