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퇴비더미, 야초더미와 농촌하수구에 서식하는 지렁이 종과 군집
나영은,홍용,이상범,고문환,안용준,Na, Young-Eun,Hong, Yong,Lee, Sang-Beom,Koh, Mun-Hwan,Ahn, Young-Joon 한국토양동물학회 2001 한국토양동물학회지 Vol.6 No.1
This study was carried out to investigate the species composition and its abundance in the heap of compost, wild-grass, and sewer. 1,525 individuals were collected from 11th July, 2000 to 3rd August, 2000 at the 108 sites. They encompassed 3 families, 4 genera and 6-8 species. Species composition and its percentile abundance were as follows: Eisenia fetida 86.2%, Aporectodea trapezoides 0.5%, Amynthas hilgendorfi 1.1%, Amyntha agrestis 2.8%, A. koreanus group 6.3%, Drawida sp. 17%, Others 1.4fo in the compost heap, Eisenia fetida 9.8%, Aporectodea trapezoides 9.1%, Amynthas hilgendorfi 12.1%, Amyntha agrestis 25.1%, A. koreanus group 27.8%, Drawida sp 2.8%, Others 13.2% in the wild-grass and Eisenia fetida 24.2%, Aporectodea trapezoides 5.4%, Amynthas hilgendorfi 10.2%, Amyntha agrestis 5.4%, A. koreanus group 26.3%, Drawida sp 1.6%, Others 22.6% in the sewer.
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[특집]바이오에너지(바이오디젤,바이오 에탄올) 생산과 보급 활성화 추진정책
나영은 유기성자원학회 2010 유기물자원화 Vol.18 No.3
The Presidential Committee has prepared and released the National Green Growth Development Stategy, a long-term policy blueprint and roadmap, for the period up to 2050, as well as the Five-Year Plan for Green Growth for the years up to 2013. Korea's green growth policies pursue the following objectives mitigiation of, and adaptation to, climate change: achievement of energy independence: creation of new growth engines: improvement of the people's quality of lofe; and, enhancement of Korea's international contribition. Among those objectives, energy independence is the most difficult project. Korea has been dependent on imported crude oil for transport fuels. In order to overcome the dependency of transport fuel on foreign countries, our govement began to invest on the develoment and deployment of biodoesel and biethanol. The other driving force is on the development of fostering biofuel is on the development of mitigation measure of green house gases(GHGs). Biofuel is friendly environmental fuel because it emitsless air pollutants. This study aims at providing policies that our government has prometed about the development and distribution of biodiesel and bioethanol. The future policy direction is proposed regarding current profile and obstacles of biofuel promotion. The govement has been promoting"the long-term plan of biodoesel distribution" 2007." action pans for wastes and biomass energy" in 2009.
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나영은,한재현,여종석 한국진공학회 2017 Applied Science and Convergence Technology Vol.26 No.4
Graphene, with a carrier mobility achieving up to 140,000 cm2/Vs at room temperature, makes it an ideal material for application in semiconductor devices. However, when the metal comes in contact with the graphene sheet, an energy barrier forms at the metal-graphene interface, resulting in a drastic reduction of the carrier mobility of graphene. In this review, the various methods of forming metal-graphene covalent contacts to lower the contact resistance are discussed. Furthermore, the graphene sheet in the area of metal contact can be cut in certain patterns, also discussed in this review, which provides a more efficient approach to forming covalent contacts, ultimately reducing the contact resistance for the realization of high-performance graphene devices.
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나영은,방혜선,김명현,김민경,노기안,이정택,안용준,윤성탁,Na, Young-Eun,Bang, Hae-Son,Kim, Myung-Hyun,Kim, Min-Kyoung,Roh, Kee-An,Lee, Jung-Taek,Ahn, Young-Joon,Yoon, Seong-Tak Korean Society of Soil Science and Fertilizer 2007 한국토양비료학회지 Vol.40 No.4
The toxicitiy of organic sludge such as municipal sewage sludge (MSS), industrial sewage sludge (ISS), alcohol fermentation processing sludge (AFPS) and leather processing sludge (LPS) were evaluated with three environmental biomarkers as acetylcholinesterase, cytochrome P450, and heat shock protein 70 extracted from earthworm (Eisenia fetida). Their toxicities were compared with those of pig manure compost (PMC). MSS, ISS, LPS, and AFPS did not significantly affect the acetylcolinesterase activity, whereas only the elutriate of PMC slightly was increased the activity. MSS, AFPS, and PMC tended to slightly inhibit the cytochrome $P_{450}$ activity, but ISS and LPS showed significantly the inhibitory effect on cytochrome $P_{450}$. The hsp70 expression began to increase after treatments and showed high induction at 6 hour, followed by zero level at around 12 hour. The quantity of the hsp70 expressed by elutriate treatments of PMC, AFPS, MSS, ISS, and LPS was 1.9, 3.0, 3.3, 4.4, and 4.7 fold higher than that of distilled water. These results indicate that in toxicity tests of five organic waste materials, four kinds of sludge materials appeared more toxic than PMC. Results of AChE, P450, and hsp70 of earthworm might be useful for expecting or assessing an effect by exposure of organic wastes to earthworms in soil.
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