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Articles 1 - 30 of 47
Full-Text Articles in Engineering
Pedagogy Of The Pandemic: A Case Study Of Emergency Remote Education In A Private Higher Education Institution In Egypt, Rania M Rafik Khalil, Shadia Fahim, Wadouda Badran, Hadia Fakhreldin, Maguid Hassan, Hani Ghali, Attia Attia, Sarah Khalil, Hassan Abdelhamid, Yasmine Abdel Moneim, Omar H. Karam
Pedagogy Of The Pandemic: A Case Study Of Emergency Remote Education In A Private Higher Education Institution In Egypt, Rania M Rafik Khalil, Shadia Fahim, Wadouda Badran, Hadia Fakhreldin, Maguid Hassan, Hani Ghali, Attia Attia, Sarah Khalil, Hassan Abdelhamid, Yasmine Abdel Moneim, Omar H. Karam
English Language and Literature
COVID19 caught almost every higher education institution off guard. The pandemic interrupted the teaching and learning process and required immediate implementation of emergency remote learning strategies. Teaching pedagogy turned to new ways of thinking about learning. Consequently, both academic staff and students had to adapt without warning to the challenges of teaching with advanced technology from home which was taking the world by storm. Overcoming this challenge in Egypt has been much easier for private universities in comparison to state universities because of the availability of facilities, funding, smaller cohorts and validation by partner western universities. This paper shares reflections …
Anisotropic Cuinse2 Nanocrystals: Synthesis, Optical Properties And Their Effect On Photoelectric Response Of Dye-Sensitized Solar Cell, Ahmed Mysara, M Mohsen Abdelaziz, A N. Emam, A S. Mansour, A A. F. Zikry, M .B Mohamed, Y H. Elbashar
Anisotropic Cuinse2 Nanocrystals: Synthesis, Optical Properties And Their Effect On Photoelectric Response Of Dye-Sensitized Solar Cell, Ahmed Mysara, M Mohsen Abdelaziz, A N. Emam, A S. Mansour, A A. F. Zikry, M .B Mohamed, Y H. Elbashar
Nanotechnology Research Centre
CuInSe2 I-III-VI2 ternary is a semiconductor considered very good efficient solar energy conversion material. An organometallic pyrolysis method is used to prepare monodisperse CuInSe2 nanoparticles using a mixture of oleylamine, and trioctylphosphine, as capping materials. The particle shape changes to dot, rods or flowers occur via varying the reaction temperatures (160, 200, 220±C) respectively. The obtained particles have been characterized to determine the shape and size of CuInSe2 nanoparticles using HR-TEM and XRD. The optical and electronic properties of these particles have been investigated and discussed in detail. Then the different shapes of CuInSe …
Mucilage-Capped Silver Nanoparticles For Glucose Electrochemical Sensing And Fuel Cell Applications, Ziad Khalifa, Moustafa Zahran Dr, Magdy Zahran Prof, Magdi Abdel Azzem Prof
Mucilage-Capped Silver Nanoparticles For Glucose Electrochemical Sensing And Fuel Cell Applications, Ziad Khalifa, Moustafa Zahran Dr, Magdy Zahran Prof, Magdi Abdel Azzem Prof
Chemical Engineering
A simple, cost-effective and green mucilage-capped silver nanoparticles (Mucilage-AgNPs) modified glassy carbon electrode (GC) composite was constructed for efficient and facile electrochemical oxidation of glucose for the first time. Mucilage-AgNPs were synthesized through the direct chemical reduction of Ag+ by mucilage extracted from Opuntia ficus-indica. Mucilage-AgNPs were identified and characterized using ultraviolet-visible spectroscopy, transmission electron microscopy and square wave voltammetry. Modification of the GC with AgNPs was carried out via a transfer-sticking technique with an immobilization time of 1 h. The Mucilage-AgNPs/GC composite was studied as a possible anode for glucose oxidation in a biofuel cell. The composite resulted in …
Online Implementation Of Structural Analysis Tool For Remote Learning, Ghada El-Mahdy, Amany Micheal
