• International Journal of Industrial Entomology and Biomaterials
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• 제17권2호
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• pp.217-221
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• 2008

Dung beetle larvae at the $3^{rd}$ instar were injected with lipopolysaccaride and inducible proteins were examined within a pI level of 3-10 and a size level by proteomics, including 1-D SDS PAGE analysis and antibacterial assay. The immune infected larvae extracts provided seven protein bands in one-dimensional electrophoresis and its antibacterial activity also checked. Hemolymph protein from immune infected larvae of the dung beetle were separated by twodimensional gel electrophoresis and compared with those from native larvae. In 2-D gel electrophoresis, we detected 63 immune infected unique and 32 up-regulated proteins, and 36 proteins that were down-regulated or not present in treated gel. Ten protein spots from unique proteins and those presented as different level of abundance in infected and native larvae were specially expressed. These differentially expressed proteins were proposed to be involved in the defense mechanism against microorganism.

• 상하수도학회지
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• 제25권6호
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• pp.923-933
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• 2011

In this study, we derived seven customer value factors to evaluate the levels of service in wastewater utilities required by customers. Levels of service according to the customer value were categorized into environmental amenity, accessibility of wastewater service, affordability of wastewater charge, quality of wastewater service, health and safety of wastewater service provision, reliability and responsiveness of wastewater service provision, and satisfaction of customer service. To investigate the levels of wastewater service, questionnaires were prepared according to the customer value factors, and the questionnaire survey was performed with 800 adults in all over Korea including male and female samples. The comprehensive satisfaction score for the wastewater service was 57.5 points, indicating a slightly good satisfaction level. The detailed analysis of the result showed that the satisfaction level was high in the wastewater service accessibility and call center service provision but it was relatively low in the river water quality and nasty smell of wastewater. It was concluded that the quality of wastewater service and customer service satisfaction need to be elevated primarily in order to improve levels of wastewater service required by the customers.

• Journal of Preventive Medicine and Public Health
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• 제30권4호
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• pp.719-728
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• 1997

To guarantee the inter-reviewer reliability is very important in evaluating the quality of large number of clinical research papers by multiple reviewers. We cannot find reports on statistical methods for evaluating reliability for multiple raters in clinical research field. The purpose of this paper is to introduce the statistical methods focused on kappa statistic and five kinds of loglinear models for, which can be applied when evaluating the reliability of multiple raters. We have applied these methods to the result of a project, in which seven reviewers have evaluated the quality of 33 papers with regard to four aspects of paper contents including study hypothesis, study design, study population, study method, data analysis and interpretation. Among the five loglinear models including Symmetry model, Conditional symmetry model, Quasi-symmetry model, Independence model, and Quasi-independence model, Quasi-symmetry model shows the best model of fitting. And the level of reliability among seven reviewers revealed to be acceptable as meaningful.

• 한국산업보건학회지
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• 제23권2호
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• pp.137-147
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• 2013

Objectives: This study was conducted in order to evaluate the limitations of the regulations on the safety and health standards for special management materials(SMM) under the Industrial Safety and Health Act in Korea. Methods: Hazardous chemicals management systems in Germany(Hazardous Substances Ordinance), the UK(Control of Substances Hazardous to Health Regulations), Japan(Ordinance on Prevention of Hazards due to Specified Chemical Substances) and Korea(Regulation of Occupational Safety and Health Standards, ROSHS) were investigated and compared in terms of 14 items. Results: Among the 14 items, we eventually found seven items which should be amended: 1) definition and scope, 2) general duties clause, 3) principles of management, 4) preventive measures, 5) control measures, 6) risk assessment, and 7) record keeping. The principal limitations of Korean regulations in comparison with those of other countries were that there were no preventive measures such as substitution, and no principles of good practices for the control of exposure to SMM. In terms of control measures, there were no regulations on suitable workplace design, reducing the number of exposed workers, reducing the level and duration of exposure, and reducing the quantity of hazardous substances in ROSHS. Conclusions: Based on the results of this study, ROSHS should be complemented with preventive measures and the principles of management related to SMM. According to the suggestions, an employer who deals with SMM should preferably consider the possibility of substitution and perform substitution so far as is reasonably practicable.

• Asian-Australasian Journal of Animal Sciences
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• 제30권5호
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• pp.700-711
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• 2017

Objective: The current study aimed to investigate the impact of high-fat diets composed of different animal and vegetable fat sources on serum metabolic health markers in Japanese quail, as well as the overall lipid content and fatty acid profiles of the edible bird tissues following significantly increased dietary lipid supplementation. Methods: Fifty seven male quail were divided into six groups and fed either a standard diet or a diet enriched with one of five different fats (22% coconut oil, lard, palm oil, soybean oil, or sunflower oil) for 12 weeks. The birds were subjected to an oral glucose tolerance test following the feeding period, after which they were euthanized and blood, liver, breast, and thigh muscle samples collected. Total fat content and fatty acid profiles of the tissue samples, as well as serum uric acid, triglyceride, cholesterol, total protein, albumin, aspartate transaminase, and total bilirubin concentrations were assessed. Results: High-fat diet feeding had no significant effects on the glucose tolerance of the birds. Dietary fatty acid profiles of the added fats were reflected in the lipid profiles of both the liver and breast and thigh muscle tissues, indicating successful transfer of dietary fatty acids to the edible bird tissues. The significantly increased level of lipid inclusion in the diets of the quail used in the present study was unsuccessful in increasing the overall lipid content of the edible bird tissues. Serum metabolic health markers in birds on the high-fat diets were not significantly different from those observed in birds on the standard diet. Conclusion: Thus, despite the various high-fat diets modifying the fatty acid profile of the birds' tissues, unlike in most mammals, the birds maintained a normal health status following consumption of the various high-fat diets.

