해조류 용매별 추출물의 항돌연변이원성

김봉오,박제석,오명철,현재석,김재하,오창경,김수현 濟州大學校工科大學産業技術硏究所 1996 尖端技術硏究所論文集 Vol.7 No.2

톳, 미역 및 다시마를 용매별로 추출하여 이들 추출물의 항돌연변이원성을 검색하였다. 톳 용매별 추출물의 MMS에 대한 항돌연변이 효과는 TA100 균주에서 헥산, 에탄올, 에칠에테르 추출물 순으로 높았고, TA102 균주에서 헥산, 에칠에테르, 에탄올 순으로 높았으나, 미역 및 다시마 추출물은 항돌연변이원성이 거의 없었다. ICR191에 대한 항돌연변이 효과는 시험된 모든 시료에 대한 에탄을 추출물이 높은 항돌연변이 효과를 나타내었고, 에칠에테르와 헥산 추출물은 물 추출물보다도 낮은 효과를 나타냈다. 그러나 톳 추출물은 시험된 모든 용매 추출물에서 60% 이상의 높은 항돌연변이 원성을 나타내어 ICR-191에 의해 유도되는 돌연변이 원성을 저해하는 물질이 수용성 및 비수용성에 걸쳐 다양함을 나타내었다. 한편, 미역, 다시마 및 톳 추출물의 sodium azide에 대한 항돌연변이원성은 없는 것으로 나타났다. Desmutagenic effects against methyl methanesulfonate(MMS)-, 2-methoxy-6-chloro-9-〔3-[2-chloroethyl〕aminopropylamino〕acridine(ICR191)- and sodium azide-induced mutations by the extracts from Hizikia fusiforme. Laminaria japonica and Undaria pinnatifida with different solvents were investigated. The solvent extracts from Hizikia fusiforme were the highest desmutagenic effect against MMS in n-hexane and against ICR191 in ethanol extract. but no against sodium azide in all solvent extracts tested. While the solvent extracts from Undaria pinnatifida and Laminaria japonica were the highest against ICR191 in ethanol extract. but no against sodium azide and MMS in all solvent extracts tested. Moreover. all the solvent extracts from Laminaria japonica were inhibited 60% or more ICR191-induced mutations.

스마트폰 블루투스 통신을 사용한 로봇 제어

김영진;김광우;김가덕;윤호성;김태공;서재현 인제대학교 2012 仁濟論叢 Vol.27 No.1

SLIS(Software License Integrated Solution) is composed of the 6 parts, Server Agent, Web Server, Client Agent, Client Manager, Service, and Install Shield. For the most part of the project is developed based on MFC platform except for the one, Client Manager, which is built on DDK(Driver Development Kit) and ASP. NET platform. Client Agent program installed on a customer's computer is implemented in 14 different classes. Its main function is able to limit and uninstall the purchased software by using teminateProcess. The purchased softwares expiration dates on customer's computer is being monitored by both Server agent and Client software itself. Client Manager hides the process of Client Agent program which shouldn't be killed by manipulating Process List in Kernel through DDK. To do this, Client Manager is internally implanted and registered in Windows Service to be ran as a part of windows system.

심경병성 근이영양증에 동반된 심근병증의 단기 성장호르몬 치료효과 1례

변기현,김동수,나준식,오수환,김인재,홍범기,권혁문,남수연,강성웅,김현승 대한순환기학회 1998 Korean Circulation Journal Vol.28 No.8

보문 : Polyethylene Film포장이 포도 Sheridan의 저장력에 미치는 영향

남상영(Sang Young Nam),김경미(Kyoung Mi Kim),박종천(Jong Chun Park),주선종(Seon Jong Joo),정재현(Jai Hyun Jung) 한국식품저장유통학회(구 한국농산물저장유통학회) 1997 한국식품저장유통학회지 Vol.4 No.1

랫드에서 단일시험법을 이용한 반하 물추출물의 생식독성시험

이기남,유욱준,백인정,연정민,남상섭,이범준,남상윤,김윤배,강현규,안병우,김대중,황방연,노재섭,홍정섭,성하정,김순선,조대현,윤영원 충북대학교 동물의학연구소 2006 Journal of Biomedical and Translational Research Vol.7 No.1

본문참조

부력탐구 단원 개발과 지도 탐색

김금자,김현재 仁川敎育大學校 科學敎育硏究所 1998 과학교육논총 Vol.10 No.-

As young children develop intellectually they begin to understand the physical principles of buoyancy that explain the conditions under which objects float or sink. Under Piaget's system of intellectual development, this understanding occurs when the learner reaches the concrete operational level of thinking. The purpose of this study is to develop and teach buoyancy unit is underdeveloped in the primary science education. This study was carried out as follows : 1) The concepts of buoyancy unit are composed of the experience science which the student can easily acquire in every day life. 2) The individual or cooperative learning and holistic learning approach were taken as instructional methods. This study suggests that buoyancy unit which can give not only children faith and confidence but also participant actively in the unit with interest and concern. Then, the new instructionals or cooperative learning and holistic learning approach should be applied to the modernization of open education in practical and effective method.

건축공사시방서에서의 KS규격의 국제인증방안에 관한 연구

김경식,이재섭,김용수,이규진,조용훈,최완철,전재열,이현수,구재동,이기환 대한건축학회 2004 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.24 No.1

The purpose of this research is make out construction specifications for International Construction. Using off-shore products incur cost increase and longer delivery term of construction. and inconvenient on International Construction. Expand the range of additional local products conforming to performance. Life Cycle Cost. maintainability. operability. user's acceptability, etc.. And this study is suggest the standard formats and the techniques for construction specification.

