연구개의 이소성 뇌조직 - 1예 보고-

최현주,이연수,김영신,이교영,강창석,심상인 대한병리학회 1998 Journal of Pathology and Translational Medicine Vol.32 No.11

온실재배와 노지재배한 금산 깻잎의 품질 특성과 향기성분

현광욱,구교철,장정호,이재곤,김미리,이종수 한국식품저장유통학회 ( 구 한국농산물저장유통학회 ) 2004 한국식품저장유통학회지 Vol.11 No.1

깻잎을 이용한 건강 식품을 개발하고자 먼저 깻잎의 주산지인 금산에서 5월 온실재배한 깻잎과 8월 노지재배한 깻잎들의 품질특성과 향기성분을 조사하였다. 시료깻잎 모두 4.0%의 조단백질과 0.8%의 조지방을 함유하고 있었고, 플라보노이드의 함량은 온실재배 깻잎 25.2%, 노지재배 깻잎 26.5%로 시료깻잎간에 큰 차이는 나타나지 않았으며 조사포닌 함량도 2,7%와 2,8%로 비슷하였다. 시료깻잎의 효소 활성은 오직 알칼리성 단백질 분해효소 활성만이 8월 노지재배 깻잎에서만 물 추출물 7.1 unit, 에탄올 추출불 11.8 unit을 보였고 기타 효소 활성은 없었다. 8월 노지재배 깻잎의 조직감 특성으로 먼저 견고성과 탄력성 등은 잎의 상층부와 중층부 보다 잎받침을 포함하는 하층부에서 높았고 응집성은 하층부가 약간 약하였으며 5월 온실재배 깻잎은 씹힘성이 다서 낮았을 뿐 노지재배 깻잎과 비슷하였다. 5월 온실재배와 8월 노지재배 깻잎에는 1-octen-3-ol, linalool, β-caryorhyllene, α-caryophyllene, α-famesene, perilla ketone, nerolidol, eugenol. α-cadinol 등 14종∼15종의 향기성분을 함유하고 있었고 주요한 향기성분은 perilla ketone 이었다. Quality and flavor compounds of perilla leaves cultivated in greenhouse(May) and field (August) in Geumsan province were investigated and compared. All perilla leaves contained 4.0% crude protein and 0.8% crude lipid. C겨de flavonoid contents of perilla leaves cultivated in greenhouse and field showed 25.2% and 26.5%, respectively and each crude saponin content was cultivated in field. Hardness and chewness of bottom parts of field-perilla leaves were higher than those of top and middle part, whereas the cohesiveness of top parts and middle parts of perilla leaves were higher than that of bottom part. Furthermore, texture properties of greenhouse-perilla leaves were similar with those of field-perilla leaves except chewness. Nine kind of flavor compounds such as 1-octen-3-ol, linalool, β-caryophyllene, α-caryophylene, α-franesene, perilla ketone, nerolidol, eugennl, α-cadinol were identified in greenhouse-perilla and field-perilla leaves, showing that main flavor compound was perilla ketone.

조류생산잠재력에 의한 진양호의 생물학적 수질평가

주현수,김진,박종천,정원석,이원교,이우범 國立 麗水大學校 環境問題硏究所 2000 環境硏究論文集 Vol.3 No.-

On filtrated and autoclaved water samples from Lake Jinyang, algal growth potential(AGP) test using Selenastrum capricornutum Printz were performed from February, 1999 to October, 1999 in order to assess fertility potential of the lake and to identify possible limiting nutrients. Algal growth potentials of the filtrated and filtrated after autoclaved samples were 0.018 ㎎/ℓ ~9.965 ㎎/ℓ and 0.018 ㎎/ℓ ~28.788㎎/ℓ respectively during surveyed period. AGP of the filtrated after autoclaved were higher than those of the filtrated only except some specific stations. The points of maximum growth were measured after addition of N, P and unenriched samples (control). The limiting factor was nitrogen only at site 5 in spring and phosphate appeared to be the major limiting nutrients in spike test throughout the year, especially during spring and autumn. Accoding to trophic level by Sudo(1980), the water quality of lake Jinyang were estimated mesotrophic at site 2, 4, 5, 6 in spring, at site 3, 6 in summer and at site 6 in autumn but all other sites were oligotrophic. But it is suggested that if we have not manigement of lake Jinyang, the water quality is possible to convert eutrophic.

