Architecture Commons^™

Reaction Pathways, Kinetic Modelling And Parameter Estimation Of Heterogeneous Catalytic Trans-Esterificationprocess, Owolabi,R. U, Aderinsola A. P

Mansoura Engineering Journal

The kinetics of heterogeneous catalyzed trans-esterification between castor oil and methanol was studied and modeled. Kinetic data was obtained from a perfectly mixed slurry batch reactor. The modeling was conducted via the modified-hattori mechanism to determine the exact rate controlling step for the reaction. A total of five rate expressions were formed, which were as a result of; methanol adsorption, Triglyceride adsorption, Formation of the complex, Surface reaction and Glycerol desorption. Evaluation of best fitting model and parameter estimation was done using the nealder simplex least square optimization algorithm with the aid MATLAB software. The result from the regression analysis …

Part 2: Proposed Buckling Factor For Columns In Braced And Unbraced Frames With Composite Girders, S.A. Eltawil, N.S. Mahmoud, S.M. Abdrabou

Mansoura Engineering Journal

The influence of composite girders on the modified buckling factor for columns was investigated in both braced and unbraced frames. The composite girders' end conditions were represented as rigid and hinged . Furthermore, based on the proposed stiffness parameter, the derived formulation follows the same assumptions as the standard effective length factor (K-factor). Moreover, the suggested buckling factor equations for composite girders in braced and unbraced frames were obtained using the slope-deflection method. Concerning the unbraced frame, the proposed buckling factor of columns restrained by the composite girder improves the effective length calculation and makes for a more accurate and …

Gravimetric Geoid For Egypt Based On Properly Application Of Helmet's Method Of Condensations With Window Remove-Restore Technique, Atef Makhloof, Hussein A. Abd-Elmotaal, Mostafa Ashry

Mansoura Engineering Journal

This study uses the window-method for merging the gravity field wavelengths inside the remove-restore technique (RRT) to get the gravimetric geoid for Egypt using Helmert's models of condensation. In this case, the window approach (Abd-Elmotaal and Kühtreiber, 2003) was utilized to avert taking the topographic-condensation masses into account twice inside the data frame. A gravimetric geoid for Egypt has been calculated utilizing Helmert's first and second condensations approach and Airy- Heiskanen model. Within the context of the geoid computation, a thorough comparison between the various Helmert approaches and Airy-Heiskanen has been made. The comparison uses the estimated geoid indicators before …

A New Planning Proposal For Achieving Residents’ Thermal Comfort In Hot Arid Climate- Based On Simulation Model, Mohamed A. Eid, Randa M. A. Mahmoud, Amr Sayed Hassan Abdallah

Mansoura Engineering Journal

This paper aims to propose a new planning approach that achieves residents' thermal comfort inside the courtyards of residential complexes based on the improvement of the urban canyon ratio in the current residential complex in New Assiut city as a base case, including their role in boosting social interaction and improving residents’ Outdoor thermal comfort (OTC) and courtyard air quality. This new planning proposal is based on the planning of old Arab cities that encourages liveability, walkability, social interaction, and sustainability. Then, improvement of urban canyon ratios for the new planning proposal was simulated and optimized using ENVI-met 5. Eight …

A Nonstandard Finite Difference Numerical Solution For The Equal-Width Wave Equation, H. A. Elagamy, Z. F. Abushaeer, Galal I. El-Baghdady

Mansoura Engineering Journal

This study aims to develop an unconditionally stable numerical scheme for the equalwidth wave equation. An unconventional finite difference discretization is employed to accomplish this. The John von Neumann methodology is used to examine the stability of the suggested method, and the suggested scheme's precision is established. Numerical results with comparisons are shown to demonstrate the viability of the suggested approach for the equal-width wave equation.

Integrated Water Quality Assessment In Damietta Branch Intakes At Dakahlia Governorate, Egypt, M. Elbagoury, H. Omara, Bakenaz A. Zeidan

Mansoura Engineering Journal

The water quality of the Damietta branch evaluated and assessed using the water quality index (WQI), including twenty-one physical, chemical, and biological parameters (Temperature, Turbidity, Chlorine, Electrical Conductivity, Total Dissolved Solids, pH, Chloride, Total Alkalinity, Total Hardness, Dissolved Oxygen, Chemical Oxygen Demand, Biological Oxygen Demand, Nitrogen, Sulfate, Calcium, Total phosphorus, Sodium, Potassium, Nitrate, Magnesium, and Total Coliform) measured at eleven different drinking water intake stations in Dakahlia governorate along the Damietta branch of the Nile river for four successive years from 2018 to 2021. The scale for evaluating the water quality of the Damietta branch of the Nile River is …

