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- 저자 : Young-Eun Na(나영은) (검색결과 80 건)
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나영은(Na, Young-eun) 한국언어문학회 2012 한국언어문학 Vol.80 No.-
'스콜라' 이용 시 소속기관이 구독 중이 아닌 경우, 오후 4시부터 익일 오전 9시까지 원문보기가 가능합니다.
The purpose of this paper was to examine the development of Korean middle schcol students' attitude towards writing through a short-term longitudinal study. The subject students were found to have had a positive attitude towards writing in the first grade. Their attitude changed towards the negative direction in the second grade, though, and towards the positive direction again in the third grade. The boys' attitude slightly changed in the third grade, though, and the girls had a more positive attitude than the boys for three years. In the second grade, however, the attitude did not have a statistically meaningful difference according to gender. The students had the most positive attitude towards writing in the cognitive domain and the most negative attitude towards writing in the affective domain.
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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
4 종류의 폐기물(생활하수오니, 공단하수오니, 피혁오니, 주정오니)과 대조구로서 돈분퇴비가 지렁이에게 미치는 독성을 평가하기 위하여 대표적인 유해성 평가 biomarker 3종류 (acetylcholinesterase, cytochrome $P_{450}$, heat shock protein 70)를 사용하였다. 유기성 폐기물에 대한 acetylcholinesterase의 활성은 돈분퇴비의 경우 활성이 약간 촉진된 반면 생활하수오니, 공단하수오니, 피혁오니, 주정오니는 영향을 미치지 않았다. Cytochrome $P_{450}$의 활성은 공단하수오니와 피혁오니는 활성을 억제하였고 생활하수오니, 주정오니, 돈분퇴비는 영향을 미치지 않았다. 또한 Hsp70의 발현량은 증류수보다 돈분퇴비는 1.9배, 주정오니는 3.0배, 생활하수오니는 3.3배, 공단오니는 4.4배, 피혁오니는 4.7배 순으로 지렁이 (Eisenia fetida)에게 스트레스를 많이 주었다. 이상의 결과로부터, 4 종류의 폐기물(생활하수오니, 공단하수오니, 피혁오니, 주정오니)은 돈분퇴비보다 독성이 강한 것으로 판단하였다. 또한 AChE, Cytochrome $P_{450}$과 Hsp70은 추후 유기성 폐기물의 유해성을 모니터링하기에 적합한 biomarker로서 가치가 있다고 생각한다. 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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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
2000년 7월 10일부터 8월 3일까지 전국의 퇴비더미 37개, 야초더미 56개, 농촌하수구 15개에서 1525개체의 지렁이를 채집하여 동정하였다. 조사기간 동안 채집된 지렁이는 3과 4속 6-8종이었으며 종 구성은 다음과 같다. 퇴비더미에서 서식하는 지렁이는 줄지렁이 (Eisenia fetida) 86.2%, 참지렁이 (A. koreanus group) 6.3%, 밭지렁이 (Amyntha agrestis) 2.8%, 외무늬지렁이 (Amynthas hilgendorfi) 1.1%, Drawida sp. 1.7%, 갈색낚시지렁이 (Aporectodea trapezoides) 0.5%, 기타 종이 1.4%, 야초더미에서 서식하는 지렁이는 참지렁이 (A. koreanus group)가 27.8%, 밭지렁이(Amyntha agrestis) 25.1%, 외무늬지렁이 (Amynthas hilgendorfi) 12.1%, 줄지렁이 (Eisenia fetida) 9.8%, 갈색낚시지렁이(Aporectodea trapezoides) 9.1%, Drawida sp. 2.8%, 기타 종 13.2%,또한 농촌하수구에서 서식하는 지렁이는 참지렁이 (A. koreanus group) 26.3% . 줄지렁이 (Eisenia fetida) 24.2%, 외무늬지렁이 (Amynthas hilgendorfi) 10.2%, 갈색낚시지렁이 (Aporecrodea trapezoides) 5.4%, 밭지렁이 (Amyntha agrestis) 5.4%, Drawida sp. 1.6%, 기타 종은 22.6%로 조사되었으며, 향후 조사된 이들 종들에 대한 섭식 능력과 기능을 평가하여 여러 분야에 활용 할 수 있을 것이다. 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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경험담 분석을 통한 쓰기 태도 형성 파악 : 정서 요소를 중심으로
나영은(Na Young-eun) 국어교육학회 2011 국어교육연구 Vol.48 No.-
The purpose of this study is to describe the favor and disfavor experience that forms the attitude. For this study, I analyzed the stories of 150 learners' writing experience in first grade of middle school by using the qualitative research methods and verified the experiences that effected on the writing attitude separated by the before and after of school age period. For the writing learning in the before of school age, the attitudes toward teaching and reinforcement of educator, literacy environment and birth order in the family and others effected on the writing attitude of learner. For the writing learning in the after of school age, the dissatisfaction for the forced writing represented to the diary writing, social reinforcement and others effected on the writing attitude of learner. I should prepare the teaching method that can reinforce the favor affect and relief the disfavor affect.
