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Publikováno v: Photochemistry and Photobiology. 16:305-314

— The energetics of photodynamic action is discussed in terms of oxidation potentials of sensitizing dye intermediates. The results are compared with rate constants and quantum yields for photodynamic oxidation of iodide ion, aromatic amino acids,

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::3f52b1d6850605ac8d387c58bfc3e282
https://doi.org/10.1111/j.1751-1097.1972.tb06300.x

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A double-junction technique for total central nervous system irradiation with a 4-MV accelerator

Autor: P M Johnson, A G Kepka

Publikováno v: Radiology. 145:467-471

An analysis is presented of a double-junction technique for the treatment of the complete central nervous system using orthogonal brain and spine ports from a 4-MV linear accelerator with a lead flattening filter. Experimental results are compared wi

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2e69eaa8b2bd6fc572f70f2824a19673
https://doi.org/10.1148/radiology.145.2.6813908

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The effect of off-axis quality changes on zero area TAR for megavoltage beams

Autor: J David, P M Johnson, A G Kepka

Publikováno v: Physics in Medicine and Biology. 30:589-595

An analytical technique was employed to extract the primary component of dose at off-axis points from broad-beam water phantom data for a Clinac-18 Clinac-6 (100), Clinac-4 (Pb filter) and Philip's cobalt unit. The methodology presented here does not

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::3a4b63e016b6b81d9f724cdbc533d143
https://doi.org/10.1088/0031-9155/30/6/008

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PHOTODYNAMIC INACTIVATION OF LYSOZYME BY EOSIN

Autor: A. G. Kepka, L. I. Grossweiner

Publikováno v: Photochemistry and Photobiology. 18:49-61

— It has been demonstrated that singlet oxygen is the major oxidizing entity in the photo-dynamic inactivation of hen egg white lysozyme by eosin, using D2O to enhance the solvent-induced decay lifetime, and azide ion as a specific scavenger. Two r

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5add74746501a120acfb09e07376925b
https://doi.org/10.1111/j.1751-1097.1973.tb06392.x

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Spectral sensitization of zno thin films with organic dyes

Autor: S.J. Dudkowski, L. I. Grossweiner, A. G. Kepka

Publikováno v: Journal of Physics and Chemistry of Solids. 28:485-493

Photoconductive couples in which a ZnO thin film is placed in surface contact with a layer of aggregated organic dye have been investigated under low-intensity illumination and with flash lamp methods. For the dyes studied (crystal violet, methylene

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bf3b124ed5f11ca8c8b5c10a4f7e1bb1
https://doi.org/10.1016/0022-3697(67)90318-6

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Whole-thorax radiation lethality in penicillamine-treated mice

Autor: W F, Ward, A, Shih-Hoellwarth, H G, Pearlman, A G, Kepka

Publikováno v: Radiation research. 90(2)

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid________::e4838e1211573ad0785540aab564ccd9
https://pubmed.ncbi.nlm.nih.gov/7079466

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The generalized geometry of eye plaque therapy

Autor: A G, Kepka, P M, Johnson, R W, Kline

Publikováno v: Medical physics. 15(3)

A calculation is described that enables the rapid assessment of dose rate at various points of interest within the eye (lens, optic nerve, etc.) for the treatment of choroidal melanoma by plaque therapy. 125I seeds are used as the radiation source. T

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid________::66d46dad8e56908e252cea183f71accd
https://pubmed.ncbi.nlm.nih.gov/3405140

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