• Journal of Technology Innovation
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• v.18 no.2
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• pp.121-145
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• 2010

This study relates to measure impact of green technology on industry sector by uses of industry greening indices. For this study, we performed patent trend analysis, technology-industry concordance analysis, and designed some industry greening indices. Through the results of this research, we found out the impact of Korean high priority green technologies on respective industries, and consequently identified which industries play an important role in the era of green innovation. IT related industries would catch somewhat weak attention in green technology policy, though they manufacture and use plenty of patents at present. Meanwhile, Energy related industry, such as battery industry would catch strong attention in green innovation, showed very high value of industry greening indices. In order to design proper R&D strategy for green technologies, understanding industry and market structure that can adapt and promote green technology innovation is important. In this context, this study could be an effective and systematic tool for assisting green innovation policy. Also, these indices developed are not limited to the case of green technology, other technologies can be used universally as a input for analysis.

• KOREAN JOURNAL OF CROP SCIENCE
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• v.68 no.2
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• pp.81-89
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• 2023

Lime-treated fertilizer (LTF) is manufactured using the lime stabilization method with food waste. LTF is effective in neutralizing acidic soil, improving nutrient and organic matter content in soil, and increasing crop productivity. However, excessive use of LTF in agricultural land can have undesirable effects, such as reduced crop growth and nutrient accumulation in soil. This study was evaluated the effect of different application ratios of LTF on the crop yield index (%), nutrient (N, P₂O₅, K₂O) uptake index (%), and soil chemical properties. The following treatments were applied: untreated (UT), NPK (NPK), NPK+calcium hydroxide (CH), and NPK+1-, 2-, 4-, and 8-times of LTF (LTF1, 2, 4, and 8). The yield index for LTF1 was the highest among different LTF treatments. Moreover the yield index for spring and winter cabbage in LTF1 treatment was 10% and 21% higher, respectively, than that in NPK treatment. The yield and nutrient indices were decreased with the increase in LTF application ratio. The soil pH and EC tended to increase with the increase in LTF ratio, and were the highest at 8.2 and 2.1, respectively, after cultivation for LTF8 (P<0.05). With the increase in soil pH, the soil inorganic nitrogen (NH₄-N, NH₃-N) and available phosphate (Av. P₂O₅) levels were decreased (P<0.05). Our results suggest that LTF1 (643 kg 10a^-1) is an appropriate ratio for improving soil chemical properties and increasing crop yield.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.15 no.5
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• pp.3312-3318
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• 2014

For the sunscreen development from natural resources, a possible usage of microalgal extracts or mycosporine-like amino acids (MAAs) was investigated. Sunscreens containing 7% of microalgal extracts or MAAs derived from microalgae, Chlamydomonas hedleyi, were prepared and they were applied to human research. Through this clinical research, the values of Sun Protection Factors, Sun Protector Factor (SPF) and Protection Factor of UVA (PFA), of sunscreen containing microalgal extracts or MAAs were determined: SPF values of microalgal extracts and MAAs indicated 9.07 and 9.42, respectively, while PFA ones did 2.43 and 2.41. Due to more than 2 of PFA value in both sunscreens, they can be classified into [PA+]. Taken together, although sunscreen containing microalgae-derived extracts or MAAs does not effectively protect UV irradiation, its capacity can be satisfied if inorganic UV-protecting compounds are added.

• Journal of the Korean Society of Food Science and Nutrition
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• v.29 no.3
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• pp.460-465
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• 2000

본 연구는 여성 갱년기장애에 대한 홍삼의 효과를 조사할 목적으로 수행하였다. 홍삼의 효과는 자연적으로 갱년기 장애가 유도되었다고 생각되는 자성 노령흰쥐를 사용하여 홍삼 조사포닌 분획을 투여(20mg/kg,b.w./day) 한 후 그 효괴를 조사하였다. 홍삼조사포닌 분획은 노령쥐의 체지방 축적으로 야기되는 체중 증가를 다소 감소시키는 것으로 관찰되었다. (p<0.01). 노령쥐는 젊은 쥐에 비해 혈중 당, 총콜레스테롤, BUN 함량이 증가하였는데 조사포닌 분획의 투여는 혈당, 총콜레스테롤 함량 및 BUN 함량증기를 유의하게 억제하는 것으로 나타났다. (p<0.05, p<0.01). 노령쥐는 노령화에 따른 간기능의 저하로 GOT 및 GPT 활성이 증가하였으나 사포닌의 투여는 GOT 및 GPT 활성증가를 억제하여 간기능을 젊은 쥐의 수준으로 회복시킴을 알 수 있었다. (p<0.01). 노령쥐의 대퇴골은 사포닌투여와 관계없이 현저한 무게차이가 관찰되자 않았으나 대퇴골중 무기이온 Na+ 함량은 사포닌 투여시 약 2배 증가하는 것으로 나타났다. 이러한 사실로부터 홍삼 조사포닌 분획은 노령쥐의 혈당, 총콜레스테롤, BUN 함량증가를 억제하는 효과를 나타내며 또한 노령화에 따른 간기능 관련 생화학 지수를 개선하는 것으로 사료된다.

