• Journal of Preventive Medicine and Public Health
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• 제29권1호
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• pp.43-50
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• 1996

We experienced a case of nephropathy in chronic lead poisoning. The patient was 43-year-old male who has been working in secondary lead smelting plant for 14 years. On admission, blood pressure was 160/90 mmHg and the others were non-specific. In past history, he received chelating agent administration for lead poisoning irregularly and medicated for gout, and the blood lead concentration was $180.0{\mu}g/dl$ on 2 months before admission. Smoking habit has been 1 pack per day for 15 years and drinking habit has been 1 bottle of Soju per day but less flow. In liver function test, AST/ALT were 27/28 IU/l and $\gamma-GT$ was 456 IU/l. In blood test, Hb : 11.5 g/dl, Hct : 34.0% and basophilic stipplings were found in peripheral blood smear. Chest PA was normal and abdominal ultrasonographic finding was non-specific except fatty liver. In the test of lead exposure indices, $PbB:83.0{\mu}g/dl,\;PbU:28.3{\mu}g/l$, and blood ZPP was $300.0{\mu}g/dl$. And in renal function test, BUN : 31.4 mg/dl, blood creatinine : 2.7mg/dl, blood uric acid. 9.1 mg/dl, urinary albumin : 100.0 mg/g creatinine, urinary $\alpha_1-microglobulin$ : 120.5 mg/g creatinine, urinary $\beta_2-microglobulin$ : $183.8{\mu}g/g$ creatinine, and 24 hours urinary creatinine clearance was 31.9 ml/min. The ultrasonoguided renal biopsy showed the global sclerosis of glomerulus, moderate atrophy and loss of tubule, and interstitial fibrosis in light microscopy. There were diffuse losses of brush border of proximal tubule in electronmicroscopy.

• Journal of Preventive Medicine and Public Health
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• 제26권1호
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• pp.74-85
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• 1993

유기용제 취급 근로자들의 간기능 장해의 새로운 지표로서 혈청 Succinyl trialanine p-nitroanilide (STN) 가수분해 효소 활성치에 관한 연구가 신발제조업 제화부서에 근무하는 종사자 114명을 대상으로 시행하여 다음과 같은 결과를 얻었다. 1. 전체 대상자의 간기능 검사치인 혈청 GOT, GPT, ${\gamma}GT$의 평균은 $22{\pm}12.32IU/l,\;20{\pm}9.65IU/l,\;28{\pm}21.35IU/l$였고, 혈청 STN 가수분해 효소 활성치는 $0.08{\pm}0.05$였다. 2. 혈청 STN 가수분해 효소 활성치는 남자에서 통계학적으로 유의하게 높았고(P<0.05), 연령군별로는 차이가 없었다. 3. 일일근무시간별 혈청 STN 가수분해 효소 활성치는 차이는 없었으나, 3년이상 근무한 근로자와 100ppm이상의 톨루엔에 노출된 근로자에서는 혈청 STN 가수분해 효소 활성치가 통계학적으로 유의하게 증가하였다(p<0.05). 4. 톨루엔 노출농도와 혈청 GOT, GPT, ${\gamma}GT$ 및 혈청 STN 가수분해 효소 활성치 사이에는 통계학적으로 유의한 상관관계를 나타냈다(p<0.01). 5. 혈청 STN 가수분해 효소 활성치에 영향을 미치는 요소중에서 톨루엔 노출농도가 가장 설명력이 높고, 통계학적으로 유의하였다(P<0.05).