Online Implementation Of Structural Analysis Tool For Remote Learning, Ghada El-Mahdy, Amany Micheal
Civil Engineering
The delivery of a structural analysis module to architectural or civil engineering students needs the visualization of certain diagrams, such as the internal force diagrams and the elastic line. These diagrams are difficult to grasp for students new to structural analysis and need a lot of practice to become proficient in drawing them. Current structural analysis textbooks with electronic platforms do not include tools to draw the internal force diagrams or deflection. This has led to the initiative of creating an online structural analysis tool to enable the student to easily apply different loadings on different statical systems to draw …
Analyzing The Structural Properties Of Fire Clay Bricks After Adding Cigarette Filters, Karim Galal Abdullatif, Marianne N. Guirguis, Rania Rushdy Moussa
Analyzing The Structural Properties Of Fire Clay Bricks After Adding Cigarette Filters, Karim Galal Abdullatif, Marianne N. Guirguis, Rania Rushdy Moussa
Architectural Engineering
Cigarette filters are one of the most littered objects in the world that damage the environment. Incorporation in construction bricks offers the prospect of limiting damage and solves the recyclability problem for a typical non-biodegradable waste. This paper aims to explore that prospect, by adding cigarette filters in the production of two samples of fired clay bricks with the cigarette filters comprising 5% and 10% of the volume. The mixing and molding processes were done manually which had an effect on the bricks when tested, The results of testing were corresponding with those of previous studies (outside Egypt), however, only …
Anti-Collision Planning Optimization In Directional Wells, Abdulrahman Mohamed
Anti-Collision Planning Optimization In Directional Wells, Abdulrahman Mohamed
Petroleum Engineering and Gas
One of the most application of the directional drilling is drilling multiple wells from one location or platform. In drilling multiple wells from one location the major problem that faced is avoiding the collision with the offset wells that drilled near the proposed well in the same region. Therefore, the potential of collison between the wells can cause severe catastrophic accidents such as an explosion or oil spill. Several measurements of proximity calculation or methods have been adopted to control the distance between the wells, avoid the collison, increasing the clearance along with smoothing the trajectory, Reducing the drilling time …
Isotherm And Kinetics Study For The Adsorption Of Nitrate From An Aqueous Solution Using A Modified Rice Straw, Dalia A. Ali Eng, Mohamed A. Sadek Prof., Nagwa Mahmoud Al-Mansi Prof, Ahmad Wafiq Aboelnasr Dr.
Isotherm And Kinetics Study For The Adsorption Of Nitrate From An Aqueous Solution Using A Modified Rice Straw, Dalia A. Ali Eng, Mohamed A. Sadek Prof., Nagwa Mahmoud Al-Mansi Prof, Ahmad Wafiq Aboelnasr Dr.
Chemical Engineering
In this research, modified rice straw (MRS) is proposed. The proposed production process of the modified rice straw (MRS) adsorbent is carried out by precipitation of iron nano particles on the surface of acid activated rice straw. The nitrate adsorption is carried out through batch experiments. The optimum nitrate removal 94.8 % was achieved at pH = 7, adsorbent dose 3 = g/L, 150 rpm, initial nitrate concentration = 23 mg/L and contact time 180 = min. The new adsorbent synthesis, kinetics and isotherm models were studied. The nitrate adsorption was well described by pseudo second order kinetic model (R2 …
Deep Learning Techniques For Structural Response Prediction During Strong Ground Motions, Ahmed A. Torky, Susumu Ohno Prof., Toshide Kashima Prof.
Deep Learning Techniques For Structural Response Prediction During Strong Ground Motions, Ahmed A. Torky, Susumu Ohno Prof., Toshide Kashima Prof.
