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정신분열증 환자의 전기충격치료후 증상 변화와 혈장 Prolaction,ACTH , Cortisol치 변화에 관한 연구
남수용,우행원 대한신경정신의학회 1995 신경정신의학 Vol.34 No.4
The purpose of this study was to observe the changes in the levels of PRL, ACTH and cortisol and clinical symptoms after ECT of schizophrenic patients and to find out the correlations between the effect o f ECT on hypothalamic-pituitary axis and clinical symptoms. The subjects were 15 inpatients who met DSM-III-R diagnonsitic criteria for schizophrenia and ECT was applied to them 8 times. Venous blood was sampled 15 minutes before (preECT) and after(postECT) the 1st and 8th ECT. Plasma levels of PRL, A CTH and cortisol were measured by RIA . C linical symptoms were assessed before 1st ECT and after the 8th ECT by BPRS. The results are as follows 1) After the 8th ECT, BPRS scores, especially thinking disturbance and withdrawl/retardation were significantly decreased as compared to those before the 1st ECT (p<0.01). 2) Plamsa levels of postECT PRL, ACTH and cortisol were significantly higher than preECT levels of the 1st and 8th ECT. 3) Plasma levels of preECT P R L at 8th ECT were significantly lower than the baseline levels(p<0.05) and response rate of PRL(postECT-preECT) was significantly decreased on the 8th ECT as compared to the 1st ECT (p<0.05). In conclusion, the changes in the levels of PRL, ACTH and cortisol after ECT were caused by the changes of activity of central neurotransmitters, result in the improvement of schizophrenic symptoms. In particular, repeated ECT were related to an increase in the activity of dopam inergic receptor, which can explain the effect of ECT on the improvement of negative symptoms in chronic schizophrenia.
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실버 파우더 형상에 따른 감광성 실버페이스트의 물성 연구
남수용 한국화상학회 2015 한국화상학회지 Vol.21 No.2
본 연구에서는 크기와 형상이 서로 다른 4가지 실버 파우더를 이용하여 감광성 실버 페이스트를 제조 하였다. 제조된 실버 페이스트의 레올로지 특성 및 터치패널용 전도성 미세패턴 구현을 검토하였다. 그리고 건조방식에 따른 전도성도 평가하였다. 그 결과 실버 파우더의 평균입자 크기는 D50=0.8∼1.0㎛이 가장 낮은 저항치를 얻을 수 있었고, 또한 패턴의 Sharpness도 가장 우수함을 알 수 있었다. 건조방식은 예비건조 및 후 건조를 IR/IR방식으로 진행한 것이 가장 낮은 저항치를 얻을수있었다. In this research, four different silver powders with specific sizes and shapes were used in order to produce photosensitive silver paste. The produced silver paste was checked in order to see whether its rheological properties and its micro-conductive pattern specific to the touch panel were well embodied. Moreover, the conductance of the paste, with reference to its drying system, was evaluated. As a result, the lowest resistance was achieved when the particle mean diameter was D50=0.8∼1.0㎛, which also produced the highest pattern sharpness. The drying system where IR/IR method was used for both pre-drying and post-drying processes resulted in the lowest resistance.
