• Journal of Internet of Things and Convergence
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• v.7 no.1
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• pp.63-69
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• 2021

This study was to empirically analyze the mediating effect of burnout in the effect of job stress on job satisfaction of workers in the elderly welfare center after COVID-19. Through this, the purpose of this study was to improve the quality of social welfare services and to provide basic data that can increase job satisfaction of Elderly Welfare Center workers. The results of this study are as follows. First, job stress had a negative effect on job satisfaction. Second, burnout had a partial mediating effect on the effect of job stress on job satisfaction. Based on the results of this study, the following suggestions were made. First, the workload should be controlled to reduce the job stress of the workers in the elderly welfare center. Second, psychological and emotional support programs should be provided to reduce the burnout of the elderly welfare center workers.

• Journal of Plant Biotechnology
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• v.50
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• pp.183-189
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• 2023

This study investigated the impact of two distinct MS basal media: one containing FeNaEDTA and the other FeEDDHA, on the growth of five unique gerbera cultivars (Shy Pink, Pink Holic, Breeze, Harmony, Snow Dream). Notably, the response to these media types varied significantly among the cultivars, particularly concerning leaf yellowing and plant growth. 'Shiny Pink' and 'Pink Holic' exhibited leaf yellowing on the FeNaEDTA-containing medium but displayed leaf greening on the FeEDDHA-containing medium. In contrast, 'Snow Dream,' 'Harmony,' and 'Breeze' remained unaffected on both medium types. However, the FeNaEDTA-containing medium promoted higher plant height and petiole length in 'Breeze,' 'Harmony,' and 'Snow Dream' than the FeNaEDTA-containing medium did. A promotive effect of silver nanoparticles (AgNPs) on plant growth and leaf greening was observed in 'Pink Holic,' particularly on the FeNaEDTA-containing medium, while the addition of AgNPs to the FeEDDHA-containing medium negatively affected plant growth. These results highlight the substantial influence of medium type, specifically the presence of FeNaEDTA or FeEDDHA, on gerbera growth responses, emphasizing the critical role of medium selection in gerbera propagation. Additionally, when contemplating the addition of AgNPs for in vitro gerbera propagation, it is crucial to consider the medium type.

• Journal of the Korean Institute of Landscape Architecture
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• v.37 no.6
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• pp.28-38
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• 2010

Community centers, silver towns and resting places are representative community facilities in rural villages. These community facilities affect villagers directly or indirectly in terms of life quality. Current community facilities of rural village are in poor condition in spite of their importance. In particular, the small size of community facilities and standardized programs are common issues in rural villages. As a result, it is necessary to research and investigate the improvement of community spaces and provide a variety of community activities. The purpose of this research is to provide appropriate area standards for 5 category community facilities(community centers, sliver towns, resting places, community yards, gymnasiums and recreation areas) and also to provide basic information for future village planning. The precedent study of community facilities was investigated. In addition, 25 rural villages in 5 districts were investigated regarding their facility conditions and current community satisfaction. As a result, appropriate rural village area standards are provided. The research results of the community facility standards are almost higher than the current representative community facilities average area. This is expected to improve the community facility environment, people's activities and to increase the growth of awareness in community.

• Journal of the Korean Society of Food Science and Nutrition
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• v.32 no.5
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• pp.700-705
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• 2003

Oriental pear was used as treatment of asthma, control of blood pressure tonic medicine vasoactio, diabetes in oriental medicine. In this study, it was investigated that pear pectin effects on cardiovascular system as blood pressure and renin and atrial natriuretic peptide (ANP) in plasma, cardiac hypertrophy. The experiments were performed on Sprague-Dawley rats, 2K1C hypertension model was prepared by constricting the left renal artery with a sliver clip. Animals were then divided into four groups, 5 mg/kg, 10 mg/kg, 15 mg/kg and the control, pear pectin and apple pectin solutions were supplied with them. The blood pressure was more decreased in pear pectin 10 mg/kg than in apple pectin. The plasma ANP was decreased in pear pectin 10 mg/kg, and renin was increased in same concentration of drug. Cardiac hypertrophy had a tendency to decrease in pear pectin 15 mg/kg, but was not statistically significant compared to control group.

