• Title, Summary, Keyword: Radio-environmental indicator

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Development of Dark-striped Field Mice, Apodemus agrarius, as a Biological Dosimeter in a Radio-ecological Monitoring System 3. Radio-sensitivity between A. agrarius and ICR Mice

  • Kim Hee-sun;Nishimura Y.;Jin Young-Woo;Kim Chong-Soon
    • Proceedings of the Korean Radioactive Waste Society Conference
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    • pp.513-517
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    • 2005
  • This study examined the possibility of using striped field mice as a biological dosimeter or indicator for the environmental radio-surveillance. For this study, the external morphological characteristics and isoenzymic types of dark-striped field mice were studied after they were captured. Among the morphological external characteristics, the dark-brown coat, dark back stripe, head-to-tail length, tail length, and ear length matched the taxonomical characteristics of dark-striped field mice. The analyses on L-lactate dehydrogenase, aspartate aminotransferase, and malate dehydrogenese revealed that one species of dark-striped field mice, called Apodemus agrarius, was inhabitated throughout a wide range of Korea. On the other hand, A. agrarius and ICR mice to analyze their survival rate and frequency of micronuclei in peripheral polychromatic erythrocytes after irradiation (0, 0.5, 1, 3, 5, 7, 9 Gy). The $LD_{50/30}$ of A. agrarius and ICR mice were approximately 5 Gy and 7Gy, respectively. The results of the study reveal that wild A. agrarius have a high potential as a biological monitoring system to determine the impact of radiation effect in areas such as those within the vicinity of nuclear power plants.

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Organ Weights and Splenocytic Apoptosis in γ-irradiated Korean Dark-Striped Field Mice, Apodemus Agrarius Coreae (방사선 조사된 국내 야생 등줄쥐 (Apodemus agrarius coreae) 장기무게 및 비장세포 세포고사)

  • Joo, Hyunjin;Choi, Hoon;Yang, Kwang-hee;Keum, Dong-kwon;Kim, Hee sun
    • Journal of Radiation Protection and Research
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    • v.40 no.3
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    • pp.168-173
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    • 2015
  • The present investigation was planned to estimate potential possibility of striped field mice, Apodemus agrarius coreae (A. a. coreae), as a biological dosimeter in radio-environmental ecology. We bred captured wild A. a. coreae at laboratory and classified taxonomically based on external, cranial and tooth characters. Organ weights and splenocytic apoptosis were observed in order to establish a basic data on radiation biology of A. a. coreae (male, 40 weeks old). The biological effects was observed at 24hrs following irradiation (doses : 0, 0.5, 1, 2 Gy, dose rate : $0.8Gymin^{-1}$, $^{137}Cs$). Only thymus weights was significantly decreased. Splenocytic apoptosis was increased after irradiation. But splenocytic apoptosis was decreased in 0.5 Gy ${\gamma}$-irradiated mice compared to those of 0, 1, 2 Gy (P < 0.05). These data suggested that events in thymus and spleen of Korean dark-striped field mice, A. a. coreae THOMAS, could be a potential radio-biological indicator in human environments.

A Survey on the Aged Consumers' Needs for an Elderly Friendly and Sensitive Bathtub Alternative (노인 친화적 감성용 욕조 대안에 대한 노인 소비자의 요구 및 평가)

  • Choi, Byungsook;Kwon, Tae-Kyu
    • Journal of the Korean housing association
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    • v.24 no.6
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    • pp.41-49
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    • 2013
  • This study finds out the aged consumers' needs on the developing elderly friendly and sensitive bathtub. This bathtub focuses on enhancement of multi-senses and enhancement of health, safety & convenience during bath. The enhancing multi-senses would have four functions; therapy with color and aroma, the massage with micro water bubbles, the visual and auditory with TV & cinema, and the auditory with music and radio. Also, enhancing others of bathtub would have seven functions; emergency bell, blood-pressure check system for health condition, water temperature indicator, keeping water warm, reading a book in that, and controlling of house entrance door and a getting the phone during bath. The aged consumers' needs find throughout a questionnaire survey, and 497 data was analyzed. The main results are as follow. They consider a full bath behavior as a healthcare. They have an intention to purchase or use the elderly and friendly bathtub, and they prefer using it in common facilities to using it at home. They highly need health related function of bathtub, which are massage (64.4%), blood-pressure check system (55.1%) and aroma therapy (45.7%). The emergency bell (67.0%), keeping water warm (62.2%), and water temperature indicator (49.7%), related to safety & information function of bathtub, are needed. Also, they think tolerance for error and low physical effort in bathtub design alternative, opening door and inside sitting support, to be important.

Radio-sensitivity of Dark-striped Field Mice, Apodemus agrarius, as a Biological Dosimeter in Radio-ecological Monitoring System (환경 방사선 생물학적 감시 지표로서 야생 등줄쥐의 방사선 감수성)

  • Kim, Hee-Sun;Nishimura, Y.;Kim, Chong-Soon
    • Journal of Nuclear Fuel Cycle and Waste Technology(JNFCWT)
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    • v.4 no.1
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    • pp.25-32
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    • 2006
  • This study examined the possibility of using dark-striped field mice as a biological indicator for the environmental radio-surveillance. For this study, dark-striped field mice were caught from five areas of Kyonggi, Kyongsang, Chungchong and Cholla provinces. The external morphological characteristics and isoenzymic types of dark-striped field mice were studied after they were captured. Among the external morphological characteristics, the dark-brown coat, dark back stripe, head-to-tail length, tail length, and ear length matched the taxonomical characteristics of dark-striped field mice. The analyses on L-lactate dehydrogenase, aspartate aminotransferase, and malate dehydrogenese revealed that one species of dark-striped field mice, called Apodemus agrarius, was inhabitated throughout a wide range of Korea. On the other hand, the frequency of micronuclei in peripheral polychromatic erythrocytes to survived mice after irradiation also analyzed. The LD50/30 of A. cgrarius and ICR mice were approximately 5 Gy and 7.9Gy, respectively. The results of the study reveal that wild A. asrarius have a high potential as a biological monitoring system to determine the impact of radiation in areas such as those within the vicinity of nuclear power plants.

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