Search Results - (Author, Cooperation:W. Hagen)

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  1. 1
    Staff View
    Publication Date:
    2015-09-30
    Publisher:
    Nature Publishing Group (NPG)
    Print ISSN:
    0028-0836
    Electronic ISSN:
    1476-4687
    Topics:
    Biology
    Chemistry and Pharmacology
    Medicine
    Natural Sciences in General
    Physics
    Keywords:
    Binding Sites ; *Cryoelectron Microscopy ; HeLa Cells ; Humans ; Mass Spectrometry ; Models, Molecular ; Molecular Chaperones/chemistry/metabolism/ultrastructure ; Nuclear Envelope/metabolism ; Nuclear Pore/*chemistry/metabolism/*ultrastructure ; Nuclear Pore Complex Proteins/*chemistry/metabolism/*ultrastructure ; Protein Conformation ; Protein Multimerization ; Protein Stability
    Published by:
    Latest Papers from Table of Contents or Articles in Press
  2. 2
  3. 3
  4. 4
    Queisser, H.J. ; Hartmann, W. ; Hagen, W.

    Amsterdam : Elsevier
    Staff View
    ISSN:
    0022-0248
    Source:
    Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics:
    Chemistry and Pharmacology
    Geosciences
    Physics
    Type of Medium:
    Electronic Resource
    URL:
    Articles: DFG German National Licenses
  5. 5
    Bauser, E. ; Hagen, W.

    Amsterdam : Elsevier
    Staff View
    ISSN:
    0022-0248
    Source:
    Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics:
    Chemistry and Pharmacology
    Geosciences
    Physics
    Type of Medium:
    Electronic Resource
    URL:
    Articles: DFG German National Licenses
  6. 6
    Graeve, M. ; Kattner, G. ; Hagen, W.

    Amsterdam : Elsevier
    Staff View
    ISSN:
    0022-0981
    Keywords:
    Alcohol ; Arctic ; Copepod ; Fatty acid ; Feeding ; Lipid ; Trophic marker
    Source:
    Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics:
    Biology
    Type of Medium:
    Electronic Resource
    URL:
    Articles: DFG German National Licenses
  7. 7
    Hagen, W.

    Amsterdam : Elsevier
    Staff View
    ISSN:
    0022-0248
    Source:
    Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics:
    Chemistry and Pharmacology
    Geosciences
    Physics
    Type of Medium:
    Electronic Resource
    URL:
    Articles: DFG German National Licenses
  8. 8
    Staff View
    ISSN:
    0022-2860
    Source:
    Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics:
    Chemistry and Pharmacology
    Physics
    Type of Medium:
    Electronic Resource
    URL:
    Articles: DFG German National Licenses
  9. 9
    Hagen, W. ; Tielens, A.G.G.M.

    Amsterdam : Elsevier
    Staff View
    ISSN:
    0584-8539
    Source:
    Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics:
    Chemistry and Pharmacology
    Physics
    Type of Medium:
    Electronic Resource
    URL:
    Articles: DFG German National Licenses
  10. 10
    Hagen, W. ; Tielens, A.G.G.M.

    Amsterdam : Elsevier
    Staff View
    ISSN:
    0584-8539
    Source:
    Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics:
    Chemistry and Pharmacology
    Physics
    Type of Medium:
    Electronic Resource
    URL:
    Articles: DFG German National Licenses
  11. 11
    Hagen, W. ; Tielens, A.G.G.M. ; Greenberg, J.M.

    Amsterdam : Elsevier
    Staff View
    ISSN:
    0301-0104
    Source:
    Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics:
    Chemistry and Pharmacology
    Physics
    Type of Medium:
    Electronic Resource
    URL:
    Articles: DFG German National Licenses
  12. 12
    Lipshutz, B.H. ; Fatheree, P. ; Hagen, W. ; Stevens, K.L.

    Amsterdam : Elsevier
    Staff View
    ISSN:
    0040-4039
    Source:
    Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics:
    Chemistry and Pharmacology
    Type of Medium:
    Electronic Resource
    URL:
    Articles: DFG German National Licenses
  13. 13
    Lipshutz, B.H. ; Huff, B. ; Hagen, W.

