STUDY ON THE CONTAMINATION OF FINE GRAINED SOIL WITH MOLASSES DESUGARIZATION LIQUID INDUSTRIAL WASTE (CASE STUDY)
Shawky
M. Hussein
Civil Eng. Egyptian Sugar & Integrated industries Co., Edfu Factories
author
El-Sharif
M. Abdel-Aziz
Civil Eng Dept., Faculty of Eng, Assiut University
author
Sayida
R. Zeedan
Housing & Building National Research Centre " Raw Material and
Processing Institute"
author
Yehya
K. Taha
Civil Eng Dept., Faculty of Eng, Assiut University.
author
text
article
2008
eng
The main problem presented in this paper arises from the acidic impact of the diluted venasis of the "Liquid industrial waste resulting from molasses desugarization" (LIWMD) at refinement factories. This liquid waste emerges through large areas around the reservoirs and spreads into the soil due to the presence of any defect in the tanks and connecting pipes. The (LIWMD) flows through the soil around or under foundations, and with time, reach deep distances into the soil causing many problems. The purpose of this research is to study the effect of (LIWMD) contamination on the physical and mechanical properties of fine grained soil. These properties were determined in the laboratory before and after mixing the soil with the (LIWMD). The results show that the (LIWMD) contamination has significant effect on the soil cohesion. The angle of internal friction also decreases with the increase of the percentage of liquid waste beyond 15%. Also, it has been found that coefficients of consolidation, volume change and permeability decreases with the increase of the amount of liquid waste in the soil.
JES. Journal of Engineering Sciences
Assiut University, Faculty of Engineering
1687-0530
36
v.
No 4
no.
2008
771
785
https://jesaun.journals.ekb.eg/article_116389_bc83caa31eede1df31d446a6c1102a56.pdf
dx.doi.org/10.21608/jesaun.2008.116389
LAND COVER/LAND USE CHANGE DETECTION USING LANDSAT SATELLITE IMAGES: CASE STUDY IN ADEN GOVERNORATE, REPUBLIC OF YEMEN
A. M.
Abdlwahed
Prof. of surveying and geodesy, Civil Eng. Dpt. Faculty of Engineering,
Assiut University
author
Farrag
Ali Farrag
Prof. of surveying and photogrammetry, Civil Eng. Dpt. Faculty of
Engineering, Assiut University.
author
Magda
Saeed Alnoban
Staff member in Faculty of Engineering, Aden University.
author
text
article
2008
eng
Remote sensing techniques become more important for temporal information describing the extent of land resources changes over time, especially in rapidly growing of urban areas. We have developed a methodology to monitor landcover/landuse changes using multitemporal Landsat images. The purpose of this research is to detect changes in landuse/landcover using Landsat satellite images during a period from 1987 up to 2003 for Aden governorate (in Republic of Yemen). Two Landsat images were used. The first one was captured on 1987 by landsat-5 (TM) and the second one was captured on 2003 by landsat-7 (ETM+). To achieve the changes in landcover/landuse different methods of change detection were used such as: Post classification comparison method, Image differencing method, Composite image method, and Normalize difference vegetation method. The objectives of the present study are to detect and map the changes in land use/landcover using multi temporal Landsat images. This study was applied on Aden governorate (Republic of Yemen), over the period 1987 up to 2003.
JES. Journal of Engineering Sciences
Assiut University, Faculty of Engineering
1687-0530
36
v.
No 4
no.
2008
787
798
https://jesaun.journals.ekb.eg/article_116408_e33c7c516eeb2db1edd7b2119bb2bcff.pdf
dx.doi.org/10.21608/jesaun.2008.116408
THE EFFECT OF SOOT LAYER ON TRANSMISSION LOSSES AND NOISE REDUCTION FACTOR OF A DIESEL PARTICULATE FILTER UNIT
Suleiman
Abu-Ein
Department of Mechanical Engineering, Faculty of Engineering
Technology, PO Box 15008
Al Balqa' Applied University, Amman – Jordan
author
text
article
2008
eng
Diesel particulate filters are good tools in gas emission reduction (and also particulate matters) in addition to noise reduction. In this paper the effect of soot layer on both transmission losses and noise reduction factor is studied. It is clear that for both hot and cold conditions the transmission losses with the existence of soot layer are greater than those without soot layer existence, since the soot layer is considered here as a new medium or a new component that increases sound absorption and consequently increases the sound transmission losses.