• Journal of Preventive Medicine and Public Health
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• 제30권4호
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• pp.791-804
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• 1997

Irritable bowel syndrome(IBS) is one of the common health problem that has been considered as stress-induced. This study was conducted to investigate the relationship between life style and the level of stress and IBS by structured questionnaire which included questions on life style, the self-esteemed gastrointestinal symptoms, and Psychosocial Well-being Index(PWI). Subjects were 1,498 male white collars who get the regular health check and participated in survey at Inje University Health Promotion Center from January to ,December, 1996. The overall prevalence of IBS was 37.5%(561 cases), and the level of stress by PWI score was higher in IBS group$(41.8{\pm}14.2)$ than symptom-free group$(34.6{\pm}12.6)$. As the result of comparison between the two groups, heavier smoking (adjusted O.R=2.48, 95% C.I 1.81-3.41), longer daily working time (adjusted O.R=5.19, 95% C.I 3.59-7.56), stimulatory food materials-mainly hot or salty (adjusted O.R=1.87, 95% C.I 1.44-2.45), higher body mass index (adjusted O.R=1.80, 95% C.I 1.27-2.57), and higher level of stress (adjusted O.R=2.81, 95% C.I 1.80-4.43) were estimated as risk factors of IBS. On the contrary, 6-8 hours sleeping per day (adjusted O.R=0.38 95% C.I 0.21-0.70), 3-4 times exercise per week (adjusted O.R=0.57 95% C.I 0.39-0.83), and tenure more than 20 years (adjusted O.R=0.25 95% C.I 0.16-0.35) were considered as protective factors to IBS. In summary, the assessment of the stress level might be placed in the first priority to control IBS, at least by some degree, which suggested that IBS could be controlled by avoiding such risk factors and by encouraging such protective factors.

• 한국유기농업학회지
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• 제20권4호
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• pp.503-518
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• 2012

본 연구에 적용된 한국형 무경운(no-tillage)농법은 한국의 기상특성 및 농업현실에 맞도록 초기 두둑을 형성한 후 이를 지속적으로 재활용하는 방식을 적용하였다. 한국형 무경운 농법은 생산량 저하 등 부정적인 영향이 거의 없는 것으로 보고되었으며 경운작업 등 농자재사용은 크게 절감되는 효과로 인하여 에너지 및 농자재 비용의 절감과 노동시간 단축 등 긍정적인 효과가 높은 것으로 보고되었다(Yang et al., 2012). 무경운농법에 의한 고추재배는 일반적인 고추재배 방식과(국가평균) 비교하여 10a ($1,000m^2$)당 $344.7kgCO_2$(58%)의 온실가스저감 효과를 갖는 것으로 분석되었다. 이 중 비료절감에 의한 직-간접효과가 92%, 에너지사용 절감에 의한 효과는 44%로 높은 탄소저감효과를 나타내었다. 또한, 무경운농법의 직접적인 효과에 부가하여 무경운방식의 토양관리는 일반적으로 시간이 흐를수록 토양의 탄소격리 효과가(carbon sequestration effect) 높아지는 특징을 갖고 있기 때문에 연속적인 무경운농법을 수행할 경우 연구대상지의 지속적인 탄소저감 효과가 기대된다. 본 연구의 결과를 바탕으로 한국형 무경운농법은 농업부문 국가온실가스 저감목표 달성을 위한 주요한 녹색농업기술(agro-green technologies)로서 역할을 수행할 것으로 기대되며, 관련기술의 보급 및 확대를 위한 국가적 차원의 노력이 절실히 요구된다.

• Journal of Preventive Medicine and Public Health
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• 제38권1호
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• pp.45-52
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• 2005

