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이중에너지 전산화단층촬영술을 이용한 한국 정상성인의 척추골 무기물 함량측정
권재수 대한영상의학회 1989 대한영상의학회지 Vol.25 No.6
the attenuation values of the computed tomography were measured by a dual energy technique resulting in determination of the raw data of the region of interst. In our previous report CT values were correlated to the bone mineral concentration . Repositioning error was insignificant in our dual energy CT, We studied cortical mineral contents of L3 body in 120 healthy men and women. The results were as follows: 1. The bone mineral content on the mid-anterior portion of L3 vertebral body was highest in fifty decade of 304$\pm$27mg/cc in men and 288$\pm$22mh/cc in women. 2. The bone mineral content on the right postero-lateral portion of the L3 vertebral dody was highest value in fifth decade of 471$\pm$31mg/cc in men and 412$\pm$28mg/cc in women. On the left postero-lateral portion highest in fourth decade of 504$\pm$40mg/cc in and 438$\pm$42mg in women. 3. The mean values of the cortical bone mineral contents of L3 body were highest in fifth decade of 421$\pm$30mg/cc in men and in fourth decade of 365$\pm$34mg/cc in women
학술 논문 : 차량 개발 단계의 친환경설계 프로세스에 대한 연구
권재수 ( Jae Soo Gwon ),이준하 ( Joon Ha Lee ),홍성준 ( Sung Joon Hong ),조희욱 ( Hee Wook Cho ),홍병권 ( Byoeng Kwon Hong ),홍존희 ( John Hee Hong ) 한국전과정평가학회 2011 한국전과정평가학회지 Vol.12 No.1
Recently the environmental regulations require automobile makers not only to set up the open loop resource recycling system by promoting the material recycling and remanufacturing in disposal phase, hut also to apply Eco-design to their products in design phase. Hyundai Motor Group applies DfD(Design for Disassembly) and DfR(Design for Recycling) from conceptual design stage to production stage with the aspect of concurrent engineering. Eco-design guideline helps engineering designers to understand the necessity of Eco-design. The recyclability check sheets that include detailed design ideas classified by the polymer parts enable each designer to verify the product design by oneself. Furthermore, virtual recyclability inspection is performed in the digital product inspection stage which handles the virtual 3D modeling of products. All these activities became the official procedure in product development process. The DOROSY(Design fOr Recycling Optimizing SYstem) which is developed to help designers evaluate and modify their 3D design to generate the redesign alternatives and finally analyze the effect of environmental design change within a short time. Because DOROSY is based in CATIA which is familiar to engineering designers using the parametric designed template, engineering designer can apply the Eco-friendly idea to product design efficiently.
박원균,김승한,권재수,김연수,배언희,배재훈,이명옥,채의업 啓明大學校 醫科大學 1983 계명의대학술지 Vol.2 No.2
건강한 남녀 대학생 61명을 대상으로 일측 손을 15, 10, 5℃ 물에 담구어 국소한냉자극을 가하였으며 조기의 혈액순환변화를 추궁하기 위하여 3분간 침수하였다. 침수전후에 전신 및 국소반응을 Physiograph와 심전도계를 사용하여 측정하였다. 국소한냉자극시 나타나는 반응은 혈압, 분시심박수, 광전모세혈관맥박 파고, 피부온도, 피부전기저항, 주관적 감각 그리고 심전도를 한냉자극의 정도에 따라 비교 관찰하여 다음과 같은 결론을 얻었다. 혈압은 국소한냉자극시 증가하였다. 그러나 김 등의 보고와는 달리 회복기에 혈압이 대조치 이하로 감소하는 현상은 관찰할 수 없었다. 분시심박수는 5℃에서는 증가하였고 15℃와 10℃에서는 별 변화가 없거나 오히려 약간 감소하였으며 회복기에서는 대조치보다 약간 감소하였다. 광전모세혈관맥박 파고는 국소한냉자극시 감소하였다. 침수한 좌수에서 우수보다 더 큰 감소를 관찰하였고 이는 한냉자극의 국소효과에 의한 것으로 보이며 회복기에서는 좌수에서 5℃가 10℃보다 회복이 빠른 것으로 나타났다. 피부전기저항은 침수시 증가하였으며 침수한 좌수에서 우수보다 더 큰 증가를 보였다. 회복기에는 좌수에서는 회복되는 경향을 보이나 우수는 계속 증가함을 보였다. 피부온도는 좌우수 모두 저하하였다. 주관적 감각은 침수시 시간이 지남에 따라 동통의 정도가 증가되었다. 5℃의 국소한냉자극시 나타나는 혈액순환 변화는 동통에 의한 반응으로 사료되며 10℃나 15℃에서는 한냉 및 동통이 동시에 작용하나 한냉의 작용이 더 크다고 사료된다. 국소한냉자극시 심전도의 소견은 유의한 변화를 관찰하지 못하였다. The purpose of this experiment was to investigate the effects of cold stimulation on systemic and local blood circulatory system. Many investigators have studied about the effects of cold sttimulation on blood circulaatory system. However, the experiments were performed under the different conditions and therefore slightly different results have been obtained. Particularly the author attempted to evaluate the effects of cold stress by comparing both hands during cold stimulation. The experiment was performed by examining sixty-one healthy college students,whose mean age was 21.0±0.22, mean weight 60.6±0.90kg (male), 48.3±0.98kg (female). The cold stimuli were applied by immersing the left hand into the cold water of 15, 10 and 5℃ for 3 minutes, and the responses were observed on left and right hands simultaneously to evaluate systemic and local effects of the cold stimulation repectively. The observations were made through determining blood pressure(B.P.), heart rate, amplitude of photoelectric capillary pulse (APCP), skin temperature, Galvanic skin resistancce (GSR), subjective sensation and ECG, The obtained results were analyzed according to the degree of cold stimuli and compared with previous reports. The results are as follows: The B.P. was elevated during the cold stimulation. The increase of B.P. was remarkable at 5℃, and probably it was due to the response of pain. At the recovery period the decreased B.P. below control level as described by Kim et al?? was not observed. The APCP was decreased on both hands during the immersion. However it was more prominent on left hand since there was additiional direct cold effect. APCP was lowest at 10℃, which indicates the maximum constriction of ascular smooth muscle. Kuring the recovery period, APCP was more rapidly recovered at 5℃. It was considered that the cold induced vasodilatation was added at 5℃. The GSR was increased on both hands with greater response on left hand during the cold stimulation. At the recovery period, it was decreased on lleft hand, whereas it was still increasing on right hand. The skin temperature was decreased on both hands. The subiective senastion duriing hand immersion was mainly pain at 10 and 5℃, the intensity of pain was gradully increased during the immersion. The circulatory response to both cold stimulation at 5℃ was mainly due to pain, whereas at 10 and 15℃ it seems to be due to both cold and some pain. Changes of the ECG hindings findings acccordiing to the cold stimulation in theis study were not significant.