한국인 직무 스트레스 측정도구의 개발 및 표준화

장세진,고상백,강동묵,김성아,강명근,이철갑,정진주,조정진,손미아,채창호,김정원,김정일,김형수,노상철,박재범,우종민,김수영,김정연,하미나,박정선,이경용,김형렬,공정옥,김인아,김정수,박준호,현숙정,손동국 大韓産業醫學會 2005 대한직업환경의학회지 Vol.17 No.4

Background and Purposes: Over the past three decades, numerous studies performed in Korea have reported that job stress is a determinant risk factor for chronic diseases and work disability. Every society has its own culture and occupational climate particular to their organizations, and hence experiences different occupational stress. An occupational stress measurement tool therefore needs to be developed to estimate it objectively. The purpose of this study is to develop and standardize the Korean Occupational Stress Scale (KOSS) which is considered to be unique and specific occupational stressors in Korean employees. Subjects and Methods: Data were obtained from the National Study for Development and Standardization of Occupational Stress (NSDSOS Project: 2002-2004). A total of 12,631 employees from a nationwide sample proportional to the Korean Standard Industrial Classification and the Korean Standard Occupational Classification were administered. The KOSS was developed for 2 years (2002-2004). In the first year, we collected 255 items from the most popular job stress measurement tools such as JCQ, ERI, NIOSH and OSI, and 44 items derived from the a qualitative study (depth interview). Forty-three items of KOSS, in the second year, were retained for use in the final version of the KOSS by using Delphi and factor analysis. Items were scored using conventional 1-2-3-4 Likert scores for the response categories. Results: We developed eight subscales by using factor analysis and validation process: physical environment (3 items), job demand (8 items), insufficient job control (5 items), interpersonal conflict (4 items), job insecurity (6 items), organizational system (7 items), lack of reward (6 items), and occupational climate (4 items). Together they explained 50.0% of total variance. Internal consistency alpha scores were ranged from 0.51 to 0.82. Twenty-four items of the short form of the KOSS (KOSS-SF) were also developed to estimate job stress in the work setting. Because the levels of the subscales of occupational stress were gender dependent, gender-specific standard norms for both the 43-item full version and the 24-item short form using a quartile for the subscales of KOSS were presented. Conclusion: The results of this study suggest that KOSS might be an appropriate measurement scale to estimate occupational stress of Korean employees. Further and more detailed study needs to be conducted to improve the validity of this scale.

합성수지 충전물을 이용한 충전탑에서 암모니아 처리에 관한 연구

김장호,김형호,김종수,김재홍,이경재 동아대학교 환경문제연구소 2003 硏究報告 Vol.25 No.2

In this study, packed column was chosen so as to remove ammonia gases, kinds of odor generated from industrial fields. Random packing 35mm Pallring pp., that is suitable for the environmental protection industry, was used because the packings are comparatively simple and easy to manufacture. Random packings 35mm Pallring, PP. has a form of lattice as plastic(po1ypropylene). By studying the characteristics for packing by experiment of dry pressure drop, hydraulic pressure drop, liquid hold-up and mass transfer, packed column is made as 300 [mm] in diameter, 1400 [mm] in height, the applicable criteria to the noxious gas treatment process was presented as follows.

난치성 전두엽 간질의 외과적 치료

김정목,김형일,김근수,김철진,이정청,이민철 대한신경외과학회 1996 Journal of Korean neurosurgical society Vol.25 No.11

Recent advances of neuroimaging and electrophysiological monitoring technique have contributed in improving the surgical outcome of frontal lobe epilepsy. The authors have analysed 36 consecutive cases of intractable frontal lobe epilepsy that were treated at our institute between September. 1992 and December, 1995 to determine the clinical, electrophysiological, and neuroimaging characteristics as well as to delineate the efficacy of surgical treatment in improving the seizure outcome. The patients consisted of 19 males and 17 females. The mean age of the seizure onset and the mean duration of epilepsy were 14.9 and 11.6 years, respectively. Magnetic resonance imaging(MRI) showed no lesion in 9 patients and pathological lesions in 27 patients. The types of the lesions observed included primary brain tumor, mostly low-grade glioma in 10 patients, cortical dysplasia in 4, posttraumatic scar in 4, neocortical gliosis in 3, cyst in 3, and postencephalitic atrophy in 3. Intracranial recordings were performed in 23 cases to determine the epileptogenic zone. The surgical outcome was graded according to Engle’s Classification as Class A in 20 patients. Class B in 2, Class C in 9, and Class D in 5. The surgical outcome was promising regardless of the presence or the absence of the lesion on MRI, invasive recording, age of seizure onset, and duration of epilepsy.