Civil Engineering
In this paper, deep learning techniques are applied to predict a building’s structural response to strong ground motions. Data from sensors near and inside structures measure accelerations during strong ground motions. The Building Research Institute (BRI) ANX building, an eight-story structure, has experienced major earthquakes since 1998. Sensors in the building provide and accumulate big data of historic events. Changes of the natural frequency of the ANX building from the big data is initially quantified. The time-series data of the historic events can be used to predict future response to future events using deep learning models rapidly. Although previous literature …
Optimization Of Nitrate Removal From Aqueous Solution By Acid-Activated Rice Straw Supported Nano Zero-Valent Iron Using Response Surface Methodology, Dalia A. Ali Eng, Nagwa Mahmoud Al-Mansi Prof, Mohamed Amin Sadek Prof., Ahmad Wafiq Abolnasr Dr.
Optimization Of Nitrate Removal From Aqueous Solution By Acid-Activated Rice Straw Supported Nano Zero-Valent Iron Using Response Surface Methodology, Dalia A. Ali Eng, Nagwa Mahmoud Al-Mansi Prof, Mohamed Amin Sadek Prof., Ahmad Wafiq Abolnasr Dr.
Chemical Engineering
Rice straw is one of the most common agricultural wastes due to its large production amounts. Energy valorization of rice straw is a technology used for nitrate removal as the produced ashes used to generate the adsorbent by means of an alkali dissolution followed by acid precipitation. The novelty of the proposed process is that the production of the nano zero-valent iron supported acid-activated rice straw (AARS-nZVI) adsorbent is carried out without the energy valorization process but, through an acid activation for rice straw followed by precipitation of nZVI particles on its surface. The new adsorbent synthesis, characterization and application …
Natural Latex-Capped Silver Nanoparticles For Two-Way Electrochemical Displacement Sensing Of Eriochrome Black T, Ziad Khalifa, Moustafa Zahran Dr, Magdy Zahran Prof, Magdi Abdel Azzem Prof
Natural Latex-Capped Silver Nanoparticles For Two-Way Electrochemical Displacement Sensing Of Eriochrome Black T, Ziad Khalifa, Moustafa Zahran Dr, Magdy Zahran Prof, Magdi Abdel Azzem Prof
Chemical Engineering
No abstract provided.
Individual And Simultaneous Voltammetric Determination Of Ultra- Trace Environmental Contaminant Dihydroxybenzene Isomers Based On A Composite Electrode Sandwich-Like Structure, Ziad Khalifa, Khalid Hassan Dr, Mohamed Fathi Abo Oura Mr, Abla Hathoot Prof, Magdi Abdel Azzem Prof
Individual And Simultaneous Voltammetric Determination Of Ultra- Trace Environmental Contaminant Dihydroxybenzene Isomers Based On A Composite Electrode Sandwich-Like Structure, Ziad Khalifa, Khalid Hassan Dr, Mohamed Fathi Abo Oura Mr, Abla Hathoot Prof, Magdi Abdel Azzem Prof
Chemical Engineering
An advanced electroanalytical technique for the simultaneous assessment of environmental contaminant dihydroxybenzene isomers, catechol (CC), hydroquinone (HQ), and resorcinol (RC), has been investigated using palladium nanoparticles (PdNPs) incorporated onto a poly(1,5-diaminonaphthalene) (DAN) matrix over a glassy carbon electrode (GCE). Concurrently, these types of phenols can be assessed by the PdDAN/GCE modified electrode employing square wave voltammetry and cyclic voltammetry (CV) techniques under optimal conditions. This modified electrode has demonstrated linear responses for CC, HQ, and RC from 50.0 to 1000.0 mM; concomitantly, low detection limits of 0.22, 0.22, and 0.47 nM and low quantification limits of 0.740, 0.758, and 1.590 …
The Role Of Electrolytically Deposited Palladium And Platinum Metal Nanoparticles Dispersed Onto Poly(1,8- Diaminonaphthalene) For Enhanced Glucose Electrooxidation In Biofuel Cells, Ziad Khalifa, Khalid Hassan Dr, Ghada Elhaddad Dr, Magdi Abdel Azzem Prof
