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Université de Fribourg

Multidrug-resistant Acinetobacter baumannii strains carrying the blaOxA-23 and the blaGES-11 genes in a neonatology center in Tunisia

Charfi-Kessis, Karama ; Mansour, Wejdene ; Khalifa, Anis Ben Haj ; Mastouri, Maha ; Nordmann, Patrice ; Aouni, Mahjoub ; Poirel, Laurent

In: Microbial Pathogenesis, 2014, vol. 74, p. 20–24

Multidrug-resistant and difficult-to-treat Acinetobacter baumannii may be responsible for nosocomial infections. The production of carbapenem-hydrolyzing class D β-lactamases (CHDLs) and extended-spectrum β-lactamase (ESBLs) of the GES type possessing a carbapenemase activity has been increasingly reported worldwide in A. baumannii. The aim of this study was to analyze the...

Université de Neuchâtel

Stochastic forecasts of seawater intrusion towards sustainable groundwater management : application to the Korba aquifer (Tunisia)

Kerrou, Jaouher ; Renard, Philippe ; Cornaton, Fabien ; Perrochet, Pierre

In: Hydrogeology Journal, 2013, vol. 21, no. 2, p. 425-440

A stochastic study of long-term forecasts of seawater intrusion with an application to the Korba aquifer (Tunisia) is presented. Firstly, a geostatistical model of the exploitation rates was constructed, based on a multi-linear regression model combining incomplete direct data and exhaustive secondary information. Then, a new method was designed and used to construct a geostatistical model of the...

Université de Fribourg

The filament event near the Cenomanian-Turonian boundary in Tunisia: filament origin and environmental signification

Negra, Mohamed Hédi ; Zagrarni, Mohamed Faouzi ; Hanini, Amine ; Strasser, André

In: Bulletin de la Société Géologique de France, 2011, vol. 182, no. 6, p. 507-519

Near the Cenomanian-Turonian boundary, the filament event corresponds to the massive occurrence of thin elongate shells, probably bivalves which constitute, in the Bahloul Formation, about 40% of allochems. This biosedimentary event was described in several areas, such as in Tunisia, Algeria, Morocco, North America, Oman and Tibet. In Tunisia, filaments are well represented within well laminated...

Université de Neuchâtel

Field experimentation and modelling of salt transfer in Korba coastal plain : impact of seawater intrusion and irrigation practices

Slama, Fairouz ; Perrochet, Pierre (Dir.) ; Bouhlila, R. (Codir.)

Thèse de doctorat : Université de Neuchâtel, 2010 ; 2197.

Seawater intrusion and agricultural pollution are the major sources of groundwater contamination and salinization in coastal irrigated areas. The Korba coastal aquifer, located in the Cap Bon peninsula, North-East of Tunisia, has been intensively exploited since the seventies. Several studies reported the sharp piezometric drop and groundwater salinization. Seawater intrusion was presented as the...

Université de Neuchâtel

Status of the Korba groundwater resources (Tunisia): observations and three-dimensional modelling of seawater intrusion

Kerrou, Jaouher ; Renard, Philippe ; Tarhouni, Jamila

In: Hydrogeology Journal, 2010, vol. 18, no. 5, p. 1173-1190

The Korba aquifer is located in the east of the Cape Bon peninsula in Tunisia. A large groundwater depression has been created in the central part of the aquifer since the 1980s, due to intense groundwater pumping for irrigation. The data collected show that the situation continues to deteriorate. Consequently, seawater is continuing to invade a large part of the aquifer. To better understand the...

Université de Fribourg

The global bio-events at the Cenomanian-Turonian transition in the reduced Bahloul Formation of Bou Ghanem (central Tunisia)

Robaszynski, Francis ; Zagrarni, Mohamed Faouzi ; Caron, Michèle ; Amédro, Francis

In: Cretaceous Research, 2010, vol. 31, no. 1, p. 1-15

In central Tunisia, the thickness of the Bahloul Formation varies generally between 20 to 40 m such as for example, respectively, at wadi Smara near Kalaat Senan and at wadi Bahloul near Maktar. The thickness is also of several tens metres at Koudiat el Azreg near Jerissa and at Tajerouine. In these sites where the thickness of the Bahloul Formation is dilated, in addition to five geochemical...

Université de Neuchâtel

Late Cretaceous to early Paleocene climate and sea-level fluctuations : the Tunisian record

Adatte, Thierry ; Keller, Gerta ; Stinnesbeck, Wolfgang

In: Palaeogeography, Palaeoclimatology, Palaeoecology, 2002, vol. 178, p. 165-196

Climate and sea-level fluctuations across the Cretaceous–Tertiary (K–T) transition in Tunisia were examined based on bulk rock and clay mineralogies, biostratigraphy and lithology in five sections (El Melah, El Kef, Elles, Ain Settara and Seldja) spanning from open marine to shallow inner neritic environments. Late Campanian to early Danian trends examined at El Kef and Elles indicate an...