@article { author = {Abolsaad, Safa and ElMakawy, Mohammed}, title = {Zero Energy Buildings as an Approach for Sustainable Urban Development in the Egyptian Desert.}, journal = {MEJ- Mansoura Engineering Journal}, volume = {42}, number = {3}, pages = {1-11}, year = {2020}, publisher = {Mansoura University, Faculty of Engineering}, issn = {1110-0923}, eissn = {2735-4202}, doi = {10.21608/bfemu.2020.98112}, abstract = {The high people concentration of Egypt in area not exceeds by 6% from the area of Egypt has led to many, environmental, economic, and social problems. Therefore, establishment of sustainable urban development in Egyptian desert out of the crowded valley seems obligation or what we can call no choice. Due to the harsh nature of desert, these sustainable urban developments need big amount of energy to operate it. Egypt as one of the developing countries faces many crisis of energy production which eliminate establishment of these sustainable urban development. In the recent years, the concept of zero energy buildings has highly emerged as a new approach for sustainable buildings which depend on renewable energy resources, therefor the design of zero energy buildings ZEBs is proposed as an approach for sustainable urban development in Egyptian desert}, keywords = {Sustainable Design,Zero energy building ZEB,renewable energy,Sustainable urban development}, url = {https://bfemu.journals.ekb.eg/article_98112.html}, eprint = {https://bfemu.journals.ekb.eg/article_98112_c169aaf41c9bbfaa23849a8e369d5dd1.pdf} } @article { author = {Nasr, Eman and ElSaied, Mohamed and El-Eashy, Alaa}, title = {Sustainability Constrains of Social Housing Projects in Egypt.}, journal = {MEJ- Mansoura Engineering Journal}, volume = {42}, number = {3}, pages = {12-18}, year = {2020}, publisher = {Mansoura University, Faculty of Engineering}, issn = {1110-0923}, eissn = {2735-4202}, doi = {10.21608/bfemu.2020.98120}, abstract = {Egypt -as many developing countries- is facing environmental, economic and social constrains. Also facing the negative impact of population growth. And the need to Provide safe and adequate housing for low income people to create an environment of social justice. Lack of affordable housing is recognized as one of the fundamental problems in urban areas in developed and developing countries alike. Egypt should adapt sustainable solutions to curb population growth and its negative impact on the environment such as the increasing demands made on natural resources, man-made and urban expansion over agricultural land. The Main Objective of this paper is to: examine the potential of adopting sustainable social housing projects in Egypt to overcome the country’s short-term future challenges. Where we could rely on as a nucleus for the new urban communities facing environmental, economic and social challenges. The research select affordable housing projects which present the three Axis of the national housing project (2005-2012) which are: "Othman Housing (first care housing), Graduate Villages in Burullus (rural housing) and Harm city (private sector initiative)" to study their issues and how they achieved the program objectives. To identify Constrains, opportunities and potentials that Egypt should widely discuss to determine the most appropriate during the construction of the current social housing project (The million units project).}, keywords = {Sustainability,Social Housing,Affordable,Housing}, url = {https://bfemu.journals.ekb.eg/article_98120.html}, eprint = {https://bfemu.journals.ekb.eg/article_98120_819c1e857ecde65b545ac6513016427b.pdf} } @article { author = {Abd Elghffar, Mahmoud and Mosaad, Mohamed and El-Etriby, Hisham}, title = {Photocatalytic Degradation of Chlorpyrifos by Using Synthesized Nano Titanium.}, journal = {MEJ- Mansoura Engineering Journal}, volume = {42}, number = {3}, pages = {1-6}, year = {2020}, publisher = {Mansoura University, Faculty of Engineering}, issn = {1110-0923}, eissn = {2735-4202}, doi = {10.21608/bfemu.2020.98052}, abstract = {Chlorpyrifos is one of the most popular used organophosphorus pesticides because of its low cost and high efficiency in controlling pests in agriculture. Presence of pesticides in aquatic environments causes serious problems to living organisms. Photocatalysis considers an effective route for the removal of resistant hazardous organic wastes from aqueous solutions. In this study, the photocatalytic degradation of chlorpyrifos in aqueous solution by using synthesized prepared nano titanium dioxide (TiO2) by sol-gel