MEJ. Mansoura Engineering Journal最新文献

Developing a Criteria Framework for the Evaluation of the Image of the City Case Study: Mansoura Downtown 城市形象评价的标准框架——以曼苏拉市区为例

MEJ. Mansoura Engineering Journal Pub Date : 2022-12-16 DOI: 10.21608/bfemu.2022.152212.1294

Ahmed Mohamed Thabet

引用次数: 0

Investigation of Heavy Metals Removal from Aqueous Solutions by Ceramic Filters 陶瓷过滤器去除水中重金属的研究

MEJ. Mansoura Engineering Journal Pub Date : 2022-12-09 DOI: 10.21608/bfemu.2022.141727.1274

Gehan Mostafa Kotb Tolba, A. Gad, A. Mohammed, Ahmed Farghaly Farghaly

{"title":"Investigation of Heavy Metals Removal from Aqueous Solutions by Ceramic Filters","authors":"Gehan Mostafa Kotb Tolba, A. Gad, A. Mohammed, Ahmed Farghaly Farghaly","doi":"10.21608/bfemu.2022.141727.1274","DOIUrl":"https://doi.org/10.21608/bfemu.2022.141727.1274","url":null,"abstract":"— The study utilized the membrane filtration technique to remove two common heavy metals from aqueous solutions; the first was Pb+2, and the second was Cd+2. Manufacturing of ceramic filters was carried out through the dimensions of 20 by 20 cm and thickness of 4 cm from local clay and sawdust at different percentages of sawdust: 1.0%, 2.5%, and 4.0%. The study examined the key factors affecting the removal efficiency of the ceramic filters, such as the initial pH value (5.5 and 7.0) and initial concentration (5.0 and 10.0 mg/L) of heavy metals at a constant pressure head of 30 cm. Moreover, the study applied a microstructural analysis using the scanning electronic microscope (SEM), energy-dispersive X-ray spectroscopy (EDS), and X-ray diffraction (XRD) on the utilized ceramic membranes before and after the filtration process. The results showed that the percentages of heavy metals removal are more than 80% at pH 5.5 and 82% at pH 7.0. The efficiency of removing heavy metals from aqueous solutions declines as the initial metal concentrations increases while it increases with the applied water head. Further, although the sawdust percentages had a slight effect on the removal efficiency, ceramic filters with a sawdust percentage of 1.0% were the best.","PeriodicalId":179458,"journal":{"name":"MEJ. Mansoura Engineering Journal","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123525425","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The Economic Return of the Fruitful Roof Gardens of Buildings on the Egyptian State & Individuals, Case Study Government Housing (Asmarat District) 富有成效的屋顶花园对埃及国家和个人的经济回报，政府住房案例研究(Asmarat区)

MEJ. Mansoura Engineering Journal Pub Date : 2022-12-05 DOI: 10.21608/bfemu.2022.142459.1275

Kareem Mahrous Ali

引用次数: 0

Toward A Rural Sustainable Methodology for The Countryside of Dohuk Governorate, Kurdistan Region of Iraq The Village of “Baroshky Saadoun Agha” As Case Study 伊拉克库尔德斯坦地区杜胡克省农村可持续发展研究——以巴罗什基萨多恩阿加村为例

MEJ. Mansoura Engineering Journal Pub Date : 2022-12-05 DOI: 10.21608/bfemu.2022.122272.1232

Sherif Ahmed sheta, Ahmad Almaidawy Eltantawy, Abdulwahid Said Nuaman

引用次数: 0

Preparation of In-Situ Bimetallic CoNi Nanoparticles Suppurated on Carbon Nanotubes as Effective Catalyst for H2 Generation from Sodium Borohydride 在碳纳米管上制备原位双金属CoNi纳米颗粒作为硼氢化钠制氢的有效催化剂

MEJ. Mansoura Engineering Journal Pub Date : 2022-12-05 DOI: 10.21608/bfemu.2022.162188.1316

Ahmed M. Abd-elaal, A. A. Alsarawy, M. M. El-Halwany, Mahmoud H. Mahmoud

引用次数: 0

Achieving Sustainability in The Facades of Existing Residential Buildings in The City of Riyadh - Saudi Arabia An applied study on one of the Prototypes buildings of the Ministry of Housing in Riyadh 在沙特阿拉伯利雅得市现有住宅建筑立面中实现可持续性对利雅得住房部的一个原型建筑进行了应用研究

MEJ. Mansoura Engineering Journal Pub Date : 2022-12-05 DOI: 10.21608/bfemu.2022.131640.1248

H. A. F. El Shafie, Nouf Alomairi

引用次数: 0

Digital Technologies' Trends and Challenges in Improving Building Facades' Thermal Performance Case Study Riyadh, Saudi Arabia 数字技术在改善建筑立面热性能方面的趋势和挑战案例研究，沙特阿拉伯，利雅得

MEJ. Mansoura Engineering Journal Pub Date : 2022-12-04 DOI: 10.21608/bfemu.2022.131633.1247

Nouf Alomairi, Ahmed Omar Mostafa

引用次数: 0

Evaluation of Energy Detection-Based Spectrum Sensing for Cognitive Radio Applications 基于能量检测的频谱感知认知无线电应用评估