석탄을 원료로한 활성탄 제조와 흡착특성에 관한 연구

최동훈,김형호,김종수,김재홍,김장호 동아대학교 환경문제연구소 2001 硏究報告 Vol.24 No.2

The purpose of this study is develop manufacture technology of activated carbon for purification of water, it is investigated suitable manufactures for manufacture of activated carbon for purification of water by use anthracite coal and bituminous coal produced in internal and external through this fact, economic valuation and made method established. it is valuated wether or not suitable high degree purification by know removal characteristic organic matter such as KMnO₄Consumption, DOC, UV-254, and THMFP make use of Pilot-plant (purification of water treatment) for made activated carbon. For mixed anthracite coal and bituminous coal by means of coal tar pitch, completely melt to fixed coal tar pitch apply l50℃ heat at stainless steel box, since then compounding weight rate 1:l of anthracite coal and bituminous coal sieved material, then add coal tar pitch and caking water, mixed suitable compounding rate since then extrude and mix by diameter 5.5m extruder, extruded mold cute and dry length l0mm pellet shape by cutter and then made activated carbon.

스키장의 서비스스케이프가 고객만족과 행동의도에 미치는 영향

김형섭,장경수,이귀옥 대한경영학회 2003 大韓經營學會誌 Vol.16 No.6

The purpose of this study is to develop scale items to measure servicescape of ski resort, to measure servicescape of ski resort to use them, and to find out relationships among servicescape, customer satisfaction and Behavioral intentions. Hypotheses were developed from reviewing the existing literature and tested empirically. The survey, based on questionnaire, was conducted in ski resort. The data were analyzed using SPSS 10.0 and structural equation model by LISREL 8.51. As a result of factor analysis on servicescape of ski resort, 6 factors were extracted and titled "lift", "ski slope", "facilities layout", "safety facilities", "other facilities", and "ski equipments". The results of the study show that servicescape of ski resort has a positive relationship with customer satisfaction, but has not relationship with behavioral intention. The customer satisfaction has a positive influence on behavioral intentions.