Objectives : To investigate the fatigue subjective symptoms and VDT related risk factors in bank workers. Methods : A total of 2178 workers (62.8% male, 37.2% female) were surveyed with a self-administered and structured questionnaire consisting of 30 fatigue symptoms and other VDT related factors regarding work characteristics, work postures, work environments, personal medical histories, etc. Fatigue subjective symptoms were divided into 3 groups of 10 questions each: a dull, drowsy and exhausted feeling (Group I), a mental decline of working motivation (Group II), or a feeling of incongruity in the body and dysfunction of autonomic nervous system (Group III). Each question was weighted as 0 for 'none', 1 for 'sometimes', and 2 for 'always'. Results : Mean age was $35.8{\pm}7.2$ years ($38.9{\pm}6.0$ in males, $30.6{\pm}5.8$ in females), Mean work duration was $7.7{\pm}7.1$ years ($8.4{\pm}7.4$ in males, $6.5{\pm}6.4$ in females). Mean symptom score in males was $11.0{\pm}8.1$ ($4.9{\pm}3.1$ in Group I, $3.0{\pm}3.1$ in Group II, $3.1{\pm}2.8$ in Group III) and in females was $17.5{\pm}9.5$ ($7.0{\pm}3.8$ in Group I, $4.6{\pm}3.5$ in Group II, $5.9{\pm}3.4$ in Group III). Mean scores were higher in the order of Group I>III>II. Females had significantly higher scores than males in all three groups (p<0.001). Most common symptoms complained of as 'always' or 'sometimes' were feel strained in the eyes' (85.4%) among Group I, 'find difficulty in thinking'(54.2%) among Group II, and 'feel stiff in the shoulders (72.3%) among Group III. In multiple regression analysis, female, non-straight spine at workstation, more VDT work hours, history of physical therapy, glare of screen, overtime work, young age, and non-horizontal elbow position were significantly related with high score of symptoms. Conclusions : More supportive VDT work environment and education for correct work postures for VDT workers are recommended.

• Journal of Chest Surgery
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• 제46권5호
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• pp.340-345
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• 2013

Background: This study aims to evaluate whether or not the method of right vertical axillary minithoracotomy (RVAM) is preferable to and as reliable as conventional sternotomy surgery, and also assesses its cosmetic results. Methods: Thirty-three patients (7 males, 26 females) with atrial septal defect were admitted to the Cardiovascular Surgery Clinic of Cukurova University from December 2005 until January 2010. The patients' ages ranged from 3 to 22. Patients who underwent vertical axillary minithracotomy were assigned to group I, and those undergoing conventional sternotomy, to group II. Group I and group II were compared with regard to the preoperative, perioperative and postoperative variables. Group I included 12 females and 4 males with an average age of $16.5{\pm}9.7$. Group II comprised 14 female and 3 male patients with an average age of $18.5{\pm}9.8$ showing similar features and pathologies. The cases were in Class I-II according to the New York Heart Association (NYHA) Classification, and patients with other cardiac and systemic problems were not included in the study. The ratio of the systemic blood flow to the pulmonary blood flow (Qp/Qs) was $1.8{\pm}0.2$. The average pulmonary artery pressure was $35{\pm}10$ mmHg. Following the diagnosis, performing elective surgery was planned. Results: No significant difference was detected in the average time of the patients' extraportal circulation, cross-clamp and surgery (p>0.05). In the early postoperative period of the cases, the duration of mechanical ventilator support, the drainage volume in the first 24 hours, and the hospitalization time in the intensive care unit were similar (p>0.05). Postoperative pains were evaluated together with narcotic analgesics taken intravenously or orally. While 7 cases (43.7%) in group I needed postoperative analgesics, 12 cases (70.6%) in group II needed them. No mortality or major morbidity has occurred in the patients. The incision style and sizes in all of the patients undergoing RVAM were preserved as they were at the beginning. Furthermore, the patients of group I were mobilized more quickly than the patients of group II. The patients of group I were quite pleased with the psychological and cosmetic results. No residual defects have been found in the early postoperative period and after the end of the follow-up periods. All of the patients achieved functional capacity per NYHA. No deformation of breast growth has been detected during 18 months of follow-up for the group I patients, who underwent RVAM. Conclusion: To conclude, the repair of atrial septal defect by RVAM, apart from the limited working zone for the surgeon in these pathologies as compared to sternotomymay be considered in terms of the outcomes, and early and late complications. And this has accounted for less need of analgesics and better cosmetic results in recent years.

