2024-03-29T07:26:31Z
https://jesaun.journals.ekb.eg/?_action=export&rf=summon&issue=18887
JES. Journal of Engineering Sciences
1687-0530
1687-0530
2021
49
No 1
SUSTAINABLE SUPPLY CHAIN DESIGN FOR PERISHABLE PRODUCTS: A LITERATURE REVIEW
Omnia Mohamed
Nabil
Nahid Hussein
Afia
Lamia Ahmed
Shihata
Supply chain design (SCD) is highly addressed in the operational research. Moreover, sustainability plays a significant role in the supply chain performance. This paper gives a literature review on the subject of sustainable supply chain design (SSCD) for perishable products during 2014-2020. A summary table is developed to compare between the different research papers to provide a deeper understanding for the literature. The papers are compared according to different classifications such as: perishability, sustainability, objective functions, modelling approaches, software tools used and also the field of application. Finally, a list of potential issues for future research opportunities is recommended.
“Sustainable Supply Chain (SSC)”
“Supply Chain Design (SCD)”
“Perishable products”
“Pharmaceutical”
“Food”
2021
01
31
1
22
https://jesaun.journals.ekb.eg/article_133685_6d53be6eff3e419d4e06e90bab46b590.pdf
JES. Journal of Engineering Sciences
1687-0530
1687-0530
2021
49
No 1
ANALYSIS OF CHANNEL CODING PERFORMANCE FOR IMAGE TRANSMISSION OVER COOPERATIVE RELAY NETWORKS
Safwat
Ramzy
fatma
mohamed
Usama
Mohammed
In this paper, we examine and investigate the effects of noise-induced transmission errors on the performance of image transmission over cooperative relay networks with various error-correction capabilities. MAP decoder is used to decode the data sent across the cooperative network. First, the relationships between lengths of the code, peak signal-to-noise ratio, and signal-to-noise ratio are analyzed. Second, the comparison between the performances of different channel coding is introduced in conjunction with the set partitioning in hierarchical trees algorithm as a source code. The genetic algorithm, as an efficient optimization technique, is applied for solving the problem of optimal unequal error protection method to reduce the transmission rate and to improve the transmitted image quality. Many useful and significant results that are introduced in this paper can be used in the enhancement of image transmission over the cooperative networks. Compared to traditional methods, the suggested method is more practical for the transmission of images with high-quality via smart devices.
image transmission
BCH coding
Cooperative Relay network
MAP
2021
01
01
23
41
https://jesaun.journals.ekb.eg/article_128637_ccb1a6f37e4bd1a1ff346e0b42478ec6.pdf
JES. Journal of Engineering Sciences
1687-0530
1687-0530
2021
49
No 1
Optimization of electroless Ni-P coating bath and its impact in the Industrial Applications
Refaie
Omar
Mahmoud
A. El-Sharief
Electroless Ni-P coating is widely used in industrial engineering applications due to its ability to alter and improve the surface properties of the steel substrate. Electroless nickel coating introduce an excellent combination of surface properties. It can add brightness, lustre, and appeal. The final coating layer also possess very good adhesion with coated substrates, this is the reasons for using such layer as an 'undercoat' for other coatings. The ability to produce a very homogenous composition and produce coating with high corrosion resistance are mainly based on the plating bath composition. The present work investigates the influence of bath compositions, which included nickel sulphate, sodium hypophosphite and tri-sodium citrate, on the process of electroless Ni‒P coating. The deposition rate (Dr) as well as the bath stability were monitored to optimize the plating bath conditions with the different composition. The results of this work showed that the deposition rate of coating layer increase with increase of nickel source and reducing agent while; sodium citrate concentration in the plating bath have adverse effect on the deposition rate of coating.
Ni-P electroless plating
Reducing agent
complex agent
bath stability
2021
01
01
42
52
https://jesaun.journals.ekb.eg/article_136245_fe8de7e819b1c28bf0b95cd14357cc05.pdf
JES. Journal of Engineering Sciences
1687-0530
1687-0530
2021
49
No 1
STUDY OF THE BEHAVIOR OF BINARY MIXTURE GRINDING USING THE FIXED-TIME LOCKED - CYCLE TESTS”.
Sherein A
Rizk
Ores are generally very heterogeneous in their physical properties. Variation of the ore from a mine can cause the mill feed to vary in grindability. In the comminution of heterogeneous materials, an understanding of how different constituents behave by themselves and how they interact with each other may prove useful not only for understanding grinding mill action but also for obtaining the optimum values which used in mathematical modelling. Locked cycle tests show that in the grinding of mixtures relatively long time is required to attain steady state, during which the composition of the mill contents continuously change. Therefore, the main objective of this work is to study the behavior of the components of limestone-quartz binary mixture at different ratios of mixing from the start point to attain the steady state condition using the experimental fixed-time locked-cycle tests. It is shown that attaining the steady state condition in a fixed time locked cycle is faster with low circulating load for soft material than those for hard one when they ground separately. As admixture, the hard component appearance increases gradually with decreasing the fineness of the product as its percentage increases in the feed.
