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- 저자 : 承健男 (검색결과 5 건)
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承健男 대구보건대학 1978 대구보건대학 論文集 Vol.4 No.-
with the progress of transport facilities or that pf industry, the number of trafic accidents or factory accidents has increased. Today, no less than several cases of head-trauma are btought to hospital a day. In the radiographing such cases, it is necessary to put a patient on the must suitable position as soon as possible, giving no pain to the patient. Therefoe, the autphy of the patient on a Therefore, the authorsmade for trial a simple X-ray apparatus in order to take x-ray photography of the patient on a stretcher. This apparatus was found to be able to be used for anterior roentgenography, Towne's radiography and encephaloarteriography.
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承健男,朴成培 대구보건대학 1977 대구보건대학 論文集 Vol.3 No.-
The gonad exposure dose of radiation in a chest radiography is fat lower than that in other radiographies such as a gastric fluoroscopy, a cholecystgraphy, a. polvic roentgenography, &. C. however, carried out to the masses by the group examinations. the chest radiography predominates in the rate of the genetically significant dose of the nation. So I have recently developed a gonad protector. which can be operated easily and efficiently, in order to re duce the gonad exposure dose as well as possible and to drive away the citizens feeling of unrest about the radioactivity. In this paper I describe the protector and the experimental result of its protective effect.
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承健男 대구보건대학 1984 대구보건대학 論文集 Vol.8 No.-
복부 X-선 촬영시에 환자에 대한 피폭선량을 경감시키기 위하여 감도별 증감지와 관전압을 이용하여 실험하였으며 그 결과 다음과 같은 결론을 얻었다. 1. 증감지의 감도는 관전압이 증가됨에 따라 증가되었으며 증감지별로서는 special speed증감지가 우수하였고 special speed 증감지를 사용함으로서 medium speed 증감지 비해서 7.8배로 감도를 증가시킬 수 있었다. 2. 선예도는 관전압의 상승과 증감지의 감도에 반비례하였다. medium speed 증감지를 사용했을 때 감도와 선예도를 각각 100으로 기준을 잡으면 관전압 100 kv에서 special speed 증감지는 257로 증가되는데 비해서 선예도는 67.2로 나타났다. 3. 피폭선량을 표면선량으로 비교할 때에 비해서 100 kv에서 special speed증감지에서는 많은 피폭선량 감소를 보였다. 표면선량이 가장 적은 것은 관전압 100 kv에서 special speed 증감지를 사용할 경우로서 64 mR이고 다음은 역시 special speed증감지를 사용하여 120 kv에서 74 mR으로 나타났으며 medium speed 증감지와 80 kv에서는 663 mR로서 많은 피폭선량을 보여주고 있다. 그러므로 복부 X-선 촬영에서 가급적 고감도의 증감지를 사용하고 관전압은 100 kv이상으로 한다면 환자의 피폭선량을 경감시킬 수 있다는 실험결과를 얻었다. An experimental study for the reduction of exposure dose rate in abdominal vital organ roentgenography in plain film exposure with different screen was implemented and results were as follows : 1. With increasing volts in electricity the sensitivity of intensifying screen was increased accordingly therefore special high speed intensifying screen was the best quality for the reduction of dose rate in comparison of 80 kvp medium speed to 120kvp high speed which is more increased sensitivity in 7.8 times. 2. Sharpness was inversely proportional to the increased volts and sensitivity response to the intensifying screens. As of comparison in 100 of medium speed screens high speed screens become 69.2. 3. Exposed skin doses were resulted in 1/10 of reduction in skin dose in special speed high intensifying screens 100 kvp or more compare to the 8okvp medium speed one. From these results reducing skin dose rate in abdominal exposure of plain Roentgenogram should be utilized more in 100 kvp or more of high voltage and super sensitive hi& speed screens of intensification of exposure dose in abdomen.
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李瑛喜,承健男 대구보건대학 1974 대구보건대학 論文集 Vol.2 No.1
X-Ray fluorescence technique employing radioisotope source to stimulate characteristic X-Ray emission and non-dispersive method of X-Rat energy selection and it's measurement are described. These fluoresence analysis was carried out with (Sr+Y)^(90) as primary X-Ray source. For spectro-analysis, NaI(T1) scintillation detector, pulse height analyzer, X-Ray filter are applied. Pulse analysis technique was applied to glass and paint. It's appeared very typically as described. Pb-Sn alloy and Na₂Wo₄, BaCl₂, CuSo₄, solution were analysed with Al(1m m) filter. Accuracies of the ana1ysed solution were 0.02% for 1-1% CuSo₄, 0.05% for 5-15% Na₂Wo₄, and 0.05% for 2-10% BaCl₂ in counting time of one minute.
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A Study on X-Irradiated Liver Cells of Mice
Park, Sung Bae,Seung, Kon Nam 대구보건대학 1977 대구보건대학 論文集 Vol.3 No.-
最近까지 正常的인 마우스의 肝細胞에 있어서 polyploidization에 對해서는 잘 알려지지 않았는데 本 硏究에서 처음으로 subtype endopolyploidization(假稱)을 發見하게 되었다. 그리고 많은 學者들이 x-ray照射에 있어서도 300r 照射에는 細胞內의 異常을 別로 發見치 못했는데, 細胞學的인 側面에서의 變化와 300r 照射後 7日에는 이미 만들어진 glycogen은 다 消費해져 버리고 더 以上 glycogen 合成을 못함을 發見하게 되었다. The particular large hepatic cell of mice contains one to two subtype endopolyploid nuclei in normal situation. The morphological aberrations of the hepatic cells of which have been exposured at 300r x-irradiation were observed cytological aspect : glycogen biosynthetic area in the cytoplasm may has not synthesis further at seven days after the x-ray irradiation.
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