@article { author = {Eldaly, Kareem and Zaki, Nevin and El-Gezawy, Lamis}, title = {Sustainability in the Choice of Architectural Elements Coloring and its Relation to Natural Light Intensity in Internal Spaces of Psychiatric and Neurological Hospitals.}, journal = {MEJ- Mansoura Engineering Journal}, volume = {41}, number = {2}, pages = {1-8}, year = {2020}, publisher = {Mansoura University, Faculty of Engineering}, issn = {1110-0923}, eissn = {2735-4202}, doi = {10.21608/bfemu.2020.98972}, abstract = {Color selection is one of the key areas of interior design. The coloring is an art that has its aesthetic moods, criteria, and applications, in addition to its different contrasting functions. At the same time, color has its pure scientific origins and rules that are closely linked to light. Lighting has its critical importance in hospitals. A sufficient level of daylight is essential to carry out the necessary tasks. Carefully designed day lighting can transform the appearance of the ward and make it attractive, welcoming and even calming. The cost of patient treatment and hospital staff operating is considerable; therefore, measures to maximize performance through improved environments and saving energy by using sustainability principles in day lighting will be cost-effective. The primary objective of this research is to discuss the relationship between architectural elements coloring like (walls, floor, ceiling and furniture colors) and daylight intensity using computer-based building performance simulation (BPS) tools to create comparable varieties in mental hospital wards. The results of the study were figuring the optimum coloring for each architectural element based on the optimum daylight intensity while seeking to achieve sustainability into mental hospital wards}, keywords = {interior spaces,Sustainability,hospitals,Color criteria,Physiological impact and Daylight intensity}, url = {https://bfemu.journals.ekb.eg/article_98972.html}, eprint = {https://bfemu.journals.ekb.eg/article_98972_011c3502b8403bf8b64a7bb3861bbe44.pdf} } @article { author = {Bayoumi, Ysmine and Sheta, Sherief and Kalifa, Marwa}, title = {Emphasizing the Role of Craftsmanship in Urban Planning Interventions to Promote Tourism- Case Study Zaanse Schans, the Netherlands.}, journal = {MEJ- Mansoura Engineering Journal}, volume = {41}, number = {2}, pages = {15-23}, year = {2020}, publisher = {Mansoura University, Faculty of Engineering}, issn = {1110-0923}, eissn = {2735-4202}, doi = {10.21608/bfemu.2020.98978}, abstract = {This paper focuses on the importance of the crafts in documenting history, in addition to the strategies to integrate crafts in economic development plans. There is a need for exploring new development approaches to vitalize Egyptian economy and tourism. The research was oriented to developing tourism development plans that depend on crafts. Similar cases were analyzed where development strategies were carried out in a craftsmanship zone that resulted in turning them into international attraction destinations for crafts. The research attempts to develop a framework that can help formulating strategies for interventions in crafts area and assess challenges that can be faced to turn it into a craft tourism zone. The paper studied one example to support the applied method of the framework. By this solution, we can find a way to build our communities.}, keywords = {Crafts development,urban planning and Tourism promotion}, url = {https://bfemu.journals.ekb.eg/article_98978.html}, eprint = {https://bfemu.journals.ekb.eg/article_98978_45ea0e12413eb2798180cbd30367e520.pdf} } @article { author = {EL ELsbaay, Fawzia and Sheta, Sherief and El Badrawy, Asmaa}, title = {Development of the Use of Building Materials Systems as an Approach to Sustainable Architecture in Egypt.}, journal = {MEJ- Mansoura Engineering Journal}, volume = {41}, number = {2}, pages = {24-31}, year = {2020}, publisher = {Mansoura University, Faculty of Engineering}, issn = {1110-0923}, eissn = {2735-4202}, doi = {10.21608/bfemu.2020.98991}, abstract = {In recent decades, Building Technology has witnessed several and successive plethora which led to the development of many traditional building materials and the use of many modern materials within enterprises therefore  a lot of negative changes have taken place that have affected the ecosystem and the lack of sustainability of these facilities occurs, prompting a lot of designers and companies which are developing building Materials to think of re-development of modern