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광합성 박테리아 및 담체를 이용한 하천의 저농도 질소, 인 처리 시스템 개발
김선정,이상섭,Kim, Sun-Jung,Lee, Sang-Seob 한국미생물학회 2010 미생물학회지 Vol.46 No.1
저농도 유기물, 질소, 인 제거를 위하여 독립영양 미생물인 광합성 박테리아를 이용한 회분식 실험 결과 초기값 $COD_{Cr}$ 37.3 mg/L, $NH_3$-N 4.0 mg/L, $PO_4^{3-}$-P 1.0 mg/L (C:N:P=100:10:1) 일 때 각각 87.4%, 46.3%, 79.7% 제거효율을 보였다. 혼합 광합성 박테리아, 세라믹 담체 및 담체 KSP01을 적용한 폭기식 반응기 실험 결과, 평균 유기물 72.7%, 암모니아성 질소 79.2%를 제거하였으며, pH 조절로 인산염 인을 최대 92.6%까지 제거할 수 있었다. 반응기 내 다양한 폭기 조건에서 암모니아성질소 제거를 확인한 결과, 1, 2 반응조에 10.2 L/min로 공기를 주입하였을 때 98.5%로 높은 제거효율을 보여주었다. 또한 하천수 적용시 암모니아성 질소 82.8%의 높은 제거효율을 확인하였다. 본 연구를 통하여 개발된 정화 시스템의 현장 적용시 저농도 질소, 인의 높은 제거를 보일 것으로 사료된다. We used phototrophic bacteria to remove low concentrated organic materials (CODCr), nitrogen and phosphorus. We applied $COD_{Cr}$ 37.3 mg/L, $NH_3-N$ 4.0 mg/L, and $PO_4^{3-}-P$ 1.0 mg/L (C:N:P=100:10:1) in the batch test, and the removal efficiencies were shown as follow: $COD_{Cr}$ 87.4%, $NH_3-N$ 46.3%, $PO_4^{3-}-P$ 79.7%. The aerobic process with mixed phototrophic bacteria, ceramic media, and media KSP01 showed the removal efficiencies of $COD_{Cr}$, $NH_3-N$, and $PO_4^{3-}-P$, each as 72.7% and 79.2%, respectively in the lab-scale reactor. The maximum $PO_4^{3-}-P$ removal efficiency reached 92.6% by adjusting pH. There were three conditions used to remove $NH_3-N$. The highest removal efficiency was 98.5% with 10.2 L/min of aeration in 1-2 reactors, and the result of applying river-water showed the high removal efficiency of $NH_3-N$ (82.8%). Therefore, this purification system may be useful to control nitrogen and phosphorus at low concentration in field.
Pseudomonas aeruginosa AJ1에 의한 Microcystis aeruginosa의 성장제어
김선정,이상섭,Kim, Sun-Jung,Lee, Sang-Seob 한국미생물학회 2009 미생물학회지 Vol.45 No.4
대청호의 한 지류인 소옥천으로부터 고효율 조류억제 세균을 분리하기 위하여 176균주를 분리 스크린하였으며, 이 중 AJ1이 가장 높은 조류성장억제능을 나타내었다(지름 50.0 mm 성장억제환). 조류성장억제능이 높았던 AJ1 균주 동정을 위하여 형태학적, 생리 생화학적, 16S rRNA gene sequence 분석, 지방산 분석을 수행하였으며 그 결과, Pseudomonas aeruginosa 로 판별되었다. AJ1 배양액을 원심분리한 후 상등액을 조류배양액에 첨가 시, 상등액에 의한 조류성장억제능이 나타남에 따라 세포 외 물질 분비에 의한 것을 확인할 수 있었다. 가장 높은 조류성장억 제능[60.2(${\pm}$1.3)%]은 탄소원으로 mannitol을 사용하고, 온도 $30^{\circ}C$, pH 8에서 배양할 때 보였다. 또한, AJ1 균주의 배양기간 및 투여시기에 따른 조류성장억제능 평가 결과, 조류 성장 초기 단계에 조류성장억제균을 투여하였을 때 조류성장억제능이 높게 나타났고, 균주의 배양기간에 따른 조류성장억제능은 연관성이 나타나지 않았다. 상등액 접종량에 따른 조류성장억제능은 상등액의 접종량이 높아질수록 M. aeruginosa의 제거량은 증가하였으며, 고농도(40ml/L)로 적용하였을 때 80.3(${\pm}$8.6)%의 가장 높은 M. aeruginosa 제거효율을 보여주었다. 제거 속도의 경우 상등액 접종량이 낮아질수록 M. aeruginosa 제거율이 높아지는 경향을 확인하였으며, 저농도(10 ml/L)로 적용시 $8.2{\mu}g$ chl-a/supernatant ml/day로 가장 높게 나타났다. 본 연구 결과, AJ1 균주의 현장 적용 시 M. aeruginosa의 제어에 효율적일 것으로 사료된다. Among total 176 strains with antialgal effects isolated from So-ok stream in Korea, Pseudomonas aeruginosa AJ1 showed the highest removal efficiency for an algal species Microcystis aeruginosa (clear zone of diameter 50.0 mm on algal lawn after 20 days). The algal growth was suppressed even when the supernatant of AJ1 culture was applied, suggesting that extracellular substances are responsible for its antialgal activity. The removal activity of AJ1 was optimal under the following condition: pH 8, $30^{\circ}C$, and mannitol as a carbon source. The antialgal activity of AJ1 appeared to be dependent of the growth phase of M. aeruginosa, i.e., the highest at the early phase, but not its own phase. As expected, the algicidal effect was improved as the amount of the treated supernatant was increased; the highest removal efficiency (80.3%) was achieved when 40 ml/L of the supernatant was used. Interestingly, however, the removal rate was opposite. The highest removal rate ($8.2{\mu}g$ chl-a/ml supernatant/day) was achieved when low concentration (10 ml/L) was applied. These results suggest that P. aeruginosa AJ1 is a promising biological agent to control the problematic algal bloom.
