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  • 1
    Electronic Resource
    Electronic Resource
    Mechanism of lipid-protein interaction in the plasma lipoproteins: relationship of lipid-binding sites to antigenic sites in apolipoprotein A-II (1979)
    s.l. : American Chemical Society
    Biochemistry 18 (1979), S. 3984-3988 
    Details
    ISSN: 1520-4995
    Source: ACS Legacy Archives
    Topics: Biology , Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/bi00585a022
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  • 2
    Electronic Resource
    Electronic Resource
    Lateral or along-shore distribution of the polychaetous annelids of an intertidal, sandy habitat (1975)
    Springer
    Marine biology 31 (1975), S. 363-370 
    Details
    ISSN: 1432-1793
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The lateral or along-shore distribution of the polychaetous annelids of a subtropical, sandy, intertidal habitat in Florida (USA) was studied on three transects (covering 2.5 km of shoreline), sampled quarterly for 2 years. Although the average species number and density of individuals were not significantly different at specific tidal levels, the species composition was highly variable over time. Composition of density dominants was identical along-shore, and down-shore density distribution of selected species was also identical. Analysis by entire transects rather than by individual stations decreased along-shore heterogeneity by 10 to 15%.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00392093
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  • 3
    Electronic Resource
    Electronic Resource
    Habitat expansion among polychaetous annelids repopulating a defaunated marine habitat (1976)
    Springer
    Marine biology 37 (1976), S. 169-177 
    Details
    ISSN: 1432-1793
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Repopulation of the polychaete fauna of a defaunated, marine, intertidal habitat was studied for 2 years.Monthly quantitative samples from 4 stations, from just below mean high water to approximately 10 m below mean low water, were analyzed for species composition, density and distributional relationships. Repopulation occurred most rapidly at the highest tide levels, with slower rates of colonization at lower tide levels. Two species, Apoprionospio pygmaea (Hartman) and Magelona pettiboneae Jones, were density dominants for all but the first month of study. These species partitioned the transect spatially, with M. pettiboneae concentrated at the higher tidal levels, and A. pygmaea concentrated at the lower levels. First-year density dominants, Eteone heteropoda Hartman, Gyptis vittata Webster and Benedict, Nereis succinea Frey and Leuckart, and Paraprionospio pinnata (Ehlers), acted opportunistically by arriving early, quickly increasing their populations, and expanding their habitat distributions.Second-year density dominants, Capitita ambiseta Hartman, Minuspio cirrifera (Wirén), and Travisia sp., arrived much later, took longer to significantly increase their densities, and did not show habitat expansion.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00389126
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  • 4
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    The child's spatial conception and geographic education (1978)
    Macomb, Ill., etc. : Periodicals Archive Online (PAO)
    Journal of Geography. 77:1 (1978:Jan.) 24 
    Details
    ISSN: 0022-1341
    Topics: Geography
    URL: http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&res_dat=xri:pao:&rft_dat=xri:pao:article:1129-1978-077-01-000004
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  • 5
    Electronic Resource
    Electronic Resource
    Evidence for domestication of the dog 12,000 years ago in the Natufian of Israel (1978)
    [s.l.] : Nature Publishing Group
    Nature 276 (1978), S. 608-610 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] A domestic animal is one whose breeding is largely controlled by man. Evolution of a domesticated species, therefore, results mainly from artificial selection, with natural selection playing a subsidiary part. The process of domestication implies the separating off of a breeding stock from its wild ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/276608a0
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  • 6
    Electronic Resource
    Electronic Resource
    Rapid hydrogenation of sterols in a contemporary lacustrine sediment (1975)
    [s.l.] : Nature Publishing Group
    Nature 254 (1975), S. 209-211 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] 4-14C-cholesterol (Radiochemical Centre, Amersham) was purified by thin-layer chromatography on silica gel and on silver nitrate impregnated (30% by weight) alumina (Ag+TLC)16, to remove traces of 14C-stanols. Incubations with 4-14C-cholesterol were conducted both in sediment cores from Rostherne ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/254209b0
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  • 7
    Electronic Resource
    Electronic Resource
    Investigations on the flame-retardation of cellulosic fibrous materials (1979)
    Springer
    Journal of thermal analysis and calorimetry 16 (1979), S. 307-320 
    Details
    ISSN: 1572-8943
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Résumé Dans le but de montrer les avantages que présente l'analyse thermique pour l'étude de l'effet des ignifuges sur les substrats cellulosiques, le comportement thermique de la cellulose non traitée (coton) et d'échantillons traités par des ignifuges contenant du phosphore ou de l'azote a été étudié à l'aide d'un Derivatograph et par ATD quantitative. La méthode d'analyse thermique complexe appliquée s'est révélée bien adaptée à l'étude de l'efficacité de l'ignifugation, par comparaison avec les examens effectués en parallèle avec la méthode de l'indice d'oxygène et par dosage de la teneur en phosphore de l'échantillon. Les valeurs de l'efficacité obtenues avec les différentes méthodes sont en corrélation.
    Abstract: Zusammenfassung Das thermische Verhalten unbehandelter Zellulose (Baumwolle) und mit phosphor- und stickstoffhaltigen Imprägniermitteln behandelter Proben wurde mit Hilfe des Derivatographen und der quantitativen DTA untersucht, um die vorteilhaften Eigenschaften der Thermoanalyse bei der Untersuchung der flammensicheren Imprägnierung von Zellulosesubstraten zu zeigen. Die angewandte komplexe thermoanalytische Methode erwies sich zur Untersuchung der Wirksamkeit der Imprägnierung im Paralleleinsatz mit der Sauerstoffindex-Methode und der Bestimmung des Phosphorgehalts der Probe als geeignet. Die mit den verschiedenen Methoden erhaltenen Wirksamkeitswerte stimmten gut überein.