building materials in order to achieve sustainable construction and compatibility with the environment according to  many of the architectural trends which call for Friendship(mutuality) with the environment as it can be called sustainable architecture as a response to the current conditions of the environment , pollution and human health issues, which in turn influenced the architectural and urban outcome . The research aims at the pursuit of sustainable architecture by developing the use of building materials and construction systems in a friendly manner with the environment. To achieve the goal, comparison of accredited universal archetypes from the green building organizations, has been done on the aspects of sustainability used in building materials concluded a set of recommendations that can be followed in order to let the system work in an integrated way under the umbrella of sustainable development and architecture in Egypt.}, keywords = {Building Materials,Sustainable Materials,sustainable construction systems}, url = {https://bfemu.journals.ekb.eg/article_98991.html}, eprint = {https://bfemu.journals.ekb.eg/article_98991_e9f0f733806153eceb468766f09ad15f.pdf} } @article { author = {Zebeda, Fatma and Sheta, Sherief and Moustafa, Wael}, title = {Knowledge Economy as a Planning and Development Tool for Future Cities in Egypt's Delta Region.}, journal = {MEJ- Mansoura Engineering Journal}, volume = {41}, number = {2}, pages = {32-42}, year = {2020}, publisher = {Mansoura University, Faculty of Engineering}, issn = {1110-0923}, eissn = {2735-4202}, doi = {10.21608/bfemu.2020.98995}, abstract = {The approach of urban planning that pursued by contemporary city and in its strategy that depend on the traditional economy became unsuitable to the nature of the changes in the modern world and not cope with the requirements and aspirations of the cities of the future which depend on the base of knowledge economy which characterized by affluence where increasing resources (knowledge) ، and decreasing costs a lot of use، in spite of the elative modernity of the field of knowledge cities, the methodology attempts to adopt the cities and institutions of the concept of a knowledge-based economy have been able to bring about radical changes and tangible results expressed itself in such a short period، and cities such as Boston, Shanghai and Maputo have been able to skip the conceptual stage to the level of analysis and application، and marketing and investment product which based on scientific research and education as a successful, pioneering knowledge cities reap the benefits of cognitive transition, foremost of which is the achievement of sustainable economic growth and regional leadership and support global competitiveness. This research seeks to provide a planning study of what should be the city of knowledge، and identifies the most important policies of the shift towards knowledge cities, urban and formats that have occurred in Strategic plans for those cities, since research suggests reconsideration of the strategic plans on which the Egyptian cities it be cities of knowledge, and through the adoption of plans cognitive strategy, is a knowledge-based economy based on these plans. The research also reviews some of the international experiences of the knowledge cities, inferred some of the lessons learned, and concludes which a research study of the situation of Egypt, shows the ranking of Egypt in the Knowledge Economy Indicators and Global Competitiveness with the study of the opportunities and the potential to improve the position of Egypt and   bring it to ranks of developed countries.}, keywords = {اقتصاد المعرفة,مدن المعرفة,الجامعات,ممرات التنمية,حدائق العلوم والتقنية}, url = {https://bfemu.journals.ekb.eg/article_98995.html}, eprint = {https://bfemu.journals.ekb.eg/article_98995_46bea8693f42c690c32992293e6176fa.pdf} } @article { author = {Nabil, Ahmed and Shokry, Rania}, title = {Extrapolate the Role of Urban Spaces and Methods of Development in the Era of Information Technology (Case Study of Urban Spaces within the Smart Cities).