김선정(Kim Seon-Jung),김성수(Kim Sung-Su) 한국외국어교육학회 2006 Foreign languages education Vol.13 No.2
Recognizing the importance of culture in language learning, this paper suggests a cultural education through the use of Korean proverbs. Proverbs not only reflect how people think and live, they also cover various themes. Korean language learners have difficulties in understanding Korean proverbs because they contain elements of Korean culture. Korean language learners should be systematically educated in proverbs to effectively communicate with Koreans, as well as to better understand Korean culture. Therefore, it is essential to study how to teach them effectively, and a cultural education textbook based on this study will have to be published. Proverbs education methods have focused on understanding. We will focus on expression education as well as understanding education. This type of textbook will offer a chance to easily learn korean proverbs by providing an interesting format. The aim of this paper is to demonstrate the best direction for teaching Korean proverbs, and to present a lesson as a model about their education.
프로 스포츠팀 브랜드연상의 구성요인이 브랜드태도와 구매의도에 미치는 영향 : 스폰서십 후원의 시사점
김선정(Kim Sun Jung),조병량(Cho Byung Lyang),한상필(Han Sang Pil) 한국옥외광고학회 2011 OOH광고학연구 Vol.8 No.2
본 연구는 프로 스포츠팀 브랜드연상의 구성요인이 브랜드태도와 구매의도에 미치는 영향을 검증하는 목적으로 실시되었다. 연구결과 프로 스포츠팀 브랜드연상의 구성요인은 혜택, 팀 특성, 후원기업, 팀 구성원, 팬 동일시로 나타났고, 프로 스포츠팀 브랜드연상의 구성요인이 브랜드태도에 영향을 미치는 것으로 나타났으며, 프로스포츠팀 브랜드연상의 구성요인은 구매의도에도 영향을 미치는 것으로 나타났다. 본 연구의 시사점은 국내를 대표하는 프로리그의 프로 스포츠팀을 대상으로 브랜드연상의 구성요인을 제시하였다는 점과 프로 스포츠팀 브랜드연상이 브랜드태도와 구매의도에 미치는 영향력을 통하여 구단을 관리하고 후원하는 데 보다 도움이 될 수 있는 기반을 마련하였다는 점이다. The purpose of this study was to verify how the components of brand association of professional sports teams impact on brand attitude and purchase intention. This study showed the following three results. First, exploratory factor analysis was made to extract components of brand association of professional sports teams. As the result of the analysis, the components turned out to be such factors as benefit, team play characteristics, corporate sponsor, team members, and fan-identification. Second, hierarchical regression analysis was verified the impacting components of professional sports teams brand association on brand attitude. Third, hierarchical regressive analysis was verified the impacting components of brand association on purchase intention. Purchase intention was divided into sponsor purchase intention and team purchase intention. In conclusion, this study suggested total components and components by professional sports fields of brand association of representative sports teams in the nationwide professional team sports leagues. It also suggested that total components and components by professional sports fields of brand association are different in accordance with how professional sports teams brand association affect brand attitude and purchase intention. For this reason, this study provided grounds that could help managements to manage and sponsor their professional sports teams more effectively.
장애아동의 치료 시 자세에 따른 물리치료사의 허리 근육 활성도 변화
김선정(Kim Seon Jeong),이주상(Lee Ju Sang),정지운(Jung Jee Woon),이형진(Lee Hyung Jin) 대한치료과학회 2016 대한치료과학회지 Vol.8 No.2
To evaluate the waist muscle activity changes depending on the distance of the child with disabilities and physical therapist. Method: we were classified in physical therapist treatment posture when the child with disabilities lying down, sitting, and standing. And classified posture measured the erector spinae muscle activity. The muscle activity was analyzed using one-way ANOVA. Results: The average of right erector spinae muscle activity is, Lying=48.82 ± 9.95 %, Sitting=39.01 ± 8.73 %, was a Standing=29.54 ± 6.90 %(p<.05). The average of left erector spinae muscle activity is, Lying=47.85 ± 8.85 %, Sitting=39.74 ± 8.68 %, was a Standing=30.50 ± 7.84 %(p<.05). Conclusion: In order to improve the working environment of physical therapists need to devise a way to increase the height of the treatment units. Therapists need to be encouraged to keep themselves right back erected posture.