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  • Wiley-Blackwell  (9,877)
  • 2020-2022  (1)
  • 1950-1954  (9,876)
  • 1
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    Travel Time and Source Variation Explain the Molecular Transformation of Dissolved Organic Matter in an Alpine Stream Network (2020)
    Wiley-Blackwell
    In:  EPIC3JGR Biogeosciences, Wiley-Blackwell, ISSN: 2169-8961
    Details
    Publication Date: 2020-09-21
    Description: Streams and rivers are important components of the carbon cycle as they transport and transform dissolved organic matter (DOM). Using high‐resolution Fourier‐transform ion cyclotron resonance mass spectrometry, we studied the spatial distribution of DOM at the molecular level at more than 100 sites across a stream network during summer and winter baseflow. We developed a model approximating the time DOM spent in the fluvial network, a key constraint on the biogeochemical processing of DOM. Discharge‐weighted travel time explained the compositional changes of DOM, which differed markedly in summer and winter. We attribute these seasonal differences to variation in source material, putatively reflecting the dynamics of freshly produced DOM in summer and DOM with an imprint of leaf litter in winter. Hydrological mixing was an important driver of the spatial dynamics of DOM. From the convergence rate of DOM compound intensities to the network‐wide average, we inferred the spatial distribution of sources within the catchment. Finally, we estimated network‐wide apparent mass transfer coefficients (vf app) of individual DOM compounds, which describe the vertical velocity at which DOM compounds are removed by biotic and abiotic processes. We identified the oxidative state of carbon as an important factor explaining vf app, which we consequently attribute to biological uptake of thermodynamically favorable DOM compounds. This work contributes to our understanding of the spatial processes, temporal constraints, and chemical properties of DOM that regulate the transformation and diagenesis of DOM at the fluvial network scale.
    Repository Name: EPIC Alfred Wegener Institut
    Type: Article , isiRev
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  • 2
    Electronic Resource
    Electronic Resource
    Masthead (1950)
    Weinheim : Wiley-Blackwell
    Chemie Ingenieur Technik - CIT 22 (1950) 
    Details
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cite.330220101
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  • 3
    Electronic Resource
    Electronic Resource
    Lenkungs- und Nachwuchsprobleme der Forschung (1950)
    Weinheim : Wiley-Blackwell
    Chemie Ingenieur Technik - CIT 22 (1950), S. 1-5 
    Details
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cite.330220102
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  • 4
    Electronic Resource
    Electronic Resource
    Verfahrenstechnische Anwendungen der Strahlungserwärmung (1950)
    Weinheim : Wiley-Blackwell
    Chemie Ingenieur Technik - CIT 22 (1950), S. 5-7 
    Details
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Über die technischen Anwendungsmöglichkeiten reiner Strahlungserwärmung bestehen in der Praxis noch vielfach Unklarheiten. Nachstehend behandelte Beispiele aus dem Gebiet der Verfahrenstechnik sollen hierzu Hinweise und Anregungen geben.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cite.330220103
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  • 5
    Electronic Resource
    Electronic Resource
    Versammlungsberichte (1950)
    Weinheim : Wiley-Blackwell
    Chemie Ingenieur Technik - CIT 22 (1950), S. 13-17 
    Details
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Additional Material: 1 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cite.330220106
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  • 6
    Electronic Resource
    Electronic Resource
    Neues Gerät zur inneren Elektrolyse (1950)
    Weinheim : Wiley-Blackwell
    Chemie Ingenieur Technik - CIT 22 (1950), S. 11-12 
    Details
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Zur Metallbestimmung kann man Geräte benutzen, in denen der elektrische Strom innerhalb der Elektrolysierzelle selbst entsteht. Das Verfahren hat gegenüber dem mit von außen zugeführten Strom den Vorteil, daß die Platinanode und die äußere Stromquelle entfallen und die Abscheidung rascher verläuft.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cite.330220105
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  • 7
    Electronic Resource
    Electronic Resource
    Berechnung der relativen Flüchtigkeit aus den Siedetemperaturen zweier reiner Komponenten eines Stoffgemisches (1950)
    Weinheim : Wiley-Blackwell
    Chemie Ingenieur Technik - CIT 22 (1950), S. 8-11 
    Details
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Zur Berechnung der relativen Flüchtigkeit zweier Komponenten eines Gemisches werden einfache Formeln angegeben. Ihre Gültigkeit ist beschränkt auf Gemische aus normalen, ähnlichen Verbindungen im Bereich von 10-800 Torr. So wird die Berechnung von Gleichgewichtskurven normaler Gemische möglich, wie sie sich im Steinkohlenteer finden.
    Additional Material: 1 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cite.330220104
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  • 8
    Electronic Resource
    Electronic Resource
    Umschau (1950)
    Weinheim : Wiley-Blackwell
    Chemie Ingenieur Technik - CIT 22 (1950), S. 18-20 
    Details
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cite.330220107
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  • 9
    Electronic Resource
    Electronic Resource
    Normung (1950)
    Weinheim : Wiley-Blackwell
    Chemie Ingenieur Technik - CIT 22 (1950), S. 20-22 
    Details
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cite.330220108
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  • 10
    Electronic Resource
    Electronic Resource
    Die Grundlagen der Berechnung von Oberflächenwärmeaustauschern. Von H. Kühne. Verlag Vandenhoeck u. Ruprecht, Göttingen. 192 S. m. 12 Tab., 40 Bildern u, 32 ganzseitigen Berechnungstafeln. Brosch. DM 16.80, in Halbleinen geb. DM 18.50 (1950)
    Weinheim : Wiley-Blackwell
    Chemie Ingenieur Technik - CIT 22 (1950), S. 22-22 
    Details
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cite.330220109
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