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  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Chemie Ingenieur Technik - CIT 60 (1988), S. 519-525 
    ISSN: 0009-286X
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Logistics in the manufacture of chemical products. This survery covers the fields of location analysis, organization of operational material flow, and materials management, all of which are interlocked with each other. Logistics problems with location analysis lie in the area of infrastructure, procurement, and distribution. The organization of the operational material flow has to be based on a closed concept, taking simultanously into consideration interests of production techniques and of logistics. Special attention has to be paid to the reciprocal effect of plant and storage capacity. With complex production structures simulation models should be used, including a statistical model of the market demands, systematic variation of material flows, and grouping of technical equipment. Target is a minimization of total cost. For market oriented operation of complex productions, integrated materials management systems have to be employed. The systems supply a transparent material flow starting from the market demands via the control of production up to the procurement of raw materials.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 0003-3146
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Description / Table of Contents: The size of the crystalline regions of regenerated cellulosic fibers was determined by means of transmission electron microscopy, small angle X-ray scattering, and wide angle X-ray diffraction. All three methods lead in satisfying conformity to the following dimensions: length: 120-140 Å, width: 80-100 Å, thickness: 30-40 Å. The broad plane of the platelet shaped crystallites is situated parallel to the 101-lattice plane, the small edge plane has an orientation parallel to the 101-lattice plane. The -crystallites form strands, which have a length of 1500-5500 Å. They are partly bundled up to clusters with a diameter of 300-600 Å, partly separated by less dense spacings. The distance between the crystalline regions amounts to 20-40 Å in longitudinal and cross direction.
    Notes: Die Dimensionen der kristallinen Bereiche von Regeneratcellulosefasern wurden mittels Transmissionselektronenmikroskopie, Röntgenkleinwinkelstreuung und Röntgenweitwinkeldiffraktion bestimmt. In befriedigender Übereinstimmung wurden nach allen drei Methoden folgende Abmessungen gefunden: Länge: 120-140 Å, Breite: 80-100 Å, Dicke: 30-40 Å. Die breite Ebene der blättchenförmigen Kristallite verläuft parallel zur 101-Netzebene, die schmale Kantenebene parallel zur 101-Netzebene. Die Kristallite bilden Ketten mit einer Länge von 1500 bis 5500 Å, die teilweise zu Clustern mit einem Durchmesser von 300 bis 600 Å gebündelt sind, teilweise durch Zonen geringerer Dichte voneinander getrennt sind. Die Abstände zwischen den kristallinen Bereichen betragen in Längs- und Querrichtung 20 bis 40 Å.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
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  • 3
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    In:  (Professorial dissertation), Christian-Albrechts-Universität zu Kiel, Kiel, Germany, 144, [18] pp
    Publication Date: 2021-02-10
    Type: Thesis , NonPeerReviewed
    Format: text
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  • 4
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    Institut für Meereskunde
    In:  Berichte aus dem Institut für Meereskunde an der Christian-Albrechts-Universität Kiel, 174 . Institut für Meereskunde, Kiel, Germany, 137 pp.
    Publication Date: 2014-10-14
    Type: Report , NonPeerReviewed
    Format: text
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  • 5
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    Institut für Meereskunde
    In:  Berichte aus dem Institut für Meereskunde an der Christian-Albrechts-Universität Kiel, 140 . Institut für Meereskunde, Kiel, Germany, 105 pp.
    Publication Date: 2016-04-18
    Type: Report , NonPeerReviewed
    Format: text
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  • 6
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    Institut für Meereskunde
    In:  Berichte aus dem Institut für Meereskunde an der Christian-Albrechts-Universität Kiel, 180 . Institut für Meereskunde, Kiel, Germany, 200 pp.
    Publication Date: 2014-10-14
    Type: Report , NonPeerReviewed
    Format: text
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  • 7
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    Institut für Polarökologie Kiel
    In:  Mitteilungen zur Kieler Polarforschung (2). pp. 45-51.
    Publication Date: 2017-07-25
    Description: Auf der Basis wirtschaftlicher und politischer Interessen haben ähnlich wie in der Antarktis auch in der Arktis die Forschungsaktivitäten in den letzten 10 Jahren sehr stark zugenommen. Im Vordergrund stehen die Prospektion und Ausbeutung von fossilen Brennstoffen, vor allem von Öl, aber auch der Ausbau der militärischen Sicherheit. Denn in der Arktis stehen sich die beiden großen Machtblöcke, USA und Sowjetunion, am nächsten gegenüber. Man hat wohl auch bald erkannt, daß die sogenannte angewandte Forschung in diesem nur unzureichend bekannten Terrain einer massiven Unterstützung durch die Grundlagenforschung bedurfte.
    Type: Article , NonPeerReviewed
    Format: text
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  • 8
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    Institut für Polarökologie Kiel
    In:  Mitteilungen zur Kieler Polarforschung, 4 . pp. 11-13.
    Publication Date: 2017-09-11
    Description: Kurzfassung eines Vortrages zum Polartag in Bremerhaven am 23.2.1988
    Type: Article , NonPeerReviewed
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  • 9
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    Institut für Meereskunde
    Publication Date: 2022-05-02
    Type: Article , NonPeerReviewed
    Format: text
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  • 10
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    Institut für Meereskunde
    Publication Date: 2022-05-03
    Description: Die Sestonbestimmung hat den Vorteil, eine einfache, vielseitig anwendbare Methode in der biologischen Meereskunde zu sein. Ihre Genauigkeit hängt in erster Linie von der Beschaffenheit des Filtermaterials, der Größe der Filter und den Wägebedingungen ab. In diesem Zusammenhang werden drei Filtersorten miteinander verglichen: Papierfilter (Schleicher & Schüll 575), Sartorius-Membranfilter (SM 11304) und Glasfaserfilter (Whatman GF/C). Die Glasfaserfilter wurden hierbei, soweit bekannt, zum ersten Mal für die Sestonbestimmung benutzt. In der Filtrationsleistung sind sie den Membranfiltern vergleichbar. Aus voneinander unabhängigen Doppelbestimmungen wird die Standardabweichung der Methode bei der Verwendung der verschiedenen Filtersorten ermittelt. Die größte Genauigkeit erreichten Whatman-Glasfaserfilter (⌀ 2,5 cm) mit ± 0,15 mg auf der 95% Wahrscheinlichkeitsebene. Zum Schluß wird eine neue Filtationsapparatur beschrieben und eine ausführliche Arbeitsvorschrift gegeben. Seston determination has the advantage of being a simple method with a wide range of application in biological oceanography. Its accuracy depends mainly on the quality of the filter material, the size of the filters and the weighing conditions. Under these aspects three filter types are compared: paper filters (Schleicher& Schüll 575), Sartorius membrane filters (SM 11304) and glassfibre filters (Whatman GF/C). The glassfibre filters have been used here, as far as is known, for the first time for seston determination. Their filtration efficiency is comparable to that of the membrane filters. By means of independent double determinations the standard deviation of the method shown by the three filter types tested is calculated. The highest accuracy was attained by Whatman glassfibre filters (⌀ 2.5 cm) with ± 0.15 mg on the 95% probability level. Finally, a new filtration apparatus is described and detailed directions for determining seston given.
    Type: Article , NonPeerReviewed
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