Production des risques dits « naturels » dans les grands centres urbains du Cameroun
Natures Sciences Sociétés, 2018 Cet article examine les facteurs de production des risques dits « naturels » dans les grandes villes du Cameroun. D’une approche historique, il ressort que l’établissement d’agglomérations dans des sites d’aménagement difficile est à la base du problème.
Saha Frédéric +4 more
doaj +1 more source
Synthesis of Conjugated Linear and Cyclic Polyynes by Selective Alkyne Metathesis
Angewandte Chemie, EarlyView.The formation of polyynes with an odd number of conjugated triple bonds is challenging, particularly for complex architectures since most established methods rely on irreversible C–C bond‐forming reactions. To address this, we have developed the synthesis of triynes via alkyne metathesis.
Julien Escudero +12 more
wiley +2 more sources
CONTRIBUTION OF REMOTE SENSING IN THE ANALYSIS OF THE DYNAMICS OF CHOTTS AND SEBKHAS: CASE OF THE ENDOREIC AREA OF GADAIN (NORTHEAST OF ALGERIA) [PDF]
Analele Universităţii din Oradea: Seria Geografie, 2015 The highlands of Eastern Algeria are characterized by an endorheism namely a local base level that does not allow the water system to get to the sea. The Area of chotts and sabkhas of Gadain region can be considered as an area of degradation lands due to
BOUHATA Rabah +2 more
doaj
Intérêt de l’approche géographique dans l’étude des risques liés aux glissements de terrain : le cas de la vallée des Dranses (Haute-Savoie, France) [PDF]
, 1993 L'évolution géomorphologique actuelle de certains versants alpins étudiés ici dépend pour partie des modifications de leur utilisation humaine: la déprise agricole et la rurbanisation tendent parfois à réactiver des glissements de terrain, qui provoquent
Pigeon, Patrick
core +1 more source
THE SPATIO-TEMPORAL ANALYSIS OF URBAN EXPANSION OF BISKRA CITY (SOUTH EASTERN ALGERIA) BY THE USE OF LANDSAT SATELLITE IMAGES [PDF]
Analele Universităţii din Oradea: Seria Geografie, 2016 Understanding urbanization and better management of the city implies a historical perspective of its dynamics. Urban extension which today is a major challenge, is materialized by a rapid urbanization of territories in the margins of cities. Its study in
Rabah BOUHATA +3 more
doaj
Drought from the 1970s to the 1990s and its Influence in the Tropical City of Beni, Eastern DR Congo
Indonesian Journal of Social and Environmental Issues, 2023 Regional and local climate variability has serious consequences on water resources, ecosystems, and socio-economic activities. With the inexistence of rainfall stations, it is important to reconstruct the past climate with existing data and explore new ...
Moïse Musubao Kapiri +4 more
doaj +1 more source
USE OF LANDSAT TM FOR MAPPING LAND USE IN THE ENDORHEIC AREA - CASE OF GADAINE PLAIN (EASTERN ALGERIA) [PDF]
Analele Universităţii din Oradea: Seria Geografie, 2014 Information on land use is essential in environmental projects and ecosystem management, these data allow to approach the reality of lands and understand the challenges of development.
Rabah BOUHATA, Mahdi KALLA, Hadda DRIDDI
doaj
Ocupación urbana de zonas con riesgo de inundación y dinámica territorial: El caso de las aglomeraciones del Gran Nador (Marruecos) [PDF]
, 2018 Flooding in the urban environment has long been a major concern for territorial actors as well as for the local population in the Great Nador region. It affects, in a recurring way, the main urban agglomerations and the peripheral zones which surround ...
El Amrani, Hassan, Tribak, Abdellatif
core +2 more sources
Risques naturels en montagne et analyse spatiale
Cybergeo, 1999 Le concept de risque repose sur deux notions :l'aléa, qui représente le phénomène physique par son amplitude et sa période retour ; la vulnérabilité, qui représente l'ensemble des biens et des personnes pouvant être touchés par un phénomène naturel.Le ...
Yannick Manche
doaj +1 more source
Les vulnérabilités des sociétés et des espaces urbanisés : concepts, typologie, modes d'analyse [PDF]
, 1994 International audienceLe thème des vulnérabilités des sociétés et des espaces urbanisés est abordé à partir de la vingtaine de communications qui, au cours du colloque de Clermont-Ferrand ont traité de cette question (Colloque international : "Croissance
Asté, Jean-Pierre +3 more
core +4 more sources