}, journal = {MEJ- Mansoura Engineering Journal}, volume = {41}, number = {2}, pages = {43-48}, year = {2020}, publisher = {Mansoura University, Faculty of Engineering}, issn = {1110-0923}, eissn = {2735-4202}, doi = {10.21608/bfemu.2020.98998}, abstract = {Urban Spaces is a true mirror of the conditions of economic, social, cultural and political community they represent the focal points of public life and the exercise of various activities in addition to its role in giving a distinguished architectural style of the city and each had a vacuum past his own personality, which meets the needs of its users, but that over time and as a result of the rapid development in lifestyle It disappeared role within the urban fabric of the city as the site of the interaction between man and his environment. Urban places are not only built area, but also include activities that users are given the goals of the space distinctive character in terms of size and function. Finding the entrance to the development of the Urban space in line with the local environment will return positive returns positive impact on the urban development of the city, and methods of urban use of information technology development or the so-called "Smart City Smart city" which aims to create sustainable and economic development, high quality of life, and are considered infrastructure for information and communication technology have a nervous system, and the organization of the interactions between components. But most of the establishment of smart cities initiatives focused on the use of technological applications in the transportation and delivery of services and urban management areas, but it did not address enough to use these applications in the design of urban spaces smart cities, so research aims to recognize the importance of smart urban spaces in urban infrastructure of the city and extrapolation of its role in the era of information technology. And perceive the importance and extent of work to be distinguished, respected and enriched in line with the current and future needs of its users}, keywords = {الفراغ الحضرى Urban Space / المدن الذکية Smart City / المدينة التکنولوجية Techno,City}, url = {https://bfemu.journals.ekb.eg/article_98998.html}, eprint = {https://bfemu.journals.ekb.eg/article_98998_aa0e2ea6c87a84d32cd3e97be9f98751.pdf} } @article { author = {Abdulrab Balala, Wafa and El-lithy, Khaled}, title = {Assessing the Efficiency of Security and Safety System in Yemen’s Hospitals (Case Study of Hospitals in Hadramout).}, journal = {MEJ- Mansoura Engineering Journal}, volume = {41}, number = {2}, pages = {49-57}, year = {2021}, publisher = {Mansoura University, Faculty of Engineering}, issn = {1110-0923}, eissn = {2735-4202}, doi = {10.21608/bfemu.2021.184310}, abstract = {This paper discusses the importance of having appropriate methodology to evaluate security and safety system that provide a safe environment for individuals and users in health care facilities. Analyses show a defect in the design and function, which represent the problem of this study. This paper aims to develop a global methodology for evaluate performance of the system for selected sample of hospitals in Hadramout. Series analyzes was made in a paper earlier[8] determined the most important system criteria that should be provided to achieve the optimal performance of the system, which helps to formulating a appropriate system elements to requirements of Yemen environment depending on safety system approved by the World and Pan American Health Organizations. This paper analyzes functional design of hospitals to determine the defected, protected and expected risks zones. In addition, to determine the relative weights (local scale) depend on analyzing results of questionnaires opinion addressed to a selected sample of users and work crews in selected hospitals in Hadramout. In order to evaluate performance of security and safety system to these hospitals. In addition, be generalized in Yemen hospitals a line with the nature of the local environment of the study area.}, keywords = {Security and safety system,design of hospitals,health facilities,Hadramout,World health organization,Yemen}, url = {https://bfemu.journals.ekb.eg/article_184310.html}, eprint = {https://bfemu.journals.ekb.eg/article_184310_5add88fa759291fa324e2f603f4f0c4a.pdf} } @article { author = {El Khawaga, Ahmed and El Nimr, Ahmed and Gabr, Adel}, title = {Effect of Supporting Soil on the Seismic Response of Elevated Water Tanks under different Excitations.}, journal = {MEJ- Mansoura Engineering Journal}, volume = {41}, number = {2}, pages = {6-15}, year = {2020}, publisher = {Mansoura University, Faculty of Engineering}, issn = {1110-0923}, eissn = {2735-4202}, doi = {10.21608/bfemu.2020.98821}, abstract = {Elevated water tanks are generally used to provide a high fluid pressure before distribution through pipe network. This may be the most economic mean to control the water distribution to different locations with the needed pressure. During earthquakes, the elevated water tanks have a very important role because the contained water can be used to resist fires which generally occur after earthquakes. Small numbers of researches have been done on the seismic behavior of this type of structures compared to the importance of the problem.  