Exact/Partial Cipher-Text Retrieval On The Encrypted Cloud Database Using Sckha Algorithm, Samia Souror, Mohammed Badawy, Nawal El-Fishawy

Mansoura Engineering Journal

Searchable encryption techniques are intelligent tools that attempt to solve the challenge of querying stored data on untrusted cloud servers while preserving data confidentiality. This paper proposes simple, powerful, and practical Searchable Symmetric Encryption (SSE) scheme which capable of executing SQL (Structural Query Language) queries over encrypted cloud databases. Our scheme improves the efficiency of the search over encrypted data by using the SCKHA (Symmetric Cipher based on Key Hashing Algorithm) algorithm instead of using the bloom filter technique which causes the problem of the false positives. We built a complicated index structure for the encrypted data by combining the …

M²Brtpc: A Novel Modified Multimodal Biometric Recognition For Toddlers And Pre-School Children Approach, Mahmoud Bahzad, Labib M. Labib, Mostafa Elhosseini, Mahmoud Badawy

Mansoura Engineering Journal

A biometric system based on the characteristics of adults recently achieved an outstanding result. Over the last few decades, many applications have been developed for adults, such as fingerprint, face, iris, and hand-vein. Infant identification suffers from many problems and does not enroll all possible ages. Identifying children using one or any biometric features is the first step in ensuring that they are recognized before the law and that their rights are guaranteed. From another perspective, this prevents baby swaps in hospitals, Identifying Missing Children, and Civil ID Programs. This paper introduces an approach for Multimodal Biometric Recognition for Toddlers …

Low Loss Hybrid Plasmonic Waveguide With Graphene Multilayers, Hala Mossad I. Hassan, Nihal F. F. Areed, H. A. El-Mikati, Mohamed Farhat O. Hameed, S. S. A. Obayya

Mansoura Engineering Journal

A proposed design of graphene-based hybrid plasmonic waveguide is presented to improve the propagation length with a good confinement. The suggested design has multilayers of SiO2–graphene/ SiO2– GaAs – graphene/ SiO2. The full vectorial finite element method (FVFEM) is used to study the effective index (neff), propagation length (Lp), and normalized effective mode area (Aeff) of the supported hybrid plasmonic modes. In this investigation, the structure geometrical parameters are studied to achieve an ultra-small effective mode area with low propagation loss. The numerical results show that long propagation length of 138 µm at frequency of 3THz is achieved with normalized …

Performance Of Geopolymer Mortar Using Developed Dry Geopolymer-Cement By A Combination Of Alkaline Solid Activators, Mariam Farouk Ghazy, Metwally Abd-Allah Abd-Elaty, Sara Mohamed Mostafa

Mansoura Engineering Journal

This experimental study investigates the possibility of using a combination of solid activators to produce dry powder geopolymer cement. Fly ash (FA) and/or ground granulated blast furnace slag (GGBS) were employed as precursors. Sodium metasilicate pentahydrate (NSP), calcium hydroxide (CH) and sodium carbonate (NC) were used as alkaline solid activators. Meanwhile, the effect of using a combination of solid activators to prepare one-part geopolymer mortars was studied by using three different curing methods and compared with the traditional corrosive alkali solutions that are used as activators in two-part geopolymer mortar, and also compared with Portland cement (PC) mortar mix. Fresh …

Effect Of The Natural Pozzolanic Basalt On High Strength Concrete, Mohamed Sayed Mohamed Moawad, Abd El-Rahman Ragab, Shimaa Younis

Mansoura Engineering Journal

Concrete is important construction material in civil applications. Portland Cement (PC) is considered the essential component material to produce the concrete, especially in high-strength concrete. Around ranging from 5-7% of CO2 was generated during PC production. Consequently, the concrete and PC production are change in the environment. So; it has become very important for the construction industry to focus on minimizing environmental pollution, energy consumption reduction. Several pozzolanic cementitious materials can be added as a fractional replacement of cement in concrete to reduce PC impact on environmental pollution. Pozzolanic materials include PC as one of its main components as well …

A Standard Model Of Inpatient Spaces From The Perspective Of Visual Comfort In Daylight, Dalia H. Tamamm, Ezzat A. Morghany, Khaled S. S. Abdelmagid

