Japanese Journal of Health Physics
Online ISSN : 1884-7560
Print ISSN : 0367-6110
ISSN-L : 0367-6110
Search
Advanced search
OR
Browse
Search
Volume 23, Issue 4
Displaying 1-9 of 9 articles from this issue
Show all abstracts
    • |<
    • <
    • 1
    • >
    • >|
  • Pulmonary Deposition and Clearance of Inhaled or Instilled 198Au-Colloid in the Rat after the Induction of Pulmonary Delayed Type Hypersensitivity Reactions
    Yoshihisa KUBOTA, Sentaro TAKAHASHI, Hiroshi SATO, Yuji YAMADA, Osamu ...
    1988 Volume 23 Issue 4 Pages 295-302
    Published: 1988
    Released on J-STAGE: February 25, 2010
    DOIhttps://doi.org/10.5453/jhps.23.295
    JOURNAL FREE ACCESS
    Show abstractHide abstract
    The deposition and clearance of inhaled or instilled colloidal 198Au-particles were studied in rats with pulmonary lesions induced by delayed type hypersensitivity (DTH) reactions. The increased amount of radioactivity was detected in the lung associated lymph nodes and the kidney of DTH rats on day 4 after intratracheal instillation of 198Au-particles. The initial lung deposition of inhaled 198Au-particles in the lung lobes with DTH lesions was approximately 55% of normal lobes. Early mucociliary clearance of 198Au-particles was impaired in DTH rats. These results suggest that the deposition pattern and the subsequent movements of inhaled particles in the respiratory tract might be considerably influenced by pathologic conditions in the lung.
    View full abstract
    Download PDF (3374K)
  • Some Considerations on Cost-Benefit Analysis in the Optimization of Radiation Protection
    Proposals for Social Research Technique to Estimate Beta-Detriments
    Masahiro DOI, Yoshiyuki NAKASHIMA
    1988 Volume 23 Issue 4 Pages 303-308
    Published: 1988
    Released on J-STAGE: February 25, 2010
    DOIhttps://doi.org/10.5453/jhps.23.303
    JOURNAL FREE ACCESS
    Show abstractHide abstract
    To carry out Cost-Benefit Analysis in the optimization of radiation protection, first, we have to overcome the paradoxical problem in ethics, that is, how to convert radiological detriments into monetary value. Radiological detriments are composed of not only the objective health detriment (alpha-detriment) but also subjective non-health ones due to psychological stresses against radiological risks (beta-detriments).
    Nevertheless we can't neglect the problem of Cost-Benefit Analysis because of the fact that protectional costs are apt to be reduced as other fundamental production costs from the managemental point of view.
    The authors have proposed following two different situations concerning the treatment of radiological detriments in the decision-making processes for the optimization of radiation protection. That is,
    (1) Since protectional decision making processes for workers are parts of the total safety planning of the facility of interest, beta-detriments for workers should be discussed and determined in the labourmanagement negotiations.
    (2) In case of publics, subjective non-health detriments arise from the gap between radiation risks and radiation risk perception that can be clarified by social research techniques.
    In addition, this study has clarified criteria in planning of social researches for beta-detriments and constructed a theoretical model designed for these.
    View full abstract
    Download PDF (815K)
  • Diminution of Terrestrial Gamma Ray Exposure Rate due to Snow Cover
    Toshi NAGAOKA, Ryuichi SAKAMOTO, Kimiaki SAITO, Masahiro TSUTSUMI, Shi ...
    1988 Volume 23 Issue 4 Pages 309-315
    Published: 1988
    Released on J-STAGE: February 25, 2010
    DOIhttps://doi.org/10.5453/jhps.23.309
    JOURNAL FREE ACCESS
    Show abstractHide abstract
    In order to clarify the diminution characteristics of terrestrial gamma ray exposure rate due to snow cover, measurements were performed on the ground with and without snow cover. The diminution factors observed were 0.36-0.17 for 12-23g/cm2 of water equivalent of the snow cover. According to a calculation by the Monte Carlo method, the corresponding diminution factors were 0.32-0.16. They agreed well as a whole, while the fluctuation of the diminution factors based on the measured exposure rate were fairly large. The fluctuation is deemed to be due to the inhomogeneity in the distribution of the snow cover as well as the gamma ray field. The fluctuation is expected to decrease with increase in the degree of their homogeneity.
