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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.
당밀의 첨가가 갈근탕박 사일리지의 품질과 산양의 기호성에 미치는 영향
김성복,문계봉,이봉덕,오홍록,배형철,이수기 충남대학교 농업과학연구소 2006 농업과학연구 Vol.33 No.1
Two experiments were conducted to investigate the effects of molasses supplementation to silage materials in ensiling Galgeuntang (herbal medicine) meal on the quality of silage, and its palatability in Korean native goats. In experiment Ⅰ, molasses was added at the levels of 0, 0.5, and 1.0% to Galgeuntang meal with three replicates per treatment. In experiment Ⅱ, three 1.5-yr-old Korean native goats were used to measure palatability. In experiment Ⅰ, lactic acid contents in molasses treatments were significantly(p<0.05) higher, and pH and butyric acid contents were lower than those of non-molasses treatment. In addition, molasses treatment increased total microbial cell counts in MRS medium for lactobacillus, but decreased total microbial cell counts in PDA medium for fungi. Molasses supplementation to silage materials increased in vitro dry matter disappearance. Molasses supplementation tended to increase silage intake in Korean native goat (experiment Ⅱ), but the difference was not significant(p>0.05). It is concluded that molasses supplementation to silage materials in ensiling herbal medicine meal could improve its preservability and palatability, the higher the better.
역사적 문화환경의 효율적 보존방안에 관한 건축계획적 연구(Ⅰ)
최봉문,이건호,이기승,이왕기,최종후 牧園大學校 建築·都市硏究센터 1994 建築·都市環境硏究 Vol.2 No.-
There are two common problems that the mordern cities have. One is to how he citizens are effecially interested in the cultural remains in the cities. The other is to how the people who have the architectural treasure in the cities don't convert these into economical property values, but have a preserving awareness It is the tendency that the historical cultural environment is gradually incorporate into the area of the cities according to rapid increase in papulation and the diffuseness of the city. In this process some people think that the valuable historical architectural treasure is an obstacle in devising the city planning. This thesis is to how effecially preserve and applicate thet Taejon,s historical cultural environment. In this thesis it has made up questions to 1,134persons of Taejon citizents to what extent were rocognizing the local historical archtecural treasure. the questionnaires items were divided under five heads as follows. 1) the cognition about Taejon's historcal architectural treasure 2) The satisfaction to the preservation status 3) the opinion about the application plan The population characteristcs of effective answers were devided into sex, age, education level, occupation, occupation of architecture, duration of residence in Taejon, residential district, etc. The content of questionnaires were analyzed in chapter6 in detail. To preserve the historical cultural environment of cities is troublesome and complicated works right now, but it is our's duties and resposibilities to do necessaily. In this thesis (Ⅰ) it will be find the method to high up the recognition about the historical cultural environment on the basis of this recognition reserch and frame the architectural planning about the effective preservation and application plan.
매크로/마이크로 레벨 볼트 결합 구조물에서의 실험적/해석적 방법을 통한 시스템 특성 비교
김봉석,이성민,이문구,이수훈,Jun Ni,송준엽,이창우,하태호 한국공작기계학회 2006 한국공작기계학회 추계학술대회논문집 Vol.2006 No.-
As the micro technology and miniaturization of a structure and component in the last couple of decades have been concretely realized, the understanding of structural and dynamic characteristics and prediction of dynamic behavior are indispensable to the miniaturized structures and micro machines. This paper shows the effect of dynamic characteristics in bolt-jointed structures by comparing natural frequencies and mode shapes between macro and micro-scale beams through experimental modal analysis and finite element analysis with a1 8 test models by materials, by size, and by joining condition; that is, SS41 and A16061-T651, micro and macro, and monolithic beam and bolt-jointed beam.
양자 키 분배 프로토콜 BB84 와 B92 에서 도청률과 기저의 수에 따른 error rate 비교
이선아 ( Sun-ah Lee ),문봉교 ( Bong-kyo Moon ) 한국정보처리학회 2020 한국정보처리학회 학술대회논문집 Vol.27 No.2
양자 암호통신에서는 키를 실시간으로 안전하게 분배하는 양자 키 분배방식이 핵심이다. 본 논문에서는 양자 키 분배 방식인 BB84 protocol 과 B92 protocol 을 python 으로 구현(이를 Lee’s code 라 명명)한다. 기존에 존재하는 양자 simulator 와 LEE’s code 를 이용해 error rate 의 차이를 두 가지 관점(기저에 따른 차이, 도청률에 따른 차이)에서 비교한다. 이를 바탕으로 어떤 protocol 이 도청자로부터 더 취약한지 알아본 결과, B92 protocol 의 QBER 이 항상 높으므로 도청자를 잡아내기는 쉽지만, 기저가 두 가지 밖에 없으므로 도청자의 공격에는 취약함을 알 수 있다.