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연구보문 : 생태환경 ; 유기성폐기물과 밭토양에 대한 붉은줄지렁이와 밭지렁이의 섭식 전후의 분변토 발생량 및 오염물질의 함량 변화
나영은 ( Young Eun Na ) 한국환경농학회 2015 한국환경농학회지 Vol.34 No.2
지렁이는 토양의 물리화학성 변화에 중요한 역할을 한다. 본 연구는 밭토양과 유기성폐기물에서 지렁이의 분변토 발생량 및 오염물질(중금속, PAHs)의 변화 특성을 밝히고자 하였다. 지렁이 종류에 따라 분변토 발생량을 비교하면, 밭토양에서는 붉은줄지렁이 생체무게 1 g에 평균 1.41 g의 분변토를 만든 반면에 밭지렁이는 1 g에 평균 0.40 g의 분변토를 만들었고, 유기성폐기물에서는 붉은줄지렁이 생체무게 1 g에 주정슬러지 분변토 0.78 g, 과즙슬러지 분변토 0.83 g를 각각 만든 반면에 밭지렁이는 모두 죽어서 분변토를 얻지 못했다. 중금속이 분변토 발생량에 미치는 영향을 조사한 결과, 붉은지렁이의 분변토량은 대조구와 비교해서 아연이 0.1~0.8배, 구리가 0.2~0.5배, 카드뮴이 0.1~0.7배 감소했다. 밭지렁이의 분변토량은 아연이 0.3~1.1배, 구리가 0.2~0.3배, 카드뮴이 0.1~2.1배 감소했다. 지렁이 섭식 전후의 중금속과 PAHs의 함량 변화을 분석한 결과, 유기성폐기물(주정슬러지, 과즙슬러지)에 대한 붉은줄지렁이 분변토의 중금속(Zn, Cu, Cd) 함량은 지렁이가 섭식전 슬러지보다 0.7~53.3%까지 증가했다. PAHs의 함량은 주정슬러지에서 1,465㎍kg-1에서 731㎍kg-1로 50.1%가 감소했다. 과즙슬러지도 2,249㎍kg-1에서 1,423㎍kg-1으로 36.6%가 감소했다. 따라서 이러한 결과들은 향후 유기성폐기물 처리 및 오염토양 복원에 있어서 지렁이 종류 선택 및 처리방법에 대한 연구에 도움이 될 것으로 기대된다. BACKGROUND: Earthworms are essential detritus feeders that play a vital role in the process of decomposition of organic matter and soil metabolism. The complex process of partial breakdown of organic matter and mixing with mucous and gut microbial flora in the form of earthworm cast results in the reduction of the toxicity. This study focused on the change of cast amount and pollutant contents before and after the eating of the organic waste and upland soil with the two species of earthworm. METHODS AND RESULTS: The two species of earthworms were compared to the cast production. In the upland soil material, the daily amount of worm’s cast was 1.42 g in E. andrei and 0.40 g in A. agrestis. In the organic waste material, the cast of E. andrei was 0.78~0.83 g and the cast of A. agrestis. have not been collected because all earthworms died after the treatment. The heavy metals treated in the upland soil were evaluated the impact of the worm excretion. With the E. andrei, the cast production was decreased 0.1~0.8 times in zinc, 0.2~0.5 times in copper, and 0.1~0.7 times in cadmium compared to the control treatment according to the levels of concentration. With A. agrestis, the cast amount was decreased 0.3~1.1 times in zinc, 0.2~0.3 times in copper, and 0.1~2.1 times in cadmium, respectively. The changes of pollutant contents before and after the eating of the organic wastes with E. andrei were studied. In the treatment of the Alcohol Fermentation Processing Sludge and the Fruit Juice Processing Sludge, heavy metal content of the cast was increased 0.7~53.3% compared to the sludge materials. PAHs contents were decreased 50.1% in the cast of the Alcohol Fermentation Processing Sludge and 36.6% in the cast of the Fruit Juice Processing Sludge, respectively. CONCLUSION: In conclusion, although the A. agrestis was bigger than E. andrei in size and weight, the cast amount of A. agrestis was small. The two species of earthworm was less excretion with high concentration of heavy metals. While the heavy metals such as zinc, copper, and cadmium were considerably accumulated in the cast, the total compounds, PAHs were fairly decomposed. There results would provide us for restoring contaminated soil and cleaning organic wastes.
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