547 research outputs found
Interview with Mostafa Moharram
No full textهذه المقابلة مع المؤلف والسيناريست المصري مصطفى محرم. يستعرض كتاباته وأفلامه ، ويؤكد على أهمية السيناريو والكتابات المتخصصة . يشرح دور كاتب السيناريو وهو المسؤول عن خلق عمل فعال وجيد ، وكذلك التعامل بطريقة جيدة مع فريق التمثيل . أجرت المقابلة درية شرف الدينIn this interview, Egyptian author and screenwriter Mostafa Moharram speaks about his movies and the importance of scenarios in creating good work. The interview was conducted by Dorreya Sharaf al-Din
Detection and Analysis of Epilepsy Biomarkers in Electrocorticography
No full textAuthor Mostafa MohammadpourDissertation Johannes Kepler Universität Linz 202
Detection and Analysis of Epilepsy Biomarkers in Electrocorticography
No full textAuthor Mostafa MohammadpourDissertation Johannes Kepler Universität Linz 202
Etude du perçage et du soudage laser : dynamique du capillaire
No full textThe aim of the present work is to study experimentally the formation of the capillary during the drilling and welding by laser beam and to develop the numerical simulation which allows following the dynamics and the evolution of the keyhole. The zinc was chosen as a test material because its thermodynamical properties are well known. To simplify the problem, in the first place the drilling mechanism was studied. Two experimental methods were used to characterize the evolution of the keyhole: the Direct Observation of Drilled Hole method, which allows the visualization of the keyhole after the application of laser pulses of different durations, and Zn-Quartz method, which allows the direct observation of keyhole evolution with CCD camera through the layer of quartz. Then, the information on keyhole evolution was used to develop the simulation of drilling mechanism. After studying the beam power deposition inside the capillary with taking in account the multiple photon reflections, and after estimation of the energy and matter loss during the process, we developed the simulation with FEM software COMSOL Multiphysics, which contains coupled heat transfer, fluid flow and free surface problem allowing considering the effect of recoil pressure on liquid phase ejection. We could observe the formation of an important bolster surrounding the keyhole and the increase of keyhole depth with time. Next, we studied the formation of the keyhole during the laser welding, in other words, during the displacement of the heat source. Using the same technique that was developed for laser drilling, we have obtained the information on keyhole evolution during zinc-quartz welding. We have created the simple simulation, where keyhole temperature and profile were considered as known a priori. We have stated that this model, which takes in account only conduction heat transfer problem, allows to reproduce well the shape of the melted zone both for zinc-zinc and zinc-quartz couplesL’objectif de ce travail est d'étudier expérimentalement la formation du capillaire durant le perçage et le soudage par faisceau laser, et de développer une simulation numérique permettant de reproduire la dynamique de formation et d'évolution du capillaire. Nous avons fait le choix d’utiliser comme matériau test le Zinc, en raison de ses propriétés thermodynamiques. Afin de simplifier le problème, nous avons étudié dans un premier temps le mécanisme de perçage. Deux méthodes expérimentales ont été utilisées pour caractériser l'évolution de la géométrie du capillaire : La méthode DODO (Direct Observation of Drilled hOle ) permet de visualiser le capillaire après perçage pour différentes durées et la méthode Zn-Quartz permet d’observer directement son évolution temporelle par camera rapide à travers une lame de quartz. Puis nous avons utilisé cette évolution pour mettre au point une simulation du mécanisme de perçage. Après avoir étudié le dépôt de puissance à l’intérieur d’un capillaire en tenant compte des réflexions multiples et estimé l'importance de la perte d'énergie et de matière lors du processus, nous avons développé une simulation en utilisant le logiciel Comsol Multiphysics couplant l'équation thermique, l'équation de Navier Stokes et prenant en compte le déplacement du métal fondu sous l’action de la pression de recul. Dans ce cas, on observe la formation d’un bourrelet important au bord du trou et une augmentation de la profondeur du capillaire. Ensuite nous avons étudié la formation du capillaire durant le soudage laser, c'est-à-dire avec déplacement de la source. A partir des techniques mises en œuvre pour l’étude du perçage nous avons obtenu l’évolution de la forme du capillaire dans le cas du soudage Zn/Quartz. Nous avons réalisé une simulation relativement simple en supposant la géométrie et la température du capillaire connues a priori. Nous avons constaté qu’un modèle simple, modélisant uniquement les transferts thermiques par conduction, permet de bien simuler la forme de la zone fondue pour les couples Zn/Zn et Zn-quartz
