Search Results - "Ahmed Mahmoud, Ahmed Mohamed"

Highly conductive and alkaline stable partially fluorinated anion exchange membranes for alkaline fuel cells: Effect of ammonium head groups by Ahmed Mahmoud, Ahmed Mohamed, Miyatake, Kenji

“…The effect of ammonium structure on partially fluorinated anion exchange membranes was investigated for alkaline fuel cell applications. Precursor copolymers…”
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Alkaline fuel cells consisting of imidazolium-based graft-type anion exchange membranes: Optimization of fuel cell conditions to achieve high performance and durability by Mahmoud, Ahmed Mohamed Ahmed, Yoshimura, Kimio, Maekawa, Yasunari

“…Water management in alkaline fuel cells through the dew point optimization for a series of imidazolium-based graft-type anion exchange membranes (AEMs)…”
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Highly Conductive and Ultra Alkaline Stable Anion Exchange Membranes by Superacid-Promoted Polycondensation for Fuel Cells by Mohamed Ahmed Mahmoud, Ahmed, Miyatake, Kenji

“…A series of anion exchange membranes (4-QPPAF-TMA) were prepared by a metal-free, superacid-promoted polymerization reaction. The polymers were obtained with…”
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Tuning the Hydrophobic Component in Reinforced Poly(arylimidazolium)-Based Anion Exchange Membranes for Alkaline Fuel Cells by Ahmed Mahmoud, Ahmed Mohamed, Miyatake, Kenji

“…A series of imidazolium-based aromatic copolymers were synthesized using fluorinated and non-fluorinated hydrophobic monomers. The quaternized copolymers were…”
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Novel elimination method of iron and manganese ions from drinkable groundwater in Assiut, Egypt, by using sodalite-bearing modified illite by Mohamed, Atef Mohamed Gad, Mohamed, Mahmoud Mohamed Ahmed, Farrag, Abd El Hay Ali, Ali, Al-Shimaa Roshdy Mohamed

“…The world’s interest now is focusing on the applying of the principles of sustainable development in managing natural resources, especially in managing…”
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Behavior of RC columns strengthened with steel jacket under static axial load by Ghoneim, Abd Rahman Mujahid Ahmed, Mohamed, Mahmoud Ahmed Mohamed, Haridy, Kader, Ahmed, Hazem, Pyram, Mohmmad, Khalf, Abdu

“…The column is one of the most significant structural elements, which is designed to support mainly the compressive load. Strengthening of existing reinforced…”
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The flotation separation of sphalerite from pyrite through a novel flotation reagent system of FeCl3-CuSO4-aminotriazolethione by Zhang, Zhiyong, Liu, Sheng, Liu, Fengyue, Mohamed Mohamed Ahmed, Mahmoud, Qu, Xiaoyan, Liu, Guangyi

“…[Display omitted] •4-amino-5-pentyl-1,2,4-triazole-3-thione was used in flotation of ZnS and FeS2.•With APTT collector, FeCl3 depressed the floatability of…”
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Effects of groove-textured surfaces filled with Sn-Ag-Cu and MXene-Ti3C2 composite lubricants on tribological properties of CSS-42L bearing steel by Xue, Yawen, Wu, Chaohua, Shi, Xiaoliang, Huang, Qipeng, Ibrahim, Ahmed Mohamed Mahmoud

“…To improve the tribological performance of CSS-42L bearing steel, smooth surfaces (SSs), groove-textured surfaces (GSs), GSs with Sn-Ag-Cu (GSs-SAC), and GSs…”
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Fine-tuned artificial intelligence model using pigeon optimizer for prediction of residual stresses during turning of Inconel 718 by Elsheikh, Ammar H., Muthuramalingam, T., Shanmugan, S., Mahmoud Ibrahim, Ahmed Mohamed, Ramesh, B., Khoshaim, Ahmed B., Moustafa, Essam B., Bedairi, Badr, Panchal, Hitesh, Sathyamurthy, Ravishankar

“…Inconel 718 is a hard-to-machine alloy with very poor machinability and low thermal conductivity. Machining of such alloy is a critical manufacturing issue…”
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Doherty Power Amplifier With Enhanced Efficiency at Extended Operating Average Power Levels by Mohamed, Ahmed Mohamed Mahmoud, Boumaiza, Slim, Mansour, Raafat R.

