시멘트의 종류에 따른 포스트의 인장강도 및 제거의 난이도에 관한 연구

박정원,노병덕,이정석 大韓齒科保存學會 1997 Restorative Dentistry & Endodontics Vol.22 No.1

GIS를 利用한 土地情報시스템構築 方案에 關한 硏究

박병춘,장지원 木浦大學校 工業技術硏究所 1999 工業技術硏究誌 Vol.9 No.-

The land one of elements that consist of the nation, a foundation of all activity to an indivisual and society. This was limited to supply, on the other hand what the demand increase in value for a reality increase in population, development in economy and society the immediate make use of the land in correct and quick. Accordingly so that centering around a map in order to manage integration in use of the land rationally and point to future, the subject local in where yeo-su city, chollanamdo which collected various kinds of information systematically so as to the largest for a various analysis that it has made use of GIS and established the Land Information Management System by input a relation with the land. Above the method must be preceded numerical value cadastral that foundation of the land information, also all information take centering around a land-number into consideration make use of land-number in discernment information in order to standard and correction with computerization for use cooperation reach to a conclusion that it must have found a new system the land.

연직배수공법의 교란효과의 배수저항에 관한 고찰

박용원,김병일,류태하 明知大學校 産業技術硏究所 1995 産業技術硏究所論文集 Vol.14 No.-

Vertica1 drain method is being used as effective ground improving technique for soft clay layer with small shear strength and high compressibility. Theoretically, consolidation time of ground can be decreased by decreasing drainage path and increasing well diameter. In reality, however, smear effect due to the drain installation and the well resistance cause consolidation time delay. In this study, we have studied on the inf1uence of the smear effect and the well resistance of vertical drain on the consolidation time. Theories of Barron, Hansbo, Onoue are used in the estimation of the consolidation time and compare the results changing weak layer thickness, diameter ratio of smear zone, coefficient ratio of consolidation with respect to sand drain, paper drain, pack drain, and SCP. In this paper we found that the well resistance has great influence on increasing the consolidation time in paper and pack drain. And sand drain and SCP, the smear effect has great influence on increasing the consolidation time and well resistance effect is negligible.

기관지천식에서의 Mabuterol의 임상효과

박인원,최병휘,허성호 최신의학사 1989 最新醫學 Vol.32 No.3

黃連湯이 CCl4로 유도된 간중독 흰쥐에 미치는 영향

高元島,朴賢俊,尹炳局,鄭成伊,朴宣東 대한본초학회 1999 大韓本草學會誌 Vol.14 No.2

The purpose of this study is to observe the effects of Hwanglyuntang on serum reactions of CCI₄ treated rats. In this study the experimental rats were divided five groups(Normal, Control, Sample A, Sample B and Sample C). Under the same condition Normal group was fed basal diet and water, the Control group was injected with carbon tetrachloride(CCI₄, 0.5㎖/㎏) and fed a basal diet for 2 weeks, the Sample A group was injected with carbon tetrachloride(CCI₄, 0.5㎖/㎏) and fed the Hwanglyuntang extract(10㎖/㎏) for 2 weeks, the Sample B group was fed the Hwanglyuntang extract(10㎖/㎏) for 2 weeks and injected with carbon tetrachloride(CCI₄, 0.5㎖/㎏), the Sample C group was fed on the Hwanglyuntang extract(10㎖/㎏) for 2 weeks. The change in GOT, GPT, γ-GPT, ALP, LDH activity and Bilirubin level in blood serum were preasured. The obtained results are summarized as follows : It was found that GOT, GPT, γ-GPT, ALP LDH activity and Bilirubin levels in the blood serum of the sample groups, as compared with control group, sample group was significantly decreased.

선인장 양심실 보조장치의 설계 및 임상적용을 위한 평가

민병구,박찬영,최재순,이혁수,황창모,김삼성,윤걸중,김종원,선경,이경갑,정종태,김원곤 제주대학교 인공심장이식연구소 2001 인공심장 연구 Vol.2 No.1

