Zobrazeno 1 - 10
of 83
pro vyhledávání: '"H. Förstel"'
Publikováno v:
Radiation Effects and Defects in Solids. 164:382-385
Methods to measure low concentrations of tritium and radiocarbon in wine and champagne, respectively, have been tested by using liquid scintillation counting after chemical sample processing. It could be shown that tritium activity was too low to be
Autor:
A. Matin, J. C. Gottschal, P. Fassati, H. Förstel, G. Schleser, P. E. Davis, A. Whitaker, D. L. Cohen, D. E. Brown, M. A. Zainudeen, A. G. Williams, J. W. T. Wimpenny, Adapa P. Gandhi, Derek H. Bone, W. Keith Marshall, A. Trilli, S. J. Pirt, E. Senior, J. H. Slater, A. T. Bull, Helena Oberman, Zdzislawa Libudzisz, T. J. Mason, Nancy F. Millis, Fayyaz A. Mian, Abbas Fazeli, J. Meyrath, R. Braun, Ena Kohlwein, A. Leschnik, A. Maderner, L. G. Zhdanova, G. M. Mashilova, I. A. Bassnakyan, I. M. Groober, S. J. Savranskaya, N. V. Volkova, N. A. Rostovtsava, M. Bošnjak, M. Holjevac, Vera Johanides, J. T. M. Wouters, P. J. Buysman, J. E. Finch, M. R. W. Brown, P. J. Rogers, P. R. Stewart, Leif Kjaergaard, G. Hantos, E. N. Udvardy, M. Trinn, Pauli Kiel, D. E. Minnikin, H. Abdolrahimazadeh, M. E. Bushell, O. M. Neijssel, D. W. Tempest, H. Aiking, Florry A. Vyth, I. L. Rabotnova, I. A. Tsapline, L. G. Loginova, Michael Tovey, Danièle Brouty-Boyé, J. A. Howell, C. T. Chi, J. M. Smith, P. M. Robinson, S. J. Chapman, Peter J. Senior, H. W. Fowler, S. B. Primrose, John E. Smith
Publikováno v:
Journal of Applied Chemistry and Biotechnology. 26:323-350
Autor:
M. Boner, H. Förstel
Publikováno v:
Analytical and Bioanalytical Chemistry. 378:301-310
Organic beef coming principally from Germany was analysed for the hydrogen, carbon, oxygen, nitrogen and sulfur stable isotopic composition to test the possibility of tracing back the geographical origin. Since there is a well-known pattern of D/H an
Publikováno v:
Journal of Environmental Radioactivity. 45:191-217
Radionuclide soil-to-crop transfer was analysed in large undisturbed soil monoliths installed in lysimeters under controlled climatic conditions. The soils were representative of large agricultural areas in the European Union: Loamy-sand Orthic Podzo
Publikováno v:
Archives of Agronomy and Soil Science. 40:453-471
Zur Untersuchung der Wasser‐ und Anionen‐ (Bromid, Nitrat) Bewegung in drei Lysimeter‐Bodenmono‐lithen (Braunerde/Sandlos, Staugley/Sandlos, Los‐Schwarzerde) wurden Stabilisotope (D2O, [l5N]Nitrat) und konservative (Bromid) Tracer eingesetz
Autor:
H. Förstel
Publikováno v:
Isotopes in Environmental and Health Studies. 32:1-13
The history of production and application of the stable nitrogen isotope15N in Germany is mainly part of the history of the former Institute of Stable Isotopes, later a part of the Central Institute of Isotope and Radiation Research (Zentralinstitut
Publikováno v:
Zeitschrift f�r Lebensmittel-Untersuchung und -Forschung. 198:223-229
Das Verhaltnis der stabilen Isotopen18O/16O wurde als Abweichung von einem Standard (Delta-Wert in Promille; Standard SMOW) mittels SIRA an insgesamt 359 Weinproben aus Tunesien, Portugal, Griechenland, Italien, Spanien und Ungarn bestimmt. Das ermit
Autor:
H. Förstel, R. Russow
Publikováno v:
Isotopenpraxis Isotopes in Environmental and Health Studies. 29:327-334
When tracing the fluxes of N compounds (especially N oxides) and carbon dioxide in the system soil-atmosphere and applying 15N and 13C, it is necessary to simultaneously determine both the concentration of the substances and their isotopic compositio
Publikováno v:
Atmospheric Environment. Part A. General Topics. 27:2137-2145
The uptake of NO, NO2 and O3 by sunflowers (Helianthus annuus L. var. giganteus) and tobacco plants (Nicotiana tabacum L. var. Bel W3), using concentrations representative for moderately polluted air, has been determined by gas exchange experiments.
Publikováno v:
Isotopenpraxis Isotopes in Environmental and Health Studies. 29:251-254
[15N]nitric oxide for investigations on the effect of nitric oxide in biological systems can be synthesized economically from the commercially available [15N]nitric acid. Difficulties arise, however, for the preparation of highly enriched 15N-labelle