The Role Of Electrolytically Deposited Palladium And Platinum Metal Nanoparticles Dispersed Onto Poly(1,8- Diaminonaphthalene) For Enhanced Glucose Electrooxidation In Biofuel Cells, Ziad Khalifa, Khalid Hassan Dr, Ghada Elhaddad Dr, Magdi Abdel Azzem Prof
Chemical Engineering
Glucose biofuel cells are one of the promising power supplies with a competent long-term stability and power density. In this respect, catalysts of palladium (Pd) and platinum (Pt) metal nanoparticles film coated electrode were fabricated for biofuel cell. The Pt and Pd particles were electrochemically deposited onto glassy carbon (GC) electrode modified with poly(1,8-diaminonaphthalene), (p-1,8-DAN), via single or layer-by-layer electrodeposition. In results, Pt/p-1,8-DAN/GC, Pd/p-1,8-DAN/GC, Pt-Pd/p-1,8- DAN/GC and Pd-Pt/p-1,8-DAN/GC shell-core catalysts were fabricated and characterized by several ana- lytical techniques such as AFM, EDX,SEM, TEM, and XPS, in addition to electrochemical methods. Their catalytic electrooxidation behaviors of glucose were investigated in …
Enhanced Water Electrolysis: Effect Of Temperature On The Oxygen Evolution Reaction At Cobalt Oxide Nanoparticles Modified Glassy Carbon Electrodes, Aya Akl, Hany A. Elazab, Mohamed A. Sadek, Mohamed S. El-Deab
Enhanced Water Electrolysis: Effect Of Temperature On The Oxygen Evolution Reaction At Cobalt Oxide Nanoparticles Modified Glassy Carbon Electrodes, Aya Akl, Hany A. Elazab, Mohamed A. Sadek, Mohamed S. El-Deab
Chemical Engineering
Water splitting producing hydrogen and oxygen gases appears promising in view of the increasing need of renewable energy sources and storage strategies. Investigation of stable and highly efficient electrocatalysts for oxygen evolution reaction (OER) is targeted in this study at cobalt oxide nanoparticle modified glassy carbon (nano-CoOx/GC) electrodes. The effect of the preparation (Tp) and measuring temperature (Tm) on the electrocatalytic activity of nano-CoOx/GC towards the OER is investigated under various operating conditions. Linear sweep voltammetry (LSV), cyclic voltammetry (CV) as well as SEM and XRD techniques were used to probe the electrocatalytic and morphological characteristics of nano-CoOx prepared under …
Enhanced Water Electrolysis: Effect Of Temperature On The Oxygen Evolution Reaction At Cobalt Oxide Nanoparticles Modified Glassy Carbon Electrodes, Aya Akl, Hany A. Elazab, Mohamed A. Sadek, Mohamed S. El-Deab
Enhanced Water Electrolysis: Effect Of Temperature On The Oxygen Evolution Reaction At Cobalt Oxide Nanoparticles Modified Glassy Carbon Electrodes, Aya Akl, Hany A. Elazab, Mohamed A. Sadek, Mohamed S. El-Deab
Chemical Engineering
Water splitting producing hydrogen and oxygen gases appears promising in view of the increasing need of renewable energy sources and storage strategies. Investigation of stable and highly efficient electrocatalysts for oxygen evolution reaction (OER) is targeted in this study at cobalt oxide nanoparticle modified glassy carbon (nano-CoOx/GC) electrodes. The effect of the preparation (Tp) and measuring temperature (Tm) on the electrocatalytic activity of nano-CoOx/GC towards the OER is investigated under various operating conditions. Linear sweep voltammetry (LSV), cyclic voltammetry (CV) as well as SEM and XRD techniques were used to probe the electrocatalytic and morphological characteristics of nano-CoOx prepared under …
Installing Piezoelectric Tiles In Children Outdoor Playing Areas To Create Clean & Healthy Environment; Case Study Of El-Shams Sporting Club, Cairo_Egypt, Rania Rushdy Moussa
Installing Piezoelectric Tiles In Children Outdoor Playing Areas To Create Clean & Healthy Environment; Case Study Of El-Shams Sporting Club, Cairo_Egypt, Rania Rushdy Moussa
