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  • 1
    Electronic Resource
    Electronic Resource
    Zum kernphotoeffekt am tritium
    Amsterdam : Elsevier
    Physics Letters 21 (1966), S. 199-200 
    Details
    ISSN: 0031-9163
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Physics
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0031-9163(66)90314-3
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  • 2
    Electronic Resource
    Electronic Resource
    Selective radiolysis of enantiomers (1976)
    Springer
    Radiation and environmental biophysics 13 (1976), S. 63-69 
    Details
    ISSN: 1432-2099
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Physics
    Notes: Summary The gamma-induced decarboxylation ofβ-phenylalanine in the solid state is a chain reaction. Both enantiomers and the racemate ofβ-phenylalanine-1-14C show different exponential dose-effect curves for the radiation-induced cleavage of14CO2.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01323625
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  • 3
    Electronic Resource
    Electronic Resource
    Die Tritiumabspaltung aus festem Adenin-2-T und Adenin-8-T unter der Einwirkung von60Co-γ-Strahlung (1972)
    Springer
    Radiation and environmental biophysics 8 (1972), S. 245-253 
    Details
    ISSN: 1432-2099
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Physics
    Description / Table of Contents: Zusammenfassung Im Anschluß an eine frühere Arbeit (Merwitz, 1971), welche die Dosiseffektkurven für die strahleninduzierte Tritiumabspaltung aus spezifisch markierten Thyminen beschreibt, wurde die Tritiumabspaltung aus Adenin-2-T und Adenin-8-T untersucht. Die graphisch ermittelten Schwellenwertdosen für die Tritiumabspaltung liegen bei 3·105 rad für Adenin-8-T und bei 2·107 rad für Adenin-2-T. Der Vergleich der Dosiseffektkurven zeigt, daß die Tritiumabspaltung aus den spezifisch markierten Adeninen im Gegensatz zu den Thyminen erst bei hohen Dosen einsetzt. Die unterschiedliche Strahlenresistenz von Thymin und Adenin wird diskutiert.
    Notes: Summary In continuation to our previous studies (Merwitz, 1971) specifying the dose effect curves for the radiation-induced tritium cleavage from specifically labeled thymines, tritium cleavage from adenine-2-T and adenine-8-T has been investigated. The graphically determined threshold doses for the cleavage of tritium are in the range of 3·105 rad for adenine-8-T and in the range of 2·107 rad for adenine-2-T. Comparison of the dose-effect curves proves that, in contrast to the thymines, tritium cleavage from specifically labeled adenines requires high doses. The divergent radioresistances of thymine and adenine are being discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01268167
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Radiation-induced transmethylation and transsulfuration in the system DNA-methionine
    Amsterdam : Elsevier
    International Journal of Radiation Applications & Instrumentation. Part C, 40 (1992), S. 427-432 
    Details
    ISSN: 1359-0197
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Chemistry and Pharmacology , Energy, Environment Protection, Nuclear Power Engineering , Physics
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/1359-0197(92)90205-T
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  • 5
    Electronic Resource
    Electronic Resource
    Die Tritiumabspaltung aus festem, gammabestrahltem Cytosin-5-T (1974)
    Springer
    Radiation and environmental biophysics 11 (1974), S. 63-68 
    Details
    ISSN: 1432-2099
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Physics
    Description / Table of Contents: Zusammenfassung Die Dosiseffektkurve für die Tritiumabspaltung ausγ-bestrahltem Cytosin-5-T wurde gemessen und mit den Dosiseffektkurven für andere spezifisch markierte Nukleinsäurebasen verglichen. Die graphisch ermittelte Schwellenwertdosis für die Tritium-abspaltung aus Cytosin-5-T liegt bei 2 ⋅ 104 rad. Die strahleninduzierten Cytosinradikale werden diskutiert.
