[논문]실시간 정밀 3차원 지형측량기법을 이용한 저수량산출시스템 개발

송석진,장용구,김상석,강인준 釜山大學校生産技術硏究所 2004 生産技術硏究所論文集 Vol.63 No.-

현재 고정밀도 저수량 측량에 사용되는 측량장비에는 수평위치결정방법으로 실시간 DGPS측량장비가 많이 활용되고 있고, 수심측량에는 디지털 음향측심기를 많이 사용하고 있다. 본 연구에서는 현재, 수심측량 결과처리 시 문제가 되고 있는 소프트웨어의 가격부담을 줄이고 수심측량과 내업처리에 의한 저수량산출을 통합처리 할 수 있는 국내 자체개발의 저가형 외 · 내업 일체형 저수량산출시스댐을 개발하였다.

A Novel E2F Target Gene Ei24 is Essential for Fetomaternal Tolerance and Normal Development

ln-Jeoung Baek,Young Hoon Sung,Han-Woong Lee 한국동물생명공학회(구 한국동물번식학회) 2010 발생공학 국제심포지엄 및 학술대회 Vol.2010 No.1

Influencing factor on acid gas removal and flow characteristics of slaked lime in onsite production process

( Ln-hee Hwang ),( Yutaro Sakai ),( Takayuki Matsuo ),( Yasumasa Tojo ),( Toshihiko Matsuto ) 한국폐기물자원순환학회(구 한국폐기물학회) 2018 한국폐기물자원순환학회 심포지움 Vol.2018 No.1

Slaked lime is commonly used as alkali agent for dry scrubbing of acidic gases such as hydrogen chloride and sulfur oxide in flue gas discharged from municipal solid waste incinerator (MSWIs). As the utilization amount of slake lime is the most among chemicals used in MSWI, its influence on the cost of flue gas treatment is significant. In our previous research, the on-site production condition of slaked lime using low cost quicklime was examined to develop a hydrator installed in MSWL As the result, slaked lime with same acid gas removal performance as commercial one was obtained. However, when the produced slaked lime was stored in a hopper and supplied with a feeder, the amount of adhesion on the wall surface was increased, which led to the problem that the quantitative supply to duct became impossible. Thus, the improvement of flow properties of the produced slaked lime was required. The aim of this research was to clarify the effect of the production conditions on the acid gas removal rate and the flow property of slaked lime and to find production conditions that both acidic gas removal performance and flow property become equal to or higher than commercial slaked lime. For this purpose, the molar ratio of distilled water to quicklime (MR=2.0 and 2.5), stirring rate (10~40rpm), residence time (30~60min) of hydration process, etc. were examined using a lab-scale of hydrator. Hydration rate, water content, hydrogen chloride removal rate, particle size distribution, specific surface are/pore volume, angle of repose, and <Uscharge rate of slake lime from circular orifice were measured to evaluate produced slaked lime. Residence time of quicklime varied by the angle of paddle (5~20°) in hydrator. Since the hydration rate was constant at 97% or more at the retention time of 46 min, the operation was performed with the paddle angle fixed at 10。. The water content of slaked lime produced at MR=2.5 was higher but it was decreased to the same level of slaked lime produced at MR=2.0 when the stirring rate was increased to 40 rpm. The water content of slaked lime obtained at MR = 2.0 was barely changed regardless of stirring rate. The angle of repose was high at MR=2.5, indicating that the flow property was comparatively poor. The discharge rate of the slaked lime produced at MR=2.5 was relatively slow too. It was considered that the flow property of slaked lime deteriorated as the amount of water added to quicklime increased. The variation of the removal rate of hydro gen chloride depending on stirring rate and MR was small. Slaked lime with hydrogen chloride removal performance equivalent to commercial one was obtained under the production condition tested in this work. It was suggested that slaked lime can be obtained at MR=2.0 and stirring rate=10 or 20 rpm, which has the same acid gas removal performance and flow property as commercial slaked lime.

가동원전 주발전기 여자시스템 제어카드 검증설비 활용사례

김인성(ln-Sung Kim),박진엽(Jin-Yeub Park),김순용(Soon-Yong Kim),강민구(Min-Goo Kang) 대한전기학회 2019 대한전기학회 학술대회 논문집 Vol.2019 No.10

두부손상을 동반한 악안면외상에 대한 임상적 연구

양인석(ln Seok Yang),여환호(Hwan Ho Yeo),김영균(Yong Gyun Kim),이철우(Chul Woo Lee),박인순(In Sun Park) 대한구강악안면외과학회 1994 대한구강악안면외과학회지 Vol.20 No.2

