방사선지표식물 자주달개비를 이용한 환경방사선 감시

김진규,김원록,이영근,김재성,송희섭,정철영,김기남,서원선,홍광표 ( Jin Kyu Kim,Won Rok Kim,Young Keun Lee,Jae Sung Kim,Hi Sup Song,Cheorl Young Jeong,Ki Nam Kim,One Sun Suh,Kwang Phyo Hong ) 한국환경생물학회 1998 환경생물 : 환경생물학회지 Vol.16 No.2

Tradescantia in BNL 4430 is a hybrid clone heterozygous for its flower color and extremely sensitive to ionizing radiation. Such a fact made people around nuclear power plants be interested in Tradescantia, a botanical tester of radiation effects. The pur pose of this study is to provide the botanical supplement to physical radiation monitor systems and also to ascertain biological safety regarding environmental radiation around nuclear power plants. Flowers collected periodically from three Tradescantia gardens (in Youngkwang NPP Jeonsigwan. City office and KAERI. respectively) were scored for pink mutation frequencies in stamen hair cells. Pink mutation frequencies in the study area were in the range of 0.82∼1.14. which were slightly lower than the annual mean background mutation frequency of 1.16. Statistical analysis of scoring data showed that there was no significant difference between three Tradescantia gardens (p>0.05). From the result, the environmental radiation level around Youngkwang nuclear power plant can be said biologically safe. Further study for verifying safety will make a role for improving public acceptance related to the peaceful use of nuclear power.

중성자와 감마선 중복 조사가 자주달재비 분홍돌연변이율에 미치는 영향

김진규,이영근,김재성,신해식,현성희,Kim, Jin-Kyu,Lee, Young-Keun,Kim, Jae-Sung,Shin, Hae-Shick,Hyun, Soung-Hee 대한방사선방어학회 2000 방사선방어학회지 Vol.25 No.2

The effects of combined irradiation of neutrons and ${\gamma}$-rays were analysed by means of Tradescantia stamen hair (TSH) assay. Potted plants were irradiated with $0{\sim}2$ Gy of ${\gamma}$-rays. For the combined treatments, the plants were irradiated with neutrons from $^{252}Cf$ 24 hours before or after ${\gamma}$-irradiation. The slopes of dose-response curves were 5.98, 6.17 and 7.48, in ${\gamma}$-rays, ${\gamma}$-rays+neutrons, and neutrons+${\gamma}$ -rays irradiated groups, respectively. The biological efficacy of radiations in the induction of pink mutations increased by 25% in neutrons+${\gamma}$-rays irradiated group, while it increased by 12% in ${\gamma}$-rays+neutrons irradiated group. The combined irradiation with two kinds of radiations results in the different efficacy of radiation depending on the order of irradiations, which is of great importance in the related fields such as sterilization and radiotherapy. 자주달개비 식물체에 감마선과 중성자를 중복 조사하였을 패 나타나는 수술털(TSH) 분흥돌연변이율의 변화를 분석하였다. 감마선은 $0{\sim}2$ Gy의 범위에서 선량별 조사를 하였으며 중성자는 $^{252}Cf$ 선원으로부터 일정한 거리에 식물체를 배열하여 조사하였다. 감마선을 선량별로 조사한 후 중성자를 조사한 때의 TSH 분홍돌연변이 감마선량-반응의 증가계수는 6.17로 감마선량-반응식의 5.98에 비해 12%의 방사선효율 증가를 초래했으며 중성자를 먼저 조사한 다음 감마선을 조사한 경우는 증가계수가 7.48로서 25%의 방사선 생물효율 증대가 나타났다. 두 종류의 방사선 중복 조사시 조사방식의 선 후 조합에 따른 방사선생물효율 증대가능성은 멸균 또는 세포사멸 등 방사선을 긍정적으로 이용하는 분야에 있어 매우 중요한 의미가 있다.

