• 한국조명전기설비학회:학술대회논문집
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• 한국조명전기설비학회 2006년도 춘계학술대회 논문집
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• pp.471-474
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• 2006

BIPV(Building Integrated PV) system can expect dual effects that reduce expenses for establishment of PV system by adding new function as outer covering material of building expect producing the electricity. But, there are many generation differences according to the exterior environmental facts(solar cell away, design and installation condition of interactive inverter system) Therefore, it is difficult to optimum design. Consequently in advance design system, we experiment 3kW BIPV(Building Integrated PV) generation. We concrete PV system efficient application of variable. BIPV system that is proposed in this paper, was established in Solar Energy research center of Chosun University, composed with system. This research is a basic study for application of building integrated photovoltaic system for builing.

• 펄프종이기술
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• 제39권3호
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• pp.77-83
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• 2007

This study was carried out to examine the optimum culture condition for the production of cellulose from Saprolegnia ferax and its physical characteristics. Conclusions obtained from the results of this study were as follows: In producing the cellulose from S. ferex, optimal pH and temperature were 7.0 and $26{\sim}30^{\circ}C$ with a maximum of $26^{\circ}C$, respectively. And, optimal culture period was 11days. WHC and OHC of biocellulose were 3.2(25.04 g/g) times and 3.5(25.75 g/g) times higher than those of commercial ${\alpha}-cellulose$(7.57, 7.25 g/g) respectively. The viscosity of biocellulose is lower than that of commercial ${\alpha}-cellulose$. And the effect of rpm on the viscosity of biocellulose was more than on the that of ${\alpha}-cellulose$.

• 대한설비공학회:학술대회논문집
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• 대한설비공학회 2006년도 하계학술발표대회 논문집
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• pp.1125-1130
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• 2006

An air source heat pump system producing the ice and water storage energy for cooling and heating of building has been proposed. Cycle design and simulation considering energy balance between heating and cooling capacity has been carried out. The roles of the capacity controlled compressor, refrigerant heating device and air preheating are investigated in detail. System control logic for meeting the predetermined heating capacity when the system is operated at cold climate condition is suggested. Some anticipated problems of the proposed system are also described.

• 한국환경교육학회지:환경교육
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• 제13권1호
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• pp.23-36
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• 2000

As the environmental industry grew bigger and bigger, the corcern about environmental condition increased and the demand of environmental expert tended to be much more increased. A lot of universities therefore established environment-related departments on campuses and ended up with producing numerous students every single year. However, some problems such as followings were in this study. First, the industry cannot adopt all the students directly from universities due to their low capabilities in environment affairs. Second, the universities yield much more students than the industry can actually adopt. In order to yield the appropriate students meeting the expectation of the industry, it is necessary to permit no more new department established on campus and to adopt new environmental field such as environmental management, eco-auditing and also 3+1 lecture system focused on real affairs.

• 한국자원식물학회:학술대회논문집
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• 한국자원식물학회 2003년도 심포지엄
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• pp.20-29
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• 2003

The aim of the present study isto assess the importance of siderophore producing rhizosphere bacteria on the growth of Brassica junceaunder chromium stress. Pseudomonassp. (A4) produced an iron chelating substance siderophores in iron deficient medium. under chromium stress condition Pseudomonassp. (A4) markedly increased the root and shoot length and also biomass of Brassica juncea as compared to Pseudomonas sp. (A3). This plant growth promotion has been related to the microbial production of siderophore.

• 한국균학회지
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• 제46권4호
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• pp.447-457
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• 2018

In this paper, the screening of potent acetylcholinesterase (AChE) inhibitor - producing yeasts from wild yeasts and the condition for the production of anti-dementia AChE inhibitors are described. Among one hundred and seven non-pathogenic wild yeast strains from the waters and soils of three main rivers in Daejeon metropolitan city and midstream of Yeongsangang river in Sangju, sporogenous Saccharomyces cerevisiae WJSL0113 and asporogenous Wickerhamomyces anomalus JSF0128 were selected as useful strains for the production of potent AChE inhibitors. The AChE inhibitors of S. cerevisiae WJSL0113 and W. anomalus JSF0128 had a maximum yield when they were incubated in yeast extract-peptone-dextrose media (pH 6.0 in S. cerevisiae WJSL0113 and pH 5.0 in W. anomalus JSF0128) for 18 hr at $30^{\circ}C$, respectively.