method was investigated under various operational conditions such as catalyst dose, pH of the solution, initial concentration of chlorpyrifos and illumination time. Energy dispersive X-ray Spectroscopy (EDX) and Thermo gravimetric analysis (TGA) were used for the nano TiO2 characterization. The results depicted that the photocatalytic degradation of chlorpyrifos was strongly influenced by the operational parameters. The photocatalytic degradation decreased with increasing the initial concentration of chlorpyrifos. Neutral pH of the solution is the optimum for the photocatalytic degradation of chlorpyrifos. The photocatalytic reactions approximately followedPseudo-first order kinetics and the reaction rate was inversely related to the feed concentrations. A model was performed with regression coefficient of 88.45 % to express the relation between removal efficiency and operational conditions.}, keywords = {chlorpyrifos,Operational conditions,photocatalysis,Photodegradation,Titanium dioxide}, url = {https://bfemu.journals.ekb.eg/article_98052.html}, eprint = {https://bfemu.journals.ekb.eg/article_98052_4ba58b86dd6da3a41aac440c1585cc77.pdf} } @article { author = {Elsheikh, Mahmoud and Guirguis, Hany and Amer, Abd EL-rahman}, title = {Removal of Iron and Manganese from Groundwater: A Study of Using Potassium Permanganate and Sedimentation.}, journal = {MEJ- Mansoura Engineering Journal}, volume = {42}, number = {3}, pages = {7-12}, year = {2020}, publisher = {Mansoura University, Faculty of Engineering}, issn = {1110-0923}, eissn = {2735-4202}, doi = {10.21608/bfemu.2020.98067}, abstract = {This paper studies the efficiency of iron (Fe+2) and manganese (Mn+2) removal from groundwater using oxidation by potassium permanganate followed by filtration and using conventional treatment consisting of flocculation, sedimentation and filtration. Experiments were done for different combinations of Fe+2 and Mn+2 concentrations. The obtained results show that Potassium Permanganate (PP) gives good results. By using PP dose equals to half of the theoretically required one, it can remove up to 100% and 90% of iron and manganese respectively over different tested concentrations at pH=7.0. Increasing rate of filtration decreases the Mn+2 removal efficiency obviously.    Sedimentation is required when combined concentrations of iron and manganese are greater than 5.0 ppm to reduce filter rapid clogging. Using conventional treatment with adding Alum, flocculation, sedimentation and filtration can remove up to 97% and 18% of iron and manganese respectively. Using PP in addition to alum enhances manganese removal but decreases iron removal. However, using Alum with raising pH to 10 leads to 100% and 95% of Fe+2 and Mn+2 removal and increases filter working period}, keywords = {iron,Manganese,potassium permanganate,Alum,filtration,Sedimentation}, url = {https://bfemu.journals.ekb.eg/article_98067.html}, eprint = {https://bfemu.journals.ekb.eg/article_98067_cf3c352e9d752cba135fef99fd8d4d3c.pdf} } @article { author = {Elashram, Mohamed and Ibrahim, Ahmed}, title = {Application of Fuzzy AHP on Determining the Dewatering Main Criteria Weights in Egypt.}, journal = {MEJ- Mansoura Engineering Journal}, volume = {42}, number = {3}, pages = {13-20}, year = {2020}, publisher = {Mansoura University, Faculty of Engineering}, issn = {1110-0923}, eissn = {2735-4202}, doi = {10.21608/bfemu.2020.98132}, abstract = {Selecting an appropriate dewatering system is a key for successful completion of a project. The selection process depends mainly upon the subjective opinion of construction practitioners. Therefore, this experience has to be documented and stored in the company database for usage in future projects. However, such an evaluation involves a complex decision-making process associated with numerous uncertainty factors, imprecise information and judgments. The Analytical Hierarchy Process (AHP) has been widely applied to evaluate alternatives related to multiple decision criteria. Nevertheless, the AHP is incapable of dealing with the inherent subjectivity and ambiguity existing in the mapping of the decision-maker judgment to exact numerical values. This paper introduces an attempt to store the experts’ subjective experience using a fuzzy AHP approach in an attempt to determine the dewatering main criteria weights. The approach employs triangular fuzzy numbers and the α-cut concept to better represent the degrees of uncertainty held by the decision-maker.