Architectural Engineering
The pollution rate has increased during the last decades, the increasing percentage of CO2 and methane causes environmental problems such as changing in climate and rising of new diseases that jeopardize the public health. Creating a clean and healthy environment is an essential goal to protect the planet and human race. The environmental changes became a great issue all over the world especially in the developing countries such as Egypt, lately the electricity generation process and the heavy usage of fossil fuel increased the numbers of children infected by asthma and lung problems due to the air pollution. In order …
Experimental Investigation For Moment Redistribution In Continuous Rc Beams Top Strengthened With Cfrp And Steel Plates, Amr Ibrahim, Shady Salem, Ayman Khalil, Mahmoud El-Kateb
Experimental Investigation For Moment Redistribution In Continuous Rc Beams Top Strengthened With Cfrp And Steel Plates, Amr Ibrahim, Shady Salem, Ayman Khalil, Mahmoud El-Kateb
Civil Engineering
An experimental study was conducted on eight T-section continuous reinforced concrete beams top strengthened with CFRP and steel plates. The beams had a constant cross section and flexural steel reinforcement which was designed to prevent brittle failure due to crushing of concrete before steel yielding. The plates were installed on both sides of the slab above the beam web as near surface mounted or externally bonded to investigate the effect of different plating techniques on the moment redistribution in reinforced concrete beams. The number of plates in each specimen was changed. Steel stirrups were used and designed so that no …
Synthesis And Characterization Of Pvp Based Catalysts For Selected Application In Catalysis, Hany A. Elazab, Mohamed N. Ayad, Mohamed M. Hammam, M. A. Radwan, M. A. Sadek
Synthesis And Characterization Of Pvp Based Catalysts For Selected Application In Catalysis, Hany A. Elazab, Mohamed N. Ayad, Mohamed M. Hammam, M. A. Radwan, M. A. Sadek
Chemical Engineering
This research aims to study the catalyst activity in specific reactions and the characteristics of the catalyst in order to optimize its performance. This research investigates PVP based catalysts and their properties and applications. PVP was prepared in combination with different metal oxides in order to be tested for different catalytic applications including dye removal. Methyl orange was used as a dye and different concentrations were tested against different metallic ions in order to optimize the catalyst for being used in dye removal applications. Spectrophotometer was used to calculate the concentration of the dye before and after catalyst exposure and …
Investigating The Experimental Process For Partial Replacement Of Cement With Sugarcane Bagasse In The Construction Industry, Amany G. Micheal Prof., Rania Moussa, Nadin Dawoud
Investigating The Experimental Process For Partial Replacement Of Cement With Sugarcane Bagasse In The Construction Industry, Amany G. Micheal Prof., Rania Moussa, Nadin Dawoud
Centre for Advanced Materials
In the last few decades there has been speedily increasing in the agriculture and industrial wastes. This causes many environmental issues and raises the potential to contaminate the natural resources of living such as water, air and soil. Recently, the amount of organic waste produced daily has been rising, while it is poorly managed. It is either burned or disposed improperly, which effect negatively the environment and public health. On the other hand, during the cement production process many wastes, and pollutants are generated which have major negative impacts on the environment. Cement is considered as a substantial constituent of …
