• Journal of Microbiology and Biotechnology
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• v.30 no.6
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• pp.878-884
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• 2020

Penicillium digitatum and P. italicum are the two important postharvest pathogens in citrus, causing about 90% of the total loss of citrus fruit during storage and transportation. Natural fungicides such as essential oils have been widely used instead of chemical fungicides for preventing and controlling postharvest diseases. In this research, p-anisaldehyde exhibited a strong inhibitory effect on P. digitatum and P. italicum, with the minimum inhibitory concentration and minimum fungicidal concentration values of both being 2.00 μl/ml. Additionally, p-anisaldehyde visibly inhibited both the green mold and blue mold development of citrus fruits inoculated with P. digitatum and P. italicum. The mycelia morphologies of these pathogens were greatly altered, and the membrane permeability and cell wall integrity of mycelia were severely disrupted under p-anisaldehyde treatment. These results suggest that the antifungal activity of p-anisaldehyde against P. digitatum and P. italicum can be attributed to the disruption of the cell wall integrity.

• Journal of Biosystems Engineering
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• v.28 no.2
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• pp.117-126
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• 2003

This study was conducted to develop precision control system fur cold storage facility that could offer safe storage environment for green grocery. For that reason of neuro-fuzzy control system with learning ability algorithm and single chip neuro-fuzzy micro controller was developed for cold storage facility. Dynamic characteristics and hunting of neuro-fuzzy control system were far superior to on-off and fuzzy control system. Dynamic characteristics of temperature were faster than on-off control system by 1,555 seconds(123% faster) and fuzzy control system by 460 seconds(36.4% faster). When system was arrived at steady state. hunting was ${\pm}$0.5$^{\circ}C$ in on-off control system, ${\pm}$0.4$^{\circ}C$ in fuzzy control system, and ${\pm}$0.3$^{\circ}C$ in neuro-fuzzy control system. Hunting of humidity and wind velocity was also controlled precisely by 70 to 72.5% and 1m/s For storage experiment with onion, characteristics of neuro-fuzzy control system were tested. Dynamic characteristics of neuro-fuzzy control system made cold storage facility conducted precooling ability and minimized hunting.

• Korean System Dynamics Review
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• v.10 no.2
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• pp.53-79
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• 2009

The main purpose of this study is to find what steps are needed for a system for CO2 emissions trading to be formulated as government policy, using System Thinking approach. First, this paper analyzed Korean newspapers to consider the social issue regarding CO2 emissions trading. There were more articles related to international issues than domestic ones before 2008. This trend, however, became reversed from January 2008, which means that consideration of CO2 emissions trading has been discussed as a domestic social issue from 2008. Second, it analyzed speeches by former president Roh Moo-Hyun and current president Lee Myung-bak. In particularly, President Lee Myung-bak declared "Low Carbon and Green Growth" as a new growth engine and a Korea's vision of the future national development. Third, it examined which government agencies, including departments and committees, are pursuing policies regarding climate change, global warming, and CO2 emissions trading. Most policy has originated in the Ministry of Environment, although policy alternatives have been proposed in other agencies including the Ministry of Knowledge Economy. The study concludes that the political consideration has played a major role in the policy agenda-setting process of the CO2 emissions trading in Korea.

• Journal of Environmental Impact Assessment
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• v.21 no.5
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• pp.683-693
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• 2012

The urban waterfront well created, could provide mental stability and comfort and also foster personality. In addition it could provide the calmness and rest of mind. Especially, recently the urban waterfronts are restored here and there and are created whenever developing a new town The purpose of this study is to develop a method of calculating the weight of each evaluation criterion for deciding the priority of restoration among for deciding the priority of restoration among the urban waterfronts. The method includes the analytic hierarchy process that can calculate the reasonable weight of each evaluation criterion, because the importance (weights) of evaluation criteria appears to be different among the evaluators; the results of this study can be summarized as that this method can be useful for calculating the weights of evaluation criteria, and also that the superiority of ecological resources is the most important factor (highest weight) in selecting the best waterfront, followed by accessibility, tourism vacation, and proximity to parks. And then the lowest factor in importance is the scale of reservoir.

• Korean Journal of Human Ecology
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• v.22 no.6
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• pp.649-658
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• 2013

Various paper ornaments appear in Gut, the rite of shaman in Jeju, and these are frequently called Gime, Gimekijeon or Gimejeonji. Gime are slips of white or colored paper, made to resemble the shape of god and used in the ritual shaman dances of Jeju. These Gime are hung around an altar, fastened to the end of a green bamboo pole, or held in the shaman's hands when they dance. The purpose of the study is to develop textile design based on the formative features of Gime, as a way of using Myth of shaman in Jeju. This study is used Gime made by 'Kim Yoon-Su' Simbang (shaman) who plays a role of Intangible Cultural Assets of The 71th 'Jeju Chilmeoridang Yeongdeunggut'. As a result, it was to develop the Komusaljang pattern, Seongjukkot pattern, Jijeon pattern, Jowoangki pattern and Cheoljjukdae pattern design of Jeju image using Gime that is one of the unique, indigenous pattern of Jeju.