JES. Journal of Engineering Sciences
Assiut University, Faculty of Engineering
1687-0530
36
v.
No 4
no.
2008
799
812
https://jesaun.journals.ekb.eg/article_116410_6a20be8e9f0300a63a61cd1cf024ca5c.pdf
dx.doi.org/10.21608/jesaun.2008.116410
EFFECT OF POROUS MEDIA PROPERTIES ON TRANSMISSION LOSSES OF A DIESEL PARTICULATE FILTER UNIT
Waleed
Momani
Department of Mechanical Engineering, Faculty of Engineering Technology,
PO Box 15008
Al Balqa' Applied
University, Amman – Jordan
author
text
article
2008
eng
Effect of porous media properties on the sound propagation and transmission losses through such materials and consequently on the noise reduction facto has been studied with the application to diesel particulate filters. Many types of porous diesel particulate filters with different properties and specifications are studied and compared to verify their ability in transmission losses and noise reduction on the exhaust pipe system. It is found that the engineering geometry of diesel particulate filter and porous media properties such as channel width, porous porosity, wall thickness, number of channels and the pressure drop through the porous media has a significant effect on the transmission losses.
JES. Journal of Engineering Sciences
Assiut University, Faculty of Engineering
1687-0530
36
v.
No 4
no.
2008
813
824
https://jesaun.journals.ekb.eg/article_116935_20bd18b7a0a061d6f23cec2abe9e61cd.pdf
dx.doi.org/10.21608/jesaun.2008.116935
EXPERIMENTAL AND THEORETICAL INVESTIGATION OF AN INNOVATIVE EVAPORATIVE CONDENSER FOR RESIDENTIAL REFRIGERATOR
M.M.
Nasr
Department of Mechanical Power Engineering; Faculty of
Engineering, Minia University, Egypt
author
M. Salah
Hassan
Department of Mechanical Power Engineering; Faculty of
Engineering, Minia University, Egypt
author
text
article
2008
eng
In this study, an innovative, evaporative condenser for residential refrigerator was introduced. A vapor compression cycle incorporating the proposed evaporative condenser was tested to evaluate the cycle performance. To allow for evaporative cooling, sheets of cloth were wrapped around condenser to suck the water from a water basin by capillary effect .The thermal properties at the different points of the refrigeration cycle were measured for typical operating conditions. UThe experimental results showed that the condenser temperature increases 0.45 o C for each degree increase in evaporator temperature when the air velocity 2.5 m/s, and the ambient conditions is 29 o C and the relative humidity is 37.5 %, Meanwhile, the condenser temperature increase is 0.88 o C in the case of air velocity 1.1 m/s and ambient conditions of 31 o C and relative humidity of 47.1 %. UA theoretical model for the evaporative condenser was developed, and validated by experimental results. The theoretical model showed that the evaporative condenser can operate at a condensing temperature 20 C lower than that of the air cooled condenser for Uan averageU heat flux of 150 W/m2 , and at air velocity 3 m/s. The effect of the different parameters on the condenser temperature was studied too.
JES. Journal of Engineering Sciences
Assiut University, Faculty of Engineering
1687-0530
36
v.
No 4
no.
2008
825
840
https://jesaun.journals.ekb.eg/article_117284_de9c1734c6bfca836b98908321c56879.pdf
dx.doi.org/10.21608/jesaun.2008.117284
COOLING CHARACTERISTICS OF PARTIALLY HOLLOW FINNED PLATE EXPOSED TO JET IMPINGEMENT
Mohamed
El-sayed Gomaa
Specialized Studies Academy, Workers University, Technology Dept.,
Ismailia, EGYPT.
author
Abd Alla
Galal Gomaa
Refr. and A/C Dept., The Faculty of Industrial Education, Helwan
University, Cairo, EGYPT
author
El-Desuki
Ibrahim Eid
Mech. Dept., the Faculty of Industrial Education, Suez Canal
University, Suez, EGYPT.
author
text
article
2008
eng
In the present work, experimental and numerical investigations have been performed to determine the enhancement of cooling characteristics of partially hollow finned plate due to its exposure to a jet impingement. Six test specimens were designed and manufactured with a particular reference of the heat sink of a PC processor as a test specimen. The hollow shapes were cut in the central zone of the specimens by an adequate cut to form a cylindrical hole or frustum-conical holes of different vertex angles. The effects of Reynolds number, angle of attack and nozzle-to-surface distance on the enhancement of cooling characteristics have been highlighted. Empirical correlations for Nusselt number at the stagnation zone of each hollow shape were exhibited. A three-dimensional numerical simulation using the CFD FLUENT-6.2- code was applied to the case study. The validated CFD model highlights the flow characteristics through the specimens. The results show that the partially hollow finned plate has the potential to deliver a remarkably higher enhancement in the thermal performance if it is compared with those traditional ones.
