• 한국인쇄학회지
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• 제28권2호
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• pp.87-99
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• 2010

The ink which is left by sealed more than 6 months, it clogs head nozzle of machine due to precipitation and coagulation. In addition, if you stop printing about 3~4 hours in the middle of printing work, the head nozzles of printer could be naturally clogged. To prevent of this situation, worker should implement cleaning and checking head nozzle before hands. When the nozzle is clogged in the middle of work, running a head cleaning mode can clear the clogged nozzle. Yet, large amount of waste inks which are passed clogged nozzle will be remained after cleaning. It would be very nice that ink companies take the waste ink back by green marketing, but none of them are doing it currently. The purpose of this research is that making a black water-based recycle ink by waste inks which are left of nozzle clogging or passed expiration date. This recycle ink will improved working environment and reduce cost of disposing waste inks. Furthermore, it is very environment friendly and economical. It is called a recycle ink which is water-based black ink made by waste inks.

• 한국어병학회지
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• 제33권1호
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• pp.97-101
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• 2020

Although aquaculture production rates grown over the years, aquatic animal diseases occur every year which causes substantial economic losses. When an aquatic animal is infected with an aquatic animal pathogen it is either incinerated or buried according to the aquatic life disease control act. Although these methods prevent the spread of disease, it is not environment friendly. Here, we developed an aquatic animal rendering equipment for disposal of fish waste which is environment-friendly and efficient. Also, fertilizer components of fish waste were evaluated value for recycling. The mobile rendering equipment was designed for field operation and/or high temperature and pressure system, oil and water separator, and shredding drying apparatus. During the experiment (July-2016 to November-2016), a total of 53,824 kg fish waste was collected, and 29,216 kg compost of rendering by-product was made. Also, compost made from viral (Viral hemorrhagic septicemia virus) infected fish did not reflect any detectable pathogen. The concentration of nitrogen, phosphorus, and organic matter in the fish waste compost were 2.17%, 26.98%, and 92.44%, respectively. The results suggest that fish waste used in this study was decomposed efficiently as per the official standard for fertilizer product. This equipment can be useful for efficient inactivation of the aquatic animal pathogenic agents and recycling of the fish waste in an environment-friendly manner.

• Weed & Turfgrass Science
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• 제3권1호
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• pp.13-18
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• 2014

본 연구는 벼 수확 전에 사료맥류를 파종 재배할 경우 뚝새풀의 친환경적 방제 가능성을 검토하고자 수행되었다. 해수를 뚝새풀 발생전, 1엽 그리고 2엽기에 30, 50, 100% 농도로 처리한 결과, 뚝새풀은 1엽기에 100% 처리에서 50% 정도 억제되었다. 또한 무기염류 처리에 의한 보리생육과 뚝새풀의 방제효과를 검토한 결과 보리의 출현율은 sodium chloride 처리에서는 영향이 없으나, ferrous sulfate의 처리에서는 35~50% 정도 낮았으며, 뚝새풀은 sodium chloride 처리에서 36~44%, ferrous sulfate의 처리에서 47.5~78.8% 정도 억제되었다. 작물 파종량 증가에 의한 뚝새풀의 발생억제 효과를 검토한 결과, 보리의 파종량이 많을수록 입모수가 많고, 뚝새풀의 발생량은 유의적으로 낮았으며, 조사료 수량은 $300kg\;ha^{-1}$ 파종에서 가장 높았다. 결과적으로 벼 수확전 입모중 사료맥류 재배시 뚝새풀의 친환경적인 방제는 50% 정도의 수준은 가능한 것으로 판단되었다.