• 농촌의학ㆍ지역보건
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• 제41권3호
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• pp.129-139
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• 2016

본 연구는 재가 허약노인의 허약정도에 영향을 미치는 예측요인을 파악하기 위해 대상자의 허약정도를 확인하고 일반적인 특성, 건강증진행위, 역량강화, 사회참여, 주관적 건강상태 간의 관계를 분석한 후 다중회귀분석을 실시하였다. 연구결과로는 재가노인의 허약정도 점수는 31점 만점에 10.05점으로 고위험 허약노인군에 포함되었고, 건강증진행위는 4점 만점에 2.56점, 역량강화는 5점 만점에 2.74점, 사회참여는 5점 만점에 2.58점, 주관적 건강상태는 14점 만점에 7.17점으로 중간 정도였다. 재가노인의 허약정도는 연령이 높을수록, 생활만족도가 불만족일수록 심했으며, 허약정도와 건강증진행위, 역량강화, 사회참여, 주관적 건강 상태와는 부적인 상관관계를 나타내었다. 대상자의 허약정도를 설명하는 예측요인으로는 주관적 건강상태, 건강증진행위, 연령으로 나타났고, 이 세 변수가 허약정도의 37.4%를 설명하였으며, 이중 주관적 건강상태가 가장 주요한 예측인자로 나타났다. 따라서 재가노인의 허약을 예방하고 관리하기 위해서는 허약에 영향을 미치는 주요 예측 요인들을 반영한 중재전략을 개발, 적용해야 할 것으로 사료된다. 본 연구의 결과를 토대로 다음과 같은 제언을 하고자 한다. 첫째, 재가노인의 허약정도를 사정할 수 있는 표준화된 도구의 마련이 필요하다. 둘째, 재가노인의 허약정도를 가장 잘 예측할 수 있는 변수로는 주관적 건강상태로 나타났으므로 재가노인의 허약을 예방, 관리하는 프로그램에는 주관적 건강상태를 강화하는 내용을 포함할 것을 제언한다.

• Journal of Nutrition and Health
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• 제12권2호
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• pp.99-105
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• 1979

This study was carried out using rats weighing $40{\sim}50\;g$ which were devided into seven groups with various diet compositions emphasizing fat levels of perilla seed oil for the period of 41/2 weeks. The levels of fat in the diet were 5%, 10%, 15% and animals were fed ad libitum. The results are as follows : 1) Yellow pjgmentation of both neck and tail was clearly observed in groups fed 10% and 15% level perilla seed oil without vitamin I supplementation (IV and VII). 2) The growth rate in groups fed 15% level perilla seed oil was reduced as compared to that in groups fed 5% or 10% level perilla seed oil. 3) The mean hematocrit values of 15% level perilla seed oil groups tended to be lower than those of control group, tut the differences were not significant. 4) The serum vitamin I concentration showed different value in various groups, the values of control group were significantly higher than those of perilla seed oil groups-15% level with or without vitamin E supplementation (VI and VII) and 10% level without vitamin E supplementation (IV). According to the results, 10% level-perilla seed oil in the diet can be considered safe if vitamin E is not omitted from the vitamin mixture ana the group fed 15% fat with P/S ratio of 1 appeared to be safe during the experimental period. Finally the long-term studios have to be persued in many aspects by using perilla seed oil in the experimental diet. Because rats are known t4 be quite resistant to the experimental diets, comparative studies using various animal species have to he conducted.

• Journal of Nutrition and Health
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• 제50권4호
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• pp.391-401
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• 2017