JES. Journal of Engineering Sciences
Assiut University, Faculty of Engineering
1687-0530
36
v.
No 4
no.
2008
841
862
https://jesaun.journals.ekb.eg/article_117288_866d82c917bfcc53a8df1ffb2fd484d9.pdf
dx.doi.org/10.21608/jesaun.2008.117288
COMPUTATIONAL PREDICTION OF WATER-FLOW CHARACTERISTICS IN SPIRAL SEPARATORS: PART I, FLOW DEPTH AND TURBULENCE INTENSITY
Doheim
, M. A
Mining and Metallurgical Eng. Dept., Faculty of Engineering, Assiut Univ.
author
Abdel Gawad
, A. F
Mechanical Power Eng. Dept., Faculty of Engineering, Zagazig University.
author
Mahran,
G. M. A
Mining and Petroleum Eng. Dept. Faculty of Engineering, Al-Azhar Univ.
author
Abu-Ali
, M. H
Mining and Metallurgical Eng. Dept., Faculty of Engineering, Assiut Univ.
author
Rizk,
A. M
Mining and Metallurgical Eng. Dept., Faculty of Engineering, Assiut Univ.
author
text
article
2008
eng
A spiral separator is one of the commonly-used gravity-concentration devices. It has been widely used in the mineral processing of coal. Also, it is used for the inexpensive pre-concentration of low grade ores. Spiral separator consists of an open trough that twists downward in helical configuration about a central axis. The aim of the present study is the simulation of the flow of water in spiral separators. The study is based on volume of Fluid (VOF) approach and turbulence modeling. The results focus on water-flow characteristics such as the depth of water as well as the turbulence intensity. The results demonstrated that the water depth and turbulence intensity on spiral trough increase smoothly outward. Predicted results are compared with the experimental findings from LD9 coal spiral. Comparison between the predicted and the measured values show good agreement and the most accurate turbulence model is RSM.
JES. Journal of Engineering Sciences
Assiut University, Faculty of Engineering
1687-0530
36
v.
No 4
no.
2008
935
950
https://jesaun.journals.ekb.eg/article_118230_284efa7bb21923075d7f03836ab09e1d.pdf
dx.doi.org/10.21608/jesaun.2008.118230
COMPUTATIONAL PREDICTION OF WATER-FLOW CHARACTERISTICS IN SPIRAL SEPARATORS: PART II, THE PRIMARY AND SECONDARY FLOWS
Doheim,
M. A
Mining and Metallurgical Eng. Dept., Faculty of Engineering, Assiut Univ.
author
Abdel Gawad
, A. F
Mechanical Power Eng. Dept., Faculty of Engineering, Zagazig University.
author
Mahran,
G. M. A.
Mining and Petroleum Eng. Dept. Faculty of Engineering, Al-Azhar Univ.
author
Abu-Ali,
M. H
Mining and Metallurgical Eng. Dept., Faculty of Engineering, Assiut Univ.
author
Rizk,
A. M.
Mining and Metallurgical Eng. Dept., Faculty of Engineering, Assiut Univ.
author
text
article
2008
eng
This study presents a mathematical model to predict water-flow characteristics, especially primary (downstream) and secondary velocities on the spiral trough. The study is based on volume of Fluid (VOF) approach and turbulence modeling. The applied turbulence models are kε, RNG k-ε, SST k-ω, and RSM. The results show that the primary velocity increases on the spiral trough with increasing of the radial distance from central column, and the air friction with the water decreases the primary velocity at the free surface. The model is validated against experimental data from LD9 coal spiral. Comparisons between the predicted and the measured values show good agreements, and the RSM is the most accurate turbulence model while the SST k-ω model is the lowest accuracy.
JES. Journal of Engineering Sciences
Assiut University, Faculty of Engineering
1687-0530
36
v.
