• Electric Engineers Magazine
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• v.238 no.6
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• pp.22-25
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• 2002

건물은 인류의 역사가 시작되면서 초기에는 움막의 형태에서부터 시작하여 스스로의 생활을 유지하고 자연으로부터 생명의 위험을 보호하기 위한 수단으로서 구축되었다. 원시 농경사회 정착생활이 시작되면서 점차 생활의 규모가 커지고 건물을 건축하는데 문화와 예술적인 요소들이 반영되었으며 기술의 발달과 더불어 건물은 끊임없는 변화가 시도되어왔다.

• Environmental engineer
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• v.18 s.195
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• pp.82-83
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• 2002

우리 환경인들의 삶의 터전인 현장에는 많은 유해$\cdot$위험요인들이 상존하고 있으나 이를 간과하거나 무시하고 지나쳐버림으로써 돌이킬 수 없는 중대재해가 빈번히 발생하고 있습니다. 이에 본지는 최근 발생된 환경오염방지시설관련 재해사례를 알려드림으로써 발생가능한 재해를 사전예방하고 회원 여러분들의 소중한 생명을 보호코자 합니다.

• Environmental engineer
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• v.19 s.205
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• pp.68-69
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• 2003

우리 환경인들의 삶의 터전인 현장에는 많은 유해$\cdot$위험요인들이 상존하고 있으나 이를 간과하거나 무시하고 지나쳐버림으로써 돌이킬 수 없는 중대재해가 빈번히 발생하고 있습니다. 이에 본지는 최근 발생된 환경오염방지시설관련 재해사례를 알려드림으로써, 발생가능한 재해를 사전예방하고 회원 여러분들의 소중한 생명을 보호코자 합니다.

• Environmental engineer
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• v.19 s.206
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• pp.74-75
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• 2003

우리 환경인들의 삶의 터전인 현장에는 많은 유해$\cdot$위험요인들이 상존하고 있으나 이를 간과하거나 무시하고 지나쳐버림으로써 돌이킬 수 없는 중대재해가 빈번히 발생하고 있습니다. 이에 본지는 최근 발생된 환경오염방지시설관련 재해사례를 알려드림으로써 발생가능한 재해를 사전예방하고 회원 여러분들의 소중한 생명을 보호코자 합니다.

• Korean Journal of Food Science and Technology
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• v.53 no.2
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• pp.223-229
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• 2021

To evaluate the protective effect of Codium fragile on fine dust (PM2.5)-induced cytotoxicity, we investigated its antioxidant activity and cell protective effect on PM2.5-exposed cells. The 40% ethanolic extract of C. fragile showed the highest total phenolic content, whereas the water extract of C. fragile showed the highest total polysaccharide content. The protective effect of the extracts on PM2.5-induced oxidative damage in nasal cavity (RPMI2650), lung (A549), brain (MC-IXC), hippocampus (HT-22), and microglia (BV-2) cells was evaluated by measuring the intracellular reactive oxygen species (ROS) content and cell viability. The results showed that the 40% ethanolic extract more efficiently inhibited ROS production than the water extract. In contrast, PM2.5-exposed cells treated with the water extract showed higher viability than those treated with the 40% ethanolic extract.

• Korean Journal of Breeding Science
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• v.41 no.3
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• pp.338-341
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• 2009

"Hwaweon 1" was developed from an interspecific cross between Hwaseongbyeo and a wild species, Oryza rufipogon L. (IRGC 105491) based on marker-aided selection. The recurrent parent "Hwaseongbyeo" is a high grain quality cultivar with medium-maturity. Hwaweon 1 is nearly isogenic to Hwaseongbyeo except a small O. rufipogon introgression on chromosome 8 harboring the gene for grain weight. The preliminary and replicated yield trial was conducted at Chungnam National University in 2004, 2005 and 2006. The local adaptability test was carried out by the National Seed Management Office (NSMO) in 2007 and 2008. This cultivar was registered to NSMO with a cultivar designated as "Hwaweon 1". This cultivar averaged 89 cm in culm length and has a medium growth duration. This cultivar is resistant to stripe virus as the recurrent parent, Hwaseongbyeo. Milled rice of "Hwaweon 1" is translucent and the grain quality traits are comparable to those of the recurrent parent. The yield potential of "Hwaweon 1" in grain is about 7.43 MT/ha at the ordinary fertilizer level about 10% higher than that of Hwaseongbyeo mainly due to increase in grain weight.