현재 개발되고 있는 맥동형 이식형 인공심장은 완전이식형 인공심장과 좌심실보조장치 뿐이다. 좌심실보조장치를 장착한 환자의 10~15%가 우심실의 보조를 필요로하고 완전이식형 인공심장의 장착을 위해서는 자연심장을 제거해야하는 상황에서 이식형 양심실보조장치에 대한 필요성이 대두되고 있다. 본 연구진은 완전이식형 인공심장으로 개발된 한국형 인공심장을 개선하여 양심 실 보조장치를 개발하였다. 양심실보조장치는 이동형 작동기식 미케니즘을 이용하고 있으며 에너지 변환장치와 감속기로 구성된 작동기와 혈액주머니, 그리고 내장형 제어기로 구성되어 있다. 선인장 펌프로 명명된 KAH350은 캐뉼라의 연결을 위한 커넥터를 포함하여 길이 177mm, 폭 164mm, 높이 67 이고 무게 780g이며 최대 심박출량은 5L/min 이다. 양심실보조장치로 개발된 선인장펌프는 좌심실보조장치로도 응용이 가능하다. 이식적합성과 생체적합성을 평가하기 위하여 좌심실보조장치로 5회, 양싱실보조장치로 6회의 동물실험을 수행하였다. 각각 최장 28일간 생존하였으며 11회의 동물실험중 장치의 결함에 의한 것이 3회 있었는데 이들은 모두 전자장치의 결함과 방수처리문제였다. 현재 이식적합성과 일박출량을 향상시킨 KAH400모델이 개발중이다. The types of pulsatile implantable artificial hearts that are on the way of development and have been developed are totally implantable artificial heart and implantable left ventricular assist device (LVAD). Approximately 10% to 15% of all patients Implanted with wearable VADs have required right heart support with another device. And it is reluctant to patient who should remove his or her own heart to be implanted with total artificial heart. These situations drive the development of implantable bi-ventricular assist device (BVAD). The Korean BVAD was develophed by modifying the moving actuator type Korean artificial heart. This electro-mechanical BVAD comprises actuator including energy converter and reduction gear train, blood sacs, and internal motor and energy controllers. The KAH350 which is named as 'Cactus Pump' is 177mm in length, 164mm in width, and 67mm in thickness including connectors and nuts. The weight and maximum cardiac output of Cactus Pump is 780g and 5L/min, respectively. The Cactus Pump that was developed as BVAD could be used as LVAD by attaching compliance caps on the 2 ports of one ventricle. The animal experiments were undergone 5 times for LVAD, and 6 times for BVAD. The best records were 28 days survival in both applications. There were 3 times of device failure and they were all associated with electrical connection and hermetic sealing. The KAH400 that has improved anatomical fitting characterisitcs and stroke volume is on development.

反應性 加熱 蒸着法에 依한 水素化된 非晶質 게르마늄의 電氣的 特性

李原鎭,梁承勳,朴奉斗,羅炳旭 慶北大學校 師範大學 1985 敎育硏究誌 Vol.27 No.-

Reactive thermal evaporation of high purity polycrystalline germanium was carried out in an atmosphere of hydrogen plasma. Deposition temperature (T_s) and hydrogen pressure (P_(H_2)) were proved to be important parameters to determine the electrical properties of samples, as expected, and the optimum T_s was determined as 200℃. Evaporation onto a substrate at 200℃ in an atmosphere of 1 torr hydrogen plasma has been shown to yield a film which shows a low RT conductivity (10^-6Ω^-1㎝^-1) and an activation type conduction (with an activation energy of 0. 38 0. 42eV) in measuring temperature (above RT). And for optimized samples, germanium hydrogen bonds were proved to be stable even after annealing at 400℃.

연약지반 성토사면의 안정해석에 관한 연구

신성호,박용원,김병일 明知大學校 産業技術硏究所 1997 産業技術硏究所論文集 Vol.16 No.-

When structures are constructed on soft ground, the counterplans have to be considered since the ground cylindrical slip failure by embankment, excessive settlement and lateral displacement cause the damage to structures and underground objects. In this study the lateral displacement are compared with the minimum safety factor that is considered by cylindrical slip failure for not-treated ground, Pack Drain treated ground and SCP treated ground. Numerical results show that the design of embankment by lateral displacement criteria is safer than that by safety factor of cylindrical failure. In considered larger than 1.8. when an important structure is designed, allowable lateral displacement for design of embankment has to be considered since every structure has different allowable lateral displacement.