Dissolved Organic Matter-Capped Silver Nanoparticles For Electrochemical Aggregation Sensing Of Atrazine In Aqueous Systems, Ziad Khalifa, Moustafa Zahran Dr, Magdy Zahran Prof, Magdi Abdel Azzem Prof
Dissolved Organic Matter-Capped Silver Nanoparticles For Electrochemical Aggregation Sensing Of Atrazine In Aqueous Systems, Ziad Khalifa, Moustafa Zahran Dr, Magdy Zahran Prof, Magdi Abdel Azzem Prof
Chemical Engineering
An electrochemical sensor based on silver nanoparticles (AgNPs) was developed by immobilizing dissolved organic matter (DOM) to interact with AgNPs on a glassy carbon electrode (GC), forming a DOM/AgNP/GC composite. AgNPs have been fabricated and characterized using ultraviolet−visible spectroscopy, fluorescence spectroscopy, and transmission electron microscopy. The immobilization efficiency and stability of the DOM/AgNP/GC composite have been optimized through studying the effects of electrode material type, immobilization technique, sticking duration, supporting electrolyte, and pH using square wave anodic stripping voltammetry. The detection of atrazine (Atz), a common herbicide, in aqueous systems has a great significance because of its toxicity to humans …
Ni-Au Anodic Nano-Electrocatalyst For Direct Glucose Fuel Cells, Yaser M. Asal Mr., Islam M. Al-Akraa Dr, Ahmad M. Mohammad Prof, Aya S. Abdulhalim Eng
Ni-Au Anodic Nano-Electrocatalyst For Direct Glucose Fuel Cells, Yaser M. Asal Mr., Islam M. Al-Akraa Dr, Ahmad M. Mohammad Prof, Aya S. Abdulhalim Eng
Chemical Engineering
This study aims at the sequential assembling of a nickel oxide (NiOx: cauliflower-like nanostructure, 90 nm) and gold (Au; spherical, 95 nm in an average particle size) onto the GC surface nanocatalyst on a glassy carbon (GC) electrode (will be abbreviated as Ni-Au/GC) for the glucose electro−oxidation (GO); the principal anodic reaction in the direct glucose fuel cells (DGFCs). The charge of the Ni deposition on the GC surface (will be abbreviated as Ni/GC electrode) was initially optimized to obtain the highest catalytic activity toward GO which attained at (339.8 Ag−1) by applying 15 mC in the Ni deposition. Yet, …
Moment Redistribution In Continuous Rc Beams Top Strengthened With Steel And Cfrp Plates, Amr Ibrahim, Ayman Khalil, Shady Salem, Mahmoud El-Kateb
Moment Redistribution In Continuous Rc Beams Top Strengthened With Steel And Cfrp Plates, Amr Ibrahim, Ayman Khalil, Shady Salem, Mahmoud El-Kateb
Civil Engineering
It is common practice to retrofit continuous reinforced concrete (RC) beams by fiber reinforced polymer (FRP) or steel plates. This can cause a significant amount of moment redistribution (MR) which results in an efficient and economic design when taken into consideration. There is lack in research regarding MR in continuous RC beams when strengthening plates are applied only at the top side at the hogging regions. The main purpose of this paper is to assess MR in continuous RC beams top strengthened with steel and/or carbon fiber reinforced polymer (CFRP) plates. In this respect, a nonlinear finite element model was …
Synthesis And Characterization Of Chitosan Based Catalyst For Catalysis Applications, Hany A. Elazab, Yousab G. Remiz, M. A. Radwan, M. A. Radwan, M. A. Sadek
Synthesis And Characterization Of Chitosan Based Catalyst For Catalysis Applications, Hany A. Elazab, Yousab G. Remiz, M. A. Radwan, M. A. Radwan, M. A. Sadek
Chemical Engineering
In this research, chitosan based catalyst synthesis and characterization was investigated for different application in catalysis as chitosan based catalyst was combined with metal oxides in order to be used in dye removal of methyl orange (MO). Diluted acetic acid was used to dissolve chitosan then different percentages for metallic ions were mixed with diluted chitosan and then, 500 μL were added to the sample to reduce the metal salts then, microwave was used to heat the mixture for 5 minutes and then dried at 80-100 °C. Finally, X- ray diffraction was used to confirm the catalyst prepared. The aim …
