한랭노출과 고혈압의 연관성

장태원,김윤규,윤동영,이창희,홍영습,신해림,정갑열,김준연 大韓産業醫學會 2001 대한직업환경의학회지 Vol.13 No.4

Objectives : This study was carried out to suggest preventive methods for hypertension in cold-exposed workers. Methods : In 11 refs·iteration industries, 68 workers working in refrigerated areas more than one time per day were selected as the exposed group, and 68 workers not exposed to cold were selected as the control group. We interviewed the subjects with a questionnaire covering occupational history, and conducted clinical and laboratory tests including measurements of blood pressure and core temperature. Results : The systolic blood pressure in the exposed group(130.0±13.3 mmHg) was significantly higher than that recorded In the control group(118.3±12.1 mmHg), as was the diastolic blood pressure in the exposed group(82.7±8.5 mmHg) versus the control group(77.4±8.7 mmHg). The core temperature in the exposed group(36.1±0.7℃) was significantly lower than that experienced in the control group (36.4±0.5℃). In logistic regression analysis, age, cold exposure severity and milk intake were significant variables, with odds ratios of 5.204(95 % CI 1.440∼18.812), 2.674(95 % CI 1.080∼6.618), and 0.364(95 % Cl 0.141∼0.942) , respectively. Conclusions : Our study suggests that cold-exposed workers have higher a higher risk of hypertension, and that their core temperature is lower. Risk factors affecting hyper-tension of cold-exposed workers include age, cold exposure severity and milk intake. For the prevention of hypertension, cold-exposed workers should minimize cold-exposure time as much as possible.

겨울철 주택내 유기화합물 공기오염농도에 관한 측정연구 : 서울시내 96채의 주택을 대상으로 In case of 96 houses in Seoul

전정윤,박준석,손장열,池田耕一 대한건축학회 2004 대한건축학회논문집 Vol.20 No.5

Measurements on indoor organic compounds air pollution level in 96 houses were conducted. Houses which measurement carried out were collected based on the survey results about house type and constructed year in Seoul city. Indoor air organic compounds were monitored with two diffusive samplers. One was a cartridge treated with 2,4-initrophenylhydrazine for aldehydes sampling. The other was a passive charcoal tube for VOCs sampling. Two samplers were simultaneously exposed in living room during 24 hours. Aldehydes extracted with 2ml acetonitrile from the cartridge were analyzed by HPLC equipped with an UV diode array detector. VOCs were extracted with 2ml carbon disulfide from the charcoal tube by shaking and then analyzed by chromatograph and mass selective detector. The main Results were as follows; 1) Formaldehyde were detected in more than 90% of all homes, and average value of detected level was 54.92ppb. This alue is lower than ASHRAE guideline (100ppb) and WHO guideline (80ppb). 2) Toluene were detected in all homes, and EthylAcetate, 1-Butanol, ethylbenzene, p-Xylene, D-limonen were detected more than 50% of all homes. 24 hours averaged level of sum of VOCs was 179.96㎍/㎥, and this value is lower than WHO‘s TVOC(Total Volatile Organic Compounds) guideline (300㎍/㎥). 3) Mostly frequent detective level of formaldehyde was between 50-60㎍/㎥, and 84.09% of all homes showed lower level than WHO guideline. 4) Mostly frequent detective level of sum of VOCs was between 100-150㎍/㎥, and 86.46% of all homes showed lower level than WHO's TVOCs guideline.

事務所建物 空調設備의 豫防保全 最適點檢周期가 信賴性向上 및 期待利益에 미치는 영향

곽노열,박병윤,손장열 대한건축학회 2003 대한건축학회논문집 Vol.19 No.5

In this study, using Monte Carlo simulation about inspection model applied practically in air-conditioning facilities of office building, the optimal preventive maintenance inspection period is suggested to improve the reliability of the units, and effect on expected profit of optimal preventive maintenance inspection period is computed. The main results of this study are summarized as follows: 1) Simulation program for sensitivity analysis and optimal preventive maintenance inspection period is made, in order to execute precisely sensitivity analysis of maintenance factors, by using Monte Carlo simulation's flow chart and compute optimal preventive maintenance inspection period. 2) Using models for the relationship between reliability and inspection frequency per unit time and model between inspection and expected profit of preventive maintenance by CBM, the optimal preventive maintenance inspection period of air-conditioning facilities is computed, and it is revealed that the range of that is 90∼175 hr and, correlation curve of the original MTBF and optimal preventive maintenance inspection period by CBM is derived. 3) And effect on expected profit of preventive maintenance's activity by optimal preventive maintenance inspection period is computed. It is found that the larger the original MTBF, like MTBF of centrifugal compression chiller and AHU is, and the smaller the expected profit increased, and the smaller the original MTBF, like MTBF of boiler, absorption chiller and turbo case cooling tower is, and larger the expected profit increased.

