• 대한화학회지
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• 제56권6호
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• pp.716-719
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• 2012

Diazo coupling reactions of aromatic amines with 2-naphthol in a green, efficient and easy procedure is described. Ferric hydrogensulfate catalyses this reaction in water at room temperature and short reaction time with high yields. The antibacterial activities of the synthesized compounds against four pathogenic bacteria are also investigated.

• 청정기술
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• 제11권2호
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• pp.75-81
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• 2005

나노기술의 발전은 기존 환경기술의 패러다임 자체를 변화시키고 있다. 나노수준에서의 환경문제의 이해를 바탕으로 하는 환경기술 정책들이 추진되고 있으며, 청정공정기술의 구현을 위한 통합환경관리로의 개념 전환이 이루어지고 있다. 본 논고에서는 이러한 개념을 바탕으로 청정기술을 위한 나노기술기반 환경 센싱 및 모니터링 기술의 필요성에 대하여 소개하고자 한다. 현재 국내의 환경 시장은 상당부분 외국기술에 의존하고 있지만, 정부의 나노기술에 대한 집중 투자로 인해 나노기술을 활용한 환경 센싱 및 모니터링 분야의 발전이 있을 것으로 기대한다.

• 대한원격탐사학회:학술대회논문집
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• 대한원격탐사학회 2005년도 Proceedings of ISRS 2005
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• pp.522-525
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• 2005

Light detection and ranging (LIDAR) is one of the effective technologies for monitoring forest inventory, and importance of forestry is increasing because of its function as the sink of green house gases (GHG). This study aims at development of a methodology for better and more accurate estimation of physical parameters of individual trees by removing sudden drops of LIDAR data within a crown. Our study area is located in Aomori prefecture, the northern part of Honshu Island, with the dominant species of Japanese cedar. The results show practicality of our method in the usage of LIDAR data in the field of forest inventory.

• 한국정보통신학회논문지
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• 제15권9호
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• pp.1979-1984
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• 2011

본 논문은 가정내 주 배전시스템으로 DC 전력을 사용하기 위한 그린 Platform을 제시하였다. 제안한 Platform은 공통 DC bus와 양방향 DC 그리드를 갖는 구조이며 DC bus에 연결된 장비들은 에너지원(source), 부하(load), 양방향 장비(bi-directional devices)로 구분하였다. 현재의 기술을 바탕으로 전압과 시스템을 DC로 변환하고 부하에 직접 연결 시킴으로서 시스템 효율을 증가시키기 위한 구축 방법을 제시하였다.

• 한국산업융합학회 논문집
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• 제21권3호
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• pp.109-115
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• 2018

This paper proposes the method to develop the fuel of suljigemi pellet using agricultural by-products the occurred during the manufacturing of alcohol. The goal of the development of suljigemi using biomass is to make the pellet fuel of high calorie. The suljigemi pellet is difficult to recycle waste in the manufacture company of alcohol. suljigemi pellet has the effect of zero emission as the soil conditioner using ash after burning. Also suljigemi pellet has the reduction effect of carriage fee, fuel economy and low-cost high-efficiency effects, environmentally clean fuel as CO2 emissions savings. So the technologies of the suljigemi fuel pellet are developing low carbon, green growth renewable energy fuel through futuristic energy system will be. In experiments, suljigemi pellets confirmed the calories by about 10% higher than wood pellets with the same conditions.

• 한국태양광발전학회지
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• 제6권1호
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• pp.35-44
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• 2020

In line with the goal of achieving a low carbon future, the Philippines made an aspirational target which aims to increase the total installed capacity coming from renewable energy (RE) to at least 20,000 MW by 2040. The country's RE sector has progressively advanced over the years following the enactment of its comprehensive RE Law in 2008. Among other RE technologies, solar achieved the highest installation growth from 2008 to 2018. The paper seeks to assess whether the Philippines' RE target by 2040 is achievable in terms of the current status and future outlook for RE. Major roadblocks that hamper RE development are identified and discussed, including some recommendations for policy-making and energy planning.