The important factors that influence the seismic behavior of such structures are the dynamic properties of the tank itself, the structure-soil system and the excitation time history. Soil type and different excitations time histories are the governing factors in this study.  A three dimensional model is constructed to analyze the problem. Time History analysis has been performed using the method of finite elements. In the analysis, the tank material is assumed to be reinforced concrete. The Mohr-Coulomb model has been used to describe the behavior of the soil model. Kobe, Northridge and El-Centro Earthquake records are used in this study as the bedrock Excitation.  The study focuses on the horizontal and vertical displacements of the tank. The results show the effect of different types of supporting soil and different excitations on the seismic response of the tank.}, keywords = {Seismic analysis,types of soil,Time History analysis and Method of finite elements}, url = {https://bfemu.journals.ekb.eg/article_98821.html}, eprint = {https://bfemu.journals.ekb.eg/article_98821_bba8d05bcacd4bc1c234b20b40518cf9.pdf} } @article { author = {Elmidany, Tawfik and Abdel-Samad, Abdou and Abdel Moneim, Ahmed and Saleh, Yaser}, title = {Effect of Material Type, Impact Angle and Specimen Shape on Erosion Process.}, journal = {MEJ- Mansoura Engineering Journal}, volume = {41}, number = {2}, pages = {1-8}, year = {2020}, publisher = {Mansoura University, Faculty of Engineering}, issn = {1110-0923}, eissn = {2735-4202}, doi = {10.21608/bfemu.2020.98792}, abstract = {The present work is a study of the effect of specimen shape for different specimen types and test duration times on the erosion process. Erosion changes the surface geometry of the parts, components of machines that will affect the performance and efficiency of the parts to be lower than design and may cause failure. Experimental test was carried out using a specially designed test-rig to investigate the effect of specimen shape for Stainless steel 304, and steel 37 coated with Ni-Cr thin film (38 mm) in material erosion. The test-rig is based on Specimens rotate in slurry pot, sand in water, with a controlled speed to simulate a required relative velocity between slurry and specimens. Sand particles concentration with water was of 40 wt. %. The sand particle maximum size was 550 µm. Results were investigated using weighting with sensitivity up to 0.0001gm and SEM examination. Results showed that there are different erosions on the cylindrical surface according to the impact direction. Also the impact angle has a great effect on the weight loss, for stainless steel 304, the maximum weight loss around 47o impact angle. Coating steel 37 showed a maximum wear in coating for the cylindrical shape at positions with angles between 40 o and 60o with the velocity direction.}, keywords = {Slurry pot erosion tester,Impact angle,Stainless Steel 304,coated Steel 37 and Erosion resistance}, url = {https://bfemu.journals.ekb.eg/article_98792.html}, eprint = {https://bfemu.journals.ekb.eg/article_98792_640d42feafd4978e97311eedc1667a69.pdf} } @article { author = {El Sayes, Mohamed and Elsaid, Mohammed and Eskander, Mohamed}, title = {Improving Fault Ride-Through Capability of Fixed-Speed Wind Turbine Using Combined Shunt and Series Compensation Scheme.}, journal = {MEJ- Mansoura Engineering Journal}, volume = {41}, number = {2}, pages = {1-10}, year = {2020}, publisher = {Mansoura University, Faculty of Engineering}, issn = {1110-0923}, eissn = {2735-4202}, doi = {10.21608/bfemu.2020.98786}, abstract = {This paper proposes a fault ride-through (FRT) scheme with alternatively employing shunt and series compensation for enhancing FRT capability of the fixed speed wind turbine (FSWT). A combined approach based on shunt and series grid interface topology for one voltage source converter (VSC) is used to enhance FRT capability for the FSWT. The VSC in its shunt interface topology works as a static synchronous compensator (STATCOM) to regulate voltage in normal operation and in light voltage dip. In case of serious grid voltage dip the VSC instantaneously switches from shunt to series grid interface and works as static synchronous series compensator (SSSC) injecting a series voltage through series coupling transformer to compensate the terminal voltage of the wind turbine generator (WTG). The proposed control scheme, utilizing positive and negative sequence controllers, provides a transient management solution for both balanced and unbalanced fault conditions. A comprehensive simulation study using PSCAD/EMTDC simulation program demonstrate the performance of the proposed scheme for enhancing the FRT capability of the FSWT in response to severe symmetrical and asymmetrical grid faults.