• Korean Journal of Fisheries and Aquatic Sciences
• /
• v.36 no.2
• /
• pp.80-87
• /
• 2003

Recovery conditions and characteristics of a high molecular soluble protein from surimi processing wastewater in marine manufacture using calcium powder of cuttle bone treated with acetic acid (ATC) were examined. Judging from results of total-N, pH, COD, turbidity and yields, optimal treatment concentration of ATC for recovery of high molecular soluble proteins from wastewater was $1.0\%.$ The protein recovered from seafood waste (PRW) was macromolecule weight. The COD value in the wastewater treated with ATC was very high. The PRW had a $78.4\%$ in moisture, $1.0\%$ in crude lipid and $5.7\%$ in crude ash. The proximate composition, except the crude ash, of the PRW was similar to that of commercial surimi. The PRW showed white index and similar in the content and in the composition of total amino acid to those of commercial surimi. From the results of sensory evaluation on white index and texture, the heat-induced surimi gel prepared with $5\%$ subsititution of the PRW for bulking agent of commercial surimi was not significantly different compared to that prepared with the original commercial surimi.

• Journal of Energy Engineering
• /
• v.19 no.4
• /
• pp.215-220
• /
• 2010

Hydrogen is a clean and efficient energy source and is expected to take an important role in future energy demand. A possibly good route to produce hydrogen is by using biomass and organic wastes as a source through thermo-chemical conversion technology. In this study, pyrolysis of wood Pellet(Oregon pine) has been carried out in batch type fixed-bed reactor in $N_2$ atmosphere during 20 minutes to determine the optimum hydrogen generating conditions. At the influence of temperature, hydrogen yield was increased with increasing temperature. For the influence of Steam/Biomass Ratio(SBR), hydrogen yield was increased by steam addition at low temperature condition. However, effect of steam addition was insignificant over at SBR = 1. The hydrogen yield was increased with increasing SBR at high temperature condition. From result of $H_2$/CO and $H_2/CH_4$ ratio, dominant reaction was steam reforming in this experimental condition. The optimum condition for hydrogen production was determined as follows: $H_2$ yield = 38.3 vol.% (56.01 L/min kg) at $900^{\circ}C$, SBR=3.

• Journal of Korea Water Resources Association
• /
• v.49 no.3
• /
• pp.241-252
• /
• 2016

In this study, the characteristics of flow and bed changes with variation of space and length of serial spur dikes were investigated with 2 dimensional numerical simulation. Upstream spur dike was affected by flow and made a role as a single spur dike. As time increased, local scouring was developed around outside of spur dike, and migrated upstream. The aggradation of the bed at the back of spur-dike was made at the initial stage of experiment and numerical modelling. However, the aggradation of the bed was increased in the downstream area. The scour whole around a spur dike upstream was not deep as the Dimensionless spur-dike interval (b) of the dike increased. The depth of scour hole was nearly constant at the dynamic equilibrium state. The dimensionless scour depth ($y_s/H$) increased with L/b. The spur dike downstream had the characteristics of single spur dike as the L/b was larger than 10. However, the spur dike downstream was affected by the dike upstream as the L/b was less than 4, and the bed of the upstream in the spur dike was aggradated and the effects of the serial spur dikes on the bed decreased.

• Journal of Korea Water Resources Association
• /
• v.39 no.10 s.171
• /
• pp.881-890
• /
• 2006

Hydrological characteristics and urbanization effects in the Gap river catchment were investigated employing the SWAT model. The hydrological characteristics analysis showed that total runoff in the whole catchment from 2001 to 2004 consists of 44% of groundwater flow, 6% of lateral flow and 50% of surface flow under year 2000 landuse conditions. The analysis of urbanization effect using different landuse maps for year 1975 and 2000 indicated that although 5% increase in urbanized areas did not significantly impact on the total runoff in the whole catchment, a sub-basin where urbanized area increased by 32% over the past 30 years showed $68{\sim}73%$ decrease in groundwater flow and $22{\sim}66%$ increase in surface flow. It was found that urbanization decreased overall soil moisture and percolation rate except for some increase in soil moisture during dry season. Urbanization effect was found more sensitive during a dry year which has less rainfall and higher evapotranspiration than during a wet year. Therefore, from the results of this study we could infer increased flood damage during wet season and dried stream during dry season due to urbanization. To conclude, the results of this study can provide fundamental information to the eco-friendly restoration project for the three major rivers (Gap-cheon, Yudeung-cheon and Daejeon-cheon) in Daejeon Metropolitan City.