MEJ. Mansoura Engineering Journal Pub Date : 2022-12-01 DOI: 10.21608/bfemu.2022.151033.1290

Rania. A. Youssef, Mohamed. A. Mohamed, Ahmed A. Kabeel

{"title":"Evaluation of Energy Detection-Based Spectrum Sensing for Cognitive Radio Applications","authors":"Rania. A. Youssef, Mohamed. A. Mohamed, Ahmed A. Kabeel","doi":"10.21608/bfemu.2022.151033.1290","DOIUrl":"https://doi.org/10.21608/bfemu.2022.151033.1290","url":null,"abstract":"— In this paper, a novel design of cognitive radio (CR) system based on a tunable ultra wide-band antenna is suggested; it offers a quick and cheap method for effectively locating spectrum gaps spanning. The frequency ranges of 9.30 to 13 GHz with three operating bandwidths (BW) of 1.11GHz ,0.8 GHz, and 0.36GHz. Frequency is scanned by using a tunable Ultra-Wideband, the antenna has a small size with five gaps that are used as a Switch 2 mm × 3 mm and the partial ground 30 mm × 30 mm, these Switches can offer a tuning capability. The suggested antenna is constructed on a Rogers RT5880 substrate with a relative permittivity (εr) =2.2 and a dielectric thickness of 1.575 mm. This design of antenna has a number of benefits, including small size, low cost, easy to fabricate, and band accessibility that is elastic, the ground and patch antenna are fabricated on copper. At 10 GHz, an overall realized gain of 8.65dBi is achieved. The low VSWR < 2 antenna presented has a suitable radiation characteristic to gratify the needs of existing and future wireless communication systems. Return loss simulation findings for different switch states and radiation patterns at different frequencies are also shown, at the end both simulation and measurements are presented.","PeriodicalId":179458,"journal":{"name":"MEJ. Mansoura Engineering Journal","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127688383","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Environmental Rehabilitation Techniques of Existing Buildings 现有建筑物的环境修复技术

MEJ. Mansoura Engineering Journal Pub Date : 2022-12-01 DOI: 10.21608/bfemu.2022.271977

Ghada Essam Galfon, Sherief Ahmed Sheta, Mohamed Ali Khalil

{"title":"Environmental Rehabilitation Techniques of Existing Buildings","authors":"Ghada Essam Galfon, Sherief Ahmed Sheta, Mohamed Ali Khalil","doi":"10.21608/bfemu.2022.271977","DOIUrl":"https://doi.org/10.21608/bfemu.2022.271977","url":null,"abstract":" Abstract —Rapid urban growth of existing cities -especially in developing countries- increases the environmental impacts of urbanization that lead to climate change. This requires a set of strategies to increase the resource management efficiency of buildings and improve indoor environmental quality (IEQ) not only for new constructions but also - and more important - for existing buildings which represent the major percentage of the built environment. The paper discusses the environmental rehabilitation techniques of existing buildings to improve the resource management efficiency of IEQ, and thus, achieve an environmentally friendly building. The research analyses examples of environmentally certified existing buildings to recognize techniques that could be reused in other buildings on the local scale. The paper concludes a set of such techniques that are classified based on application method into three groups; first, by developing or replacing some of the existing building materials with new, more efficient ones; second, by developing the building systems to enhance their performance; and third, by adding new systems to the building to improve its overall environmental efficiency","PeriodicalId":179458,"journal":{"name":"MEJ. Mansoura Engineering Journal","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116026136","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Optimizing Building Layouts for Proper Self-shading: A Computational Approach 为适当的自遮阳优化建筑布局:一种计算方法

MEJ. Mansoura Engineering Journal Pub Date : 2022-12-01 DOI: 10.21608/bfemu.2022.268301

Amr Mamdoh Ali Youssef

{"title":"Optimizing Building Layouts for Proper Self-shading: A Computational Approach","authors":"Amr Mamdoh Ali Youssef","doi":"10.21608/bfemu.2022.268301","DOIUrl":"https://doi.org/10.21608/bfemu.2022.268301","url":null,"abstract":"— Self-shaded buildings receive great attentions especially in high-rise building in hot climate zones. This paper introduces a novel optimization approach for reforming high-rise building layout shapes (BLSs) towards better self-shaded alternatives for a given shape, along with the determination of different treatments for optimizing a given shape using shape grammar theory; their performance have been simulated by Autodesk Revit. Variables considered during the generation process include different treatments, range of treatments’ ratios and orientations along with controlling shape area and circumference if required. High-rise buildings in Egypt are used to demonstrate/validate the approach applications. The study results, through many applications, show the generation possibility of better self-shaded BLSs along with controlling previous variables when required. This optimization has been also tested from energy consumption perspective through 12 alternatives, and the usefulness of the approach has been validated through a conducted survey on different architects. This approach can help architectural designers in achieving self-shaded BLSs for their design cases which cannot be handled directly via single simulations.","PeriodicalId":179458,"journal":{"name":"MEJ. Mansoura Engineering Journal","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121643667","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0