• Journal of Life Science
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• v.21 no.12
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• pp.1761-1771
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• 2011

In the previous results, we developed an effective products to apply as functional foods for overcome of radiation damage and reduction of side effects in radiotherapy. To verify the prevention of UVB-induced immunosuppression of immune cell function by HemoHIM, we studied on the mechanism of the skin immune function for the protection in UVB irradiation. In studies presented here, we showed that HemoHIM can prevent UVB-induced impairment of skin immune cell function by in vitro and in vivo assay. Exposure of freshly cultured murine dendritic cells (DCs) with IL-4/GM-CSF to UVB irradiation resulted in impairment of accessory function. This suppression could be prevented by addition of HemoHIM before or after to the cultures of UVB-irradiated DCs. We also tested the effects of HemoHIM on the suppression of contact hypersensitivity (CHS) treated oral or intraperitoneal administration. This UVB-suppressed CHS was prevented by administration of HemoHIM to UVB-irradiated mice. These results suggest that HemoHIM may prevent UVB-induced immune suppression in the skin.

• Mycobiology
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• v.40 no.1
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• pp.82-84
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• 2012

The tulip tree ($Liriodendron$ $chinense$) has been widely cultivated in Korea as a street or garden tree for its large flowers, which have a superficial resemblance to tulips. Occurrence of anthracnose disease on the leaves of tulip trees growing on the campus of Gyeongsang National University, Jinju, Korea, has been observed. Based on mycological characteristics, pathogenicity, and internal transcribed spacer sequence, the causal fungus was identified as $Colletotrichum$ $gloeosporioides$. This is the first report on anthracnose disease caused by $C.$ $gloeosporioides$ on tulip trees in Korea.

• Food Science of Animal Resources
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• v.38 no.6
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• pp.1216-1225
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• 2018

Shelf-life is defined as the amount of time during which a food product retains its desired sensory, chemical, and physical characteristics while remaining safe for consumption. The food industry needs to rapidly obtain the necessary information for determining the shelf life of its products. Here we studied the approaches available for conducting accelerated shelf-life tests. Accelerated shelf-life testing is applied to a variety of products to rapidly estimate change in characteristics with time. The aim of this work was to use accelerated shelf-life testing to study the changes in pH, microbiology, and sensory characteristics of ice cream by the application of a kinetic approach and, based on the observations, to estimate its shelf life. As per the current law, there is no shelf life on ice cream. Our results suggest that the shelf life of an ice cream sample was 24.27 months at $-18^{\circ}C$, 2.29 months at $-6^{\circ}C$, 0.39 months at $-1^{\circ}C$, and 0.15 months at $4^{\circ}C$. Results of this study suggest that a set expiration date on ice cream might also contribute to effective management of ice cream characteristics in the retail chilled chain.

• Journal of Life Science
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• v.21 no.2
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• pp.251-256
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• 2011

EGCG, catechins in green tea, is a kind of phytochemical. Through the regulation of signal pathways, EGCG has been known to show anti-oxidant and anti-tumor effects in cells. In this study, we investigated the apoptotic effects of EGCG through AMP-activated protein kinase (AMPK) signal pathways, including hypoxia inducible factor-1 alpha (HIF-$1{\alpha}$). The experiments were performed in B16F10 melanoma cells in a hypoxic state. AMPK is activated by ATP consumption such as nutrient deficiency, exercise, heat shock, etc. The activated AMPK that plays an important role as an energy sensor inhibits proliferation of cancer cells, as well as inducing apoptosis. HIF-$1{\alpha}$, the primary transcriptional regulator of the response to oxygen deprivation, plays a critical role in modulating tumor growth and angiogenesis in a hypoxic state. The apoptotic effects of EGCG were studied in B16F10 cells in a hypoxic state. The results show that EGCG inhibits the transcriptional activity of HIF-$1{\alpha}$ and induces apoptosis. These observations suggest that EGCG may exert inhibitory effects of angiogenesis and control tumor cell growth in hypoxic melanoma cells.

• Journal of Preventive Medicine and Public Health
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• v.43 no.6
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• pp.505-512
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• 2010

Objectives: Because of the changing life style of Koreans, we have witnessed an increase of patients with back pain. The development of medical knowledge and technology has resulted in more numerous and better treatment methods. However, the outcomes of diverse treatments have been examined by using a few medicine-oriented measures like pain. This study aims at identifying the factors that influence the outcomes of back pain treatments by using two outcome measures (e.g., quality of life and pain). Methods: We used the questionnaire survey method for data collection. The questionnaires contained 5 categories (treatment methods, clinical conditions, exercise, quality of life and, socio-demographic characteristics). We interviewed 188 back pain patients. We used the regression analysis method to predict the quality of life or pain. Results: Surgery showed a statistically significant effect on the quality of life as well as pain. The illness period, age and exercise were turned out to be significant factors for both of the dependent variables. The social class and surgery methods showed a statistically significant effect solely on the quality of life. Conclusions: In choosing the surgical methods, doctors need to provide detailed explanations on the quality of life outcomes for each of the surgical methods to the patients.

