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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.
황경충,윤종호,최재하,김성청 한국공작기계학회 2002 한국생산제조학회지 Vol.11 No.4
Inconel 690 alloy has widely been used in power plant and high temperature facilities because it has high thermal resistance and toughness. But, we have little design data about the creep behaviors of the alloy. Therefore, in this study, an apparatus has been designed and built for conduction creep tests under constant load conditions. A series of creep tests on Inconel 690 alloy have been performed to get the basic design data and life prediction of inconel products and we have gotten the following results. First, the stress exponents decrease as the test temperatures increase. Secondly, the creep activation energy gradually decreases as the stresses becomes bigger. Thirdly, the constant of Larson-Moller parameters on this alloy is estimated about 10. And last, the fractographs at the creep rupture show both the ductile and the brittle fracture according to the creep conditions.
황경층,윤종호,최재하,김성청 충북대학교 산업과학기술연구소 2002 산업과학기술연구 논문집 Vol.16 No.2
As the machine tool industry progresses, the performance of cutting tools also needs to be of good quality and specialized. If the existing metal cutting tool tip is coated properly, its life would be longer and the machining of a difficult-to-cut material also could be possible. For the development of the high quality cutting tool, the applicabilities of TiCN coating deposited by PVD on the cutting insert were experimentally investigated. The various analyses such as SEM micrograph, XRD pattern, AFM surface morphology, and hardness were performed to cross-check the possibility and availability of TiCN coated tool in the field.
고립성 폐 결절로 나타난 경화성 혈관종의 폐엽 절제술에 의한 치험 1예 : A case report
황은구,이송암,황재준,김상윤,권혁중,김요한 건국대학교 의과학연구소 2004 건국의과학학술지 Vol.13 No.-
Patient was sixty-eight years old female. She was transferred to our department to resect the solitary pulmonary nodule on right lower lobe. Intraoperative frozen-section revealed bronchioloalveolar carcinoma. So, we performed right lower lobectomy and mediastinal lymph node dissection. Permanent pathologic diagnosis of this patient was sclerosing hemangioma. We report experience of treatment of sclerosing hemagioma presenting solitary pulmonary nodule by lobectomy with the review of literatures.
황경충,윤종호,최재하,김성청 한국공작기계학회 2002 한국생산제조학회지 Vol.11 No.2
In domestic industry, there is no manufacturers specialized in the production of cutting tools for the difficult cutting materials. Then, we have few data about them. In this study, the gear driving high speed lathe on which is mounted by a tool dynamometer and high speed CCTV were used to measure the various machining characteristics. Relations among the cutting speed, feed rate per revolution, cutting depth, cutting forces and surface roughness were graphically analyzed under 64 cutting conditions. The process of chip, i.e., generation, development and falling-off also were visualized for the characterization of chip shapes of the difficult-to-cut materials using the CCTV.
체계적인 보안 정책 관리를 위한 계층적 보안 모델 설계
황윤철,엄남경,장재웅,이상호 충북대학교 컴퓨터정보통신 연구소 2001 컴퓨터정보통신연구 Vol.9 No.1
인터넷 서비스의 다양화와 인터넷을 구성하는 네트워크의 대형화로 인해 다양한 특성을 갖는 구성요소와 환경 등의 요인으로 시스템간의 거래에 대한 보안정책 설정 및 제어가 어려운 문제로 등장하고 있다. 보안 정책 기술이란 인터넷상에서 정보보호 기능을 구현할 때 적용하는 정책들에 대한 검색, 접근제어, 분배 및 처리하는 기술을 의미한다. 이 논문에서는 이러한 현실적인 문제를 해결하기 위해 대형화되어 가는 인터넷 전체에 걸쳐 효율적으로 적용할 수 있는 계층적 구조의 보안 정책 모델을 설계한다. Security policy association and control about transaction between systems must be hard problem to solve because of the environment and composite factors with variable properties by diversity of internet service and enlarging a scale of organizing internet. Security policy technique means retrieval, access, control, distribute and process technique about adoptable policies when implementation is information security function on internet. In this paper, to solve this actual problems, Design of a hierarchical structure security policy model applicable to internet.
김재홍,윤기범,박평원,김영진,전경민,김영태,김중환,곽호,구상완,송민석,유옥,지혜구,김동원,문상은,박영립,정승호,성범진,성순제,엄주용,황정열,이기홍,이주협,전태진 대한화학요법학회 1994 대한화학요법학회지 Vol.12 No.1
The prevalence of PPNG among pretreated gonorrhea cases isolated at the STD clinic of Choong-Ku Public Health Center in Seoul has been studied and reported annually since 1981. In 1991, 123 strains of N.gonorrhoeae were isolated, among which 58(47.1%) were PPNG. In 1992, 98 starains of N.gonorrhoeae were isolated, among which 51(52.0%) were PPNG. In all, 109(49.3%) strains were found to be PPNG among 221 strains isolated between 1991-1992. The prevalence of PPNG in Seoul showed increased tendency till 1989, thereafter, it has been stationary or slightly decreasing.
서울의 Penicillinase Producing Neisseria Gonorrhoeae 발생빈도(1996)
김재홍,황동규,전재홍,김윤석,김중환,김용준,이창균,임동진,김현수,조창근,김경문,박상훈,전우형,김희성,이호정,차명수,김갑형,김형석,김석우,황지환,박병순,권오상,이민수,송기훈,성소영,이인섭,부태성 대한화학요법학회 1999 대한화학요법학회지 Vol.17 No.2
Background : In recent years, gonorrhea has been panedemic and remains one of the most commom STDs in the world, especially in developing countries. Objective & Methods: For the detection of a more effective therapeutic regimen and assessing the prevalence of PPNG, we have been trying to study the patients who have visited the VD Clinic of Choong-Ku Public Health Center in Seoul since 1980 by means of the chromogenic cephalosporin method. Results: In 1996, 139 strains of N. gonorrhoeae were isolated, among which 53(39.0%) were PPNG. Conclusion: Our results suggests that after a peak of 74.3% in 1993, the prevalence of PPNG in Seoul is gradually declining.
이재준,황정윤 금오공과대학교 2008 論文集 Vol.29 No.-
This study is to analyze the statistical characteristics of the maximum annual rainfall for selected durations in Korea. In this study, used basic data are annual maximum rainfall at 54 stations that has the rainfall records more than 20 years. So far, very little has been done analysis of statistical characteristic about annual maximum rainfall. The purpose of this study is to analyze the basic statistics(mean, variation, standard deviation, skewness, coefficient of variation), randomness and persistence. The conclusion which can be drawn from this study are as follows : 1) In the short duration, the mean value has increased as the observed period increases, but the mean value has decreased as the observed period increases in the long duration. 2) Variation, standard deviation and coefficient of variation have decreased as the observed period increases at the most of stations. 3) The skewness has not any pattern and is shown random value without affection due to observed period. 4) Most of rainfall data shows the randomness, but several stations have the persistence in the correlogram.