No 4
no.
2008
951
961
https://jesaun.journals.ekb.eg/article_118512_00aa1d254b450ed80145878c695dbf52.pdf
dx.doi.org/10.21608/jesaun.2008.118512
INVESTIGATION OF THE CORROSION PROBLEM IN THE PIPELINE OF ENRICHED ALUMINA RECYCLE TO ALUMINIUM CELL
Mohamed
Abdelfatah Doheim
Professor, Mining and Met. Eng. Department, Faculty of Eng. Assiut
University, Assiut, Egypt
author
Shemy
Mohamed Ahmed
Professor, Mechanical Eng. Department, Assiut University, Assiut, Egypt
author
Yasser
Mohamed Abdelrahman
M.Sc student, Engineer,Aluminium Company of Egypt
author
text
article
2008
eng
In this work, the failure of pipeline used for recycling the enriched alumina to self-baked (Soderberg) cells is investigated; the study includes also the deterioration of pipeline that recycling the enriched alumina to pre-baked cells and that recycling fresh alumina. Systematic measurements for the loss in the pipeline –wall thickness with the time are carried out. The gaseous emissions from the cells and the characteristics of enriched alumina are analyzed. Based on the analyses and visual inspections, a corrosive- wear sequence was identified, for the failure of pipeline of Soderberg system. The scales formed on the pipe inner wall are easily destroyed by the alumina impact due to the weak adherence of such scales. This resulted in the exposure of the fresh steel surface to the highly corrosive environment that prevails inside the pipeline, which accelerates the corrosion of the metal. For the pipeline recycling enriched alumina of pre-baked system, hard and dense layers were formed, which were strictly adherent to substrate. The loss in the pipeline wall thickness of the fresh and pre-baked alumina pipelines is negligible compared to Soderberg enriched line (0.5 versus 5.0 mm/year); however, the operating conditions of the particles impact (velocity, particle size, flux) were close to each other in value. Therefore, the failure mode of pipeline in the Soderberg system is an erosioncorrosion process.
JES. Journal of Engineering Sciences
Assiut University, Faculty of Engineering
1687-0530
36
v.
No 4
no.
2008
963
975
https://jesaun.journals.ekb.eg/article_118513_8a3dc672b0a8d4273820745a16b225d4.pdf
dx.doi.org/10.21608/jesaun.2008.118513
THE CONTROL OF LAND USE FOR DEVELOP URBAN EFFICIENCY IN EGYPT "THE CASE STUDY OF THE GREATER CAIRO REGION"
Mohammed
Hassan Atwa
Associate Professor, Department of Architecture & Urban Planning,
Faculty of Engineering, Suez Canal University, Egypt
author
text
article
2008
eng
The land of which it is based projects sites important to be available amounts required by the operations of different types of construction land is a key to human development and construction, thus, the land is one important resources important work of the progress that needs to be an effective administration for the development of architectural. It must be rehabilitation and study of controlling the land uses in best the light of current development within the various regions of the Territory and whether these existing uses "land space - uses different workshops - stores - airport - stadium – factories - graves - slums". The research tries to monitor the most important experiences of local and global and Arab successful in this matter and ends after a series of findings of the study theoretical and applied, which would see the formation of comprehensive and integrated manner enables us to develop the urban efficiency in Egypt.
JES. Journal of Engineering Sciences
Assiut University, Faculty of Engineering
1687-0530
36
v.
No 4
no.
2008
977
1008
https://jesaun.journals.ekb.eg/article_118514_d5bb9871dafacf621e24d33ae23c4fdd.pdf
dx.doi.org/10.21608/jesaun.2008.118514
HUMAN VALUES IN ISLAMIC ARCHITECTURE
Mostafa
A. Mohamed
Researcher, Department of Architecture, Faculty of Engineering,
Assiut University
author
Ezzat
A. Morghany
Department of Architecture, Faculty of Engineering, Assiut University
author
Mohamed
A. Mosa
Department of Architecture, Faculty of Engineering, Assiut University
author
text
article
2008
eng
Many studies and researches have been performed in the field of Islamic architecture, but it has been noticed that human values in this field of studies have not get much concern. This means that there is a need to review Islamic architecture in light of cultural and environmental features not to enrich controversial debate between originality and modernity, but to throw light on human values which are included in the architectural works of Islamic Architecture that has been spread in all over the whole world. This paper aims to study the human values that have been attained through Islamic Architecture according to Islamic teachings from the source of the Islamic law " Sharia " represented in the Holy Quran and Sauna which accomplished happiness and comfort for mankind everywhere. The paper consists of three parts; the first part aims to identify the concept of human values and its role in the field of architecture and construction, through the second part it's possible to recognize the sources of architectural thinking in Islam, and the third part presents an analysis of human values in Islamic architecture. The search comes to approve that Islamic architecture attained human values from the pacific ocean eastward to the Atlantic ocean westward, and from Andalusia and Turkey northward to middle and South Africa southward through the last fourteen centuries
JES. Journal of Engineering Sciences
Assiut University, Faculty of Engineering
1687-0530
36
v.