Plugger 삽입깊이에 따른 Continuous Wave 가압법의 치근단 폐쇄효과

김현영,김성교 대한치과보존학회 2001 Restorative Dentistry & Endodontics Vol.26 No.4

본 연구는 Continuous Wave 가압법으로 근관충전시 직선 근관과 만곡 근관에서 plgger 삽입깊이에 따른 치근단폐쇄효과를 평가하고자 하였다. 최근에 발거된 62개의 단근치를 이용하였으며 방사선사진으로 판단한 근관 만곡도가 5도 이하인 직선 근관과 25±10도인 만곡 근관 각 30개와 대조군 2개를 실험재료로 사용하였다. 06 경사도의 전동 Ni-Ti 파일(ProFile Maillefer Co., Dentsply, Switzerland)를 사용하여 근관을 40번 크기까지 확대한 후, plugger 삽입깊이에 따라 치근단 3mm, 5mm 및 7mm의 3개의 군으로 나누었다. 모든 근관은 System-B 열원과 Buchanan plugger를 이용한 Continous Wave 가압법으로 충전하였으며 3일 동안 2% 메틸렌 블루 용액에 침적한 후 저속 다이아몬드 절단기(Isomet, Buehler CO., U.S.A.)를 사용하여 치근단에서부터 1mm 씩 순차적으로 횡절단하였다. 입체현미경(SZPT 40. Olympus Opitical Co., Ltd., Tokyo, Japan)하에서 상을 40배 확대하여 색소침투 유무를 확인하고 상분석 프로그램(Scion Image, Scion Crop., U.S.A.)사용하여 선 측정법과 원주 측정법으로 미세누출을 평가하여 다음과 같은 결과를 얻었다. 1. 선 측정법과 원주 측정법 공히, 치근단 3mm까지 plugger를 삽입한 군이 치근단 7mm 군에 비해 우수한 치근단 폐쇄 효과를 나타내었다(p<0.05). 2. 두 측정법 공히, 치근단 3mm까지 plugger를 삽입한 군이 치근단 5mm 군에 비해 적은 색소침투를 나타내었으나 통계적으로 유의한 차이를 나타내지는 않았다.(p>0.05). 3. 두 측정법 공히, 치근단 5mm까지 plugger를 삽입한 군이 치근단 7mm 군에 비해 적은 색소침투를 나타내었으나 통계적으로 유의한 차이를 나타내지는 않았다(p>0.05). 4. 두 측정법 모두에서, 만곡 근관에서 충전한 군이 직선근관에서 충전한 군에 비해 다소 많은 색소침투를 나타내었으나 통계적으로 유의한 차이를 나타내지는 않았다.(p>0.05)

複合微生物을 利用한 간장開發에 관한 硏究

朱鉉圭,李敎喆 建國大學校附設 農業資源開發硏究所 1980 論文集 Vol.5 No.-

韓國 고유의 간장을 開發코자 Aspergillus oryzae, Aspergillus niger 및 Rhizopus delemar와 Bacillus natto 菌으로 製麴하고 kogi의 配合比를 달리하여 간장을 담구고 熟成(7週) 過程 중에 化學成分의 調査와 관능검사를 실시한 結果는 다음과 같다. 1) 간장시료 중의 아미노태 질소함량은 혼합미생물시험구(0.57∼0.79%)가 Asp.oryzae만의 대조구(0.48%)보다 많았고 그중 Asp. oryzae+Rhiz. delemar 시험구(0.79%)가 가장 많았으며 Asp. niger의 혼합은 Rhiz. delemar보다 아미노태 질소의 유리량이 적었다. 2) 혼합미생물처리구(4.37∼7.96%)의 환원당량은 대조구(3.53%)보다 많았으며 그중 Asp. niger+Rhiz. delemar시험구가 제일 많았다. Asp. oryzae에 Rhiz. delemar의 복합은 Asp.niger보다 환원당량이 많았다. 3) 혼합미생물처리구의 총산량(0.38∼0.82%)은 대조구(0.33%)보다 많았고 그중 Asp. oryzae+Rhiz. delemar구(0.81%)와 Asp. oryzae+Rhiz. delemar+Bacillus nato구(0.82%)가 제일 많았으며 Asp. oryzae+Rhiz. delemar구는 Asp. oryzae+Asp. niger구보다 더 生酸量이 많았다. 4) 관능검사의 총점수에서 대조구(25점)보다 많은 시험구는 3구인데 그중 Asp. oryzae+Rhiz. delemar+Bacillus nato구(30점)가 가장 良好하고 다음 Asp. oryzae+Asp. niger, Asp. oryzae+Asp. niger+Rhiz. delemar구(29점)이다. In order to develop better soy-sauce, the research made different kinds of Koji, using microorganism such as Aspergillus oryzae, Aspergillus niger, Rhizopus delemar. and Bacillus natto each. Several kinds of soy-sauce, in which Kojis were mixed by different rate, were compared each other for their changes of chemical components during fermentation period (Seven weeks) and their quality examined by panel test. The results were summarized as follows; 1. The soy-sauce using the mixed koji, Asp. oryzae+Rhiz, delemar., showed the the highest NH₂-N content by 0.79% and the soy-sauce using the Koji made by composite microorganism showed higher NH₂-N content (0.57∼0.79%) than that of standard soy-sauce using Asp. oryzae Koji (0.48%). The content of NH₂-N in soy-sauce of Asp. oryzae+Asp. niger Koji was less than in soy-sauce of Asp. oryzae+Rhiz. delemar Koji. 2. The content of reducing sugar in soy-sauce was highest when the mixed Koji, Asp. niger+Rhiz, delemar was used, the nest was the composite microorganism Koji by 4.37∼7.96%, and the lowest was the standard commercial Koji by 3.53%. The mixed Koji using Asp. oryzae and Rhiz. delemar showed higher reducing sugar content than that of Asp. oryzae+Asp. niger Koji. 3. Total acid content in soy-sauce was highest when the mixed Kojis, Asp. oryzae+Rhiz. delemar and Asp. oryzae+Rhiz. delemar+Baillus natto., both by 0.81% and 0.82%, respectively. Total acid content in soy-sauce using composite microorganism Koji showed higher(0.38∼0.82%)than that of standard Koji(0.33%), and Asp. oryzae+Rhiz. delemar showed higher value than Asp. oryzae.+Asp.niger in total acidcontent. 4. Panel test score was highest for the soy-sauce used the mixed Koji, Asp. oryzae+Rhiz. delemar+Bacillus natto and the two kinds of soy-sauce used the mixed Koji, Asp. oryzae+Asp. niger and Asp. oryzae+Asp. niger+Rhiz, delemar., were judged as better than standard soy-sauce.

