Mansoura University, Faculty of EngineeringMEJ- Mansoura Engineering Journal1110-092317320210901An Efficient Technique for Smoothing Project's Demand for Multiple Resources.11017040110.21608/bfemu.1992.170401ENAdelEldosoukyAssistant Professor., Civil Engineering Department., Faculty of Engineering., Mansoura University., Mansoura., Egypt.Journal Article19920711<strong>The objective of the resource smoothing problem is to schedule Project activities so that the project duration does not exceed its early start duration and the project's maximum demand for resources, or the variation in this demand from one time period to another, is kept to a minimum. Many heuristic and optimal methods have been developed for solving this problem. almost all of them are concerned with smoothing a single resource. For a contractor who is required to manage several resources simultaneously, the process can be done by adding the resource rates together, according to predetermined weightings of the resources, and then smoothing the single equivalent resource. This method is inefficient and often gives approximate results. This paper introduces a new efficient technique for smoothing multiple resources concurrently. The resource smoothing problem is translated into a finite number of resource scheduling problems in order to determine minimum resource levels required to maintain the CPM project completion date. The technique can give both the minimum level and the most uniform level resource histograms. The resulting smoothed histograms are better than those produced by other methods. The technique is simple, and computationally efficient. An example is solved to show the details and results of the technique. </strong>https://bfemu.journals.ekb.eg/article_170401_e2c5c04800f8f738cfc9a53c8810c57c.pdfMansoura University, Faculty of EngineeringMEJ- Mansoura Engineering Journal1110-092317320210901Influence of Water Temperature and Side Slope on Sand Bed Channels.113317042110.21608/bfemu.2021.170421ENAbdel Razik AhmedZidanDepartment of Agricultural Engry., College of Agriculture and Veterinary Medicine., Al-Qassim., Saudi ArabiaJournal Article19920711<strong><span>A mathematical model was used to study the effect of both water temperature and side slope on sand bed channel geometry and longitudinal slope. The study has revealed no responses occurred for both mean width and water depth due to the change in water temperature over 0<sup>O</sup>C for canal having median particle size ≤ 0.5 mm. </span></strong><strong><span><br /> <strong>For canals having d<sub>so</sub> ≥ 0.6 mm, moan width decreased and water depth increased especially from Octo about 20 <sup>O</sup>C, </strong><br /> <strong>Bed slopes decreased regularly with the increasing value of water temperature. Statistical analysis was used to fit this variation. </strong><br /> <strong>Both mean width and water depth decreased and bed slope increased with the increase of the channel side slope. </strong><br /> </span></strong>https://bfemu.journals.ekb.eg/article_170421_c8f19c6281499e319a959ac7f5279338.pdfMansoura University, Faculty of EngineeringMEJ- Mansoura Engineering Journal1110-092317320210901The Effect of Having an Adverse Rear Floor on Scour Holes.344417042810.21608/bfemu.2021.170428ENAdel Abdou BayoumiEl-MasryAssistant Professor., Department of Irrigation and Hydraulics., Faculty of Engineering., El-Mansoura University,, EL-Mansoura,, Egypt.0000-0002-8315-3728Journal Article19920711<strong>Experimental investigations using clear-water were conducted to study the effect of having an adverse rear apron on the scour depth and length. Dimensional analysis to find different non-dimensional terms affecting the phenomenon were obtained and verified with the help of the experimental data. It is observed that the maximum scour depth occurs at about 3-5 times of that depth from the end of the floor. The ratio of scour length to its depth has been increased by increasing the adverse slope of the apron. Increasing the adverse slope of the rear apron clearly decreases the scour hole downstream of the structure. The obtained results have been illustrated in the form of curves. For higher discharges, increasing downstream adverse slope. Obviously decreases the scour hole size. </strong><strong><br /> <strong> </strong><br /> <strong> </strong><br /> <strong> </strong></strong><br /> https://bfemu.journals.ekb.eg/article_170428_7b68bb67a175e60edf86f4498146d971.pdfMansoura University, Faculty of EngineeringMEJ- Mansoura Engineering