Abstract:
:A biological dosimetry system for measuring solar UV-B light was established using bacteriophage T1 with E. coli Bs-1 as the host cell. Also a new physical UV-B dosimeter was developed which can specifically detect the UV spectral region related to inactivation of phage T1. Phage T1 is very stable in liquid suspension and it has adequate sensitivity to measure the intensity of solar UV-B. In addition, the survival of phage T1 responded linearly to UV fluences when plotted semi-logarithmic ally. Thus T1 seemed to have characteristic features making it suitable material as a biological dosimeter for sunlight. Outdoor experiments throughout one year showed that the mean amount of solar UV light in summer was about 6 fold larger than that in winter at Isehara (139.5 degrees E, 35.5 degrees N), Japan. A novel physical dosimeter which responds faithfully to UV-B light under atmospheric conditions on the ground was developed as well. The spectral response was very close to that of biological materials. Readings of this UV-B dosimeter could be converted into the efficiency of sunlight upon biological materials. This instrument is compact; it can also be used as an erythemal dosimeter.
journal_name
J Radiat Resjournal_title
Journal of radiation researchauthors
Furusawa Y,Suzuki K,Sasaki Mdoi
10.1269/jrr.31.189subject
Has Abstractpub_date
1990-06-01 00:00:00pages
189-206issue
2eissn
0449-3060issn
1349-9157journal_volume
31pub_type
杂志文章abstract::Preliminary results of the Polish epidemiology study on eye lens opacities among interventional cardiologists (ICs), based on the methodology proposed by ELDO (epidemiological studies of radio-induced cataracts in interventional cardiologists and radiologists: methodology implementation), are presented. The aim of the...
journal_title:Journal of radiation research
pub_type: 杂志文章
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更新日期:2016-07-01 00:00:00
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journal_title:Journal of radiation research
pub_type: 杂志文章
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更新日期:1989-06-01 00:00:00
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journal_title:Journal of radiation research
pub_type: 杂志文章,评审
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更新日期:1991-03-01 00:00:00
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pub_type: 杂志文章,多中心研究
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abstract::Several models for the action of mixed irradiation with two types of radiation have been proposed in the last two decades, although the superiority or inferiority of these models is not completely elucidated. However, mixed irradiation is sometimes composed of more than two types of radiation, and for this type of mix...
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pub_type: 杂志文章
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abstract::The rejoining efficiency of double-strand breaks (DSBs) was quantified by a DNA fragment-size analysis in tobacco protoplasts and CHO-K1 cells following gamma-ray irradiation in order to compare DNA reparability of higher plants with mammals. Results showed that the DSB rejoining efficiency of tobacco protoplasts is d...
journal_title:Journal of radiation research
pub_type: 杂志文章
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journal_title:Journal of radiation research
pub_type: 临床试验,杂志文章,随机对照试验
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更新日期:2004-06-01 00:00:00
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journal_title:Journal of radiation research
pub_type: 杂志文章
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更新日期:2012-01-01 00:00:00
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journal_title:Journal of radiation research
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更新日期:2015-09-01 00:00:00
abstract::Chronic irradiation with low-dose-rate 137Cs-γ rays inhibits the differentiation of human neural progenitor cells and influences the expression of proteins associated with several cellular functions. We aimed to determine whether such chronic irradiation influences the expression of proteins associated with PC12 cells...
journal_title:Journal of radiation research
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更新日期:2017-11-01 00:00:00
abstract::The purpose of this study was to investigate the radiosensitizing effect of geldanamycin (GA), an inhibitor of heat shock protein 90, on tumour cells and normal cells. We tested the effect of a combination of GA and radiation on cell survival, PI3K/Akt-related proteins and apoptosis induction. GA sensitized tumour cel...
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pub_type: 杂志文章
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journal_title:Journal of radiation research
pub_type: 杂志文章
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更新日期:2020-03-23 00:00:00
abstract::Resveratrol has received considerable attention as a polyphenol with anti-oxidant, anti-carcinogenic, and anti-inflammatory effects. Radiation is an important component of therapy for a wide range of malignant conditions. However, it causes damage to normal cells and, hence, can result in adverse side effects. This st...
journal_title:Journal of radiation research
pub_type: 杂志文章
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pub_type: 历史文章,杂志文章
doi:10.1269/jrr.47.b31
更新日期:2006-01-01 00:00:00
abstract::The aims of present study were to evaluate the efficacy of combining sunitinib with ionizing radiation (IR) on endothelial cells in vitro and in vivo. Human umbilical vein endothelial cells (HUVECs) were exposed to IR with or without sunitinib pretreatment. Apoptosis assay and cell cycle distribution were analyzed by ...
journal_title:Journal of radiation research
pub_type: 杂志文章
doi:10.1269/jrr.10013
更新日期:2011-01-01 00:00:00
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journal_title:Journal of radiation research
pub_type: 杂志文章
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pub_type: 杂志文章
doi:10.1269/jrr.32.supplement2_132
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更新日期:2014-07-01 00:00:00
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pub_type: 杂志文章
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更新日期:2013-07-01 00:00:00
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更新日期:2004-12-01 00:00:00
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journal_title:Journal of radiation research
pub_type: 杂志文章
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更新日期:2019-10-23 00:00:00