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한식 잔반처리를 위한 호기성 미생물의 분리 및 그 분해효과
김광현,김지연,이광배 동의대학교 기초과학연구소 2000 基礎科學硏究論文集 Vol.10 No.1
For the treatment of Korea food-wastes, three mesophilic and one thermophilic bacteria were isolated from soil and fermented fertilizers. The thermophilic Streptomyces sp. strain WF021 produced two enzymes which were a protease and a lipase at 55℃. The mesophilic Bacillus sp. strain WF024 produced four enzymes which were a protease, a lipase, a amylase and a cellulase when the strain was grown both at 30℃ and 55℃. The Bacillus sp. PY123 had produced three enzymes which were a protease, a cellulase and a lipase at 30℃. The Bacillus sp. strain CM1 produced three enzymes which were a protease, a amylase, and a cellulase at 30℃. The bacteria were grown in media containing 6% NaCl at least and did not have antagonism each other. The four isolates treated much more food-wastes than referance strains did. In a flask without aeration, three reference strains treated 15.4% of food-wastes, while four isolated treated 23.7% of food-wastes. In a flask with aeration, food-wastes were treated 67.3% by four isolates, and 64.3% by three reference strains, but 53.9% without bacteria. However, food-wastes were treated about 78% in a 200ℓ-reactor made by Siwon Co., while 65.8% in a 20ℓ-reactor made by Sanyo Co.
김영순,임지혜,배현주 한국문화교육학회 2011 문화예술교육연구 Vol.6 No.2
The aim of this study was to search conditions activating the regional consortium for regional culture education in schools. Results of this study are follows: the regional consortium consists of parents of students, communities, schools, school boards, public institutes, and NGO groups. The consortium contribute the educational support and development for student activities in schools. Furthermore the consortium make an offer to coordinate and facilitate the delivery of information, resources, and services to students, educators, employers, and the community. Therefore, the consortium might be best described as "matchmakers" that help ensure that our customers are able to easily connect with providers of the services they need. The consortium will be made up of a network of service providers from across its region that all collaborate in helping to connect the local education and school communities. 본 연구에서는 지역 사회의 인적·물적 자산을 활용한 문화적 체험활동 교육이 활성화되고 정착되기 위한 방안으로 학교와 지역사회가 밀접한 관계를 형성할 수 있는 지역협의체를 구성하는 안을 제시하였다. 이를 위해 지역문화교육에 필요한 지역협의체에 대한 문헌연구를 수행하였고, 이와 유사한 실제 사례를 찾아 관련 전문가를 대상으로 한 심층인터뷰 결과를 정리하고 시사점을 도출하였다. 연구결과, 지역협의체는 지역특수성, 전문성, 개방성, 공공성, 지속성의 기본원칙을 전제로 하여 교육행정기관, 지자체 행정기관, 민간 및 공공기관, 학교 등의 협력을 통해 구성될 수 있다. 또한 지역에서의 문화적 체험활동의 효율적인 운영을 지원하기 위해 1) 지역사회 내 교육기부 협력기관을 모색 및 발굴·연계, 2) 지역의 교육 인프라 접근성 향상, 3) 지역의 문화 교육 자원 간 네트워크 확장, 4) 지역 내 긍정적인 담론 형성을 위한 홍보 및 인식 개선, 5) 지역문화교육 프로그램 수행 과정의 성찰 등의 역할을 수행해야 한다. 지역협의체를 통한 학교와 지역교육자원의 연계 방안은 교육자원의 유형과 교육운영 주체에 따라 분류될 수 있었고, 강동구청과 대구광역시교육청의 예를 통해 지역문화교육 지원의 구체적인 사례를 살펴볼 수 있었다. 이와 같이 본 연구에서 제안한 지역협의체의 구성은 지역문화교육의 활성화를 위한 초석을 마련해 줄 것이라고 기대해 본다.
Neuroprotective effect of Galla Rhois to scopolamine-induced cognitive impairment in mouse
Ji Won Park,Ji Eun Kim,Yusang Choi,Young Ju Lee,Jun Young Choi,Jin Ju Park,Mi Rim Lee,Hye Ryeong Kim,Bo Ram Song,Mi Ju Kang,Dae Youn Hwang,Su Ji Bae,Jun Go,Hyeon Jun Choi 한국실험동물학회 2019 한국실험동물학회 학술발표대회 논문집 Vol.2019 No.1
마이크로웨이브 소결시간이 지르코니아 수복물의 3점 굴곡강도와 색조에 미치는 영향
강지혜(Ji-Hye Kang),유경민(Kyung-Min Yu),이지현(Ji-Hyeon Lee),송다연(Da-Yeon Song),이정수(Jung-Soo Lee),김지환(Ji-Hawn Kim),배은정(Eun-Jeong Bae) 대한치과재료학회 2018 대한치과재료학회지 Vol.45 No.3
In this study, we tried to confirm clinically applicable applicability by comparing the difference in 3 point flexural strength and shade of the prosthesis depending on microwave sintering time of dental CAD / CAM zirconia. 3 Point flexural strength specimens (n=30) and shade measurement specimens (n=28) were prepared and sintered at different sintering times. 3 point flexural strength and shade were measured and analyzed by independent t-test (α=0.05). Measurement result of 3 point flexural strength the average of short-term sintering (STS) was 245.47±29.89 MPa, the average of long-term sintering (LTS) was 284.27±31.56 MPa, and there was a statistically significant difference (p<0.05). The shade measurement result ⊿E*<SUB>ab</SUB> showed the average STS of 1.51±0.48 and the LTS of 1.52±0.41, but there was no statistically significant difference (p>0.05). The 3 point flexural strength of the zirconia restorations fabricated by short time and long time was high in long time sintering. However, other conditions may be required for clinical applications. Since the shade test did not show any significant color difference according to sintering time, it is considered to be sufficient for clinical application.
Sex hormones establish a reserve pool of adult muscle stem cells
Kim, Ji-Hoon,Han, Gi-Chan,Seo, Ji-Yun,Park, Inkuk,Park, Wookjin,Jeong, Hyun-Woo,Lee, Su Hyeon,Bae, Sung-hwan,Seong, Jinwoo,Yum, Min-Kyu,Hann, Sang-Hyeon,Kwon, Young-Guen,Seo, Daekwan,Choi, Man ,Ho Nature Publishing Group 2016 NATURE CELL BIOLOGY Vol. No.
<P>Quiescent satellite cells, known as adult muscle stem cells, possess a remarkable ability to regenerate skeletal muscle following injury throughout life. Although they mainly originate from multipotent stem/progenitor cells of the somite, the mechanism underlying the establishment of quiescent satellite cell populations is unknown. Here, we show that sex hormones induce Mind bomb 1 (Mib1) expression in myofibres at puberty, which activates Notch signalling in cycling juvenile satellite cells and causes them to be converted into adult quiescent satellite cells. Myofibres lacking Mib1 fail to send Notch signals to juvenile satellite cells, leading to impaired cell cycle exit and depletion. Our findings reveal that the hypothalamic-pituitary-gonadal axis drives Mibi expression in the myofibre niche. Moreover, the same axis regulates the re-establishment of quiescent satellite cell populations following injury. Our data show that sex hormones establish adult quiescent satellite cell populations by regulating the myofibre niche at puberty and re-establish them during regeneration.</P>