}, keywords = {Dewatering Systems,dewatering construction method,Fuzzy sets,Fuzzy AHP Analysis,Fuzzy analytical hierarchy process,Alternative Evaluation}, url = {https://bfemu.journals.ekb.eg/article_98132.html}, eprint = {https://bfemu.journals.ekb.eg/article_98132_7f18532b5f958330a9ba9e8dcad0cfa4.pdf} } @article { author = {Ghazy, Mariam and Taman, Mohamed and El Ahwal, Rana}, title = {Properties of Reactive Powder Concrete and its Utilizing as a Repair and Strengthen Materials.}, journal = {MEJ- Mansoura Engineering Journal}, volume = {42}, number = {3}, pages = {21-29}, year = {2020}, publisher = {Mansoura University, Faculty of Engineering}, issn = {1110-0923}, eissn = {2735-4202}, doi = {10.21608/bfemu.2020.98090}, abstract = {This investigation aimed to study two phases. (Phase I) was to study the properties of reactive powder concrete (RPC) produced by two different curing regimes, namely, water curing at 20 oC and hot water curing at 60 oC. Moreover, the effect of using the RPC as a repair and strengthening materials (combined system) was also evaluated (Phase II). Different parameters include water to binder ratio and fiber types were considered. Based on the test results of the primary study (Phase I) of the RPC mixes, mixes of adequate flow and high compressive strength (with water curing 20 oC) were selected and used for both strengthening and repairing processes. The RPC as repair materials were evaluated by the compressive, flexural and bond (splitting and slant shear) strengths. The test results of Phase I showed that the RPC with compressive strength up to 110 and 140 MPa can be obtained in water curing at 20 oC and hot water curing at 60 oC, respectively. The test results of Phase II showed that the RPC displays excellent repair and retrofit potential on compression, flexure strengthening and possesses high bond strength as compared to substrate normal concrete (NC). The ratio of the increase of compressive strength of cylindrical specimens with 10 and 25 mm of wrapping with RPC are in the range of 25% to 114% and 42% to 142%, respectively as compared to substrate NC.            }, keywords = {Reactive Powder Concrete,concrete properties,repair materials,Wrapping,slant shear strength}, url = {https://bfemu.journals.ekb.eg/article_98090.html}, eprint = {https://bfemu.journals.ekb.eg/article_98090_fbec096687e0a97263fc4b5a243114dc.pdf} } @article { author = {Mohamed, Ahmed and Hegazi, Ahmed and Sultan, Gamal}, title = {Effect of Fine Stone Bed Layer Thickness on the Solar Still Performance.}, journal = {MEJ- Mansoura Engineering Journal}, volume = {42}, number = {3}, pages = {1-7}, year = {2020}, publisher = {Mansoura University, Faculty of Engineering}, issn = {1110-0923}, eissn = {2735-4202}, doi = {10.21608/bfemu.2020.98094}, abstract = {In this work, an experimental study has been conducted on a solar still to investigate the influence of stone bed layer thickness on the productivity of the solar still. These present experimental study involves two identical solar stills: one of the stills is conventional and the other has a layer of fine stones on the base of the still. The fine stones were divided into three layers. Each experiment starts without stone layer. Then readings were taken from the still for one stone layer, two stone layers and three stone layers on the basin. The thicknesses of this layers are 10mm, 15mm and 20 mm, respectively.  The experiments were conducted at Mansoura University, Egypt (31° 04 ′N, 31° 21 ′ E), durin g November month, 2016. Temperatures at different locations in the still (water in the still, glass cover surface, stone and air – vapor mixture) are measured and recorded with time. In addition, solar radiation, ambient temperature and amount of distillated water are recorded during the experiments at various operating days. The present results indicated that the enhancement of 3.79%, 7.06% and 11.8% for one, two and three fine stones bed layers, respectively more than the conventional still. Also, it was showed that the efficiency was highest with the maximum stone bed thickness.}, keywords = {Solar still,black stones,Desalination}, url = {https://bfemu.journals.ekb.eg/article_98094.html}, eprint = {https://bfemu.journals.ekb.eg/article_98094_d926dc5dc171626e84905ca34e43cda1.pdf} } @article { author = {Naeim, Noha and Elkaseer, Ahmed and Abd El-Hafez, Hassan and Nassef, Ahmed}, title = {Experimental Investigation of Single Point Incremental Sheet Metal Forming of Aluminum 6061.