Search results for " Africa"
showing 10 items of 604 documents
Early Warning Systems for Food Security in West Africa: Evolution, Achievements and Challenges
2010
In West Africa, early warning systems (EWSs) for food security have been widely recognized to have contributed, in the last 20 years, to an improved ability to deal with famine emergencies. Nevertheless, despite the advancements in understanding of the environmental and socio-economic dynamics and despite the improved technologies, tackling food security remains a difficult task for decision makers as demonstrated by local food crises in many countries of the region. African Monsoon Multidisciplinary Analysis, while improving the understanding of the monsoon system, allowed us to better orient research challenges to provide EWS with improved products, effectively meeting the needs of end-us…
Developing Lower secondary education: a rural issue and challenge for sub-saharan Africa
2010
The ongoing progresses of coverage of primary education in Sub-Saharan African Countries are inevitably to impact lower secondary education in a significant manner. Beyond the need for all countries to identify a global policy to deal with the problem, it is important to understand that expansion of coverage of lower secondary education will concern rural populations since coverage is generally already relatively high in cities while it is lagging noticeably in rural settings; many schools will need to be built and operate in a near future. A basic characteristic of rural schools is that most of them enroll only a limited number of students and, in current circumstances tend to cost signifi…
Contribution in the 5th Annual ECOSOC AMR E-Discussion on Education: Closing the Gap
2011
En ligne sur www.un.org/en/ecosoc/newfunct/pdf/2011_amr_phase_2_final_digest.pdf; Contribution in the 5th Annual ECOSOC AMR E-Discussion on Education: Closing the Gap; The author focuses on access to education in the countries of sub-saharan africa
Environment and excavation: Pre-lab impacts on ancient DNA analyses
2008
Ancient DNA (aDNA) analyses enjoy an increasing role in palaeontological, archaeological and archaeozoological research. The limiting factor for aDNA studies is the degree of DNA preservation. Our study on 291 prehistoric cattle remains from Europe, the Near East and North Africa revealed that DNA preservation is mainly influenced by geographic and climatic conditions. Especially in hot climates, the preservation of sample material is generally low. We observed that these specimens are prone to further degradation and contamination during and after excavation. We give a description of the main caveats and a short guideline for adequate sample handling in order to facilitate the cooperation …
Les topologies imaginaires de Lauren Beukes dans Moxyland (2008) et The Shining Girls (2013)
2019
International audience; This article examines two novels published by South African writer Lauren Beukes. More specifically, it explores the way in which the two cities in which the novels are set blur a number of boundaries, thus creating paradoxical, and intermedial, topologies.
Pisolithus albus (Sclerodermataceae), a new record for Tunisia
2015
Pisolithus albus was recently collected for the first time in Tunisia. This ectomycorrhizal fungus is found associated with Eucalyptus occidentalis, a new symbiotic relationship, in the urban area of Tunis. The new record of this fungus on this tree permit to expand our knowledge on the ecology and distribution of P. albus in Tunisia. The finding is also important since this fungal symbiont has great potential in forestation efforts. Data on the morphology, molecular identification, distribution and, ecology for P. albus in Tunisia are presented for the first time.
The role of herbaria for taxonomic and distributional studies in Characeae: examples from the Herbarium Mediterraneum Panormitanum (PAL) and the Flor…
2018
Characeae is a taxonomically critical family. Taxonomical uncertainties inevitably affect its distributional data. The role of herbarium specimens, particularly types and original material, is crucial for unravelling taxonomical ‘knots’. Moreover, wet areas have undergone dramatic reduction and modification in the last century and historical herbarium specimens may represent basic documents for the reconstruction of former distributions. Some preliminary data from two different Italian Herbaria are here presented. The Herbarium Mediterraneum Panormitanum (PAL, the standard acronym according to the Index herbariorum, http://sweetgum.nybg.org/ ih) houses four folders of Characeae exsiccata. T…
New records of the genus Orobanche L. (Orobanchaceae) to the Tunisian flora with lectotypification of the name O. rapum-genistae Thuill.
2023
Based on several field surveys and on the study of original material, we have identified three new species of Orobanche L. s.s. (Orobanchaceae) new to the flora of Tunisia. Orobanche alba Willd., O. calendulae Pomel, and O. gracilis Sm. are reported as new for the country, and the occurrence of O. rapum-genistae Thuill. is confirmed. The lectotypification of O. rapum-genistae is here proposed with a specimen housed in Genève (G). The geographical distribution of the four taxa in Tunisia is given, and details of habitats and hosts are provided. Altogether, the genus Orobanche in Tunisia now includes 18 species; a dichotomous key is proposed to facilitate the identification of these taxa.
Libertà, lavoro e architettura negli edifici-simbolo della giovane nazione americana. Attualità di un dibattito : intervista a Mabel Wilson (GSAPP, C…
2022
Il 13 luglio 2000 il Congresso americano sanciva l’urgenza del riconoscimento del lavoro degli afro-americani nella realizzazione del Campidoglio di Washin¬gton, D.C., promuovendo a tal fine la costituzione di una commissione dedicata allo studio del tema (Risoluzione 130, 106° Congresso, 2° sessione). Una decisione che, oltre un secolo e mezzo dopo il completamento dell’edifi¬cio-simbolo della nazione, voleva riconoscere in via ufficiale il ruolo fondamentale svolto dalla forza-lavoro afro americana, restituendo in questo modo alla Storia una più esatta visione del processo che ha portato al suo completamento.
Cooperazione Europa-Africa: aspetti storici e prospettive di sviluppo
2019
Il saggio esamina il modello di cooperazione tra Europa ed Africa comparandolo con gli altri esistenti. Individua i punti di forza e di debolezza del modello e suggerisce ipotesi per un suo miglioramento