365 research outputs found
Comprendre l'oral n'est pas si facile ! A. Soussi, Y. Baumann, P. Dessibourg, A.-M. Broi, D. Martin. IRDP, Neuchâtel ; LEP, Lausanne, 1998
No full textWirthner Martine. Comprendre l'oral n'est pas si facile ! A. Soussi, Y. Baumann, P. Dessibourg, A.-M. Broi, D. Martin. IRDP, Neuchâtel ; LEP, Lausanne, 1998. In: La Lettre de la DFLM, n°24, 1999/1. pp. 27-28
Comprendre l'oral n'est pas si facile ! A. Soussi, Y. Baumann, P. Dessibourg, A.-M. Broi, D. Martin. IRDP, Neuchâtel ; LEP, Lausanne, 1998
No full textWirthner Martine. Comprendre l'oral n'est pas si facile ! A. Soussi, Y. Baumann, P. Dessibourg, A.-M. Broi, D. Martin. IRDP, Neuchâtel ; LEP, Lausanne, 1998. In: La Lettre de la DFLM, n°24, 1999/1. pp. 27-28
Toxic Release Damage Distance Assessment Based on the Short-Cut Method: A Case Study for the Transport of Chlorine and Hydrochloric Acid in Densely Urbanized Areas in the Mediterranean Region
No full textThe transportation of dangerous goods by road is the most accident-prone mode of transportation, even if accidents involving road transportation of dangerous goods are considered as a Low Probability and High Consequence event (LPHC event). However, several dangerous goods are transported by road networks, such as petroleum products and chemicals, which can generate major dangerous consequences such as spills, explosions, fires, or toxic clouds. In this context, this article presents a method to calculate and quickly quantify the sizes of impact zones characterized by high lethality and irreversible injuries to people in the case of a hazardous materials transport accident. This method is used as a module for the analysis of the consequences of different potential accident scenarios, for the Web-GIS platform proposed by LOSE+LAB, that implements appropriate ICT tools and systems for monitoring the flow of goods that would enable a continuous monitoring system at the cross-border level and transmit data and information to the territory actors involved in the management of dangerous goods according to the ADR standard. The proposed method provides the user with a visualization of the possible outcomes of an event by reproducing the impact area for different accident scenarios, which can provide quick maps of the hazard and represents a decision support system for territorial governance in terms of intervention and response protocols for emergency management in the cases of dangerous goods accidents
Oil spill trajectory: A comparison between 2D and 3D models
No full textOil spills in the marine environment are a harmful threat to the environment, the population, and the economy. For this reason, it is important to know the trajectory of oil slicks in case of a spill in order to prioritize actions for oil recovery and thus to better protect areas exposed to pollution risk. For this purpose, several oil slick drift models are developed to study the impact of various possible scenarios and to estimate the environmental sensitivity of a maritime and coastal area even before this type of accident occurs. In this context, this paper presents the applications of a two (2D) and three-dimensional (3D) oil spill models, suggested to define the trajectory of the oil slick in a marine environment taking into account different meteorological parameters. The two models have been applied to simulate the oil spill propagation in the case of a collision accident that occurred off Saint-Tropez (France) on 7 October 2018
Stratigraphie sismoséquentielle intégrée de la série jurassique dans l’Atlas central de la Tunisie
No full textTanfous-Amri Dorra, Bedir M., Inoubli Mohamed Hedi, Soussi Mohamed. Stratigraphie sismoséquentielle intégrée de la série jurassique dans l’Atlas central de la Tunisie. In: Documents des Laboratoires de Géologie, Lyon, n°156, 2002. STRATI 2002. 3ème congrès français de stratigraphie. Lyon, 8-10 juillet 2002. p. 224
A GIS-Based Safe System Approach for Risk Assessment in the Transportation of Dangerous Goods: A Case Study in Italian Regions
No full textThe Dangerous Goods Transportation (DGT) presents significant challenges, requiring a strong and systematic risk assessment framework to ensure the safety and efficiency of the supply chain. This study addresses a critical gap by integrating a deterministic and holistic approach to risk assessment and management. Utilizing Geographic Information Systems (GIS), meteorological data, and material-specific information, the research develops a data-driven approach to identify analyze, evaluate, and mitigate risks associated with DGT. The main objectives include monitoring dangerous goods flows to identify critical risk areas, optimizing emergency response using a shared model, and providing targeted training for stakeholders involved in DGT. The study leverages Information and Communication Technologies (ICT) to systematically collect, interpret, and evaluate data, producing detailed risk scenario maps. These maps are instrumental in identifying vulnerable areas, predicting potential accidents, and assessing the effectiveness of risk management strategies. This work introduces an innovative GIS-based risk assessment model that combines static and dynamic data to address various aspects of DGT, including hazard identification, accident prevention, and real-time decision support. The results contribute to enhancing safety protocols and provide actionable insights for policymakers and practitioners aiming to improve the resilience of technological systems for road transport networks handling dangerous goods
Glaucony-bearing horizons from shallow-marine siliciclastic deposits of the northern margin of Africa: a case study from the Oligo-Miocene of northern Tunisia
No full textIn spite of our rather comprehensive knowledge on the glauconitic minerals as a reliable tool for basin analysis, we have almost no data from the northern margin of the African continent. Oligo-Miocene shallow-marine deposits are widely exposed in northern, northeastern and central Tunisia. Particularly, northern Tunisian outcrops host numerous glaucony-rich strata, which are superbly exposed at many localities and provide good sites for the study of the green grains. Sedimentological data indicate that the Oligocene glaucony-bearing strata cropping out at Jebel Harb and Jebel Hajra Touila were deposited in shallow-water and shelf environments, respectively, whereas Miocene deposits at Jebel Ben Amara and Gorge de Kasseb are of shelfal and shoreface origin, respectively.
