• Korean Journal of Food Science and Technology
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• v.27 no.6
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• pp.871-877
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• 1995

Dietary intake and oncogenic risk of 12 pesticides used in Korea whose oncogenic potency was known were assessed from published data. Dietary oncogenic risk (excess tumor incidence for a 70-year human life span) for Korean population was estimated to be $2.17{\times}10^{-3}$ on the basis of legal maximum residue limit, $4.33{\times}10^5$ on the basis of maximum practical residue level and $5.10{\times}10^{-6}$ on the basis of mean practical residue level of examined pesticides, all of which exceeded the negligible risk standard $1{\times}10^{-6}$ of US EPA. A systematic follow-up study on those oncogenic pesticides should be undertaken in order to mitigate the people's worry about the cancer risk by the abuse of pesticides in food production.

• Korean Journal of Social Welfare
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• v.66 no.4
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• pp.133-155
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• 2014

The purpose of this study was to understand the experiences of adolescent who are scheduled to discharge from child care institution. Data was gathered from 5 adolescent who are scheduled to discharge from child care institution within 1-2 years and qualitative case study used for data analysis. The analysis showed that adolescents of child care institution experienced separation from their parents and entered the institution with no consideration of their feelings. Then, they stayed in the institution for many years, even throughout their teenager-years, before they are released from the institution. Although feelings they experience of separation from the institution included worry and tension, those feelings were different from feelings they received from separation from their parents in a way that the former was more hopeful and future forwarding. Based on these findings, services sensitive to adolescent who are scheduled to discharge from the institution are suggested.

• Journal of the Korea Safety Management & Science
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• v.14 no.3
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• pp.101-109
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• 2012

It is commonly recognized that railway is one of the representative transportation and it offers public service based on strategies for being rapid, automation, safety. Since the opening of high speed railway, 3-hundred-million people have used it and acknowledged its efficiency. However, derailed accident at Kwangmyeong station in February, 2011, frequent malfunction of KTX-Sancheon, and accidents by engineer's careless fault damaged on credibility of safety, Especially, spreaded accidents through social networking service by cell phones amplified anxiety of public, being criticized by the press. This study analyzed statistics of past accident and cases of passing-by accident, and surveyed 152 KTX captain engineers about their recognition of the accident by careless fault and experiences of possibility of occurrence for preventing engineer's careless fault and restoring trust According to the analysis, engineers worry about responsibility and disadvantages related to the accidents for the most, and they are nervous about malfunction for the second most. This study presents prevention methods regarding the result. First, it is required to improve mental stability and concentration on their work, secondly, advanced ability to cope with malfunction or error through repetitive education and training are required to increase confidence, and for the last, improvement of operational supporting system such as ATP, GPS to prevent errors by human factors. Improvement of the system is expected to lead engineers to prevent careless fault and regain the reputation of railway.

• The Journal of Korean Obstetrics and Gynecology
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• v.15 no.4
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• pp.149-162
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• 2002

The fetus is greatly influenced by mother's health condition and her environment. So in our traditional society, the prenatal care is regarded as important for generations to birth of sound baby in mind and boy. Purpose : We aimed to reserch what kind of mother's conditions can be more influential to infant allergic disease among traditional prenatal care. Method : We investigated 91 patients who answered by a questionnaire at Dept. of Pediatrics, Oriental Hospital of Dae-jeon University. We divided patients into two groups, A(normal group;43) and B(allergic disease group;48) and analyzed those. Results : The pregnant women in the group B, generally have worse health conditions and are under the stress mentally and cannot get enough nutrition because of morning sickness and digestive trouble, but take more pungent and powdered food than the group A. Specially, the result is significant in anger and worry among other mental stresses and in digestive trouble and threatened abortion among other health conditions(according to order: p<0.001, p<0.05, p<0.01, p<0.001). We can see that pregnant woman's peaceful mentality and enough nutrition intake are most important to birth of sound baby in mind and also we can see that pregnant woman's regimen has influence on not only infant disease but also character and the infant allergic diseases are related to inheritable factor.

