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저체온요법 치료 환자에서의 두개강내와 액와부의 온도차이
유도성,김달수,허필우,조경석,김재건,박춘근,강준기,Yoo, Do-Sung,Kim, Dal-Soo,Huh, Pil-Woo,Cho, Kyung-Suck,Kim, Jae-Gun,Park, Chun-Kun,Kang, Joon-Ki 대한신경외과학회 2001 Journal of Korean neurosurgical society Vol.30 No.7
Objective : The brain temperature is about $0.4-1^{\circ}C$ higher than that of the other peripheral body area. But most of these results have been obtained in normothermic condition. The objective of this study is to evaluate the temperature difference between the brain and axilla, in patients under hypothermia. Methods : Sixty-three patients(37 women and 26 men) who underwent craniotomy with implantation of the thermal diffusion flowmetry sensor were included in this study. The temperature of the cerebral cortex and axilla was measured every 2 hours, simultaneously. The patient group was divided according to axillary temperature hyperthermia( over $38^{\circ}C$), normothermia($36-38^{\circ}C$) and hypothermia(under $36^{\circ}C$). Total 1671 paired sample data were collected and analyzed. Results : The temperature difference between the cerebral cortex and the axilla was $0.45{\pm}1.04^{\circ}C$ in hyperthermic patients, $0.97{\pm}1.1^{\circ}C$ in normothermic patients and $1.04{\pm}0.81^{\circ}C$ in hypothermic patients. The temperature difference has statistical significance in each group(unpaired t-test, p<0.05). Conclusion : From our study the temperature difference between the brain and the axilla in hypothermic condition increased more than that of normothermic state. And in hyperthermic condition, the temperature difference decreased.
이준규(June Kyoo Lee),박경우(Kyung-Woo Park),강현오(Hyun Oh Kang),김재건(Jae Kun Kim),김학린(Hak-Rin Kim),공성호(Seong Ho Kong) 대한전기학회 2009 대한전기학회 학술대회 논문집 Vol.2009 No.7
기존의 초소형 렌즈모듈들은 초점 거리 가변을 위한 구동 장치가 필요하여 소형화 한계, 큰 전력소모, 부품의 기계적 결함 등 해결해야 할 부가적인 문제점들이 존재하였다. 액체렌즈는 이러한 문제를 해결할 수 있는 유력한 기술로 주목받고 있으며, 특히 부가적인 구동 장치가 필요없고 비교적 간단한 원리로 렌즈 곡률을 조절할 수 있는 일렉트로웨팅 기반의 액체렌즈는 초점 거리 조절 및 줌 조절이 필요한 휴대폰, 캡슐 내시경 등에 적용이 가능하다. 그러나 기존의 일렉트로웨팅 기반의 액체렌즈는 렌즈 캐비티의 크기에서 큰 단점이 있으며, 렌즈모듈구성 시에도 소형화하는데 한계가 존재하였다. 본 연구에서는 렌즈 캐비티를 MEMS 기술을 이용하여 실리콘 기판 상에 제작함으로써 구동회로의 집적이 가능한 액체렌즈를 제작하였다.
Protective Effect of Antler in Experimental Colon Carcinogenesis
Park, Hae-Young,Kim, Dong-Hyun,Hong, Nam-Doo,Kim, Jae Kun,Won, Do-Hee,Kim, Nam-Jae WHO COLLABORATING CENTRE FOR TRADITIONAL MEDICINE 1999 東西醫學硏究所 論文集 Vol.1999 No.-
There are epidemiological evidences that the population with high fecal β-glucuronidase activity has greater risk of colon cancer than the population with low fecal β-glucuronidase. This relationship was investigated by using the mouse-dimethylhydrazine colon carcinogenesis model and the extract of antler which was a β-glucuronidase inhibitor. Mice with low fecal β-glucuronidase activity induced by administration of water and Folch's fraction of antler had significantly fewer aberrant crypts after injections of 1,2-dimethylhydrazine (DMH) than mice treated with DMH alone. The result supports the hypothesis that the inhibitor of β-glucuronidase such as antler extract can protect an animal against the induction of colon cancer.