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.

공원묘지 유실에 의한 대량재해의 개인식별

강신몽,이한영,윤중진,이원태,김종열,이영석,서재관,최득린,서지석,이혜경 大韓法醫學會 1992 대한법의학회지 Vol.16 No.1

Individual identification of severely decomposed or skeletonized bodies is an important part in medicolegal field. 142 bodies were torn up and carried away by flood in a park cemetry, Kwang-Ju, Kyunggi province, Korea at Sept., 10, 1990. The authors examed the 56 bodies, which were gained, through medical, anthropological, odontological, radiological methods, and superimposition for individual identification. Among them, 41 cases were successfully identified, and remaining 15 cases were not identified because of sever destruction and no adequate information.

KAL기 추락에 의한 대량재해의 개인식별

강신몽,이원태,고영창,최상규,김윤희,이홍석,서재관,윤중진,이혜경,최득린,김종열,윤창육,변명식,이장홍 大韓法醫學會 1991 대한법의학회지 Vol.15 No.2

Individual identification is an important part in medicolegal field especially in mass disaster. At July, 27, 1989, KAL KE-803 was crashed on landing at Tripoli International Airport, Liba. The plane was caught in fire and sixty eight Koreans were sacrified. The majority of victims were severely charred and injured. The authors examed all dead bodies and successfully identified all the cases through visual, anthropological, odontological, radiological and pathological methods including fingerprint and blood typing.

규산질 비료의 참외 흰가루병 발생 억제 효과

류나현,최미영,류연주,조현종,이용세,이영득,정종배 한국환경농학회 2003 한국환경농학회지 Vol.22 No.4

토양에 시용한 규산의 참외 흰가루병에 대한 직접적인 억제 효과와 살균제의 방제 효과를 증진시킬 수 있는 보조효과를 조사하였다. 규산질 비료의 처리는 철가루병 균에 의해 감염된 참외 잎에서 균사의 생장과 분생포자의 형성을 억제함으로써 흰가루병 발생을 일부 억제할 수 있는 것으로 조사되었다. 물론 규산질 비료 자체만의 흰가루병 발생 억제 효과는 매우 미약한 수준이었으나 살균제의 흰가루병 방제 효과를 크게 증진시켜줄 수 있는 것으로 나타났다. 따라서 현재 농가 현장에서 밝혀지고 있는 규산질 비료의 참외 병해 발생 억제 효과는 주로 이러한 살균제의 효과를 증진시킬 수 있는 규산의 보조적인 작용에 기인하는 것으로 판단된다. 따라서 토양에 대한 적절한 수준의 규산질 비료의 시용은 살균제의 방제 효과 증진을 통하여 과다한 약제의 사용과 그에 따른 부작용을 경감시킬 수 있을 것으로 보인다. 규산질 비료의 흰가루병 발생 억제 효과를 증진시키기 위해서는 앞으로 병의 발생을 최대로 억제할 수 있는 참외 잎 중의 적정 규소 함량에 대한 검토 등의 추가적인 연구가 필요할 것이다. Silicon is known to accumulate in plants and results in greater resistance to diseases and insect pests. In this study, we investigated the effect of silicate fertUizer applied in soil on the development of powdery mildew of oriental melon Oriental melon seedlings of four-leaf stage were transplanted and grown in a plastic film house. silicate fertilizer was applied to maintain soil available SiO₂ level of 200 ㎎/㎏ one week before transplanting. Fungicide trinumizol was sprayed three times; one, two, and three weeks after transplanting. Sphaerotheca fuliginea was inoculated 2 weeks after transplanting. The number of infected leaf and the number of fungal colony in leaves were measured one, two, and three weeks after the inoculation. Three weeks after the fungal inoculation, in the treatment of fungicide triflwnhl, infected leaf numbem and number of colony per leaf were reduced by 10 and 58% respectively. In the silicate fertilizer treatment, infected leaf numbers and numbers of colony per infected leaf were suppressed only by 6 and 16%, respectively, and the efficacy was lower than that of the fungicide triflumizol. The combined treatment of silicate fertilizer and the fungicide suppressed powdery mildew more effectively, and infected leaf numbem and numbem of colony per leaf were reduced by 31 and 80%, respectively. These results indicate that although silicate fertilizer itself is not much effective in the suppression of powdery mildew, it can significantly enhance the efficacy of the fungicide.

3중 적층형 압전 트랜스듀서의 주파수 특성

李鎔國,李海龍,韓得永 건국대학교 1995 學術誌 Vol.39 No.2

Frequency characteristics of a three-layered piezoelectric transducer are analyzed with three piezoelectric ceramic disk vibrators and two sheets of thin isolator. The electric input voltage near its fundamental resonant frequency is applied to the center vibrator and the output voltages across the left and the right vibrators are connected in parallel or in series to the resister load. Moreover, equivalent circuits are derived from the Mason's model for parallel connection and series connection. Also, equations of voltage ratio, resonant frequency, phase angle between the Input and output voltages, and bandwidth have been derived. Computed values from those equations are compared with measured values. Both are shown to agree well each other. Key words : Three-layered piezoelectric transducer(3중 적층형 압전 트랜스듀서), Equivalent circuit(등가회로), Parallel connection(병렬연결), Series connection(직렬연결), Resonant frequency(공진주파수), Bandwidth(대역폭)

