여러가지 벽체조건을 가진 밀폐공간에서 열적쾌적에 대한 수치해석 연구

권용일,권순석 東亞大學校 大學院 1995 大學院論文集 Vol.20 No.-

This study is investigated for predicting a comfort region in the rectangular enclosure assumed Ondol cavity. Thermal environment is actually a combination of air temperature, mean radiant temperature, air velocity, humidity and two personal factors(clothing insulation and activity level) that will influence a person's perception of warmth or coolness. A comfort region is predicted by obtaining operative temperature(OT). The operative temperature is related with radiant and convective heat flux. The operative temperature of comfort region(thermal neutrality) is 20-24℃ at clo=0.1, met=1.2, RH=0%, -0.5<PMV<0.5 and PPD<10%. Radiant and convective heat flux is obtained for various adiabatic walls. This study is carried out a two dimensional numerical analysis by SIMPLER method. Radiant heat flux is obtained by a simplified zone analysis method. And shape factor is obtained by direct integral method.

여재 특성에 따른 생물막여과 공법의 처리특성에 관한 연구

강용태,양희천,송근관,권혁원 동아대학교 건설기술연구소 1999 硏究報告 Vol.23 No.2

In the biofilteration process, the removal of turbidity, color, KMnO₄consumpion, NH₄^(+)-N and UV254 reached 98%, 95%, 70%, 85%, 79% respectively. The stable removal efficiency was obtained by the direct filteration after coagulant dosage, though the influent was muddy and highly polluted. The exhausted GAC was used as the media of biofilter, which obtained stable removal efficiency compared with the other medias such as GAC, ZEOCARBON. Effluent of sorptived THMs was not found after 45 days during filter run time. And the case of dual media filteration was prior to single media filteration in the headloss development and quality of effluent. In the case of the ozone dosage rate was determined the color of biofilteration in the AAWTS system. 1㎎/L ozone dosage was proper when the color was below 8 unit.

평행봉 Upward kip동작의 역학적 분석

李勇仁,權光善,權五奭 忠南大學校體育科學硏究所 1986 體育科學硏究誌 Vol.4 No.1

As upward kip motion is the basic motion on parallel bars, it is easily trained in the classes of physical education. The purpose of this study is to offer some useful data for teaching and improve the skill of upward kip motion . For this study, two members of the national team and a high-class male player in University were sampled at random. their motion was photographed with 16mm movie camera(48frames/sec) and the gravitational censer of the body was searched for through the drawing figure method. Upward kip motion was divided into 3 phases. And then the movement of the center gravity and the angle change of joint were analyzed and compared with mechanical method. The conclusions are as follows : 1. In phase 1, when kipping legs form an angle of 90 degrees with the parallel bars, the moving speed of center gravity on Subject A was 2.4 m/sec. that of Subject B 2.1 m/sec. that of Subject C 2.4m/sec. As we have seen, Subject A and C were of the same speed. and Subjects B was 0.3m/sec later than Subject A and B, so that I think that the moving speed of the conter gravity must be fast. 2. In phase 2. when the legs are in parallel with the parallel bars. hip joint angle of Subject A was Flex 151° degrees. Subject B Flex 136degrees, Subject C Flex 144 degrees. There fore I think that the legs must extend extend the most. 3. In phase 3, when the motion was perfected, elbow joint angle of Subject A in the last frame was Flex 178degrees, Subject B Flex 170 degrees, Subject C Flex 177degrees. Subject B was shown unstable motion because flexed more than Subject A and B . 4. The perfection of the upward kip motion in the parallel bars depend on the moving speed of body gravity when the kipping legs form an angle of W decrees with the parallel bars. the size of elbows angle. hip angle. and shoulder angle when the legs are in parallel . flexion and extention of elbow joint when the motion was finished, and the waste of the P. and F.