}, journal = {MEJ- Mansoura Engineering Journal}, volume = {42}, number = {3}, pages = {8-13}, year = {2020}, publisher = {Mansoura University, Faculty of Engineering}, issn = {1110-0923}, eissn = {2735-4202}, doi = {10.21608/bfemu.2020.98107}, abstract = {This paper presents an experimental assessment of the factors affecting the Single Point Incremental Forming (SPIF) process aiming to characterize their influence when forming Al 6061 sheets. The experimental trials were undertaken at different levels of incremental depths, feed rates, and spindle speeds and the process responses were the obtainable surface roughness and thinning. The results showed that the incremental depth has a significant effect on the surface roughness and feed rate found to be the second effective parameter. Also, thinning was highly dependent on the applied spindle speed. However, the results revealed that the stretching of the material prominently increased with the increase of feed rate up to a certain limit (1000 mm/min), then the stretching slightly decreased with the further increase in the feed rate.}, keywords = {Single Point Incremental Forming,Dieless formingProcess,Process parameters,Thinning, SurfaceRoughness,Aluminum 6061}, url = {https://bfemu.journals.ekb.eg/article_98107.html}, eprint = {https://bfemu.journals.ekb.eg/article_98107_af39a71f1e767dade99f7dcdd8a373eb.pdf} } @article { author = {Yousef, Ali and Ibrahim, Hamed and Abo-elyousr, Farag and Mohamed, Moayed}, title = {Direct Power Control of PV-Grid Connected Using Artificial Neural Network.}, journal = {MEJ- Mansoura Engineering Journal}, volume = {42}, number = {3}, pages = {1-8}, year = {2020}, publisher = {Mansoura University, Faculty of Engineering}, issn = {1110-0923}, eissn = {2735-4202}, doi = {10.21608/bfemu.2020.98136}, abstract = {In this research, an artificial neural network (ANN) controller design for connecting photovoltaic (PV) power system to the grid is introduced. The proposed controller is trained over a wide range of operating conditions. Time domain simulations of a grid-tied three-phase inverter by an active power injection subjected to major disturbance is investigated. To improve the superiority of the proposed controller, the performances of the developed ANN is compared with a conventional PI controller. The simulated results prove the capability of the proposed ANN controller to enhance the PV system performance over a wide range of operating conditions. }, keywords = {Photovoltaic System,grid connected inverter,Neural network,power flow control,Robust Control}, url = {https://bfemu.journals.ekb.eg/article_98136.html}, eprint = {https://bfemu.journals.ekb.eg/article_98136_fdffdd11994c9c537a5d343a5d8eb2ac.pdf} } @article { author = {Ismael, Islam and Saeed, Mohammed and Kaddah, Sahar and Abdelkader, Sobhy}, title = {A Novel Algorithm for Day-Ahead Real Time Pricing for Energy Management in Smart Grid.}, journal = {MEJ- Mansoura Engineering Journal}, volume = {42}, number = {3}, pages = {9-16}, year = {2020}, publisher = {Mansoura University, Faculty of Engineering}, issn = {1110-0923}, eissn = {2735-4202}, doi = {10.21608/bfemu.2020.98142}, abstract = {The main objective of Energy Management is to produce demanded power with least cost and least environmental effect. This paper presents a novel algorithm for reshaping the load demand profile via day ahead hourly pricing. The day ahead hourly price schedule is determined in such a way that encourages customers to modify as much as possible of their consumption profile according to renewable energy availability. The proposed technique is composed of three optimization problems based on Non Linear Programming (NLP) solver using Sequential Dynamic Programming (SDP) algorithm. The first one is to determine the optimal consumption pattern for each load type that improves the utilization of the conventional generation through minimizing its peak to average ratio (PAR). The second is to determine the optimal price signal, which maximizes customer saving after following that optimal consumption pattern. The last one is the customer test for minimum consumption cost. The Performance of the proposed algorithm is verified by applying it to a low voltage benchmark of a smart grid with residential, commercial, and industrial loads. The simulation results proved the effectiveness of the new proposed technique for achieving optimal energy management}, keywords = {Energy Systems,Demand side management,Renewable energy sources}, url = {https://bfemu.journals.ekb.eg/article_98142.html}, eprint = {https://bfemu.journals.ekb.eg/article_98142_b440528ea6d69cfc7f814489ab694989.pdf} }