확장 해밀턴 이론에 근거한 탄점소성 시스템의 시간유한요소해석법

김진규,Kim, Jin-Kyu 한국공간구조학회 2014 한국공간구조학회지 Vol.14 No.1

In order to overcome the key shortcoming of Hamilton's principle, recently, the extended framework of Hamilton's principle was developed. To investigate its potential in further applications especially for material non-linearity problems, the focus is initially on a classical single-degree-of-freedom elasto-viscoplastic model. More specifically, the extended framework is applied to the single-degree-of-freedom elasto-viscoplastic model, and a corresponding weak form is numerically implemented through a temporal finite element approach. The method provides a non-iterative algorithm along with unconditional stability with respect to the time step, while yielding whole information to investigate the further dynamics of the considered system.

자주달개비 화분모세포 미세핵 생성률의 방사선량-반응 관계

김진규,송희섭,현성희,Kim, Jin-Kyu,Song, Hi-Sup,Hyun, Soung-Hee 대한방사선방어학회 1999 방사선방어학회지 Vol.24 No.4

본 연구는 이온화 방사선이 자주달개비 화분모세포의 미세핵 생성에 미치는 영향을 분석하여 선량-반응 관계를 수립하고자 수행되었다. 자주달개비의 화분모세포는 감수분열을 통하여 4개의 꽃가루로 발전되는 생식세포로서 분열과정 중에 방사선에 노출되면 염색체 조각이 분리되어 미세핵을 형성한다. 감마선 선량이 증가함에 따라 미세핵 생성률도 증가하였으며 특히 50 cGy까지의 선량범위에서 선량별 미세핵 생성률의 최대값은 뚜렷한 선량-반응관계를 보였다. 선량-반응 관계식을 통해 볼 때 1 cGy의 부가적 선량은 100 사분자당 최대 2개씩의 미세핵을 추가로 생성시키는 것으로 나타났다. 화분모세포 미세핵 생성률의 방사선 지표성은 생물학적 방사선량 감시를 위한 필수선결사항일 뿐 아니라 공해물질의 생체 위해성 검증, 수질과 토양의 건전성 평가 등에 대한 응용성을 갖고 있다. This study was carried out to investigate the radiation dose-response of micronucleus frequencies in Tradescantia pollen mother cells. The number of micronuclei increased in the tetrads as a result of chromosome deletion after irradiation. The maximal frequency of micronuclei showed a good dose-response relationship in the range of dose $0{\sim}50$ cGy. On the basis of the relationship, a dose of 1 cGy results maximally in two additional micronuclei in 100 tetrads. The radiation dose-response relationship of micronucleus occurrence is prerequisite to biological monitoring of radiations. The micronucleus assay can be applied to biological risk assessment of environmental toxicants, and to integrity test of water or soils of interest.

Artemia ( Class Crustacea ) 알의 부화에 미치는 이온화방사선의 효과

김진규,김원록,이영근,이창주,장화형 ( Jin Kyu Kim,Won Rok Kim,Young Keun Lee,Chang Joo Lee,Hwa Hyoung Chang ) 한국환경생물학회 1998 환경생물 : 환경생물학회지 Vol.16 No.2

Tradescantia in BNL 4430 is a hybrid clone heterozygous for its flower color and extremely sensitive to ionizing radiation. Such a fact made people around nuclear power plants be interested in Tradescantia, a botanical tester of radiation effects. The pur pose of this study is to provide the botanical supplement to physical radiation monitor systems and also to ascertain biological safety regarding environmental radiation around nuclear power plants. Flowers collected periodically from three Tradescantia gardens (in Youngkwang NPP Jeonsigwan. City office and KAERI. respectively) were scored for pink mutation frequencies in stamen hair cells. Pink mutation frequencies in the study area were in the range of 0.82∼1.14. which were slightly lower than the annual mean background mutation frequency of 1.16. Statistical analysis of scoring data showed that there was no significant difference between three Tradescantia gardens (p>0.05). From the result, the environmental radiation level around Youngkwang nuclear power plant can be said biologically safe. Further study for verifying safety will make a role for improving public acceptance related to the peaceful use of nuclear power.

