682 research outputs found
Supplemental Material - Closed-form solutions to investigate the nonlinear response of foundations supporting operating machines under blast loads
No full textSupplemental Material for Closed-form solutions to investigate the nonlinear response of foundations supporting operating machines under blast loads by Ayman Abd-Elhamed, Soliman Alkhatib and Mohamed A. Dagher in Journal of Low Frequency Noise, Vibration and Active Control</p
Procedure for monitoring the safety and security of steel tanks using ground surveying techniques
No full textMeasuring surveying control system for storage steel tanks farm has been developed
for frequent measuring settlement and deformation of tank. The described system
depends on soil investigation and design of precise surveying measurement procedure.
The system included construction of permanent ground control points to be used for
both vertical and horizontal measurements. These points are protected from any move;
therefore they were constructed on stable soil strata at about 40m deep and kept
isolated to avoid the influence of the surrounding soil. Markings for settlements
(50x50x5x100 angles) were fixed to the base and for deformation (2x2cm surveying
stickers) were fixed on every tank ring (11 horizontal shell rings) along 48 vertical
sections. The system is designed to be permanent and give accuracy for settlement
measurements of 0.005 mm and for deformation 2mm. Precise ground surveying
measuring procedure was employed for settlement measurements and deformation
measurements. The system was applied to petroleum tank farm at Portsaid region in
Egypt. Results show deformation behavior at each ring of the tank wall which varied
along the vertical section and position on ring. Two figures of deformations were
measured. The first was due to the manufacture and construction quality which
reached 14.5 cm at some position as initial figure before tanks filling. The second
figure of deformation measurement was that generated due to the effect of filling the
tank with fuel and was expected to be influenced by the characteristic of the tank wall
steel material; that figure reached 5.3 cm at various locations. For settlement two
measurements were observed. The first was to indicate the instant settlement that took
place due to loading effect, and reached 2.7cm in some tanks. The second was for
determining the rate of settlement per year after operating the site, that figure reached
3.76 cm/year for some tanks with total settlement after 42 months of 13.16 cm.
Measurements were taken at different loading conditions and along a period of time
with loading and unloading fluctuation. The designed system allows for precisely
monitoring settlement and deformation over years, thus help in continuously indicate
safety and reliability of the tanks and help in the repair or reconstruction decision
which may be considered for continuing in service.Dr. Ayman Soliman Hassan Aguib,
Associate Professor in Surveying Engineering,
Civil Engineering Department, College of Engineering, King Saud University
P.O. 800, Riyadh-11421, Saudi Arabia.
Email: [email protected]
Hydrellia prosternalis Deeming 1977
No full textHydrellia prosternalis Deeming, 1977 Hydrellia prosternalis Deeming, 1977: 338. Holotype, male. Nigeria (Ibadan) (BMNH). Distribution: AF: Ghana, Ivory Coast, Kenya, Nigeria. PA: Egypt. Egyptian localities: Eastern Desert: Ismailiya, Port Said. Lower Nile Valley & Delta: All Delta. [This species is recorded from rice fields (Isa et al. 1979; Sherif et al. 1997 & 1999; Soliman et al. 1997; Sherif et al. 2005)]. Dates of collection: May to August.Published as part of El-Hawagry, Magdi S., Zatwarnicki, Tadeusz & Ebrahim, Ayman M., 2018, Catalogue of the Egyptian Ephydroidea (Diptera: Schizophora: Acalyptratae), pp. 201-246 in Zootaxa 4444 (3) on page 217, DOI: 10.11646/zootaxa.4444.3.1, http://zenodo.org/record/130962
The problem of corrugator sequencing and its impact on packaging processes
No full textThis report presents the result of an initial step towards an interdisciplinary research partnership between the involved departments at Aleppo and Lund University. The initiator and main author, Dr. Ayman Hamadeh, visited Division of Packaging Logistics during the summer 2008. During that time the authors identified corrugator sequencing as a common research field and embarked on a joint explorative study aiming to identify future research projects within the shared problem area
Thematic Study of “Ayman al-ʿAtūm”’s Prison Novels
No full textThe novel is a prose genre whose origins are thought to be based on epics and whose first examples emerged in Europe. The development of the novel genre in Arab geography has experienced some difficulties. Some types of novels with unique styles were prevented from being distributed and published by various censors. The genre that calls itself prison literature deals with the life stories of prisoners in prison, their torture, and the hardships they experience. The general themes of these novels are freedom, exhaustion, despair, and resistance. Although works have been written in this genre in the West, this genre also has a special place in Arabic literature. Authors such as Abdurrahman Munif, Majid Suleiman, Mustafa Khalifa and Ayman al-ʿAtūm stand out in Arabic literature. Ayman al-ʿAtūm, whose novels feature an Islamist aspect, is one of the most important figures in modern Arabic literature. In both his novels Yā Sāhibeyi’s-Sijn and Yāsmeūne Hasīsehā, he experienced and fictionalized the punishment of rebelling against authority or holding different views in societies ruled by authoritarian regimes and in which democracy exists only in words. In addition to being an engineer, the author is an academic and a man of letters