• Research in Community and Public Health Nursing
• /
• v.17 no.4
• /
• pp.512-520
• /
• 2006

Purpose: To investigate the risk factors of arthritis, this study was carried out with 1,829 Korean women aged between 40-64 who responded to a health behavior survey. Methods: Data were extracted from the results of the 2001 National Survey on Health and Nutrition conducted by the Ministry of Health and Welfare. Results: 1 Financial difficulty and continuous anxiety about health were directly associated with arthritis. The odd ratios of these two factors of arthritis were 1.43 and 1.82 respectively. 2. With regard to the presence or absence of arthritis according to demographic characteristic, the incidence of arthritis was higher in the age between 50-64, in the group whose education level was middle school or lower, and in those who experienced the death of spouse, divorce or separation. Nevertheless, it was not significantly different according to financial status and employment status. 3. Concerning the presence or absence of arthritis according to psychological characteristic, the incidence of arthritis was found to be higher in those who were not healthy by subjective health assessment, in those who were always anxious about their health, in those who were always depressed and sad, and in those who felt heavy stress. 4. With regard to the presence or absence of arthritis according to the health behavior, the incidence of arthritis was higher in postmenopausal cases and cases who were having hormone therapy, and the incidence of arthritis was higher in those who did not drink alcohol, those with BMI higher than 25, and those who slept shorter than 7 hours a day. Conclusion: Based on the above results, it is required to provide a means applicable to communities by developing preventive education that can prevent the incidence of arthritis in middle-aged women as well as intervention programs.

• The Journal of Korean Medicine
• /
• v.31 no.3
• /
• pp.34-46
• /
• 2010

Objective: This experimental study was performed to examine if Hang-Am-Dan non-boiled water extracts (HAD-N) induce apoptosis in human lung carcinoma NCI-H460 cells in vitro and inhibits the growth of NCI-H460 cell-transplanted solid tumor in vivo. Materials and Methods: We cultured NCI-H460 cell lines and xenografted them to nude mice. The mice were divided into 3 groups, NCI-H460 cell alone, NCI-H460 + 90 mg/kg HAD-N treated group, and NCI-H460 + 180 mg/kg HAD-N treated group, with seven mice per group. HAD-N was orally administrated every day for four weeks. We checked their body weight and tumor weight and volumes two times a week and their absolute organ weight and biochemical blood analysis at the final day by sacrificing them. We also calculated their tumor inhibition rate (IR), mean survival time and percent increase in life span (% ILS). Results: In this study, we observed that all of the HAD-N treated mice got smaller tumors. The more doses of HAD-N used, the less IR showed at the 8th day after starting this experiment. Tumor weight and volume of HAD-N treatment groups also decreased. Mean survival time and percent increase in life span (% ILS) in the high-dose HAD-N treatment groups were higher than those of other groups. The test substances in the blood level UN results showed reduction in the significance in both HAD-N 90 mg/kg and HAD-N 180 mg/kg (p<0.01). The blood level phosphatase results in HAD-N 90 mg/kg group compared to NCI-H460 cell alone group showed a reduction in significance (p<0.05). AST levels HAD-N 180 mg/kg group compared to NCI-H460 cell alone group significance as well (p<0.05). Conclusion: We suggest that the results of the in vivo study showed that HAD-N may have potential as a growth inhibitor of tumor-induced NCI-H460 of nude mice in spite of the shortcomings of this study. More studies to overcome those shortcomings and to find out significant antitumor mechanism will be needed.

• Journal of the Korean association of regional geographers
• /
• v.13 no.6
• /
• pp.724-737
• /
• 2007

The purpose of this study is to examine festival visit motivation, satisfaction, loyalty the differences between festival local residents and visitors. Data were collected with a structures questionnaire at the Jun Nam Yeosu-city of Geobuksun of festival during 10$\sim$15 apr. 2007, 430 sample were used for statistical analysis SPSS. Data analysis method were used to Crombach's $\alpha$, reliability, kaiser measurement sample adequacy, factor analysis, t-test, regression analysis. As the results of this research, first, festival visitor's motivation were composed of five factors: a new & escape, exciting & enjoy, socialization, family togetherness, local culture understand and satisfaction were composed of three factors: event program & service, convenience facilities, enjoy, shopping & food, transportation. And second, local residents were found satisfied with the interesting & enjoy. Otherwise, Visitors were satisfied with new & escape. And third, local residents of satisfaction factor were affected interesting & enjoy, Otherwise, visitors of satisfaction factor were affected interesting & enjoy, family togetherness. And fourth, local residents of event program & service factor were affected re-visit, Otherwise, visitors of satisfaction factor were affected event program, enjoy, transportation. The final local residents of event & service factor were affected recommend intension, Otherwise, visitors of event program & service, transportation were affected recommend intension. The result of this paper may help local festival planner and marketers for festival marketing strategy.

