• 한국환경보건학회지
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• 제35권6호
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• pp.433-446
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• 2009

Pharmaceuticals in the aquatic environment are trace contaminants of growing importance in environmental health due to their physiologically active nature. Pharmaceuticals could affect non-target species and might eventually damage sustainability of susceptible populations in the ecosystem. Potentials for health consequences among susceptible human population cannot be ruled out since long-term exposure to cocktails of pharmaceuticals, which might be present in drinking water, is possible. Selection of antibiotic resistant microorganisms is of another concern. In order to understand, and if needed, to properly address the environmental health issues of pharmaceutical residues, knowledge gaps need to be filled. Knowledge gaps exist in many important areas such as prioritization of target pharmaceuticals for further risk studies, occurrence patterns in different environments, chronic toxicities, and toxicities of pharmaceutical mixtures. Appropriate treatment technologies for drinking water and wastewater could be developed when they are deemed necessary. One of the simplest, yet most efficient measures that could be undertaken is to implement a return program for unused or expired drugs. In addition, implementation of environmental risk assessment frameworks for pharmaceuticals would make it possible to efficiently manage potential environmental health problems associated with pharmaceutical residues in the environment.

• 한국의류학회지
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• 제42권6호
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• pp.1016-1024
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• 2018

Lifestyle of Health and Sustainability (LOHAS) influences the development of hygienic and health-oriented functional textile products; consequently, there has been an increase in the prospects for environmentally friendly natural dyeing products with functional and sensitive characteristics. Therefore, the present study expresses a functional manifestation on fabrics by treatment with chitosan and tannin using natural Coptidis Rhizoma. Cotton and wool fabrics dyed with Coptidis Rhizoma after treatment with chitosan and tannin. Consequently, the antibiosis of fabric dyed with Coptidis Rhizoma was excellent with 99.9% bacterial reduction for Staphylococcus aureus and Klebsiella pneumoniae in both fabrics. The deodorization rate was more than 90.0% in both fabrics after 120 minutes. The UV-A protection rate was 88.2% and the UV-B protection rate was 87.7% for cotton. The UV-A protection rate was 88.2% and the UV-B protection rate was 84.3% for wool fabric. Therefore, both of the dyed fabrics showed excellent UV protection by treatment with only chitosan and tannin, without mordants. Therefore, chitosan and tannin treatments were able to manifest functionalities in the fabrics dyed with Coptidis Rhizoma.

• 인간식물환경학회지
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• 제24권6호
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• pp.551-561
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• 2021

Background and objective: Vietnam is prioritizing agricultural production for food export capacity in all national policies. As a result, for three decades, its agriculture has been making quite many remarkable achievements. Methods: The most successful one is that the nation has become one of the world's leading rice exporters and ensures its national food security. Through these endeavors, the Mekong River Delta (MRD), in particular, has emerged as a key region in ensuring national food security and rice export. Results: The new era can now see Vietnamese agriculture turning to place special emphasis on commodity quality and the improvement of the living environment. This is evidenced, for example, by the phenomenon that the MRD, as a rice basket of the whole country, is making moves back to nature-based agriculture with attempts to restore the natural ecology, including preserving and restoring local traditional rice seeds, adopting natural farming practices and minimizing the use of chemical fertilizers and pesticides. Conclusion: The case studies of nature-based farming practices in the MRD indicate that, while the national agriculture is generally developing large-scale production, the small-scale farming in the region, integrated with tourist and educational activities on-site, is meeting the demands of a highly potential domestic niche market. Moreover, this model appears to be a sustainable farming approach that defines itself as a working green livelihood for the region.

• Mycobiology
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• 제51권5호
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• pp.343-353
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• 2023

Lichens play crucial roles in the ecosystems, contributing to soil formation and nutrient cycling, and being used in biomonitoring efforts to assess the sustainability of ecosystems including air quality. Previous studies on heavy metal accumulation in lichens have mostly relied on manipulated environments, such as transplanted lichens, leaving us with a dearth of research on how lichens physiologically respond to heavy metal exposure in their natural habitats. To fill this knowledge gap, we investigated lichens from two of South Korea's geographically distant regions, Gangwon Province and Jeju Island, and examined whether difference in ambient heavy metal concentrations could be detected through physiological variables, including chlorophyll damage, lipid oxidation, and protein content. The physiological variables of lichens in response to heavy metals differed according to the collection area: Arsenic exerted a significant impact on chlorophyll degradation and protein content. The degree of fatty acid oxidation in lichens was associated with increased Cu concentrations. Our research highlights the value of lichens as a bioindicator, as we found that even small variations in ambient heavy metal concentrations can be detected in natural lichens. Furthermore, our study sheds light on which physiology variables that can be used as indicators of specific heavy metals, underscoring the potential of lichens for future ecology studies.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제18권4호
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• pp.1090-1100
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• 2024

