서울의 Penicillinase Producing Neisseria gonorrhoeae 발생빈도(1998)

김재홍,김준호,반재용,이정우,황성주,정준규,정성태,강진문,조흔정,홍창의,정혜신,이한승,김이선,이봉길,이종호,선영우,한기덕,윤성필,이성훈,안종성,박석범,문승현,조항래,김형섭,류지호,황재영,박준홍,손상욱 한양대학교 의과대학 2001 한양의대 학술지 Vol.21 No.1

In recent years, gonorrhea has been pandemic and remains one of the most common STDs in the world, especially in developing countries. For the detection of a more effective therapeutic regimen and assessing the prevalence of Penicillinase Producing Neisseria gonorrhoeae(PPNG), we have been trying to study the patients who have visited the Venereal Disease Clinic of Choong-Ku Public Health Center in Seoul since 1980 by menas of the chromogenic cephalosporin method. In 1998, 93 strians of N. genorrhoeae were isolated, among which 60(64.5%) were PPNG. The prevalence of PPNG in Seoul, which had been decreased to 39% in 1996 after a peak of 74.3% in 1993, is increased to 64.5% in 1998.

우리나라 종합잡지의 역사적 고찰

이용례 明知大學校 圖書館學科 1987 圖書館學論集 Vol.1 No.1

短杭의 引拔低抗力과 SCALE EFFECT에 關한 實驗的 硏究

李裕根,尹龍喆,李炯來 진주산업대학교 1992 論文集 Vol.31 No.-

本 實驗은 杭의 직경을 변화시킨 경우 短杭의 引拔低抗力 實驗的으로 考察했다. 다음은 杭基礎의 引拔低抗力 實驗을 행한 결과를 요약한 것이다. 引拔低抗力과 變位量과의 關係에 있어서 地盤의 다짐정도에 따라 전체적 경향이 다르게 나타났다. 이는 전단대발생 Pattern의 차이가 원인인 것으로 생각할 수 있었지만 여기에 대한 상세한 것은 금후 발표할 예정이다. 그리고 地盤의 다짐정도가 클수록 限界 引拔低抗力은 根入深에 대해서 一次函數的으로 증가했지만 杭의 직경이 클수록 감소했다. 이는 杭의 Scale effect가 원인인 것으로 생각할 수 있지만 금후 상세한 검토를 행할 필요가 있다. 本 實驗에 있어서는 杭의 直徑 43㎜경우를 제외하면 Loose sand상태에 대해서만 實驗을 행하고 지금까지 연구발표된 결과를 토대로 고찰을 행했지만 금후 Dense sand 상태에서의 실험도 행할 필요가 있다. 또 실제 전단대발생에 의한 진행성파괴에 대해서 상세히 고찰할 필요가 있다. The uplift capacity and the scale effect of short piles are important to the rational design of pile foundation. Therefore, this paper discribes the results of an experimental consideration on the uplift capacity and scale effect of short pile. The Pile used in the pull-out test is the cylindrical concrete piles. Pile diameter is 43㎜, 66㎜ and 83㎜. The pile length of embedment is 20㎝~40㎝. Pull-out tests were carried out using sand have two densities : loose these results, the following conclusions were obtained : The rate of increase in ultimate uplift capacity become larger due to the increase in the pile length of the embedment and the unit weight of sand. The larger the pile diameter is, the larger ultimate uplift capacity increases. The larger the pile diameter is, the smaller ultimate uplift capacity per unit area decreases.

이방성 및 직교이방성 재료에 대한 경계요소법(BEM) 해석과 균열에 대한 응력확대계수 해석

이갑래,최용식 成均館大學校 科學技術硏究所 1990 論文集 Vol.41 No.1

According to the developments of various composite materials, it seems to be very important to evaluate the strength and fracture behavior of composite materials. When the composite material is considered as anisotropic and orthotropic material, the characteristic equations of anisotropic and orthotropic have complex roots. If characteristic roots are equal, the fundamental solutions of BEM become singular. This paper analyse the fundamental solutions of the singular problem of orthotropic material using the method of mapping to isotropic material. And stress and displacement fields become singular when the characteristic roots are equal. In consideration of these singular problems, the fundamental solutions of BEM and stress intensity factors are analysed systematically for the anisotropic and orthotropic materials.

