Results 261 to 270 of about 263,492 (281)
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Dose-Response Relationship in the Yield of Radiation-Induced Free Radicals in Amino Acids
Physics in Medicine and Biology, 1963The electron spin resonance technique has been used to study the production of long-lived radicals in glycine, alanine, valine, aspartic acid and glutamic acid. The yield of radicals as a function of dose was measured, using as a source of radiation 14·3 MeV electrons at a very high dose rate.
J, ROTBLAT, J A, SIMMONS
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Health Physics, 2004
Occupational exposures are often recorded as zero when the exposure is below the minimum detection level (BMDL). This can lead to an underestimation of the doses received by individuals and can lead to biased estimates of risk in occupational epidemiologic studies.
Xiaonan, Xue +3 more
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Occupational exposures are often recorded as zero when the exposure is below the minimum detection level (BMDL). This can lead to an underestimation of the doses received by individuals and can lead to biased estimates of risk in occupational epidemiologic studies.
Xiaonan, Xue +3 more
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Journal of Photochemistry and Photobiology B: Biology, 2008
Vitamin D deficiency is a major health concern worldwide. Very little is understood regarding its production in the human body by exposure to UV radiation. In particular, we have no means of predicting how much vitamin D (cholecalciferol) will be produced in the skin after exposure to sunlight.
Olds, William J. +3 more
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Vitamin D deficiency is a major health concern worldwide. Very little is understood regarding its production in the human body by exposure to UV radiation. In particular, we have no means of predicting how much vitamin D (cholecalciferol) will be produced in the skin after exposure to sunlight.
Olds, William J. +3 more
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Radiation Protection Dosimetry, 2009
Using a single colour fluorescence in situ hybridisation technique, dose-responses were derived for a range of chromosomally aberrant cell types and categories of aberrations induced in peripheral blood lymphocytes by alpha-particle radiation and analysed in their first in vitro division.
E J, Tawn, H, Thierens
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Using a single colour fluorescence in situ hybridisation technique, dose-responses were derived for a range of chromosomally aberrant cell types and categories of aberrations induced in peripheral blood lymphocytes by alpha-particle radiation and analysed in their first in vitro division.
E J, Tawn, H, Thierens
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Tests of the Linear, No-threshold Dose-Response Relationship for High-Let Radiation
Health Physics, 1987It is pointed out that induction of lung cancer by exposure to Rn daughters, applied at high doses to miners and at low doses to exposures in homes, provides a very stringent and sensitive test of the linear, no-threshold dose-response relationship for high-LET radiation, because this relationship predicts that a substantial fraction of lung cancer ...
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Radiation and Environmental Biophysics, 2006
In previous studies we showed a marked increase in secretion of inflammatory cytokines TNFalpha and interleukin (IL)-1beta by mouse macrophages in response to different doses of ionizing radiation (IR). Here we show the stimulation of IL-12 and IL-18 secretion by mouse peritoneal macrophages after whole-body irradiation with exploration of the possible
Yu-Xing, Shan +4 more
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In previous studies we showed a marked increase in secretion of inflammatory cytokines TNFalpha and interleukin (IL)-1beta by mouse macrophages in response to different doses of ionizing radiation (IR). Here we show the stimulation of IL-12 and IL-18 secretion by mouse peritoneal macrophages after whole-body irradiation with exploration of the possible
Yu-Xing, Shan +4 more
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Radiotherapy and Oncology, 1984
One hundred and thirteen patients with advanced locoregional recurrent (77), residual (18) or primarily inoperable (18) colorectal carcinoma were treated with radiotherapy. Eighty-five patients had locoregional disease only and 28 had both local disease and distant metastases.
Overgaard, Marie +2 more
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One hundred and thirteen patients with advanced locoregional recurrent (77), residual (18) or primarily inoperable (18) colorectal carcinoma were treated with radiotherapy. Eighty-five patients had locoregional disease only and 28 had both local disease and distant metastases.
Overgaard, Marie +2 more
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Experimental Eye Research, 2011
The purpose of this study is to establish the dose response relationship for α-tocopherol protection of ultraviolet radiation (UVR) induced cataract in the rat. Four groups of 20 six-week-old albino Sprague Dawley rats received 5, 25, 50, and 100 IU/day α-tocopherol, whilst another group of 20 rats without any α-tocopherol feeding was the control group.
Jing, Wang +4 more
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The purpose of this study is to establish the dose response relationship for α-tocopherol protection of ultraviolet radiation (UVR) induced cataract in the rat. Four groups of 20 six-week-old albino Sprague Dawley rats received 5, 25, 50, and 100 IU/day α-tocopherol, whilst another group of 20 rats without any α-tocopherol feeding was the control group.
Jing, Wang +4 more
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The dose-response relationship for tumourigenesis by UV radiation in the region 311 – 312 nm
Journal of Photochemistry and Photobiology B: Biology, 1988Groups of hairless mice were irradiated daily with Philips TL01 UVB sources. This type of lamp has become available recently and was developed for UVB phototherapy of psoriasis. The TL01 emits radiation in a narrow band around 311-312 nm. Tumours developed on all animals.
Sterenborg, H. J. +2 more
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Dose—response relationship for radiation-induced translocations in somatic and germ cells of mice
Mutation Research/Fundamental and Molecular Mechanisms of Mutagenesis, 1977Dose--response curves (0--600 rad X-rays) for induced reciprocal translocations in bone-marrow cells and in spermatogonia (scored in spermatocytes) of the mouse were constructed. The obtained results suggest that factors influencing aberration yields in somatic cells, are similar to those in germ cells and strengthen the premise for qualitative ...
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