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  • Articles  (5)
  • 1990-1994  (4)
  • 1970-1974  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Hepatocellular metabolic change after orthotopic liver transplantation in rats (1991)
    Springer
    Surgery today 21 (1991), S. 57-62 
    Details
    ISSN: 1436-2813
    Keywords: orthotopic liver transplantation ; hepatic metabolism
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract The hepatocellular metabolic change after liver transplantation following 2 hr cold ischemia was investigated. Of 55 orthotopic liver transplantations in male Wistar rats, 47 animals were sacrificed at 3 hr, and 1, 2, 7 and 30 days to determine hepatic metabolite levels, in the form of adenine nucleotides, lactate and glycogen. Using the other 8 recipients, biochemical examinations were done at 1, 3, 5, 7, 30 and 60 days and metabolic levels estimated at 60 days. The SGOT and SGPT levels decreased gradually after a remarkable increase on the first postoperative day, while the alkaline phosphatase level revealed a peak value at 30 days. All levels recovered to within the normal range in 60 days. The total adenine nucleotide level reached the normal range within 3 hr following the blood reflow and remained at a normal level thereafter. However, all the metabolic levels apart from total adenine nucleotides deteriorated to reach their worst level at 7 days. The results of this investigation indicate that the posttransplanted deterioration of metabolic levels were possibly caused by the imperfect oxygenation due to cellular edema after blood reflow. However, the levels of these metabolites recovered within 60 days after transplantation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02470867
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  • 2
    Electronic Resource
    Electronic Resource
    Sulphur- and nitrogen-containing volatile components of kohlrabi (Brassica oleracea var.gongylodes L.) (1992)
    Springer
    European food research and technology 194 (1992), S. 259-262 
    Details
    ISSN: 1438-2385
    Source: Springer Online Journal Archives 1860-2000
    Topics: Process Engineering, Biotechnology, Nutrition Technology
    Description / Table of Contents: Summary Volatiles from the edible part of kohlrabi (Brassica oleracea var.gongylodes) were isolated by means of a dynamic headspace sampling device and separated by capillary gas chromatography. For identification samples were subjected to element-specific detection (Flame photometric and nitrogen-phosphorus detectors) and mass spectral analyses. Major volatile products are: 3-methylthiopropyl, 4-methylthiobutyl and allyl isothiocyanate. The two corresponding organic cyanides 3-methylthiopropyl and 4-methylthiobutyl cyanides and dimethyl, trimethyl and tetramethyl disulphides are also present in higher amounts.n-Nonenal, (E)-2-hexenal, (E,E)-2,4-heptadienal and some isothiocyanates of unknown structure appear in the volatile fraction as minor constituents. The sulphur- and nitrogen-containing components could be related to the enzymic cleavage (myrosinase) of glucosinolates, naturally occurring precursors in brassica plants. Some of the volatile products possess antimicrobial and antithyroid effects and have been identified in different plants of the cruciferae family. The possible role of the isothiocyanates, cyanides, sulphides and aldehydes to the flavour of kohlrabi is discussed.
    Notes: Zusammenfassung Die flüchtigen Inhaltsstoffe des Kohlrabi (Brassica oleracea var.gongylodes L.) wurden mittels der dynamischen Kopfraum-Technik isoliert und anschligßend gaschromatographisch aufgetrennt. Unter Anwendung elementspezifischer Detektoren (FPD, NPD) und Massenspektrometrie erfolgte deren Identifizierung. Zu den Hauptkomponenten gehören: 3-Methylthiopropyl-,4-Methylthiobutyl- und Allyrisothiocyanat. Die beiden korrespondierenden organischen Cyanide 3-Methylthiopropyl- und 4-Methylthiobutyl-cyanid sowie Dimethyldisulfid, Dimethyltrisulfid und Dimethyl-tetrasulfid erscheinen ebenfalls in gröσBeren Mengen. In geringerer Konzentration treten nochn-Nonenal, (E)-2-Hexenal, (E,E)-2,4-Heptadienal und einige Isothiocyanate unbekannter Struktur in den Extrakten auf. Die schwefel- und stickstoffhaltigen Komponenten sind auf die enzymatische Spaltung (Myrosinase) der inBrassica-Arten vorhandenen Glucosinolate zurückzuführen. Einige der identifizierten Stoffe zeigen antimikrobielle und antithyroide Eigenschaften und wurden in verschiedenen Cruziferenarten nachgewiesen. Die mögliche Bedeutung der Isothiocyanate, Cyanide, Sulfide und Aldehyde für das Kohlrabiaroma wird diskutiert.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01198418
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  • 3
    Electronic Resource
    Electronic Resource
    PCR cloning and expression analysis of cDNAs encoding cysteine proteinases from germinating seeds of Vicia sativa L. (1994)
    Springer
    Plant molecular biology 26 (1994), S. 1207-1212 
    Details
    ISSN: 1573-5028
    Keywords: cysteine proteinase ; cDNA ; Vicia sativa L.
