• 대한화학회지
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• 제56권3호
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• pp.316-321
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• 2012

Poly(ethylene glycol) (PEG) has been used as a sustainable, non-volatile, and environmentally friendly reaction solvent for the synthesis of functionalized benzene/biaryl and fluoren-9-one derivatives from activated acetylenes and 1,3-diones at $100^{\circ}C$. No additional solvent and catalyst are required.

• Journal of Forest and Environmental Science
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• 제29권2호
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• pp.109-115
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• 2013

Fast-grown wood generally contains a high proportion of juvenile wood that results in inferior dimensional stability and durability against biological deteriorations. In the present research, the Acacia mangium wood from plantation forests in Vietnam was treated with high temperature in air. The effects of heat treatment on physical properties of Acacia mangium wood, including mass loss (ML), water absorption (WA), water-repellent effectiveness (WRE) and anti-swelling efficiency (ASE) were examined. The results showed that the dimensional stability and the water-repellent effectiveness are increased by about 15-46% and 8-18%, respectively. However, the mass and dimension of wood are decreased. The results also indicated that both treatment temperature and treatment duration significantly affect the wood properties of Acacia mangium. It is thus concluded that heat treatment demonstrates an interesting potential to improve the wood quality of Acacia mangium for solid timber products. This technology provides an environmentally safe method of protecting sustainable common woods to give a new generation of value-added biomaterials with increased stability without the use of toxic chemicals.

• Industrial Engineering and Management Systems
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• 제2권1호
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• pp.35-44
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• 2003

Recovery of end-of-life (EOL) products is an environmentally and economically sound way to achieve many of the goals of sustainable development. Many product recovery systems are dependent upon destructive disassembly such as shredding, which undesirably causes a large volume of shredder dust and makes parts reuse impossible. Although non-destructive disassembly has been considered as an alternative for solving the problems, the classification of disassembled items has not been sufficiently investigated. In this paper, we propose a model that mathematically optimizes the disassembly and classification of EOL products. Based on the AND/OR graph that illustrates all possible disassembly sequences of a given product, we identify the physical properties that are considered as constraints in the model. As a result of the solution procedure, the recovery problem can be transformed into a mixed integer linear programming (MILP) model. We show an example that illustrates the concept of our model.

• International Journal of Advanced Culture Technology
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• 제8권4호
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• pp.101-109
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• 2020

Along with rapid global economic development, people are slowly becoming environmentally aware and green development is increasingly a vital topic of social concern. Academic circles are currently focusing on environmental protection and economic growth to explore the coordinated development of both and to achieve a win-win solution between them. To study the relationship between environmental protection experience and both cost and performance, this study empirically analyzes companies listing on the Shenzhen A-share market from 2014 to 2018. The results show that senior executives' environmental protection experience is negatively correlated with corporate costs, whereas it is positively correlated with business performance. These results provide empirical evidence of the importance of enterprises introducing and cultivating environmental personnel and insisting on sustainable development.

• 한국폐기물자원순환학회지
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• 제35권7호
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• pp.627-639
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• 2018

Waste management in Jeju Province, Korea, has recently emerged as an urgent problem. The increasing waste discharge requires more landfills but, since it is an island, the available land is restricted. Accordingly, an efficient waste management urgently requires environmentally sustainable policies. In this article, the waste discharge characteristics (such as the amount of waste, its composition, etc.) of Jeju Province have been compared with those in the rest of Korea. The current industrial waste management of two cities on the Island, Jeju City and Seogwipo City, has been also analyzed to suggest policies for an efficient management. The local government's endeavor to enhance environmental awareness of the community has been known to reduce the private cost of policy compliance, and have individuals recognize the results of their policy compliance. Policies to achieve the above are then proposed.

• Nuclear Engineering and Technology
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• 제54권10호
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• pp.3672-3681
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• 2022

This study investigates the environmental footprint impacts of nuclear energy consumption in the presence of environmental technology and globalization of the ten largest ecological footprint countries from 1990 up to 2017. By considering a set of methods that can help solve the issue of cross-sectional dependence, we employ the Lagrange multiplier bootstrap cointegration method, Driscoll-Kraay standard errors for long-run estimation and feasible generalized least squares (FGLS) and panel-corrected standard errors (PCSE) for robustness. The finding revealed significant negative effects of nuclear energy consumption, environmental-related technology, population density and significant positive effects of globalization and economic growth on ecological footprint. These results are also robust by assessing the long-run impacts of predictors on carbon footprint and CO₂ emissions as alternate ecological measures. These conclusions provide the profound significance of nuclear energy consumption for environmentally sustainable development in the top ten ecological footprint countries and serve as an important reference for ecological security for other countries globally.

