우라늄광 부근에서 우라늄의 토양 및 식물체중 함량과 주민들에 의한 체내 집적량추정

김태순,유장걸,송기준 한국농화학회 1979 Applied Biological Chemistry (Appl Biol Chem) Vol.22 No.4

The soils and plants were sampled from 26 sites of Deogpyeongri, Goisangun, which had been found to be one of the uranium deposit areas. Uranium levels of the samples were determined and the amount of uranium intake by the residents through the food-chains was estimated. The average uranium concentration of Deogpyeongri soils was 15.5ppm with a range of from 4.9 to 43.6ppm showing rather higher values than those of control area, Yangjugun and Icheongun, Gyeonggi-do. The average uranium content of the plant samples from Deogpyeongri was 0.69ppm, about twice the uranium concentration of the control samples. The daily intake of uranium by an adult lived on the agricultural food stuffs produced in Deogpyeongri, was estimated to be about 247㎍, eqivalent to 0.83×10^(-4)μCi, which is much higher activity compared to the daily intake cf uranium by New York citizen, 1.3㎍. However the calculated uranium level accumulated in the human body of Deogpyeong area was 2.03×10^(-4)μ which is still lower than 0.2μCi, the maximum permissible burden in total body recommended by the ICRP.

△ J 적분의 경로독립성에 관한 연구

김태순,박재학,윤기봉 한국산업안전학회 1996 한국안전학회지 Vol.11 No.2

In this study we simulate the fatigue test of a compact tension specimen and obtain the displacements, stresses and strains by using the finite element method. And we examine the path independency of ΔJ integral values and compare it with ΔJ integral values calculated from load-load line displacement curve. From the results of this study, we can find that ΔJ integral show the path independence for saturated materials. We can also find that the path independency of ΔJ is not satisfied when different material is assumed near the crack tip, but the difference in ΔJ is small. And ΔJ integral values calculated from load-load line displacement is very analogous with those from integration path but always have lower values than those from integration paths. In the case of crack closing, we found that ΔJ integral values from load-load line displacement should be calculated with the load increment values based on the crack opening point. The unsaturated material is also simulated and its ΔJ shows different values according to the path, but the difference is small.

설계수명 60년을 고려한 원자력발전소 주증기격리밸브의 피로수명 평가

김태순,이도환,김대수 한국에너지학회 2019 한국에너지공학회 학술발표회 Vol.2019 No.10

좌굴강도 측정을 통한 핵연료집합체 지지격자의 영구변형 특성 평가

김태순 한국에너지학회 2022 한국에너지공학회 학술발표회 Vol.2022 No.10

원자력발전소 핵연료집합체 지지격자의 비선형 강성 측정

김태순 한국에너지학회 2022 한국에너지공학회 학술발표회 Vol.2022 No.10

원자로 직접주입노즐의 피로평가에 미치는 응력집중계수의 영향

김태순,이재곤 한국안전학회 2010 한국안전학회지 Vol.25 No.6

A fatigue damage caused by cyclic load is considered as one of the important failure mechanisms that threaten the integrity of structures and components in a nuclear power plant. In ASME code section III NB, the fatigue analysis procedure and standard S-N curves for the class 1 components are described and these criteria should be met at the design step of components. As the current ASME S-N curves are based on the very conservative assumptions such as a local stress concentration effect, immoderate transient frequencies and a constant Young's modulus, however, they can not precisely address the fatigue behavior of components. In order to find out the technical solution for these problems, a number of researches and discussion have been carried out continuously at home and abroad over the decades. In this study, detailed fatigue analyses for DVI nozzle with various mesh density of finite elements were performed to evaluate effect of stress concentration factors on the fatigue analysis procedure and the excessive conservatism of stress concentration factors are confirmed through the analysis results.

40K 을 이용한 답토양(沓土壤)의 가리(加里) 공급력 측정법 연구

김태순 한국농화학회 1972 Applied Biological Chemistry (Appl Biol Chem) Vol.15 No.2

Based on the concentration of ^(40)K naturally occurring radioisotope of potassium, a method for the determination of total potassium in soils and plants was developed. The method was extended to evaluate the potassium supplying power of soils by taking the ratio of exchangeable potassium to total potassium (K_(ex)/K_t), termed the potassium buffering capacity. Using this as index, it was observed that the release of potassium from soil follows the first order reaction. A linear relationship was found between the potassium buffering capacity and the release constant of potassium or mica content of the clay. Similarly the potassium buffering capacity was also closely correlated with total uptake of potassium by rice plant. Hence it is concluded that the method for determining of the potassium buffering capacity could be well applied to characterize the potassium availability of soils. The method for the determination of potassium is characterized by (1) The efficient measurement of the weak beta activity emissions from the samples, (2) identification of ^(40)K, (3) calculation of total potassium content using the proportional constant of ^(40)K of samples to that of the standard. Difference in the potassium supplying power of soils due to soil types was also evaluated with the use of this technique. The degree of the potassium supplying power was in the order of soil types as red-yellow podzolic and lateric soils, basaltic materials(Rvd)$gt; low-humic gley and alluvial soils, alluvial plains and flood plains(Apa)$gt; low-humic gley soils, nearly level to sloping local alluvial plains and slopes(Afb)$gt; low-humic gley and alluvial soils, fluvio-marine plains (Fma).