Evaluation Of Capacitive Deionization Desalination Technology For Irrigation, Ziad Khalifa, Moustafa Elshafei Prof, Abdalrahman Amer, Eng, Ashraf Seleym Dr, Tamer Samir Eng
Evaluation Of Capacitive Deionization Desalination Technology For Irrigation, Ziad Khalifa, Moustafa Elshafei Prof, Abdalrahman Amer, Eng, Ashraf Seleym Dr, Tamer Samir Eng
Chemical Engineering
Desalination of brackish groundwater has great potential to alleviate the problem of the limited water resources in Egypt. In this paper, we studied the desalination of brackish water for irrigation purposes using capacitive deionization (CDI) technology. We investigated a modular unit for use in greenhouses (GH). A GH for the production of tomato requires about 3.2 m3/d of water. The target CDI unit has a production capacity of 32 m3/d for irrigation of 10 greenhouses from brackish water. The paper provides an extensive simulation study to illustrate the influence of various design parameters and to unveil the CDI technology pros …
Enhanced Glucose Electrooxidation At Ni-Cu Binary Oxide Nanocatalyst, Yaser M. Asal Mr., Islam M. Al-Akraa Dr, Ahmad M. Mohammad Prof, Mahmoud M. Abuzaied Eng
Enhanced Glucose Electrooxidation At Ni-Cu Binary Oxide Nanocatalyst, Yaser M. Asal Mr., Islam M. Al-Akraa Dr, Ahmad M. Mohammad Prof, Mahmoud M. Abuzaied Eng
Chemical Engineering
The aim of this study is to fabricate a nickel (NiOx) and copper (CuOx) oxide nanocatalyst on a glassy carbon (GC) electrode (will be abbreviated as Ni-Cu/GC) for glucose oxidation (GO). A sequential electrodepositon mode was applied to assemble NiOx and CuOx in the fabrication scheme. The optimization of Ni loading on the GC surface (will be abbreviated as Ni/GC electrode) was achieved first to attain the maximum catalytic efficiency in terms of the specific current toward GO. This (409 Ag-1)was obtained by applying 15 mC/cm2 in the deposition of Ni. However, unfortunately the NiOx/GC could not …
Assessment Of Smc Frames Under Different Column Removal Scenarios, Mina Maxi, Mariam Ehab
Assessment Of Smc Frames Under Different Column Removal Scenarios, Mina Maxi, Mariam Ehab
Civil Engineering
Throughout the past decades, failure of structures threatening the lives of humans had been popular whether through structure failure due to human error such as Hyatt Regency walkway collapse, 1981, terrorist attacks on the American embassy attack in Nairobi, Kenya 1998 and the famous 9/11 attacks in 2001 and many more. As a result of these incidents, The Unified Facilities Criteria (UFC) was developed concerning the progressive collapse issues by analyzing different types of structures under column loss and studying the overall structural behavior. However, the (UFC) didn’t scope on the local behavior of the structural components and its connection …
Preparation, Characterization And Biological Activity Of Novel Schiff Base Complexes Based On La, Er And Yb Metal Ions, Hoda Ahmed, Walaa H. Mahmoud, Islam M. Al-Akraa Dr, Gehad G. Mohamed
Preparation, Characterization And Biological Activity Of Novel Schiff Base Complexes Based On La, Er And Yb Metal Ions, Hoda Ahmed, Walaa H. Mahmoud, Islam M. Al-Akraa Dr, Gehad G. Mohamed
Chemical Engineering
The tridentate [HL, (4-[(2-(2-quinolinoimino)-3, 5-dibromobenzyl) amino] cyclohexanol)]Schiff base ligand was prepared from the condensation reaction of 2-quinoline carbaldehyde with the drug ambroxol. The prepared HL ligand was further used in the preparation of some new complexes via the reaction with La(III), Er(III) and Yb(III) metal ions. The geometry of the prepared complexes was proposed from elemental analysis, FT-IR, 1H NMR, thermal and magnetic susceptibility. 1H NMR showed that the three nitrogen atoms of the ligand were responsible for the complex formation. The thermal analysis technique provided a clear prospect about the decomposition steps of the Schiff base ligand and its …
