• 한국정밀공학회:학술대회논문집
• /
• 한국정밀공학회 2004년도 추계학술대회 논문집
• /
• pp.46-49
• /
• 2004

The spider of a drum washing machine receives the repeated fatigue loadings during laundering. Although the spider is designed statically safely, it often happens fatigue failure. Therefore it requires the safe design for fatigue and needs the prediction of quantitative fatigue life. The S-N diagram for a spider material is developed by fatigue test and statistical analysis. The stresses are measured directly from strain gages on the spider. To predict the fatigue life of spider, the rainflow counting method and Miner's rule are used. The data for fatigue life are analyzed statistically. From these data, reliability estimation for fatigue life can be done and also, equivalent fatigue life can be obtained. It will be applied to make and improve to a short period for design and prototype test.

• Journal of Microbiology and Biotechnology
• /
• 제24권4호
• /
• pp.447-452
• /
• 2014

To isolate novel and useful microbial enzymes from uncultured gastrointestinal microorganisms, a fecal microbial metagenomic library of the pygmy loris was constructed. The library was screened for amylolytic activity, and 8 of 50,000 recombinant clones showed amylolytic activity. Subcloning and sequence analysis of a positive clone led to the identification a novel gene (amyPL) coding for ${\alpha}$-amylase. AmyPL was expressed in Escherichia coli BL21 (DE3) and the purified AmyPL was enzymatically characterized. This study is the first to report the molecular and biochemical characterization of a novel ${\alpha}$-amylase from a gastrointestinal metagenomic library.

• Child Health Nursing Research
• /
• 제23권3호
• /
• pp.364-374
• /
• 2017

Purpose: The purpose of this study was to describe feelings and actions of nurses following withdrawal of life-sustaining treatment from children being cared for by the nurses. Methods: Data were collected by in-depth interviews with 7 nurses from different hospitals where children receiving nursing care had life-sustaining treatment withdrawn. The interviews were conducted from August 2016 to February 2017 when all data were saturated. Interviews lasted 30~90 minutes and were conducted 2~3 times per participant. Data were analyzed using Giorgi's phenomenological research methodology. Results: The following factors constituted experiences of nurses working in pediatric wards when life-sustaining treatment was withdrawn from children: "agony and conflict in the aspects of care", "heavy mind and regret for exhausting care", "intentionally avoiding parents' sadness", "comforting sadness in the heart" and "orientation in the role of caring for children undergoing withdrawal of life-sustaining treatment." Conclusion: Findings indicate that support systems and intervention programs need to be developed so that nurses can understand and wisely deal with experiences of withdrawal of life-sustaining treatment from children who receive care from nurses.

• 가정과삶의질연구
• /
• 제16권3호
• /
• pp.39-52
• /
• 1998

This study is to find the relation between role performance on employed wives and husbands in family and family life contribution family life satisfaction and to found out variables which influence them. The samples were selected from the employed wives with children more than one in Seoul. Among 900 respondents 684 employed wives were finally selected as data. The major results are as follows: 1) Their husbands' role performance was affected by the level of communica-tion support from family members to their employment and that their own role performance was affected by the level of sex role attitude the level of communication degree of resourcefulness recognition and support from family members to their employment. 2) They contribution to family life was affected by type of wive's occupation sex role attitude job satisfaction husbands' role as spouse performance wive's role as spouse performance parent's role and economic role. 3) Influential variables on the degree of famil life satisfaction were income the level of communication the degree of resourcefulness recognition support from family members to their employment job satisfaction wive's role as parent and contribution to self·child-care However their contribution to housework was adversely affected family life satisfaction.

• 한국생활과학회지
• /
• 제23권6호
• /
• pp.999-1012
• /
• 2014

The purpose of this study is to examine depression in adulthood caused by the influence of negative life events (disaster accident, physical violence and emotional abuse) in pre-adulthood and explore the mediator effect of interpersonal maladjustment. To carry out such task, 974 people who have had negative life event experiences before the age of 18 were chosen based on the data from the 2012 Korean General Social Survey(KGSS) and Stata 10.0 was used to do the analysis. As a result, it was found that there was a direct relationship between negative life events in pre-adulthood and depression in adulthood. Specifically, experiences from an accident or disaster had a direct impact on depression. Moreover, experiences of physical violence and emotional abuse not only had a direct influence on depression, but also through maladjustment, it had an indirectly partial mediator effect that increases the chances of depression. Through this result, it was evident that negative life events from pre-adulthood had a negative effect on continuous interpersonal maladjustment as well as psychological welfare throughout the adulthood. Therefore, there needs to be thorough prevention measures on negative life events in pre-adulthood and strongly take post treatment into consideration. Through building a safe life environment, great deal of social support from social organizations should be prepared systematically.

