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  • 1
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    Integrative Research on Organic Matter Cycling Across Aquatic Gradients (2017)
    Lausanne : Frontiers
    Details
    Keywords: Marine Biogeochemistry ; Carbon ; organic matter ; river ; estuarine ; marine ; atmosphere ; dynamics ; ecosystem ; interface ; transition
    Description / Table of Contents: Editorial: Integrative Research on Organic Matter Cycling across Aquatic Gradients / Nicholas D. Ward. doi: 10.3389/fmars.2017.00131 --- Influence of Major Storm Events on the Quantity and Composition of Particulate Organic Matter and the Phytoplankton Community in a Subtropical Estuary, Texas / Nicolas E. Reyna, Amber K. Hardison and Zhanfei Liu. doi: 10.3389/fmars.2017.00043 --- The Fate of Carbon in Sediments of the Xingu and Tapajós Clearwater Rivers, Eastern Amazon / Dailson J. Bertassoli, André O. Sawakuchi, Henrique O. Sawakuchi, Fabiano N. Pupim, Gelvam A. Hartmann, Michael M. McGlue, Cristiano M. Chiessi, Matthias Zabel, Enno Schefuß, Tatiana S. Pereira, Rudney A. Santos, Samantha B. Faustino, Paulo E. Oliveira and Denise C. Bicudo. doi: 10.3389/fmars.2017.00044 --- Flux of Dissolved and Particulate Low-Temperature Pyrogenic Carbon from Two High-Latitude Rivers across the Spring Freshet Hydrograph / Allison N. Myers-Pigg, Patrick Louchouarn and Roman Teisserenc. doi: 10.3389/fmars.2017.00038 --- Environmental Drivers of Dissolved Organic Matter Molecular Composition in the Delaware Estuary / Helena Osterholz, David L. Kirchman, Jutta Niggemann and Thorsten Dittmar. doi: 10.3389/feart.2016.00095 --- Molecular and Optical Properties of Tree-Derived Dissolved Organic Matter in Throughfall and Stemflow from Live Oaks and Eastern Red Cedar / Aron Stubbins, Leticia M. Silva, Thorsten Dittmar and John T. Van Stan. doi: 10.3389/feart.2017.00022 --- Composition and Transformation of Dissolved Organic Matter in the Baltic Sea / Michael Seidel, Marcus Manecki, Daniel P. R. Herlemann, Barbara Deutsch, Detlef Schulz-Bull, Klaus Jürgens and Thorsten Dittmar. doi: 10.3389/feart.2017.00031 --- Evaluation of Primary Production in the Lower Amazon River Based on a Dissolved Oxygen Stable Isotopic Mass Balance / William C. Gagne-Maynard, Nicholas D. Ward, Richard G. Keil, Henrique O. Sawakuchi, Alan C. Da Cunha, Vania Neu, Daimio C. Brito, Diani F. Da Silva Less, Joel E. M. Diniz, Aline De Matos Valerio, Milton Kampel, Alex V. Krusche and Jeffrey E. Richey. doi: 10.3389/fmars.2017.00026 --- Surface Gradients in Dissolved Organic Matter Absorption and Fluorescence Properties along the New Zealand Sector of the Southern Ocean / Eurico J. D'Sa and Hyun-cheol Kim. doi: 10.3389/fmars.2017.00021 --- The Genesis and Exodus of Vascular Plant DOM from an Oak Woodland Landscape / Peter J. Hernes, Robert G. M. Spencer, Rachael Y. Dyda, Anthony T. O'Geen and Randy A. Dahlgren. doi: 10.3389/feart.2017.00009 --- Carbon Dioxide Emissions along the Lower Amazon River / Henrique O. Sawakuchi, Vania Neu, Nicholas D. Ward, Maria de Lourdes C. Barros, Aline M. Valerio, William Gagne-Maynard, Alan C. Cunha, Diani F. S. Less, Joel E. M. Diniz, Daimio C. Brito, Alex V. Krusche and Jeffrey E. Richey. doi: 10.3389/fmars.2017.00076 --- Short-Term Dissolved Organic Carbon Dynamics Reflect Tidal, Water Management, and Precipitation Patterns in a Subtropical Estuary / Peter Regier and Rudolf Jaffé. doi: 10.3389/fmars.2016.00250 --- Impact of Wetland Decline on Decreasing Dissolved Organic Carbon Concentrations along the Mississippi River Continuum / Shuiwang Duan, Yuxiang He, Sujay S. Kaushal, Thomas S. Bianchi, Nicholas D. Ward and Laodong Guo. doi: 10.3389/fmars.2016.00280 --- Microbially-Mediated Transformations of Estuarine Dissolved Organic Matter / Patricia M. Medeiros, Michael Seidel, Scott M. Gifford, Ford Ballantyne, Thorsten Dittmar, William B. Whitman and Mary Ann Moran. doi: 10.3389/fmars.2017.00069 --- Dissolved Organic and Inorganic Carbon Flow Paths in an Amazonian Transitional Forest / Vania Neu, Nicholas D. Ward, Alex V. Krusche and Christopher Neill. doi: 10.3389/fmars.2016.00114
    Pages: Online-Ressource (201 Seiten)
    ISBN: 9782889452125
    URL: https://doi.org/10.3389/978-2-88945-212-5
    Language: English
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  • 2
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    Changes of dissolved organic matter compositions in artifical and natural seawater during Pseudovibrio growth experiment (2015)
    PANGAEA
    In:  Supplement to: Schwedt, Anne; Seidel, Michael; Dittmar, Thorsten; Simon, Meinhard; Bondarev, Vladimir N; Romano, Stefano; Lavik, Gaute; Schulz-Vogt, Heide N (2015): Substrate use of Pseudovibrio sp. growing in ultra-oligotrophic seawater. PLoS ONE, 10(3), e0121675, https://doi.org/10.1371/journal.pone.0121675
    Details
    Publication Date: 2023-09-07