• Proceedings of the Korea Contents Association Conference
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• 2011.05a
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• pp.297-298
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• 2011

아토피 피부염(atopic dermatitis, AD)은 염증과 소양감을 동반하는 재발성 만성적인 피부질환으로서 심각성이 나날이 커지고 있는 대표적 건강문제이다. 본 연구의 목적은 아토피 피부염을 겪고 있는 대상자를 위하여, 한국전통 식품과 무 유선 인터넷 기반의 맞춤형 영양 관리 시스템을 개발하는 것이다. 신체계측 및 모발 무기질 수치를 입력하면 체질량지수(BMI) 및 내분비, 탄수화물 내응성 등 대사 관련 기능을 판정 받은 후, 이 평가를 기반으로 체내 기능 개선에 적합한 한국 전통 위주의 식품을 추천하며, 동시에 관련 정보, 식품 성분, 요리법 등을 제공하여 대상자 스스로 아토피를 관리할 수 있는 능력을 갖도록 하는 것이다. 결론적으로 본 연구를 통하여 개발된 시스템을 통하여 모바일 사용자들은 장소와 시간의 제약을 받지 않고 어디서나 효과적으로 한국 전통식품 토대의 아토피 피부염 개선을 위한 맞춤형 영양관리를 받을 수 있도록 하였다.

• Elastomers and Composites
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• v.37 no.3
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• pp.159-169
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• 2002

The improvement of flame retardancy of the foams based on NBR/GTR compounds was conducted by formulating various materials i.e. NBR, GTR, inorganic and phosphorus containing flame retardants, foaming agent, cross-linking agent and activator. The foaming properties, morphology, smoke density and flame retardancy of the specimens were investigated using SEM, LOI tester, smoke density control system and cone calorimeter. The phosphorus containing flame retardant reduces heat release rate, increases the limiting oxygen index and a char formation. The inorganic flame retardant increases the limiting oxygen index and reduces heat release rate with an increased CO yield by char formation, and smoke suppressing effect. The formed char seemed to intercept the oxygen transport and heat transfer into the core area. When the composition ratios of the compounds of NBR/GTR were $100{\sim}80/0{\sim}20 wt.%$, and the ratios of the rubbers/flame retardants were $1/1.55{\sim}3.60 wt.%$, we could developed foams with low heat release rate, high limiting oxygen index($28.0{\sim}39.3$), closed or semi-closed cell of uniformity and reasonable expandability($225{\sim}250 %$).

• Journal of the Korean Society for Marine Environment & Energy
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• v.16 no.2
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• pp.102-114
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• 2013

The basin of Lake Shihwa is one of highly industrialized region of Korea and a current environmental issue of study area is the operation of tidal power plant (TPP) to improve water quality. The application of water quality index (WQI) which integrates five physiochemical parameters (transparency, DO, DIN, DIP and chlorophyll-a) of water quality in Lake Shihwa and outer sea during 2011~2012 were performed not only to evaluate the spatial and temporal distribution of the water quality but also to assess the effect of water quality improvement by the operation of tidal power plant. The higher WQI values were observed in monitored sites near the industrial complexes in Lake Shihwa and the outfall of wastewater treatment plants (WWTPs) in outer sea. This indicates that the quality of seawater is influenced by diffuse non-point sources from industrial, municipal and agricultural areas in Lake Shihwa and by point sources from the effluence of municipal and industrial wastewater throughout WWTPs in outer sea. Mean WQI value decreased from 53.0 in 2011 to 42.8 in 2012 of Lake Shihwa. Water quality has improved significantly after TPP operation because enhancement of seawater exchange between Lake Shihwa and outer sea leads to improve a hypoxic condition which is primarily a problem in Lake Shihwa. Mean WQI of outer sea showed similar values between 2011 and 2012. However, the results of hierarchical cluster analysis and the deterioration of water quality in summer season indicate that the operation of tidal power plant was not improved the water quality in the upper most area of Lake Shihwa. To successfully improve overall water quality of Lake Shihwa, it is urgently necessary to manage and reduce of non-point pollution sources of the basin of Lake Shihwa.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.20 no.2
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• pp.321-328
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• 2019