Mansoura Engineering Journal

Visual comfort is one of the most important factors in achieving indoor environmental quality due to its great impact on human health, especially in hospitals, schools, and administrative buildings. It also enhances the health and well-being of patients within the spaces of their stay in hospitals. Previous studies did not address visual effects that support recovery, psychological and physical comfort of patients within their spaces. The problem of this paper is to seek an answer to a central question about the characteristics and specifications of the standard model of inpatient spaces from the perspective of Visual Comfort in daylight. Therefore, …

The Role Of Design Flexibility In Raising The Efficiency Of Social Housing In Egypt, Asmaa Elsayed Shawky, Asmaa N. Elbadrawy, Nanees A. El-Sayyad

Mansoura Engineering Journal

The housing and real estate investment sector in Egypt has witnessed remarkable prosperity in recent years, despite the presence of accompanying problems such as population increase and political and economic problems. Government agencies have given great importance to the issue of providing adequate housing, especially for low-income and young people, in all development plans. From this point of view, this study was done with the aim of solving the problem of limited spaces in social housing by using design flexibility as one of the directions to solve these problems. Most of the users of these dwellings find it difficult to …

Integrative Software Design For Hospital Information Systems, Esraa M. Hashem, Mahmoud F. Y. Shalaby, Mai S. Mabrouk, Samir.Y. Marzouk

Mansoura Engineering Journal

The Hospital Information System is a huge, integrated system that meets these needs. The primary objective of any hospital information system is to produce high-quality and timely reporting for evidence-based decisions and interventions. The electronic health record is essential in creating uniform data formats and terminology for both corporate and public sector reporting needs. In this study, we design a hospital information system that focuses on the tools, and techniques necessary to improve the gathering, archiving, retrieval, and application of information in biomedicine and the healthcare industry. With the intention of bringing about progress, the idea of a paperless hospital …

Genetic Algorithm Theory In Simulation Programs As A Tool For Improving The Environmental Performance Of Office Buildings, Somaia Mohamed Arafa, Esraa Mohamed Elazab, Nanees Abd Elhamid Elsayyad

Mansoura Engineering Journal

Globally, a large proportion of a building's energy is consumed to achieve thermal comfort, as promoting energy efficiency and environmental sustainability of buildings is an important global goal. Therefore, the new building regulations are geared explicitly toward energy-saving projects. However, there are usually many competitive priorities, such as maximizing energy use in office buildings, leading to the complex multi-objective optimization topic. The main objective of this research was to reduce the energy consumed for cooling load in the office buildings in the city of Cairo, which is located in a hot desert climate. This was achieved by optimizing ten different …

Dynamic Architecture As An Approach To Educational Building Development, Sara Hamed Nour, Medhat Samra

Mansoura Engineering Journal

The dynamic design of our architectural environment today has become a necessity as scientific and technological development is accelerating. Since education is the basis for the advancement of society, the architecture of educational buildings must keep pace with that development. The traditional learning spaces are no longer suitable for educational curricula and the modern learning mechanism, they need dynamism, flexibility, multi-functionality, and response to the surrounding environment changes and user desires. The basis of the research is to design our educational buildings in a dynamic manner that works on the following:

• Creating a modern educational environment with flexible, versatile …

Architectural Education And Targeted Skills An Evaluation Study Of Scientific Research Influence As Of Mechanisms Of Teaching And Learning, Heba Mahrous Ali

Mansoura Engineering Journal

The Engineering Study offers students an effective and technologically built education, considering the future prospects of science and technology. It also provides the technical knowledge and skills necessary to solve problems that allow future challenges to be addressed. Architecture is based on knowledge and skills in humanities, physics, humanities, and fine and applied arts. Therefore, what is taught about engineering subjects affects the extent of students' perception and this is evident in the extent of its interaction in the form of examinations or research. Scientific research is of great importance in he understanding of the student's understanding of scientific material. …

Mechanical And Tribological Properties Of Al2024/Al2o3 Functionally Graded Spur Gears Synthesized By Centrifugal Casting Process, Samar A. Abdelfattah, Magdy S. Ghattas, Tawakol A. Enab

Mansoura Engineering Journal

The mechanical and tribological properties of spur gears are important because they can affect the efficiency and wear life of these gears. Thus, this study's primary goal is to use functionally graded material (FGM) to enhance the properties of Al2024 aluminium alloy spur gears. The mechanical and tribological properties of aluminium alloy Al2024 with graded Al2O3 reinforcement particles spur gears synthesized by the vertical centrifugal casting (VCC) process were investigated experimentally. Different weight percentages were used for the reinforcement particles, including 0, 2, 5, and 10 wt.% of Al2O3. Microstructural and mechanical properties were determined by SEM, EDS, and hardness …