본 연구에서는 우리나라 19세 이상 성인의 사회경제적 수준에 따른 플라보노이드 섭취행태와 그에 따른 식생활 특성을 파악하기 위해 제 4 5기 국민건강영양조사 (2007~2012) 자료의 24시간 회상법 자료와 상용식품 중 플라보노이드 함량 데이터베이스를 연계하여, 1일 총 플라보노이드 및 개별 플라보노이드 (플라보놀, 플라본, 플라바논, 플라반-3-올, 안토시아닌, 프로안토시아닌, 이소플라본)의 섭취량을 추정하였다. 그 결과, 한국 19세 이상 성인의 1일 평균 총 플라보노이드 섭취량은 남자가 321.8 mg/d, 여자가 308.3 mg/d였으며, 남녀 모두에서 가구소득수준이 높을수록 플라본과 이소플라본을 제외한 개별 플라보노이드 및 개별 플라보노이드 섭취량이 증가하였고, 교육수준이 높을수록 플라보놀, 플라반-3-올, 안토시아닌 등의 개별 플라보노이드와 총 플라보노이드의 섭취량이 유의하게 증가하였다. 소득수준과 교육수준에 따라 플라보노이드 섭취량에 가장 큰 차이가 있었던 식품군은 음료류로, 가구소득 수준과 교육수준이 가장 높은 군은 가장 낮은 군에 비해 음료류로부터 섭취하는 총 플라보노이드가 각각 2.7~2.9배, 8.2~8.9배 가량 더 많았다. 가구소득수준과 교육수준이 복합적으로 플라보노이드 섭취에 미치는 영향을 분석한 결과, 교육수준이 '대졸 이상'이면서, 가구소득수준이 상, 중 상인 군은 교육수준이 '중졸 이하'이면서 가구소득수준이 하, 중하인 군에 비해 플라보노이드 섭취량이 낮을 위험이 남자에서 63%, 여자에서 50% 더 적은 것으로 나타났다. 추후 사회경제적 수준에 따른 플라보노이드 섭취량과 임상적 지표 혹은 질병의 유병률 등과의 연관성에 대한 후속 연구가 필요할 것으로 사료된다.

• 한국산업보건학회지
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• 제24권4호
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• pp.518-527
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• 2014

Objectives: The adverse health effects attributed to exposure to radon have been well known over the world. However, the efforts for prevention and mitigation of radon have not been taken in Korea so far. The purpose of this study was to evaluate the effectiveness of mitigation methods applied for various types of houses and public buildings with high level of radon. Methods: Based on the results of "National Radon Survey" performed by the National Institute of Environmental Research(NIER) in 2010-2012, we selected 30 candidate buildings consisting of 20 houses and 10 public buildings with greater than $148Bq/m^3$ of radon level. We measured the concentration of radon in 30 buildings, using E-PERMs and RAD-7 during January to March of 2013. More than five E-PERMs and one RAD-7 per house were installed for seven days. Ten houses and five public buildings were finally chosen to be mitigated after mainly considering the level of radon and the location of buildings nationwide. Three mitigation methods such as Sealing, two types of Active Ventilation(window-shaped and wall-typed ventilations), and Active Soil Depressurization(ASD) were applied, and the concentrations of radon were measured before and after mitigation, respectively. To evaluate the effectiveness of mitigation methods, reduction rates of radon were calculated and Wilcoxon's signed-rank test was performed. Results: The mean concentration of 15 buildings just before radon mitigation was $297.8Bq/m^3$, and most of the buildings were located in Gangwon, Chungbuk, Chungnam, and Daegu areas(73.3%), and built in 1959-1998. The level of radon decreased from 48% to 90% and kept the below recommendation limit of $148Bq/m^3$ after installation of radon mitigation. Among mitigation methods applied, the reduction rate(58.7-90.4%) of radon attributed to ASD was the greatest than that of other methods, followed by Active Ventilation(48.4-78.4%) and Sealing(<22%). The effectiveness of radon reduction by window-shaped Active Ventilation(63.2-75.2%) was relatively better than that of wall-typed Active Ventilation(48.4-54.3%). Conclusions: The results of this study indicate that ASD could be more effective for radon mitigation. Moreover, our findings would be background information in future for making the strategy for radon mitigation nationwide, as well as for developing Korean-version of mitigation techniques according to types of dwellings in Korea.

• Journal of Preventive Medicine and Public Health
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• 제41권1호
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• pp.61-67
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• 2008

Objectives : Polycyclic aromatic hydrocarbons (PAH) and toluene have been reported to induce reactive oxygen species and oxidative stress. This study was performed to investigate the effects of low level exposure to PAHs or toluene on the lipid peroxidation level in elementary school children and the elderly in a rural area. Methods : Forty seven elementary school children and 40 elderly people who were living in a rural area and not occupationally exposed to PAH or toluene were the subjects of this study. Information about active or passive smoking and diet was obtained using a self-administered questionnaire. The urinary 1-hydroxypyrene (1-OHP), 2-naphthol, hippuric acid and thiobarbituric acid reactive substance (TBARS) concentrations were measured, and these values were corrected with the urinary creatinine concentration. Results : In school children, the geometric means of the urinary 1-OHP, 2-naphthol, hippuric acid and TBARS levels were $0.02\;{\mu}mol/mol$ creatinine, $0.47\;{\mu}mol/mol$ creatinine, 0.14 g/g creatinine and $0.95\;{\mu}mol/g$ creatinine, respectively. Those values for the elderly were $0.07{\mu}mol/mol$ creatinine, $1.87{\mu}mol/mol$ creatinine, 0.11 g/g creatinine and $1.18\;{\mu}mol/g$ creatinine, respectively. The mean levels of urinary 1-OHP, 2-naphthol and TBARS were significantly higher in the elderly subjects than in the children. The urinary TBARS level was not correlated with the urinary 1-OHP, 2-naphthol and hippuric acid, but they were correlated with the age of the subjects. Conclusions : These results suggest that low level inhalation exposure to PAH or toluene does not markedly increase lipid peroxidation, and age is a significant determinant of lipid peroxidation.