일개 제빵회사 근로자의 제빵공 천식 유병률

김정민,권영준,주영수,임형준,이태경,강혜련,백도명 大韓産業醫學會 2008 대한직업환경의학회지 Vol.20 No.3

목적: 일개 제빵회사에서 제빵공 천식 유병률을 조사하여 제빵공 천식으로 인한 국내 질병부담을 파악하는데 기초자료를 제공하고자 하였다. 방법: 일개 제빵회사의 생산관련 근로자 596명에서 수습기간(3개월) 중이거나 참여를 거부한 216명을 제외하고,380명을 연구대상으로 하였다. 밀가루분진 노출형태에 따라 직접노출군과 간접노출군으로 직무 카테고리를 분류하고,설문조사는 ISAAC 설문항목에 직업력 등을 추가한 설문지를 사용하였다. 설문조사에서 천식이나 알레르기병과 관련된 증상이나 병력이 전혀 없는 간접노출군은 임상검사대상에서 제외하였다. 임상검사대상 233명에게 피부단자검사,혈청 특이 IgE 항체검사,산업의학 전문의와의 면담을 시행하였고,면담에서 천식이나 알레르기비염과 관련된 증상이나 병력이 확인된 31명을 연속적 PEFR 측정대상으로 하였다. PEFR 변동률로써 메타콜린 기관지유발검사대상을 선정하였고,메타콜린 기관 지유발검사에서 기관지과민성이 확인된 경우에 특이 기관지유발검사를 시행하였다. 제빵공 천식은 특이 기관지유 발검사에서 천식반응이 확인된 경우로 정의하였다. 결과: 연구대상의 밀가루 민감화율은 21.0%(직접노출군 25.9%,간접노출군 13.3%), 제빵공 천식 유병률은 3.2%(직접노출군 5.1%,간접노출군 1.8%)였다. 직접 노출군이 간접노출군에 비해 밀가루에 민감화될 위험이 높았으며(OR 2.15,95% CI=1.03∼4.51), 제빵공 천식에 이환될 위험은 통계적으로 유의하지 않았다(PR 2.52,95% CI=O.78∼8.18). 밀가루에 민감화된 군이 그렇지 않은 군에 비해 제빵공 천식에 이환될 위험이 매우 높았다(PR 38.63, 95% CI=6.14∼243.22). 결론: 이번 연구결과는 직업적으로 밀가루에 노출되는 국내 근로자에서 제빵공 천식이 적지 않을 것임을 시사하고 있다. 향후 제빵공 천식으로 인한 질병부담을 보다 정확히 파악하기 위해서는 국내에서 연구된 바 없는 밀가루 취급 사업장(제분회사 등)에 대한 연구가 필요하며,근로자의 건강과 사회경제적 위치를 보호하기 위한 체계적인 연구도 요구된다. Objectives: To determine the prevalence of baker's asthma due to flour dust in an industrial bakery in Korea. Methods: Of the 596 active workers, 380 were allocated to a category of either direct exposure (DE) or indirect exposure (IE) to flour dust and completed a modified ISAAC questionnaire. Of the 380 participants, 233 were screened by an occupational physician interview, a skin prick test, and an ELISA for serum-specific IgE antibodies to wheat flour extracts. Selected workers received serial monitoring of peak expiratory flow rate (PEFR), and positive PEFR respondents received a methacholine challenge test. The diagnosis of baker's asthma was confirmed by a specific inhalation challenge with wheat flour extracts. Results: The prevalence of sensitization to wheat flour and baker's asthma was 21.0% (25.9% DE, 13.3% IE) and 3.2% (5.1 % DE, 1.8% IE), respectively. DE had an increased risk of sensitization to wheat flour (OR 2.15, 95% CI = 1.03∼4.51). Sensitization to wheat flour and the prevalence of baker's asthma correlated significantly (PR 38.63, 95% CI = 6.14∼243.22). Conclusions: These findings indicate a considerable prevalence of baker's asthma among flour-exposed workers in Korea. Future studies will be required to survey the situation in flour mill companies and seek ways to protect the health and socioeconomic position of flour industry workers.

고효율 충전탑에서 유해가스처리

김장호,김형호,김종수 동아대학교 환경문제연구소 2001 硏究報告 Vol.24 No.2

In control technology of green house gas CO₂ exhausted, CO₂recovery by chemical absorption technology is recommended. In application to a power station and industrial field with using the absorbent MEA and AMF for carbon dioxide removal. we used packing tower(D=0.l5m, H=1.05m) for experimental apparatus on the chemical absorbtion being used extensively as recovery technique of CO₂. The pressure drop of structured packing Mellapak N. 250Y and random packing 25mm Pall nng was 5.2, 8.5 [mm H₂O/m in the gas capacity factor [kg^(1/2) m^(-1/2) s^(-1)]. Metallic Ralu-Pack 250YC, however, structured packing. has recently being used in petrochemical production plant in general. The decision of tower height depends on the number of transfer unit(NTU) and HTU influence on liquid distribute. If liquid flow is not good material separation, it is bad and usually occurs in the foolding point. In the normal condition, new systematic understanding is given on metal Ralu-Pack 250 YC.

Interleukin-1β에 의한 사람 정상 코점막 상피세포의 분비기능 및 형태 변화

김경수,윤주헌,최진우,이정권,문형진,박준호,전희선 대한이비인후과학회 1999 대한이비인후과학회지 두경부외과학 Vol.42 No.11

羅佛川 汚染에 關한 調査硏究(Ⅱ)

