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.

胎盤組織 Cytidine Deaminase에 關한 硏究 (Ⅰ) : Purification & Characterization

황병두,곽상태,임규,이재흔,백문기 충남대학교 의과대학 지역사회의학연구소 1984 충남의대잡지 Vol.11 No.2

Cytidine deaminase has been partially purified from human term placenta approximately 26-fold by combination of ammoninm sulfate saturation, sephacryl S-300, DEAE-cellulose and hydroxyapatite chromatography, and then its properties have been investigated. The enzyme shows a broad optimum pH from 5 to 9 and is heat-stable being, almost remained its activity by heat treatment at 70℃ for 8 minutes. The enzyme activity is inhibited to 23% and 77% by 2 mM of Cu^2+ and Co^2+, respectively, but, other cations do not affect the enzyme activity. The apparant Michaelis constant for cytidine and deoxycytidine are 74 uM and 69 uM, respectively. Kinetic analysis of cytidine deminase in presence of 0.25 mM Cu^2+ shows that the nature of the inhibition to cytidine deaminase is competitive, considering that Vmax is independent while km value is increased. The enzyme activity is completely inhibited by 0. 5 mM of p-hydroxymecuribenzoicacid(PHMB)but all of the activity is recovered in adding mercaptoethanol. The enzyme activity is decreased about 50% in prescence of 5 mM of polyamines. The enzyme activity is mainly located in the nuclei (80%) and cytosol(16%) fractions. he molecular weight of the enzyme is about 770, 000.

A Biomechanical Model of Lower Extremity Movement in Seated Foot Operation

Hwang,Kyu-Sung 한국산업경영시스템학회 2000 한국산업경영시스템학회지 Vol.23 No.60

신호등 없는 학교 앞 사거리 교통문제 분석

황규성 동의공업대학 1999 論文集 Vol.25 No.1

The objective of this study is the traffic system analysis of crossroads without a traffic signal lamp at the front school by the computer program which enables us to determine the optimal total cycle, signal phase and optimal method of industrial engineering. The developed program take advantages of TRANSYT-7F, GPSS, LINEAR PROGRAM. The one enables us to analyze the current crossroads system, the total cycle length and optimal Traffic signal system. The result of this study are as follows : First, the establish of traffic signal lamp are appropriated according to the analysis of TRANSYT-7F and the law of traffic. Second, the GPSS and LINEAR PROGRAM enables us to the optimal total cycle time is 119.9 seconds. Third, the optimal signal cycle of this study increased traffic volume from 1936.9 vehicles to 3197.2 vehicles per one hour. The V/C(volume/capacity) be improved from F grade to C grade.

GIS를 기반으로 한 시간제약을 가진 주문배달 및 수거운송계획모델

황흥석,조규성 한국경영과학회 2002 한국경영과학회 학술대회논문집 Vol.- No.1(1)

최근의 새로운 정보기술이 발전됨에 따라 대다수 수거 및 배송관련업체들은 효과적인 차량운송계획에 대한 새로운 방법을 모색하고 있다. 본 연구는 주문배달 및 수거를 수행하는 택배시스템 내에서 효과적인 차량운송계획을 수행하기 위한 GIS시스템을 응용한 연구로서, 고객의 요구시간제약과 화물의 수거 및 배달을 동시에 고려한 최적운송경로시스템을 개발하였다. 이를 위해 GeoDatabase를 기반으로 한 차량운송계획 프로그램을 개발하고, 이를 GIS시스템(Arc Logistics Route)에 적용하여 물류센터와 고객간의 차량운송 계획 및 운송정보시스템을 구현하였으며, 부산지역의 수산물류운송계획에 적용하였다.