Loader/Unloader의 고속화에 관한 연구

허성관,권용규,최종탁 大邱大學校 科學技術硏究所 2000 科學技術硏究 Vol.7 No.2

In the recent loader & unloader, left controller has problems such as functional error caused by vibration when speed up and discordance of speed between another machine in line. On this study, a newly designed loader & unloader has been selected motor viewed in torque, revolutions per minute (RPM). rating and output of power, programmable logic controller(P. L. C) viewed in economy, convenience and manageme -nt. By using optimum inverter, it can be avoided from occurrence of high frequence and motor damage in these equipments. By establishing distributed control system(D. C. S), it can control input, output and production units, can contribute factory automation system in PCB manufacture.

정신분열병 환자의 가족부담 척도 개발에 대한 예비연구

김철권,조진석,서지민,김용관,김호찬,김현수,김상수,제영묘 大韓神經精神醫學會 1999 신경정신의학 Vol.38 No.3

연구목적 : 정신분열병 환자의 가족이 느끼는 부담을 측정하기 위한 가족부담 척도를 개발하기 위함이다. 방 법 : 200명의 정신분열병 환자 가족과의 비구조적 면담과 외국 부담척도 고찰을 통하여 94문항을 수집하였고 그 다음에 전문가들과 가족들이 문항 및 영역을 분류하고 통합하여 최종적으로 36문항을 선정하였다. 그리고 정신분열병 환자의 가족 135명, 불안장애 환자의 가족 22명, 기분부전장애 및 신체화 장애 환자의 가족 26명, 치매 환자의 가족 49명을 대상으로 신뢰도와 타당도를 검증하였다. 결 과 : 자료분석 결과 검사-재검사 신뢰도, 내적 일치도, 감별타당도 모두 높게 나타났으며, 요인분석을 통해 다섯 가지 구성요인이 추출되었다. 결 론 : 본 가족부담 척도는 정신분열병을 포함한 만성 정신질환을 앓고 있는 환자의 호전과 가족의 부담을 덜어주기 위한 다양한 프로그램의 효과를 검증하는데 유용하게 사용되어질 수 있을 것이다. Objectives : This preliminary study was carried out to develop the Family Burden Scale(FBS) of the schizophrenics. Methods : Ninety-four items were collected by interviewing in a free unstructured format with one relative of each 200 schizophrenic patients and reviewing foreign FBS's. Several professionals and relatives were asked to group and integrate them into several categories. Finally 36 burden items were chosen to constitute a FBS. The FBS was administered to the relatives of 135 schizophrenic, 22 anxiety disorder, 26 dysthymic disorder and somatization disorder, and 49 dementia patients for examining the reliability and validity. Results : The FBS showed high test-retest reliability, internal consistency, and discriminant validity. The results of the factor analysis revealed five-factor solution. Conclusion : The FBS can be used to evaluate the effectiveness of various programs intended not only to reduce decompensation among schizophrenics, but also to alleviate family burden.