Recovery from Damage after Administration of the Halophyte Extracts in Irradiated Rats

Jin Kyu Kim(김진규),Ji Hyang Kim(김지향),Yong Dal Yoon(윤용달) 한국생물공학회 2004 한국생물공학회 학술대회 Vol.2004 No.10

모자의료센터 연계를 위한 안전한 모자의료 이송체계 구축방안

김진규 ( Jin Kyu Kim ) 한국모자보건학회 2022 한국모자보건학회지 Vol.26 No.1

The collapse of perinatal healthcare is inevitable considering demographic factors and factors associated with medical resources due to the rapid decrease in the fertility rate in South Korea. In order to maintain the perinatal healthcare system, an appropriate healthcare deli very system must be established, but even the regional hospitals are facing a situation in which medical care is disabled due to a shortage of workforce. Government support is required to prevent the collap se of perinatal healthcare as public healthcare, emergency healthcare, and national essential healthcare system. In reality, it is necessary to strengthen perinatal healthcare through regionalization and to establish a maternal and child transport system. However, there are no guidelines for the perinatal transport system in South Korea, which also lacks professionalism, with a focus on the simple transportation of patients. Therefore, by integrating the transport systems of advanced countries and domestic efforts to improve transport systems, a realistic perinatal transport system establishment plan is proposed as follows. In order to strengthen the perinatal healthcare center under legal and institutional support, a professional workforce equivalent to that of the emergency healthcare center is ensured to organize a specialized perinatal transport team, and a perinatal emergency information center is established to form a safe tran sport linkage system. The perinatal emergency information center, which provides information on perinatal healthcare, linking and evaluating transportation between hospitals, should be incorporated into the emergency healthcare system, playing a pivotal role in the perinatal emergency healthcare management system. In addition, a dedicated transport team for perinatal healthcare should be formed for each region, transport guidelines for transport vehicles and equipment should be established, and legal and financial su pport should be provided to ensure safe perinatal healthcare transport. The prehospitalization level perinatal transport is configured as an integrated model of the 119 paramedics, aiming at quick transport. A team of perinatal special paramedics should be organized for each base to transport patients by spec ial vehicles, and information from the perinatal emergency information center should be used to select a transfer hospital and to receive medical guidance from a perinatal care physician during transport between hospitals. Transport between hospitals aims at safe transport with triangular transport. A perinatal t ransport team is in charge of transport between hospitals, and a specialist is on board in a special am bulance to provide medical care during transport between hospitals. Support from the government and local governments is absolutely necessary to strengthen the perinatal healthcare center and establish a perinatal transfer system, which must be realized through a pilot project with fee support.

MR 유체를 이용한 촉감구현장치의 설계 및 성능 평가

김진규(Jin-Kyu Kim),오종석(Jong-Seok Oh),한영민(Young-Min Han),최승복(Seung-Bok Choi) 한국소음진동공학회 2012 한국소음진동공학회 학술대회논문집 Vol.2012 No.10

This paper proposes a novel type of tactile device utilizing magnetorheological (MR) fluid which can be applicable for haptic master of minimally invasive surgery (MIS) robotic system. The salient feature of the controllability of rheological properties by the intensity of the magnetic field (or current) makes this potential candidate of the tactile device. As a first step, an appropriate size of the tactile device is designed and manufactured via magnetic analysis. Secondly, in order to determine proper input magnetic field the repulsive forces of the real body parts such as hand and neck are measured. Subsequently, the repulsive forces of the tactile device are measured by dividing 5 areas. The final step of this work is to obtain desired force in real implementation. Thus, in order to demonstrate this goal a neuro-fuzzy logic is applied to get the desired repulsive force and the error between the desired and actual force is evaluated.

차세대소형위성1호 태양전력조절기 비행모델의 환경 시험

김진규(Jin-Kyu Kim),임철우(Cheol-Woo Lim),신근수(Geun-Soo Shin),채장수(Jang-Soo Choi) 한국항공우주학회 2016 한국항공우주학회 학술발표회 논문집 Vol.2016 No.11

자주달개비 분석법을 이용한 카펫 방출 휘발성 유기화합물의 생물학적 영향 평가

김진규 ( Jin Kyu Kim ),신해식 ( Hae Shick Shin ),이영엽 ( Young Yup Lee ),이진홍 ( Jin Hong Lee ) 한국환경생물학회 2007 환경생물 : 환경생물학회지 Vol.25 No.3