    Amsterdam : Elsevier
    Staff View
    ISSN:
    0040-4039
    Source:
    Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics:
    Chemistry and Pharmacology
    Type of Medium:
    Electronic Resource
    URL:
    Articles: DFG German National Licenses
  14. 14
    Faubel, A. ; Bulnheim, H. -P. ; Hagen, W. ; Greve, Wulf
    Springer
    Published 1991
    Staff View
    ISSN:
    1438-3888
    Source:
    Springer Online Journal Archives 1860-2000
    Topics:
    Biology
    Type of Medium:
    Electronic Resource
    URL:
    Articles: DFG German National Licenses
  15. 15
    Hagen, W. ; Allamandola, L. J. ; Greenberg, J. M.
    Springer
    Published 1979
    Staff View
    ISSN:
    1572-946X
    Source:
    Springer Online Journal Archives 1860-2000
    Topics:
    Physics
    Notes:
    Abstract Laboratory and theoretical studies have been made of the effects of ultraviolet photolysis of interstellar grain mantles which consist of combinations of hydrogen, oxygen, carbon and nitrogen — ‘dirty ice’. It is shown that processes involving photolysis (photoprocessing) of interstellar grains are important during most of their lifetime even including the time they spend in dense clouds. A laboratory designed to simulate the interstellar conditions is described. This is the first time such a laboratory has been able to provide results which may be directly scaled to the astrophysical situations involving interstellar grains and their environment. The evolution of grain analogs is followed by observing the infrared absorption spectra of photolyzed samples of ices deposited at 10 K. The creation and storage of radicals and the production of molecules occur as a result of reactions within the solid. A large number of molecules and radicals observed in the interstellar gas appear in the irradiated ices. Energy released during warm-up is seen from visible luminescence and inferred from vapor pressure enhancement which occurs during warming of photolyzed samples relative to unphotolyzed samples. The evolution of a grain and its role as a source as well as a sink of molecules is pictured as a statistical process within dense clouds. The gradual accretion on and photolysis of an individual grain provides the stored chemical energy the release of which is sporadically triggered by relatively mild events (such as low velocity grain-grain collisions) to produce the impulsive heating needed to eject or evaporate a portion of the grain mantle. An extremely complex and rather refractory substance possessing the infrared signatures of amino groups and carboxylic acid groups and having a maximum mass of 514 amu has been produced at a rate corresponding to a mass conversion rate of interstellar grains of between 2% and 20% in 107 yr. The shape and position of the astronomically observed 3.1 μm band is duplicated in the laboratory and is shown to be a natural consequence of the processing of grain mantles.
    Type of Medium:
    Electronic Resource
    URL:
    Articles: DFG German National Licenses
  16. 16
    Postel, W. ; Drawert, F. ; Hagen, W.
    Springer
    Published 1973
    Staff View
    ISSN:
    1438-2385
    Source:
    Springer Online Journal Archives 1860-2000
    Topics:
    Process Engineering, Biotechnology, Nutrition Technology
    Description / Table of Contents:
    Zusammenfassung In 99 Weinen wurde der Gehalt anl(+)- undd(−)-Lactat enzymatisch bestimmt. Die in der Literatur vorgeschlagene alkalische Verseifung des Weins darf nicht durchgeführt werden, da dies zu stark fehlerhaften Ergebnissen durch die Bildung von Milchsäure aus dem Restzucker der Weine führt. Auf einen Aufschluß durch Säure oder durch Kochen kann verzichtet werden, da die gebundene Menge an Milchsäure im Wein nur zu maximal 100–200 mg/l festgestellt wurde. Wenn nur der Gesamtlactatgehalt interessiert, so kann dieser ebenfalls enzymatisch ohne Differenzierung in die stereoisomeren Formen direkt bestimmt werden. Die Fehlerbreite der Methode ist gering; es besteht eine gute Übereinstimmung mit der chemischen Methode von Rebelein. Bei den untersuchten Weinen variiert bei einem Gesamt-Milchsäuregehalt von 0,10–5,61 g/l der Gehalt an L-Lactat zwischen 0,00 und 4,82 g/l, der Gehalt an D-Lactat zwischen 0,05 und 0,84 g/l. Bei niedrigen Gesamt-Milchsäuregehalten von weniger als 0,6 g/1 kann sowohld-Lactat als auchl-Lactat überwiegen. Je höher die Gesamt-Milchsäuregehalte ansteigen, desto mehr überwiegt dasl-Lactat, dessen Anteil bei Gesamt-Milchsäuregehalten von über 2 g/1 mehr als 80 bzw. 90% des Gesamtlactats beträgt.
    Notes:
    Summary Contents ofl(+)- andd(−)-lactic acid in 99 wines have been determined enzymatically. Alkaline hydrolysis of the wines, as proposed in the literature, should not be carried out, because erronious results are hereby obtained, due to the formation of lactic acid from the residual sugars of the wines. Acidic hydrolysis or heating may be dropped because the amounts of esterified lactic acid in wines have been ascertained to be only 100–200 mg/l (max.). If just interested in total lactic acid, disregarding any differentiation of stereoisomeres, then total lactic acid can also be directly determined enzymatically. The method only has a slight marginal error and the results are in good agreement with the chemical method by Rebelein. The content of total lactic acid varies from 0,10–5,61 g/1; ofl-lactic acid from 0,00–4,82 g/l and ofd-lactic acid from 0,05–0,84 g/l. In wines with very low content of total lactic acid (〈 0,6 g/l),d-lactic acid as well as L-lactic acid may be the dominent isomere. However, the higher the content of total lactic acid the more pronounced the content Ofl-lactic acid is. In wines containing more than 2 g/l of total lactic acid, more than 80-90% are taken up byl-lactic acid.
    Type of Medium:
    Electronic Resource
    URL:
    Articles: DFG German National Licenses
  17. 17
    Hagen, W.
    Springer
    Published 1928
    Staff View
    ISSN:
    1432-1440
    Source:
    Springer Online Journal Archives 1860-2000
    Topics:
    Medicine
    Type of Medium:
    Electronic Resource
    URL:
    Articles: DFG German National Licenses
  18. 18
    Lipshutz, B.H. ; Hagen, W.