This is a retrospective study on 53 facial bone fracture patients with head injuries treated in Chosun university hospital, Department of Oral & Maxillofacial Surgery and Neurosurgery from Jan. 1991 to Dec. 1992, and the obtained results were as follows. 1. Of the 355 patients with facial bone fractures, 63 patients suffered from head injures(17.7%) and male to female ration was 5.7:1. 2. The most frequently affected was midface area(71%) including zygoma(32%), nasal bone(21%), and maxilla(19%). 3. The age frequency was the highest in the third decade(40%). 4. In the zygomatic fracture, the most frequent site was zygomatic arch area(47%), It was Lefort II type fracture(53%) in the maxilla and symphyseal & body area(66%) in the mandible. 5. The most frequent cause was traffic accidents(66%). 6. The most frequently traumatic sign was closed head injury(46%) involving cerebral contusion, subdural hematoma. Intracerebral hemorrage. 7. The most frequently associated injuries were facial laceration(43%), and other associated injuries included spine injury(17%), whole body contusion(16%), chest injury(13%), extremities injury(9%), abdomen injury(2%). 8. Of 25 patients below drowsy mentation, the mean Glassgow Coma Scale score was 10.8. 9. In the classification of clinical mental state by De Jong, alert state was 31 cases, drowsy state 12 cases, semicoma 7 cases, coma 3 cases. 10. GCS score was low in the patients of craniocerebral injury concomittant with combined midfacial bone fracture. 11. The open reduction to the facial bone fractures was performed in about 8 days after the injury in the 13 of total 25 cases(52%) due to neurosurgical problems. 12. The complications were maloccusion(2 cases), malunion(1 case), nonunion(1 case) and deep space infection(1 case), and the complication rate was 19.2%.

미주자유무역지대(FTAA)에 있어서의 미국과 메르코수르 간 역학관계

정인교 ( Ln Kyo Cheong ),권기수 ( Ki Su Kwon ) 한국외국어대학교 국제지역연구센터 2001 국제지역연구 Vol.5 No.2

미주 34개 국가들은 지난 4월 20~22일 캐나다의 퀘멕에서 개최된 제3차 미주정상회담에서 2005년 1월까지 FTAA 협상을 총결짓고 2005년 12월부터 협정을 발효키로 합의함에 따라 FTAA 출범이 가시화될 전망이다. FTAA 출범은 인구 8억 명, 총 GDP 12조 달러에 달하는 세계 최대의 단일시장 형성을 의미한다. 특히 FTAA는 미국과 같은 선진국, 멕시코와 같은 신흥공업국, 중남미 저개발국들간의 통합체이기 때문에 산업구조의 상호보호완성으로 인해 역내국산 산업·교역상의 시너지 효과가 매우 클 것으로 보인다. 미주지역은 우리나라 총 수출의 28.7%를 소화하는 시장으로 FTAA 출범은 중장기적으로 우리나라의 무역에 적지 않은 영향을 미칠 것으로 전망되는바, FTAA 출범에 대비한 대책 마련이 시급한 설정이다. FTAA 출범으로 우리나라의 전통적인 무역흑자시장인 중남미지역에 대한 수출은 10~12%(금액으로 7억 달러) 감소되고, 우리나라의 외국인직접투자 유치에 불리하게 착용할 것으로 분석된다. 따라서 FTAA 출범에 대비하여 우리나라는 주요 거대경제권과의 자유무역협정 체결 노력 강화, 중간재 위주로 수출구조 개선, 대중남미 부자진출 확대 등의 다각적인 전략을 강구할 필요가 있다. Thirty-four countries from North and South America met at the Third Summit of the Americas, in Quebec, Canada, on April 20-22, and agreed to create a free trade area of the Americas no later than December 2005. With a combined population of 800 million and a GDP of US$12 trillion, the FTAA will he the largest free trade area in the world. FTAA countries include developed countries like the U.S., some developing countries like Mexico and less developed countries in Central America. In view of these wide differences in levels of development and economic size, the FTAA is expected to provide opportunities to facilitate synergy effects on intra-regional industry and trade due to the complementary industrial structures among member countries. Considering the fact that the Americas account for 28.7% of Korea`s total exports, the FTAA will have a great impact on Korea`s international trade in the long run. Therefore, Korea should be prepared for a change in its trade environment. Due to the creation of the FTAA, Korean exports to Latin America, a traditional trade surplus market, will fall about 10-12%, or US$700 million, in addition to FDI inflows. To cope with the creation of the FTAA, Korea should seek various counteractions such as strengthening its policy towards FTAs with large major economies, transforming its export structure to focus on intermediate products instead of finished ones, and expanding investment in Latin America.