While the incorporating ESG indicator is recognized as crucial for sustainability and increased firm value, inconsistent disclosure of ESG data and vague assessment standards have been key challenges. To address these issues, this study proposes an ambiguous text-based automated ESG rating strategy. Earnings Call Transcript data were classified as E, S, or G using the Refinitiv-Sustainable Leadership Monitor's over 450 metrics. The study employed advanced natural language processing techniques such as BERT, RoBERTa, ALBERT, FinBERT, and ELECTRA models to precisely classify ESG documents. In addition, the authors computed the average predicted probabilities for each label, providing a means to identify the relative significance of different ESG factors. The results of experiments demonstrated the capability of the proposed methodology in enhancing ESG assessment criteria established by various rating agencies and highlighted that companies primarily focus on governance factors. In other words, companies were making efforts to strengthen their governance framework. In conclusion, this framework enables sustainable and responsible business by providing insight into the ESG information contained in Earnings Call Transcript data.

• 대한기계학회논문집 C: 기술과 교육
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• 제3권4호
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• pp.257-264
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• 2015

원자력 발전이 중요한 에너지 공급역할을 담당하기 위해서는 안전성을 확보하고, 사용 후 핵연료 문제를 해결하여야 한다. 이와 같은 문제를 해결하기 위한 방안으로 소듐이나 납비스무스 공융합금 등과 같은 액체금속을 냉각재로 이용하는 방안이 연구되고 있다. 본 논문에서는 액체금속 유동모사 실증 설비 개발을 위한 설계변수 검토, 설계 해석, 구조재의 선정 및 설비 개발 결과를 서술하였다. 설비의 개발은 열수력 해석코드의 해석을 통해 수행되었고 충분한 자연순환 유량을 갖는 설비제작 기술을 확보하였다.

• Computers and Concrete
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• 제21권3호
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• pp.249-259
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• 2018

The use of recycled aggregate in concrete is gaining much attention due to the growing need for sustainability in construction. In the present study, Self Compacting Concrete (SCC) is made using both natural and recycled aggregate (crushed recycled concrete aggregate from building demolished waste) and performance of recycled aggregate based SCC for the bond behaviour of reinforcement is evaluated. The major factors that influence the bond like concrete compressive strength (Mix-A, B and C), diameter of bar ($D_b=10$, 12 and 16 mm) and embedment length of bar ($L_d=2.5Db$, $5D_b$ and full depth of specimen) are the parameters considered in the present study in addition to type of aggregates (natural and recycled aggregates). The mix proportions of Natural Aggregate SCC (NASCC) are arrived based on the specifications of IS 10262. The mix proportions also satisfy the guidelines of EFNARC. In case of Recycled Aggregate SCC (RASCC), both the natural coarse and fine aggregates are replaced 100% by volume with that of recycled aggregates. These mixes are also evaluated for fresh properties as per EFNARC. The hardened properties like compressive strength, split tensile strength and flexural strength are also determined. The pull-out test is conducted as per the specifications of IS 2770 (Part-1) for determining the bond strength of reinforcement. Bond stress versus slip curves were plotted and a typical comparison of RASCC is made with NASCC. The fracture energy i.e., area under the bond stress slip curve is determined. With the use of recycled aggregates, reduction in maximum bond stress is noticed whereas, the normalised maximum bond stress is higher in case of recycled aggregates. Based on the experimental results, regression analysis is conducted and an equation is proposed to predict the maximum bond stress of RASCC. The equation is in good agreement with the experimental results. The available models in the literature are made use to predict the maximum bond stress and compare the present results.