    Amsterdam : Elsevier
    Staff View
    ISSN:
    0040-4039
    Source:
    Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics:
    Chemistry and Pharmacology
    Type of Medium:
    Electronic Resource
    URL:
    Articles: DFG German National Licenses
  19. 19
    Hagen, W.
    Springer
    Published 1922
    Staff View
    ISSN:
    1432-2307
    Source:
    Springer Online Journal Archives 1860-2000
    Topics:
    Medicine
    Type of Medium:
    Electronic Resource
    URL:
    Articles: DFG German National Licenses
  20. 20
    Mumm, N. ; Auel, H. ; Hanssen, H. ; Hagen, W. ; Richter, C. ; Hirche, H.-J.
    Springer
    Published 1998
    Staff View
    ISSN:
    1432-2056
    Source:
    Springer Online Journal Archives 1860-2000
    Topics:
    Biology
    Notes:
    Abstract Mesozooplankton collected during five summer expeditions to the Arctic Ocean between 1987 and 1991 was analysed for regional patterns in biomass and species distribution, distinguishing between an epipelagic (0–100 m) and a deeper (0–500 m) layer. A total of 58 stations was sampled mainly in the Nansen, Amundsen and Makarov Basins of the central Arctic Ocean and in areas of the Greenland Sea, West Spitsbergen Current and Barents Sea. Results from the different expeditions were combined to create a transect extending from the Fram Strait across the Eurasian Basin into the Makarov Basin. Mesozooplankton dry mass in the upper 500 m decreased from 8.4 g m−2 in the West Spitsbergen Current to less than 2 g m−2 in the high-Arctic deep-sea basins. In the central Arctic Ocean, biomass was concentrated in the upper 100 m and was dominated by the large copepods Calanus hyperboreus and C. glacialis. In contrast, the mesozooplankton in the West Spitsbergen Current was more evenly distributed throughout the upper 500 m, with C. finmarchicus as the prevailing species. The distribution of abundant mesopelagic species reflected the hydrographic regime: the calanoid copepod Gaetanus tenuispinus and the hyperiid amphipod Themisto abyssorum were most abundant in the Atlantic inflow, while Scaphocalanus magnus was a typical component of the high-Arctic fauna. The relatively high mesozooplankton biomass and the occurrence of boreal-Atlantic species in the central Arctic Ocean are indicators for the import of organic material from allochthonous sources, especially from the northern North Atlantic. Hence, in spite of its enclosure by land masses, the Arctic Ocean is characterized by an exchange of water masses and organisms with the North Atlantic, and advection processes strongly influence the distribution of plankton species in this high-latitude ecosystem.
    Type of Medium:
    Electronic Resource
    URL:
    Articles: DFG German National Licenses