공공건설공사의 사업단계별 관리업무 순위 결정 : 책임감리와 건설사업관리를 중심으로

김양현,구교진,현창택 대한건축학회 2004 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.24 No.1

As the construction projects have become more complicated and larger in scale, management have been more important in construction. But owner in public sector usually commits construction supervision to the private management firms. So there is a big problem that Supervision doesn't control cost, time, contract and so on. The purpose of this study is to select the priority decision of construction management tasks according to project phases, especially in public sector. This study may help owner when owner contracts management service with private management firms.

도파관 내의 음파산란 해석에 있어서 Helmhortz 방정식의 정적 한계에 관한 연구

정현교,최경 江原大學校 産業技術硏究所 1989 産業技術硏究 Vol.9 No.-

In this paper, the static limit of Helmhortz equation is discussed in the analysis of acoustic wave scattering in a waveguide. Boundary integral equation method is used to formulate the scattering process in the exerior of the scatterer and finite element method in the interior of the scatterer. And hybrid Ray-Mode Method is used the provide the Green's function of the waveguide. The proposed algorithm is applied to a sample poblem with arbitrary scatterer in a waveguide. The results are compared with those of Laplace's equation which is the governing equation in the static problems.

초중등학생의 구강보건관리에 대한 인식도 조사

김교웅,남철현 韓國學校保健學會 2000 韓國學校保健學會誌 Vol.13 No.2

This study was conducted to prevent oral disease of primary school, middle school, and high school students, providing basic data for the development of oral health education programs. Data were collected from 898 primary school, middle school, and high school students from March 2, 1999 to May 31, 1999. The results of this study are summarized as follows; 1) The subjects of this study were primary school students(32.6%), middle school students(33.0%), and high school students(34.4%), middle school boys were 53.2%, and high school boys were 52.6%. 2) According to the self-judgement of oral health, primary school students were better than middle/high school students and boy students were better than girl students. 63.5% of primary school students and 57.8% of middle/high school students brushed their teeth once or twice a day. 3) 76.3% of middle/high school students and 63.5% of primary school students experienced dental caries. Girl students were higher than boy students in experiencing dental caries. 35.9% of primary school students and 27.6% of middle/high school students experienced periodontal disease. 4) 22.9% of primary school students and 7.9% of middle/high school students received oral examinations periodically. Girl students showed a higher rate than boy students in primary school, while boy students showed a higher rate than girl students in middle/high school. 5) Explaining to the reasons for reluctant visits to dental hospitals and clinics, 'no time to go' was highest(22.9% of primary school students; 27.4% of middle/high school students) and the rate of 'feeling scared' was second highest. Middle/high school students were more reluctant to visit dental hospitals and clinics than primary school students. In case of problematic symptoms in the mouth, the rate of 'feeling painful or cold in teeth when eating cold or hot foods' was highest. 71.3% of primary school students was concerned about oral health, while 68.6% or middle/high school students was concerned about it. 6) In gathering to the sources of information on oral health, the rate or medical institutions was highest. (30.0%) in primary school students, while the rate of family members or persons around them was highest in middle/high school students. 7) 54.9% of primary school students received oral health education, while 13.1% of middle/high school students received it. Only 4.7% of middle school and high school girls received it. In relation to dental health education, the rate of 'possibility of prevention of oral caries or disease of the gum' was highest. 79.5% of primary school students and 80.3% or middle school students answered that they would attend oral health education. 