No 4
no.
2008
1009
1022
https://jesaun.journals.ekb.eg/article_118515_998eb56741c5fd439293112fd1ed6549.pdf
dx.doi.org/10.21608/jesaun.2008.118515
STRATEGY OF DEALING WITH SOLID WASTES IN EGYPTIAN TOWNS
Reham
Mohamed Mohamed Eid
Architecture Engineer
author
Magdy
Mohamed Radwan
Professor and Head of Architecture Department, Faculty of Engineering
Assiut University, Assiut, Egypt
author
Ezzat
Abd-El Meniem Morghany
Associated professor, Architecture Department, Faculty of Engineering
Assiut University, Assiut, Egypt
author
text
article
2008
eng
With the stress of increasing population and development and man’s continuous seek for more welfare, the environment has become exposed to real dangers. Man has polluted the environment with his wastes, which led to imbalance between the elements of the environment. It has become unable to absorb this enormous amount of wastes. The matter of collecting and processing solid wastes has become a social, environmental, and economical problem that is becoming more complex with the development of the civilization. Many countries, including Egypt suffer from the problem of dealing with solid wastes because of absence of the necessary technology that suite the local environment and a scientific strategy that can overcome this problem. However, this paper has aimed to find a strategy to deal with solid matters and can be applied in the Egyptian towns. The paper deals with the concept of the environment and its elements, pollution and dangers of pollution. It also deals with what is meant by solid wastes, classifying these wastes, effects resulting from mess dealing with solid wastes whether they are environmental, hygienical or economical. This paper deals with the problem of solid wastes in Egypt, its amount and the environmental ability to absorb these wastes. It also deals generally with the techniques of dealing with solid wastes and suggesting a strategy to process them that can be applied in the Egyptian towns. The paper ended with a number of important results and recommendations to deal with solid wastes.
JES. Journal of Engineering Sciences
Assiut University, Faculty of Engineering
1687-0530
36
v.
No 4
no.
2008
1023
1039
https://jesaun.journals.ekb.eg/article_118519_d41d8cd98f00b204e9800998ecf8427e.pdf
dx.doi.org/10.21608/jesaun.2008.118519
DISASTERS AND CRISIS MANAGEMENT –AN ADVANCED APPROACH TO DEAL WITH CRISIS
Khaled Mohamed Ahmed
El-Lithy
Architectural Engineering Department, Faculty of Engineering, Assiut University, Assiut, Egypt
author
text
article
2008
eng
This paper demonstrates the importance of disasters and crisis management as one of the main acts for disasters protection and prevention activities. As known, disasters and crisis are results of human behavior and actions against the dangers they are dealing with. This paper focuses on studying the correlation between disasters and human behavior during the disasters management activities. This paper provides a methodology for disasters and crisis management components and stages of advanced information systems and management approaches to support the decision-making process during the stage of recovering the disasters such as floods, earthquakes and similar crisis. The aim of this paper is to decrease of the quantity of damages and losses which may to thousands of houses and communities locate near to the disasters areas. The paper provides an overall framework consisting from several useful points and guidelines in dealing with disasters and crisis. The paper outlines some insights and recommendations which are expected to facilitate and optimize the utilization of scientific and technological and human resources available in regional and local government agencies and the information and decision making Support Centers.
JES. Journal of Engineering Sciences
Assiut University, Faculty of Engineering
1687-0530
36
v.
No 4
no.
2008
1041
1059
https://jesaun.journals.ekb.eg/article_118521_bf1758c9dd4137fcc66660dee4e2007d.pdf
dx.doi.org/10.21608/jesaun.2008.118521