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17 (0,076s) •

Result

Dose-Rate effects in breaking DNA strands by short pulses of extreme ultraviolet radiation

Dose-rate effects on strand break formation in plasmid DNA induced by pulsed extreme ultraviolet (XUV) radiation were examined. Dose delivered to the target molecule was controlled by attenuating the incident photon flux using aluminum filters as wel...

Optics (including laser optics and quantum optics)

  • 2018
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  • Jimp
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  • Link
Result

At the crossroad of photochemistry and radiation chemistry: formation of hydroxyl radicals in diluted aqueous solutions exposed to ultraviolet radiation

Formation yields of center dot OH radicals were precisely determined in aqueous solutions of coumarin-3-carboxylic acid and ferrous sulfate (i.e., Fricke dosimeter) exposed to 253.7 nm radiation delivered from a continuous source. Quantum yield of ce...

Optics (including laser optics and quantum optics)

  • 2017
    • •
  • Jimp
    • •
  • Link
Result

Degradation of phospholipids under different types of irradiation and varying oxygen saturation

The effects of different types of radiation on the formation of peroxide forms of 2-dioleoyl-sn-glycero-3-phosphocholine were studied under various conditions. For the irradiation, an aqueous solution of small unilamellar vesicles was prepared. Varia...

Biophysics

  • 2017
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  • Jimp
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  • Link
Result

Argon FTIR spectra between 800 and 2000 cm1: h- and i-levels and transition probabilities

The new emission spectrum of atomic argon is measured using the time-resolved Fourier transform technique. Seventy-seven new Ar I lines in the View the MathML source800–2000cm1 range with a resolution of View the MathML source0.02cm1 are observed. Th...

CF - Fyzikální chemie a teoretická chemie

  • 2016
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  • Jx
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  • Link
Result

Preliminary study on singlet oxygen production using CeF3:Tb3+@SiO2-PpIX.

Luminescent properties and singlet oxygen production using with SiO2 and protoporphyrin IX (PpIX) were studied. CeF3:Tb3þ nanopowder was prepared via sol-gel route, with subsequent surface coating by SiO2 layer and the conjugation with photosensitive...

BM - Fyzika pevných látek a magnetismus

  • 2016
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  • Jx
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  • Link
Result

DNA strand breaks induced by soft X-ray pulses from a compact laser plasma source

Application of a compact laser plasma source of soft X-rays in radiobiology studies is demonstrated. The source is based on a laser produced plasma as a result of irradiation of a double-stream gas puff target with nanosecond laser pulses from a comm...

BO - Biofyzika

  • 2016
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  • Jx
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  • Link
Result

Determination of the survival of yeast and bacteria under the influence of gamma or UV radiation in the presence of some scavengers of OH radicals

The new methods for quantitative determination of the role of scavengers of OH radicals in the radiation protection of various microorganisms were studied. The described methods may be helpful for study of the radiation protection of cells, radiation...

EF - Botanika

  • 2015
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  • Jx
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  • Link
Result

Breaking DNA strands by extreme-ultraviolet laser pulses in vacuum

Ionizing radiation induces a variety of DNA damages including single-strand breaks (SSBs), double-strand breaks (DSBs), abasic sites, modified sugars, and bases. We have studied the nature of DNA damage induced directly by the pulsed 46.9nm (26.5 eV)...

BO - Biofyzika

  • 2015
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  • Jx
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  • Link
Result

Radiation induced dechlorination of some chlorinated hydrocarbons in aqueous suspensions of various solid particles

Radiation induced dechlorination of trichloroethylene (TCE) and tetrachloroethylene (PCE) in aqueous solutions containing the active carbon (AC) or cupric oxide (CuO) as the modifiers was studied. The obtained results were compared to the previously ...

CH - Jaderná a kvantová chemie, fotochemie

  • 2015
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  • Jx
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  • Link
Result

Proton-induced direct and indirect damage of plasmid DNA

Clustered DNA damage induced by 10, 20 and 30 MeV protons in pBR322 plasmid DNA was investigated. Besides determination of strand breaks, additional lesions were detected using base excision repair enzymes. The plasmid was irradiated in dry form, whe...

BO - Biofyzika

  • 2015
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  • Jx
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  • Link
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