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남수용,김신영,박세훈,남현진 한국화상학회 2020 한국화상학회지 Vol.26 No.4
신축성 전극을 다양한 소재와과 방식을 통해 제조되고 있으며 많은 기계적 특성 분석이 연구되고 있다. 은, 구리, 금, 나노와이어 등 다양한 금속이나 CNT, graphene, 플러렌 등을 기반으로 연구되고 있으며 대부분 높은 전도성과 신축특성을 요구하는 어플리케이션에 사용되지만 고가라는 단점이 있다. 본 연구에서는 저비용 소재와 공정으로 높은 신축특성과 반복 특성을 보유한 신축성 전극을 개발하였다. 값싼 전도성 탄소 와 흑연을 혼합하여 페이스트를 개발하였고 개발된 페이스트를 메탈마스크 인쇄 공정을 통해 TPU기판 위에 인쇄하였고 120℃에서 2시간 경화를 진행하였다. 이렇게 개발된 전극을 인장 시험과 인장 반복 시험을 통해 특성을 증명하였고 향후 어플리케이션 적용 가능여부를 확인하기 위해 무릎에 임시로 고정 후 간이 시험을 진행한 결과 20회 반복하는 동안 일정한 저항 변화를 보여줬다. Stretchable electrodes are being manufactured through various materials and methods, and many mechanical properties analysis is being studied. It is studied based on various metals such as silver, copper, gold, and nano-wire or CNT, graphene, and fluren, and most of them are used in applications that require high conductivity and stretch properties, but there is a disadvantage of high price. In this study, a stretchable electrode with high elasticity and repetitive properties was developed with low-cost materials and processes. The paste was developed by mixing cheap conductive carbon and graphite, and the developed paste was printed on the TPU substrate through metal mask printing process and cured for two hours at 120℃. The developed electrodes were characterized by tensile and tensile repetition tests, and the results of the temporary fixation on the knee to check the applicability of the application in the future showed a constant change of resistance
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남수용 한국인쇄학회 1995 한국인쇄학회지 Vol.13 No.1
Today, regarded as a science in photography, the role of the lens and sensitizer is important. In this research, we manufactured simple test lens with a various diaphragm which is based on the general purpose lens, and measured the quantity of light and flare. The objective of this study is to figure out the characteristics of our test lens and maximize its usefulness. The results showed that (1) The quantity of light through the lens was not constant. (2) As for flare, its value was consist. (3) Our lens had the characteristics of the soft lens and (4) It had much chromatic abberation. Therefore, We found that a hand-made lens is to acquire visual image such as the effects of a specialized lens.
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남수용,석문식,방인권,박필성 한국해안해양공학회 1994 한국해안해양공학회 논문집 Vol.6 No.4
본 연구에서는 순압모델을 이용하여 대마난류(Tsushima Warm Current)의 분기기작 및 계절별 분기위치의 변화에 바람이 미치는 영향을 살펴보았다. 모델 격자간격은 위도와 경로방향 모두 0.25 ?로 하였고 해수표면에 적용한 계절별 바람응력은 Hellerman and Rosenstein(1983)의 바람을 이용하였다. 모델결과에 의하면 대마난류는 북풍계열의 바람이 강한 동계(10월-3월)에는 일론 큐슈 남서쪽 대륙사면에서 쿠로시오로부터 직접 분기되어 형성되며, 하계(4월-9월)에는 대만해협(Taiwan Strait)을 통해 유입된 대만난류가 대마난류의 기원으로 나타난다. 쿠로시오는 동계에 최대 수송량을 가지며 하계에 최소를 보이고, 대만난류(Taiwan Current)의 수송량은 이러한 쿠로시오와 약 160도의 위상차를 갖는다. 대마난류의 수송량 변화는 쿠로시오의 변화와 120 ?의 위상차(약 4개월)를 가질 때 잘 일치한다. The separation mechanism of the Tsushima Warm Current and the effects of seasonal wind stress on the separation position are studied by use of a barotropic numerical model. The grid spacing of 0.25 ? both in latitude and longitude is used in the model, and Hellerman and Rosenstein's wind (1983) is applied to the sea surface as seasonal wind stress. According to the model results, during winter seasons (from October to March) when northly wind is prevailing, the Tsushima Warm Current is formed by direct separation from the Kuroshio on the continental slope southwest of Kyushu. On the other hand, during summer seasons (from April to September), the Taiwan Current that flows through the Taiwan Strait seems to be the origin of the Tsushima Warm Current. The Kuroshio reaches its maximum transport during winter seasons, and the minimum during summer. The transport of the Taiwan Current shows a phase lag of about 160 ? relative to the Kuroshio. The transport variation of the Tsushima Warm Current agrees with that of the Kuroshio when the former is shifted by 120 ?(about 4 months).
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