상악동으로 이소맹출한 견치

김현옥,최병재,이종갑 대한소아치과학회 2000 大韓小兒齒科學會誌 Vol.27 No.4

구강 내에서 치아가 이소맹출되는 것은 흔히 있는 반면에 구강외 다른 부위로의 이소맹출은 드물다. 예를 들어 비강, 턱, 하악과두, 관상돌기, 안와 또는 상악동으로 이소맹출할 수 있으며 그 원인은 불명확한데 구개열과 같은 발육장애, 외상이나 낭종에 의한 치아변위, 상악감염, 유전, 총생 또는 치밀골 등의 원인 요소가 논의되고 있지만 대부분의 증례에서 정확한 원인이 규명되지는 않았다. 치아가 상악동으로 이소맹출한 경우 무증상일 수 있지만 심각한 병적문제를 야기할 수 있다. 본 증례는 6세 1개월 남환아로 어금니가 아프다는 주소로 연세대학교 치과대학병원 소아치과에 내원하였다. 의과병력과 치과병력조사에서 특이한 사항은 없었고 통상적인 보존치료후 주기적인 임상 및 방사선 사진 검사에서 상악 좌, 우 견치의 맹출경로의 이상소견을 보였다. 13세 7개월에 촬영한 파노라마 방사선 사진에서 상악 좌, 우측 견치가 상악동으로 이소맹출되었으며 Caldwell Luc 수술법으로 제거하였다. 환자는 동통이나 불편감 등을 호소하지 않았으며 종창이나 지각과민 등의 구강내 이상소견은 없었다. 이소맹출되는 치아는 영구치, 유치 및 과잉치일 수 있으며 대부분의 과잉치는 무증상으로 주로 주기적인 방사선 검사시 발견될 수 있다. 정확한 진단 및 치료계획을 세우기 위하여 주기적인 구강 및 방사선 사진 검사가 필요하다. Ectopic eruption of a tooth into the oral environment occurs commonly whereas ectopic eruption of a tooth into other sites is rare. Those that have been reported include the nasal cavity, chin mandibular condyles, coronoid processes, orbits and maxillary sinus. The etiologic factors of ectopic eruption are developmental disturbances such as cleft palate and teeth displaced by trauma or cysts, maxillary infection, genetic factors, crowding and exceptionally dense bone. In many cases, however, the etiology cannot be identified. Eruption of the teeth into the maxillary sinus is uncommon, however, the identification of such teeth can be important since they have potential to cause considerable morbidity. The definitive treatment is surgical removal of the teeth. A 7 year-old-boy visited the Department of Pediatric Dentistry, College of Dentistry, Yonsei University for treatment of dental caries. The abnormal erupting paths of the left and right maxillary canines were found during routine panoramic radiographic investigations. A panoramic radiograph taken at 13 years old revealed that two maxillary canines were located into the sinus. The teeth were extracted the Caldwell-Luc approach.

진주산업대학교의 樹木相과 管理에 관한 소고

김우룡,안현철,조현서,추갑철,송재철 진주산업대학교 농업기술연구소 2001 農業技術硏究所報 Vol.14 No.-

This study was carried out to investigate the woody plants of the Chinju National University. Field survey was carried out 3 times from July to October 2000. The results obtained from this study were as follows : 1. Among 145 kinds, 88 genera, 53 families of total woody plants, the needle-leaved trees of 28 kinds, 15 genera, 6 families and broad-leaved trees of 117 kinds, 73 genera 47 families were found. 2. Among the 4 investigated districts, area II showed the most abundant woody plants(92 kinds). 3. The endemic woody plants to Korea in Chinju National University were 6 species, They are Pinus koraiensis, Abies koreana, Buxus microphylla var. koreana, Cornus walteri, Carpinus coreana, Gleditsia joponica var. koraiensis. 4. The species of rare and endangered plants were 6 species, There are Corylopsis coreana, Juniperus chinensis var. sargentii, Koelreuteria paniculata, Abies koreana, Magnolia kobus, Tsuga siebodii and The exotic woody plants in korea were 59 kinds 41 genera 28 families. 5. The most abundant populations were Thea sinensis(271 populations) and Ilex crenata(247 populations).

효소 및 추출을 이용한 전분이 함유된 고분자 필름의 생분해도 측정

김재현,박태현,한귀영 성균관대학교 생명과학자원연구소 1994 生命資源科學硏究 Vol.1 No.1

Various methods were proposed for the measurement of biodegradability of polymer materials by American Society for Testing and Materials(ASTM). In those methods, carbon dioxide evolution, oxygen consumption, and the weight loss of polymer are measured for the evaluation of biodegadability when microorganisms grow by using the polymer material as the only carbon source. Since a month or longer time is needed to measure the quantities, a rapid quantitative mathod is required to be developed. We used α-amylase for determining the biodegradability of starch-filled polyethylene film: however, the enzyme reaction was so slow. Further studies on the reaction conditions are necessary for the rapid completion of the reaction. Therefore, starch content in the film was measured for the evaluation of biodegradability on the assumption that starch is a perfect biodegradable material. NaOH solution was used for the extraction of starch from the film and the weight loss of the film was measured.