• 한국환경생태학회:학술대회논문집
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• 한국환경생태학회 2010년 학술대회 논문집
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• pp.108-111
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• 2010

• 한국환경생태학회:학술대회논문집
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• 한국환경생태학회 2005년도 임시총회 및 학술논문발표회
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• pp.90-92
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• 2005

• 한국철도학회:학술대회논문집
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• 한국철도학회 2008년도 춘계학술대회 논문집
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• pp.1802-1808
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• 2008

Recent interest in the construction sector, rising about the environment and eco-friendly recycled material resources, and increase the development of method But despite these efforts, and the diverse functional and structural changes in the structure can not be an appropriate response to the functional waterproof structural changes in the structures and appropriate response Diversification does not waterproof and functional issues such as durability, and which are occurring due to the structure to secure stability and durability, never sees the conservative economic losses due to import constructability reinforcement situation. Therefore, this study applies to structure the existing waterproof method (hereinafter referred to as structures water-resistant methode), and to review recent issues of environmental pollution and resource waste, and taking on environmental issues, such as Revelation and functional Inorganic mixed in a way to leverage the manufacturing water-resistant material "Re Inorganic, functional and environmentally friendly high-viscosity mix asphalt waterproof rubber reinforcements, and taking conservative" for the characterization and performance assessment to the issues raised by the structure and whether the judge would respond.

• 한국농공학회:학술대회논문집
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• 한국농공학회 2003년도 학술발표논문집
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• pp.111-114
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• 2003

Due to the increasing interest in preserving environment, many environmentally friendly canal consolidation methods has been developed. Those methods, however, tend to focus more on the scenery than on the control of water. Thus, the safety of such methods are need to be studied more profoundly. In this study, the hydraulic examination of applied environmentally friendly methods using HEC-RAS model considering roughness coefficient and shear force in a canal is done to present the hydraulic safety of each methods. Further more, vegetations distribution characteristics and maintenance methods of channel are investigated.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2019년도 추계 학술논문 발표대회
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• pp.124-125
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• 2019

The use of road cutters in the maintenance of obsolete underground facilities maintains polluting dust, cutting sludge, etc, polluting the air environment, soil, and water, causing civil complaints caused by noise, and consequently interrupting work. Therefore, it is time for eco-friendly pavement cutting technology for fugitive dust and cutting sludge emission management and noise management. This study was based on research by the development of eco-friendly pavement cutting technology in urban areas. In this study, the current state of existing road cutters is investigated and the patented technology analysis of road cutters is conducted to derive the design elements of eco-friendly pavement cutting technology.

• 한국물환경학회지
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• 제27권6호
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• pp.932-937
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• 2011

Main objectives of this paper were; firstly, to explain impacts of suspended solid in the water body on the relationship between water quantity and water quality; secondly, study on the inter-relationship between organic materials, nutrients, pathogens, and suspended solids considering eco-friendly water resources. Relationship between water quality and water quantity is not easy to understand as it includes physicochemical-biological reactions and diffuse pollutions. Especially, suspended solid makes water resource management difficult. Eroded soil in the upper land transported to the downstream by water flows carrying biological and physicochemical information and sedimented in the downstream. As sediment scoured under high flow condition and environmental change, suspended solid and sediment should be emphasized for understanding the inter-relationship between water quality and water quantity. Knowledge gaps between known monitored data and management of suspended solid were identified as well for future study.

• Journal of the Korean Wood Science and Technology
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• 제39권1호
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• pp.21-27
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• 2011

This study was carried out to examine properties of water resistant plywood by using serum protein adhesive which is natural, environment-friendly and human-friendly. For the preparation of the serum protein adhesive, pig blood from slaughterhouse was centrifuged and serum was separated from corpuscles and concentrated to 30% by dry weight basis. This concentrated serum protein was modified with PF resin (50% NVC) with the ratio of 9 : 2.5. Plywood made by this modified serum protein gave 1.21 N/$mm^2$ of dry bonding strength, 0.80 N/$mm^2$ of wet boil bonding strength, 0% of cyclic delamination test value, and 0.025 ppm of HCHO emission, which met the excellent super $E_0$ grade and water resistant plywood.