}, keywords = {Fault ride through,Fixed speed wind turbine,Static synchronous compensator,Static synchronous series compensator and Voltage source converter}, url = {https://bfemu.journals.ekb.eg/article_98786.html}, eprint = {https://bfemu.journals.ekb.eg/article_98786_b71598c967eb065ba123030567029fef.pdf} } @article { author = {Gouda, Eid and Abdelhaleim, Ahmed and Eskander, Saad}, title = {Design of a Smart Push Pull Inverter Coupled with Photovoltaic System.}, journal = {MEJ- Mansoura Engineering Journal}, volume = {41}, number = {2}, pages = {11-19}, year = {2020}, publisher = {Mansoura University, Faculty of Engineering}, issn = {1110-0923}, eissn = {2735-4202}, doi = {10.21608/bfemu.2020.98789}, abstract = {Although the photovoltaic (PV) system plays an important role to meet our needs of an electrical energy, it represents a direct current (DC) source. So, it is not suitable for alternating current (AC) residential loads. This paper proposes a design and practical implementation for a smart single phase low cost inverter, which could be an effective solution to reduce the overall cost of the PV system and supply AC loads. The low cost inverter is achieved by designing low cost control and power circuits. In the power circuit, PV modules operate near the maximum power point (MPP) and supply AC load requirements through the inverter switches. The control circuit uses a microcontroller which provides a smart system for interaction with the user and remote control and monitoring, in addition to use a digital control to maintain the AC output voltage at the required value.}, keywords = {Inverter,Microcontroller,MPP and Smart System}, url = {https://bfemu.journals.ekb.eg/article_98789.html}, eprint = {https://bfemu.journals.ekb.eg/article_98789_beedc3167b77504742a37bffe5f5758c.pdf} } @article { author = {Mohammed, Hind and Abdulhaleem, Samer}, title = {Experimental Study of Spark Ignition Engine Operated with Naphtha or Gasoline Blended LPG Fuel.}, journal = {MEJ- Mansoura Engineering Journal}, volume = {41}, number = {2}, pages = {9-17}, year = {2020}, publisher = {Mansoura University, Faculty of Engineering}, issn = {1110-0923}, eissn = {2735-4202}, doi = {10.21608/bfemu.2020.98794}, abstract = {This paper presents an experimental study of the effects of LPG fuel blending in different ratio (0, 10%, 15%, 20%, and 25%) with pure naphtha or pure gasoline on engine performance and emissions. The LPG fuel blended is done on energy replacement basis. The experiments were carried out on four stroke spark ignition engine, single cylinder and air cooled at constant compression ratio and constant engine speed of (2500) rpm under different loads. The variations in brake specific fuel consumption, brake thermal efficiency, volumetric efficiency and equivalence ratio were examined. There is a marked improvement in brake thermal efficiency and brake specific fuel consumption when LPG fuel blending was used as compared to pure naphtha or pure gasoline where best results were obtained at using 20% LPG blending. For the volumetric efficiency and equivalence ratio the results were negative at all LPG ratio levels where addition of LPG fuel leads to a decrease in volumetric efficiency and increase in equivalence ratio.  An improvement in the exhaust gas emissions concentration levels for (CO, CO2 and NOx) with increasing in LPG fuel blending where it significantly decreases except HC concentration which increases due to the way of LPG injection into the engine}, keywords = {Naphtha,Spark ignition engines,LPG fuel blended and exhaust gas emissions}, url = {https://bfemu.journals.ekb.eg/article_98794.html}, eprint = {https://bfemu.journals.ekb.eg/article_98794_294907c920277f161430e9319929fd65.pdf} } @article { author = {Elhefnawy, Mahmoud and Ahmed, Ahmed and Awad, Mahmoud}, title = {Experimental Investigation on the Performance of Spherical Solar Collector for Water Heating.