• Restorative Dentistry and Endodontics
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• 제22권1호
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• pp.396-412
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• 1997

The purpose of this study is to observe the corrosion characteristics of five dental amalgams(CAULK FINE CUT, OPTALLOY II, DISPERSALLOY, TYTIN, and VALIANT) in the solutions with fluoride compound through the anodic polarization curve obtained by using a potentiostat. After each amalgam alloy and Hg being triturated, the triturated mass was inserted into the cylindrical metal mold, and condensed by hydraulic pressure(160 kg/$cm^2$). Each specimen was removed from the metal mold. Specimens were polished with the silicone carbide grinding paper 24 hours after condensation and stored at room temperature for 1 week. The anodic polarization curves were employed to compare the corrosion behaviours of the amalgams in 0.9 % saline solution and in the saline solutions with 2.2 ppm, 0.05 %, 2 % NaF, and 8 % $SnF_2$ at $37^{\circ}C$ with 3-electrode potentiostat. After the immersion of specimen in electrolyte for 30 minutes, the potential scan was begun. The potential scan range was -1500m V to + 800m V(vs. S.C.E.) in the working electrode and the scan rate was 50 mV/sec. The results were as follows, 1. The corrosion potential, the potential of anodic current peak, and transpassive potential in the saline solutions with NaF shifted to lower direction than those in normal saline solution, and the current density in the saline solutions with NaF was higher than that in normal saline solution. The differences were increased as the concentrations of NaF became higher. 2. The corrosion potential and transpassive potential in the saline solution with $SnF_2$ shifted to higher direction than those in normal saline solution, and the current density in the saline solution with $SnF_2$ was higher than that in normal saline solution after the corrosion potential. The anodic polarization curves in the saline solution with $SnF_2$ had no outstanding anodic current peak. 3. The corrosion potentials for high-copper amalgams were much higher than those for CAULK FINE CUT and OPTALLOY II in normal saline solution, but, as the concentrations of fluoride compound became higher, the differences in corrosion potentials between them were decreased. The corrosion potentials had the similarity in the saline solution with 2% NaF or 8% $SnF_2$. 4. The current density for TYTIN was the lowest among the others in normal saline solution and in the saline solution with 2.2 ppm or 0.05 % NaF. 5. There was no significant difference in current density between Pd-enriched VALIANT and other high-copper amalgams.

• 시큐리티연구
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• 제15호
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• pp.147-171
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• 2008

수사경찰은 과중한 직무와 위험한 직무환경, 낮은 보수수준 등으로 인해 직무만족의 수준이 낮다는 문제가 지적되어 왔다. 따라서 우리나라에서는 경찰의 수사부서 기피문제의 심각성과 수사경찰의 자질부족 문제를 해결하고자 2005년 1월부터 수사경과제를 시행하고 있다. 이 연구는 현시점에서 범죄수사를 담당하는 수사경찰의 직무만족과 조직몰입의 정도와 그 영향요인을 조사하는 것을 목적으로 한다. 이 연구에서 제시한 독립변수로서 영향요인은 직무자체, 성취감, 책임감, 안전성, 안정성, 조직원간의 관계, 인정감, 감독, 성장발전기회이다. 그리고 매개변수는 직무만족이고 종속변수는 조직몰입이다. 조직몰입의 경우에는 그 유형을 감정적 몰입, 계속적 몰입, 규범적 몰입으로 구분하였다. 조사결과, 책임감은 직무만족에 영향을 미치고, 직무만족은 조직몰입 즉, 감정적 몰입과 계속적 몰입에 영향을 미치는 것으로 나타났다. 이러한 연구결과에 따라서 조직몰입도를 높이기 위해서는 직무만족도를 높이는 전략이 필요함을 알 수 있었다. 특히 직무만족도를 높이기 위해서는 책임감을 향상시키는 방안이 필요하다. 2005년 이래로 수사경과제가 시행되고 있음에도 불구하고, 수사경찰의 직무환경은 큰 변화가 없는 것으로 조사되었다. 실제로 이를 반영하듯 안전성, 안정성, 성장발전기회에 대한 수사경찰의 인식은 낮은 것으로 조사되었으므로 이 연구는 다음과 같이 그 개선책을 제시하였다. 첫째, 경제적여건의 개선을 위해 수사에 소요되는 제반비용을 지급하는 실비보상 방안을 제시하였다. 둘째, 안전성 향상을 위하여 다양한 경찰장구의 개발과 장비의 충분한 지급을 제안하였다. 셋째, 직무수행 시의 원활한 직무수행과 신체적 활력의 제고하기 위하여 근무시간을 하향 조정하는 방안을 제시하였다. 넷째, 책임감 향상을 위한 전제조건으로서 수사권 현실화를 제안하였다.

