• Carbon letters
• /
• v.7 no.3
• /
• pp.196-200
• /
• 2006

Graphite has hexagonal closed packing structure with two bonding characteristics of van der Waals bonding between the carbon layers at c axis, and covalent bonding in the carbon layer at a and b axis. Graphite has high tolerant to the extreme conditions of high temperature and neutron irradiations rather than any other materials of metals and ceramics. However, carbon elements easily react with oxygen at as low as 400C. Considering the increasing production of today of hydrogen and electricity with a nuclear reactor, study of oxidation characteristics of graphite is very important, and essential for the life evaluation and design of the nuclear reactor. Since the oxidation behaviors of graphite are dependent on the shapes of testing specimen, critical care is required for evaluation of nuclear reactor graphite materials. In this work, oxidation rate and amounts of the isotropic graphite (IG-110, Toyo Carbon), currently being used for the Koran nuclear reactor, are investigated at various temperature. Oxidation process or principle of graphite was figured out by measuring the oxidation rate, and relation between oxidation rate and sample shape are understood. In the oxidation process, shape effect of volume, surface area, and surface to volume ratio are investigated at $600^{\circ}C$, based on the sample of ASTM C 1179-91.

• Korean Journal of Occupational Health Nursing
• /
• v.17 no.2
• /
• pp.155-165
• /
• 2008

Purpose: The purpose of this study was to investigate the condition, recognition of breast feeding of 273 nurses. Method: Data was collected using a structured questionnaire form April to June 2007. The subjects were 273 nurses in Kyunggido. The data analysis was done with descriptive statistics, $x^2$-test procedures using SPSS/WIN 12.0 PC. Result: There are 23.9% of child day care center, 5.2% of rest room for women, 16.8% of breast feeding room in workplace. Rate of breast-feeding practice was 78.4% of nurses. The reasons why they could not perform the breast-feeding include mother's job(45.4%), lacking breast milk(25.8%). The characteristics of nurses found to be related breast-feeding include age, number of employers. Conclusion: The results showed that the rest supports of the work environment was insufficient to perform breast-feeding in the workplace. These results suggest that nursing intervention for employed mother's breast-feeding practice behavior promotion should focus on characteristics influencing factors on workplace. Also, efficient breast-feeding education program for employed mothers should be developed by continuous qualitative researches based on breast-feeding experiences of employed mothers.

• 제어로봇시스템학회:학술대회논문집
• /
• 1988.10b
• /
• pp.885-890
• /
• 1988

This is a successive study of the development and application of an electronic safeguard system for elderly men (senile dementia patients) who wander without purpose because of declined mental capability, while retaining their physical ability. The new safeguard system is designed with some additional functions on the basis of the previously developed system. Firstly, alarms are designed not to disturb other patients at night, so that informations about doors from which the patients go out may be transmitted to helpers individually by radio paging system. Secondly, the system hardware can be set up anywhere without laying particular signal transmission cables, provided that there exist AC power distribution lines for the utilization as a transmission line of signals to alarm indicators. Thirdly, it is possible to have a grasp of the whole states of the safeguard systems at the center of operation by monitoring the operational state of each system with a necessary data acquisition according to its instruction through telecommunication network. Thus, each safeguard system can be economically supplied to the special nursing homes and the helpers are ensured more released from physical and psychological burdens so that they can devote themselves to the care of senile elderly men, thereby improving their patients' comfort and human dignity.

• Korean Journal of Biological Psychiatry
• /
• v.11 no.1
• /
• pp.61-63
• /
• 2004

We describe the case of a 73 year-old female patient, YSG, who initially presented with a manic episode without any previous psychiatric history and was later diagnosed as having a meningioma in the left frontal lobe. YSG's symptoms were characterized by hyperactivity, insomnia, aggressive behavior with an auditory hallucination. She showed no abnormal signs on a complete neurologic examination. A gadolinium-enhanced MRI study showed a huge, extra-axial mass with homogenous enhancement in the left high convexity of the frontal lobe. Her manic symptoms subsided after administration of risperidone 1mg and valproic acid 500mg daily, for three weeks without surgical resection of the tumor. These findings suggest that YSG's mania might have resulted from the left-sided frontal tumor, and that her symptoms were treated rapidly by small doses of risperidone combined with valproic acid. Medical staff who care for manic patients should be aware of this possibility of a organic lesion without evidence of neurologic disease.

• Korean Journal of Adult Nursing
• /
• v.23 no.2
• /
• pp.111-122
• /
• 2011

Purpose: The aim on this study was to establish the validity, reliability and efficiency of a Pain Self-Report Scale for elderly with dementia and compare these results with an observational pain rating scale. Methods: Study subjects were 136 elderly with dementia who were residents in a nursing home, geriatric hospital, or day care center. The subject's pain was measured by five self-report scales and observational scale. DS-DAT (discomfort scale-dementia of the Alzheimer's type) was used for pain behavior observational measure. Cognitive state was assessed using the MMSE (Mini-Mental State Examination). Results: Observational rating correlated moderately with self-report (r=.225~.585, p<.05) and tended to underestimate pain intensity. Test-retest reliability was high for all five self-report scales, and the correlation between these scales was very strong (r=.735~.856, p<.05). Comprehension rate of VDS (verbal descriptor scale) was 88.3%, and NRS (numeric rating scale) 69.9%, FPS (face pain scale) 66.9%, HVAS (horizontal visual analog scale) and VVAS (vertical visual analog scale) 65.4%. Conclusion: Nurses should not apply observational scales routinely in demented patients as many of these are capable of reporting their own pain. Self-report, the highest standard of pain measurement can be reliably performed in a large proportion of demented elderly.