• 대한가정학회지
• /
• 제39권1호
• /
• pp.39-51
• /
• 2001

This study was to examine the effects of economic, social, psychological, and marital resources on the relationship between retirement related stress and life satisfaction among the retired husbands and their wives. Economic resources included actual income, the amount of reduced income after retirement, and perceived adequacy of income, while social resources consisted of the supports from children, relatives, friends and neighbors. Psychological resources constituted sense of mastery and marital resource was measured by the emotional supports from the spouse. Data from 178 couples in Seoul revealed that retirees and their spouse perceived retirement as a very stressful extent, with husbands viewing their retirement as more stressful than their wives. The retirement related stress was found to be the most significant predictor on the life satisfaction of the couples. For retired husbands, life satisfaction was closely associated to sense of mastery and supports from children and relatives. The health status, perceived adequacy of income, sense of mastery, and supports from children and relatives were related to life satisfaction for wives. Therefore, the effects of personal resources on life satisfaction were smarter than that of retirement related stress for both retired husbands and their wives. Along with discussions, implications for retirement education and suggestions for future study are provided.

• Mycobiology
• /
• 제50권3호
• /
• pp.181-187
• /
• 2022

To exploit insect-derived fungi, insects were collected from seven different regions in Korea, including Gyeongbuk, Goryeong, and several fungi were isolated from them. A fungal strain designated 21-64-D was isolated from riparian tiger beetle (Cicindela transbaicalica) and morphologically identified as a species belonging to the genus Oidiodendron. Phylogenetic analysis using the nucleotide sequences of internal transcribed spacer (ITS) regions and the partial sequence of the large subunit of the nuclear ribosomal RNA (LSU) gene revealed the distinct phylogenetic position of the isolate among recognized Oidiodendron species including its closest neighbors O. chlamydosporicum, O. citrinum, O. maius, and O. pilicola. The hyphal and conidial morphology of the strain, particularly club-shaped hyphae, clearly differentiated it from its close relatives. Results indicated that 21-64-D is a novel species in the genus Oidiodendron, for which the name Oidiodendron clavatum sp. nov. is proposed.

• ALGAE
• /
• 제37권3호
• /
• pp.239-247
• /
• 2022

Enzyme-assisted hydrolysis is frequently used as a cost-effective and efficient method to obtain functional ingredients from bioresources. This study involved the enzyme-assisted hydrolyzation and purification of fucoidan from Ecklonia maxima stipe and the investigation of its anti-inflammatory activity in lipopolysaccharide (LPS)-induced RAW 264.7 cells. Fucoidans of Viscozyme-assisted hydrolysate from E. maxima (EMSFs) harvested in Jeju, Korea. Structural and chemical characterizations were performed using fourier transform infrared spectroscopy, scanning electron microscope, and monosaccharide analysis. Among fucoidans, EMSF6 was rich in fucose and sulfate and had a similar structural character to commercial fucoidan. EMSF6 showed a strong inhibitory effect on nitric oxide generation in LPS-induced RAW 264.7 cells and significantly decreased the production of LPS-induced pro-inflammatory cytokines, including interleukin-6, interleukin-1β, and tumor necrosis factor α. The anti-inflammatory potential of EMSF6 was mediated through the downregulation of inducible nitric oxide synthase and cyclooxygenase-2 expression. Thus, fucoidans from E. maxima stipe are promising candidates for functional food products.

• 성인간호학회지
• /
• 제23권3호
• /
• pp.209-220
• /
• 2011

Purpose: This study aimed to develop a model that describes factors influencing meaning in life among the middle-aged in Korea, and to verify the appropriateness of the model. Methods: The participants were 424 middle-aged residents of Daegu city, Korea. The data were collected through a structured questionnaire from October 4 to 30, 2010 and analyzed using SPSS/WIN 18.0 and LISREL 8.30. Results: Reported life satisfaction and religion had observed to have a significant direct effect on meaning in life, and coping behavior and self-esteem exhibited significant direct and indirect effect. In addition, depression, economic status, and life stress had a significant indirect effect on meaning in life. Life satisfaction was the most influential factor, and all of these variables explained 53% of the variances in meaning in life among the middle-aged. Conclusion: The findings from this study add to the body of knowledge about the factors that influence meaning in life and need further study. The variables in this study could be used as part of the assessment of the middle-aged.

• 성인간호학회지
• /
• 제14권3호
• /
• pp.438-448
• /
• 2002

Purpose: This study is aimed to search the lived experiences of the participants and to analyze the contents so that we can be assured about what the elderly wish and find the appropriate nursing intervention for them in real life. Method: This is based on a phenomenological approach. Participants of this study consist of people older than 65 years old. Data was collected from May to August in 2001. Data collection was done through in-depth interviews and observations. The time used in each interview was from 50 minutes to 2 hours. Each participant was interviewed three to five times. Giorgi's phenomenological analysis was used in data analysis. Result: The elder's wishes are 1) a respected life, 2) a happy life, 3) a peaceful life, 4) a independent life, 5) a financially independent life, 6) a satisfactory life, 7) a mind to depend on someone, 8) a serving life, 9) a historic family, 10) a happy-ending life. Conclusion: The study will contribute for the nursing intervention to enhance the quality of life and successful aging of the elderly.