1,723,761 research outputs found
Après la proj... | Discussion autour du film « Ozr el wezzah / The Goose's Excuse », de Mahdy Abo Bahat et Abdo Zin Eldin
No full textDébat après la projection du film « Ozr el wezzah / The Goose's Excuse » avec Mahdy Abo Bahat et Abdo Zin Eldin, les réalisateurs, Sepideh Parsapajouh, chercheuse en anthropologie au Centre d'études en sciences sociales du religieux (CNRS/EHESS), Célia Berby Maillot et Louise Bastin-Ruffel, étudiantes en cinéma respectivement à Paris 3 Sorbonne Nouvelle et Paris 1 Panthéon-Sorbonne.Pour la 8e année consécutive, la BULAC est lieu associé du Cinéma du réel, rendez-vous incontournable du film documentaire international. La dimension internationale de la programmation résonne particulièrement à la BULAC, qui fait le choix de mettre à l’honneur des films ancrés dans les aires géolinguistiques que recouvrent ses collections. Les projections sont accompagnées de débats et de pastilles vidéos avec les réalisateurs, des étudiants et des enseignants-chercheurs
Assessment of offshore wind energy potential in the Middle East: Case studies Egypt, Arabian Peninsula
No full textOffshore wind energy is highlighted as one of the most important resources to be exploited for electrical power production. This is due to the higher wind speed availability and minimal visual impacts compared with onshore wind energy sites. Currently, there is a lack of clear systematic assessment methodology for offshore wind energy potential. A methodology is proposed here addressing this gap and providing global applicability for offshore wind energy exploitation. It is based on the Analytical Hierarchy Process (AHP) and pairwise comparison methods linked to site spatial assessment in a Geographical Information System (GIS). The method is applied to Egypt and then extended to the Arabian Peninsula countries. In 2014, Egypt had plans to scale renewable energy capacity from 1 GW to 7.5 GW by 2020, which was likely to be through solar, onshore wind, and offshore wind energies. Hence, this work will contribute to the proposed Egyptian target and provide seminal outcomes to quantify the offshore wind energy potential and its contribution to the Arabian Peninsula’s countries renewable energy ambitions. The applicability of spatial analysis based on multi-criteria decision analysis was introduced to provide accurate estimates of the offshore wind energy from suitable locations in Egypt where in-depth further analysis of these sites where also carried out. Three suitable high wind areas around the Red Sea in Egypt were identified with minimum restrictions that can provide around 33 GW of installed wind power capacity. The results for Arabian Peninsula countries indicate that by installing 35GW of offshore wind capacity, 25.7 of their electrical demands can be met. Suitability maps are also included providing a blueprint for the development of wind farms at these sites. Sensitivity analyses was undertaken for the Egypt case study to support the robustness of the proposed methodology assumptions and data quality. An economic analysis of sites, defined as the Representative Cost Ratio RCR approach was undertaken was validated using UK site data. The overall results presented for both case studies indicate that the proposed methodology is applicable for local and regional scales. The developed methodology is generalised and is applicable globally to produce offshore wind energy suitability maps for appropriate offshore wind farm locations. The second phase of this research is to provide full wind farm turbine layout and piling design of the sites in Egypt. This included the choice of the appropriate foundations and farm (array) planning for the chosen sites. From a review and analysis of the different available foundation technologies and their suitability in terms soil conditions and of available infrastructure needed for deployment, it was found that a monopile foundation system is most appropriate for the sites. The final monopile dimensions are with 8 cm wall thickness, 6 m diameter, and insertion depth of either 20 m or 24 m. This size will support a 5 MW offshore wind turbine for the identified soil types of the three different proposed locations in Egypt. The final analysis undertaken covers overall cost reductions for the Egyptian sites through optimising the farm layout. This included a study of the port feasibility and environmental impacts of deploying offshore wind turbines in these locations. The layout optimisation designs showed that the optimum layout has a spacing of five times the turbine rotor diameter in both directions. The port feasibility analysis showed that “Distance between port and wind farm location” was the highest weighting factor. In addition, (East Port Said port) is highly recommended to install the first 500MW offshore farm in Egypt for three different locations, predominantly due to proximity to farm site. Finally, the environmental investigation confirmed that deploying offshore wind farms in Egypt is predicted to have minimum impacts on the surrounding ecosystems and other minor impacts are easily mitigated with proper measure
Estimation of knee and ankle angles during walking using thigh and shank angles
No full textBundesministerium für Bildung und Forschung http://dx.doi.org/10.13039/50110000234
Correction: An efficient and rapid intramolecular cyclization of a quadruple Mannich reaction for one-pot synthesis of pentaazaphenalenes and their antimicrobial activities
No full textCorrection for ‘An efficient and rapid intramolecular cyclization of a quadruple Mannich reaction for one-pot synthesis of pentaazaphenalenes and their antimicrobial activities’ by Ahmed F. M. EL-Mahdy et al., RSC Adv., 2016, 6, 92134–92143.</p
The vertical superior longitudinal fascicle and the vertical occipital fascicle
No full textAssociation fibers of the human brain have long been considered to exclusively follow an anterior-posterior direction. Using magnetic resonance imaging techniques that allow in-vivo fiber dissection, vertically oriented association fibers have been rediscovered or newly described. Aside from the frontal aslant tract (FAT) in the frontal lobe, the vertical occipital fascicle (VOF) and the vertical portion of the superior longitudinal fascicle system (vSLF) have been studied in recent years. The aim of this review was to give an overview on the current knowledge regarding these two fiber tracts. A review of the available literature in the Medline database was conducted to gather all available publications dealing with either the VOF or the vSLF. One thousand two hundred seventy-three articles were obtained from the literature search of which a total of 71 articles met the final inclusion criteria of this review. We describe the history of the discovery of the respective fiber tract, its anatomical course and its boundaries integrating blunt fiber dissection studies and functional MRI/tractography studies. We discuss the functional properties of the respective fiber tract and its relevance in neurosurgery. The VOF is a fiber tract that has been discovered in the late XIX century and long been forgotten before being rediscovered in the 1970's. It lies lateral to the fibers of the sagittal stratum and mainly connects the superior and inferior occipital lobe. It plays a major role in reading and visual word and language comprehension and is said to be the main link between dorsal and ventral visual streams. The vSLF has many synonyms and is part of the superior longitudinal fascicle system. Recent studies were able to provide more insight into this set of fiber tracts showing distinct connections running from the superior and inferior parietal lobule to the posterior part of the temporal lobe. Its functional role is still not completely cleared. It is said to play a role in visual and auditory semantic language comprehension. It lies directly lateral to the arcuate fascicle. The VOF and the vSLF are vertically oriented fiber tracts connecting the temporo-parieto-occipital region and play a major role in the communication of dorsal and ventral visual streams (VOF), reading (VOF, vSLF) and visual and auditory semantic language comprehension (vSLF). They can consistently be identified using ex vivo blunt dissection techniques and in-vivo fiber tractography. Because of their localization and orientation these two fiber tracts can be combined to a fiber bundle system called posterior transverse system (PTS)
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