Journal1110-092317320210901Reliability and Profitability Study of Conventional - Photovoltaic - Battery Storage Combined System.173817044410.21608/bfemu.2021.170444ENMohamed Adel RatebEl-SayesAssociate Professor., Electrical Power and Machines Dept., Faculty of engineering. Mansoura University., El-Mansoura., Egypt.M. G.Osmanprofessor of Electrical Power and Machines Department., Faculty of Engineering., El-Mansoura University., El-Mansoura., Egypt.Sahar SidkyKaddahElectrical Power and Machines Department., Faculty of Engineering., El-Mansoura University., El-Mansoura., Egypt.Journal Article19920711<strong>indices of systems integrated with unconventional ones donot deal with the impact of interconnecting storage batteries with them. The methods and developed inthese works aremodified here and modified to reflect the influence of interconnecting storage batteries with</strong><br /> <strong>these systems, </strong><br /> <strong>This paper deals with the following important topics : </strong><strong><br /> <strong>1. Derivation of an hourly operation strategy for the comoined</strong><br /> <strong>system selected for the study, </strong><br /> <strong>2. Modification of the previous methods used in providing the reliability 1nd1ces of combined system to include the impact of </strong><br /> <strong>storage batteries,</strong><br /> <strong>3. Determination of the profit resulting from the Interconnection . </strong><br /> <strong>A number 1cal study 1s carried out to discuss the suggested operation strategy and, to verify the modified analysis, and also to determine the interconnection profit . The results are presented in the form of tables, figures and mathematical formulas. </strong></strong>https://bfemu.journals.ekb.eg/article_170444_d6df767b608ed812ff45d958c561f8cf.pdfMansoura University, Faculty of EngineeringMEJ- Mansoura Engineering Journal1110-092317320210901Laser Beam Profile Shaping for Lidars with Diffraction Grating.404817045110.21608/bfemu.2021.170451ENAhmed Shaaban MadianSamraAssistant Professor., Department of Electrical Communications., Faculty of Engineering .,El-Mansoura University., Mansoura., Egypt.Journal Article19920711<strong> <strong>A laser beam profile shaper was designed. It transforms a fundamental mode laser beam profile into flat top profile at a local plane. The shaper uses an ion-exchanged diffraction grating. The performance was tested and a good agreement between theoretical and experimental results was obtained. </strong></strong><strong><br /> <strong> </strong><br /> <br /> </strong>https://bfemu.journals.ekb.eg/article_170451_d755e8be452984674df73ba5a8f41d60.pdfMansoura University, Faculty of EngineeringMEJ- Mansoura Engineering Journal1110-092317320210901Performance Analysis of Loads Individually or Combindelly Powered by Seperate or Common Photovoltaic Sources.496517045610.21608/bfemu.2021.170456ENMohamed Adel RatebMohamed El-SayesAssociate Professor., Electrical Power and Machines Department .,
Faculty of Engineering., El-Mansoura University., Mansoura., Egypt.Journal Article19920711https://bfemu.journals.ekb.eg/article_170456_972112d765f1ca7611a57720fcb34c9f.pdfMansoura University, Faculty of EngineeringMEJ- Mansoura Engineering Journal1110-092317320210901Design the Main Shaft of Wide Weaving Machine for Equally Sided Reed Advance.11317050110.21608/bfemu.2021.170501ENAbdallah S. MohammedEl-ToukhyDepartment of Industrial Production Engineering., Faculty of Engineering.,
El-Mansoura University., El-Mansoura., Egypt.Journal Article19920711<strong>As a result of driving wide weaving machines double warp beam from one side, torsion occurs in the main driving shaft, which in turn affects on the non uniform advance of the reed. during the beat up of the weft yarn. This in turn leads to the increase in the rate of warp yarn tension from the checking side than the picking side., hence the warp yarn in the checking side will be consumed than that in the picking side. </strong><br /><strong> In the present work the proplem of non-uniform advance of the reed has been solved by reducing the twisting angle of the main driving shaft, through the optimum design of the shaft or by different mechanical devices. Also the selection of the most suitable material and the minimum cost of the driving shaft </strong>https://bfemu.journals.ekb.eg/article_170501_9b393a64cf891f19e523495c488d230e.pdfMansoura University, Faculty of EngineeringMEJ- Mansoura Engineering Journal1110-092317320210901On the Effect of Polluted Environment