• Cartoon and Animation Studies
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• s.10
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• pp.137-148
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• 2006

The purpose of this article is to study the aspects of transformation of Treasure Island(1883), Robert Louis Stevenson's novel in two feature animations (1987) of Osamu Dezaki and (2002) of Ron Clements and John Musker by analyzing characters. In the original novel, as a typical wicked villain and traitor, Long John Silver functioned as an obstacle in Jim Hawkins' Bildungsroman. And Osamu Dezaki laid great emphasis on the friendship between Jim and Stiver His might be an excellent example of the faithful adaptation. But in Disney's , from initial mistrust, to friendly co-worker, to mentor and protege, and finally, to mutual rescuers, Jim and Silver have created a permanent bond that can never be broken - their coming together has changed both their lives forever. Jim's voyage of searching for treasure is not just for the discovery of material riches unimaginable but also for the discovery of his own true worth. Making the Sliver/Jim relationship more focused, Jim ends up discovering not just an obvious treasure; he discovers an inner treasure. From this viewpoint, this feature film could be an outstanding transformative adaptation.

• Korean Journal of Environmental Biology
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• v.34 no.3
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• pp.183-192
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• 2016

Silver nanomaterials have been intensively applied in consumer products of diverse industrial sectors because of their strong biocidal properties and reported to be hazardous to aquatic organisms once released in the environment. Nanomaterials including sliver, are known to be different in toxicity according to their physicochemical characteristics such as size, shape, length etc. However studies comparing toxicity among silver nanomaterials with different physicochemical characteristics are very limited. Here, toxicities of silver nanomaterials with different size (50, 100, 150 nm), length (10, $20{\mu}m$), shape (wire, sphere), and coating material (polyvinylpyrrolidone, citrate) using OECD test guidelines were evaluated in aquatic species (zebrafish, daphnia, algae) and compared. On a size property, the smaller of silver nanomaterials, the more toxic to tested organisms. Sphered type of silver nanomaterials was less toxic to organisms than wired type, and shorter nanowires were less toxic than longer ones. Meanwhile the toxic effects of materials coated on silver nanomaterials were slightly different in each tested species, but not statistically significant. To the best of our knowledge, it is first investigation to evaluate and compare ecotoxicity of silver nanomaterials having different physicochemical characteristics using same test species and test guidelines. This study can provide valuable information for human and environmental risk assessment of silver nanomaterials and guide material manufacturers to synthesize silver nanomaterials more safely to human and environment.

• Korean Journal of Acupuncture
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• v.28 no.2
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• pp.1-11
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• 2011

Objectives : The aim of this study was to examine the effect acupuncture by needle manipulation at acupoints, SP3 HT7, on the blood pressure and renin and atrial natriuretic peptide(ANP) in plasma, cardiac hypertrophy in hypertensive rats induced by two kidney one clip (2K1C). Materials and Methods : The experiments were performed on twenty-five Sprague Dawley rats, 2K1C hypertension model was prepared by constricting the left renal artery with a sliver clip. Animals were divided into five groups, control, AC-1a and AC-2a(acupuncture at SP3 HT7 bilaterally and the needle was twirled and rotated forward with the thumb and forefinger of the right hand 6 times), AC-3a(acupuncture at SP3 HT7 bilaterally and the needle was inserted in the opposite direction(body direction) as the channel runs), AC-4a(acupuncture at SP3 HT7 bilaterally and the needle was inserted in the opposite direction(body direction) as the channel runs and the needle was twirled and rotated forward with the forefinger of the right hand 6 times). The treatments were started on the 4 week after inducing 2K1C, and they were performed two times a week for 3 weeks in rats. Results : The results are that The blood pressure was significantly decreased at 4 times in Acu-1a, The cardiac hypertrophy was significantly decrease in Acu-2a and Acu-3a. The activity of plasma renin was decreased in all groups without control and Acu-1a, and that of plasma ANP was decrease in Acu-2a and Acu-3a than control group. Conclusions : These results suggest that acupuncture on SP3 HT7 mostly cause significant changes on controlling renal hypertension induced by 2K1C in the rats.