Alif 24: Archaeology of literature: tracing the old in the new
No full textThis issue of Alif investigates the different strata constituting texts, and the presence of older material (myths, classics, hymns, rituals, romance, philosophical fragments, etc.) as subtexts in literature. Articles explore the processes and modalities of such inclusions in a given work or the corpus of an author. The issue also includes critical essays on the nature of continuity and correspondence in plots, characters, and styles as well as redeployment of older motifs in modern and postmodern works. Contributors: English section: Walid Bitar, Leslie Croxford, Ananya Kabir, Rondo Keele, Steven Nimis, John Rodenbeck, Edward Said, Doris Shoukri, Mounira Soliman, Steffen Stelzer. Arabic section: Mohammed ‘Ajina, Mohammed Birairi, Ayman Al-Desouky, Hasab al-Sheikh Ja‘far, Scheherazade Hassan, Sami Mahdi, Samia Mehrez, Mai Muzaffar/Rafa Nasiri, Lamis Al-Nakkash/Doris Shoukri, Nagwa Sha‘ban.https://fount.aucegypt.edu/faculty_books/1165/thumbnail.jp
Optimal scheduling and resource utilization for repetitive construction projects
No full textRepetitive construction projects require construction crews to repeat their work in a number of locations in the same project, moving from one location to the next. Scheduling this type of projects often requires maximizing work continuity for these crews while reducing the project duration and the use of overtime. The main goal of this study is to present the development of novel models for optimizing the scheduling of repetitive construction projects that is capable of accomplishing these planning objectives. To achieve this goal, the research objectives of this study are to develop (1) a novel heuristic and computationally-efficient scheduling model for repetitive projects that minimizes both the project duration and crew work interruptions; (2) an innovative optimization model for scheduling repetitive construction projects that is capable of searching for and identifying optimal schedules that minimize project duration, work interruptions, and interruption costs; and (3) a novel multi-objective optimization model for repetitive construction projects that generates optimal tradeoffs among project duration, work interruptions, and overtime use.
The performance of these developed models was analyzed and verified by comparing their results to those generated by existing models. The results of this analysis illustrates the novel and unique capabilities of the developed models in generating optimal tradeoffs among project duration, work interruptions, and overtime use. These novel capabilities are expected to provide much needed support to planners of repetitive construction projects and enable them to (i) minimize project duration, (ii) maximize crew work continuity, (iii) minimize interruption costs, (iv) minimize the use of overtime hours; and (v) reduce the required time and effort to perform the scheduling computations for large-scale repetitive construction projects by using a computationally efficient heuristic scheduling model.Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2020-08-01The student, Ayman Altuwaim, accepted the attached license on 2018-07-04 at 11:06.The student, Ayman Altuwaim, submitted this Dissertation for approval on 2018-07-04 at 11:09.This Dissertation was approved for publication on 2018-07-05 at 16:07.DSpace SAF Submission Ingestion Package generated from Vireo submission #12628 on 2018-09-27 at 11:33:14Made available in DSpace on 2018-09-27T16:45:31Z (GMT). No. of bitstreams: 3
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Previous issue date: 2018-07-05Embargo set by: Seth Robbins for item 107857
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Thoracic Esophageal Injury Durging Laparoscopic sleeve gastrectomy, Lesson Learnt & How I managed it
No full textIMPROVEMENT PROPERTIES OF WHEAT FLOUR USING MICROWAVE
No full textIn view of balady bread in Egypt is considered as backbone in diets, accordingly, in this study wheat flour (82%) extraction treated by microwave at 2,4 and 6 minutes, that target to modify starch wheat flour by heating. The rheological properties were studied by using farinograph and extensograph apparatus. Falling number and amylose percent were determined. Balady bread samples were sensory evaluated and staling rate was evaluated. The wheat flour, crust and crumb layers of balady bread were examined by scanning electron microscope (SEM). The results of farinograph indicated that, water absorption arrival time, dough development time and dough stability increased while dough weakening decreased in wheat flour treated by microwave compared with wheat flour untreated (control). The results of extensograph revealed that, dough extensibility, resistance to extension and dough energy increased while proportional number decreased in wheat flour treated by microwave compared with control. Falling number decreased while amylose percent increased when microwave treatment increased from 2 to 6 minutes. Sensory evaluation showed slight decrease in values of both color crust and color crumb while, values of both taste and flavor slightly increased but not significantly different, meanwhile, values of crumb distribution significantly increased in balady bread samples prepared from wheat flour treated by microwave compared with balady bread prepared from untreated wheat flour (control). Wheat flour treated by microwave led to delay staling of balady bread and imilorated freshness of balady bread. The examination by scanning electron microscope (SEM) showed that average size of starch granules increased from 26.10 mm in untreated wheat flour (control) to 29.37 mm in treated wheat flour by microwave at 6 minutes
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