    Notes: Summary The dose-effect curve for the cleavage of tritium fromγ-irradiated cytosine-5-T has been measured and compared with dose-effect curves for other specifically labeled nucleic acid bases. The graphically determined threshold dose for the cleavage of tritium from cytosine-5-T is of the order of 2 ⋅ 104 rad. The radiation-induced radicals in cytosine are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01323101
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  • 6
    Electronic Resource
    Electronic Resource
    Linear and sigmoid dose-effect relations: Investigations with gamma-irradiated thymine-(methyl-T) in aqueous solution and in the solid state (1974)
    Springer
    Radiation and environmental biophysics 11 (1974), S. 69-77 
    Details
    ISSN: 1432-2099
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Physics
    Notes: Summary The example of thymine-(methyl-T) demonstrates that in the case of radiation damage to one type of molecule different dose-effect curves will occur depending on the state of the molecule. Radiation-induced tritium cleavage from an aerated aqueous solution of thymine-(methyl-T) shows a linear dose dependence without threshold, tritium cleavage from solid thymine-(methyl-T) follows a sigmoid dose-effect curve with threshold. TheG-values for the tritium cleavage from dissolved thymine-(methyl-T) depend on the concentration of the solution, while theG-values for the tritium cleavage from solid thymine-(methyl-T) depend on the dose. The extent of radiation damage in the solid state and in solution is subject to comparative analysis, and the difference in dose-effect relations is discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01323102
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  • 7
    Electronic Resource
    Electronic Resource
    Gamma-induced tritium cleavage from DNA-(thymidine-methyl-T) in deaerated aqueous solution (1981)
    Springer
    Radiation and environmental biophysics 19 (1981), S. 297-297 
    Details
    ISSN: 1432-2099
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01324103
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  • 8
    Electronic Resource
    Electronic Resource
    Die Tritiumabspaltung aus festem, gamma-bestrahltem Uracil-5-T und Uracil-6-T (1972)
    Springer
    Radiation and environmental biophysics 8 (1972), S. 310-315 
    Details
    ISSN: 1432-2099
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Physics
    Description / Table of Contents: Zusammenfassung In Fortführung früherer Arbeiten, welche die Dosiseffektkurven für die strahleninduzierte Tritiumabspaltung aus Thymin-(methyl-T) und Thymin-6-T (Merwitz, 1971) sowie aus Adenin-2-T und Adenin-8-T (Merwitz, 1972) beschrieben, wurde die Tritiumabspaltung aus Uracil-5-T und Uracil-6-T untersucht. Der Vergleich der Dosiseffektkurven zeigt, daß die Strahlenresistenz in der Reihenfolge Thymin, Uracil, Adenin zunimmt. Die graphisch ermittelten Schwellenwertdosen für die Tritiumabspaltung liegen bei 104 rad für Uracil-5-T und bei 2·104 rad für Uracil-6-T. Die Korrelation zwischen der Wasserstoffabspaltung und der Bildung von Wasserstoff-Additionsradikalen wird diskutiert.
    Notes: Summary In continuation to our previous studies specifying the dose-effect curves for the radiation-induced tritium cleavage from thymine-(methyl-T) and thymine-6-T (Merwitz, 1971) and from adenine-2-T and adenine-8-T (Merwitz, 1972), tritium cleavage from uracil-5-T and uracil-6-T has been investigated. The comparison of dose-effect curves shows that the radioresistance is increased in the order thymine, uracil, and adenine, respectively. The graphically determined threshold doses for the cleavage of tritium are in the range of 104 rad for uracil-5-T and of 2·104 rad for uracil-6-T. The correlation between cleavage of hydrogen and formation of hydrogen-addition radicals have been discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01190616
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  • 9
    Electronic Resource
    Electronic Resource
    Oxygen effect and influence of buffer on radiation-induced tritium cleavage from phage-T2-DNA-(methyl-3H) in aqueous solution (1985)
    Springer
    Radiation and environmental biophysics 24 (1985), S. 239-249 
    Details
    ISSN: 1432-2099
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Physics
    Notes: Summary The effect of gamma irradiation on tritium release into water (HTO) from phage T2-DNA-(methyl-3H) was studied in diluted aqueous solution. The influence of O2 and of citrate and phosphate buffer was investigated. In oxygenated solutions an enhancement ratio of 3 was found. From the linear dose yield relationsG values were calculated. In the presence of N2O tritium release was doubled, whereas tritium release decreased with increasing citrate concentration. It has been concluded that the major precursor of this tritium release is the OH radical. This was substantiated by experiments using thymine-(methyl-3H) and dimethylsulfoxide.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01210931
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