• Journal of the Economic Geographical Society of Korea
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• v.22 no.4
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• pp.381-404
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• 2019

The paper aims to identify how North Korean various economic agents respond to the economic crisis in North Korea, and how these multiple practices are entangled with its spatiality by through the questionnaire survey and in-depth interview targeted at North Korean refugees. The paper argues that it needs to examine the marketization in North Korea in terms of the domesticating recently debated in economic geography. In this perspective, the marketization in North Korea could be explained not as a grand project 'out there' with hegemonic power, but as various economic agents within their space are constantly (re)constructed through everyday life practices. Economic agents' responses to economic crisis, economic rupture, and economic marginalization could be identified in terms of articulation between economic and non-economic factors. More specifically, the paper emphasizes everyday life responses are over-determined by their economic and non-economic factors and its effectiveness is differentiated by their power relations.

• Journal of Convergence for Information Technology
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• v.8 no.2
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• pp.19-27
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• 2018

The purpose of this study is to examine career maturity, self - management, and university life satisfaction according to general characteristics of college students. 403 students from Daegu and Gyeongbuk provinces were analyzed and analyzed by hierarchical multiple regression analysis focusing on factors such as general characteristics, personality traits, career attitude and self - management. As a result, according to the frequency and general characteristics of university life satisfaction, overall university life satisfaction was 3.29 out of 5 out of 5, and fresh students were higher than second year students. Also, the more open the personality, the higher the sincerity. The more self - management is the student who manage the life, the better the proper behavior management and physical management. In addition, students with a lower level of personality and a higher degree of readiness were more satisfied with college life than attitudes toward career maturity than those with lower grades. Based on these results, students with friendly characteristics can prepare well in career attitude maturity It is important to guide students well so that they can improve their college life satisfaction.

• Korean journal of applied entomology
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• v.44 no.3 s.140
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• pp.199-205
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• 2005

Seasonal occurrence and ovarian development of the bean bug, Riptortus clavatus Thunberg (Heteroptera: Alydidae), were studied at a soybean field and an university campus in which host plants are less available for the bug in Gyeongnam province with aggregation pheromone traps in 2004. It was assumed that the bug passed three generations per year at the university campus. Adults of the 1st generation might occur from early July to early August and that of the 2nd one from mid August to late September. Adults of the 3rd generation occurred from early October to mid November, entered reproductive diapause without carrying eggs in the ovaries of females during winter, and resumed activity from late March of the next year. Full-grown eggs in the ovaries of the overwintered females were first observed at the 1st half of May. Two peaks of occurrence, from early August to mid September and from mid October to mid November, were shown at soybean field that was sowed on May 24. The two peaks almost corresponded to those of the 2nd and 3rd generations at the university campus, respectively.

• International Journal of Internet, Broadcasting and Communication
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• v.7 no.1
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• pp.62-65
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• 2015

Wireless Sensor Network consists of several sensor nodes, these nodes loss some of their energy after the process of communication. So an energy efficient approach is required to improve the life of the network. In case of broadcast network, LEACH protocol uses an aggregative approach by creating cluster of nodes. Now the major concern is to built such clusters over WSN in an optimized way. This work presents the improvement over LEACH protocol. Hence we have different work environments where the network is having different capacities. The proposed work shows how the life time of the network will improve when the number of nodes varies within the network.

• Korean Journal of Adult Nursing
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• v.23 no.6
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• pp.605-614
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• 2011

Purpose: The purpose of this study was to investigate the relationship among loneliness, life satisfaction, social support and perceived health status, and further to identify factors affecting loneliness among hospitalized patients with pneumoconiosis. Methods: This study was a cross-sectional descriptive survey. A sample of 205 hospitalized patients with pneumoconiosis was recruited from August 10 to 27, 2011. The data were collected using structured questionnaire and were analyzed with SPSS/WIN 17.0 program. Results: The mean score of loneliness was very high (46.5). The levels of loneliness depended on several factors including the duration of coalworker caregiver, personality, exercise, hobbies and reported complications. The reported loneliness was significantly correlated with life satisfaction (r=-.204, p=.003). family support (r=-.220, p=.002), professional medical team support (r=-.303, p<.001) and perceived health status (r=-.175, p=.012). The influential factors affecting loneliness were professional medical team support, life satisfaction, and personality, perceived health status, complication and family support, which explained about 21.8% of the variance. Conclusion: The results of this study indicate that nursing intervention is needed to reduce loneliness, and to improve the perceived health status, social support and life satisfaction in the hospitalized patient with pneumoconiosis. These results can provide for evidence of nursing intervention to facilitate reduction of loneliness.