• Korean journal of communication and information
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• v.71
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• pp.33-51
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• 2015

In South Korea, the community building projects and so-called 'community businesses' are recently regarded as one of the popular issues for the local people and social activists. The project seems to be a miracle resolution for various social matters such as the deteriorating welfare, health care, security system and the worsening income problem, etc. But these promising social discourses and practices which encourage to build communities are not only constructing 'good governance' for the sound cooperation between the state and civil society, but also allowing government technologies to manage and regulate civil society and citizens. This irony of building community is not yet thoroughly considered. The aim of this article is to ask 'Is building community good for all of people?'; 'How does community guarantee the freedom of people who participate in?'. The reflection for community in South Korean Society has related to The May 18-community in Gwangju. The May 18-community is a keystone for understanding the ethos and pathos of community. This study tries to unravel the relation between the May Uprising and the idea of community throughout affects and hearts of participants. The lived experience and testimony of the people of Gwangju in May, 1980, reveals that community should not be in an order and an notion of security. Examining hearts of members of 'whatever community' in the May Uprising is essential to imagine a new form of community which incorporates liberation and freedom as its base.

• Korean Journal of Organic Agriculture
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• v.25 no.1
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• pp.85-99
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• 2017

The study was compared for ability to supply macro-nutrients between time and height of mowing to establish alternate technique of a chemical fertilizer with 9-year old 'Niitaka' pear (Pyrus pyrifolia Nakai) trees in a pesticide-free orchard in 2009. Rye and hairy vetch were sown together during fall 2008. Four types of mowing time treatments were included; mowing on April 18+May 28, on April 28+June 8, on May 8+June 18, and on April 18+May 18+June 18. Mowing height treatment included mowing at $3{\pm}1cm$, $7{\pm}1cm$, and $13{\pm}1cm$ on April 18 or June 8. Mowing on May 8+June 18 increased the most dry weight of ground cover and vegetation to 14,480 kg per ha among the mowing time treatments, resulting in the greatest production of T-N (total nitrogen; 292 kg) and K (396 kg) per ha on the soil. Mowing at $7{\pm}1cm$ decreased the most dry weight of ground cover and vegetation to 11,970 kg per ha among the mowing height treatments, resulting in the lowest production of T-N (265 kg), P (111 kg) and K (333 kg) per ha in a soil. Ground cover treatments increased soil organic matter contents, regardless of mowing treatment methods.

• Journal of agriculture & life science
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• v.45 no.2
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• pp.85-92
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• 2011

The current study was conducted to investigate effects of sera taken from Hanwoo at different age on adipocyte differentiation. Sera were taken from Korean native (Hanwoo) steers at 6, 12, 18, and 24 months of age, respectively and supplemented to 3T3-L1 preadipocytes after the cells reached confluence and maintained 10 days thereafter. For the first 2 days (48 h), cells were induced to differentiate by addition of differentiation factors, methylisobutylxanthine, daxamethasone, and insulin. After the differentiation, the cells were incubated without differentiation factors except insulin. The cells lost their fibroblastic shape and showed round-up appearances after 10 days incubation with FBS and the sera of Hanwoo steers. Big lipid droplets appeared in the cells cultured with FBS and the sera taken from Hanwoo at 18 and 24 months of age. After 18 months of age, GPDH activity was statistically higher than 6 and/or 12 months of age (P < 0.05). Based on morphology and Sn-glycerol-3-phosphate dehydrogenase activities, Hanwoo steers expressed aged-dependent adipogenic activities, indicating that aged sera may result in high adipocyte differentiation. It is concluded that the 18 months of age may be 'threshold' to express major adipogenic activities. This may strongly support previous field studies reporting considerable increase in fat contents of Hanwoo carcass at over 18 months of age.

• KOREAN JOURNAL OF CROP SCIENCE
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• v.37 no.4
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• pp.372-376
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• 1992

This experiment was conducted to determine hay making time on the drying period, hay moisture content, hay loss content, yield and forage quality of Italian ryegrass in paddy field. Plant height increased rapidly from middle of April, and leaf weight rate were 55.6% at April 20 and 18.9% at May 30. Moisture content and loss content of hay were 17.1-20.5% and 10.2-15.0%, respectively, at drying for 4 days from May 10 to May 30. As the growth stage later, crude protein, fat and ash contents reduced, but crude fiber and NFE contents increased. Dry matter and TDN yield at the cutting of May 20 and May 30 increased to 17-18% and 5-11%, respectively, than those of April 20＋May 30.

• Journal of Korean Library and Information Science Society
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• v.48 no.2
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• pp.373-403
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• 2017

The purpose of this study is to establish the classification principle of archives for the May 18th democratic uprising in terms of preservation and utilization of it and to develop an integrated classification system for it. For this purpose, it was carried out by the previous research on the classification of records and institutional case analysis. Also, we developed an integrated provenance-based classification system based on the practical analysis on the data held in 3 representative institutions in Gwangju. This classification system was proposed by facets of 'provenance-material-period-media-subject' type. We also proposed the collection-based integrated classification system that reflects on the expansion of archivists' role and the trend of times.