서울시 주택내 휘발성 유기화합물 공기오염농도의 계절변화에 관한 연구

전정윤,박준석,손장열 대한건축학회 2005 대한건축학회논문집 Vol.21 No.3

For the purpose of examining about seasonal change in concentration of indoor organic compounds in Seoul, 96 houses in the winter and 49 houses in the summer were investigated. Indoor organic compounds concentration were measured and survey was performed by questionnaire. Indoor organic compounds were monitored with two diffusive samplers. One was a cartridge treated with 2,4-dinitrophenylhydrazine for aldehydes sampling. The other was a passive charcoal tube for VOCs sampling. Two samplers were simultaneously exposed in living room during 24 hours. Aldehydes extracted with 2㎖ acetonitrile from the cartridge were analyzed by HPLC equipped with an UV diode array detector. VOCs were extracted with 2㎖ carbon disulfide from the charcoal tube by shaking and then analyzed by chromatograph and mass selective detector. The main Results were as follows. (1) Both of Formaldehyde and VOCs concentration in the summer are lower than that in the winter. This is because of increasing ventilation rate according to the opening of windows in the summer. (2) Formaldehyde, toluene and ethylbenzene were indicated as the major indoor volatile organic compounds in Seoul Residence. (3) There were 10 times of deference in concentration between non-occupied new house and that of post-occupied. (4) There was no significant relation between house type and indoor concentration.

현장측정에 의한 공기조화기 에어필터의 성능 평가

정용호,박병윤,손장열 대한건축학회 2004 대한건축학회논문집 Vol.20 No.7

Air filters of air conditioning system play a main role in improving indoor air quality. However there is not enough information about air filters and any official maintenance standards or guidelines for air filters in Korea. The aims of this study are proposal for air filter test methods after installation and basic data about air filter maintenance guidelines or standards. In this study, arrestances, pressure losses and microorganisms between the upstream and the downstream of air filters were measured with digital dust indicators, a micro manometer and blood agar plates. Measurements were conducted before and after washing out pre filters and outdoor air untake ratio varied between 10%, 20% and 30% under actual operating conditions. The results of this study is as follows. Arrestance increased depending on whether the input of outdoor air was added. However some cases did not follow the trend. Pressure loss decreased depending on whether the input of outdoor air was added to AHUs which have built-out type return fans and vice versa in the built-in type. In contrast, the colony counts of microorganisms increased in the downstream of air filters. The rates of increase dropped depending on the addition of the input of OA. Arrestance increased, pressure loss decreased and the rates of increase of microorganisms dropped after washing out prefilters. Medium filter replacement is the main factor for arrestance, prefilter replacement or washing is the main factor for microorganisms but the range of fluctuation in differential pressure was hard to recognize as 1∼4mmAq. As for the results, proper maintenance for air filters, periodical washing out prefilters are important and development air filter performance test methods, standards or guidelines of dust concentration and microorganisms in AHUs after installation are required.

공동주택의 에너지 절약 및 공기환경개선을 위한 열교환기의 성능평가

김범석,정용호,박병윤,손장열 대한건축학회 2003 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.23 No.1

This study was aimed to suggest the appropriate residential heat and moisture recovery ventilation systems(HRVs) in order to maintain an acceptable indoor air quality for the climatic conditions of Korea. This study was developed from experimental data on HRV Performance specifications and HVAC system. Results show that total heat exchangers of rotary type is applied on HVAC system that is possible to conserve energy and improve indoor air quality.

Gemcitabine and oxaliplatin in patients with unresectable biliary cancer including gall bladder cancer: a Korean Cancer Study Group phase II trial

Jang, Joung-Soon,Lim, Ho Yeong,Hwang, In Gyu,Song, Hong Suk,Yoo, NaeChoon,Yoon, SoYoung,Kim, Yeul Hong,Park, Eunsik,Byun, Jae Ho,Lee, Myung Ah,Oh, Suk Joong,Lee, Kyung Hee,Kim, Bong Seog,Oh, Sang Cheu Springer-Verlag 2010 Cancer chemotherapy and pharmacology Vol.65 No.4

