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  • General Chemistry  (6,129)
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  • 2020-2022  (703)
  • 1990-1994  (6,138)
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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    European journal of nutrition 31 (1992), S. 130-137 
    ISSN: 1436-6215
    Keywords: fattyacids ; subcutaneousfat ; nutrition ; trans fattyacids ; atherosclerosis ; Germany ; Fettsäuren ; subkutanes Fettgewebe ; Ernährung ; trans-Fettsäuren ; Atherosklerose ; Deutschland
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Medicine
    Description / Table of Contents: Zusammenfassung In der vorliegenden Studie wurde die Fettsäurenkomposition des subkutanen Fettgewebes (SCF) von 47 deutschen Erwachsenen analysiert. Es zeigte sich kein Zusammenhang zwischen dem Alter bzw. Geschlecht der Probanden und dem Fettsäurenstatus. Monoene bildeten den Hauptanteil der Fettsäuren (FA) im SCF. Linolsäure war die wichtigste mehrfach ungesättigte Fettsäure. Linolsäuremetaboliten wurden nur in geringen Mengen gefunden. Im Vergleich zu den Ergebnissen von Studien in den USA und den Niederlanden ist die FA-Zusammensetzung des SCF bei deutschen Probanden durch geringere Anteile von Linolsäure und höhere Anteile von Palmitinsäure gekennzeichnet. Der Gehalt an trans-FA entspricht dem, der bei Frauen in den Niederlanden gefunden wurde, er ist jedoch deutlich niedriger als bei amerikanischen Männern. In der Beurteilung der Unterschiede in der Fettsäurenkomposition des SCF in verschiedenen Ländern sollte jedoch berücksichtigt werden, daß die Anteile der wichtigsten FA in allen untersuchten Populationen eine große interindividuelle Schwankungsbreite zeigten.
    Notes: Summary The fatty acid (FA) composition of subcutaneous fat (SCF) was analyzed in 47 German adults. No influences of sex or age on the FA status of the probands could be detected. SCF consisted mainly of monoenoic fatty acids. Linoleic acid was the major polyunsaturated fatty acid. Linoleic acid metabolites were found in small quantities only. In comparison to the results of studies in the USA and the Netherlands the FA composition of SCF in German probands was characterized by lower levels of linoleic acid and higher contents of palmitic acid. The trans-FA content was similar to that in Dutch women, but lower than in American male probands. However, in evaluating the differences in the FA composition of SCF in different countries, it has to be noted that there are wide ranges in the proportions of the major FA in all populations studied.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Vegetation history and archaeobotany 2 (1993), S. 15-28 
    ISSN: 1617-6278
    Keywords: Anthropogenic effects ; Retting ; Charcoal ; Recurrent groups ; England
    Source: Springer Online Journal Archives 1860-2000
    Topics: Archaeology , Biology
    Notes: Abstract The results of pollen analyses from the top 8 m of sediment retrieved from Quidenham Mere, Norfolk, UK are presented. These, together with the results of charcoal analyses and the numerical classification of the pollen and spore taxa into ‘recurrent groups’ using simple discriminant function analysis, are used to reconstruct the vegetation history of the Quidenham Mere catchment over approximately the last 8000 years and to infer anthropogenic effects on the landscape. After some minor woodland clearance in the Bronze Age and further clearance in the Iron Age, it was only in the Anglo-Saxon period that most of the woodland was cleared. Although arable farming was important, it appears that there was also a considerable amount of land used for grazing, with grazed woodland and wood pasture. Towards the top of the sequence, within the past 200 years, there is evidence of the foundation and development of the Quidenham Hall parkland adjacent to the site, with the planting of native and exotic species of trees. A comparison is made between the vegetation histories and anthropogenic effects on the landscapes of Quidenham Mere and Diss Mere, a similar lake about 10 km from Quidenham. Both sites reflect the agricultural practices occurring in their catchments from early times. Exceptionally high values of Cannabaceae grains are indicative of retting of hemp during the past 1500 years. Rarefaction analysis is used to compare the pollen richness of the two sites.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Pharmacy world & science 12 (1990), S. 60-65 
    ISSN: 1573-739X
    Keywords: Aged ; Data collection ; Drug utilization ; England ; Pharmacists ; Physicians
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract A random sample of 805 people aged 65 or more were interviewed in their homes in England about the drugs they were taking, and about their experiences with and views about the way drugs were prescribed. Assessments by a pharmacologist and pharmacists identified inappropriate prescribing and labelling and revealed the extent of elderly people's knowledge of their drugs. Information obtained from general practitioners, with the consent of the elderly people, showed that over a third of the elderly people were taking prescribed drugs of which their physician was unaware, but over four-fifths of the drugs reported by both patients and physicians were thought by both groups to be taken appropriately or as prescribed. The processes and problems of drug utilization and drug prescribing are demonstrated by approaching both patients and physicians and further illuminated by the expertise of pharmacologist and pharmacist.
