• Molecules and Cells
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• 제38권4호
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• pp.318-326
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• 2015

We previously reported that the SbROMT3syn recombinant protein catalyzes the production of the methylated resveratrol derivatives pinostilbene and pterostilbene by methylating substrate resveratrol in recombinant E. coli. To further study the production of stilbene compounds in E. coli by the expression of enzymes involved in stilbene biosynthesis, we isolated three stilbene synthase (STS) genes from rhubarb, peanut, and grape as well as two resveratrol O-methyltransferase (ROMT) genes from grape and sorghum. The ability of RpSTS to produce resveratrol in recombinant E. coli was compared with other AhSTS and VrSTS genes. Out of three STS, only AhSTS was able to produce resveratrol from p-coumaric acid. Thus, to improve the solubility of RpSTS, VrROMT, and SbROMT3 in E. coli, we synthesized the RpSTS, VrROMT and SbROMT3 genes following codon-optimization and expressed one or both genes together with the cinnamate/4-coumarate:coenzyme A ligase (CCL) gene from Streptomyces coelicolor. Our HPLC and LC-MS analyses showed that recombinant E. coli expressing both ScCCL and RpSTSsyn led to the production of resveratrol when p-coumaric acid was used as the precursor. In addition, incorporation of SbROMT3syn in recombinant E. coli cells produced resveratrol and its mono-methylated derivative, pinostilbene, as the major products from p-coumaric acid. However, very small amounts of pterostilbene were only detectable in the recombinant E. coli cells expressing the ScCCL, RpSTSsyn and SbROMT3syn genes. These results suggest that RpSTSsyn exhibits an enhanced enzyme activity to produce resveratrol and SbROMT3syn catalyzes the methylation of resveratrol to produce pinostilbene in E. coli cells.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2022년도 가을 학술논문 발표대회
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• pp.45-46
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• 2022

Recently, it is necessary to establish an eco-friendly construction system through recycling of waste material management at construction sites. This is required to reflect the times that require a carbon reduction system in construction as part of domestic and overseas carbon dioxide reduction. Therefore, we intend to establish eco-friendly construction management as part of resource recycling and carbon reduction through recycling technology for waste fibers generated at construction sites.

• 복식문화연구
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• 제19권1호
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• pp.119-127
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• 2011

This purpose of this study was to analyze the formation and look into design characteristics by types and method of expression on multifunctional eco-friendly fashion design. Total 191 pieces of multifunctional fashion design photographs were collected through fashion collection from 2000 S/S to S/S 2010 F/W on the website. First, the characteristics of multifunctional eco-friendly fashion design used squared silhouette, achromatic colors, plain patterns for pollution control, hard materials to prolong the product, it was clear that details were minimized to save resources. Second, there were 5 changeable types of multifunctional eco-friendly fashion design which were changes in changing forms, material changes, item changes, detail changes and complex changes. Third, as the result of changeable types by method of expression, the changing forms were expressed by removable, material changes by reversible, detail changes by open and close and item changes by shifting. Forth, the formative properties of multifunctional eco-friendly fashion design had flexibility, multifunction, versatility and amusing. Therefore, this study will be helpful in planning multifunctional eco-friendly fashion design according to the kind of formative characteristics, changeable types, method of expression and provide concrete fundamental materials for the expert in clothing on the base of objective data through statistical analysis.

• 한국재난정보학회 논문집
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• 제19권4호
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• pp.747-756
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• 2023

연구목적: 본 연구에서는 기존 주입공법의 문제점을 개선하기 위한 친환경적인 주입재를 개발하고 시험을 통해 현장 적용성을 확인하기 위한 연구를 수행하였다. 연구방법: 친환경 주입재와 기존 주입재(L.W, S.G.R)의 호모겔 공시체를 각각 제작하고, 실내시험(일축압축강도, 투수계수, 수축성, 내화학성, 용출성, 어독성, 폐기물공정)을 실시하여 물리화학적 및 공학적 특성을 비교·검토하였다. 연구결과: 실내시험 결과 친환경 주입재가 기존 주입재에 비해 모든면에서 우수하였으며 주입재료로서 실제 현장에서 시공적합성을 실험하고 지반개량 효과를 확인할 수 있었다. 결론: 본 연구에서 사용된 주입재는 강도증가 및 투수성 감소 등의 기본적인 물성을 만족하면서 친환경적인 특성을 가지고 있어 지반의 조건과 적용에 관계없이 범용적으로 사용이 가능한 재료로 판단되었다.

• Journal of Microbiology and Biotechnology
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• 제27권6호
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• pp.1112-1119
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• 2017

The aim of this study was to develop a potential process for bioethanol production from Hydrodictyon reticulatum (HR), a filamentous freshwater alga, using Saccharomyces cerevisiae (KCTC7017). From the sugar solutions prepared by the four different hydrolysis methods, bioethanol production ranged from 11.0 g/100 g dried material (acid hydrolysis) to 22.3 g/100 g dried material (enzymatic hydrolysis, EH). Bioethanol was fermented from a highly concentrated sugar solution obtained by a decompression-mediated (vacuum) enrichment method (VE). As the results, ethanol was more efficiently produced from HR when sugar solutions were concentrated by VE following EH (EH/VE). Using multiple feeding of the sugar solution prepared by EH/VE from HR, ethanol reached up to a concentration of 54.3 g/l, corresponding to 24.9 g/100 g dried material, which attained the economic level of product concentration (approximately 5%). The results indicate that by using HR, it is feasible to establish a bioethanol production process, which is effective for using microalgae as the raw material for ethanol production.