• Journal of Microbiology and Biotechnology
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• v.13 no.1
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• pp.90-98
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• 2003

In vivo $^31p$ Nuclear Magnetic Resonance ($^31p$NMR) and metabolic studies were carried out on an acetic acid tolerant mutant, Zymomonas mobilis $ZM4/Ac^R$, and compared to those of the parent strain, Z. mobilis ZM4, to evaluate possible mechanisms of acetic acid resistance. This investigation was initiated to determine whether or not the mutant strain might be used as a suitable recombinant host far ethanol production from lignocellulose hydrolysates containing various inhibitory compounds. $ZM4/Ac^R$ showed multiple resistance to other lignocellulosic toxic compounds such as syringaldehyde, furfural, hydroxymethyl furfural, vanillin, and vanillic acid. The mutant strain was resistant to higher concentrations of ethanol or lower pH in the presence of sodium acetate, compared to ZM4 which showed more additive inhibition. in vivo $^31p$ NMR studies revealed that intracellular acidification and de-energization were two mechanisms by which acetic acid exerted its inhibitory effect. For $ZM4/Ac^R$, the internal pH and the energy status were less affected by sodium acetate compared to the parent strain. This resistance to pH change and de-energization caused by acetic acid is a possible explanation for the development of resistance by this strain.

• Applied Biological Chemistry
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• v.39 no.1
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• pp.20-24
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• 1996

Pseudomonas fluorescens ps88 was isolated from the rhizosphere soil produced the secondary metabolite called siderophore under iron Limited conditions. On iron limiting KMB medium this strain inhibited the growth of Pythium ultimum, Pyricularia oryzae, Rhizoctonia solani and Xanthomonas oryzae. Cucumber seeds were coated with the strain ps88 and were grown in green house soil. Forty days after the seed emergence, disease incidence caused by Fusarium oxysporium was reduced up to 50%. When the cucumber plants were grown in vermiculite, a significant fresh weight was increased. Root development of red pepper plants was also enhanced on MS medium supplemented with siderophore.

• Journal of KIISE:Software and Applications
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• v.36 no.5
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• pp.376-385
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• 2009

Increasing the importance of Green IT brings low-power consumption requirements for embedded software into relief. This paper focus on the power analysis techniques of embedded software along with the trend. We survey the existing research on the power analysis techniques performed during the last decade, and find out some features or characteristics from the analysis approaches of those techniques. Also we summarize those characteristics into a systematic model, and then apply the model to embedded software development process using spider diagram. Our suggestion gives such benefits as improving the understanding of power analysis techniques, guiding the choice of an appropriate technique to their Power analysis, and forecasting the direction of technology changes in embedded software power analysis.

• Proceedings of the KAIS Fall Conference
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• 2010.11b
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• pp.740-743
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• 2010

미량의 바나듐을 함유하고 있는 제주도 지하수를 나노여과(nanofiltration) 공정을 이용하여 바나듐을 고농도로 농축하고, 그 농축수를 이용하여 기능성 녹차를 제조하였다. 원수와 4단, 6단 농축한 물의 바나듐 함량은 각각 10.4, 21.6 및 31.7ppb 이었다. 이 농축수들을 이용하여 녹차 제조를 한 결과 바나듐과 카테킨 함량이 감소함을 알 수 있었다. 녹차 추출 전후의 바나듐 함량 감소율은 여름녹차의 경우에는 36.3% - 40.8%, 가을녹차의 경우에는 22.4% - 41.4%이었다. 이는 녹차잎을 이용하여 녹차를 제조하는 과정에서 바나듐 성분이 녹찻잎으로 흡착된 것으로 보이며, 녹차의 카테킨 성분은 이온함량이 높은 물에서는 잘 용출되지 않는다는 것을 확인할 수 있었다.

• Bulletin of the Korea Photovoltaic Society
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• v.6 no.1
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• pp.8-20
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• 2020

Nepal has huge potential of hydro and other renewable energy resources including solar energy. However, only 70% of the total population have access to electricity despite the long history of hydropower development in the country. Still more than 37% population in rural areas and around 73% population in Karnali Province, one of the least developed provinces, are living without access to electricity despite taking several initiatives and implementing various policies by government supporting electrification in off-grid rural areas. Government together with donors and private sector has extensively been promoting the off-grid solar photovoltaic (PV) echnology in un-electrified areas to increase electricity access. So far, more than 900,000 households in rural areas of Nepal are getting electricity from stand-alone solar PV systems. However, there are many challenges including financial, technical, institutional, and governance barriers in Nepal. This study based on extensive review of literatures and author's own long working experiences in renewable energy sector in Nepal, shares the best practices and lessons of off-grid solar PV for increasing access to electricity in rural areas of Nepal. This study suggests that flexible financial instruments, financial innovations, bundling of PV systems for concentrating energy loads, adopting standards process, local capacity building, and combination of technology, financing and institutional aspects are a key for enhancing effectiveness of solar PV technology in rural areas of Nepal.