아크릴아마이드에 의한 신경병증 조기발견을 위한 선별검사의 평가

김성순,정해관,권용욱 大韓産業醫學會 2000 대한직업환경의학회지 Vol.12 No.3

목 적 : 아크릴아마이드에 직업적으로 노출되는 근로자들의 신경병증을 조기에 발견하기 위하여 사용될 수 있는 선별검사를 평가하기 위하여 본 연구를 진행하였다. 방 법 : 울산지역에서 아크릴아마이드 단량체를 제조하거나 취급하는 전체 근로자 52 명 중 아크릴 아마이드에 의한 신경병증 사례가 발생하고 작업환경노출이 많은 것으로 평가된 근로자 10명(평균연령 30.4세)을 고노출군으로, 나머지 근로자 42명(평균 연령 28.9세)을 저노출군으로 하였고, 의사 및 의대생 23명(평균 29.4세)을 대조군으로 선정하였다. 이들에 대하여 말초신경 증상설문지와 신경학적 진찰, 전기진단학적 검사, 진동감각역치검사 및 색도분별 검사를 시행하였다. 결 과 : 증상 설문지에서 고노출군은 말초신경에 특이한 증상을 저노출군 및 대조군에 비하여 더 많이 호소하였으며 신경학적 진찰소견상 이점분별력이 다른 집단에 비하여 유의하게 떨어져 있었다. 전기 진단학적 검사에서는 운동신경의 경우 정중신경 전도속도와 비골신경 잠시가, 감각신경의 경우 정중신경 진폭과 비복신경 잠시가 유의한 차이를 보였다.고노출군은 상지 및 하지의 진동감각역치가 저노출군 및 대조군에 비하여 유의하게 증가하였다. 색혼동지수로 측정한 색도분별력은 고노출군에서 대조군에 비하여 유의하게 떨어져 있었다. 이들 검사의 양성소견은 다른 변수를 제어하였을 때 아크릴아마이드 노출과 유의한 연관관계를 보였으며 각 검사의 양성 소견은 상호 중복이 많지 않고 이들 검사를 동시에 적용하였을 때 가장 많은 양성 소견을 보였다. 결 론 : 말초신경증상설문지, 진동감각역치검사 및 색도분별검사는 말초신경장해를 조기에 발견하는데 민감하였으며 이들 검사를 동시에 사용할 경우 말초신경장해의 조기 발견을 가장 효과적으로 수행할 수 있었다. Objectives : Acrylamide is a neurotoxin inducing central-peripheral distal axonopathy. The authors evaluated several neurologic tests to screen the early effect of occupational acrylamide exposure. Methods : Fifty-two males working either in the production of acrylamide monomer or in the handling of acrylamide in Ulsan, Korea, were selected and subcategorized into the hlgh-exposure group (n=10, mean age of 30.4 years) and the low-exposure group (n=42, mean age of 28.9 years). Twenty-three males (mean age 29.4 years) from medical professionals and students were chosen as a non-exposed reference group. Symptom questionnaire, neurologic examination, electrodiagnostic test, vibrotactile threshold test, and Lanthony desaturated 15 panel test (LD-l5D) were done. Results : The high-exposure group shewed more number of specific symptoms on questionnaire and more abnormal two point discrimination test. High-exposure group showed a significant difference in the median motor conduction velocity, peroneal nerve motor laten cy, sensory amplitude of median nerve action potential, and sensory latency of aural nerve. The vibrotactile threshold of the high-exposure group was significantly higher in both hands and feet than that of the low-exposure group and the reference group. Average color confusion index on the LD-l5D was significantly higher In the high-exposure group (median 22.7, range 0-135.7) than in the reference group (median 2.4, range 0-33.2) . Conclusions : The symptom questionnaire, vibrotactile threshold test, and color dis crimination test are sensitive in detection of the early acrylamide-induced neuropathy, and the combination of these tests would further facilitate the effectiveness of the screening.

항공기 소음 피해에 관한 연구 -대구공항을 중심으로-

민경선,허성관,최종탁,권용규 대구대학교 과학기술연구소 2000 科學技術硏究 Vol.7 No.2

The noise in factory or constructing field is controled by the Ministry of Environment, But there in no regulation of administrative plan on combat plane's noise. For this reason, the citizens lived around airfield are suffered from noise harm. On the purpose of this study, we investigate actual conditions in airfield and draw up lay-out a scheme for preventing noise harm from airplane, which can conduce pleasant life that is assured by the constitutional law.

흰쥐 경동맥 풍선손상 모델에서 리포좀 전달체를 이용한 에스트로겐의 국소전달 효과

윤영섭,장양수,정광회,박요석,김형관,강웅철,권진욱,정보영,조상호,김성순 대한순환기학회 1998 Korean Circulation Journal Vol.28 No.8

[P11-29] Study on the management of food additives sanitizers and disinfectants

Yong Kwan Kwon,Ki Hyung Hong,Gui Im Moon,Chang Duk Choi,Min Sik Kim,Ho Soo Im,Sun Young Chang,Jin Hwan Hong,Myung Chul Kim 한국식품영양과학회 2006 한국식품영양과학회 학술대회발표집 Vol.2006 No.10

Natural Products , Organic Chemistry : Phytochemical Studies on Seeds of Styrax japonica Sieb et Zucc

(Yong Kwan Kwon),(Soo Un Kim) 한국응용생명화학회(구 한국농화학회) 2002 Applied Biological Chemistry (Appl Biol Chem) Vol.45 No.1