• Environmental Engineering Research
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• 제20권4호
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• pp.307-328
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• 2015

The increasing demand for materials, energy and products drives chemical engineers to propose new solutions everyday able to promote development while supporting sustainable industrial growth. Membrane engineering can offer significant assets to this development. Here, they are identified the most interesting aspects of membrane engineering in strategic industrial sectors such as water treatment, energy production and depletion and reuse of raw materials. The opportunity to integrate membrane units with innovative systems to exploit the potential advantages derived from their synergic uses is also emphasized. The analysis of the potentialities of these new technologies is supported by the introduction of process intensification metrics which provide an alternative and innovative point of view regarding the unit performance, highlighting important aspects characterizing the technology and not identified by the conventional analysis of the unit performance.

• 한국재료학회:학술대회논문집
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• 한국재료학회 2011년도 춘계학술발표대회
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• pp.10.1-10.1
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• 2011

Energy harvesting technologies converting external sources (such as thermal energy, vibration and mechanical energy from the nature sources of wind, waves or animal movements) into electrical energy is recently a highly demanding issue in the materials science community for making sustainable green environments. In particular, fabrication of usable nanogenerator attract the attention of many researchers because it can scavenge even the biomechanical energy inside the human body (such as heart beat, blood flow, muscle stretching, or eye blinking) by converging harvesting technology with implantable bio-devices. Herein, we describe procedure suitable for generating and printing a lead-free microstructured $BaTiO_3$ thin film nanogenerator on plastic substrates to overcome limitations appeared in conventional flexible ferroelectric devices. Flexible $BaTiO_3$ thin film nanogenerator was fabricated and the piezoelectric properties and mechanically stability of ferroelectric devices were characterized. From the results, we demonstrate the highly efficient and stable performance of $BaTiO_3$ thin film nanogenerator and the integration of bio-eco-compatible ferroelectric materials may enable innovative opportunities for artificial skin and energy harvesting system.

• 한국환경교육학회지:환경교육
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• 제10권2호
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• pp.325-338
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• 1997

Review of the global change in various energy usages and resulting environmental impacts were made in terms of population increase, economic development and energy consumption. Greater use of fossil fuels in past couple of centuries give rise to acid rain and gradual climate changes mainly due to Green House inducing gases emissions from fossil fuel combustion. In view of the forthcoming Kyoto conference in December, various alternative options were assessed. To cope with rapidly developing robust Korean economy, the alternative energy options for the sustainable development in 21st Century would be the wider use of Nuclear Energy in parallel with constrained use of fossil fuel and renewable energy development. However there are many hurdles to overcome. One of the most important element is to improve public acceptability of those alternatives. Since public acceptance depend heavily upon individual perception on specific energy technology applications, the basic energy technologies education from primary up to high school education and the related curriculum organization is important. The suggested improvement in education for Nuclear Energy Application was made on the basis of advanced industrial countries with substantial Nuclear Energy Application programs.

• KIEAE Journal
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• 제15권4호
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• pp.61-68
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• 2015

[Purpose] Recently, skyscrapers have sharply increased throughout the world, including South Korea. Although a skyscraper has its own merit such as the landmark of a city, it also has various problems like massive energy consumption. This study is aimed to establish the concept of environment-friendly skyscraper and propose a plan to realize skyscraper after analyzing the architectural, facility and environmental friendly elements of skyscrapers. [Method] This study lists up skyscrapers over 40 floors and 200 meters high. Upon 10 constructed buildings, it analyzes their basic plans and the green building technologies applied to them and suggests effective and environment-friendly architectural plan. [Result] This study examined the distinctions of the layout, shape, facade, and floor plan plane of 10 skyscrapers and found out specific techniques to be used for the use plan of natural energy, plan for saving resources and reducing wastes and a plan for environmental architecture and system.