• 국제학술발표논문집
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• The 2th International Conference on Construction Engineering and Project Management
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• pp.684-693
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• 2007

The construction industry is a significant component of many economies and typically contains a high proportion of small and medium enterprises. However, it is generally understood that this industry is fragmented, adversarial, not highly innovative and not quick to respond to change. At the same time, the industry is under pressure to continue to embrace new technologies and methods, and to adapt better to current and emerging global issues such as sustainability. In order to meet these challenges, firms in the industry need to understand the issues involved and manage their practices accordingly. This paper describes exploratory research into the role of innovative and environmentally sustainable design and construction practices in one group of construction firms, viz., smaller residential building firms in Queensland, Australia.

• Animal Bioscience
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• 제37권4_spc호
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• pp.742-754
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• 2024

Asia is not only the primary region for global pig production but also the largest consumer of pork worldwide. Although the pig production in Asia has made great progress in the past, it still is confronted with numerous challenges. These challenges include: inadequate land and feed resources, a substantial number of small-scale pig farms, escalating pressure to ensure environmental conservation, control of devastating infectious diseases, as well as coping with high temperatures and high humidity. To solve these problems, important investments of human and financial capital are required to promote large-scale production systems, exploit alternative feed resources, implement precision feeding, and focus on preventive medicine and vaccines as alternatives to antibiotics, improve pig breeding, and increase manure recycling. Implementation of these techniques and management practices will facilitate development of more environmentally-friendly and economically sustainable pig production systems in Asia, ultimately providing consumers with healthy pork products around the world.

• 국제초고층학회논문집
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• 제13권2호
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• pp.195-204
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• 2024

HAUT, a residential tower, is a prototype for building innovative and environmentally-friendly high-rise timber structures. The team - Arup, Team V Architecture, Lingotto and JP van Eesteren - designed and built an ambitious sustainable building: a timber skyscraper, with 21 floors one of the tallest timber hybrid towers in the world. Never before has this highest sustainability rating - BREEAM Outstanding - been awarded to a residential building in the Netherlands. As a result of the new techniques for a timber hybrid tower of 73 meters high, there is interest from all over the world for this combination of sustainability and urban densification.

• 한국건설관리학회논문집
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• 제9권2호
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• pp.117-124
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• 2008

자연환경을 고려하지 않은 무분별한 개발행위로 인하여 환경오염과 생태계 파괴 등의 문제가 발생하고 있다. 국제사회에서도 환경규제가 엄격해짐에 따라 환경오염 문제는 세계적인 관심사가 되고 있다. 우리나라에서도 사전환경성검토제도, 환경 영향평가제도 등과 같은 환경을 보전하려는 노력이 다각도로 전개되고 있으며, 이는 건설사업에 미치는 영향이 매우 크다. 자연생태환경분야의 환경영향요인을 체계적으로 분석하고 반영하지 않아 건설사업이 지연 및 중단되고 사업의 타당성을 재검토하는 등 대규모 국책사업이 차질을 빚는 경우가 많다. 생태계 기능과 균형이 파괴되지 않도록 자연환경을 보전하고 건설행위로 발생될 수 있는 환경오염문제를 최소화하여 환경 친화적인 건설사업이 시행되어야 한다. 본 논문에서는 마스터플랜단계, 기본계획 및 실시설계단계, 시공단계, 유지관리단계 등 건설사업의 전단계에서 적용할 수 있는 자연생태환경분야의 환경요소별 검토항목을 제시하였다. 이 연구에서 제시한 환경성 검토항목은 마스터플랜단계에서는 의사결정자, 기본계획 및 실시설계단계에서는 설계자, 시공 및 유지관리 단계에서는 건설사업관리자들에게 환경적인 측면에서 지속가능한 개발(sustainable development)을 유도하는데 도움을 줄 것으로 기대된다.