• Journal of Ginseng Research
• /
• v.39 no.4
• /
• pp.384-391
• /
• 2015

It has been reported that Korean Red Ginseng has been manufactured for 1,123 y as described in the GoRyeoDoGyeong record. The Korean Red Ginseng manufactured by the traditional preparation method has its own chemical component characteristics. The ginsenoside content of the red ginseng is shown as Rg1: 3.3 mg/g, Re: 2.0 mg/g, Rb1: 5.8 mg/g, Rc:1.7 mg/g, Rb2: 2.3 mg/g, and Rd: 0.4 mg/g, respectively. It is known that Korean ginseng generally consists of the main root and the lateral or fine roots at a ratio of about 75:25. Therefore, the red ginseng extract is prepared by using this same ratio of the main root and lateral or fine roots and processed by the historical traditional medicine prescription. The red ginseng extract is prepared through a water extraction ($90^{\circ}C$ for 14-16 h) and concentration process (until its final concentration is 70-73 Brix at $50-60^{\circ}C$). The ginsenoside contents of the red ginseng extract are shown as Rg1: 1.3 mg/g, Re: 1.3 mg/g, Rb1: 6.4 mg/g, Rc:2.5 mg/g, Rb2: 2.3 mg/g, and Rd: 0.9 mg/g, respectively. Arginine-fructose-glucose (AFG) is a specific amino-sugar that can be produced by chemical reaction of the process when the fresh ginseng is converted to red ginseng. The content of AFG is 1.0-1.5% in red ginseng. Acidic polysaccharide, which has been known as an immune activator, is at levels of 4.5-7.5% in red ginseng. Therefore, we recommended that the chemical profiles of Korean Red Ginseng made through the defined traditional method should be well preserved and it has had its own chemical characteristics since its traditional development.

• The Journal of the Convergence on Culture Technology
• /
• v.1 no.1
• /
• pp.69-72
• /
• 2015

Abstract Social pathologic phenomenon such as low fertility, nuclear family and one person households seems to be on the rise as Korea moves towards being an aging society. We think many trouble is expected to be exit as aging society progresses, but there were few studies about an aging society, especially funeral culture. Appearance of the aging society in Korea similarly follows the course of Japan. So we studied about similar funeral culture of aging society in Japan and prepared for the funeral culture in Korea. This study will suggest a gaze on realistic objective point of view, through the way to illustrate exactly the concept of "funeral for family (家族葬)" among Japanese funeral culture(Syukacheu(終活), Chyokusou(直葬) and funeral for family(家族葬)) and will be expected to be an important guide for leading the funeral culture in Korea occur due to aging in future. And this study will give a chance to ruminate on our's funeral attitude about the deceased's dignity.

• The Journal of the Korea Contents Association
• /
• v.17 no.9
• /
• pp.212-224
• /
• 2017

This study was conducted in order to raise a question regarding limitations of career guidance as career guidance programs for university students are limited to career planning and preparation and fail to deal with career management after being employed. Accordingly, it investigated the effects of career maturity, which is mainly studied among university students, on protean career attitude and effects of protean career attitude on subjective career success. To that end, this study built a research model based on the effects of career maturity and protean career attitude on subjective career success of university students and analyzed data collected from 273 university students based on the research model. The result showed that career maturity of university students had positive effects on their protean career attitude. Especially, in career maturity, planning and independence had significant effects on protean career attitude. However, in career maturity attitude, attitude toward work had negative effects. Also, protean career attitude of university students had significant effects on subjective career success. This study aimed to explain the relationship between career of university students and relevant behaviors and perception by clarifying the structural relationship among planning, independence, attitude toward work, protean career attitude, and subjective career success. Based on the results of this study, it was suggested that career management theory should be newly introduced into career guidance program of university students.