“…This paper proposes an electronically reconfigurable Doherty amplifier capable of efficiently amplifying wireless signals with significant time varying average…”
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Forecasting the Friction Coefficient of Rubbing Zirconia Ceramics by Titanium Alloy by Salah, Ahmad, Fathalla, Ahmed, Eldesouky, Esraa, Li, Wei, Mahmoud Ibrahim, Ahmed Mohamed

“…The thermal issues generated from friction are the key obstacle in the high-performance machining of titanium alloys. The friction between the workpiece being…”
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High‐Performance Anion Exchange Membrane Water Electrolyzers Enabled by Highly Gas Permeable and Dimensionally Stable Anion Exchange Ionomers by Liu, Fanghua, Miyatake, Kenji, Tanabe, Masako, Mahmoud, Ahmed Mohamed Ahmed, Yadav, Vikrant, Guo, Lin, Wong, Chun Yik, Xian, Fang, Iwataki, Toshio, Uchida, Makoto, Kakinuma, Katsuyoshi

“…Designing suitable anion exchange ionomers is critical to improving the performance and in situ durability of anion exchange membrane water electrolyzers…”
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An extensive analysis of mechanical, thermal and physical properties of jute fiber composites with different fiber orientations by Rangasamy, Gukendran, Mani, Sambathkumar, Senathipathygoundar Kolandavelu, Sasikumar Kondayampalayam, Alsoufi, Mohammad S., Mahmoud Ibrahim, Ahmed Mohamed, Muthusamy, Suresh, Panchal, Hitesh, Sadasivuni, Kishor Kumar, Elsheikh, Ammar H.

“…The study is aimed to find the effect of orientation of the woven jute fiber on the composites with epoxy matrix on the mechanical properties, thermal…”
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Efficiency Improvement of Dual-Band Wireless Power Transfer (DB-WPT) System with U-shape Resonator and Capacitively Loaded E-shape Defected Ground Structure (DGS) by Atallah, Hany A., El Negm Yousef, Mahmoud Mohamed Ahmed, Abdel-Rahman, Adel B.

“…This paper suggests a design for dual-band wireless power transfer systems that use E-shape defected ground structure resonator loaded with a 1.5 pF capacitor…”
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Investigation of mechanical properties of dual-fiber reinforcement in polymer composite by Anand Raj, Mohan Kumar, Muthusamy, Suresh, Panchal, Hitesh, Mahmoud Ibrahim, Ahmed Mohamed, Alsoufi, Mohammad S., Elsheikh, Ammar H.

“…Nowadays, the demand for fiber-based composites increases continuously compared to conventional materials because of their excellent mechanical properties…”
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Effect of Radical‐Mediated Cross‐Linking on Partially Fluorinated Aromatic Anion Exchange Membranes and their Applications in Alkaline Water Electrolysis Cells by Mahmoud, Ahmed Mohamed Ahmed, Miyatake, Kenji, Liu, Fanghua, Yadav, Vikrant, Guo, Lin, Wong, Chun Yik, Iwataki, Toshio, Kakinuma, Katsuyoshi, Uchida, Makoto

“…To investigate the effect of cross‐linking on partially fluorinated anion exchange membranes tethered with trimethylpropyl side chains (QPAF‐C3), styrene‐based…”
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Microwave assisted the short time clean synthesis of 1,3-diketones as building blocks in heterocyclic synthesis: a facile synthesis and antimicrobial evaluation of new dihydropyridine, 4H-pyrane, dihydropyridazine, pyrimidine and pyrazole derivatives by Abdel Reheim, Mohamed Ahmed Mahmoud, Abdel Hafiz, Ibrahim Saad, Abdel Rady, Hend Saad Eldin

“…The compounds bearing naphthalene moiety can be used as medical preparations because of their wide spectrum of biological activity and low toxicity. In this…”
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Audio-Vestibular Findings in Patients with Hyperuricemia by Al-Sobki, Mohamed Mahmoud, El-Zarea, Gehan Abd-Al-Rahman, Ahmed Mahmoud, Ahmed Mohamed, Saad, Ahmed Abd El Moez Ali

“…Background: Hyperuricemiais a common biochemical disturbance in which serum concentration of uric acid exceeds the normal values which is 7.0 mg/dl in men and…”
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Oil spill cleanup by raw flax fiber: Modification effect, sorption isotherm, kinetics and thermodynamics by Mahmoud, Mohamed Ahmed

“…[Display omitted] •Modification of flax fiber by acetylating process and microwave energy.•Flax fiber was analyzed by FTIR, XRD, and SEM analysis.•Fast oil…”
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Reconfigurable Doherty Power Amplifier for Multifrequency Wireless Radio Systems by Mahmoud Mohamed, Ahmed Mohamed, Boumaiza, S., Mansour, R. R.

“…This paper proposes a frequency-agile Doherty amplifier capable of efficiently amplifying multiband wireless signals located at widely spaced frequencies…”
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