• Proceedings of the Korean Society for Technology of Plasticity Conference
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• 2009.05a
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• pp.310-313
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• 2009

Several high nitrogen stainless steel ingots(100kg) were fabricated with changing Ni and $[N]_2$ contents by Pressurized Vacuum Induction Melting(P_VIM). After free forging process, chemical compositions, microstructure and mechanical properties were estimated. Hardness was increased with the increase of $[N]_2$ content. Furthermore, microstructure including a lot of tempering twins was observed with optical microscope. Mechanical properties were estimated as function of solution treatment temperature and cooling method(air/water) under duration time of 1 hr on sample that were fabricated with Ni content under the atmospheric $[N]_2$ pressure. At solution treatment range of $1050{\sim}1100^{\circ}C$, hardness was decreased with the increase of solution temperature and there were little discrepancy of microstructure and hardness with cooling method. Computer simulation was carried out in order to inspect pass schedule in cold rolling process. When the condition of simulation was roll speed of 2.5mpm, rolling rate $15{\sim}17%$ per pass, it was ascertained that the formation such as deformation by sticking and lamellar sliver etc. was restricted from a simulation.

• Korean Journal of Social Welfare
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• v.58 no.3
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• pp.313-340
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• 2006

The purpose of this study was to examine predictors of move intention to silver town in Jeju Island. Participants were 449 middle age and elderly who live in Seoul, Gyungido, Inchun Metropolitan and Jeju island. Participants were completed a questionnaire and/or structured interview that included measures of socioeconomic variables, motivation to move, determinants of move selection, conditions of location, and preparation for old age. Results of descriptive analysis revealed that cognition level of sliver industry and silver town was relatively high and medical service was the best necessary field, followed by field of leisure activity, house, life and finance. Logistic regression analyses on the effects of socioeconomic variables on move intention indicated that region, occupation and house ownership had significant effects on move intention to silver town. Result of motivational effect on move intention revealed that solution of offspring's burden was the most important factor, followed by convenient life of the aged, enjoyment of freedom for the elderly life. Result on the influence of determinants of move selection indicated that medical service facilities, resort facilities and leisure, cultural service facilities had significant effect on move intention. Among conditions of location for Jeju island, mild climate, comfort environment and low-price were significant predictors on move intention. Overall, result on relative influence of individual factors indicated that low price factor was the most important predictor, followed by resort facilities, cognition on necessity of silver town, enjoyment of freedom for the elderly life, leisure cultural service facilities, and medical service facilities.

• Journal of Aquaculture
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• v.19 no.4
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• pp.267-274
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• 2006

To understand the changes in plasma levels of sex steroids in the wild Japanese eel Anguilla japonica during artificially maturing process, eels received weekly intraperitoneal injections of a water-in-oil (W/O) type emulsion with Freund`s incomplete adjuvant containing salmon pituitary extract (SPE; 20 mg pituitary powder/fish) were examined. In the weekly Eel's Ringer-treated control wild eels, the body weight (BW) changes of fish decreased slowly during the experiment period. Plasma testosterone (T), $estradiol-17{\beta}\;(E_2)$ and $17a,20{\beta}-dihydroxyprogesterone$ (DHP) levels did not change significantly at the end of the experiment. In the weekly SPE-treated silver eels, however, rapid increase in BW changes occurred after 6 to 10 weeks, and the oocytes of all fish were observed to be in the migratory nucleus stage. Furthermore, significant increase in sex steroid hormones (T and $E_2$) levels occurred from 6 weeks. In the weekly SPE-treated yellow eels, the BW changes of fish increased slowly at 6 weeks and then increased. In these fish, the oocytes were at the tertiary yolk globule stage even at the end of the experiment. Plasma sex steroid hormones profiles revealed individual variability in SPE-treated yellow eels. Plasma T and $E_2$ levels significantly increased at 8 weeks and after 6 weeks, respectively, in SPE-treated yellow eels. In the weekly SPE-treated wild eels (silver and yellow eels), however, plasma DHP levels did not change significantly during the experiment period. In silver eel, final maturation could be induced by weekly administration of SPE using W/O type emulsion.