Search results for "N. Africa"
showing 10 items of 15 documents
Global diversity in the TAS2R38 bitter taste receptor: revisiting a classic evolutionary PROPosal
2016
AbstractThe ability to taste phenylthiocarbamide (PTC) and 6-n-propylthiouracil (PROP) is a polymorphic trait mediated by the TAS2R38 bitter taste receptor gene. It has long been hypothesized that global genetic diversity at this locus evolved under pervasive pressures from balancing natural selection. However, recent high-resolution population genetic studies of TAS2Rs suggest that demographic events have played a critical role in the evolution of these genes. We here utilized the largest TAS2R38 database yet analyzed, consisting of 5,589 individuals from 105 populations, to examine natural selection, haplotype frequencies and linkage disequilibrium to estimate the effects of both selectio…
The Libyan Collections in FI (Herbarium Centrale Italicum and Webb Herbarium) and Studies on the Libyan Flora by R. Pampanini – Part 2
2016
This work is the continuation of Part 1, published in 2015, and comprises the reconstruction of the original collections of new taxa described by R. Pampanini and other botanists and, where possible, typification of the new names and taxonomical updating. The material studied for the most part concerns Libyan specimens held in the FI and FI-W herbaria but in some case also K, LD, MPU, P, PAD, PAL, ULT. Other material, which Pampanini studied in Florence was subsequently conserved in other herbaria. Specimens belonging to 21 families have been examined, from the Najadaceae to Zygophyllaceae. As well as typification, bibliographical data have been provided for those already typified. In this …
Ceramica da cucina dalla "Zona Mura" a Marsala. Le importazioni africane
2014
Object of this written are African cooking ware pieces found during the excavations of the so-called “Zona Mura” in the Archaeological Park of Marsala. Supported by the Soprintendenza BB.CC.AA. of Trapani, research in collaboration with the Universities of Hamburg and Palermo on the topic of “Lilybaeum Archaeological Project” are still in course of making. The stratified kitchen pottery considered was carried out nearby the fortifications’ north-west sector, which showed the remains of structures of Roman age that probably belong to some fortification walls and also to three insulae set in the southern part of the surveyed area. The dynamic pattern of relations between ceramics of different…
La qualité de l'éducation de base en Afrique francophone : contexte, constat et facteurs d'efficacité
2003
03050 - Coll. "Cahiers de l'Académie des Sciences morales et politiques"; L'auteur s'interroge sur l'aspect qualitatif de l'école primaire africaine francophone. Trois questions principales sont abordées : i) dans quel contexte général faut-il apprécier la qualité des systèmes ? ii) quels résultats sur la qualité des apprentissages des élèves ? et iii) sur quels facteurs peut-on agir pour améliorer la qualité de l'école ? C'est ce dernier point qui sert de conclusion.
Polyphased mesozoic rifting from the Atlas to the north-west Africa paleomargin
2021
24 pages; International audience; Based on the interpretation of geological maps, seismic reflection and well data complemented with a bibliographic compilation and field work in the Rif, we investigate the factors that control the rift initiation, its development and the formation of oceanic crust in NW Africa. From SE to NW, we examine the Western Sahara Atlas, the Tendrara, the Guercif, and the Rif basins, to establish their geodynamic evolution in relation with the Mesozoic formation of the Central Atlantic and Maghrebian Tethys oceans, respectively. The Triassic extension was diffuse and developed over Lower Carboniferous horst-and-graben structures formed in the NW passive margin of G…
OHADA: Lei da arbitragem e a harmonizaçao do direito comercial em Africa
2008
L'aricolo esamina il regime dell'arbitrato nell'ambito del diritto commerciale armonizzato dell'OHADA.
Migrations: An Afro-Italian Nights of the Poets / Migrazioni: La notte dei poeti afro-italiana
2012
Poesie commissionate a 16 poeti italiani e 16 poeti nigeriani in occasione del Lagos Black Heritage Festival del 2012, tenutosi a Lagos, Nigeria, dedicato ai rapporti tra Africa e Italia. Tra i poeti nigeriani Soyinka, J.P. Clark, O. Ofeimun, C. Abani, J. Verissimo; tra i poeti italiani Dario Fo, Valerio Magrelli, Stefano Benni, Jolanda Insana, Gezim Hajdari, Ascanio Celestini.
Typification and taxonomic status of Portulaca macrantha (Portulacaceae)
2010
The name Portulaca macrantha (Maire) Ricceri & Arrigoni and its basionym, P. oleracea var. macrantha Maire, from Morocco, are lectotypified. Seed micromorphology demonstrates that the species is distinct from the closely related P. papillatostellulata and P. rausii. It does not occur in Italy.
Jurassic architectural model of the southern Tethys Palaeomargin as deduced from Cenozoic geodynamic evolution of the High Atlas Mountains of Morocco.
2006
40 pages; International audience
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.