}, journal = {MEJ- Mansoura Engineering Journal}, volume = {41}, number = {2}, pages = {27-37}, year = {2020}, publisher = {Mansoura University, Faculty of Engineering}, issn = {1110-0923}, eissn = {2735-4202}, doi = {10.21608/bfemu.2020.98818}, abstract = {Align with shortage of fossil fuel reserves, as well as the bad effects of using it on climate, more attention must be paid to renewable energy sources which including solar energy. Egypt is one of the Sunbelt countries. The solar Atlas, which was issued in 1991, shows that the average direct normal solar radiation energy in Egypt is 2000-3200 kWh/m2/year. The sun shine duration ranges between 9-11 h/day with a few cloudy days [1]. One of the effective methods which are used to improve the performance of solar thermal energy conversion applications such as solar collectors is the design of the collector geometry. In the present work, the performance of a solar collector for water heating with spherical geometry design is investigated experimentally. The effects of incident solar radiation variation, ambient temperature changes and variation of water mass flow rate on the water outlet temperature and the performance of the collector were studied. The experiments were done at four different mass flow rates and non-flow rate. The results show that the average daily efficiency of the spherical solar collector with 1.1304 m2 surface area of absorber and 0.6 m diameter reaches its peak of 69%. The results also show that the collector efficiency factor was about 0.924 and the overall heat loss coefficient was 7.8 W/m2 °C.}, keywords = {solar energy,Solar water heater,spherical solar collector and solar collector performance}, url = {https://bfemu.journals.ekb.eg/article_98818.html}, eprint = {https://bfemu.journals.ekb.eg/article_98818_b5789156001b4073469f1d3451d077f3.pdf} } @article { author = {Galala, Muhammad and Rabah, Mostafa and Zidan, Zaki}, title = {Assessment of the Accuracy and Convergence Period of Precise Point Positioning.}, journal = {MEJ- Mansoura Engineering Journal}, volume = {41}, number = {2}, pages = {1-5}, year = {2020}, publisher = {Mansoura University, Faculty of Engineering}, issn = {1110-0923}, eissn = {2735-4202}, doi = {10.21608/bfemu.2020.98819}, abstract = {Precise Point Positioning (PPP) is a well-known positioning method that removes, models, or estimates GNSS system errors to reach the optimal position accuracy from a single receiver. The accuracy of static PPP was tested for 523 daily observation files from 75 IGS globally distributed stations observed at the period from DOY 49 to 55 in 2012. Also, the convergence period was examined to reach different levels of the horizontal accuracy to serve two applications: precision agriculture and geodetic control surveying. The accuracy of static PPP was 4, 5 and 9 mm in the north, east and vertical components, respectively. Static PPP needs 60 minutes to reach five-centimeter horizontal accuracy at the 95% confidence level and 24 hours to achieve one-centimeter horizontal accuracy at the 95% confidence level. }, keywords = {Precise Point Positioning,PPP accuracy,convergence period and geodetic control surveying}, url = {https://bfemu.journals.ekb.eg/article_98819.html}, eprint = {https://bfemu.journals.ekb.eg/article_98819_feeeb9b55e12d8f053b4a31f20e3cff1.pdf} } @article { author = {Abd-Allah, Ahmed and Hassanin, Hassan and Ahmed, Manal and Abdelsemii, Abdelrahman}, title = {Evaluation of Common Traffic Operation Softwares on the Basis of Relevancy to Roads Intersections.}, journal = {MEJ- Mansoura Engineering Journal}, volume = {41}, number = {2}, pages = {16-26}, year = {2020}, publisher = {Mansoura University, Faculty of Engineering}, issn = {1110-0923}, eissn = {2735-4202}, doi = {10.21608/bfemu.2020.98822}, abstract = {There are many traffic operation software packages which are used to simulate and evaluate the traffic operation process. These programs use the HCM methodology as a base in their analysis. It was noticed that there were great differences between their results when they were used in evaluating the same case study. Three packages were selected to be investigated in this study; they included SYNCHRO 7, HCS2000 and SIDRA INTERSECTION 5.1. The main objective of this study is to investigate the main causes of these differences as well as defining one of these programs to be the most representative of traffic movement on intersections and develop it. To achieve this goal, three signalized intersections were selected. The analysis of results included four main subjects; the first