    View full abstract
    Download PDF (730K)
  • Morphological and Histochemical Changes by X-rays and Tritium in Mouse Sperm and the Possibility to Apply Them in the Risk Estimation of Health Physics
    Yowri UJENO, Koichi TAKIMOTO
    1988 Volume 23 Issue 4 Pages 317-321
    Published: 1988
    Released on J-STAGE: February 25, 2010
    DOIhttps://doi.org/10.5453/jhps.23.317
    JOURNAL FREE ACCESS
    Show abstractHide abstract
    The various changes occuring in sperm are often used to estimate the effects of toxic substances in the environment, for the reasons that sperm are the experimental materials concerning to the genetic effects and we can get them easily and repeatedly. As the environmental external ionizing radiation and radioactive elements in the environment are the factors to induce various effects on human body; it is likely to use sperm to estimate the effects of these factors on human body. The present experiment was carried out to evaluate whether the morphological or histochemical changes in sperm were of use to estimate the effects of radiation in the environment health physically, or not. X-rays and tritiated water were used in the present experiment. The observed effects in sperm were the reduction in sperm, morphological changes of sperm head, and the incidence of α-glycerolphophate dehydrogenase (α-GPD) deficient sperm. The results showed that the incidence of the α-GPD deficient sperm was the most suitable index to show the effects of ionizing radiation in three observed changes in sperm, because this change is hardly observed in the normal unirradiated mice and the incidence of α-GPD deficient sperm increased linearly till 1.5 Gy, that is, the relation was shown by the equation: y (%, incidence)=3.07×(Gy, dose).
    View full abstract
    Download PDF (531K)
  • Excess Radiation Doses in Budapest and Stockholm after Chernobyl Accident Estimated by Thermoluminescence Dosimeters
    Tadaoki YAMASHITA, Yoshitake YASUNO, Hiraku TAKEBE, Sohei KONDO
    1988 Volume 23 Issue 4 Pages 323-325
    Published: 1988
    Released on J-STAGE: February 25, 2010
    DOIhttps://doi.org/10.5453/jhps.23.323
    JOURNAL FREE ACCESS
    Download PDF (346K)
  • Characteristic of Cement Mortar as an Engineered Barrier for 137Cs
    Kenji SHIMOOKA, Shinichi TAKEBE, Yoshiki WADACHI
    1988 Volume 23 Issue 4 Pages 327-329
    Published: 1988
    Released on J-STAGE: February 25, 2010
    DOIhttps://doi.org/10.5453/jhps.23.327
    JOURNAL FREE ACCESS
    Download PDF (300K)
  • Evaluation of Relative Radiotoxicity on Tritiated Organic Compounds
    Hiroshi TAKEDA
    1988 Volume 23 Issue 4 Pages 331-342
    Published: 1988
    Released on J-STAGE: February 25, 2010
    DOIhttps://doi.org/10.5453/jhps.23.331
    JOURNAL FREE ACCESS
    Download PDF (1373K)
  • Management of TRU Waste
    Noboru MORIYAMA
    1988 Volume 23 Issue 4 Pages 343-352
    Published: 1988
    Released on J-STAGE: February 25, 2010
    DOIhttps://doi.org/10.5453/jhps.23.343
    JOURNAL FREE ACCESS
    Download PDF (1223K)
  • Notes from Radiation Workers (Vol. 23, No. 4)
    Ichiro SAKAMOTO
    1988 Volume 23 Issue 4 Pages 389-392
    Published: 1988
    Released on J-STAGE: February 25, 2010
    DOIhttps://doi.org/10.5453/jhps.23.389
    JOURNAL FREE ACCESS
    Download PDF (395K)
    • |<
    • <
    • 1
    • >
    • >|
feedback
 Top