    Description: Marine planktonic bacteria often live in habitats with extremely low concentrations of dissolved organic matter (DOM). To study the use of trace amounts of DOM by the facultatively oligotrophic Pseudovibrio sp. FO-BEG1, we investigated the composition of artificial and natural seawater before and after growth. We determined the concentrations of dissolved organic carbon (DOC), total dissolved nitrogen (TDN), free and hydrolysable amino acids, and the molecular composition of DOM by electrospray ionization Fourier transform ion cyclotron resonance mass spectrometry (ESI FT-ICR-MS). The DOC concentration of the artificial seawater we used for cultivation was 4.4 µmol C/l, which was eight times lower compared to the natural oligotrophic seawater we used for parallel experiments (36 µmol C/l). During the three-week duration of the experiment, cell numbers increased from 40 cells/ml to 2x10**4 cells/ml in artificial and to 3x10**5 cells/ml in natural seawater. No nitrogen fixation and minor CO2 fixation (〈 1% of cellular carbon) was observed. Our data show that in both media, amino acids were not the main substrate for growth. Instead, FT-ICR-MS analysis revealed usage of a variety of different dissolved organic molecules, belonging to a wide range of chemical compound groups, also containing nitrogen. The present study shows that marine heterotrophic bacteria are able to proliferate with even lower DOC concentrations than available in natural ultra-oligotrophic seawater, using unexpected organic compounds to fuel their energy, carbon and nitrogen requirements.
    Keywords: Elemental nitrogen oxidation A new bacterial process in the nitrogen cycle; ELNOX; Event label; EXP; Experiment; Fourier transform ion cyclotron resonance mass spectrometry (FT-ICR-MS); Hydrogen/Carbon ratio; Mass-to-charge ratio; Molecular formula; Oxygen/Carbon ratio; Peak intensity; Pseudovibrio_ASW_EXP; Pseudovibrio_SW_EXP; Standard deviation; Treatment
    Type: Dataset
    Format: text/tab-separated-values, 9716 data points
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    DATA PANGAEA
  • 3
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    Methodische Produktplanung. Grundlagen, Systematik und Anwendung im Produktentstehungsprozess (2021)
    KIT Scientific Publishing
    Details
    Publication Date: 2024-04-09
    Keywords: T1-995 ; Innovation ; Innovationsprozess ; Methode ; Produktplanung ; Produktentwicklung ; Innovationsmanagement ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TB Technology: general issues
    Language: German
    Format: image/jpeg
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  • 4
    Electronic Resource
    Electronic Resource
    The Peracetic Acid Oxidation of Dehydronorcamphor (1958)
    s.l. : American Chemical Society
    Journal of the American Chemical Society 80 (1958), S. 6303-6305 
    Details
    ISSN: 1520-5126
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ja01556a035
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  • 5
    Electronic Resource
    Electronic Resource
    Communications: The Formation of Nitrile Imines in the Thermal Breakdown of 2,5-Disubstituted Tetrazoles (1959)
    s.l. : American Chemical Society
    The @journal of organic chemistry 24 (1959), S. 892-893 
    Details
    ISSN: 1520-6904
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/jo01088a034
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  • 6
    Electronic Resource
    Electronic Resource
    Reaction of substituted 2-carbethoxyacetylaminopyridines and similar compounds with triethyl orthoformate and zinc chloride (1970)
    s.l. : American Chemical Society
    The @journal of organic chemistry 35 (1970), S. 1662-1664 
    Details
    ISSN: 1520-6904
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/jo00830a086
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  • 7
    Electronic Resource
    Electronic Resource
    Reactions of 2-acetoacetylamine pyridines with triethylorthoformate and zinc chloride (1970)
    s.l. : American Chemical Society
    The @journal of organic chemistry 35 (1970), S. 1475-1480 
    Details
    ISSN: 1520-6904
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/jo00830a047
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  • 8
    Electronic Resource
    Electronic Resource
    Preparation and reactions of some 2-oxo-2H-pyrido[1,2-a]pyrimidines (1972)
    s.l. : American Chemical Society
    The @journal of organic chemistry 37 (1972), S. 600-603 
    Details
    ISSN: 1520-6904
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/jo00969a018
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  • 9
    Electronic Resource
    Electronic Resource
    Synthesis of N-alkyl-3-carboxy-4-pyridones (1972)
    s.l. : American Chemical Society
    The @journal of organic chemistry 37 (1972), S. 1145-1148 
    Details
    ISSN: 1520-6904
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/jo00973a016
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  • 10
    Electronic Resource
    Electronic Resource
    1.3-Dipolare Additionen, II. Synthese von 1.2.4-Triazolen aus Nitriliminen und NitrilenRudolf Criegee in freundschaftlicher Ergebenheit zum 60. Geburtstag gewidmet (1962)
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 653 (1962), S. 105-113 
    Details
    ISSN: 0075-4617
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Das aus Benz-phenylhydrazid-chlorid mit Triäthylamin oder durch Thermolyse des 2.5-Diphenyl-tetrazols freigesetzte Diphenylnitrilimin geht in situ 1.3-dipolare Additionen mit Nitrilen ein, die zu 1.3.5-trisubstituierten 1.2.4-Triazolen führen. Auch andere Nitrilimine reagieren unter Cycloaddition, womit die 1.2.4-Triazol-Synthese Variationsbreite erhält.
    Additional Material: 2 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jlac.19626530113
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