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Biological systems, ionizing radiation

Several studies have reported the influence of nitroimidazole derivatives on biological systems. Thus the influence of Misonidazole, l-(2-nitro-l-imidazoyl)-3-methoxy-propan-2-ol, on strand breaking in calf thymus DNA under ionizing radiation conditions has been assessed70. Pulse-radiolysis studies of nitroheterocyclic compounds have examined... [Pg.833]

Absorbed dose is a scientifically rigorously defined quantity which is used to quantify the exposure of humans, biological systems, and any type of material to ionizing radiation. [Pg.748]

A more reliable means of providing a reference of -OH in a biological system maybe by means of irradiation with ionizing radiation (von Sonntag et al. 2000). The action of ionizing radiation on an aqueous medium gives rise to OH whose yield/dose relationship (G value) is known (Chap. 2). Apart from this, since biological media are concentrated solutions the formation of the indicator product, e.g., a phenol (ArOH), via the direct effect [expressions (69) and (70)] must in principle be taken into account as well. It can be shown that with k4i [probe]/ k42 [cellular components] above 10 4 the direct effect contributes less than 10%... [Pg.67]

See other pages where Biological systems, ionizing radiation is mentioned: [Pg.187]    [Pg.187]    [Pg.27]    [Pg.3550]    [Pg.902]    [Pg.938]    [Pg.855]    [Pg.3]    [Pg.5]    [Pg.308]    [Pg.10]    [Pg.288]    [Pg.179]    [Pg.833]    [Pg.1636]    [Pg.320]    [Pg.172]    [Pg.184]    [Pg.427]    [Pg.170]    [Pg.503]    [Pg.802]    [Pg.1682]    [Pg.123]    [Pg.130]    [Pg.133]    [Pg.834]    [Pg.532]    [Pg.627]    [Pg.871]    [Pg.128]    [Pg.129]    [Pg.131]    [Pg.143]    [Pg.106]    [Pg.379]    [Pg.380]    [Pg.440]    [Pg.35]    [Pg.172]    [Pg.184]    [Pg.619]    [Pg.620]    [Pg.621]   


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Biological systems, ionizing radiation effects

Ionizing radiation

Ionizing radiation on biological systems

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