on the Gas Turbine Performance.143117050210.21608/bfemu.2021.170502ENA. A.El-HadikAssociate Professor., Mechanical Power Engineering Department., Faculty of Engineering., El-Mansoura University., Mansoura., Egypt.Journal Article19920711<strong>This work describes the effect of environmental polluted air properties (such as; temperature, relative humidity. volume fraction ratios of carbondioxide and carbon-monoxide ratio, and dust/sand particles) on the gas turbine performance. The polluted air properties are considered variable as under: </strong><strong><br /> <strong>i) Air temperature varying from 270 .to 330°K. ii) Air relative humidity changing from 0 to 100%,and</strong><br /> <strong> iii) Reduction ratio in atmospheric pressure, due to the use of </strong><br /> <strong>air filter at compressor intake, varying from 60 to 100%. </strong><br /> <strong>The advanced BASIC Computer Programmes have been written for calculating the specific work and thermal efficiency of a gas turbine unit which works under the above conditions. The gas turbine performance values have been estimated by using various values of the maximum gas turbine inlet temperature (TIT) and pressure ratios (PR) (from 1200 to 1600° K, and from 10 to 16 respectively). </strong><br /> <strong>Specific heats of the mixture have also been considered as a function of temperatures and fuel air ratios. </strong><br /> <strong>The effect of environmental polluted air containing various ratios of Co, and CO<sub>2</sub>, on the gas turbine performance has also been investigated. </strong></strong>https://bfemu.journals.ekb.eg/article_170502_e7e0d4a6da545ae8bbf4c3edd51cb180.pdfMansoura University, Faculty of EngineeringMEJ- Mansoura Engineering Journal1110-092317320210901The Use of Anion-Exchange Resin (A 162) as a Bromine Carrier for the Bromination of 2 Acylfurans.152018872910.21608/bfemu.2021.188729ENM. SH.FayedChemical Engineering Department., Military Techenical College., Cairo., Egypt.M. A.SadekChemical Engineering Department., Military Techenical College., Cairo., Egypt.Ibrahim Gar Al-AlamRashedProfessor of Physical Science Engineering Department., Faculty of Engineering., El-Mansoura University., Mansoura., Egypt.Journal Article19920710<strong>The anion-exchange resin A-162 commercially available in the chloride form was prepared in the perbromide form to be used as brominating agent for the bromination of 2-acylfurans. The monobromo derivatives were obtained in very high yield at normal temperature without the appearance of byproducts. The resin was separated at the end of the reaction by simple filteration and could be recycled for further runs.</strong>https://bfemu.journals.ekb.eg/article_188729_e46ed429a5948bab12d30023f72192b9.pdfMansoura University, Faculty of EngineeringMEJ- Mansoura Engineering Journal1110-092317320210901CAD for Gears Part 1 Spur, Helical and Double Helical Gears.325117050510.21608/bfemu.2021.170505ENAhmed M.M.El-BahloulAssociate Professor., Production Engineering Department., Faculty of Engineering., El-Mansoura University., Mansoura., Egypt.Journal Article19920711<strong>The aim of this paper is to construct a software containing a complete design procedure and detailed drawing for spur, helical and double helical gears. This software can be executed on all the IBM personal computers XT/AT or compatibles. The main elements of the design In this program are : input data, type end shape of gear tooth system (IS. US, BS and DIN), module, minimum number of teeth to avoid interference, tooth profile modification, centre distance, contact ratio, face width, helix angle, material, equations for bending strength (Lewis, modified Lewis and Buckingham) and surface durability, and load carrying capacity for bending strength and surface durability using ISO, AGMA and BS equations with constant or variable tooth load. Many equations and practical formulae are selected for making the gear construction integer gear, solid gear, gear with web, gear with web and holes, gear with arms, gear with Two walls and composite gear). With running the software. full specifications, geometry, kinematics, loads, stresses and detailed drawing of the gears are obtained according to the input data. Different examples are selected to show the variety of the Output data and the strength of the software. Also these runs show the sava in time and accuracy of the results.