    Notes: Abstract The thermal behaviours of untreated cellulose (cotton) and samples treated with phosphorus and nitrogen-containing flame-retardants have been studied by means of the derivatograph and quantitative DTA, with the aim of revealing the advantageous features of thermal analysis in the investigation of the flame-retardation of cellulose substrates. The complex thermoanalytical method applied proved to be suitable for the investigation of the efficiency of flame-retardation in parallel with the oxygen index method and the determination of the phosphorus content of the sample. The efficiencies obtained with different methods are in correlation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01910693
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  • 8
    Electronic Resource
    Electronic Resource
    Effect of the experimental conditions on the thermooxidative behaviour of vegetable oils (1977)
    Springer
    Journal of thermal analysis and calorimetry 12 (1977), S. 397-405 
    Details
    ISSN: 1572-8943
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Résumé On a étudié l'oxydabilité thermique des huiles de tournesol et de colza, à l'aide d'unDerivatigraph et en utilisant des programmes de température dynamiques et statiques (isothermes). Le but du travail était de trouver les conditions d'expérience les mieux adaptées à l'étude de la résistance à l'oxydation des huiles alimentaires afin de déterminer les conditions de leur stockage. On a mis au point une nouvelle méthode qui indique rapidement la stabilité de l'huile en reproduisant les changements d'oxydation en conditions isothermes.
    Abstract: Zusammenfassung Das thermooxidative Verhalten von Sonnenblumen- und Rapsöl wurde mittels eines Derivatographen unter Einsatz dynamischer und statischer (isothermer) Temperaturprogramme untersucht. Der Zweck der Arbeit war die optimalen Versuchsbedingungen zur Bestimmung der Oxidationsstabilität von Speiseölen zu finden um ihre Lagerfähigkeit zu bestimmen. Eine neue Methode zur schnellen Ermittlung der Stabilität wurde mittels Modellierung der oxidativen Änderungen unter isothermen Bedingungen erarbeitet.
    Notes: Abstract The thermooxidative behaviour of sunflower and rapeseed oils has been investigated by means of a derivatograph, using both dynamic and static (isothermal) temperature programs. The aim was to find the optimum experimental conditions for studying the oxidative stability of edible oils, in order to determine their storability. A novel method has been developed for the rapid indication of stability by modelling the oxidative changes under isothermal conditions.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01909598
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  • 9
    Electronic Resource
    Electronic Resource
    Investigations on the flame-retardation of cellulosic fibrous materials (1979)
    Springer
    Journal of thermal analysis and calorimetry 16 (1979), S. 321-327 
    Details
    ISSN: 1572-8943
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Résumé On a étudié l'effet ignifuge du Pyrovatex CP sur un substrat cellulosique. Etant donné que la lévoglycosane, responsable de l'inflammabilité de la cellulose, se forme par déshydratation, lors du processus principal de décomposition, on a mesuré respectivement les taux de vapeur d'eau dégagés respectivement par les celluloses traitées et non-traitées pendant ce processus. L'eau contenue dans les produits de décomposition obtenus lors des mesures thermiques a été absorbée dans le dioxane puis dosée par une méthode diélectrométrique. Les résultats montrent que la teneur en eau des produits de décomposition de la cellulose non-traitée est beaucoup plus élevée que celle de la cellulose traitée. Un mécanisme réactionnel est proposé à partir de ces résultats.
    Abstract: Zusammenfassung Die flammenhemmende Imprägnierung von Pyrovatex CP wurde an einem Zellulosesubstrat untersucht. Da das für die Entflammbarkeit der Zellulose verantwortliche Levoglycosan sich in dem Hauptzersetzungsvorgang durch Dehydratisierung bildet, wurde die im Laufe dieses Vorganges aus unbehandelter und behandelter Zellulose freigesetzte Wasserdampfmenge gemessen. Der bei den thermischen Messungen erhaltene Wassergehalt der Zersetzungsprodukte wurde in Dioxan absorbiert und durch eine dielektrometrische Methode bestimmt. Die Ergebnisse zeigten, daß der Wassergehalt der Zersetzungsprodukte der unbehandelten Zellulose viel höher ist als jener der behandelten Zellulose. Aufgrund der Ergebnisse wird ein Reaktionsmechanismus vorgeschlagen.
    Notes: Abstract The flame-retardation of Pyrovatex CP on cellulose substrate has been studied. Since levoglycosan, responsible for the fiammability of cellulose, is formed in the main decomposition process by dehydration, the amounts of water vapour released from untreated and treated cellulose during this process were measured. The water contents of the decomposition products obtained in thermal measurements were absorbed in dioxan and determined dielectrometrically. The results show that the water content of the decomposition products of untreated cellulose is much higher than that of treated cellulose. A reaction mechanism is suggested.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01910694
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  • 10
    Electronic Resource
    Electronic Resource
    Novel multiple methods and results in thermal analysis (1976)
    Springer
    Journal of thermal analysis and calorimetry 10 (1976), S. 451-460 
    Details
    ISSN: 1572-8943
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Résumé Mise au point sur le développement des méthodes thermiques associées au cours des trois dernières années et discussion des résultats obtenus.
    Abstract: Zusammenfassung Es wird ein Überblick der vielseitigen thermischen Methoden gegeben und die wesentlichsten in den letzten drei Jahren erzielten Ergebnisse vorgestellt.
    Notes: Abstract The development of the multiple thermal methods and the results obtained with them during the past three years are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01909898
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