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안대명,이창한,최윤찬,조석호,안갑환,김성수 대한상하수도학회 2002 상하수도학회지 Vol.16 No.4
The paper introduces a domestic pump designed for dissolved air flotation (DAF). In the paper, the difference in performance between the domestic DAF pump and conventional pressure saturator is explained using the characteristics of air bubble released. The size distribution of air bubbles released from DAF pump is measured by image analyzer and particle size analyzer. And the mean diameter of bubbles is 43μm. The results are similar to that of pressure saturator. The air volume concentration in the water of domestic DAF pump and pressure saturator are 40 and 70% of theoretical amounts. In DAF system used domestic DAF pump, the removal efficiency of turbidity is 70%.
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.
이중여자 권선형 유도 발전기에 의한 푸역발전시스템의 동특성 해석
장석명(Seok-Myeong Jang),최장영(Jang-Young Choi),조한욱(Han-Wook Cho),박지훈(Ji-Hoon Park),윤기갑(Ki-Kab Yoon) 대한전기학회 2006 대한전기학회 학술대회 논문집 Vol.2006 No.7
Using the MATLAB/SIMULINK, this paper presents dynamic simulation model for 6㎿ wind power generation systems with the DFIG considering distribution systems and performs the dynamic analysis of wind power systems
공간고조파법을 이용한 풍력용 영구자석형 발전기의 전자기적 특성해석 및 제어정수 도출
장석명(Seok-Myeong Jang),최장영(Jang-Young Choi),조한욱(Han-Wook Cho),유대준(Dae-Joon You),경남호(Nam-Ho Kyung),윤기갑(Ki-Kab Yoon) 대한전기학회 2006 대한전기학회 학술대회 논문집 Vol.2006 No.7
Using the MATLAB/SIMULINK, this paper presents dynamic simulation model for 6㎿ wind power generation systems with the DFIG considering distribution systems and performs the dynamic analysis of wind power systems.
경갑수(Kyung Kab-Soo),최일윤(Choi Il-Yoon),이준석(Lee Jun-Seok),이준호(Lee Jun-Ho) 한국철도학회 2004 한국철도학회 학술발표대회논문집 Vol.- No.-
As a method to execute efficient maintenance of steel railway bridge, in this paper, program for fatigue assessments of structural member of steel railway bridge were developed. This program is composed with 3 unit module program which variable stress analysis, fatigue assessment and fatigue crack propagation. The validity of developed program was verified from evaluating the result of filed measurement and program output.