• The Korean Journal of Ecology
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• 제24권5호
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• pp.323-332
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• 2001

문화경관은 인간의 자연자원이용과 그에 대한 자연의 반응이 조화롭게 어우러져 생긴 산물이다. 자연은 인간의 삶을 보장하기 위하여 그 생존에 필요한 자원 뿐만 아니라 생활에 필요한 자원도 공급하고 있다. 인간은 자연이 주는 이러한 혜택을 이용하여 문명화를 진전시켜 왔다. 얼마전까지 인간과 자연 사이의 관계는 조화의 관계를 유지하여 지속가능한 자원이용을 보장받아 왔고, 우리는 문화경관의 존재를 통하여 그 사실을 발견하고 있다. 그러나 급속도로 진행된 경제성장과 그것에 기인한 개발중심의 논리는 지구환경위기, 각종 자원고갈의 위기, 더 나아가 인간의 정신적 빈곤현상까지 몰고 왔다. 이러한 시점에서 인간과 자연 사이의 조화로운 관계의 전형인 문화경관을 대상으로 그 성립배경과 기능을 검토하고, 새로운 패러다임을 토대로 그 가치를 점검하는 것은 건강한 사회와 경제를 실현하기 위한 새로운 전략을 창조하는데 가치있는 정보를 제공할 수 있다. 본 연구에서는 한국의 문화경관의 성립배경을 검토하였고, 생태적, 경제적 측면에서 그것의 효용과 가치 그리고 문화전승의 장으로서 그 활용방안을 검토하였다.

• 한국실내디자인학회논문집
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• 제26권2호
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• pp.83-91
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• 2017

This study was conducted by the awareness that although interior spaces using the techniques and characteristics of assemblage are excellent means to reveal distinctiveness and identity with preeminent originality which are different from other spaces, there are few domestic studies and literatures on them. The results analyzed by preceding studies and cases on the characteristics of expression of assemblage which appear in the interior spaces of commercial areas can be summarized as follows; First, assemblage expresses identity of spaces with symbols capable of multiple interpretations through the method of integration and repetition of the materials used. Second, it strongly reminds visitors of memories on spaces by producing odd and unfamiliar scenes with such designs as installation art. Third, when it uses ordinary materials, it adds combination, integration, transformation or colors to the materials for extraordinary traits. Fourth, it pursues sustainability through recycling or upcycling by using wastes or natural materials. Fifth, in order to express materials to fit the purposes of spaces, it formulates outcomes with intentional plans. To sum up above analysis results, expressions of assemblage which appear in modern commercial spaces are characterized by expression of symbols with multiple meanings, purse formativeness which fit the purposes and meanings of spaces, play the role of reminding memories on places by producing extraordinary spaces with strangeness and unfamiliarity such as installation art and sometimes show sustainability by using recyclable materials. The results of this study are expected to be utilized as reference materials which suggest directions of approach to interior spaces through assemblage techniques and materials which can be used in various design terms by domestic designers.

• 자원ㆍ환경경제연구
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• 제15권2호
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• pp.355-386
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• 2006

일본과 미국은 순환형 사회의 구현을 국가 정책의 최상위 목표로 설정하고 폐기물 제로의 사회로 향하여 구체적인 진전을 나타내고 있다. 기업차원에서 청정생산구축을 통하여 산업경쟁력을 강화하는 단계를 넘어서 지역경제개발에서도 자원순환적 접근을 체계적으로 시도하고 있다. 에코타운 프로젝트는 지역경제 개발과 환경기술 개발을 위한 R&D 지원을 병행함으로써 환경산업의 육성, 그리고 지역개발과 환경문제의 개선을 동시에 추구하는 통합적 정책의 본보기가 된다. 미국의 사례에서는 생태적 산업개발을 수행하기 위하여 기울이는 세심한 기획과 지속 가능한 건물의 설계, 협력적 네트워크의 구축을 위한 물질순환에 대한 엄밀한 연구, 그리고 협조와 조정의 모형을 보게 된다. 순환형 시스템의 구축은 에너지와 자원의 사회 전체적 효율을 향상시키고, 환경과 경제, 산업경쟁력의 문제를 동시에 해결함으로써 기후변화 문제를 비롯한 지구환경 문제에 가장 효과적으로 대응하는 방안이다. 국내에서도 모든 국가 정책의 디자인 자체가 자원순환의 비전에 의거하여 친환경적으로 설계되도록 하는 혁신이 필요하다.