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  • Articles  (5)
  • Articles: DFG German National Licenses  (5)
  • Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition  (3)
  • Energy, Environment Protection, Nuclear Power Engineering  (2)
  • 1
    Electronic Resource
    Electronic Resource
    A Monte Carlo program for the calculation of gamma-ray spectra for germanium detectors
    Amsterdam : Elsevier
    Nuclear Instruments and Methods 119 (1974), S. 521-526 
    Details
    ISSN: 0029-554X
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Physics
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0029-554X(74)90802-7
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  • 2
    Electronic Resource
    Electronic Resource
    Preliminary results on nitric oxide emission from a southern African savanna ecosystem (1997)
    Springer
    Nutrient cycling in agroecosystems 48 (1997), S. 123-138 
    Details
    ISSN: 1573-0867
    Keywords: Africa ; biogenic emission ; dry season ; dynamic chamber ; forest ; grassland ; groundnut ; maize ; Miombo typesavanna ecosystem ; nitric oxide ; pulsing ; sorghum ; wet season ; Zimbabwe
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract During October to December 1994, we measured diel and seasonal variability in nitric oxide (NO) exchange by a southern African savanna ecosystem (Grasslands Research Station, Marondera, Zimbabwe). A set of automated dynamic chambers was installed in three sub-sites: Miombo forest, natural grassland, and cropped soils (maize, sorghum, groundnut). The latter received a single application of commercialy available in-organic or cowdung fertilizer. The dynamic chamber system is described in detail, including correction of the resulting data for wall losses and gas-phase reactions of the NO-NO2-O3 triad. During the dry season, net vertical NO fluxes were close to the detection limit (0.44 ngN m-2s-1) regardless of vegetation type. During the transition from dry to wet season strong "pulsing" effects of the NO flux were observed: NO emissions increased by a factor of up to 60 within hours. During the wet season, NO emissions varied between the different sub-sites of the ecosystem; corresponding means are in ranking order of fertilized agricultural plots (27.2 ngN m-2 s-1), unfertilized agricultural plots (8.5 ngN m-2 s-1 ), grassland (4.4 ngN m-2 s-1 ), and Miombo forest (1.5 ngN m-2 s-1). Soil moisture was found to be the dominant factor controlling the NO fluxes. Whenever it was not limiting, the diel behaviour of NO emission followed the daily variation of soil temperature measured 1 cm below the surface.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1009765510538
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  • 3
    Electronic Resource
    Electronic Resource
    Infrarotanalyse zur Messung der Holzqualität (1999)
    Springer
    Holz als Roh- und Werkstoff 57 (1999), S. 23-28 
    Details
    ISSN: 1436-736X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Description / Table of Contents: Eucalyptus globulus , Pinus pinaster and Pinus caribea can be classified regardless of the chip condition. In wood mixtures the mixing ratio and the moisture of the different wood species can be measured.
    Notes: Eucalyptus globulus , Pinus pinaster und Pinus caribea durchzuführen. In Holzmischungen kann das Mischungsverhältnis und die Feuchte der einzelnen Hölzer gemessen werden.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s001070050004
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  • 4
    Electronic Resource
    Electronic Resource
    Seed specific expression of the 2S albumin gene from Brazil nut (Bertholletia excelsa) in transgenicVicia narbonensis (1995)
    Springer
    Molecular breeding 1 (1995), S. 295-301 
    Details
    ISSN: 1572-9788
    Keywords: Brazil nut protein, grain legumes, leguminB4 promoter ; seed storage protein ; sulphur amino acid deficiency ; transgenic plants ; Vicia narbonensis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract In order to evaluate the possibility of enhancing the sulphur amino acids in grain legumes, we have transferred the gene for the methionine-rich 2S albumin from Brazil nut (Bertholletia excelsa) controlled by a seed-specific promoter intoVicia narbonensis. The coding region of the 2S albumin gene that has been completely synthesized was fused to the seed-specific leguminB4 promoter fromVicia faba. Transgenic lines ofV. narbonensis were generated viaAgrobacterium-mediated gene analysis of leaves, stems, roots and seeds of four R0 plants revealed that the expression of the foreign 2S albumin gene occurred in a seed-specific manner and that the foreign protein is present at levels ranging from 1% to 4.8% of total SDS-soluble seed protein. Since the current protocol for transformation ofV. narbonensis has not yet been published, a detailed description of the method is given.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02277429
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  • 5
    Electronic Resource
    Electronic Resource
    Combined application of INAA and PIXE for studying the regional aerosol composition in Southern Africa (1997)
    Springer
    Journal of radioanalytical and nuclear chemistry 216 (1997), S. 143-148 
    Details
    ISSN: 1588-2780
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract As part of the SAFARI-92 biomass buming experiment, aerosol collections were carried out with several size-fractionating sampling devices at a number of sites in Southern Africa. One of the samplers used at all ground-based sites was a stacked filter unit (SFU). The SFU samples were analyzed by both INAA and PIXE analysis. The present paper gives an intercomparison of the analytical results obtained in order to assess the accuracy and to check the quality assurance of the analytical procedures. Twenty-one common elements were determined by both INAA and PIXE. Concentrations of 13 elements (i.e., Na, Mg, Al, Cl, K, Ca, Ti, V, Cr, Mn, Fe, Zn and Br) were generally measured with sufficient precision in both techniques for performing the intercomparison. The INAA and PIXE data were compared in terms of PIXE/INAA concentration ratios on a sample by sample basis for the coarse and fine size fraction separately. the atmospheric concentrations for K, Mn and Fe agreed within 5–10%, the agreement between the data for the other common elements was typically better than 15%. Possible explanations for lower than 1.0 ratios for Cl, Br and Na are presented. The common elements were classified into groups according to their detectability and sensitivity in each technique.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02034512
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