Geochemical analyses of nine glaucony samples show that Oligocene glaucony is invariably more evolved (K2O = 6-8%) than its Miocene counterpart, which is typically slightly evolved (K2O = 4-6%). Vertical changes in glaucony maturity are consistent with the sequence-stratigraphic interpretation, showing in general an upward increase in the transgressive systems tract. Maximum glaucony concentration is recorded in correspondence of the maximum flooding surface/condensed section. Comparison of glaucony characteristics across different depositional systems at the same stratigraphic level shows a slight decrease in maturity and abundance from distal to proximal locations. This lateral tendency reflects more suitable conditions for glauconitization in open-marine environments than in shallow waters
Les rapports de Marrakech avec le monde rural dans le domaine de l'artisanat
No full textThrough its cottage industry, Marrakech keeps a complex and twofold relationship with its rural world. The town itself welcomes rural craftmen, often in financial difficulties, imports raw materials needed by them from the country and spreads further and further away the branches, commercializes cottage industry products made in the small rural centres and the southern country. Conversely, these centres undergo a few modifications thanks tho the présence of this cottage industry focus in Marrakech .'survival of farms, land transformations domestic re-investment. But all these backlash effects seem quite limited.Marrakech entretient avec le monde rural, par le biais de l'artisanat, des rapports complexes et à double sens. La ville accueille des artisans ruraux, souvent en difficulté, importe de la campagne des matières premières nécessaires à son artisanat, en étendant de plus en plus loin ses antennes de collecte, commercialise des produits artisanaux fabriqués dans les petits centres ruraux et les campagnes du sud marocain. Inversement, les campagnes subissent quelques transformations du fait de la présence de ce gros pôle artisanal à Marrakech : survie de l'exploitation agricole, transformations foncières, réinvestissements domestiques. Mais cet effet-retour parait bien limité.Lagdim Soussi M. B. Les rapports de Marrakech avec le monde rural dans le domaine de l'artisanat. In: Méditerranée, troisième série, tome 59, 4-1986. Villes et campagnes au Maroc. pp. 21-31
Glauconitic-rich strata from Oligo-Miocene shallow-marine siliciclastic deposits of the northern margin of Africa (Tunisia): geochemical approach for basin analysis
No full textGlauconitic minerals have long been appreciated as a reliable tool for sequence stratigraphic interpretation. A degree of maturity and occurrence of glauconite are closely related within a system tract context and substrate paleoenvironmental conditions. Within Oligo-Miocene shallow marine deposits of northern Tunisian outcrops, the glauconite occurs as thin (few centimeters) to moderate thick (1 m) clay and fine grain size sandstone horizons which are superbly exposed at many localities. Sedimentological investigations data indicate that these glaucony-bearing strata are deposited under shallow water shelfal and lagoonal siliciclastic depositional systems. Geochemical analysis from nine glaucony samples shows that Oligocene glaucony is invariably more evolved (K2O = 6–8 %) than Miocene glaucony, which is typically slightly evolved (K2O = 4–6 %). Vertical changes in glaucony maturity are consistent with sequence-stratigraphic interpretation, showing in general an upward increase in the transgressive systems tract. Maximum glaucony concentration is recorded corresponding to the maximum flooding surface/condensed section. Comparison of glaucony characteristics across different depositional systems at the same stratigraphic level shows a slight decrease in maturity and abundance from distal to proximal locations. This lateral tendency reflects more suitable conditions for glauconitization in open-marine environments than in shallow waters
Dinosaurs and other fossil vertebrates from fluvial deposits in the Lower Cretaceous of southern Tunisia
No full textRemains of dinosaurs and other vertebrates (sharks, bony fishes, coelacanths, turtles, crocodilians, pterosaurs) are reported from the Chenini Formation of the Tataouine region in southern Tunisia. The Formation is part of the ‘continental intercalaire’, a succession of continental deposits of Early to Late Cretaceous age distributed over the whole of North Africa and the Sahara. It consists of bar and channel deposits of broad rivers that flowed NNW from the mid-Sahara region towards the southern shore of Tethys. Dinosaur-bearing units in the ‘continental intercalaire’ have been dated to the Hauterivian to Cenomanian, and the Chenini Formation is possibly Albian in age. Dinosaur fossils include abundant teeth of the theropods Carcharodontosaurus and Spinosaurus, as well as postcranial elements of theropods and a medium-sized sauropod. A tooth of an ornithocheirid is the first report of a pterosaur from the region. The dinosaur bones and teeth were transported some distance and deposited in a channel lag, associated with less damaged locally derived material such as fern fronds, coprolites, fish teeth and scales, and crocodilian scutes
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