</strong><br /> <br /> <br /> <br /> <br /> <br /> https://bfemu.journals.ekb.eg/article_170505_8d035b8f29258971bde3fdec3a88bf4e.pdfMansoura University, Faculty of EngineeringMEJ- Mansoura Engineering Journal1110-092317320210901A Proposed Solar Desalination-Heating System with Heat Recovery.526017050610.21608/bfemu.2021.170506ENHelmy El SayedGadAssociate Professor., Mechanical Power Engineering Department., Faculty of Engineering ., El-Mansoura University., Mansoura., Egypt.Journal Article19920711<strong>In the present work, a solar desalination-heating system with heat recovery is proposed. The system includes a solar collector, humidifier, storage tank and a water-cooled condenser. The thermal design of a typical unit is presented. Both latent heat of the condensed vapour and the sensible heat of the circulating air are recovered, and added as a </strong><em><strong>s</strong></em><strong>ensible heat to the inlet water in the condenser. The system is simple in construction, operation and control. Therefore, it is a suitable option for remote areas where only the ground water, or wells are available. The thermal performance of the system is also studied under different operating conditions. Results have shown that this system is highly recommended for practical application. </strong>https://bfemu.journals.ekb.eg/article_170506_0831f5cb19fc59ab3a12df91a1439155.pdfMansoura University, Faculty of EngineeringMEJ- Mansoura Engineering Journal1110-092317320210901A Methodology for Human Factors Utility Analysis in Quality Inspection Workstation Design.616917050710.21608/bfemu.2021.170507ENAhmedAbd El-ShafiAssistant Professor., Production Engineering and Machine Design Department., Faculty of Engineering., El-Mansoura University., Mansoura., Egypt.Syed Abid A.NaqviAssistant Professor., Mechanical Power Engineering Department., P.O.BOX 800 , Riysdh 11421., Saudi Arabia
Ph; 467-6821 Fax 401019 KSU SJJournal Article19920711<strong>This paper addresses a very crictial Issue relating human factor to the quality Inspection workstation design. In lot of lstance these workstation lack the consideration of human capabilities and limitations in their design, which could be included to enhance both the productivity and safety of the workplace and more importantly of the inspe</strong><strong>c</strong><strong>tor, the paper presents a methodology which is easy to use and can be effectively applied to provide an analyst with a measure to compare the existing quality inspection station d</strong><strong>e</strong><strong>sign utility with the utility of many number of alternate options having varying applications of human factors in t</strong><strong>he</strong><strong>ir desi</strong><strong>g</strong><strong>n. </strong><strong>A</strong><strong>lso these new systems could be compared between each other. The major human factor features identified and Included in the analysis </strong><strong>are n</strong><strong>a</strong><strong>m</strong><strong>ly, the time av</strong><strong>a</strong><strong>ilable for Inspecti</strong><strong>o</strong><strong>n, lighting f</strong><strong>or </strong><strong>ta</strong><strong>s</strong><strong>k, Inspector's vision and inspector's posture. The major </strong><strong>g</strong><strong>oals Identified a</strong><strong>re, I</strong><strong>mprov</strong><strong>e</strong><strong>d Inspector's detectability, be</strong><strong>t</strong><strong>ter inspection consequence, improved product reputation and better inspection procedure and steps. </strong><br /> <strong>These goals are considered under productivity cat</strong><strong>eg</strong><strong>ory, whereas, three other goale are identified under health and safety category, these include the reduction of compensation costs, reduction of governmental fi</strong><strong>n</strong><strong>es and penalties and minimizatio</strong><strong>n </strong><strong>of l</strong><strong>o</strong><strong>st time due to injurles an</strong><strong>d </strong><strong>accidents bec</strong><strong>a</strong><strong>use of poor human factor consideeations in the design of the ststio</strong><strong>n</strong><strong>. In general this pape</strong><strong>r </strong><strong>present</strong><strong>s </strong><strong>a v</strong><strong>e</strong><strong>ry practical, hands o</strong><strong>n and </strong><strong>easy methodology for human fa</strong><strong>ct</strong><strong>or justification in redesigns of the existing quality inspect</strong><strong>i</strong><strong>on workstations. </strong><br /> <br /> <strong> </strong>https://bfemu.journals.ekb.eg/article_170507_0c0c29411101aabfacab9b6680015a22.pdf