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  • 1
    Electronic Resource
    Electronic Resource
    Reversible deuteration of 2,6-dimethoxy-1,4-benzoquinone in alkali (1973)
    s.l. : American Chemical Society
    The @journal of organic chemistry 38 (1973), S. 3226-3227 
    Details
    ISSN: 1520-6904
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/jo00958a034
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  • 2
    Electronic Resource
    Electronic Resource
    Guaiacyl Lignin Associated with Vessels in Aspen Callus Cultures (1974)
    Oxford, UK : Blackwell Publishing Ltd
    Physiologia plantarum 31 (1974), S. 0 
    Details
    ISSN: 1399-3054
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: Lignin from aspen (Populus tremuloides Michx.) tissue cultures containing only mature vessels and undifferentiated parenchymatous cells is exclusively of the guaiacyl type normally associated with gymnosperms. This supports the theory that the guaiacyl and syringyl lignin in angiosperm wood is compartmentalized, with guaiacyl lignin in vessels and syringyl lignin in fibers and ray cells.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1399-3054.1974.tb03118.x
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  • 3
    Electronic Resource
    Electronic Resource
    Indicators of Chemical Pollution from Septic Systems (1990)
    Oxford, UK : Blackwell Publishing Ltd
    Ground water 28 (1990), S. 0 
    Details
    ISSN: 1745-6584
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Geosciences
    Notes: The median-polish statistical method was used to test and quantify chloride (Cl-), electrical conductivity (EC), pH, and fluorescence of laundry detergent optical brighteners as indicators of ground-water pollution from septic systems. The septic systems were located in coarse-textured soils over a high water table close to discharge areas in south-central Wisconsin. Parameters were measured monthly for two years in septic tank effluent samples and in water samples collected downgradient from 17 septic systems and from upgradient background samples. The median-polish technique was excellent for comparing hydrochemical data: Cl- was a conservative tracer and the most suitable indicator of contaminant plumes; EC was semiconservative and EC and pH were only acceptable; and fluorescence was unacceptable. Fluorescence as an optical brightener in septic tank effluents ranged between 0.14 and 0.98 mg/1 with an average value of 0.40 ± 0.16 mg/l. In ground water downgradient from the septic systems, fluorescence levels were within the background levels. Natural substances such as humic and fulvic acids were probably the sources of fluorescence in ground water, not optical brighteners, because optical brighteners did not pass through septic systems drainfields. Fluorescence of naturally occurring compounds in ground water was between 〉0.01 and 260 μ/1 with a mean of ≤51± 14 μ/1 expressed as optical brightener. Nitrification in the soil below the drainfields caused ground-water pH values to decrease within a few meters of the drainfields.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1745-6584.1990.tb01712.x
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  • 4
    Electronic Resource
    Electronic Resource
    Detergent Formula Effect on Transport of Nutrients to Ground Water from Septic Systems (1989)
    Oxford, UK : Blackwell Publishing Ltd
    Ground water 27 (1989), S. 0 
    Details
    ISSN: 1745-6584
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Geosciences
    Notes: Two groups of new septic systems in coarse-textured soils overlying shallow ground water were monitored for two years to determine the potential of contamination of individual ground-water supply from the use of phosphate- built (PO4) or carbonate-built (CO3) detergents. The distribution of nutrients and chloride in the shallow aquifer were examined to trace contamination from the septic systems.The data were evaluated statistically, and a stochastic nutrient transport model was compiled to simulate ground- water contamination by nutrients for a five-county region. The stochastic modeling of the data showed that neither detergent caused delivery of total phosphorus to ground water in concentrations above 0.1 mg/1 as P. However, total nitrogen was removed more efficiently from systems receiving PC4-built than CO3-built detergents. The total nitrogen from septic systems reached the ground water in concentrations of 39 and 69 mg/1 as N from PO4- and CO3-built detergent use, respectively, The detergent formula has a substantial effect on ground-water contamination by nitrogen from septic systems.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1745-6584.1989.tb00442.x
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  • 5
    Electronic Resource
    Electronic Resource
    Buchbesprechungen (1969)
    Springer
    Naturwissenschaften 56 (1969), S. 42-48 
    Details
    ISSN: 1432-1904
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Natural Sciences in General
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00599608
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  • 6
    Electronic Resource
    Electronic Resource
    Elevation of selenium levels in air by xerography (1976)
    [s.l.] : Nature Publishing Group