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract cDNA clones encoding cysteine proteinases from cotyledons of germinated seeds of Vicia sativa L. have been obtained by means of PCR. Degenerate oligonucleotide primers were designed according to conserved amino acid regions of known cysteine proteinases. The deduced amino acid sequences of the cDNA clones encoding VSCYSPR1 and VSCYSPR2 display strong homology to cysteine proteinases of the so called papain superfamily. Northern analyses revealed developmentally regulated expression of both the mRNAs in germinating seeds. The transcripts were shown to be products of two distinct single genes, each exhibiting structural polymorphisms as exposed in few nucleotide substitutions.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00040701
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  • 4
    Electronic Resource
    Electronic Resource
    Correction of aerosol influence in Landsat 5 Thematic Mapper data (1994)
    Springer
    GeoJournal 32 (1994), S. 61-70 
    Details
    ISSN: 1572-9893
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geography
    Notes: Abstract The influence of aerosols in the visible and near infrared part of the electromagnetic spectrum was studied by simulations of Landsat 5 Thematic Mapper measurements. The radiative transfer model used is based on the matrix-operator-method and was applied to different surface types, represented by specific spectral albedo values. On the basis of a single scattering approach for atmospheric correction, an algorithm was developed to correct for the influences of aerosols, air molecules and athmospheric trace gases on Thematic Mapper measurements above land surfaces using additional measurements above nearby located ocean surfaces to estimate the optical properties. The optical thickness of a cloud-free atmosphere has therefore been varied in the model for different aerosol types and surface reflectances.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00806358
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  • 5
    Electronic Resource
    Electronic Resource
    Zur Umsetzung von Phosphor-Tetrachlorkohlenstoff-Suspensionen mit Sauerstoff (1970)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 378 (1970), S. 37-48 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Colourless phosphorus is volatile with CCl4 vapour. In the presence of oxygen, phosphorus vapour in gaseous CCl4 is only oxidised to a negligible extent. Quenching of phosphorus/CCl4 vapour mixture results in the formation of conglomerates of colourless phosphorus having molar masses up to 8200 (≙ 66 P4 molecules). Such conglomerates are oxidised by oxygen. The oxidation products exhibit an atomic ration P : 0 ≍ 2 : 3 being, however, no polymeric forms of P4O6 (as supposed by BLASER), but probably polymeric cross  -  linked mixed oxides with a statistical oxygen distribution.
    Notes: Farbloser Phosphor ist mit Tetrachlorkohlenstoff dampfflüchtig. Mit Sauerstoff erfolgt in Gegenwart von Tetrachlorkohlenstoffdampf nur eine unwesentliche Oxydation des Phosphordampfes. Beim Abschrecken des Dampfgemisches bilden sich Konglomerate von farblosem Phosphor entsprechend mittleren Teilchengewichten bis zu 8200. Solche Konglomerate werden durch Sauerstoff oxydiert, Die Oxydationsprodukte zeigen ein Phosphor-Sauerstoffverhältnis von ca. 2 : 3. Sie sind nicht, wie BLASER annahm, Polymere des Phosphor(III)-oxid, P4O6, sondern stellen wahrscheinlich polymere, vernetzte Mischoxide mit statistischer Sauerstoffverteilung dar.
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19703780105
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