• Korean Architects
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• s.643
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• pp.98-103
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• 2022

• Korean Journal of Agricultural Science
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• v.46 no.3
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• pp.629-636
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• 2019

This study was conducted to investigate the growth characteristics and yield of whole green rice grains during the ripening period. These were investigated using Hopumbyeo and Unkwangbyeo at two transplanting times and with two kinds of nitrogen fertilization. The transplanting times were May 30 and June 20, respectively, using 30-day seedling culture and transplanting conducted with 3 - 4 plants per hill in planting space of $15cm{\times}30cm$. During nitrogen fertilization, 9 kg and 18 kg was used, respectively. The harvest of the green whole rice grains was carried out on the 15th, 20th, 25th, 30th, and 40th day after the heading date. The clum length was greater with later planting and with application of more nitrogen. The rice yield was higher with nitrogen fertilization of 18 kg/10 a when transplanted on May 30 for Hupumbyeo, and for Unkwangbyeo, was higher at 9 kg/10 a nitrogen fertilization when transplanted on May 30. The protein content of Hopumbyeo was higher when the nitrogen fertilizer was 18 kg/10 a, and that of Unkwangbyeo was lower than that when transplanting on June 20. The greenness was not related to the nitrogen fertilization level when transplanted on May 20 but for later transplanting, the greenness was higher when the nitrogen application was increased, and the greenness was the greatest about 30 days after the heading date.

• Sleep Medicine and Psychophysiology
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• v.18 no.2
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• pp.72-75
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• 2011

Sleep disorders such as insomnia, obstructive sleep apnea (OSA), and restless legs syndrome (RLS) are very common disorders and may cause significant burden in terms of individual as well as societal aspects. Sleep insufficiency from such sleep disorders may cause deleterious effects on daily work life and may be associated with other major medical or psychiatric disorders including cardiovascular disease, diabetes mellitus, depression, and anxiety disorder. Various motor or occupational accident may result from the sleep problems. In addition, recent researches provide the method to evaluate the lost productivity time in terms of absenteeism and presenteeism. Moreover, several studies on cost-effectiveness of treatment of sleep disorders show that it is cost-effective.

• Journal of The Korean Society of Grassland and Forage Science
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• v.15 no.2
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• pp.140-145
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• 1995

This experiment was canied out to investigate the effect of seeding times on the fresh yield of fodder beet varieties, and to select the most adaptable varieties of fodder beet in Daekwanryeong areas. Three varieties(Kyros, Zorba and Hugin) and six seeding times(25 July, 4 Aug. and 14 Aug. in 1993. and 30 Apr., 10 May and 20 May in 1994) were combined in the experiment. The results obtained were as follows: 1. The seeding time for the highest fresh yield of fodder beet was obtained as 18.29 tonha on 25 July in 1993. Of various varieties, the highest fresh yields were 22.59 ton and 18.89 tonlha for Kyros and Zorba on 25 July, and 19.15 tonha for Hugin on 4 Aug. in 1993. 2. The fresh yield of fodder beet were 20.30 ton, 19.41 ton and 16.93 tonlha on 30 Apr., 10 May and 20 May in 1994, respectively. The highest fresh yield of the varieties were 77.78 ton for Kyms on 20 May, 19.79 ton for Zorba on 30 Apr., and 20.63 tonha for Hugin on 10 May in 1994. 3. Shoot and root(S/R) ratio was different between seedling times. S/R ratio of the varieties were increased in 1993 due to the delayed seeding times, but on the contrary it tended to decrease in 1994 with the delayed seeding times. 4. Shoot and root(S/R) ratios of varieties were 0.94, 0.89 and 1.18 for Kyros, Zorba and Hugin in 1993, and 1.29 for Kyms, and 1.85 for Zorba and Hugin in 1994, respectively.

• BMB Reports
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• v.41 no.6
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• pp.461-465
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• 2008

IL-18 production may enhance immune system defense against KG-1 cells ; NB4 cells, which are associated with good prognosis, do not produce IL-18. In this study, we treated KG-1 cells with IL-18 and used microarray technology to assess subsequent effects on gene expression. In UniGene-array of 7488 human genes, expression of 57 genes, including stress related genes, increased at least 2-fold, whereas expression of 48 genes decreased at least 2-fold. Following exogenous exposure of KG-1 cells to IL-18, expression of CRYGC, $NF{\kappa}BIA$ and NACA gene were monitored. The latter is a transcriptional coactivator potentiating c-Jun-mediated transcription.$NF{\kappa}BIA$ is an inhibitor of $NF{\kappa}B$, and affects growth regulation, apoptosis and hypoxic stress. Studies, such as this one, are beginning to clarify the differences between cells associated with good and bad cancer prognoses, which may ultimately assist in medical treatment for acute myeloid leukemia.