An approach to select an energy-efficient shading device for the south-oriented façades in heritage buildings in Alexandria, Egypt

Research Authors
Rehab M Ahmad, Zeyad El-Sayad, Dina Taha, Hassan Shokry, Hatem Mahmoud
Research Date
Research Department
Architecture Engineering Department
Research Journal
Energy Reports
Research Member
Rehab Mohammad Ismail Ahmad
Research Publisher
Elsevier
Research Rank
Q2
Research Vol
7
Research Website
https://www.sciencedirect.com/science/article/pii/S2352484721003887
Research Year
2021

Determination of optimal energy-efficient integrated daylighting systems into building windows

Research Authors
Rabee M Reffat, Rehab M Ahmad
Research Date
Research Department
Architecture Engineering Department
Research Journal
Solar Energy
Research Member
Rehab Mohammad Ismail Ahmad
Rabee M. Reffat
Research Publisher
Elsevier
Research Rank
Q1
Research Vol
209
Research Website
https://www.sciencedirect.com/science/article/pii/S0038092X20309270
Research Year
2020

An approach to achieve thermal comfort and save energy in heritage buildings using different operating patterns

Research Authors
Rehab M Ahmad, Zeyad El-Sayad, Dina Taha, Hassan Fath, Hatem Mahmoud
Research Date
Research Department
Architecture Engineering Department
Research Journal
International Journal of Energy Production and Management
Research Member
Rehab Mohammad Ismail Ahmad
Research Publisher
Ural Federal University , WIT Press
Research Rank
Q3
Research Vol
5
Research Website
https://elar.urfu.ru/handle/10995/94583
Research Year
2020

A comparative study of various daylighting systems in office buildings for improving energy efficiency in Egypt

Research Authors
Rehab M Ahmad, Rabee M Reffat
Research Date
Research Department
Architecture Engineering Department
Research Journal
Journal of Building Engineering
Research Member
Rehab Mohammad Ismail Ahmad
Rabee M. Reffat
Research Publisher
Elsevier
Research Rank
Q1
Research Vol
18
Research Website
https://www.sciencedirect.com/science/article/pii/S2352710217304138
Research Year
2018

Effect of ultrasonication time on the performance of carbon black water nanofluid in solar absorption

Research Abstract

This research reveals an innovative way of finding the ultimate time of ultrasonication that offers photothermal capability across carbon black (CB) water nanofluids, a great contribution to the field of solar energy absorption and nanofluid technology. The samples were generated using a two-step procedure with varying ultrasonication periods employed, ranging from 15 to 120 minutes, in concentrations of 0.005 wt% CB nanoparticles and 0.005 wt% sodium dodecyl sulfate (SDS) surfactant. Thirty days after preparation visible observation and UV spectroscopy, scanning electron microscopy (SEM) images, and particle size distribution were used to confirm the samples’ stability. The stability properties results demonstrated the beneficial effects of ultrasonication on the dispersion properties of nanofluids. Ultrasonication of less than 30 minutes resulted in the early sedimentation of nanoparticles. According to the …

Research Authors
Hend A Mostafa, Osman Omran Osman, Yasser Abdelrhman, SM Ahmed
Research Date
Research Department
Mechanical Design and Production Engineering Department
Research Journal
Journal of Dispersion Science and Technology
Research Member
Hend Abdel Hafez Mostafa
Osman Omran Osman Mosa
Yasser Mahmoud Abdelrhman Mahmoud
Shemy Mohamed Ahmed Gabr
Research Pages
1-13
Research Publisher
Taylor & Francis
Research Year
2024

Optimization of the electroless Ni_P coating in glycine bath by Taguchi method

Research Authors
Refaie Omar, MS Aboraia, EA Oraby
Research Date
Research Department
Mining and Metallurgical Engineering Department
Research Journal
JES. Journal of Engineering Sciences
Research Member
Refaie Ahmad Sharkawi Omar
Research Publisher
Assiut University, Faculty of Engineering
Research Vol
1
Research Year
2019

Effect of glycine as a complex agent on the surface and corrosion properties of Ni-P and Ni-P/Al2O3 electroless coating

Research Authors
Refaie Omar, Elsayed Oraby, Yasser Abdelrhman, Mohammed Aboraia
Research Date
Research Department
Mining and Metallurgical Engineering Department
Research Journal
Anti-Corrosion Methods and Materials
Research Member
Refaie Ahmad Sharkawi Omar
Research Publisher
Emerald Publishing Limited
Research Vol
6
Research Year
2020

Study of smelting Egyptian black sand ilmenite by using El Magara coal

Research Authors
Refaie Omar, Ahmed Dawood
Research Date
Research Department
Mining and Metallurgical Engineering Department
Research Journal
JES. Journal of Engineering Sciences
Research Member
Refaie Ahmad Sharkawi Omar
Research Publisher
Assiut University, Faculty of Engineering
Research Vol
52
Research Year
2024

Mechanical properties and damping characteristics of Egyptian granite-epoxy composite material

Research Authors
Yasser Abdelrhman, Mohamed Omar, Ibrahim M Hassab-Allah, WM Shewakh, Wael M Khierldeen, Mohammed Hedaya, Refaie Omar, Mohamed F Younes
Research Date
Research Department
Mechanical Design and Production Engineering Department
Research Journal
Materials Research Express
Research Member
Refaie Ahmad Sharkawi Omar
Research Publisher
IOP Publishing
Research Vol
11
Research Year
2024

Optimization of electroless Ni-P coating bath and its impact in the Industrial Applications

Research Authors
Refaie Omar , Mohmoud A. El-Sharief
Research Date
Research Department
Mining and Metallurgical Engineering Department
Research Journal
JES. Journal of Engineering Sciences
Research Member
Refaie Ahmad Sharkawi Omar
Research Publisher
Assiut University, Faculty of Engineering
Research Vol
49
Research Year
2021
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