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  • 4
    ISSN: 1573-5117
    Keywords: England ; rivers ; fish populations ; coenological analysis ; community
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Fish community structure in rivers from 13 drainage basins in Lincolnshire and South Humbersidae, England was investigated. Biomass of 33 fish populations from 233 sites was a subject of coenological analysis using dissimilarity indices. A pattern of fish community interactions has been revealed and related to longitudinal changes and basic habitat information. The coenological analysis has given essential contribution to the knowledge of the biology of investigated species and provided practical information for stocking coarse species.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für die chemische Industrie 102 (1990), S. 1-20 
    ISSN: 0044-8249
    Keywords: Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Ein neues Anwendungsgebiet der NMR-Spektroskopie, neben der Aufklärung von Molekülstrukturen und dem Studium biochemischer Prozesse und morphologischer Phänomene (als NMR-Tomographie), eröffnet die NMR-Mikroskopie. Sie eignet sich als bildgebendes Verfahren sowohl für die Untersuchung biologischer Objekte wie Pflanzen und Kleintiere als auch für die Beobachtung mikroskopischer Strukturen und Strukturänderungen in Polymeren und keramischen Materialien. Die NMR-Mikroskopie kann auch als volumenselektive Spektroskopie, mit der die NMR-spezifischen Parameter - Spindichte ϱ, chemische Verschiebung δ, Relaxationszeiten T1 und T2 - ortsaufgelöst quantitativ bestimmt werden können, betrieben werden. Die vielen inzwischen sehr gut entwickelten Meßmethoden ermöglichen durch sehr schnelle Bildgebung das Studium dynamischer Prozesse im Millisekundenbereich, so daß nicht nur bei sich bewegenden Objekten das Objekt artefaktfrei abgebildet, sondern auch die Diffusionskonstanten isotroper wie anisotroper Diffusion bestimmt werden können - bei letzterer im Prinzip sogar der komplette Diffusionstensor. Die ortsaufgelöste Bestimmung der Relaxationszeiten liefert Informationen über molekulare Beweglichkeiten und Bindungsverhältnisse, z. B. die Bindung von Wasser oder anderen Lösungsmitteln an Polymere, die Beweglichkeit von Flüssigkeiten in Polymeren oder keramischen Materialien oder die dreidimensionale Form von Poren in porösen Werkstoffen. Im biologisch-medizinischen Bereich ermöglicht die NMR-Mikroskopie die Beobachtung von Wachstumsprozessen auf der Zellebene, embryologische Studien, die Entwicklung therapeutischer Konzepte im Tierversuch unter oft drastischer Reduktion der Zahl der Tierversuche und, als volumenselektive Spektroskopie durchgeführt, das Studium des Energiestoffwechsels in vivo.
    Additional Material: 32 Ill.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für die chemische Industrie 102 (1990), S. 64-65 
    ISSN: 0044-8249
    Keywords: Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
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  • 7
    ISSN: 0044-8249
    Keywords: Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 8
    ISSN: 0044-8249
    Keywords: 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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  • 9
    ISSN: 0044-8249
    Keywords: Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 10
    ISSN: 0044-8249
    Keywords: 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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