Zobrazeno 1 - 10
of 123
pro vyhledávání: '"R. H. Dekker"'
Publikováno v:
Recueil des Travaux Chimiques des Pays-Bas. 94:106-109
Anaerobic irradiation of an aqueous acid solution of lumichrome (7,8-dimethylalloxazine) initially leads to the formation of 9-hydroxylumichrome (II), 5,10-dihydrolumichrome (III) and 9-hydroxy-5,10-dihydrolumichrome (IV) in equilibrium with lumichro
Publikováno v:
Tellus A; Vol 11, No 4 (1959)
Sartryck ur Tellus, 4, 404-407
Sartryck ur Tellus, 4, 404-407
The artificial radioactivity in rain was measured as a function of rainfall rate. As a rule an inverse relationship was found between the specific activity and the rate of rainfall. A tentative explanation is given. DOI: 10.1111/j.2153-3490.1959.tb00
Publikováno v:
Journal of Photochemistry. 13:133-147
The photohydration of N5− and N10− substituted alloxazinium cations is described. In dilute buffer the photoreaction of 1,3,5,7,8-pentamethyl-alloxazinium (5-PMA+) perchlorate appears to be much faster than the competing dark reaction, i.e. the N
Publikováno v:
Photochemistry and Photobiology. 44:197-205
— A high resolution action spectrum for photoreactivation was determined using purified photoreactivating enzyme from Streptomyces griseus. Conversion of pyrimidine dimers in UV-irradiated DNA, the substrate for photoreactivating enzyme, was measur
Publikováno v:
Journal of Geophysical Research. 66:135-141
Some results of measurements are presented pertaining to the maximum of fall-out which was observed during the spring of the last few years. Evidence is presented that the height of this maximum is chiefly determined by the amount of radioactive debr
Publikováno v:
Photochemistry and Photobiology. 18:457-466
— The photobleaching of alloxazine in buffered aqueous solution has been studied by means of flash photolysis using conventional and laser excitation sources. Several transient species have been characterized. The alloxazine triplet state (Λmax 42
Publikováno v:
Applied Scientific Research, Section B. 7:150-152
Publikováno v:
Physical Chemistry Chemical Physics (PCCP); 7/28/2024, Vol. 26 Issue 28, p19554-19563, 10p
Publikováno v:
Photochemistry and photobiology. 33(1)
— A structure for the chromophoric part of the intrinsic cofactor of Streptomyces griseus photo-reactivating enzyme is suggested on the basis of absorption and fluorescence spectra of cofactor and reference compounds at various pH. The essential ch
Publikováno v:
Photochemistry and photobiology. 23(3)
— Flash photolysis experiments on the hydroxylation of lumichrome (L) in aqueous 0.5 M H2SO4 solution in the presence of O2 or Ni2+ as triplet quenchers and quantum yield measurements confirm the assignment of the photoreactive species to the proto