11 research outputs found

    Mr. Eric Butterworth: A Short Story

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    Butterworth, the English scholar and the college professor, whose thirst for discovery knows no limits and accordingly leads to his downfall. An eternal journey to darkness, to destiny and eternity. A bitter quest for the self and the unknown that is shrouded in mystery. Africa the land of fertility and sterility, the battle field, and the cemetery where aliens are entrapped, baited and thus preyed ruthlessly. Butterworth’s and Akhona’s unfulfilled desire and passion to join eternity is heart-breaking. The short story is a meticulous reflection of Africanness and the African sensibility

    Marine biotoxins on the Tunisian coast: current state of knowledge: Les biotoxines marines sur le littoral Tunisien

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    International audienceIn Tunisia, the most important sector of aquaculture is shellfish farming industry. Unfortunately, in recent years this sub-sector knows many problems of shellfish contamination due to blooms of toxic algae. This phenomenon occurred for the first time in 1994 in the Gulf of Gabes after the proliferation of Karenia cf. selliformis which synthesizes gymnodimine, a potent neurotoxin. Following these effects, several collection sites especially Boughrara lagoon, were closed for extended periods. Recently, an atypical toxicity was detected, initial characterization studies carried out by LC-MS showed that the toxins detected probably belong to the family PSP toxins. The lagoon of Bizerte was also known since 2006, a repeatable events of contamination of mussels and oysters. As a result, many samples were DSP and PSP positive with concentrations up to 2100 microg eq.STX/100 g meat.Le secteur conchylicole en Tunisie est d’une importanceéconomique capitale. Il connait ces dernièresannées des problèmes de contamination par les phycotoxinessuite à des efflorescences d’algues toxiques. Cephénomène s’est produit pour la première fois en 1994dans le golfe de Gabès après la prolifération d’un dinoflagelléKarenia selliformis qui secrète la gymnodimine.Suite à ces incidences, plusieurs sites de collecteparticulièrement la lagune de Boughrara ont été ferméspendant des périodes prolongées. Une autre toxicitéa été détectée vers l’année 2006; les études decaractérisation faites par LC-MS ont montré que lestoxines détectées appartiennent probablement à lafamille des toxines paralytiques. La lagune de Bizertea connue aussi depuis 2006, d’une manière reproductibledurant les saisons automnales, des évènementsde contamination de moules et de huitres en conséquencedes échantillons se sont révélés DSP et PSPpositifs avec des concentrations allant jusqu’à 2100 μgeq. STX/100 g de chair
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