Assessment Of Smc Frames Under Different Column Removal Scenarios, Mariam Ehab, Mina Malak
Assessment Of Smc Frames Under Different Column Removal Scenarios, Mariam Ehab, Mina Malak
Civil Engineering
Throughout the past decades, failure of structures threatening the lives of humans had been popular whether through structure failure due to human error such as Hyatt Regency walkway collapse, 1981, terrorist attacks on the American embassy attack in Nairobi, Kenya 1998 and the famous 9/11 attacks in 2001 and many more. As a result of these incidents, The Unified Facilities Criteria (UFC) was developed concerning the progressive collapse issues by analyzing different types of structures under column loss and studying the overall structural behavior. However, the (UFC) didn’t scope on the local behavior of the structural components and its connection …
A Reduced Model For Microbial Electrolysis Cells, Dina Aboelela, Moustafa A. Soliman, Ibrahim Ashour
A Reduced Model For Microbial Electrolysis Cells, Dina Aboelela, Moustafa A. Soliman, Ibrahim Ashour
Chemical Engineering
Microbial electrolysis cells (MECs) are breakthrough technology of cheap hydrogen production with high efficiency. In this paper differential-algebraic equation (DAE) model of a MEC with an algebraic constraint on current was studied, simulated and validated by implementing the model on continuous-flow MECs. Then sensitivity analysis for the system was effectuated. Parameters which have the predominating influence on the current density and hydrogen production rate were defined. This sensitivity analysis was utilized in modeling and validation of the batch-cycle of MEC. After that parameters which have less influence on MEC were eliminated and simplified reduced model was obtained and validated. Finally, …
A Spin-Coated Tiox/Pt Nanolayered Anodic Catalyst For The Direct Formic Acid Fuel Cells, Islam M. Al-Akraa, Ahmad M. Mohammad Prof
A Spin-Coated Tiox/Pt Nanolayered Anodic Catalyst For The Direct Formic Acid Fuel Cells, Islam M. Al-Akraa, Ahmad M. Mohammad Prof
Chemical Engineering
The CO poisoning of the platinum anodic catalyst which typically functions the catalytic deterioration of the direct formic acid fuel cells could be minimized with a simple modification for Pt with titanium oxide. The fabrication scheme involved the spin-coating of a Ti precursor onto a Pt thin layer that was physically sputtered onto a Si substrate. The whole assembly was subjected to a post-annealing processing to produce the TiOx layer (60 nm) in a porous structure (mostly Anatase) atop of the Pt surface. The porous nature of the TiOx layer permitted the participation of Pt in the electrocatalysis of the …
A Reduced Model For Microbial Fuel Cell, Dina Aboelela, Moustafa A. Soliman, Ibrahim Ashour
A Reduced Model For Microbial Fuel Cell, Dina Aboelela, Moustafa A. Soliman, Ibrahim Ashour
Chemical Engineering
Microbial fuel cells (MFCs) are a group of microbial electrochemical cells (bioreactors) that are used to generate energy from organic waste found in wastewater. MFCs represent a promising method of waste disposal and production of electricity. Scaling up the use of MFCs requires extensive analysis and detailed grasp of the required processes. The current work aimed to study a model of an MFC, and find the optimum parameters needed for maximum energy production. The process was simulated and validated on continuous-flow MFCs with a Columbic efficiency of 162% and 35% COD removal. Sensitivity analysis of the model was performed. The …