Zobrazeno 1 - 10
of 351
pro vyhledávání: '"G.H. Sedahmed"'
Publikováno v:
Alexandria Engineering Journal, Vol 59, Iss 1, Pp 509-518 (2020)
The effect of impeller geometry on the rate of liquid-solid mass transfer at the wall of the stirred tank reactor was studied by measuring the rate of the diffusion-controlled disintegration of copper in acidified dichromate. Factors examined were ro
Externí odkaz:
https://doaj.org/article/98c9948c4ae142408dd0880c1cefafb1
Publikováno v:
Experimental Heat Transfer. 35:964-978
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4703e872b3e76e536a83f17b98fbd190
https://doi.org/10.1080/08916152.2021.1996485
https://doi.org/10.1080/08916152.2021.1996485
Publikováno v:
Transactions of the IMF. 99:210-214
To contribute to quantifying the process of electropolishing, the rates of electropolishing of a horizontal cylinder with active ends were studied under natural convection by measuring the limiting...
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::eb105544483317e4177e5bef229e252c
https://doi.org/10.1080/00202967.2021.1892961
https://doi.org/10.1080/00202967.2021.1892961
Publikováno v:
Surface Engineering and Applied Electrochemistry. 57:217-221
Rates of mass transfer during electropolishing of conical copper cavities were studied by measuring the limiting current of anodic dissolution of copper in phosphoric acid. Parameters studied were physical properties of the solution and dimensions of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::515e5182320b49a7954398c2a94f0e4a
https://doi.org/10.3103/s1068375521020034
https://doi.org/10.3103/s1068375521020034
Autor:
A. A. Zatout, G.H. Sedahmed, T.M. Zewail, B. S. Ibrahim, Mohamed Helmy Abdel-Aziz, E.-S. Z. El-Ashtoukhy
Publikováno v:
Mining, Metallurgy & Exploration. 38:1203-1213
In this work, the possibility of intensifying the cementation process in stirred vessels was studied by using the perforated baffles as turbulence promoters; the cementation reaction of Cu+2 on Zn was selected as a model. Zn was used in the form of a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::720a7f1f2985a4f88e24b15ec28b001d
https://doi.org/10.1007/s42461-020-00375-7
https://doi.org/10.1007/s42461-020-00375-7
Autor:
Ahmed Hassan El-Shazly, Y.A. El-Taweel, M. S. Mansour, M. A. El-Naggar, G.H. Sedahmed, Mohamed Helmy Abdel-Aziz, S.A. Nosier
Publikováno v:
Experimental Heat Transfer. 35:99-112
Rates of mass and heat transfer (by analogy) at the surface of a helical coil imbedded in a fixed bed of inert cylindrical packing were measured under upward two-phase (gas-liquid) flow by the elec...
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5c3af02c2abd8d5cde0c2dca68509955
https://doi.org/10.1080/08916152.2020.1818887
https://doi.org/10.1080/08916152.2020.1818887
Autor:
S.A. Nosier, Y. M. Youssef, Ibrahim Hassan, Hassan A. Farag, N. M. Ahmed, Mohamed Helmy Abdel-Aziz, G.H. Sedahmed
Publikováno v:
Chemical Papers. 74:3947-3956
In this work, an annulus-type recirculated batch reactor is designed to study the influence of different process parameters on the corrosion rate of metals under diffusion-controlled conditions. The effect of solution flow rate (for both laminar and
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1c93824676ffea10d4a100e8d3ae7442
https://doi.org/10.1007/s11696-020-01213-2
https://doi.org/10.1007/s11696-020-01213-2
Publikováno v:
Experimental Heat Transfer. 34:240-250
Rates of mass transfer in a spiral coil were measured by a technique involving the diffusion-controlled dissolution of copper in acidified dichromate. The variables studied were solution velocity, ...
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::14a9762cf96a9d00b1f9e5496384b226
https://doi.org/10.1080/08916152.2020.1739782
https://doi.org/10.1080/08916152.2020.1739782
Autor:
M. A. El-Naggar, E. G. Abdel-Aziz, S.A. Nosier, Mohamed Helmy Abdel-Aziz, G.H. Sedahmed, Ashraf A. Mubarak
Publikováno v:
Mining, Metallurgy & Exploration. 37:453-458
The performance of a rotating fixed bed reactor in recovering copper from industrial waste solutions by cementation is studied under various conditions. The rotating fixed bed is made of stacked woven steel screens to take advantage of two features o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d50e9d83494d7d8dae40956791e0088f
https://doi.org/10.1007/s42461-020-00191-z
https://doi.org/10.1007/s42461-020-00191-z
Autor:
G.H. Sedahmed, M. Sh. Zoromba, Mohamed Bassyouni, E.-S. Z. El-Ashtoukhy, Mohamed Helmy Abdel-Aziz
Publikováno v:
Journal of Industrial and Engineering Chemistry. 82:105-112
In this work, removal of nitrates by electrocoagulation in a batch electrochemical cell with horizontally oriented electrodes was studied, the anode was a horizontal Al serpentine tube whose inner surface can potentially act as a built-in cooler to c
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::52ec31ac064dc5771a950d98bc32c118
https://doi.org/10.1016/j.jiec.2019.10.001
https://doi.org/10.1016/j.jiec.2019.10.001