Search results for "Gabon"
showing 10 items of 20 documents
Sedimentary dynamics and extensional structuring related to early Cretaceous rifting of Neocomian and Barremian deposits of the interior basin of Gab…
2008
18 pages; International audience; Recent field and subsurface data about the early Neocomian N'dombo series and the Neocomian to mid-Barremian Schistes series of the interior basin of Gabon further our understanding of the initial stages of early Cretaceous N40–60E extensional rifting. The syn-rift series comprise fluvial–lacustrine claystones–sandstones, rare conglomerates, and carbonates. The syn-rift fill begins with braided-stream feldspathic sandstones. These are overlain first by fluvial–lacustrine deposits and then by predominantly lacustrine–palustrine claystones, which are potential petroleum source rocks. The claystones are eroded in part and are capped by the pre-Aptian angular u…
La dimensione dell'io nelle maglie del realismo e altri studi verghiani
2009
Il volume raccoglie alcuni studi che - ad eccezione del saggio pubblicato in appendice - analizzano determinati testi del Verga, appartenenti al primo tempo della sua produzione novellistica e alla stagione della raccolta "Vagabondaggio". I primi tre saggi, per somigliante approccio, costituiscono idealmente un trittico, perché, pur non prescindendo del tutto da altre prospettive critiche, appaiono mirati più insistentemente a cogliere le articolazioni di un sistema semantico profondo e le risonanze di un linguaggio simbolico. Ne risulta un'esplorazione che, addentrandosi nei territori dell'immaginario verghiano, arricchisce la comprensione delle radici genetiche dei testi studiati. Il quar…
Identification, ecology and use blood meals from hematophagous Diptera (Glossinidae, Stomoxys and Tabanidae) for noninvasive sampling of wildlife in …
2015
The contact between human and wild fauna has considerably increased during these last decades due to the increase of human population size but also to conservation policies. As a consequence, the number of zoonotic diseases soared with a mean of six new infectious diseases per year, 75% of whom being vectorially transmitted. The way to avoid the human contamination by these emergent diseases is based on the efficient vector control resulting from a deep knowledge of the ecology and the feeding behavior of the different vector species. During our work, we have identified and characterized the ecology of 6 tsetse species (Glossina palpalis palpalis, G. fuscipes fuscipes, G. fusca congolense, …
Performance of a rapid diagnostic test for the detection of Cryptosporidium spp. in African children admitted to hospital with diarrhea
2020
Background Cryptosporidium is a protozoan parasite that causes mild to severe diarrhoeal disease in humans. To date, several commercial companies have developed rapid immunoassays for the detection of Cryptosporidium infection. However, the challenge is to identify an accurate, simple and rapid diagnostic tool for the estimation of cryptosporidiosis burden. This study aims at evaluating the accuracy of CerTest Crypto, a commercialized rapid diagnostic test (RDT) for the detection of Cryptosporidium antigens in the stool of children presenting with diarrhoea. Methods A cross-sectional study was conducted in four study sites in Sub-Saharan Africa (Gabon, Ghana, Madagascar, and Tanzania), from…
Tracking zoonotic pathogens using blood-sucking flies as 'flying syringes'
2017
About 60% of emerging infectious diseases in humans are of zoonotic origin. Their increasing number requires the development of new methods for early detection and monitoring of infectious agents in wildlife. Here, we investigated whether blood meals from hematophagous flies could be used to identify the infectious agents circulating in wild vertebrates. To this aim, 1230 blood-engorged flies were caught in the forests of Gabon. Identified blood meals (30%) were from 20 vertebrate species including mammals, birds and reptiles. Among them, 9% were infected by different extant malaria parasites among which some belonged to known parasite species, others to new parasite species or to parasite …
Tectonique salifère et déformation gravitaire de la marge passive sud-gabonaise de l'Albien au Turonien (secteur de Mayumba) Salt tectonic and thin-s…
2003
International audience; L'observation de données sismiques de bonne qualité relatives à la marge passive sud-gabonaise montre : 1) les structures extensives, compressives et inversives albo-turoniennes, associées à la tectonique gravitaire au-dessus du niveau salifère Ezanga (Aptien supérieur). D'est en ouest, ces structures synsédimentaires, d'échelle kilo-métrique, sont en blocs basculés, en anticlinaux, en roll over, en " carapace de tortue ", de nouveau en plis et failles inverses, et enfin en langues de sel déversées vers l'ouest. 2) l'influence du niveau salifère sur la structuration gravitaire ; 3) l'héritage passif syn-rift au niveau des zones hautes anté-salifères qui favorisent la…
The Proterozoic Franceville Basin (S.E. Gabon): an example of interaction between marine sedimentation and extensional faulting.
2006
30 pages; International audience
Marqueurs de tectonique synsédimentaire dans les séries syn- et post-rift du bassin intérieur du Gabon.
2006
9 pages; International audience
New York e i sensi del ritorno
2016
Rifletto più in generale sul senso del vivere, ma, anche, più particolarmente, su una concezione del vagabondaggio tutta americana (gli hobos) e, formalmente, sulle convenzioni scientifiche da adottare per scrivere sulla cultura in chiave autoetnografica, senza obliterare il ruolo della coscienza individuale, tenendo sempre in primo piano il comparativismo interculturale. Questo saggio è più semplice dal punto di vista formale (rispetto ad altri in cui uso espedienti del tipo correlativo oggettivo, flussi di coscienza, collage-bricolage, contestualizzazioni d’uso, etc.). Ma sono contento, lo stesso, per i contenuti antropologici (definire l’America e la sua cultura) e perché, in fondo, pong…
Dynamique sédimentaire des dépôts post-rift du bassin intérieur du Gabon.
2006
14 pages; International audience