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Étude des saponines isolées d'une espèce d'holothurie <Holothuria tubulosa> de la lagune de Bizerte 20
Tekitek, A.; Sellem, F.; Langar, H.; El Abed, A.; Louiz, I..
قمنا في هذا البحث باستخلاص عدد من الصابونيات من صنف من اصناف خيار البحر المتواجدة ببحيرة بنزرت وهي (اولوتيغيا تيبيلوزا) <tubulosa Holothuria> وتمت دراسة هذه المواد المستخلصة حسب مرحلة النضوج الجنسي و تم كذلك اثبات ان هذا المستحضر ذو مفعول بيولوجي اذ تسبب في انحلال كريات الدم الحمراء
Tipo: Journal Contribution Palavras-chave: Cadmium; Chemical extraction; Cytotoxicity; Saponins; Cadmium; Http://aims.fao.org/aos/agrovoc/c_1178.
Ano: 2003 URL: http://hdl.handle.net/1834/1129
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Seasonal concentrations of some heavy metals in muscle tissues of Siganus rivulatus and Sargus sargus fish from El-mex bay and eastern harbour, Alexandria, Egypt 20
Khaled, A..
The concentration of seven heavy metals (Cd, Cu, Fe, Mn, Ni, Pb and Zn) were detected seasonally in muscle tissues of two fish species (Siganus rivulatus, Sargus sargus) collected from El-Mex Bay and Eastern Harbour. In both species, levels of the seven metals were significantly higher in summer compared with other seasons. The concentrations of such metals decreased in the order Fe > Zn > Cu > Ni ≥ Pb > Mn > Cd. The metal pollution index (MPI) for the two species fluctuated between 0.9 and 1.8 in El-Mex and Eastern Harbour. Provisional Tolerable Weekly Intake (PTWI) demonstrates that the concentration of the metals (Cd, Cu and Pb) in the muscle of Siganus rivulatus and Sargus sargus from El-Mex Bay and Eastern Harbour are much lower than...
Tipo: Journal Contribution Palavras-chave: Accumulation; Biological data; Cadmium; Marine environment; Marine fish; Heavy metals; Marine environment; Cadmium; Http://aims.fao.org/aos/agrovoc/c_4610; Http://aims.fao.org/aos/agrovoc/c_1178.
Ano: 2004 URL: http://hdl.handle.net/1834/1149
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Structure trophique des peuplements de nématodes libres marins dans un milieu expérimentalement enrichi en cadmium et/ou en hydrocarbures (diesel) 20
Mahmoudi, E.; Essid, N.; Beyrem, H.; Hedfi, A.; Boufahja, F.; Aissa, P.; Vitiello, P..
Une étude en microcosme a été entreprise pour examiner l’influence d’un métal lourd (le cadmium) et/ou du diesel sur la structure trophique d’une communauté de nématodes libres provenant de la lagune de Ghar El Melh (Tunisie). Trois doses en cadmium [faible : 0,54 mg Cd kg-1 (poids sec, ps), moyenne : 0,90 mg Cd kg-1 (ps) et forte : 1,40 mg Cd kg-1(ps)], une dose de diesel de 0,25 mg kg-1 (ps) et un mélange de cadmium et de diesel [1,40 mg Cd kg-1(ps) + 0,25 mg kg-1 de diesel (ps)] ont été testées pour évaluer les effets de ces polluants après 90 jours d’exposition. Les résultats des analyses statistiques univariées n’ont montré aucune différence significative pour la plupart des indices des communautés traitées par rapport à l’assemblage témoin. Ainsi,...
Tipo: Journal Contribution Palavras-chave: Nematoda; Cadmium; Chemical pollution; Heavy metals; Microcosms; Pollution effects; Trophic structure; Heavy metals; Cadmium; Http://aims.fao.org/aos/agrovoc/c_2223; Http://aims.fao.org/aos/agrovoc/c_1178.
Ano: 2005 URL: http://hdl.handle.net/1834/3740
Registros recuperados: 3
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