8) 60.4% or primary school students and 60.2% of middle/high school students think the purpose of oral health is to prevent dental caries and disease of the gums. In preventing dental caries, 78.8% of primary 88.4% of primary school students and 88.8% or middle/high school thought that brushing one's teeth was effective and 64.1% or primary school students and 50.7% of middle school students thought that the use of toothpaste containing fluoride was effective. In preventing periodontal disease, 91.1% of primary school 72.4% of primary school students and 70.3% of middle/high school students thought that teeth cleaning was effective. 9) 16.0% of middle school students and 12.7% of high school students thought that their oral health condition was healthy. According to individual experiences in dental treatment, the rate of experience of middle school students was higher than that of high school students. 12.7% of middle school students received oral examinations periodically, while only 3.3% of high school students did so. 10) In cases of 'having no problematic symptoms in the mouth' and 'concerns about oral health', the rate of middle school students was higher than that of high school students. In gathering obtaining information on oral health, the rate of obtaining it through broadcast media including TV, Radio, etc. was highest in middle school students, while the rate of obtaining it through family members or persons around them was highest in high school students. 11) 81.7% of middle school students have not received oral health education. In case of girl students. 97.3% have not received it in high school students. 85.6% of middle school students and 87.2% of high school students think that oral health education is necessary. 12) According to the knowledge level or oral health, the point of high school students(26.33±2.33) was similar to the point of middle school students(26.23±2.30). It appeared that the point of primary school students was highest(26.35±2.50). The more concerned about oral health the students were the higher the knowledge level of oral health was. In conclusion, the middle/high school students' knowledge level of oral health was lower than primary school students. The rate of middle/high school students' experience in oral health education was too low. Therefore, it is necessary to intensify oral health education for middle/high school students. Especially, the necessity of oral health education to girl students is strongly recommended. Developing an oral health education program for primary school, middle school, and high school students, related public authority and organizations, teachers, and dentists must actively make efforts together in order to maintain healthy teeth through having students prevent dental caries and periodontal disease.

重크롬酸 稀薄溶液의 電解還元

金敎秀,安宰賢 嶺南大學校 工業技術硏究所 1988 연구보고 Vol.16 No.2

This study provides the optimum condition for the eleclrolytic reduction of dilute potassium dichromate solution. The materials used for electrodes were Pb, Ni, C, Fe and stainless steel. The reduction was very rapidly carried out by the use of the iron anode and cathode. The electrohemical reduction took place mainly on the cathode, and iron dissolved into the solution on the anode. In cathodic reduction, the rate of reduction was also higher, at higher current density and tempraure. The optimum conditions for cathodic current density, electrolysis temperature and time were found to be 3A/d㎡, 40℃, 8hrs respectively. Stainless steel electrode was the best as the cathode and opitimum distance between eleclrodes was 1.5cm.

저서동물을 이용한 진양호 유입하천의 수질평가

주현수,박종천,이원교 國立 麗水大學校 環境問題硏究所 1999 環境硏究論文集 Vol.2 No.-

This study was conducted to evaluate the biological water quality by aquatic benthos community analysis in the upper stream of Lake Jinyang of Kyungsangnamdo province. The total of benthic animal during surveyed period was indentified in all sites 31 species, 31 genera, 27 famillies 15 orders 7class in 4 phylums; In phylum platyhelmites 1 species, 1genus 1 family 1 order 3 class , in annelida 3 species 3 genera, 3 famillies 3 orders 2 class, in mollesca, 4 species, 4 genera, 3 famillies 3 orders 2 class, and in arthropoda 29 species, 24 genera, 20 famillies 8 orders 2 class were recorded. According to the analysis of biological indices of dominance index(DI), water quality of majority was either ? -mesosaprobic or polysaprobic but site 1 and 4 were polysaprobic at all seasons. In case of diversity index(H'). however, water quality in all sites were polysaprobic.