subject included a comparison between different investigated packages outputs and HCM methodology. The second subject included a comparison between delay times measured from the field and the corresponding delay times determined using the selected programs. The third subject included calibrating the selected software programs. Finally, evaluation to real delay times at various study cases and their corresponding values determined using the selected software packages are conducted. It can be concluded that there are significant differences between the field measured delay times and the corresponding calculated delay times using the selected software programs. It is concluded that SIDRA INTERSECTION 5.1 software after its calibration is considered the best software for predicting the field delay times at signalized intersection.}, keywords = {Control delay time,HCM,Synchro 7.0,HCS2000,SIDRE INTERSECTION 5.1 and Calibration}, url = {https://bfemu.journals.ekb.eg/article_98822.html}, eprint = {https://bfemu.journals.ekb.eg/article_98822_1c2e13298aa7f6c8c9c3a481b67ca59d.pdf} } @article { author = {Awed, Islam and Abd El Hakim, Mohamed and El-Etriby, Hisham and Ali, Mohamed}, title = {Design and Environmental Effect of Residual of Water Purification Plants on Asphalt Mix Design by Marshall Method.}, journal = {MEJ- Mansoura Engineering Journal}, volume = {41}, number = {2}, pages = {1-7}, year = {2020}, publisher = {Mansoura University, Faculty of Engineering}, issn = {1110-0923}, eissn = {2735-4202}, doi = {10.21608/bfemu.2020.98828}, abstract = {For a sustainable environment, in recent years, the replacement of natural raw materials with new alternative materials, which acquire an economic, energetic and environmental value, has gained more national and international attention. Recently, water residuals had considered as an environmental pollutant. This paper investigates the reuse of water residuals in hot mix asphalt industry to reduce the negative effect of the residuals on the environment and, if possible, improve mix properties. Residuals have been obtained from three Water treatment plants “El-Mansoura water treatment plant, Meit Fares water treatment plant and Galia water treatment plant”. The residuals from each plant has been added at different percent 5, 10 and 15% to the crushers’ sand in the hot mix asphalt. The Main behavior of residual mixes properties is generally having the same trend. It’s noticed that the stability, air voids and V.MA have increased but the flow, bulk density and V.F.A have decreased. The studies proved the great value obtained due to adding residuals to asphalt mixes from the point of sustainable environment and improving properties of hot mix asphalt}, keywords = {Residuals,hot mix asphalt,Marshal test,stability,Flow,Water treatment plant}, url = {https://bfemu.journals.ekb.eg/article_98828.html}, eprint = {https://bfemu.journals.ekb.eg/article_98828_37d2370c485f047bce444d6748896d85.pdf} } @article { author = {El Alfy, Kassem and Radwan, Kamal and Abdou, Moharram and Al Nady, Mohamed}, title = {Domestic Wastewater Treatment Using a Modified Electrocoagulation Process.}, journal = {MEJ- Mansoura Engineering Journal}, volume = {41}, number = {2}, pages = {8-16}, year = {2020}, publisher = {Mansoura University, Faculty of Engineering}, issn = {1110-0923}, eissn = {2735-4202}, doi = {10.21608/bfemu.2020.98831}, abstract = {A raw domestic wastewater (DWW) was treated using a modified electrocoagulation and conventional electrocoagulation (EC) experimentally. The EC process was modified by providing the plate connected by earth as earthen system and compared it with the conventional system under same operational conditions. The initial medium strength COD ranged from 500 to 700 mg/l was used. A bench scale electrocoagulation unit has been operated under batch operational conditions along nine months. The electrocoagulation unit has been consisted of transparent basin containing iron and aluminum electrodes which are connected to a power supply unit. The system was operated under different operational conditions by applying voltages 9, 18, and 27 volts. The treatment retention time ranged from 30 to 60 min. and inter change the polarity of plates periodically every 10 min.  