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  • Analytical Chemistry and Spectroscopy  (2)
  • Albumin  (1)
  • Forests  (1)
  • 1
    Electronic Resource
    Electronic Resource
    The hexa- and pentapeptide extension of proalbumin II. Processing of specific antibodies against the synthetic hexapaptide
    Amsterdam : Elsevier
    BBA - Protein Structure 670 (1981), S. 424-427 
    Details
    ISSN: 0005-2795
    Keywords: Albumin ; Antibody development ; ELISA ; Immunodiffusion ; Peptide synthesis ; Proalbumin
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0005-2795(81)90116-1
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Estimating the uptake of traffic-derived NO2 from 15N abundance in Norway spruce needles (1999)
    Springer
    Oecologia 118 (1999), S. 124-131 
    Details
    ISSN: 1432-1939
    Keywords: Key words15N ; Forests ; Spruce ; Picea abies ; NO2 deposition
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The 15N ratio of nitrogen oxides (NOx) emitted from vehicles, measured in the air adjacent to a highway in the Swiss Middle Land, was very high [δ15N(NO2) = +5.7‰]. This high 15N abundance was used to estimate long-term NO2 dry deposition into a forest ecosystem by measuring δ15N in the needles and the soil of potted and autochthonous spruce trees [Picea abies (L.) Karst] exposed to NO2 in a transect orthogonal to the highway. δ15N in the current-year needles of potted trees was 2.0‰ higher than that of the control after 4 months of exposure close to the highway, suggesting a 25% contribution to the N-nutrition of these needles. Needle fall into the pots was prevented by grids placed above the soil, while the continuous decomposition of needle litter below the autochthonous trees over previous years has increased δ15N values in the soil, resulting in parallel gradients of δ15N in soil and needles with distance from the highway. Estimates of NO2 uptake into needles obtained from the δ15N data were significantly correlated with the inputs calculated with a shoot gas exchange model based on a parameterisation widely used in deposition modelling. Therefore, we provide an indication of estimated N inputs to forest ecosystems via dry deposition of NO2 at the receptor level under field conditions.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s004420050710
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    A novel hybrid mass spectrometer (1989)
    New York, NY : Wiley-Blackwell
    Rapid Communications in Mass Spectrometry 3 (1989), S. 62-66 
    Details
    ISSN: 0951-4198
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Physics
    Notes: A new hybrid mass spectrometer of BEQiQu geometry (B, magnetic sector; E, Electric sector; Qi, quistor; Qu, quadrupole mass filter) is described. The high resolution stage (BE) is coupled to a quistor via a series of deceleration lenses, and this is followed by a mass-analysing quadrupole. This configuration enables the storing of ions, investigation of their gas-phase chemistry and the subsequent identification of the resulting fragment or product ions.
    Additional Material: 12 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/rcm.1290030303
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    A deceleration lens system for hybrid mass spectrometers (1989)
    New York, NY : Wiley-Blackwell
    Rapid Communications in Mass Spectrometry 3 (1989), S. 417-419 
    Details
    ISSN: 0951-4198
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Physics
    Notes: A simple and efficient deceleration system for the coupling of magnetic and electric sector instruments to quadrupole analyzers is described. The trasnsmission efficiency of the system appears to be at least 80% or better as the ions are decelerated from 3 ke V to 30 eV (a deceleration factor of 1:100). No mass discrimination was observed in the range up to mass 1000.
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/rcm.1290031203
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    Paper (German National Licenses)
    Fulltext
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