담뱃불 발화특성에 관한 실험적 연구

윤인수(ln su Yun),김병선(Byung seon Kim),조원철(Won Cheol Cho),이태식(Tae Shik Lee) 한국방재안전학회 2008 한국방재안전학회 논문집 Vol.1 No.1

매년 감소하고 있는 금연 인구추세에도 불구하고 담뱃불은 전체 화재원인의 10% 이상을 차지하고 있다. 본 연구의 목적은 담뱃불에 의한 발화특성을 실험을 통하여 분석하는 것이다. 이를 위해 본 연구에서는 2006년 인천에서 담뱃불로 인해 발생된 것으로 추정되는 화재사건에 대한 사례를 분석하였으며, 대표적인 착화물의 사례로서 골판지, 가솔린, 래커 시너, 방수천, PVC 연질시트 및 폴리에틸렌에 대해 발화 실험을 실시하였다. 실험결과 골판지의 경우 담뱃불로 인하여 발화되었으나 가솔린, 래커 시너, 방수천, PVC 연질시트 및 폴리에틸렌의 경우 담뱃불로 인해 발화되지 못 하였다. 대부분의 화재원인 조사자들이 가솔린이나 천막재가 담뱃불로 인해 발화되었을 거라고 주장해 온 것에 반해 본 연구에서는 이러한 주장이 타당성이 없을 수 있다는 것을 실험적으로 입증하였다. The cigarette holds more than 10 percents of the entire fire accidents despite the number of smokers rapidly decreases every year. The purpose of this study is to examine the ignition characteristics of cigarette by experimentation. This study analyzed the cases of fires inferred that they were caused by cigarette in lncheon during 2006. As the representative ignition materials, corrugated board, gasoline, lacquer thinner, tarpaulin, flexible PVC sheet, and poly ethylene were tested. In this experimentation, the corrugated board was ignited by cigarette. However gasoline, lacquer thinner, tarpaulin, flexible PVC sheet, and poly ethylene were seldom ignited. Meanwhile most fire investigators have argued that oils and tents were ignited by cigarette, but this study experimentally proved that such an argument might be ungrounded.

Nanostructured Titania Electrodes for Dye-Sensitized Solar Cells

( Wan Ln Lee ),( Yong Joo Kim ),( Sang Do Sung ) 한국공업화학회 2010 한국공업화학회 연구논문 초록집 Vol.2010 No.-

Aging and Cancer : Syndecan-2 functions as a cell surface docking receptor for pro-matrix metalloproteinased-7 at an early stage of colon carcinogenesis

( Hae Ln Park ),( Ji Seon Lee ),( Sang Hwa Yang ),( Heui Young Ryu ),( Ha Won Lee ),( Je Kyung Seong ),( You Jeong Lee ),( Kyeong Cheon Jung ),( Seung Taek Lee ),( Inn Oc Han ),( Hyun Cheol Chung ),( 한국생화학분자생물학회 (구 한국생화학회) 2008 생화학분자생물학회 춘계학술발표논문집 Vol.2008 No.-

구강 편평상피세포암의 처치와 예후에 관한 임상적 연구

정인교(ln Kyo Chung),김태규(Tae Gyu Kim),김종렬(Jong Ryeol Kim),양동규(Dong Gyu Yang),신상훈(Sang Hun Shin),정기돈(Gi Don Chung) 대한구강악안면외과학회 1996 대한구강악안면외과학회지 Vol.22 No.2

This study is aimed to improve the treatment, early diagnosis, prevention and prediction in propgnosis of oral and maxillofacial malignant tumors. The authors investigated about clinincal and histopathologic findings, treatments in 52 cases and survival rate of 23 cases to have been diagnosed and treated in the Department of Oral and Maxillofacial Surgery, College or Dentistry, Pusan National University from the 1st of January, 1986 to the 31th of September, 1993. The results were as follows: 1. Oral and maxillofacial malignant tumors occurred the most between 60~69 years of age and more often in males than females with a ratio 2.5 : 1.71% of patients were visited 3 months after onset of initial symptom and the tumors occurred the most in Stage Ⅳ with 51.9% as 27cases. 2. Surgical therapy was used the most as single therapy. Combined therapy for malignant tumor was executed more than single therapy in Stage Ⅲ, Ⅳ advanced tumor. Surgical and radiation was combined most frequently. 3. Regional neck dissection was operated most frequently for cervical neck nodes. 4. Overall 5 year survival rate of the patients possible to be investigated was 26% and overall 3 year survival rate was 43.5%. 5. The authors considered that higher stage of tumor, existence of combined disease, male than female coued be predicted poor prognosis but not in cell differentiation and age.