Study of drilling and welding laser : dynamics of keyhole
No full textL’objectif de ce travail est d'étudier expérimentalement la formation du capillaire durant le perçage et le soudage par faisceau laser, et de développer une simulation numérique permettant de reproduire la dynamique de formation et d'évolution du capillaire. Nous avons fait le choix d’utiliser comme matériau test le Zinc, en raison de ses propriétés thermodynamiques. Afin de simplifier le problème, nous avons étudié dans un premier temps le mécanisme de perçage. Deux méthodes expérimentales ont été utilisées pour caractériser l'évolution de la géométrie du capillaire : La méthode DODO (Direct Observation of Drilled hOle ) permet de visualiser le capillaire après perçage pour différentes durées et la méthode Zn-Quartz permet d’observer directement son évolution temporelle par camera rapide à travers une lame de quartz. Puis nous avons utilisé cette évolution pour mettre au point une simulation du mécanisme de perçage. Après avoir étudié le dépôt de puissance à l’intérieur d’un capillaire en tenant compte des réflexions multiples et estimé l'importance de la perte d'énergie et de matière lors du processus, nous avons développé une simulation en utilisant le logiciel Comsol Multiphysics couplant l'équation thermique, l'équation de Navier Stokes et prenant en compte le déplacement du métal fondu sous l’action de la pression de recul. Dans ce cas, on observe la formation d’un bourrelet important au bord du trou et une augmentation de la profondeur du capillaire. Ensuite nous avons étudié la formation du capillaire durant le soudage laser, c'est-à-dire avec déplacement de la source. A partir des techniques mises en œuvre pour l’étude du perçage nous avons obtenu l’évolution de la forme du capillaire dans le cas du soudage Zn/Quartz. Nous avons réalisé une simulation relativement simple en supposant la géométrie et la température du capillaire connues a priori. Nous avons constaté qu’un modèle simple, modélisant uniquement les transferts thermiques par conduction, permet de bien simuler la forme de la zone fondue pour les couples Zn/Zn et Zn-quartz.The aim of the present work is to study experimentally the formation of the capillary during the drilling and welding by laser beam and to develop the numerical simulation which allows following the dynamics and the evolution of the keyhole. The zinc was chosen as a test material because its thermodynamical properties are well known. To simplify the problem, in the first place the drilling mechanism was studied. Two experimental methods were used to characterize the evolution of the keyhole: the Direct Observation of Drilled Hole method, which allows the visualization of the keyhole after the application of laser pulses of different durations, and Zn-Quartz method, which allows the direct observation of keyhole evolution with CCD camera through the layer of quartz. Then, the information on keyhole evolution was used to develop the simulation of drilling mechanism. After studying the beam power deposition inside the capillary with taking in account the multiple photon reflections, and after estimation of the energy and matter loss during the process, we developed the simulation with FEM software COMSOL Multiphysics, which contains coupled heat transfer, fluid flow and free surface problem allowing considering the effect of recoil pressure on liquid phase ejection. We could observe the formation of an important bolster surrounding the keyhole and the increase of keyhole depth with time. Next, we studied the formation of the keyhole during the laser welding, in other words, during the displacement of the heat source. Using the same technique that was developed for laser drilling, we have obtained the information on keyhole evolution during zinc-quartz welding. We have created the simple simulation, where keyhole temperature and profile were considered as known a priori. We have stated that this model, which takes in account only conduction heat transfer problem, allows to reproduce well the shape of the melted zone both for zinc-zinc and zinc-quartz couple
L’année de Bacchus d’El Mostafa Bouignane entre devoir de la mémoire et exaltation de la vie
No full textThis study will discuss the approach to the structure and narrative composition of the novel entitled L\u27année de Bacchus by Mostafa Bouignane, published by Virgule Editions in 2020. This text adds to a series of stories of which Bouignane constructs a narrative universe to reveal the nature of man who, even submissive and reduced, remains capable of regaining his freedom and leading a peaceful life. Thus, our study will propose an analysis of the ideological and historical dimension of this text representative of the literary experience of the author, then at the end the questioning of his human and moral values
Cataglyphis laylae Cedric A. Collingwood & Donat Agosti & Mostafa R. Sharaf & Antonius van Harten 2011, nov. spec.