Stripe Malls (A Comparative Study Between The Experience Of The Private And Government Sector In Sheikh Zayed City), Ahmed Mahmoud Nagi

Mansoura Engineering Journal

This paper discusses the phenomenon of the spread of strip malls on the highways surrounding the cities, by comparing the experience of the private sector represented by (The Stripe) on the Dahshur link road and the experience of the government sector represented by (Chill Out) on the 26th of July corridor in surrounding area of Sheikh Zayed City. In spite of the spread of e-commerce, which has negatively affected large malls, strip malls are constantly increasing, as they have many competitive advantages. The study aims to evaluate this incoming urban phenomenon, its suitability to Egyptian society, and its impact on …

Study To Develop A Course Of History And Theories Of Architecture At Elgazeera Higher Institute Of Engineering And Technology In Mokattam, Ahmed Mahmoud Nagi, Dalia Shalaby Eldamaty

Mansoura Engineering Journal

Modern technical developments have changed many countries' concepts, theories, and study plans for architecture programs. These developments have provided great possibilities through which it was possible to shorten effort and time, therefore new specifications and skills appeared that the architect required to integrate into the labor market, which in turn imposed Additional requirements. These overlapping data raise many questions about architecture programs in general, the syllabus of history and theories of architecture, and the extent of their response to these developments and their response to the labor market. Here lies the importance of the research. The study and the extent …

Selecting The Optimal Formwork System For Horizontal Elements, Alaa Allam, Emad Elbeltagi, Mohamed Naguib Abouelsaad, Mohamed E. El Madawy

Mansoura Engineering Journal

Various types of formworks are available in the market for construction of cast-in-place concrete structures. Formwork has a significant impact on both construction time and cost. As such, decision making on the optimal formwork system is difficult and timeconsuming for designers or planners particularly for high-rise buildings, where any reduction in the cost of single-story formwork significantly decrease total construction cost. Formworks must be designed effectively as numerous accidents have happened as a result of poor design decisions. This article presents a Genetic Algorithm optimization model to select the optimal formwork system among Cuplock, Shore brace and Props systems that …

Evaluation Of The Risk Factors Impacting The Cost Overruns In The Construction Of Roads In Egypt During The Covid-19 Pandemic, Yasser A.S Gamal, Elsayed Mohamed Abd Allah, Mina Maged, Mahmoud Enieb

Mansoura Engineering Journal

Cost overruns are a common problem in the global construction industry, which affects the development of road construction, particularly in developing countries. Moreover, many risk factors in road construction might result in project cost overruns, particularly during COVID-19. So, the research aimed to look into the new risk variables' severity when a coronavirus infection was present. The primary goal of the study is to identify the most important risk variables affecting the construction of roads in Egypt, especially during COVID-19 to lessen the likelihood and impact of those risks. The likelihood and effects of the identified risks were determined by …

Mechanical And Impact Properties Of Fibrous Rubberized Geopolymer Concrete, Metwally Abd Allah Abd-Elaty, Mariam Farouk Ghazy, Omar Hussein Khalifa

Mansoura Engineering Journal

Geopolymer concrete significantly contributes to reducing harmful emissions by reducing the cement industry and replacing it with by-product materials produced by different industries. Geopolymers have enhanced mechanical properties compared with cementitious products, however, their ductility and impact resistance tend to be relatively low. Additionally, the used rubber tires provide a significant environmental risk. Consequently, this research's primary objective is to develop and investigate improved rubberized geopolymer concrete concerning ductility and impact resistance. Reusing Crumb Rubber (CR) as an alternative to natural sand was investigated to meet these goals using volume replacement ratios of (3%, 6%, and 9%). Additionally, different volume …

Effect Of Different Nanoparticles Spp Grating On Gaas Pin Photodetector Performance, Nada Abdelaziz, Eman Abdelhalim, Waleed M. Gaballah, Ahmed S. Samra

Mansoura Engineering Journal

GaAs is currently one of these compound semiconductors' most preferred options for use in photodetector and photovoltaic applications as its increased mobility of electron and states density, in addition to its lower temperature coefficient when compared to silicon [Si]. Different metallic concerning wavelength of light and nanostructures geometry, subwavelength slit structures have plasmonic impacts and could develop a high light intensity region. All of frequencies within the spectrum of interior visible are absorbed inside the bonds, and as a result of their empty states of electron, they can move across the metal by electron transition. In this work, GaAs PIN …