A military shelter for communication and information is necessary to optimize the integrated combat ability of weapon systems in the network centric warfare. Therefore, the military shelter is required for EMI shielding performance. This study examines the stable measurement points for EMI shielding effectiveness of a military shelter for communication and information. The measurement points were found by analyzing the EMI shielding effectiveness measurement data with data mining technique and process capability analysis. First, a support vector machine was used to separate the measurement point that has stable EMI shielding effectiveness according to set condition. Second, this process was conducted with process capability analysis. Finally, the results of data mining technique were compared with those of process capability analysis. As a result, 24 measurement points with stable EMI shielding effectiveness were found.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.22 no.4
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• pp.338-344
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• 2021

Elements that threaten domestic security, such as diplomatic changes in the four major powers surrounding the Korean Peninsula and restrictions on supply and demand of parts due to COVID-19, are constantly increasing. The importance of localizing weapon systems has grown to respond proactively to the threat. As localization is not conducted evenly by the field, it is necessary to change the criteria for selecting localization targets. Establishing standards for selecting targets is difficult due to a lack of research to identify targets. This paper emphasized that the smooth supply of parts from overseas should be examined to identify targets for localization. If suppliers are not distributed evenly in the market, there is a risk of potential supply problems. CRk and HHI, representing the market structure, were proposed as indicators for evaluating the degree of smoothness quantitatively. Among them, CRk is used in Korea to check the market concentration, but there is a limit in the subjectivity of the evaluator, so it cannot be applied without a separate study on the market structure. Therefore, HHI should be applied.

• Proceedings of the Korean Society of Postharvest Science and Technology of Agricultural Products Conference
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• 2003.10a
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• pp.170.1-170
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• 2003

최근 경제성장과 더불어 쌀 소비 형태가 양보다 질을 우선하게 됨에 따라 다양한 지역 브랜드 쌀, 고품질 친환경 쌀, 씻지 않는 쌀, 버섯쌀과 강화미와 같은 기능성 쌀 등을 생산하여 차별화를 죄하고 있다. 이처럼 최고의 쌀을 소비자에게 공급하기 위하여 쌀의 다양한 상품화가 필요하다. 따라서 동의보감, 본초강목, 중약대사전 등에서 중풍, 경기, 가슴답답할 때 효과가 있다고 알려진 대나무를 가열할 때 나오는 진액인 죽력을 이용하여 기능성 쌀을 제조하였다. 대나무 추출방법에 따른 추출물 $\ulcorner$죽력$\lrcorner$ 은 가용성 고형분과 총 페놀 함량은 에탄을 추출물이 가장 높았고 증발잔사는 직접가열에 의한 추출물이 가장 많았다. 추출물을 코팅한 쌀의 취반후 관능은 에탄을 추출물을 코팅한 처리가 향과 맛이 가장 우수하였고 조직감은 추출방법 간에 차이가 없었다. 대나무 에탄을 추출물의 코팅 량별 쌀의 색도 L, a, b값은 코팅 농도가 증가될수록 증가되었으나 취반후 밥은 L값만 감소되었다. 취반 후 밥의 관능은 10% 코팅 처리에서 향과 맛이 가장 양호하였다. 죽력을 코팅한 쌀의 무기성분은 무코팅 쌀 보다 모든 성분함량이 높았는데 특히 K 함량이 월등하였다. 죽력 코팅 쌀의 취반 특성은 무코팅 쌀 보다 흡수율은 낮았고 팽창율은 떨어졌으나 토요 식미지수는 높았다. 코팅 쌀의 취반 후 물성은 경도, 검성, 씹힘성은 무코팅 쌀 보다 높았고 응집성, 탄력성, 부착성은 낮은 경향이었다.