The experimental results confirm that, earthen system plays a vital role to get fast reliable removal efficiency compared with the conventional system. The modified earthen system achieved removal of 97% for COD with retention time of 30 minutes and volts of 9 V (six plates) instead of 60 min in case of conventional system under same operational conditions. The removal efficiency was controlled accurately by changing the number of charged plates, retention time, and volt values. The modified system save the consumption material electrodes and energy and reduced retention time to 30 min. compared with the conventional electrocoagulation system}, keywords = {Wastewater,Treatment,modified electrocoagulation,iron and aluminum electrodes,retention time,earthen plate}, url = {https://bfemu.journals.ekb.eg/article_98831.html}, eprint = {https://bfemu.journals.ekb.eg/article_98831_39635b4e1e381d1d071450f626221da4.pdf} } @article { author = {Alieldin, Ahmed and Sheta, Sherief and Hegazy, Ibrahim}, title = {Adoption of Fuzzy Logic to assess the Environmental Quality of Urban Development.}, journal = {MEJ- Mansoura Engineering Journal}, volume = {41}, number = {2}, pages = {9-14}, year = {2020}, publisher = {Mansoura University, Faculty of Engineering}, issn = {1110-0923}, eissn = {2735-4202}, doi = {10.21608/bfemu.2020.98976}, abstract = {In recent years, the rapid advances of computer applications used in urban design and planning have largely changed the essence and soul of urban designs and drawings. Therefore, many challenges exist to delay the efficiency and accuracy of assessing urban design and development plans. Furthermore, the process of assessment of urban design and planning becomes full of overlapping and intertwined stories that have made continuous changes, complexities, and uncertainties for its results and decisions. Urban development has been considered to be complex because it consists of different physical, social and technical elements and confronts continuous evaluation and decision making processes. All of urban development factors contain ambiguity, impreciseness, and uncertainty in their data, while fuzzy logic has been proved to shed a new light on the management and assessment of these factors. The purpose of this research is to develop an expert system based on fuzzy logic to assess the Environmental Quality of Mansoura Waterfront, one of the most important areas in the city because of its included mixed uses and its adjacency to Mansoura University. The researchers intend to manage the uncertainties associated with decision-making processes through employing fuzzy logic in obtaining precisely enumerated, quantified and computerized assessment results for this area}, keywords = {Urban Development Plans,Fuzzy based Assessment and Environmental Quality}, url = {https://bfemu.journals.ekb.eg/article_98976.html}, eprint = {https://bfemu.journals.ekb.eg/article_98976_1555e7bf76e79556c0ea3207e1f724c6.pdf} } @article { author = {Elnegiry, E. and Ahmed, Ahmed and Allam, M.}, title = {Experimental Investigation on the performance of Silica Gel Desiccant Wheel.}, journal = {MEJ- Mansoura Engineering Journal}, volume = {41}, number = {2}, pages = {18-26}, year = {2021}, publisher = {Mansoura University, Faculty of Engineering}, issn = {1110-0923}, eissn = {2735-4202}, doi = {10.21608/bfemu.2021.205270}, abstract = {The energy penalty is the main problem of the air conditioning system, so desiccant wheel (DW) is integrated with HVAC system to reduce the overall energy consumption, also DW extensively used for humidity control for various industrial and commercial processes. The aim of this paper is to construct and design a rotating DW to study its performance. The DW is filled with silica gel and has a cylindrical shape of 400 mm diameter and 110 mm thickness. The impact of different operational parameters such as the impact of regeneration temperature, flow rate and rota-tional speed on the performance of the wheel has been investigated. The temperature and humidity ratio at the outlet of DW are measured. The obtained results were used to calculate some parameters for the wheel such as the dehumidification effectiveness, the dehumidification coefficient of performance and the sensible energy ratio. It was found that the maximum dehumidification effectiveness occurs at regeneration temperature of 110 0C, rotational speed of 2rph and process air flow rate of 1.8 kg/min and maximum DCOP occurs at regeneration temperature of 65 0C, rotational speed of 2rph and process air flow rate of 2.4 kg/min}, keywords = {Desiccant wheel,HVAC system,Regeneration temperature,Solid desiccant and Adsorption}, url = {https://bfemu.journals.ekb.eg/article_205270.html}, eprint = {https://bfemu.journals.ekb.eg/article_205270_37b6cca18af99eb1dc9c2dcceeb605ab.pdf} }