Search Results - "Nassef, A."

Enhancing the Elastohydrodynamic Lubrication and Vibration Behavior of Rolling Bearings Using a Hybrid Bio-Grease Blended with Activated Carbon Nanoparticles by Abouelkasem, Zeyad A., Nassef, Galal A., Abdelnaeem, Mohamed, Nassef, Mohamed G. A.

“…In recent years, bio-lubricants have received a growing interest for industrial applications. Still, a full-scale implementation in machinery lubrication…”
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Impact of Graphene Nano-Additives to Lithium Grease on the Dynamic and Tribological Behavior of Rolling Bearings by Nassef, Mohamed G. A., Soliman, Mina, Nassef, Belal Galal, Daha, Mohamed A., Nassef, Galal A.

“…In recent years, reduced graphene oxide (rGO) received considerable interest as a lubricant nano-additive for enhancing sliding and rolling contacts. This…”
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Developing a sustainable grease from jojoba oil with plant waste based nanoadditives for enhancement of rolling bearing performance by Dube, Ndabezinhle Ngubhe, ElKady, Marwa, Noby, Hussien, Nassef, Mohamed G. A.

“…This paper presents a novel grease from jojoba oil and activated carbon nanoparticles (ACNPs) extracted from banana peel waste. The raw jojoba oil and ACNPs…”
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Tribological and Chemical–Physical Behavior of a Novel Palm Grease Blended with Zinc Oxide and Reduced Graphene Oxide Nano-Additives by Nassef, Mohamed G. A, Nassef, Belal G, Hassan, Hassan S, Nassef, Galal A, Elkady, Marwa, Pape, Florian

“…The role of industrial lubricants in machinery is to reduce friction and wear between moving components. Due to the United Nations’ tendency to reduce…”
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Optimization of the Influencing Variables on the Corrosion Property of Steel Alloy 4130 in 3.5 wt.% NaCl Solution by El-Bindary, R. A., Nassef, A. E., El-Hadek, Medhat, El-Shamy, A. M.

“…In this work, the aqueous Lawsonia inermis extract (LI) is investigated as an economic and green deterioration inhibitive formula for steel alloy 4130 in 3.5…”
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Activated Carbon Nano-Particles from Recycled Polymers Waste as a Novel Nano-Additive to Grease Lubrication by Nassef, Mohamed G. A., Hassan, Hassan Shokry, Nassef, Galal A., Nassef, Belal Galal, Soliman, Mina, Elkady, Marwa F.

“…A worldwide growing trend is dedicated towards reducing carbon dioxide emissions from mechanical systems in different industries. One key factor under focus of…”
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Determination of optimum post-tensioning cable forces of cable-stayed bridges by Hassan, M.M., Nassef, A.O., El Damatty, A.A.

“…Modern cable-stayed bridges can be economically designed by applying optimum post-tensioning cable forces to achieve a minimum deflection and a uniform bending…”
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Correction: Mechanical Behavior of Seamless Pipes Using Ring Expansion Technique and Novel Hoop Stress Correlation Factor (K) by Abdelgawad, K., Nassef, A., Eraky, M. T., Saber, M.

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Effect of clearances in rolling element bearings on their dynamic performance, quality and operating life by Yakout, Mostafa, Nassef, M. G. A., Backar, Soheir

“…The performance of rolling element bearings is one of the machine quality measures in industry. The fatigue life and performance of rolling element bearings…”
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Clinical Significance of Epicardial Fat Measured Using Cardiac Multislice Computed Tomography by Sarin, Sanjay, MD, Wenger, Christopher, MD, Marwaha, Ajay, MD, Qureshi, Anwer, MD, Go, Bernard D.M., MD, Woomert, Cathleen A., MD, Clark, Karla, RN, Nassef, Louis A., MD, Shirani, Jamshid, MD

“…Cardiac adiposity defined as increased epicardial adipose tissue and massive deposits of fat within the atrial septum (lipomatous hypertrophy) is seen in…”
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Outcomes of regional transfers of ruptured abdominal aortic aneurysm in a UK vascular network by Proctor, V K, Lee, M J, Nassef, A H

“…INTRODUCTION Rupture of abdominal aortic aneurysm is a surgical emergency. In order to improve operative outcomes, vascular services have been centralised in…”
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Rolling element bearings absolute life prediction using modal analysis by Yakout, Mostafa, Elkhatib, A., Nassef, M. G. A.

“…In this paper, the authors introduce an experimental procedure for predicting the fatigue life of each individual rolling element bearing separately using…”
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Innovative Magnetic Gear Design Incorporating Electromagnetic Coils for Multiple Gear Ratios by Megahed, Tamer F., Gouda, Eid Abdelbaki, Mansour, Diaa-Eldin A., El-Hussieny, Haitham, Hameed, Ibrahim A., Fares, Ahmed, Nassef, Mohamed G. A.

“…In this study, a novel magnetic gear design is introduced. Unlike conventional magnetic gears that can only achieve a single gear ratio using permanent…”
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Investigating the Combined Effect of Multiple Dent and Bump Faults on the Vibrational Behavior of Ball Bearings by Atef, Mahmoud M., Khair-Eldeen, Wael, Yan, Jiwang, Nassef, Mohamed G. A.

“…The rolling element bearing is a fundamental component of any rotating machinery. During operation, wear debris and lubricant impurities create dents and bumps…”
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Chronic activation of cardiac Atg-5 and pancreatic Atg-7 by intermittent fasting alleviates acute myocardial infarction in old rats by El Agaty, Sahar Mohamed, Nassef, Noha A., Abou-Bakr, Doaa A., Hanafy, Aya A.

“…Background Aging is associated with cardiovascular and metabolic changes, increasing the susceptibility to acute myocardial infarction (AMI). Intermittent…”
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Transarterial embolization with N-butyl 2-cyanoacrylate for the treatment of recurrent secondary post-tonsillectomy hemorrhage by Awad, Ahmad Sayed, Nassef, Amr A, Mashhour, Shady Nabil

“…Background Postoperative hemorrhage is a potential complication of tonsillectomy, and early diagnosis and adequate management are mandatory to prevent…”
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CT chest for COVID-19, a multicenter study-experience with 220 Egyptian patients by Sabri, Youssriah Yahia, Nassef, Amr A, Ibrahim, Iman Mohamed Hamdy, Abd El Mageed, Mohammed Raafat, Khairy, Mostafa Ahmed

“…Background COVID-19 has become a national and an international pre-occupation to all doctors. Dealing with patients with clinical suspicion of COVID-19 is a…”
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Outcomes of regional transfers of ruptured abdominal aortic aneurysms by Proctor, V, Lee, M, Nassef, A

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Electroencephalography in systemic lupus erythematosus patients with neuropsychiatric manifestations by Mansour, Howaida E., Habeeb, Reem A., El-Azizi, Noran O., Afeefy, Heba H., Nassef, Marwa A., Abd Alkader, Ahmed A., Afifi, Naglaa

“…Background Neuropsychiatric manifestations are frequently reported in systemic lupus erythematosus (SLE) patients. This study was done to describe…”
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A coupled finite element genetic algorithm for optimum design of stiffened liquid-filled steel conical tanks by El Ansary, A.M., El Damatty, A.A., Nassef, A.O.

“…In the current study an optimum design technique of stiffened liquid-filled steel conical tanks subjected to global and local buckling constraints is developed…”
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