• 시큐리티연구
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• 제53호
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• pp.161-184
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• 2017

일반적으로 시큐리티 종사원들은 업무의 특수성으로 인해 각종 사건 사고 발생에 따른 위험성이 다른 직종의 종사원보다 쉽게 노출되어 있으며, 야간 근무 등의 불규칙한 근무시간과 신체적인 노동으로 인해 직무에 대한 만족도가 떨어지고, 조직에 대한 몰입도도 낮아져 이직에 대한 갈등이 심화될 염려가 있다. 따라서 기업 입장에서는 기업의 이익 창출에 까지 영향을 미치는 시큐리티 종사원들의 효율적인 인적자원관리를 통해 직무만족과 조직몰입 및 이직의도에 많은 관심을 가져 기업이 경쟁력을 갖추고 발전할 수 있도록 노력해야 한다. 본 연구에서는 공기업 카지노 시큐리티 종사원의 직무만족이 조직몰입 및 이직의도에 미치는 영향을 규명하고자 그랜드코리아레저(주)에서 근무하는 시큐리티 종사원을 대상으로 설문을 실시하였다. 이 후 SPSS 24.0을 이용하여 빈도분석, 요인분석 및 신뢰도분석, 다중회귀분석을 실시하였다. 분석 결과 공기업 시큐리티 종사원들의 직무만족이 높아지면 조직몰입이 높아지고, 이직의도가 낮아져 기업의 전체적인 안전과 경쟁력 강화에 도움을 주는 것으로 나타났다. 이에 따라 조직몰입 향상에 영향을 미치는 임금만족, 승진만족, 상사만족과 이직의도 감소에 영향을 미치는 동료만족을 향상시키는 효율적인 인적자원관리를 통해 기업의 경쟁력을 갖춘다면 국가의 경제 성장에도 큰 도움을 줄 수 있다는 점에서 본 연구는 활용이 가능하다.

• 한국콘텐츠학회논문지
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• 제15권2호
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• pp.333-343
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• 2015

본 연구는 요양병원 간병사의 낙상예방인지도에 미치는 영향요인을 파악하기 위한 서술적 조사연구이다. 자료수집기간은 2014년 7월 1일부터 8월 31일까지였다. D광역시와 N시에 소재하는 7개 요양병원의 간병사를 대상으로 편의 표집 하였다. 수집된 자료 215부 중 200부를 분석에 이용하였다. 연구결과 첫째, 요양병원 간병사의 학력, 요양보호사 자격증 유무, 근무경력과 낙상관련 교육시간에 따른 낙상예방인지도에서 유의한 차이가 있었다. 둘째, 낙상예방건강신념 중 지각된유익성, 지각된장애성, 지각된민감성과 낙상예방효능감은 낙상예방인지도와 유의한 양의 상관관계가 있었다. 셋째, 요양병원 간병사에게 영향을 주는 개인적 특성을 통제한 상태에서 위계적 회귀분석한 결과, 정적영향요인은 지각된유익성, 낙상예방효능감, 지각된민감성, 부적영향요인은 근무경력으로 나타났으며, 이들 변수의 낙상예상인지도에 대한 설명력은 31.7%였다. 이러한 결과로 요양병원 간병사의 낙상예방인지도를 증가시키기 위해 간병사의 근무경력에 따른 낙상예방효능감과 건강신념 중 지각된 유익성과 지각된 민감성을 높일 수 있는 프로그램을 적극 모색해야할 것이다.