    Nature 259 (1976), S. 204-205 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Values obtained in replicate runs lay between 20 and 60 ng of selenium (as Se) per m3 of air. The variation in levels may be ascribed to differences in the number of copies made and the non-compliance of users of the machine with a request to keep the door of the room closed during the sampling ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/259204b0
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  • 7
    Electronic Resource
    Electronic Resource
    Syringaldazine, an effective reagent for detecting laccase and peroxidase in fungi (1973)
    Springer
    Cellular and molecular life sciences 29 (1973), S. 381-387 
    Details
    ISSN: 1420-9071
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Zusammenfassung Das Syringaaldehyd-azin ist eine hellgelbe, kristalline und leicht zu synthetisierende Verbindung, die in verdünnter alkoholischer Lösung von Laccase + Luftsauerstoff bzw. von Peroxydase + H2O2 unter Bildung eines intensiv purpurnen Pigments rasch oxydiert wird. Diese hochempfindliche Reaktion ist als Tüpfelprobe leicht anzuwenden und ergibt einen sehr spezifischen Nachweis dieser Phenoloxydasen in Pilzkulturen: Trägt man einige Tropfen verdünnter Azinlösung auf eine Pilzkultur auf, bildet sich an der Luft bei Anwesenheit von Laccase ein purpurner Fleck. Ist nur wenig Laccase vorhanden, wird die Probe nur rosa bis rot; bleibt sie farblos, ist keine Laccase vorhanden. Im letzteren Fall kann man verdünnte H2O2-Lösung an derselben Stelle auftropfen, um Peroxydase nachzuweisen. Färbt sich der Fleck dann lila rot, ist eine Peroxydase vorhanden. Der Nachweis von Peroxydase ist bei Anwesenheit von Laccase nicht möglich. Ist keine Laccase vorhanden, kann man eine Furoguajacin-Lösung (bzw. frisch hergestellte Guajaktinktur) an einer anderen Stelle der Kultur auftragen, um Tyrosinase nachzuweisen. Die Tyrosinase oxydiert das Azin überhaupt nicht. Mit Hilfe dieser eindeutigen und schnellen Nachweismethoden wird man den Zusammenhang zwischen der Bildung der verschiedenen Phenoloxydasen durch holz-zerstörende Pilze und deren Abbau von Holz und von Lignin besser untersuchen können.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01926734
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  • 8
    Electronic Resource
    Electronic Resource
    Production of microbial protein from waste cellulose by Thermomonospora fusca, a thermophilic actinomycete (1973)
    New York, NY [u.a.] : Wiley-Blackwell
    Biotechnology and Bioengineering 15 (1973), S. 833-843 
    Details
    ISSN: 0006-3592
    Keywords: Chemistry ; Biochemistry and Biotechnology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: The growth characteristics of Thermomonospora fusca, a cellulolytic thermophilic actinomycete, are described in terms of growth on pulping fines, a cellulosic waste of the paper industry. A fermentation was developed which substantially degrades this waste, with the residual product of growth containing about 30% microbial protein. This protein, as shown by a preliminary feeding study with baby chicks and by amino acid analyses, appears to be of good nutritional quality and contains no strongly toxic materials. The extracellular cellulolytic enzymes present in the spent broth are discussed in relation to their potential recovery as a by-product of the fermentation, as is also the possible use of the fermentation as a waste disposal system.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/bit.260150502
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  • 9
    Electronic Resource
    Electronic Resource
    Das Vorkommen von Benzylaryläthern im Lignin (1964)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 97 (1964), S. 909-920 
    Details
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Lignin nach Björkman wurde mit Methanol/Chlorwasserstoff und mit wäßrigem Schwefeldioxyd behandelt. Dabei vermehren sich die titrimetrisch ermittelten Phenolgruppen. Entsprechende Versuche wurden ausgeführt mit Modellsubstanzen und den als Zwischenprodukte der Ligninbildung erkannten β-γ-Diaryläthern des Guajacylglycerins. Etwa jede achte bis zehnte Einheit des Coniferenlignins besteht aus Guajacylglycerin, das am γ-Hydroxyl mit Arylgruppen veräthert ist. Die γ-Aryläther entstehen bei der Addition von Phenolen an Chinonmethide und bei der Polymerisation der Chinonmethide.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19640970340
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  • 10
    Electronic Resource
    Electronic Resource
    Die an der Verholzung beteiligten Enzyme. Die Dehydrierung des Sinapinalkohols (1958)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 91 (1958), S. 581-590 
    Details
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Zur Dehydrierung der p-Hydroxy-zimtalkohole in vitro dient ein Enzymgemisch aus Pilzen (Psalliota), in dem Laccase der wichtigste Bestandteil ist. Laccase spielt auch die Hauptrolle bei der Dehydrierung des Coniferylalkohols in der Fichte. Die Anreicherung und Wirkung dieser Enzyme wird beschrieben. Kupfersulfat und Sauerstoff sowie Sauerstoff allein bilden aus p-Hydroxyzimtalkoholen dieselben Dehydrierungsprodukte wie die Enzyme, wenn auch bedeutend langsamer. Sinapinalkohol wird mit hoher Ausbeute zu Syringaresinol dehydriert.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19580910317
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