목탄분말의 원료수종이 양파 생육과 토양 이화학성에 미치는 영향

윤봉기,박인진,유영권,허원영,김병운,김용웅 한국국제농업개발학회 2004 韓國國際農業開發學會誌 Vol.16 No.3

양파재배 토양에서 토양개량용으로 적합한 목탄의 원료 수종을 선발하기 위해서 관행(무처리)과 코코넛피트, 대나무, 참나무, 활엽수 수피, 소나무로 만든 목탄분말의 6처리로 시용량 500㎏· 10a^(-1)으로 하여 2002년에 시험한 결과는 다음과 같다. 1. 시험에 사용한 5종 목탄의 pH는 5.1~10.1, T-N 0.15~0.71%, P₂O_(5) 2.06~2.65%, K₂O 0.20~0.86% 범위였으며 1 ㎜이하 입자의 분포는 9.0~84.8%이었다. 2. 양파의 생육은 목탄시용으로 줄기직경이 크고 주당 엽수가 많은 경향이었으며 참나무, 활엽수 수피, 대나무 목탄처리 구에서 생육이 좋았다. 양파의 수량은 4,631~5,114㎏ 10a^(-1)으로 무처리(4,638㎏)에 비하여 구고가 크고 구중이 무거운 참나무목탄과 활엽수 수피 목탄처리구에서 각각 10%, 소나무 목탄구에서 3% 증수되었으며 유의성이 인정되었다. 3. 시험 후 토양의 물리성은 목탄 시용으로 용적밀도와 토양의 고상비율이 줄어들 고 액상과 기상, 공극율이 증가하는 경향을 보였다. 화학성은 코코넛 피트처리구 를 제외한 처리구에서 토양 pH가 개선되었고, OM, CEC 는 모든 처리구에서 증가하는 경향을 보였다. This experiment was conducted to find out moderating tree kinds of wood charcoal pow-der for soil improvement and onion growth in 2002 year. The wood charcoal materials were coconut peat, bamboo, black oak, pine, and broadleaf tree bark. Wood charcoal application rate was 500 ㎏ 10a^(-1). Results were summerized as follows; Chemical properties of wood charcoal used experiment were pH 5.11~10.1, T-N 0.15~0.71%, P₂O_(5) 2.06~2.65% and K₂O 0.20~0.86%. The particle size of <0.1 ㎜ was 9.0~84.8%. Onion growth of plot applied wood charcoal was better than that of plot not applied wood charcoal. The number of leaf and diameter of stem at plot applied wood charcoal was better than that of plot not applied wood charcoal. Growth of plot applied black oak charcoal, broadleaf tree bark char-coal, and bamboo charcoal was better than that of any other plot. Yield of plot applied wood charcoal was 4,631~5,114 ㎏ 10a^(-1). The yield of plot applied black oak charcoal, broadleaf tree bark charcoal and pine charcoal was increased 10, 10, 3% than that of control(4,638 ㎏ 10a^(-l)), respectively. It was significant at 5% level. Soil physical properties of after experiment was decreased bulk density and solid phase, but liquid phase, air phase and porosity were increased than that of control. Soil chemical properties of after experiment trend to be improved pH. Soil OM and CEC was increased than that of control.

목탄분말 시용량이 양파 생육 및 토양 이화학성에 미치는 영향

윤봉기,박인진,유용권,허원녕,김병운,김용웅 한국국제농업개발학회 2004 韓國國際農業開發學會誌 Vol.16 No.2

양파재배 토양에서 목탄의 적정 사용량 및 토양개량 효과를 구명하기 위하여 참나무 목탄분말을 10a당 0(무처리), 300, 500, 1,000, 1,500, 2,000㎏ 수준의 6처리로 2000년에 시험한 결과는 다음과 같다. 1. 목탄 시용으로 양파생육이 좋아지는 경향이었으며 10a당 300㎏시용에서 초장, 엽수, 줄기직경 등 생육이 좋았다. 2. 목탄 시용에 따른 순량 구성요소는 10a당 300㎏ 시용에서 가장 좋았으며 수량도 300, 500㎏ 시용에서 각각 7%, 2% 증수되었고 1,000㎏ 이상 시용에서는 감수되는 경향 이었다. 3. 목탄 시용으로 토양 pH가 중성 가까이 변화되고 토양 유기물 함량과 양이온 치환용량 이 증가하여 토양 화학성이 개선되었다. 4. 목탄 시용으로 토양의 용적밀도와 고상율이 감소하고 토양 공극율이 증가하여 토양 물 리성이 개선되었다. This experiment was conducted to find out an application amount of wood charcoal pow-der and soil improvement effect of wood charcoal in 2000 year. The wood charcoal was made of a black oak. An application amount of used wood charcoal was 0, 3, 5, 10, 15, 20 Mg/㏊. Effect of soil improvement and application amount of wood charcoal was summerized as follows; Onion growth of plot applied wood charcoal was better than that of plot not applied wood charcoal. The plant height, the number of leaf and diameter of stem of plot applied wood charcoal 3 Mg/㏊ were better than any other that of plot. Yield components of plot applied wood charcoal 3Mg/Bμ were the best. Yied of plot applied wood charcoal 3 and 5 Mg/ha was increased 7% and 2% than that of control. But that of plot applied wood charcoal 10 Mg/㏊ over was trend to decrease.