Fluid-Structure Interaction Adopting Full Water Hammer Model, A. O. Abdelbaki, A-R. Abdel-Rahim, Mostafa. M. Awad, W. M. Elawady

Mansoura Engineering Journal

A full water hammer model is developed and coded in the Mathcad software environment. The developed model constitutes a general platform for studying the water hammer transient incorporating the most legitimate parameters that affect the phenomenon. In this study, the fluid-structure interactions during water hammer transients were investigated through the affecting parameters such as pipeline material hysteresis behavior what is so-called viscoelasticity (VE) behavior, and unsteady friction (UF) with different coupling mechanisms such as friction coupling, Poisson coupling, and junction coupling which may be due to a free-to-move valve for system with a reservoir-pipe-valve. Based on the numerical results corresponding …

Analysis Of Stress And Strain Concentrations Around An Elliptical Hole Via Finite Element And Response Surface Methodology, Somaya M. Aiad, Tawakol A. Enab, Mona A. Aboueleaz

Mansoura Engineering Journal

The current investigation aims to study the stress and strain concentration factors (Kσ and Kε) around a central elliptical hole in a rectangular plate under uniaxial and biaxial loads. Finite element and response surface methods (FEM and RSM) were used to predict the values of Kσ and Kε in isotropic and orthotropic material rectangular plates. Thus, the finite element models were built using ANSYS commercial FEM software to obtain the values of Kσ and Kε for some designed cases. Moreover, the response surface methodology was applied to limit the required number of FEM runs based on the number of variables. …

The Role Of Health Crises In Managing The Workflow In Emergency Departments' Cases Study Egyptian Hospitals, Alshaimaa Hussein Mohammed

Mansoura Engineering Journal

Hospitals and emergency departments have faced numerous challenges as they are considered the first line of defence when receiving patients. It also serves as the first detector of epidemiological conditions to which men turn when medical situations appear. In this regard, there are no Egyptian studies available for evaluating the emergency department. The research discussed the new requirements in workflow that necessitate an assessment of the status quo of emergency departments, especially in Egyptian hospital design. The study examined several emergency departments in Egypt. In this regard, the study discusses various methods and precautions taken in hospitals during epidemics, and …

Effect Of Elevated Temperatures On The Properties Of Concrete Containing Metakaolin, Ahmed F. Abdullah, Mohamed M. Rashwan

Mansoura Engineering Journal

The influence of elevated temperatures on the properties of concrete is significant for study on fire resistance as well as for identifying how isolated vessels, chimneys, and containers in nuclear reactors respond under service conditions. The present experimental investigation assesses the properties of concrete containing Metakaolin (MK) that has been exposed to elevated temperatures. For this purpose, seven concrete mixes were prepared, including one control mix, three mixes containing metakaolin (10, 15, and 20%) as a replacement by weight of cement. And three other mixes in the same proportions as a cement additive. After 28 days, the specimens exposed to …

Machine-Learning Based Stacked Ensemble Model For Accurate Multi Classification Of Cbc Anemia, Asmaa Mohamed El-Boghdady, Sherif Kishk, Mohamed M Ashour, Eman Abdelhalim

Mansoura Engineering Journal

Anemia Disease (AD) is one of the most common blood problems in the world. According to the World Health Organization, it leads to lack of oxygen and red blood cells. The problem of classifying anemia is crucial in prescribing an appropriate treatment plan. Unfortunately, it is difficult to accurately diagnose the type of anemia as early as possible in order to properly treat the patient. Such a diagnosis can be complicated by the exponential increase in patient numbers, priority rules set by hospitals, and issues of access to adequate medical professionals. This paper proposes the use of a computer-based model …

Enhancement In Strength Parameters Of Mortar By Application Of Bacillus Bacteria, A.A. Maaty, M.F. Ghazy, Y. El-Halmouch, G.R. Gadallah

Mansoura Engineering Journal

Cracks in concrete often occur because of environmental factors like moisture, chemical attacks, and temperature changes. This study investigates utilizing microbial induced calcite precipitation (MICP) to address concrete cracking. Bacillus Sphaericus strain is introduced into cement mortar to enhance its physical and mechanical properties, focusing on crack healing. (MICP) microbial induced calcite precipitation reduces water absorption and capillary coefficient by filling cracks with calcium carbonate using bacterial nutrients. After a duration of 90 days, the bacterial samples exhibit a noteworthy decrease in both capillary action and water absorption when contrasted with the control samples. The bacterial mortar demonstrates accelerated progress …