• 한국실내디자인학회논문집
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• 제21권1호
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• pp.220-227
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• 2012

After The Ramsar Convention took place in Korea in 2008, public interest in environment heightened, and the government has been allocating its budget for conserving our environment. Therefore, the present study focuses on eco-friendly spatial images particularly shown in ecological museums in Korea which recognizes the value of the environment and the ecology and tries to both protect them and alert people about it. The purpose of this study is proving what consist of eco-friendly spatial images by analyzing the expressive word of eco-friendly images and the image of space, providing a basic data for future space planning of ecological museums. To do this, the present study proceeds in three steps. First of all, the base of research in analyzing stage is firmly established by grasping general theories and terms regarding spatial image. As a second step, the composition and the characteristics of exhibition is clarified through on-spot investigation to provide comparative data for spatial image assessment in the future. Also through this step, we could understand how the exhibits are designed currently. In the last stage of research, expressive words regarding eco-friendly spatial images are extracted and used to analyze the spatial image of ecological museums. And the following three conclusions is deduced. First, the expressive words of eco-friendly spatial image that are extracted are as following: "healthy", "coexisting", "clean", "blending", "warm", "soft", "lively", "pure", "cool", "fresh ", "comfortable", "relaxed", "mild", "free", "harmonious", and "healing". As the second conclusion, color, and material, the formation which is an architectural factor did not have a great impact on forming eco-friendly image, but the color and the material did. The third conclusion was that the display with natural aspects actively utilized increased eco-friendly spatial image.

• 한국콘텐츠학회논문지
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• 제11권10호
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• pp.209-216
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• 2011

본 논문에서는 실내디자인의 친환경 소재로 응용할 수 있는 한지, 옻, 숯을 이용하여 전자파 차폐 물질을 제안하였고 이를 통해 실내 공간의 전자파 차폐 및 심미성 증대를 위한 이미지월 디자인의 예를 제시하였다. 제안된 전자파 차폐 물질은 한지 위에 옻과 숯을 도포하여 두께 2.0 mm의 시료로 제작되었고, 직류 전원에서 2 GHz의 교류에 대해 95% (13 dB 이상) 이상의 전자파 차폐 특성을 보였다. 이러한 친환경 소재의 전자파 차폐 물질을 벽지나 아미지월에 적용하여 실내 디자인에 활용함으로서 실내 공간에서 발생되는 인체의 유해 전자파를 효과적으로 차폐할 수 있을 뿐만 아니라 친환경 소재를 통해 포름알데히드, 휘발성 유기화합물 등과 같은 각종 유해 화학물질로부터의 피해를 최소한으로 줄일 수 있게 될 것이다.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2020년도 봄 학술논문 발표대회
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• pp.148-149
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• 2020

Currently, the most commonly used EPS insulation material has been mainly used because its ease of adhesion with concrete. However, due to poor adhesion with wallpaper, separate adhesion needs to be strengthened and there are cases of breakage or grooves in the process of dismantling the mold. The biggest problem is that when a fire breaks out, various harmful substances are present and highly flammable. Cork used in this study is a truly eco-friendly building material that is taken from between the outer and inner bark of cork trees and does not damage the wood. Also, it is a porous material that is made up of countless cells and contains an air gap between the cells. It is very light in weight between 0.06 and 0.07 and has excellent insulation with a heat conductivity of 0.04W/mK. In addition, it has high stability in the topic of conversation because it does not produce harmful gas when burned and has self-sustaining properties. However, research on cork, an eco-friendly building material with excellent performance to date, is scarce Therefore, we encourage existing scholars to raise interest in new eco-friendly building materials through this study. It also aims to manufacture insulation boards with new inorganic properties using the low weight and heat conductivity held by the cork.

• 한국실내디자인학회논문집
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• 제21권1호
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• pp.86-94
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• 2012

The purpose of this study was to examine the importance of eco-friendly design elements related to residential space by residents and what element they prefer. To achieve this, 18 eco-friendly design elements related to residential space were selected from the Green Building Certification Criteria and the relevant research papers. These elements were categorized into four areas; the ecological environment area (4 elements), the indoor environmental climate one (4 elements), the energy and resource saving one (6 ones), and the material one(4 ones). On the base of these 18 elements, the importance degree of each element was examined by using 5-point Likert scale. The subjects were 299 housewives living in apartment houses in Jangyu new town, Gimhae. The subjects perceived strongly the importance of eco-friendly design elements, but many of them did not know about Green Building Certification Criteria. Overall importance of 18 elements by the residents was very high. Also, the indoor environmental climate area was considered as the most important one, followed by the energy and resource saving area, the material area, and the ecological environment one.

• 한국실내디자인학회:학술대회논문집
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• 한국실내디자인학회 2005년도 추계학술발표대회 논문집
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• pp.209-210
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• 2005

This research aims at proposing new space design model with eco-friendly material, paper, for sustainable life mode. As pro-natural paper which is feasible for secondary processing in interior design, it's significance lies in its easy adaptability to nature and depreciation of environment pollution. The target space which needs alterability is designed with corrugated paper as its eco-friendly and changeable features as corrugated paper made out of wood pulp would return to nature after decomposition. If the material will be recycling, reuseable, and renewable which are eco-friendly and durable, then sustainable space design would be created.