• Journal of Korean Society on Water Environment
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• v.28 no.5
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• pp.754-761
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• 2012

Several drinking water treatment plants (DWTPs) produce the bottled tap waters (BTWs) as pilot production and provide them for noncommercial use. In 2008, acetaldehyde and chloral hydrate were detected in some BTWs and the public worry over the safety of the water. In this study, the BTWs produced from 7 DWTPs were tested for 13 chemicals including disinfection byproducts (DBPs). The level of four trihalomethanes (THMs) were increased up to 15 days. The average concentration of them was 0.0075 mg/L at the time of bottling and it was increased to 0.0214 mg/L after 15 days. The average acetaldehyde concentration was 0.0406 mg/L at the time of bottling but it was went up to 0.2251 mg/L after 11 days and then decreased. Although the initial concentrations of DBPs were below the drinking water standard, we also traced them at different storage conditions. Temperature affected the formations of THMs and acetaldehyde concentrations significantly. While the average concentration of THMs ranged from 0.0113 to 0.0182 mg/L at $25^{\circ}C$, it was increased to 0.0132 ~ 0.0256 mg/L at $50^{\circ}C$. In case of acetaldehyde, concentration ranged from 0.0901 to 0.2251 mg/L at $25^{\circ}C$, it was increased to 0.3394 ~ 1.0591 mg/L at $50^{\circ}C$. Throughout the tests with 7 BTWs samples, none of the chemicals was exceeded the drinking water standard of Korea. Therefore, it is recommended to avoid the exposure of BTWs to sunlight or high temperature during distribution and storage.

• Journal of Gifted/Talented Education
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• v.23 no.1
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• pp.25-47
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• 2013

The purpose of this study was to explore the meaning of early entrance experiences of science gifted high school students. The subjects were 13 students who are attending science gifted high school in Seoul. The research data were collected through in-depth interviews. The qualitative study applied the phenomenological method of Giorgi. The early entrance experiences of science gifted high school students were clustered into 13 specific themes and 5 general structures. The results indicated that the early entrance students were surprised by their admissions from the school and they worry about their lack of readiness. However, they follow up their missed 1 year study after all. It took from a few weeks to 1~2 years depending on the student. At any rate, the environment of the school such as differentiated curricular, dormitory life, and studying atmospheres were helpful for the students to adopt easily. Even though they sometimes show a little deficiency, it won't be an issue, they just corporate each other and pursue their studies. As time goes on, they become friends even though they call other students 'big brother'. When the placement of gifted students take place, we do not need to hesitate because of their age, but need to consider the environment of school and characteristics of student.

• The Journal of Pediatrics of Korean Medicine
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• v.32 no.1
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• pp.1-10
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• 2018

Objectives The purpose of this study is to understand effect on respiratory disease and satisfaction of parents about acupoint sticking in hottest period of summer. Methods A survey was conducted to the parents of their children who took acupoint sticking in Dog-days for two years in a row. 17 children (10 boys, 7 girls, 4.0-12.11 years) were attached Socheongo to BL-13, BL-15, BL-17 for 3 hours. In terms of the effectiveness of the therapy, the treatment only considered as effective when there is any improvement in respiratory symptoms. Results 11 children (64.7%) from the study group have shown positive effect. There were significant improvements in frequency of having a cold or duration of a cold; duration of rhinitis; frequency of having empyema or its duration; frequency of having bronchitis; frequency of having pneumonia; frequency of having otitis media. Respiratory health VAS (Visual Analog Scale) had significant increase from 5 to 6.71 (p<0.05). 7 parents (41.2%) were satisfied with acupoint in hottest period of summer and 16 parents (94.1%) wanted to have their children get treated again in next year. From the survey, inconveniences of acupuncture were weak attachment of the acupoint (23.5%), long attaching time (11.8%), pressure about number of treatments (5.9%), worry about side effects (5.9%). Side effects have been reported; 2 pruritus (11.8%), 1 pruritus and erythema (5.9%). Conclusions Acupoint sticking in hottest period of summer improves lung symptoms in children older than three years old. However, the ways to reduce the side effects and inconveniences are needed.

