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  • 1
    Keywords: Nordafrika ; Erdölgeologie ; Lagerstätte ; Erdgas ; Erdöl ; Erdöllagerstätte ; Erdgaslagerstätte ; Geologie ; Tektonik ; Atlas (Gebirge) ; Kohlenwasserstoffe ; Petroleum ; Geology ; Africa, North ; fossile Brennstoffe ; Exploration und Prospektion von Bodenschätzen
    Description / Table of Contents: Duncan S. Macgregor: Introduction / Geological Society, London, Special Publications, 132:1-6, doi:10.1144/GSL.SP.1998.132.01.01 --- Palaeozoic and Sub-Salt Regional Papers --- David R. D. Boote, Daniel D. Clark-Lowes, and Marc W. Traut: Palaeozoic petroleum systems of North Africa / Geological Society, London, Special Publications, 132:7-68, doi:10.1144/GSL.SP.1998.132.01.02 --- Marc W. Traut, David R. D. Boote, and Daniel D. Clark-Lowes: Exploration history of the Palaeozoic petroleum systems of North Africa / Geological Society, London, Special Publications, 132:69-78, doi:10.1144/GSL.SP.1998.132.01.03 --- Duncan S. Macgregor: Giant fields, petroleum systems and exploration maturity of Algeria / Geological Society, London, Special Publications, 132:79-96, doi:10.1144/GSL.SP.1998.132.01.04 --- B. Fekirine and H. Abdallah: Palaeozoic lithofacies correlatives and sequence stratigraphy of the Saharan Platform, Algeria / Geological Society, London, Special Publications, 132:97-108, doi:10.1144/GSL.SP.1998.132.01.05 --- K. Echikh: Geology and hydrocarbon occurrences in the Ghadames Basin, Algeria, Tunisia, Libya / Geological Society, London, Special Publications, 132:109-129, doi:10.1144/GSL.SP.1998.132.01.06 --- Paul Logan and Ian Duddy: An investigation of the thermal history of the Ahnet and Reggane Basins, Central Algeria, and the consequences for hydrocarbon generation and accumulation / Geological Society, London, Special Publications, 132:131-155, doi:10.1144/GSL.SP.1998.132.01.07 --- Palaeozoic Reservoirs and Fields --- Rob Crossley and Neil McDougall: Lower Palaeozoic reservoirs of North Africa / Geological Society, London, Special Publications, 132:157-166, doi:10.1144/GSL.SP.1998.132.01.08 --- Mohamed Robert Djarnia and Berrached Fekirine: Sedimentological and diagenetic controls on Cambro-Ordovician reservoir quality in the southern Hassi Messaoud area (Saharan Platform, Algeria) / Geological Society, London, Special Publications, 132:167-174, doi:10.1144/GSL.SP.1998.132.01.09 --- N. Alem, S. Assassi, S. Benhebouche, and B. Kadi: Controls on hydrocarbon occurrence and productivity in the F6 reservoir, Tin Fouyé-Tabankort area, NW Illizi Basin / Geological Society, London, Special Publications, 132:175-186, doi:10.1144/GSL.SP.1998.132.01.10 --- Rabah Chaouchi, M. S. Malla, and F. Kechou: Sedimentological evolution of the Givetian-Eifelian (F3) sand bar of the West Alrar field, Illizi Basin, Algeria / Geological Society, London, Special Publications, 132:187-200, doi:10.1144/GSL.SP.1998.132.01.11 --- Mesozoic-Cenozoic Regional Papers --- Duncan S. Macgregor and Richard T. J. Moody: Mesozoic and Cenozoic petroleum systems of North Africa / Geological Society, London, Special Publications, 132:201-216, doi:10.1144/GSL.SP.1998.132.01.12 --- R. Guiraud: Mesozoic rifting and basin inversion along the northern African Tethyan margin: an overview / Geological Society, London, Special Publications, 132:217-229, doi:10.1144/GSL.SP.1998.132.01.13 --- M. Wilson, R. Guiraud, C. Moreau, and Y. J.-C. Bellion: Late Permian to Recent magmatic activity on the African-Arabian margin of Tethys / Geological Society, London, Special Publications, 132:231-263, doi:10.1144/GSL.SP.1998.132.01.14 --- M. L. Keeley and M. S. Massoud: Tectonic controls on the petroleum geology of NE Africa / Geological Society, London, Special Publications, 132:265-281, doi:10.1144/GSL.SP.1998.132.01.15 --- Al Moundir Morabet, Rabah Bouchta, and Haddou Jabour: An overview of the petroleum systems of Morocco / Geological Society, London, Special Publications, 132:283-296, doi:10.1144/GSL.SP.1998.132.01.16 --- Moesozoic Reservoirs and Fields --- S. M. Richardson, N. Vivian, R. J. Cook, M. Wilkes, and H. Hussein: Application of fault seal analysis techniques in the Western Desert, Egypt / Geological Society, London, Special Publications, 132:297-315, doi:10.1144/GSL.SP.1998.132.01.17 --- Rutger Gras and Bindra Thusu: Trap architecture of the Early Cretaceous Sarir Sandstone in the eastern Sirt Basin, Libya / Geological Society, London, Special Publications, 132:317-334, doi:10.1144/GSL.SP.1998.132.01.18 --- D. Spring and O. P. Hansen: The influence of platform morphology and sea level on the development of a carbonate sequence: the Harash Formation, Eastern Sirt Basin, Libya / Geological Society, London, Special Publications, 132:335-353, doi:10.1144/GSL.SP.1998.132.01.19 --- R. G. Loucks, R. T. J. Moody, J. K. Bellis, and A. A. Brown: Regional depositional setting and pore network systems of the El Garia Formation (Metlaoui Group, Lower Eocene), offshore Tunisia / Geological Society, London, Special Publications, 132:355-374, doi:10.1144/GSL.SP.1998.132.01.20 --- A. Zaïer, A. Beji-Sassi, S. Sassi, and R. T. J. Moody: Basin evolution and deposition during the Early Paleogene in Tunisia / Geological Society, London, Special Publications, 132:375-393, doi:10.1144/GSL.SP.1998.132.01.21 --- The Atlas Fold Belt --- R. Bracène, A. Bellahcène, D. Bekkouche, E. Mercier, and D. Frizon de Lamotte: The thin-skinned style of the South Atlas Front in Central Algeria / Geological Society, London, Special Publications, 132:395-404, doi:10.1144/GSL.SP.1998.132.01.22 --- Mark A. Morgan, John Grocott, and Richard T. J. Moody: The structural evolution of the Zaghouan-Ressas Structural Belt, northern Tunisia / Geological Society, London, Special Publications, 132:405-422, doi:10.1144/GSL.SP.1998.132.01.23 --- Karim Mekireche, Nordine Sabaou, and Reda-Samy Zazoun: Critical factors in the exploration of an Atlas intramontane basin; the Western Hodna Basin of northern Algeria / Geological Society, London, Special Publications, 132:423-432, doi:10.1144/GSL.SP.1998.132.01.24
    Pages: Online-Ressource (442 Seiten) , Illustrationen, Diagramme, Karten
    ISBN: 1862390045
    Language: English
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Fish physiology and biochemistry 11 (1993), S. 329-335 
    ISSN: 1573-5168
    Keywords: thyroid hormones ; nutrition ; red drum ; thyroxine ; triiodothyronine ; growth
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Description / Table of Contents: Résumé Chez de jeunes corbes rouges (Sciaenops ocellatus), élevés à 25°C avec des régimes alimentaires variables, des prélèvements sanguins ont été effectués durant 8 semaines pour étudier les relations existantes entre la croissance et les niveaux des hormones thyroïdiennes. Les taux de croissance maximum sont obtenus grâce aux régimes artificiels et aux régimes simulant la consommation naturelle de crevettes. Parallèlement à ces taux de croissance élevés, on observe une augmentation des niveaux de T3, mais pas de modification nette des niveaux de T4. Une diminution de la ration alimentaire induit une diminution du taux de croissance associé à des niveaux plus faibles de T3, mais pas de T4. Pour vérifier si une augmentation de poids peut être obtenue grâce à une supplémentation hormonale, des additions de T3 et T4 à 2, 10 et 50 mg/kg d'aliment ont été effectuées. Une augmentation significative des niveaux plasmatiques de T3 est observée avec les régimes alimentaires contenant 10 et 50 mg T3/kg, cependant il n'y a pas d'effets anaboliques nets de la T3, et le régime contenant 50 mg T3/kg a été associé à une diminution du gain pondéral. Les régimes alimentaires contenant de la T4 n'a pas d'effet sur la croissance et sur les niveaux de T3 circulants, et présentent de faibles effets sur les niveaux de T4, ce qui indique que la T4 n'est pas absorbée efficacement par l'instestin. La salinité (6–35 ppm) ne modifie pas les réponses aux traitements hormonaux. Les niveaux de T3 sont étroitement liés à la croissance chez les animaux témoins, mais les niveaux de T4 demeurent insensibles aux variations des niveaux d'alimentation. La supplémentation en T3 n'est pas un moyen efficace pour stimuler la croissance du corbe rouge qui suit un régime alimentaire optimisé. Parce que les hormones thyroïdiennes réguleraient le métabolisme intermédiaire chez le corbe rouge, les niveaux endogènes élevés d'hormones thyroïdiennes apparaissent adéquats pour répondre aux besoins tissulaires durant la croissance des juvéniles en élevage.