한국 주요정신장애의 유병률 및 관련요인 : 2006 전국정신질환역학조사
조맹제,장성만,함봉진,정인원,배안,이영문,안준호,원승희,손정우,홍진표,배재남,이동우,조성진,박종익,이준영,김진영,전홍진,이해우 大韓神經精神醫學會 2009 신경정신의학 Vol.48 No.3
Objectives The aims of this study are to estimate the prevalence of the DSM-IV psychiatric disorders in the Korean population using the Korean version of Composite International Diagnostic Interview (K-CIDI), and to compare those with previous studies. Methods The Korean Epidemiologic Catchment Area study Replication (KECA-R) was Conducted between August 2006 and April 2007. The sampling of the subjects was carried out across 12 catchment areas. A multistage, cluster sampling design was adopted. The target Population included all eligible residents aged 181o 64 years. Face-to-face interviews were conducted with the Korean version of Composite International Diagnostic Interview (K-CIDI) based on the DSM-IV (N=6,510, response rate=81.7%). Results A total of 6,510 participants completed the interview. The lifetime and 12-month prevalence rates for all types of DSM-IV disorders were 30.0% and 17.3%, respectively. Those of Specific disorders were as follows : 1) alcohol use disorder, 16.2% and 5.6% ; 2) nicotine use disorder, 9.0% and 6.0% ; 3) specific phobia, 3.8% and 3.4% ; 4) major depressive disorder, 5.6% and 2.5% ; and 5) generalized anxiety disorder, 1.6% and 0.8%. Data relating to nicotine and alcohol use disorder revealed a very high male/female ratio. Mood disorder and anxiety disorder were more prevalent among females than males. Conclusion The prevalence of psychiatric disorders was high. In comparison with other studies, remarkable differences in the distribution of psychiatric disorders across the country and times were observed.
Sol-gel 공정에 의한 Silica sol의 합성 및 특성
이봉우,최용욱,우기석,박문수,김선일 조선대학교 생산기술연구소 1998 生産技術硏究 Vol.20 No.1
Reaction completion time was investigated to measure OH/CH ratio as reaction time at 25℃. In 50 and 60 minute reaction was completed in 1.0 ratio that was reached equilibrium state. In another method, equilibrium, state was investigated by measuring volume% of C₂H_(5)OH. From 40 to 50 minute. that was reached at 61.6 of volume% After reaction. monomer and tetrasilicate(92%) as main product was discovered and so oligomer(6%). Mean molecular weight (Mw) of sol solution was about 7.000. The beginning point and ending point of hardening was measured through the TGA investigation of reaction material. The hardening of sol solution was complected in 7 minute and viscosity was maximum from 4 to 5 minute and was set at 9 minute.
Al-Ce-Ni계 합금의 비정질 형성거동 및 기계적 특성에 관한 연구
이용호,구연수,이용호 弘益大學校 科學技術硏究所 1994 科學技術硏究論文集 Vol.4 No.-
Since amorphous alloys have been known to have better mechanical and chemical properties than crystalline alloys of the same composition, a great number of studies on the formation of Al-based amorphous alloys has been carried out actively. However, little has been obtained about the effect of Rare-Earth metal and Transion Metal addition on amorphous phase formed by melt spinning method. The aim of this study is to determine the compositional range of amorphous phase formation, micro structure of melt-spun Al-based amorphous alloys when Ce and Ni alloying elements were added. Al-Ce-Ni ternary alloys with 5.10 at%Ni were chosen in this study. As Ce of Ni contents increased, the width of the X-ray peak of the rapid solidified ribbons increased indicating the formation of amorphous phases. A similar tendency of the compositional dependence were observed in TEM halo pattern analysis.
이제헌,오문헌,이희봉 한국식품영양학회 2000 韓國食品營養學會誌 Vol.13 No.4
한국산 자초 적색소의 추출조건과 적색소를 확인한 결과 자초에서 색소성분의 추출은 지용성 용제가 물에 비해서 추출력이 좋으며 특히 95% 에탄올이 적색소 추출에 효과적이었다. 적색소 성분의 추출은 침출 시간에 관계없이 비교적 고른 추출력을 보였으며 40℃이하에서 20분 정도 추출하면 적색소가 충분히 추출되었다. 한국산 자초뿌리의 적색소 성분을 분리하여, IR, NMR. GC/MS로 확인한 결과 대부분이 acetylshikonin으로 동정되었다. Conditions of isolation for the red color pigments from the Korean Lithospermum erythrorhizon were investigated and identification of the red pigment was analysed. Non-polar solvents were more effective than water. Especially, 95% ethanol was observed as optimum solvent for the pigments extraction. About 20 minutes at 40℃ with 95% ethanol was enough for the extraction of the red pigments. The major pigment was analysed as acetylshikonin by TLC, IR, NMR and GC/MS.