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鄭命采,柳逢夏,朴東源,柳基遠 대한한방종양학회 1998 대한한방종양학회지 Vol.4 No.1
In order to investigate the effect of Bujaleejungtang, by means of oral medication to rats and mice, to isolated intestine and stomach, and the effect to pyloric ulcer, indomethacin-induced ulcer, secretion of gastric juice, and to transport ability of intestine content were studied as the action to G-1 tract. The effect to normal rats and resperpine-treated rats were studied as the action to thermo-regulation. The results were as follows; 1. Bujaleejungtang showed the inhibitory effect on the smooth muscle contraction induced by acethylcholine chloride and barium chloride in the isolated mice ileum. 2. Bujaleejungtang showed inhibitory effect on the contraction induced by acetylcholine chloride and barium chloride in the rat fundus-strip. 3. Inhibitory effect of Bujaleejungtang on pyloric ulcer, indomethacin-induced gastric ulcer in rats was statistical recognized(p<0.05). 4. No inhibitory effect of Bujaleejungtang on gastric juice secretion in Shay rats was recognized. 5. Inhibitory effect of Bujaleejungtang on gastric free acidity and total acidity in Shay rats was recognized only when Bujaleejungtang was medicated in high thickness(2000㎎/㎏)(p<0.001) 6. Inhibitory effect of Bujaleejungtang on pepsin output in Shay rats was recognized only when Bujaleejungtang was medicated in high thickness(2000㎎/㎏)(p<0.001) 7. Inhibitory effect of Bujaleejungtang on barium surface transport in the small intestine of mice was recognized only when Bujaleejungtang was medicated in high thickness(2000㎎/㎏)(p<0.05). 8. Inhibitory effect of Bujaleejungtang on barium surface transport in the large intestine of mice was recognized(p<0.05). 9. Inhibitory effect of Bujaleejungtang on on rectal temperature in normal rats was recognized. 10. Inhibitory effect of Bujaleejungtang on on rectal temperature in reserpine-treated rats was recognized only when Bujaleejungtang was medicated in high thickness(2000㎎/㎏)(p<0.05)
광물찌꺼기적치장의 안전관리를 위한 적정 모니터링 방안 연구
정명채,김정욱,황인호,양인재,박제현,박주현,김대엽 한국자원공학회 2018 한국자원공학회지 Vol.55 No.6
This study has focused on analysis factors affecting safety monitoring system at tailings sites, and the evaluation equipment to monitor the factors. Twenty sites at eighteen mines with unsafe conditions were selected to examine the equipment. There were three main factors influenced safety in the sites including surface erosion, piping, and slope instability. In detail, the surface erosion was divided into three sub-factors (planting, soil-topping layer, and tailings), piping into three sub-factors (liner, rain protection facility and leachate), and slop instability was also divided into three sub-factors (slop, concrete wall, and reinforcing wall). As results of in-field measurement, a CCTV was the most effective facility, and electrical resistivity survey, acoustic sensing, thermal liner sensor, structure inclinometer, rainfall meter, and flowmeter were also highly effective. According to applications of the facilities in the unstable tailings, structural defects were mainly found in the piping, which was the most important monitoring factor for safety management of tailings sites. 광물찌꺼기적치장 안전 모니터링을 위한 적치장 안전에 영향을 미치는 요소를 분석하고 이러한 요소를 감시 할 수 있는 계측장비를 검토하였다. 또한, 이러한 결과를 국내 광물찌꺼기 적치장(20개소, 18개 광산)에서 발생되는 결함에 대해 적용 가능한 계측장비를 선정하였다. 요소분석은 표면 침식, 파이핑 및 사면 불안정으로 구분하여 평가하 였으며, 이를 다시 세분하여 표면 침식은 식생, 복토층 및 광물찌꺼기, 파이핑은 차수층, 우수배제시설 및 침출수, 사면 불안정은 사면, 콘크리트 옹벽 및 석축으로 구분하여 결함의 지표 및 계측항목을 설정하였다. 계측은 주로 상시 및 변 위계측이 가능한 CCTV의 활용이 높게 평가되었으며, 전기비저항탐사, 음향계측기, 다점온도모니터링, 구조물경사 계, 강우량계 및 유량계 등의 활용도가 높은 것으로 평가되었다. 또한, 국내 적치장에서 발생되는 결함에 적용한 결과, 주로 파이핑과 관련된 차수층, 우수배제시설 및 침출수에서 결함이 주로 발견되어 이와 관련된 계측장비의 활용이 높 은 것으로 평가되었다.
이력에너지흡수 원리를 이용한 대경간 구조물의 내진설계(1) -이선형 탄소성 이력거동에 의안 에너지 소산원리를 이용하는 방법-
정명채,원성대,Cheong, Myung-Chae,Won, Sung-Dae 한국공간구조학회 2010 한국공간구조학회지 Vol.10 No.1
공간구조의 지붕을 지지하는 기둥상단부에 탄소성기구를 설치하여 설계 하중을 초과하는 지진동이 가해졌을 때 이 기구의 탄소성 이력거동을 통하여 지진에너지가 흡수되는 효과를 검토한다. 이 효과로 지붕트러스로 전달되는 지진에너지가 저감되는 것을 입증하고 이러한 원리를 공간구조물의 제진설계에 활용할 수 있음을 입증한다. 트러스 형식의 지붕구조에 설계하중 이상의 외력이 가해지는 경우에는 구성부재의 좌굴파괴로 인한 건물전체의 취성붕괴가 예상되기 때문에 이러한 상황에서 구조안전성을 확보하는 설계법이 요망되며, 이 논문은 트러스 지붕에 전달되는 지진에너지를 감소시키는 설계방법을 제안하고 있다. This paper suggests a vibration control method long span structures with trussed roof. Basic concept of this method is based on the energy absorption through hysteresis loop of an elasto-plastic element. This element is attached on the top of the column supporting the roof. Two different types of roofs and three of earthquake waves are used in the investigation. It shows that this is very efficient method to reduce the seismic energy of roof member transferred from the column.