• 한국정보통신학회:학술대회논문집
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• 한국정보통신학회 2014년도 추계학술대회
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• pp.591-594
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• 2014

농업 분야에서의 IT 영역 융합은 네트워크를 기반으로 자동제어 기술과 실시간 정보제공을 통해 곡물의 생산성 재고 및 품질 향상 방안을 기대하게 되었다. 유비쿼터스 환경하에 농업 분야에서의 IT 융합 서비스는 기존의 농작물 생산, 유통, 소비 분야에서의 어려움을 극복하는데 많은 장점을 제공하게 되었으며 ICT와 접목하여 새로운 서비스를 창출하게 되었다. 본 논문에서는 네트워크 기반에서의 유비쿼터스 환경에서 농업을 위한 서비스 표준기술 요구조건 을 제시한다.

• Journal of Ginseng Research
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• 제46권1호
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• pp.1-10
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• 2022

Ginseng has been well-known as a medicinal plant for thousands of years. Bacterial endophytes ubiquitously colonize the inside tissues of ginseng without any disease symptoms. The identification of bacterial endophytes is conducted through either the internal transcribed spacer region combined with ribosomal sequences or metagenomics. Bacterial endophyte communities differ in their diversity and composition profile, depending on the geographical location, cultivation condition, and tissue, age, and species of ginseng. Bacterial endophytes have a significant effect on the growth of ginseng through indole-3-acetic acid (IAA) and siderophore production, phosphate solubilization, and nitrogen fixation. Moreover, bacterial endophytes can protect ginseng by acting as biocontrol agents. Interestingly, bacterial endophytes isolated from Panax species have the potential to produce ginsenosides and bioactive metabolites, which can be used in the production of food and medicine. The ability of bacterial endophytes to transform major ginsenosides into minor ginsenosides using β-glucosidase is gaining increasing attention as a promising biotechnology. Recently, metabolic engineering has accelerated the possibilities for potential applications of bacterial endophytes in producing beneficial secondary metabolites.

• 한국버섯학회지
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• 제20권1호
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• pp.1-6
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• 2022

A novel brown rot fungus Phaeolus schweinitzii IUM 5048 was firstly used for ethanol production. It was found that this fungus produced ethanol with various sugars, such as glucose, mannose, galactose and cellobiose at 0.28, 0.22, 0.06, and 0.22 g of ethanol per g of sugar consumed, respectively. This fungus showed relatively good ethanol production from xylose at 0.23 g of ethanol per g of sugar consumed. However, the ethanol conversion rate of arabinose was relatively low (at 0.08 g of ethanol per g sugar). P. schweinitzii was capable of producing ethanol directly from rice straw and corn stalks at 0.11 g and 0.13 g of ethanol per g of substrates, respectively, when the fungus was cultured in a basal medium supplemented with 20 g/L rice straw or corn stalks. These results suggest that P. schweinitzii can hydrolyze cellulose or hemicellulose to fermentable sugars and convert them to ethanol simultaneously under oxygen limited condition.

• 천문학회보
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• 제46권1호
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• pp.59.3-60
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• 2021

An investigation of flare-producing magnetic structure is important for studying an initiation of eruptive events. In this study we select two different eruptive events, M5.3 and X1.2 flares in active region (AR) 11283. Both events occur in the same AR, but brightenings of flare ribbons, seen in EUV images, are different shapes. In order to understand triggering process of eruptive flares, we reconstruct coronal magnetic fields using two observation-based models: a nonlinear force-free field (NLFFF) extrapolation model and a magnetohydodynamic (MHD) one. The NLFFFs show that sheared arcades and overlying fan-spine configurations are found in both cases, but the distributions of magnetic twist are weaker before the M5.3 flare than before the X1.2 flare. The MHD model is to explore the temporal evolution of coronal magnetic structures by considering the NLFFF with an anomalous resistivity as an initial condition. We discuss possible processes of two eruptive events using the MHD as well as the NLFFF model results.