韓國 在來된장중 Aflatoxin 含量의 變化

李瑞來,金容華 梨花女子大學校 韓國生活科學硏究院 1983 韓國生活科學硏究院 論叢 Vol.31 No.-

한국식 在來된장의 製造 및 調理과정 중 發癌性물질인 aflatoxin의 含量 변화를 알기 위하여 일련의 실험을 수행한 바 그 결과를 다음과 같이 요약한다. 1) 메주제조 중 Aspergillus flavus ATCC 155117균주로 汚染시킨 경우 aflatoxin함량은 20일만에최고에 달한 후 다시 감소하였으며 햇볕 건조에 의하여 다시 1/2로 감소하여 乾物기준 9ppm에 도달하였다. 2) Aflatoxin으로 汚染된 메주로 醬類를 담그는 경우 된장과 간장으로의 aflatoxin 移行비율은 9:1로 나타났고 3개월간의 된장 熟成중 그의 30%가 더 감소되었다. 3) 된장을 국과 찌개로 調理하는 경우 15∼45분간 加熱에 의하여 aflatoxin含量은 30∼50%가 분해되었다. In order to investigate the changes of aflatoxin content during the preparation and cooking processes of Korean-style soybean paste, some experiments were carried out to obtain the following results. 1) The aflatoxin content in Meju artificially inoculated with Aspergillus flavus ATCC 155117 strain reached the maximum level 20 days after shaping and decreased thereafter. Its content decreased further to half by sun-drying the Meju, reaching 9 ppm on a dry weight basis. 2) In soaking the dried Meju in saline for 3 months, the aflatoxin was partitioned into soybean paste and soy sauce in the ratio of 9:1. After ripening the paste for 3 months, 30% of the aflatoxin disappeared. 3) In cooking the soybean paste as a soup or a soup, 30-50% of the aflatoxin disappeared by boiling for 14-45 minutes.

學習者들의 生活스트레스尺度 開發

金龍來,李惠苑 弘益大學校 敎育硏究所 1995 敎育硏究論叢 Vol.- No.12

등간격 병진스프링으로 지지되는 단순곡선보의 고유진동수해석

조정래,이용운,윤한익 동의대학교 산업기술개발연구소 2000 産業技術硏究誌 Vol.14 No.-

The transfer matrix method is used to study the influence of the translational spring support on the transverse vibration of the simple curved beam. The translational spring supports are constituted by the middle point and the nine points at regular interval on the curved beam. The influence of the translational spring constants on the natural frequency of the simple curved beam is very much at 1st and 3rd mode and the natural frequency is augmented as increasing of the translational spring constants. Since the amplitude of the curved beam is small at high mode, the translational spring constant has a little influence on the transverse vibration of the simple curved beam. The simple curved beam supported elastically at middle point has high frequency than that supported elastically at nine points at regular interval. If the translational spring constant supporting the simple curved beam become very large, and then since the elastic support is similar to the rigid support, the transverse natural frequencies increase very much at the each mode of the simple curved beam.

rhBMP-2가 저칼슘식이 투여 백서의 골결손부 이유에 미치는 영향

최용석,황의환,이상래 大韓口腔顎顔面 放射線學會 2004 Imaging Science in Dentistry Vol.34 No.1

Purpose : To investigate the effect of rhBMP-2 on the healing of bone defect in the low calcium diet rat. Materials and Methods : To prepare the experimental model, control group was fed a normal diet and experimental group was fed a low calcium diet for 3 weeks. And then, 4 mm bicortical perforated bone defect was made on mandibular body of each rats. Experimental group was subdivided into two groups; experimental group 1 (rats given a low calcium diet before and after bone defect) and experimental group 2 (rats given a low calcium diet before and after bone defect with rhBMP-2 application). At 1, 3, 5 and 7 weeks after bone defect formation, the rats Were terminated. The healing of bone defect was assessed by three-dimensional computerized tomography, soft xray radiography, and histopathological examination. Results : The wound healing of the bone defect for control group, experimental group 1, and experimental group 2 showed a increase from 3 weeks after bone defect formation. The experimental group 2 showed a more increase in healing amount than control group and experimental group 1 from 5 weeks after bone defect formation and the experimental group 2 showed a complete recovery of bone defect at 7 weeks after bone defect formation. Conclusion : The healing process of bone defect is accelerated by rhBMP-2 application in the low calcium diet rats.

評價的 次元의 態度 構造探索 및 適應과의 關係 硏究

金龍來,李惠苑 弘益大學校 敎育硏究所 1996 敎育硏究論叢 Vol.- No.13

신경회로망을 이용한 인쇄체 한글 인식에 관한 연구

장래복,이근영 成均館大學校 科學技術硏究所 1992 論文集 Vol.43 No.1

본 논문에서는 신경회로망을 이용한 인쇄체 한글 문자의 인식에 대해서 연구하였다. 입력 방식은 스캐너를 사용하였고 문자 분리 및 세선화과정을 거친후 자모를 분리하였다. 배율 조정과 음영부호 방식을 사용하여 데이터를 압축하였고 모음과 자음을 분리하여 역전파 신경회로망을 학습하였으며, 실험 결과 자음과 모음 각각에 대하여 98%의 인식율을 얻을 수 있었다. This paper describes recognition of printed KOREAN characters using multilayer perceptrons. Scanned image is segmented and thinned as preprocessings. Through normalizing the size of the character patterns and obtaining shadow codes from each segmented patterns, input data of the neural network are reduced significantly. Two separate networks are used to train the vowel and consonant patterns respectively and trained by using back propagation algorithm. Result of this method showed same recognition rate of about 98% on both vowel and consonant characters.