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김숭평,장우양,최승평,박복남 조선대학교 원자력연구소 1990 原子力硏究 Vol.4 No.-
Synthetic zeolite A was prepared by reaction domestic Hadong Kaolin with sodium hydroxide solution and the sorption behavior of some typical fission products such as Sr, Ba, Ca on zeolite A were studied. It was observed that ion exchange capacities for cry stalline zeolite A were very effective. The selectivity series obtained from ion exchange standard Gibbs free energies were found to be Sr >Ba>Ca
金崧平,趙哲衡,金二炫 朝鮮大學校 工科大學 1974 論文集 Vol.3 No.-
It was found that almost all amount of K₂SO₄in uncalcined alunite was extracted in the forms of K₂SO₄(NH₄)₂SO₄mixture in proper concentration (7∼8mol) of ammonia water. This process was attempted to extract the potash ammonia ferlitizer fron the uncalcined mt. ok mae alunite ore under appopriate raction temperature and react-on time. The indastrial manufactuing methods of the potsh-ammonia mixtnre fertilizer are as follows; (1) The appliable reaction temperatare by the experimental data, was 230∼240℃ (2) The optimum time applied to the reaction was 3 to 4 hoars.
A Study on the Oceanic Diffusion of Liquid Radioactive Effluents based on the Statistical Method
Kim,Soong-Pyung,Lee,Goung-Jin 대한방사선 방어학회 1998 방사선방어학회지 Vol.23 No.1
영광 원전 지역에 적용될수 있는 액체 방사성 물질의 확산 모델을 개발하였다. 영광에서의 해양 확산조건은 매우 복잡하기 때문에 수치적 모델을 적용하는 것은 매우 어렵다. 따라서 비교적 단순하면서도 신뢰성 있는 미규제 지침 1.113에서 제시한 통계적 모델을 적용하였다. 이를 통해, 발전소 운전조건이나, 피폭경로에 따른 희석 인자를 계산할 수 있는 컴퓨터 코드를 개발하였다. 액체 방사성 물질의 확산에 대해서, 혼합 범위를 따라 근거리 혼합 모델과 원거리 혼합 모델로 구분하여 모델을 개발하였다. 근거리 혼합 현상은 부력과 초기 운동량 및 난류에 의해 결정된다. 원거리 혼합에서는 대기 중의 구름확산과 유사하게 가우시안푸륨 모델을 적용할 수 있다. 서로 다른 피폭 경로에 대해 물리적 타당한 적분을 수행함으로서, 경로에 따른 희석인자를 구할 수 있었다. 개발된 모델을 사용하여 계산한 결과에 의하면, 현생 영광 ODCM에 사용되는 희석인자는 상당히 과평가되어 있음을 알 수 있다. A diffusion model of radioactive liquid effluents is developed and applied for YGN NPP's site, based on the Gaussian plume type model. Due to the complexity of oceanic diffusion characteristics of YGN site, a simple and reliable statistical model based on Reg. Guide 1.113 is developed. Also, a computer code package to calculate dilution factors as a function of plant operation conditions and pathway of radioactive materials. A liquid effluents diffusion model is developed by dividing the diffusion range into two categories, i.e., a near field mixing region and a far field maxing region. In the near field, the initial mixing is affected by a buoyance force, a high initial turbulence and momentum which is characterized by a plant operation condition and environmental conditions. The far field mixing is similar to gaseous effluents diffusion. So, beyond the near field region, welknown Gaussian plume model was adopted. A different area averages of Gaussian plume equation was taken for each radioactive exposure pathway. As a result, we can get different dilution factors for different pathways. Results shows that present dilution factors used for YGN ODCM is too much overestimated compared with dilution factors calculated with the developed model.
An Improvement on the Analysis Techniques of Environmental Radioactivity Around Nuclear Power Plants
Kim,Soong-Pyung,Chae,Gyung-Sun,Chung,Won-Kwan 대한방사선 방어학회 1995 방사선방어학회지 Vol.20 No.1
환경방사능 분석기술은 원자력시설의 가동중 정상 및 비정상 상태시 이상판단과 지역특성에 따른 주변환경 방사능의 특성 및 거동파악 등을 하는데 필요한 기술로 원전 가동전,후 환경 방사능량을 비교함으로서 방사능 오염 및 변화상황을 파악할 수 있다. 국내에는 현재 관련법에 따라 규제기관 및 관련기관에 의한 환경감시가 계속되어오고 있으나 분석기술에 대한 한국규격이 신뢰성이 떨어지고 있다. 따라서 토양시료에 대한 감마핵종 분석에 한정하여 기수행된 측정방법 및 결과 등을 비교분석하므로서 원전주변 환경방사능 감시목적에 적합한 분석기술의 신뢰도 향상 및 상대오차율 최소화 방안을 도출하였다. An estimate of a change in radioactivity's circumstances around the nuclear power plant is validated with the results of the radioactivity measurements are compared. In this study, to further enhance the reliability of the results obtained form the environmental radioactivity measurements and analysis around the nuclear power plants that have been carried out up to the present. In the korea standard, there is the technical analysis guide for general stable chemical element's, but there is not the technical analysis guide for the radio-nuclei, therefore the environmental sample collection, the pretreatment of the sample and radionuclide analysis in the sample, the result's of the environmental radioactivity measurements by each organization, etc. are different. It is not sufficient for the database to forecasting a change in radioactivity's circumstances. A comparative study of collection and pretreatment techniques for the soil sample, the results by comparison, the method of minimizing the relative error are proposed. At one side of sample collection, there are going to considered that the surroundings of sample collection like the lay of the land, the provision of the selection standard for the area and pathway of radionuclide adhesion, the coherence of sample collection, etc.. at another side of pretreatment of the sample and measurement in the case of soil sample, how to do homogeneously the soil particle size and the standard tools, i.e. kinds of meshes, must to be selected.
宋連浩,金崧平,趙哲衡 朝鮮大學校 1976 綜合論文集 Vol.1976 No.-
Alunite, low-grade and clay are more amenable in acid extraction than in a alkaline treatment; the aluminum salts resulting from an acid leach, however, are always confronted with iron-salts. At the same time it has been difficult to seperate aluminum salts from iron salts. Thus, any acid process for the production of alumina is being confronted with the problem of firstly seperating the iron and aluminum salts formed during extraction of the ore from aluminum salts. The seperation of one from the water-soluble salts can often be achieved by introducing the system to organic solvent wherein one of the salts might be insoluble leading to effective, selective removal of the component. The fact that aluminum sulfate can well be precipitated from its aquous solution through the addition of ethyl alcohol and the marked solubility of ferric sulfate as well as ferrous sulfate in this same organic solvent is proved. The experimental data to note are as follows; 1. The optimal concentration of EtOH water was 60~70%. 2. The optimal EtOH-to-solution ratio was 250%. 3. The reaction time and temperature had no affection.