에탄올성 간손상 흰쥐의 유해산소 생성효소계에 미치는 칡 추출물의 영향

조수열,김명주,박은미,박지윤,장주연 한국노화학회 2001 한국노화학회지 Vol.11 No.1

아파트가격의 결정 요인에 관한 연구 : 대구시(중구, 동구, 수성구) 사례연구

김타열,장찬호,윤종현 영남대학교 환경문제연구소 2000 環境硏究 Vol.19 No.2

주택은 인간생활의 터전으로 다양한 가치를 지니고 있다. 한 가족의 주거생활이 이루어지는 공간으로서의 사용가치 (use value)와 매매와 교환이 가능한 경제재로서의 교환가치 (exchange value)가 있다. 이러한 주택의 가치는 주거환경에 대한 서비스와 수준을 의미하며 따라서 주택가격은 주택의 가치에 대한 척도가 되고 있다. 한편,주택시장은 특정지역에 있어 생활환경의 차이에 따라 상이한 시장구조가 형성되고 주택가격이 상이하다. 소득수준이 증가하고 교육수준이 높아짐으로써 더욱 높은 주거수준을 요구하게 되고 주택의 가치평가에 대한 기준이 상이하다. 주택은 동일한 상품으로 그 가치를 평가할 수 없으며 주택가격을 결정하는 요인은 지역의 여건과 시간의 변화에 따라 상이하다. 주거의 질적 수준은 주택가격에 의해 설명된다. 주택가격에 영향을 주는 요인을 규명하는 것은 주택시장의 특성을 파악하는데 가장 중요한 요소이다. 본 연구의 목적은 오늘날 주택의 유형 중 많은 비중을 차지하고 있는 아파트를 대상으로 아파트가격에 영향을 미치는 요인을 규명하는 것이다. 아파트가격의 영향요인을 아파트의 물리적 특성과 아파트 단지의 특성, 도시공간상에서 아파트의 입지적 특성 측면에서 분석하였다. 아파트가격 결정요인을 파악하기 위한 연구의 방법은 귀납적 접근으로서 수량화- I 류의 분석을 사용하였다. 분석결과 평수, 복도유형, 세대수, 건설업체, 버스노선수의 영향력이 높게 나타나 아파트가격에 영향을 미치는 결정요인으로 분석되었다. 아파트가격을 결정하는 영향요인 중 물리적 특성과 단지적 특성이 가장 크게 영향을 미치는 것으로 분석되었고 입지적 특성은 상대적으로 그 영향력이 가장 낮은 것으로 분석되었다. 주거환경의 수준은 주택가격을 형성하는 요인들과 관련이 있다. 향후 주택가격 결정요인들을 고려한 주택공급 및 주택정책방안의 모색이 필요하다. Since the late 1980s, korean housing policy has been oriented to supply a large amount of housing units to response 19 the shortage of housing stack. Apartment among the various types of house has been built mainly and are expected to be a large part of housing market. In this respect, apartment price is very important to draw out housing policy in Korea. The purpose of this paper is to define the factors affecting the apartment price a from the viewpoint of three group variables such as characteristics of apartment building, apartment site, locational in the city. The applied data come from surveying the factors relation to the prices of 104 apartment units in 30 apartment sites. The result shows that apartment price is higher as the size of housing is bigger, corridor type is complex, construction company is more recognized and the number of households in site is more. In conclusion, apartment price is affected by physical characteristics of apartment such as the housing size, corridor type and the characteristics of apartment site such as construction company and the number of households more than locational characteristics of apartment.

복강경하 질식 전자궁적출술 (LAVH) 570예에 대한 임상적 고찰

최장열 ( Jang Yeul Choi ),송정인 ( Jung In Song ),황병철 ( Byung Chul Whang ),이순표 ( Soon Pyo Lee ),최유덕 ( Yu Duk Choi ),박찬용 ( Chan Yong Park ),윤성준 ( Seong Jun Yoon ) 대한산부인과학회 2004 Obstetrics & Gynecology Science Vol.47 No.10

목적 : 복강경하 질식 전자궁적출술을 시행받은 부인과 환자에 있어서 환자들의 특징과 임상 결과를 보고하여 그 효율성을 평가하기 위하여 후향성 연구를 시행하였다. 연구 방법 : 2001년 9월부터 2004년 2월까지 가천의과대학교 길병원 산부인과에서 골반경하 질식 전자궁적출술을 시행받은 570명의 환자를 대상으로 하였다. 평균 나이, 출산력, 체중, 이전 수술 기왕력, 수술 적응증, 수술 결과, 그리고 수술 합병증 등을 비교하였다. 결과 : 평균 나이는 Objective : To evaluate the clinical outcome and characteristics of laparoscopy assisted vaginal hysterectomy (LAVH) in gynecologic patients. Methods : From September, 2001 to February, 2004, total 570 cases of patients were performed LAVH at Gacheon medi