Comminution of binary mixtures
psedu closed circuit
fixed time locked
cycle
grinding circuits
2021
01
01
53
63
https://jesaun.journals.ekb.eg/article_121243_07aaff3b72da88eaef6e42f47e36825d.pdf
JES. Journal of Engineering Sciences
1687-0530
1687-0530
2021
49
No 1
CONVEYANCE LOSSES ESTIMATION FOR OPEN CHANNELS IN MIDDLE EGYPT CASE STUDY: ALMANNA MAIN CANAL, AND ITS BRANCHES
Tarek
Abuzeid
Whereas the irrigation water transmission open channel network in Egypt, is one of the largest and longest networks all over the world that dogged in permeable soil (Its length reaches about 33500 km). In a country that suffers greatly from an increasing shortage of limited available irrigation water quantities, ignoring the expected huge quantities of irrigation water losses through transport operations is a path of madness, to bridge the accelerated gap between what is required, and what is exist. Irrigation water conveyance losses include seepage, evaporation, and transpiration losses. The used data in this research was collected from the field and through the official Ministry of water resources and irrigation authority in Assiut governorate. The analysis of the data proved that, the total loss of irrigation water from Almanna canal and its branches reaches about 16.05 Million cubic meters monthly. The lost water through only seepage reaches about 15.95 Million cubic meters monthly, representing 99% of all lost irrigation water. While, the rate of increase in the evaporation losses at earthen sections more than the designed sections losses can be neglected. Thus, the lining of Almanna canal and its branches is the most effective solution for saving such a huge amount of water, and directed it to irrigate some newly reclaimed areas, in addition, to solve the problems of non-arrival of the irrigation water to the ends of some irrigation canals. At the same time, improving the environmental situation of the surrounding agricultural community.
Seepage losses
irrigation water transportation
Agricultural community's environment
2021
01
01
64
84
https://jesaun.journals.ekb.eg/article_145982_b35d62251a7d1e81740a10484c0bf7a8.pdf
JES. Journal of Engineering Sciences
1687-0530
1687-0530
2021
49
No 1
NUMERICAL STUDY OF FLANGE BUCKLING BEHAVIOR OF HIGH-STRENGTH STEEL CORRUGATED WEB I-GIRDERS
Amr
Saddek
Sedky
Tohamy
Amr
Elsayed
Ahmed Attia M.
Drar
Steel plate girders with trapezoidal corrugated webs (TCWPGs) have been used over the last years around the world in many roadway and railway steel bridges as they can introduce several important advantages compared to flat web plate girders. The proper design of corrugated web girders depends mainly on the flexural and shear capacity of them. However, the flexural capacity is more important. Also, not many researchers studied the flexural capacity of such girders especially, when flange local buckling failure type (FLB) occurs in these corrugated web girders. In this paper, the flange local buckling behavior of steel trapezoidal corrugated web girders built up from high-strength steel (HSS) plates has been investigated to get the advantages of both the technique of corrugated web plates (CWPs) and the high-strength steel material (HSSs) together. A new numerical parametric study on four important parameters has been carried out to explain and investigate the flange local buckling behavior of high-strength steel corrugated web girders, considering mainly the influences of the flange to web thickness ratio, unsupported length of the compression flange, the corrugation angle and the initial imperfection magnitude of the compression flange on the behavior of girders with corrugated webs built up from HSSs. Using the commonly used finite element software ABAQUS, the results of the FE models have been obtained to be analyzed and discussed. Finally, some important advices have been introduced to aid the structural engineers to design such girders under flexural loading in economical manner.
Flexural behavior
flange local buckling (FLB)
trapezoidal corrugated web (TCW)
high-strength steel (HSSs)
ABAQUS/CAE
2021
02
01
85
106
https://jesaun.journals.ekb.eg/article_146652_8155a3ee1fdae68c0dfc24c571b3326b.pdf
JES. Journal of Engineering Sciences
1687-0530
1687-0530
2021
49
No 1
EFFECT OF USING CHEMICAL ADDITIVES ON THE PERFORMANCE OF ASPHALT PAVEMENT EXPOSED TO WASTEWATER
Samir
Abdalla
Hassan
Ahmed
Ayman
Othman
Mostafa
Hashem
It is known that water is the first enemy of asphalt pavement, and its danger increases when the water is a product of sewage because it contains organic materials and acids. The most common technique to mitigate moisture damage is using of additives or modifiers with the asphalt binder or the aggregate. The objective of this research is to study the effect of wastewater on the mechanical properties of HMA containing chemical additives. Three different chemical additives were used. The chemical additives were Addicrete PVS, Adibond 65 and Silica Gel that were added with different percentages 5, 10, 15 and 20 % by the weight of optimum asphalt content in additional to the original mix. All asphalt mixtures were submerged in wastewater for 3, 7 and 15 days. Marshall and Indirect tensile strength tests were performed on these exposed mixtures in spite of that the wastewater decreased the mechanical properties of all mixtures the additives decrease that effect with pronounced values. The best additive was Addicrete PVS with 10% content of (O.A.C) as it gives the highest value of Marshall stability, Marshall stiffness, Marshall quotient and indirect tensile strength.
Addicrete PVS
Adibond 65
Silica gel and hot mix asphalt
2021
01
01
107
130
https://jesaun.journals.ekb.eg/article_145948_5b8d3ba6844637f3a46ae5111b422807.pdf