사춘기전 Ⅰ,Ⅱ급 부정교합 아동의 기도 면적, 혀의 위치와 안면 형태에 관한 연구

황용인,이규홍,이기준,김상철,조형준,천세환,박양호 대한치과교정학회 2008 대한치과교정학회지 Vol.38 No.2

본 연구는 사춘기 성장 이전의 I, II급 부정교합을 갖는 아동 환자들의 측모 두부 규격 방사선사진을 이용하여 두개 안면 형태를 조사하고 이들과 혀의 위치 및 면적, 기도의 면적과의 관계를 조사하여 비인두 기도 및 혀의 형태가 악골 및 부정 교합의 형태에 미치는 영향을 알아보았다. 9 - 11세의 교정환자 76명을 대상으로 측모 두부 규격 방사선사진상 ANB difference를 기준으로 대조군(I급 부정교합군: 0 ≤ ANB difference < 4.0)과 실험군(II급 부정교합군: ANB difference ≥ 4.0)으로 분류하였다. 혀 면적, 혀와 구개 사이의 면적, 비인두 기도 면적과 두개안면형태 항목을 측정하고 비교하여 다음과 같은 결과를 얻었다. 혀 면적, 혀와 구개 사이의 면적, 비인두 기도 면적은 II급 부정교합군과 I급 부정교합군 간에 유의한 차이를 보이지 않았다. Hyperdivergent안면 형태일수록 비인두 기도 면적이 좁았다. 안모의 전후방 수직 길이가 길수록 혀의 면적이 넓었고, 전안면 고경이 길수록 혀는 하방위치 하였다. 비인두기도 면적이 좁을수록 혀의 면적도 좁아졌다. 이상의 연구 결과 혀의 면적과 위치, 비인두 기도의 면적은 I급, II급 부정교합 간에 차이를 보이지 않으며 hyperdivergent 안면 형태 및 안모의 전후방 수직 길이와 관련이 있는 것으로 사료된다. Objective: This study examined the craniofacial morphology of young patients in their prepubertal stage showing class I, II malocclusion, by analyzing lateral cephalograms, and analyzed its relationship with tongue position, tongue space, and airway space in order to ascertain the effects of nasopharyngeal airway and tongue morphology on the form of the malocclusion. Methods: Seventy-six patients aging from 9 to 11 were divided into two groups depending on the ANB difference on the lateral cephalogram: Experimental grouP (CI II malocclusion group) showing 0 ≤ ANB difference < 4.0; Control group (CI I malocclusion group) showing 0 ≤ ANB difference < 4.0. The tongue space, space between palate and tongue, nasopharyngeal airway space and craniofacial morphology were compared between the two groups. Results: Tongue space, Palate-tongue space, nasopharyngeal airway space showed no significant differences between class I and class II malocclusion groups. Hyperdivergent faces were associated with smaller nasopharyngeal airway space. Longer anterior facial height and posterior facial height were associated with larger tongue space, and greater anterior facial height were associated with lower tongue position, Smaller nasopharyngeal airway space showed smaller tongue space. Conclusions: Tongue space and nasopharyngeal airway space showed no significant differences between class I malocclusion group and class II malocclusion group. Only anterior facial height and posterior facial height had an influence on tongue space and nasopharyngeal airway space.

순환유동식 건식세정기에서의 HCl제거에 관한 실험적 고찰

황상규,정장표,이상권 慶星大學校 環境問題硏究所 1999 環境硏報 Vol.9 No.1

Dry scrubbing has drawbacks of low removal efficiency and generation of much exhausted sorbents, but one the other hand dry scrubbing has merits of simple equipment, composition and cost-effectiveness. Also Dry scrubbing has received considerable attention since exhausted sorbents can be stably disposed and reused. This presentation addresses experimental results from a established circulating fluidized bed scrubber for HCl removal with using lime(Ca(OH)₂) prior to developing a circulating fludized bed scrubber for simultaneous removal of SOx/NOx/HCl. Injected lime through screw feeder was fluidized in the reactor and intensely reacted with HCl at 2.5 m/s velocity. Experimental results show HCl removal efficiency greater than 90% at 0.7 of Ca/Cl removal efficiency.

수요변동시 공동영역을 도입한 자동창고의 운영방안

황규성,김광필 동의공업대학 2001 論文集 Vol.27 No.1

Performances of common zone with various sizes are examined for possible demand rate variations for an AS/RS. Common zone is a middle area located between the 1st class and the 2nd class to be used by the 1st class items if the assigned racks are not enough. This area is designed to resolve the rack shortage problem associated with a particular class. In the previous researches, effect of demand rate variation is ignored since fixed demand rate is assumed. It is found that rack shortage rate is decreased up to 60% of decreased demands. However, no difference is found at above 70%. Waiting time tends to be longer with increased common zone while travel time and throughput are not affected at all with the common zone size.

물라이트 결합 캐스터블 내화물의 유동성 향상

황규홍,김상모 慶尙大學校生産技術硏究所 1999 生産技術硏究所論文集 Vol.15 No.-

Castable refractories are widely used due to their easy application to most of high temperature works. Among these low cement mullite-bonded castables with high forming density becomes the focus of attention due to high hot strength and excellent wear resistance against molten metals and slags. In this study, the flowability and workability of mullite-bonded castables were estimated as a function of the size of fine matrix phases and their compositions. It was found that the use of medium size alumina as the matrix phase, was an effective means for substantial increase of flowability and workability of castables. And by decreasing the q-value of Anderssen, nonvibrating flowability could be increased to the level for self-flow castables.

중국의 사범교육제도 변천에 관한 연구

황규상 공주교육대학교 초등연구원 1979 公州敎大論叢 Vol.15 No.-

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