청평.보성강댐 방류량산정 개선을 위한 수리모형 실험연구

김태순,배봉원,여홍구,강준구,김성중,Kim, Tae-Sun,Bae, Bong-Won,Yeo, Hong-Gu,Gang, Jun-Gu,Kim, Seong-Jung 한국수자원학회 2013 물과 미래(한국수자원학회지) Vol.46 No.10

소고기이력제가 기술수용모델에 미치는 영향

김태순,천덕상,김진성 한국외식경영학회 2013 외식경영연구 Vol.16 No.5

This study traces the history of the food system based on these variables concentrated product producers, food processors, food retailers and, ultimately, food sellers to provide consumers information about Food by food traceability system to engage in safe food to provide useful information due to the implications. As a result of this study, First analysis, food quality, traceability of information, ease of information, and social impact analysis, rising to more TAM was higher fitness. Second, information on food quality, traceability, ease of information, and increased visibility and usability TAM showed higher. Third, the food quality, traceability of information, ease of information, the higher the reliability increased TAM showed holders. Fourth, the technology acceptance model, the higher the relevance and reliability showed increased usability. Fifth, the technology acceptance model, fitness, flexibility, and reliability for increased use of food traceability systems have been verified to increase. 본 연구에서 이력추적시스템의 지속적인 이용과 확산에 있어 제품의 생산 , 식품 가공, 식품 유통 업체와 인체에 유용한 정보를 제공하기 위해 식품이력추적시스템의 기술수용모델인 적합성, 유용성, 신뢰성 등의 변인이 이용의도와 이용도에어떠한 영향을 미치는지를 파악하여 농축산물생산자, 식품가공업체, 식품유통업체그리고 최종적으로 식품판매자가 소비자에게 제공하는 식품정보에 대하여 식품이력추적시스템을 이용하여 안전한 식생활을 영위하는데 따른 유용한 정보와 시사점을 제공하고자 하였다. 본 연구의 결과로 첫째, 식품이력추적시스템의 정보품질, 정보용이성, 사회적영향이 상승할수록 기술수용모델인 적합성이 높아지는 것으로 분석되었다. 식품이력추적시스템에서 제공되는 정보의 품질은 식품의 정보를 믿을 수 있으며, 식품이력추적시스템을 통하여 다양한 식품정보를 획득할 수 있었으며 정보용이성은 식품을 구입하는 소비자들이 식품이력추적시스템을 쉽게 이용할 수 있게 하여, 안전한 식품을 구매하는 과정에서 구매의사결정에 도움이 되는 것으로 나타났다. 둘째,식품이력추적시스템의 정보품질, 정보용이성, 그리고 가시성이 높을수록 기술수용모델인 유용성이 높아지는 것으로 나타났다. 셋째, 식품이력추적시스템의 정보품질, 정보용이성이 높을수록 기술수용모델인 소지자의 신뢰성이 높아지는 것으로나타났다. 넷째, 기술수용모델의 적합성과 신뢰성이 높을수록 유용성이 높아지는것으로 나타났다. 이러한 분석결과는 식품이력추적시스템이 제공하는 데이터를 소비자 읽기 쉽고 이해가 가능한 형식으로 제공된다고 할 수 있다. 다섯째, 기술수용모델의 적합성, 유용성, 신뢰성이 증가할수록 식품이력추적시스템에 대한 이용의도는 증가하는 것으로 검증되었다.

8체질별 식품의 유익여부 관계 분석

김태순,이서현,이석훈 한국자료분석학회 2017 Journal of the Korean Data Analysis Society Vol.19 No.6

As interest in health and quality of life has increased, interest in the constitution classification, which leads to a dietary regimen according to the constitution and constitution, is increasing. In constitutional medicine, diagnosis and treatment are differently applied according to the constitution that is born congenitally, and foods consumed in daily life are also classified into beneficial food and harmful food. However, the criteria for classifying the benefits and harms of food have not yet been scientifically clarified. The purpose of this paper is to predict the degree of beneficial effects of foods in the 8-constitution points of view using the information only on medical and nutritional characteristics of foods which can be obtained objectively and easily. As a gold standard, we use the information on the constitutional regimens proposed by the 8-constitution experts. Decision tree, ensemble model, logistic regression model, support vector machine, neural network model. It is expected that this will help to predict the benefit of food by constitution through food nutritional characteristics. 건강과 삶의 질에 대해 많은 관심을 가지게 되면서 체질 분류와 체질별 식이요법인 체질식에 대해서도 많은 사람들이 관심을 가지고 있다. 체질의학에서 체질은 선천적으로 타고나며, 체질별 치료와 예방을 다르게 함은 물론이고 일상에서 섭취하는 식품도 유익한 식품과 해로운 식품으로 구분하여 제시한다. 그러나 식품의 유익함과 해로움의 기준은 과학적으로 명확히 밝혀졌다 말하기는 힘들다. 본 논문은 체질에 따라 유익함과 해로움에 영향을 미치는 식품의 한의학적, 영양학적 특성으로 유익여부를 예측해 보고자 한다. 구체적으로는 8체질의학에서 제시하는 체질별 섭생표를 기준으로 체질별 유익하고 유익하지 않은 식품으로 구분하고 의사결정나무와 앙상블 모형, 로지스틱 회귀 모형, 서포트 벡터 머신, 신경망 모형을 통하여 체질별 정확률을 살펴보았다. 이를 통해 식품 영양학적 특성을 통한 체질별 식품의 유익여부를 예측하는데 도움이 되기를 기대한다.