• Environmental Analysis Health and Toxicology
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• v.24 no.1
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• pp.17-23
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• 2009

Nanotechnology, one of the technologies that forms the core of the recent scientific innovation, is used much in our real lives. Especially products that use nano silver are being sold, with its positive characteristics resulting from the antibacterial effects of both nano materials and silver. But critiques have pointed out that nano silver diffused into everyday life too quickly as we do not have done any comprehensive research about the material, and worry that nano silver will affect the ecology adversely. Therefore, this research focuses on investigating the toxicity of silver nanoparticles first. To compare the effects of exposure to silver nanoparticles at pre-somite stage and somite stage(10 hours after fertilization), we exposed zebrafish embryos to silver nanoparticles(15, 30 ppt) during embryogenesis, and then checked the details of catalase enzyme activity. The hatch rate decreased in the silver nanoparticles exposed groups(15 and 30 ppt); furthermore, the hatched fishes had an abnormal notochord, damaged eyes and curved tail. The catalase activities of the 15 ppt exposed group at somite stage increased relative to those in the control group. Therefore, the silver nanoparticles could seriously damage the development of zebrafish embryos. Especially, exposure to silver nanoparticles at somite stage did severer damage than exposure since pre-somite stage did.

• Journal of the Ergonomics Society of Korea
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• v.26 no.3
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• pp.35-43
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• 2007

This study aims at providing some basic material to be made use of for establishing plans through which one can reduce job-related stress, through conducting a survey on the sources of stress and then distinguishing its symptoms by the sources. As the methods of the study, we conducted a questionnaire survey of some selected medium enterprises' employees in the National Capital region and analysed the results. The questionnaire was designed by using the dynamic stress model of Cooper and Eaker and consisted of 85 questions to examine the sources of stress, the characteristics of personalities, and symptoms by each type of stress. The total valid respondents were 392 persons indicating 65.3% of the response rate. For analysing the results, a rating scale was used, and the reliability and validity were tested by using Cronbach's alpha coefficient. As the result of the study, those workers in medium enterprises were found to be put under much stress by responsibility, physical environment factors and career development factors and so on. As physical symptoms of job-related stress, eye fatigue, stiffness in their shoulders, headache, worry or anxiety, and waist ache presented most in the respondents. In addition, as behavioral symptoms, chronic fatigue was most indicated. In organizational symptoms, dissatisfaction about the company and lack of self-motivation for the job performance were found to show most. Moreover, the results indicated that the closer personalities to those appearing in persons mostly of type A they had, the more they were put under intensive stress by the vagueness of their roles and responsibility among all the job characteristics.

• Journal of East-West Nursing Research
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• v.10 no.1
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• pp.95-105
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• 2004

This study was conducted to confirm the degree of self care and problems in patients with ostomy. The subjects were 80 patients with ostomy who were visiting to OPD in K University Medical Center and were members in the Ostomy Association of Korea. Data were collected from August, 2004 to September. The research tools were a self care measure for ostomy patient developed by Park (1996) and a problem measure for ostomy patient developed by Lee (1996). Data were analyzed by t-test, ANOVA, and Pearson's correlation. The results were as following: 1. Male (65.8%) and female (34.2%) had the ostomy in the most. Age was the most 61 years old and over. 68.5% of the subjects had managed the ostomy by themselves. 2. The mean score of self care in ostomy was 3.57 score. Hygiene of skin care around ostomy in the behavior of self care was the highest as mean 4.47 score. 3. The problems were as following: 1) expense 2) a decline on Activity of Daily Living 3) discomfort in travel 4) worry about ostomy 5) trouble of workplace 4. In the relationship between self care and religion there was significant difference in religion(t= 2.727, P=.008). 5. The relationship between self care and problem with ostomy was found to have statistically significant negative correlation(r= -.237, P=.041).