항공레이저 측량 자료의 해상도에 따른 DEM 오차 비교평가 연구

이근상,고덕구,채효석,신영호 한국지리정보학회 2003 한국지리정보학회지 Vol.6 No.3

최근 높은 수직정확도를 갖는 항공레이저측량 기술이 개발됨에 따라 이를 이용한 DEM(digital elevation model) 생성, 건물추출, 홍수위험지도 제작, 3차원 도시모델 구축 등의 다양한 연구가 활발하게 수행되고 있다. 본 연구에서는 항공레이저측량으로부터 취득한 원시자료로부터 생성한 해상도별 DEM의 표준편차를 계산하기 위해 점비교법, 등고선비교법 그리고 1/5,000 수치지형도를 활용하였다. 비교결과 점비교법이 등고선비교법보다 낮은 DEM 표준오차를 나타냈으며, 이것은 등고선비교법이 점비교법에 비해 조밀한 격자 연산이 이루어지지 않은 것이 원인으로 파악되었다. 또한 1/5,000 수치지형도는 평균수평거리인 25.4m 이하에서는 점비교법과 등고선비교법에 비해 높은 오차를 보였으며, 25.4m 이상에서는 등고선비교법과 유사한 결과를 나타냄을 알 수 있었다. As airborne laser scanning technique is developed with high vertical accuracy recently, there come many studies on DEM(digital elevation model creation, building extraction, flood risk mapping and 3D virtual city modeling. This study applied point comparative method, contour comparative method and digital map with scale 1/5,000 to calculate RMSE of DEM in according to resolution that was constructed using rawdata being acquired by airborne laser scanning. As a result, point comparative method showed lower DEM standard error than contour comparative method, it is a reason that contour comparative method was not carried out detailed grid calculation for point comparative method. Also, digital map with scale 1/5,000 showed higher DEM standard error than point comparative method and contour method in below 25.4m that is average horizontal distance among contour line, and showed similar result with contour comparative method in over 25.4m.

비올레 르 �� 건축이론에 나타난 합리주의적 특성

李英美,李孝院,千得琰 대한건축학회 2003 대한건축학회논문집 Vol.19 No.3

The aim of this study lies on the deeper understanding of Viollet-le-Duc's architectural theory through his dialectic thoughts on history, through examining by what forms the rationalistic features of Viollet-le-Duc's theory was presented in his design methodology. Viollet-le-Duc, who maintained and based his own architectural theory on the rational thinking system, had already presented the theory of rational design long before modern architects such as Le Corbusier who sought to systematize the design methodology scientifically. Various works of his own designing and the buildings restored by him are undoubtedly based on this rational design methodology applying Cartesian' way of thinking. And also like the human history repeating evolution, they are the very outcomes of efforts trying to create his own logical expression considering things as the process of dialectical evolution. His rationalistic thinking developed into the ideology of freedom of 'While nature is only a matter with a good reserve waiting eternally for the transformation, history is the true image of eternity', and eventually formed the architectural theory full of enthusiasm towards the new architecture.

플라즈마 표지소자의 제작

이상윤,라병욱,박동수,황인헌,이덕동,신영남,박성배,이동욱,박용석,박형근,손상호,권태근,채경락,정경득 慶北大學校 自然科學大學 1986 自然科學論文集 Vol.4 No.-

An Ac-type Plasma Display Panel (PDP) operating with Ne-Ar(0.1%) Penning mixture gas is fabicated. The characterics of the panel with electrodes covered with thin and thick dielectric layers are studied. The brightness of the Neon-orange light emitted by the panel measured as function of applied voltage and frequency. As an application, a graphic display system equipped with PDP showing still and moving pictures is made.

잎 담배 根群發達과 養分移動 및 生育特性에 關한 硏究

李鎔得 건국대학교 1979 論文集 Vol.10 No.1

An investigation was carried out on the connection of conductive tissues between roots and leaves of tobacco. The results are summarized as follows; (1) Absorbed nutrients in tap roots was passed and accumulated from the lowest leaf to growing point in that order. But it is slow and unclear at near the growing point. In adventitious roots, absorbed nutrient is passed and accumulated from middle leaves to upper leaves, in relatively short time. (2) Passing of nurients which is absorbed simultaneously in tap roots and adventitious roots are signed first on the lowest leaf and the upper-most leaf, and by afterward falling and elevating, nutrients accumulation of middle leaves in last. But it is generally carried out in relatively short time. (3) The growth of tabacco mainly depends upon the absorbed nutrients from the tap roots, but the adventitious roots have little connection with the process. (4) The growth of tabacco mainly depends upon the soil volume occupied by the tap roots, but that of adventitious roots have little influence. From above results, it was recognized that tap roots and adventitious roots play a different role as supplies of nutrients, and the glowing process related largely with tap roots. Thus, it is extremely important problem to establish a cultivation technique based on the stimulation of tap roots development.

토양중 Carbofuran의 흡착 및 이동 특성

이영득 대구대학교 농업과학연구소 1993 農業科學硏究論文集 Vol.7 No.-

Adsorption and mobility characteristics were investigated to elucidate the behavior of carbofuran in the soil enviroment. Freundlich adsorption isotherm was employed to compare the adsorptive property of carbofuran between 5 soils of different origin. Soil thin layer chromatography(TLC) and column chromatography(CC) were also undertaken to serve direct patterns on the mobility. Freundlich adsorption constants of carbofuran, ranged from 0.34 to 2.10, were largely affected by organic matter and clay content of soilds. Mobility patterns from soil TLC and CC produced acceptable parameters predicted by the adsorption constants, however, some variations were observed in soils with high organic matter and clay content. Under normal Korean soil conditions, carbofuran was posed to be readily mobile and leached downward as confirmed by adsorption constants, soil TLC and CC. Release pattern of granular formulation and stability to hydrolysis in soil water were also presented to explain the short-term availability of carbofuran in soils after its granular application.