    Notes: Abstract Juvenile red drum (Sciaenops ocellatus) were cultured at 25°C on a variety of diets and blood sampled over eight weeks to examine the relationship between growth and plasma thyroid hormone levels. Maximum growth rates were achieved on formulated experimental diets and a simulated natural shrimp diet. Associated with these maximal rates was a significant increase in triidothyronine (T3), but no consistent change in thyroxine (T4). Reduced rations of diets resulted in low growth rates associated with significantly lowered levels of T3 but not T4. To determine whether weight gain could be increased by application of exogeneous hormone, diets were supplemented with T3 or T4 at 2, 10, and 50 mg hormone/kg diet. Significantly elevated T3 was induced by supplementation with 10 and 50 mg T3/kg diet, although there were no indications of an anabolic effect of T3 incorporation, and 50 mg T3/kg diet was in fact associated with decreased weight gain. Incorporation of T4 into diets had no effect on growth or T3, and had effects on T4 which were small and inconsistent, indicating that T4 may not be effectively absorbed from the gut. No difference was found in response to hormone feeding between low (6 ppt) or high (35 ppt) water salinity. T3 levels thus appear to closely parallel growth in fish on unsupplemented diets, whereas T4 which were small and manipulation. Supplementation with T3 is not an effective means of stimulating growth in red drum fed optimum diets. Whereas thyroid hormones may function to regulate intermediary metabolism in red drum, elevated endogenous thyroid hormone levels appear adequate to supply tissue needs during juvenile growth in culture.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Fish physiology and biochemistry 12 (1994), S. 369-380 
    ISSN: 1573-5168
    Keywords: red drum ; Sciaenops ocellatus ; thyroid hormones ; diet ; growth ; body composition
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Four separate 8-week feeding trials were conducted to assess the effects of supplementing semipurified diets with either triiodothyronine (T3) or thyroxine (T4) at 0, 2, 10, and 50 mg/kg on growth and body composition of juvenile red drum (Sciaenops ocellatus) held in artificial brackish water (6‰) and artificial seawater (32‰). At both levels of salinity, increasing doses of T3 resulted in fish with reduced weight gain, feed efficiency, condition factor (weight × 100/length3), and muscle ratio (muscle weight × 100/body weight), as well as a lighter body color. Significant (p 〈 0.05) effects of T3 on the proximate composition of whole body, liver, and muscle were variable, generally reflecting decreased lipid and protein storage in liver and muscle, respectively. The two highest doses of T3 given to seawater adapted fish increased survival. Dietary T4 supplementation had no distinctive effects on appearance, growth or proximate body composition. These results indicate that whereas T3 may function to regulate protein and lipid metabolism in red drum, dietary supplementation with T3 leads to a hyperthyroidism-induced catabolic state. The elevated endogenous thyroid hormone levels found in fish fed optimal diets may thus adequately supply tissue needs during juvenile growth.
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  • 4
    ISSN: 0018-019X
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: As a direct test of the Cane-Westley hypothesis concerning the mode of assembly of ether rings in the polyether class of ionophore antibiotics, we describe experiments culminating in the synthesis of three putative intermediates on the monensin biosynthetic pathway and incorporation experiments with these materials and the monensin-producing organism Streptomyces cinnamonensis. The putative intermediates synthesised include the trienes [21-3H]-7 and [13-3H]-10, and the diene [9-3H]-11. The results of the incorporation experiments conducted with whole cell cultures suggest that [13-3H]-10 and [21-3H]-7 are unable to cross the intact cell membrane of S. cinnamonensis, whereas diene [9-3H]-11 can gain entry to the cellular interior, but is then degraded efficiently, most likely by a pathway closely related to β-oxidation, without being specifically incorporated into the antibiotic.
    Additional Material: 2 Ill.
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  • 5
    ISSN: 0018-019X
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The ability of the monensin-producing organism Streptomyces cinnamonensis to bioconvert the (E)-and (Z)-isomers of nerolidol (= 3,7,1 1-trimethyldodeca-1,6,10-trien-3-ol) into new oxygenated products has been investigated. When a 3H-labelled racemic form of each sesquiterpene was added to fermentations of S. cinnamonensis, several new 3H-labelled products could be detected. Two products were isolated from bioconversion of (E)-nerolidol, the amide 8 and the 9 (Scheme 2), whereas four products were isolated from the bioconversion of (Z)-nerolidol, the epoxydiol 10, triols 11 and 12, and the tetrahydrofuryl alcohol 13 (Scheme 4). Products 9-13 were obtained as a 1 : 1 mixture of diastereoisomers, and 12 was shown to arise by the overall anti addition of two OH groups to the trisubstituted (Z)-double bond of (Z)-nerolidol. Both isomers of nerolidol as well as the acetylene 7 are inhibitors of monensin production in shake cultures of S. cinnamonensis.
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  • 6
    ISSN: 0142-2421
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Physics
    Notes: The precise geometrical relationship between the ion and electron beams and the sample affects the depth resolution of sputter-depth profiles in AES. A theory is presented which predicts this instrumental depth resolution by considering the shape of the ion-eroded crater and the corresponding orientation of the electron beam. The variation in depth resolution is analysed for a range of conditions including (a) varying ion and electron beam diameter (b) the angular orientation of the electron and ion beam and (c) the effect of misalignment of the two beams.
    Additional Material: 11 Ill.
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  • 7
    ISSN: 0044-8249
    Keywords: Atropisomerie ; Isomerisierungen ; Makrocyclen ; Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Additional Material: 2 Ill.
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  • 8
    ISSN: 0570-0833
    Keywords: atropisomerism ; isomerizations ; macrocycles ; Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
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