徐珠洙,金炯甲 진주산업대학교 1983 論文集 Vol.21 No.-

西晋州 地域에 位置하여 南江으로 흘러 들어가는 羅佛川의 季節別 水質汚染度의 變化를 調査하기 위하여 1983年 4月부터 12月까지 羅佛川의 세 지점에서 氣溫, 水溫, pH, DO, BOD, COD, 硬度, n­Hexane抽出物 SS등을 分析한 結果를 要約하면 다음과 같다. 1. pH는 各 地點이 6.8∼8.4로 나타났으며, 環境保全法 生活用水 水質基準 3級水域에 해당하였다. 2. BOD는 7.9∼32.2ppm의 분포를 보였으며 下流地點이 上流地點보다 다소 높은 傾向을 보였고 降雨量이 많았던 4月, 7月, 9月의 平均 BOD 값은 11.5ppm으로 다소 낮은 傾向을 나타냈으나 環境保全法의 3級水의 基準値(10ppm)을 대부분 넘었다. 3. COD는 10.0∼43.1ppm으로 BOD와 비슷한 傾向이었다. 4. 硬度는 51∼180ppm으로 나타났으며 上流가 下流보다 전체적으로 높았다. 5. n­Haxane抽出物, SS는 各各 0∼2.7, 10∼42ppm으로 나타났고 環境保全法 下水基準을 超過하지 않았다. To investigate seasonal variation of the water pollution of the Nabul­Cheon which is flowing into Jinju Nam­river, water temperature, pH, DO, BOD, hardness, extraction matters of n­hexane and SS were analysed at three sites of that from April to December in 1983. The results were as follow; 1. The pH value of each site was 6.8∼8.4. This was the third grade(pH5.8∼8.5) of raw water quality standard of water supplies. 2. BOD were 7.9∼32.2ppm BOD value of site A was a little higher than site C. The average BOD of April, July, September which had much rain was a little lower, but these Bod were beyond the limit of the third grade(less than 10ppm) of raw water quality standard of water supplies. 3. COD were 10.0∼43.1ppm. 4. Hrdness were 51∼180ppm. Site A higher than site C. 5. Extraction matter of n­hexane, SS were 0∼2.7, 10∼42ppm. These were not beyond the times of the waste water discharging standard.

유산균 투여가 건강한 성인의 분변미생물 및 부패산물 생성에 미치는 영향

신명수,김용재,배형석,백영진 한국미생물생명공학회 ( 구 한국산업미생물학회 ) 1996 한국미생물·생명공학회지 Vol.24 No.2

유산균의 장내균총과 부패산물 생성에 미치는 영향을 알아보기 위하여, 건강한 성인 남녀 6명의 지원자에게 Lactobacillus acidophilus 와Bifidobacterium longum으로 제조한 유산균분말(각각 1.5×10 exp (9) cells)을 하루에 2회씩 2주동안 섭취하도록 하였다. 그리고 지원자 분변으로부터 균총수 변화와 부패산물인 암모니아, indole, skatole, p-cresole량을 측정하였다. 유산균의 투여 기간중에 분변내 bifidobacteria의 수가 8.78±0.39(log cfu/g feces±S.D)에서 9.27±0.29로 증가하였고(p<0.05) 투여 중지후에는 약간 감소하였으며, lactobacilli의 수는 6.15±0.80에서 6.76±0.48로 증가하였다(p<0.05). Enterococcus 균수는 투여 기간중에 6.66±0.80에서 7.72±0.40으로 증가하였다가 투여 중지후에는 감소하는 경향을 보였다. 그리고 혐기성균인 Bacteroides는 투여중에 8.45±0.34에서 9.15±0.21으로 증가하였으나(p<0.01), 유해균주로 알려진 Closridium(lecithinase negative)과 Staphylococcus 균수는 현저히 감소하였다. 그러나, 유산균 투여 실험기간인 6주 동안 분변내 암모니아, indole, skatole, p-cresole의 유의적인 농도변화는 없었다. To investigate the effects of lactic acid bacteria administration on fecal microflora and putrefactive metabolites in human being, Lactobacillus acidophilus and Bifidobacterium longum powder (1.5×10 exp (9) cells, respectively) was administrated to six healthy volunteers (average 28 years old) twice a day for 2 weeks. During the administration of lactic acid bacteria, the numbers of bifidobacteria, lactobacilli, and enterococci in feces were increased significantly, whereas those of Staphylococcus and lecithinase-negative Clostridium were decreased considerably. In addition, a number of anaerobic Bacteroides were increased. However, the contents of fecal ammonia and putrefactive metabolites (indole, skatole, p-cresole) were not changed during the administration.