Zobrazeno 1 - 10
of 82
pro vyhledávání: '"Andrzej Plonka"'
Autor:
Andrzej Plonka
Dynamical processes in which many timescales coexist are called dispersive. The rate coefficients for dispersive processes depend on time. In the case of a chemical reaction, the time dependence of the rate coefficient, k(t), termed the specific reac
Autor:
Ewa Szajdzinska-Pietek, Erwin Mayer, Justyna Staluszka, Andrzej Plonka, Andreas Hallbrucker, Ingrid Kohl
Publikováno v:
Radiation Physics and Chemistry. 67:247-250
Using X-band ESR spectroscopy we have studied radicals produced by g-irradiation at 77 K in hyperquenched glassy water (HGW) doped with thymine, 2 0 -deoxythymidyne, 2-deoxy-d-ribose, and the equimolar mixture of thymine and 2deoxy-d-ribose. In HGW m
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a2e3ce714974f30a5cd9546ca57ba139
https://doi.org/10.1016/s0969-806x(03)00046-x
https://doi.org/10.1016/s0969-806x(03)00046-x
Autor:
Andrzej Plonka, Ingrid Kohl, Andreas Hallbrucker, Ewa Szajdzinska-Pietek, Justyna Staluszka, Erwin Mayer
Publikováno v:
Research on Chemical Intermediates. 29:63-70
A dispersive model of radical accumulation in irradiated solids is discussed by the example of hexagonal ice (Ih) and cubic ice (Ic) obtained by annealing of hyperquenched glassy water at 160 K. The model assumes that radical production upon γ-irrad
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cb29d67f7b54bf03b5f3bde0cb36bcc4
https://doi.org/10.1163/156856703321328415
https://doi.org/10.1163/156856703321328415
Autor:
Andrzej Plonka
Publikováno v:
Annual Reports Section "C" (Physical Chemistry). 97:91-147
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::be1aef6a686ba4cb42e4fbc493ecb6da
https://doi.org/10.1039/b100666p
https://doi.org/10.1039/b100666p
Autor:
Andrzej Plonka
Publikováno v:
Chemical Physics Letters. 328:124-128
The stretched exponential (SE) and the power law (PL), fitting equally well the disulfide recombination of a de-novo peptide, differ markedly in estimation of thiyl radical population. This leads to quite different lifetime distribution functions enc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::52120ad15079de6f27d978c7bc00546b
https://doi.org/10.1016/s0009-2614(00)00921-0
https://doi.org/10.1016/s0009-2614(00)00921-0
Autor:
Andrzej Plonka
Publikováno v:
Progress in Reaction Kinetics and Mechanism. 25:109-217
In general, chemical reactions proceeding on time scales comparable to, or shorter than, those of internal rearrangements in a reaction system renewing the environment of the reactants (mixing), are dispersive. For dispersive kinetics, as for dispers
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::860c0b455c3311649e292eb53a5ae026
https://doi.org/10.3184/007967400103165137
https://doi.org/10.3184/007967400103165137
Autor:
Andrzej Plonka
Publikováno v:
Journal of Molecular Liquids. 86:3-12
Some of the recent developments in dispersive kinetics are highlighted. Special attention is paid to renormalization of rate coefficients following from the stochastic theory of renewals (structural relaxations) in the reaction system.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8af553758154e6fa7e2fac197fd8ba24
https://doi.org/10.1016/s0167-7322(99)00119-1
https://doi.org/10.1016/s0167-7322(99)00119-1
Autor:
Andrzej Plonka
Publikováno v:
The Journal of Physical Chemistry B. 104:3804-3807
Most of low-temperature reactions proceed faster than would be predicted by an Arrhenius-type extrapolation from the high-temperature regions. The definitions of low- and high-temperature regions a...
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ae09c4b1803f042f1cbedcc66cd9118a
https://doi.org/10.1021/jp9931657
https://doi.org/10.1021/jp9931657
Publikováno v:
Physical Chemistry Chemical Physics. 2:1587-1593
The effects of γ-irradiating three metastable forms of water at 77 K have been studied by electron spin resonance spectroscopy and are compared with those of hexagonal ice. Two amorphous forms of water were made by so-called hyperquenching of liquid
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9d4f13033397644f33c72fc5aa58640e
https://doi.org/10.1039/a908700a
https://doi.org/10.1039/a908700a
Publikováno v:
Macromolecules. 32:7454-7460
Aqueous solutions of Nafion, an ionomer consisting of a perfluorinated backbone and pendant sulfonic groups, were studied by the electron spin resonance (ESR) spin probe method and by fluorescence spectroscopy. The spin probes used were 4-(N,N-dimeth
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7a4a89e19973cf8905b7cba214994ddf
https://doi.org/10.1021/ma990710t
https://doi.org/10.1021/ma990710t