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권순철,이영우,윤성민,김주연,최재호,길인섭,한문희 한국냄새환경학회 2011 실내환경 및 냄새 학회지 Vol.10 No.4
In Shiwha/Banwal industrial complex, activated carbons are widely used to remove VOCs. General method of regenerating activated carbons is proceeded at high temperature (800℃). But it causes loss of activated carbons and high cost. In this study, activated carbons were treated at a low temperature of 170℃ to avoid these. Desorption reactions were analyzed based on the data obtained from a thermogravimetric analyzer. THC(Total Hydro Carbon) analyzer was used to analyze desorption reaction of activated carbons. 시화/반월 산단 내에서는 발생되는 휘발성유기화합물(Volatile Organic Compounds, VOCs)을 흡착시키기 위해서 활성탄을 사용하고 있다. 활성탄을 재생시키는 기존의 고온(800℃) 탈착법은 고온에서 탈착 시 활성탄이 변질되고 비용이 많이 드는 단점이 있다. 본 연구에서는 경제성을 제고시키기 위하여 저온(170℃)에서 활성탄의재생실험을 진행하였다. 열중량분석기(TGA : Thermo Gravimetric Analyzer)를 사용하여 탈착특성을 분석하였고 THC (Total Hydro Carbon) 측정 장치를 사용하여 VOCs의 탈착특성을 조사하였다.
중학생 혼성반 체육수업의 운동참여 회피요인 및 회피유형에 관한 분석
권순철 釜山外國語大學校 敎育大學院 2005 敎育論叢 Vol.6 No.-
The purpose of this study is to provide a method of exercise participation in co-ed class and basic data on improvement of effective physical education class by comparing and analysing students' avoidance factors and styles through gender, school year, achievement of P.E. The group of study was conducted to 900 students(male and female each 450 number) of 5 co-ed middle school in Pusan. The students were answered by degree of their interest in each avoidance factor and style using 5 step Likert scale. The factors were divided into five as student factor, class factors, institutionㆍimplements factor, teacher factors and wether factor. And the styles were divided into two as positive avoidance and negative avoidance. Data processing was taken in statistical program used SPSS v 11.0, and at the level of significance 95%. Exploratory Factor Analysis was used to prove construct validity and content validity of this questionnaire. Reliability Analysis was used to prove reliability. Adopted MANOVA for analysis of avoidance factor and avoidance style about basis statistical data, LSD for Post Hoc Test, and Multiple Regression Analysis to study how avoidance factor effects avoidance style, the result is as following. 1. Analysis of exercise participation avoidance factor of co-ed physical education class (1) Boy students had how inclination of avoidance factor than girl student. (2) Low school year students had high inclination of avoidance factor in teacher factor. (3) Students of low ranked record had higher inclination of avoidance factor than students of high ranked record. 2. Analysis of exercise participation avoidance style of co-ed physical education class. (1) Girl students had high inclination in both positive avoidance and negative avoidance than boy students. (2) Low school year students had lower inclination of both positive avoidance and negative avoidance. (3) Students of low ranked record had higher inclination of both positive avoidance and negative avoidance than students of high ranked record. 3. How avoidance factor effects avoidance style in exercise participation (1) Teacher factor was the biggest effect most on positive avoidance, and effect was big in weather factor was next, and school year factor, student factor order was followed. (2) Weather factor was the biggest effect most on negative avoidance, and effect was big in student factor was next, teacher factor, school year factor was followed.
허니콤 코어로 補强된 航空機用 샌드위치 構造物의 오토클레이브 成形시 발생되는 缺陷 원인 분석과 그 최소화 방안
권순철,김윤해 한국해양대학교 산업기술연구소 2001 연구논문집 Vol.18 No.-
The purpose of this paper is to determine the effect of the autoclave inner pressure rate, heat-up rate, tool round angle, thickness of core, height of joggle on defects, and to minimize the defects of aircraft sandwich structure reinforced with honeycomb core occurred in autoclave processing. The results showed that the geometry of aircraft sandwich structure and tool such as tool round angle, thickness of core, height of joggle, and the autoclave cure conditions such as inner pressure rate, heat up rate strongly affected the core movement, core wrinkle, bridge phenomenon of prepreg and depression of core that occurred in autoclave processing.
CFRP Sheet로 보강된 I형 PFRP 휨부재의 단면내 응력 분포와 휨성능 평가
권순철,이강연,최원창,김선희 한국복합신소재구조학회 2018 복합신소재구조학회 학술발표회 Vol.2018 No.04
In this paper, four point bending tests were carried out to analyse flexural strengthening effect by CFRP (Carbon Fiber Reinforced Polymer) layers for I shape PFRP (Pultruded Fiber Reinforced polymer) flexural member retrofitted with CFRP sheet. Comparing load-displacement relation and sectional stress distribution, the flexural strengthening effect by the number of CFRP layers was founded.