• Korean Journal of Childcare and Education
• /
• v.12 no.3
• /
• pp.21-39
• /
• 2016

The purpose of this study was to examine the relationship between parental attribution and self-perception in parenting roles according to parenting success or failure situations. A total of 138 mothers who have toddlers in Seoul and other big cities in Korea completed questionnaires, and data were analyzed by paired t-test, Pearson's correlation coefficient, Fisher's Z score, and multi-regression. The results are as follows: First, mothers in parenting success situations showed higher parental attribution than mothers in parenting failure situations. Second, correlations between parental attribution and self-perception in parenting roles turned out to be significantly different between parenting success situations and failure situations. Third, both internal attribution such as ability and effort, and external attribution such as child behavior and task difficulty, significantly predicted self-perception in parenting roles including equilibrium feeling, competence, satisfaction and parenting investment, especially in parenting failure situations. The implications of the difference in parental attribution between parenting success and failure situations have been discussed.

• Journal of dental hygiene science
• /
• v.17 no.3
• /
• pp.218-225
• /
• 2017

The purpose of this study was to determine the association between drinking behaviors and the need for periodontal treatment. The data of 5,995 adults from the 2012 Korea National Health and Nutrition Examination Survey were categorized into young adulthood (19~39 years), middle age (40~64 years), and old age (${\geq}65$ years) and analyzed. Chi-square test was performed to determine those who needed periodontal treatment by the respondents' general characteristics and drinking behaviors, and logistic regression analysis was carried out to determine the impact of each drinking behavior on the need for periodontal treatment. The results of this study have confirmed that alcohol intake is a factor adversely affecting periodontal status; therefore, patients should know the fact that excessive alcohol intake and increased frequency of drinking may affect the prevalence rate of periodontal diseases. Moreover, moderate-drinking programs that can reinforce prevention of drinking so that dental hygienists can provide good oral health care should be developed. A systematic oral health promotion program should be introduced for constant prevention with the objective of activating oral health education that focused on middle-aged and young-adult people in pursuit of healthy aging society.

• Journal of the Korean Society of Clothing and Textiles
• /
• v.28 no.11
• /
• pp.1438-1447
• /
• 2004

The purpose of this study were to examine if the buyers of counterfeits tend to care less about ethical beliefs than non-buyers among Korean, Japanese, and Hong Kong consumers, and if they have more supportive attitudes toward counterfeit products. 573 female college students living in Seoul, Tokyo, and Hong Kong were surveyed. For data analysis, descriptive statistics, factor analysis, and t-test were used. As the results, 65.8% of respondents had experiences of purchasing fashion counterfeits. Handbags among fashion counterfeits were the most frequently purchased by the respondents. The buyers of counterfeits tended to purchase counterfeit goods as more alternative of genuine products than non-buyers, and did not feel guiltier toward purchasing of counterfeits than non-buyers. Also, the buyers of counterfeits tended to have more positive attitudes toward the legality of manufacturing, selling, and buying of counterfeits than non-buyers. In addition, they tended to consider much more purchasing of counterfeits as a way to fight against big-firms than non-buyers. Finally, the buyers of counterfeits tended to have lower consumer ethics than non-buyers. Based on these results, global marketing strategies for fashion goods were suggested.

• The Journal of Korean Society for School & Community Health Education
• /
• v.10 no.2
• /
• pp.85-94
• /
• 2009

Objectives: This study was conducted to improve dental health regarding behavior and understanding of dental health of day care teachers by analyzing actual dental health state. Methods: This study was performed from October 1 to October 30, 2008 for 194 teachers who worked at nurseries in Daegu. Results: In the toothbrushing recognition, 42.3% of the said that tooth brushing after eating is necessary but only 26.3% had the children bush teeth. They did not have the children brush the teeth because they did not have enough time. Many teachers (75.3%) said that dental caries could be prevented. But only 4.1% of them said that fluorine is effective for the prevention of dental caries. The preschool teachers had dental health education experience, better understood the importance of dental health education than those who did not have(p < 0.05). Conclusion: The preschool teachers who had dental health education better recognized the importance of dental health education.

• Journal of Korean Public Health Nursing
• /
• v.29 no.2
• /
• pp.177-189
• /
• 2015

Purpose: The purpose of this study was to investigate bone mineral density (BMD) and risk factors related to osteopenia in community people. Methods: The subjects consisted of 145 community people. The variables of osteoporosis knowledge and preventive health promoting behavior were measured using questionnaires. BMD and BMI (body mass index) were measured. Dietary nutrients intake related to osteoporosis was measured using 24hours recall. Data analysis was performed using the SPSS 18.0 program, using mean, standard deviation, ${\chi}^2-test$, t-test, and logistic regression. Results: Eighty six people (59.3%) had an osteopenia. According to normal group and osteopenia group, there was significant difference in gender (${\chi}^2=6.72$, p=.010) and smoking (${\chi}^2=5.18$, p=.023). Predictors of osteopenia group were male (OR=2.65, CI=1.03-8.98), BMI(OR=0.86, CI=0.72-0.96). Conclusion: Health care providers must consider factors that affect osteopenia such as gender, BMI. These results suggest the need to instruct nursing activities and interventions which are beneficial for prevention of osteoporosis.