• Journal of agriculture & life science
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• v.45 no.2
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• pp.69-83
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• 2011

The aim of the research was to provide basic information for a suitable management and utilization of protected trees by law. To achieve this aim, this study investigated the current state, management status and utilization of protected trees by law in Gyeongsan city. The result of the current state of protected trees indicated that there were 55 protected trees designated since 1982. These trees consisted of 8 species which were located at 41 places. Major species was Sophora japonica (30.9%), followed by Zelkova serrata (23.6%). The protected trees have been used as sacred trees (45.5%) in the villages, followed by scenic trees (36.7%). 38.2% of the protected trees were 200 to 300 years old and 54.6% of the trees were 15 to 30 m in height. 34% of the protected trees were located in the villages, followed by beside road (19.5%). Single trees (78%) were mostly planted. The result of the management status indicated that 58.5% of the root area in protected trees were covered with bare ground, followed by gravel mulch (19.5%). The average of soil hardness was 9.64 mm. The safety fence of tree was installed at 9 places (22%) and a stone wall was built at 22 places (53.7%). 70.9% of the protected trees had a surgical operation to prevent cavities and to cure decay. Granite stone signs were installed at 33 places. The result of the utilization of protected trees indicated that 13 places were used as a rest area in the villages. It consisted of shelters, benches, athletic facilities and outdoor tables. The research suggested potential places for a mini park(pocket park) to recover a local community by using surrounding available land and improving current rest areas of protected trees. The research presented here is a first step towards a more comprehensive analysis of protected trees in Gyeongsan and further research is needed.

• Food Science and Preservation
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• v.31 no.3
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• pp.452-461
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• 2024

This study evaluated the in vitro antioxidant activities of ethanolic Polygonum multiflorum (P. multiflorum) extracts and their cytoprotective effects on H₂O₂-induced HT22 and SK-N-MC cells. Among ethanolic extracts of P. multiflorum, the 40% ethanolic extract of P. multiflorum exhibited high total phenolics and flavonoid contents, with 105.68 mg of GAE/g and 28.92 mg of RE/g, respectively. The 40% ethanolic extract of P. multiflorum showed a high 2,2'-azino-bis-(3-ethylbenzothiazoline-6-sulfonic acid) diammonium salt (ABTS) radical scavenging activity and malondialdehyde (MDA) inhibitory effect. The 40% ethanolic extract of P. multiflorum also showed efficient inhibitory activity against α-glucosidase and acetylcholinesterase. Moreover, the 40% ethanolic extract of P. multiflorum reduced oxidative stress and increased cell viability in H₂O₂-induced HT22 and SK-N-MC cells as determined by 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetra-zoliumbromide (MTT) and 2',7'-dichlorodihydrofluorescein diacetate (DCF-DA) assay. High-performance liquid chromatography (HPLC) identified 2,3,5,4'-tetrahydroxystilbene-2-O-beta-D-glucoside (TSG) as the bioactive compound in the 40% ethanolic extract of P. multiflorum.

• Journal of Korea Society of Industrial Information Systems
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• v.15 no.5
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• pp.167-177
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• 2010

It is really important that trained professional care givers service pursuer for long tenn care insurance in Korea. This study was done to evaluate the infection prevention knowledge and attitude on nursing caregiver students with one group pre test-post test to compare on the education program. The data was collected by standardized self-administered questionnaire with a total of 128 nursing caregiver students in G city. The data was analyzed using the SPSS WIN 10.0 program such as t-test. The knowledge of infection prevention was significantly increased on pre-education and post-education of Infection Prevention Education Program. It is necessary for continuous education to maintain quality of nursing and improve the knowledge of infection prevention and program development on nursing caregiver.

• Microbiology and Biotechnology Letters
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• v.8 no.1
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• pp.19-25
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• 1980

Trials of investigating the effect of freezing and lyophilization, as the practical lactic starter preservation methods, on the viability and lactic acid producing activity of Lactobacillus bulgaricus NLS-4 have been carried out. After the treatments, both of viability and activity were decreased. However, when the initial cell cocentration was increared, the survival rate against freezing could be raised to 46% and the activity to 0.25% lactic acid whereas those against lyophilization were 22 ％ and 0.29% lactic acid, respectively. There were further increased maximally when the cell suspension was subjected to freezing and lyophilization after the addition of protective agents such as glycerol and the G. C. G. S. suspending medium.