No full textCataglyphis laylae Collingwood nov. spec. Plates 96–103 Cataglyphis desertorum Forel, 1894, teste Collingwood, 1985; unavailable name according to Agosti (1990). Specimens examined: Holotype: 1 ☿, United Arab Emirates, al-Ain [24°13'N 55°46'E], iii.1995, leg. C.A. Collingwood (MHNG). Paratypes: 3 ☿, al-Ain zoo, 13.iii.2005, CAC. 1 ☿, Remah, 9.iii.1995, CCA. 3 ☿, Remah, resthouse, 250 m, irrigated sand dune [24°10'37"N 55°18'6"E], 18.iii.1995, leg. D. Agosti. 6 ☿, Remah, resthouse, 250 m, irrigated sand dune, nest with one entrance, [24°10'37"N, 55°18'6"E], 18.iii.1995, leg. D. Agosti. 1 ☿, Sharjah Desert Park, 5–6.x.2004, AvH; 1 ☿, 3.iii.2005, CAC. 1 ☿, al- Za'aba, 100 m, sandy soil with Rhaisa stricta [23°43'20"N, 55°33'49"E], 22.iii.1995, leg. D. Agosti. Description: A large worker from al-Ain was selected as holotype. The measurements are as follows: total length 8.40; head width 3.60; head length 4.20; scape length 3.84; funicular segment I 0.40; funicular segment II 0.23; petiole length 1.10; petiole width 0.72. Colour dark reddish brown. There are no exterior hairs on the scapes or hind tibia. The gaster, petiole and propodeum have dorsal hairs. Remarks: This species thought to correspond with C. desertorum has to be described as a new species. In fact it is one of the commonest Cataglyphis in southern Arabia. The main distinguishing feature compared with other dark Cataglyphis is the slender petiole, which has the anterior face more sloped than in other similar species such as C. niger (André, 1882) and C. savignyi (Dufour, 1862). Biology: Cataglyphus laylae nov. spec. does not appear to occur in open sandy desert and is most abundant in disturbed habitats such as man-developed plantations and open cultivated fields. Distribution: This species was recorded by Collingwood (1985) as C. desertorum from Saudi Arabia and Oman and as Cataglyphis spec. by Collingwood & Agosti (1996). Etymology: The new species is named after a village settlement called “Layla”, just north of Riyadh (Saudi Arabia) in the area where the author (CAC) first encountered it in numbers in an Acacia plantation.Published as part of Cedric A. Collingwood, Donat Agosti, Mostafa R. Sharaf & Antonius van Harten, 2011, Order Hymenoptera, family Formicidae, pp. 1-70 in Arthropod fauna of the UAE 4 on page 54, DOI: 10.5281/zenodo.116858
Digital amplification for pathogen detection in bloodstream infections from whole blood
No full textSensitive and specific detection of bacteria is essential for control and treatment of bloodstream infections. Sepsis, a diagnostic challenge of blood stream infections, causes thousands of deaths each year. The gold standard for detection and identification of microorganisms is blood culture, which can take up to 5 days to yield a diagnosis or a negative result. Molecular diagnostic methods and nucleic acid assays developed to detect pathogens often require enrichment through blood culture prior to DNA extraction. Nonetheless, state of the art diagnostic tests that detect pathogens directly from blood are available with limitations. Increased amount of sample processing and purification is required before detection of pathogens and turnaround time to results can be up to 8 hours. Moreover, the sensitivity and specificity of such assays are broad in range. Thus, there is a need for a rapid detection method that can identify pathogens from whole blood within 1-2 hours, with minimal sample processing and high sensitivity and specificity.
In this work, we demonstrate detection of bacterial pathogens from whole blood through loop mediated isothermal amplification without the steps of DNA purification and extraction. Whole blood with pathogens is dried to tubes, creating separated phases of the cellular debris of blood from the amplification reaction and allowing for separation of background human DNA from target DNA as well as better detection of amplicons that are not masked by red blood cells. We show that this method is robust, having a detection limit of 1 cfu of pathogens in 4uL of whole blood. In preparation of processing higher blood volumes in a digital amplification method, we also show characterization experiments and preliminary results of amplification of pathogens from whole blood on chip.Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2021-12-01The student, Ariana Mostafa, accepted the attached license on 2019-12-04 at 05:15.The student, Ariana Mostafa, submitted this Thesis for approval on 2019-12-04 at 05:29.This Thesis was approved for publication on 2019-12-05 at 09:04.DSpace SAF Submission Ingestion Package generated from Vireo submission #14686 on 2020-02-28 at 17:23:14Made available in DSpace on 2020-03-02T22:15:06Z (GMT). No. of bitstreams: 3
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The Egyptian Military in Popular Culture:Context and Critique
No full textThis book examines a key question through the lens of popular culture: Why did the Egyptian people opt to elect in June 2014 a new president (Abdel Fattah al-Sisi), who hails from the military establishment, after toppling a previous military dictator (Hosni Mubarak) with the breakout of the 25 January 2011 Revolution? In order to dissect this question, the author considers the complexity of the relationship between the Egyptian people and their national army, and how popular cultural products play a pivotal role in reinforcing or subverting this relationship. The author takes the reader on a ‘journey’ through crucial historical and political events in Egypt whilst focusing on multi-layered representations of the ‘military figure’ (the military leader, the heroic soldier, the freedom fighter, the conscript, the martyred soldier, and the Intelligence officer) in a wide range of popular works in literature, film, song, TV drama series, and graffiti art. Mostafa argues that the realm of popular culture in Egypt serves as the ‘blood veins’ which feed the nation’s perception of its Armed Forces
The Egyptian Military in Popular Culture:Context and Critique
No full textThis book examines a key question through the lens of popular culture: Why did the Egyptian people opt to elect in June 2014 a new president (Abdel Fattah al-Sisi), who hails from the military establishment, after toppling a previous military dictator (Hosni Mubarak) with the breakout of the 25 January 2011 Revolution? In order to dissect this question, the author considers the complexity of the relationship between the Egyptian people and their national army, and how popular cultural products play a pivotal role in reinforcing or subverting this relationship. The author takes the reader on a ‘journey’ through crucial historical and political events in Egypt whilst focusing on multi-layered representations of the ‘military figure’ (the military leader, the heroic soldier, the freedom fighter, the conscript, the martyred soldier, and the Intelligence officer) in a wide range of popular works in literature, film, song, TV drama series, and graffiti art. Mostafa argues that the realm of popular culture in Egypt serves as the ‘blood veins’ which feed the nation’s perception of its Armed Forces
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