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대기압 유전체배리어 방전으로 표면처리된 TiO<sub>2</sub> 분말의 광분해 특성
강정아,김윤기,Kang, Jeong A,Kim, Yoon Kee 한국재료학회 2016 한국재료학회지 Vol.26 No.8
In order to reuse the photocatalyst and enhance the photolysis efficiency, we have used atmospheric pressure dielectric barrier discharge (APDBD) to clean and activate $TiO_2$ powder. The photocatalytic activity of the $TiO_2$ powder before and after APDBD treatment was evaluated by the degradation of methylene blue (MB) in aqueous solution. The apparent reaction rate constant of photolysis of the first sample of reused $TiO_2$ cleaned by APDBD improved to a level up to 0.32h-1 higher than the 30 % value of the initial $TiO_2$ powder. As the number of photolysis reactions and APDBD cleanings increased, the apparent rate constants gradually decreased; however, the fourth photolysis reaction still showed a value that was greater than 10% of the initial value. In addition, APDBD treatment enhanced the process by which $TiO_2$ effectively adsorbed MB at every photolysis stage.
어린이도서관 문화프로그램 유형별 현황 및 운영실태 분석 연구
강정아,노영희 한국비블리아학회 2018 한국비블리아학회지 Vol.29 No.1
This study examines the actual operation status of the Korean children’s library cultural program and analyzes the service type and operation status. Through this, it seeks the direction of cultural programs that can accommodate the needs of the users and establish the identity of the library. This study analyzes 856 kinds of cultural programs found on the homepage of 48 children’s libraries in Korea. It was found that the lecture type programs for elementary school students were operated the most. In addition, most of the students participated one to three times during the lower grades of elementary school by their parents’ recommendation. The satisfaction level of experiential cultural programs was the highest. 본 연구는 국내 어린이도서관 문화프로그램의 운영현황을 조사, 서비스 유형 및 운영실태를 분석함으로써 어린이도서관 문화프로그램의 방향을 모색하는데 있다. 이를 위해 국내 48개 어린이도서관 홈페이지를 통해 조사된 문화프로그램 856종을 유형별로 분석한 결과 초등학령기 대상 강좌형 프로그램이 가장 많았다. 운영실태 분석 결과 참여경험은 초등저학년 시기, 부모 권유에 의해, 1-3회 정도 경험이 가장 많았으며, 만족도는 체험형 문화프로그램이 가장 높은 것으로 나타났다. 따라서 어린이도서관 문화프로그램의 목적 달성을 위한 유형으로는 만족도가 높은 체험형, 참여형 문화프로그램으로, 대상 연령별로는 영․유아부터의 문화프로그램 확대 및 초등학령기까지의 연계성을 충분히 고려하여 좀 더 전략적이고 체계적으로 접근할 필요가 있다. 또한 어린이도서관서비스 자원으로서의 다양한 장서 이용을 활성화 할 수 있도록 주제를 확대하고, 지역특성화 프로그램을 개발, 운영하는 도서관의 독특한 문화적 기능 구현이 중요하다.
강정아,노영희,Kang, Jung A,Noh, YoungHee 한국도서관정보학회 2018 한국도서관정보학회지 Vol.49 No.1
본 연구는 국내 어린이도서관 문화프로그램의 사회적 효과를 측정하여 어린이도서관의 사회적 가치를 제시하였다. 이를 위해 초등학생 511명을 대상으로 설문조사를 실시하여 어린이도서관 문화프로그램의 사회적 효과를 측정하였다. 분석 결과 개인적 영역의 표현력/창의력, 자존감, 즐거움/기쁨/행복과 사회적 영역의 문화예술태도와 문화예술경험변화 및 사회적 상호작용으로 친구관계 증대, 지역커뮤니티 생성과 강화, 지역사회 소속감/공동체성, 지역사회참여 등의 효과가 있는 것으로 나타났다. 이를 근거로 어린이도서관은 어린이의 삶의 질을 향상하고, 사회적 상호작용 역량의 향상, 지역사회 공동체 유지 및 지역커뮤니티 생성과 강화, 지역애착과 지역 활동 참가에 영향을 미치는 중요한 사회자본으로 가치를 가진다고 볼 수 있다. The aim of this study was to assess the social impact of the cultural programs of the children's libraries in Korea and further present the libraries'social value. To this end, we have conducted a survey on 511 elementary school students to assess the social impact of the children libraries'cultural programs. As a consequence, we have ascertained the children's expressiveness / creativity within their personal realms, self-esteem, pleasure / joy / happiness as well as their attitude towards cultural arts and changes in the cultural and artistic experiences further to growth in friendship as a matter of social interaction, generation and strengthening of local communities, sense of affiliation with local community / identify, and local community participation, among the manifestations of the social impact concerned. Based on this, children's libraries can be regarded as an important social capital of the community in the following aspects. Children's libraries enhance the quality of life and children's interaction skills. It also make them feel attached to the local community. Children's libraries maintain local communities, contribute to the creation and strengthening of local communities, and encourage participation in local activities.
노란달걀버섯 균주의 여러 환경 조건에 따른 균사 생장 특성
강정아,김성환,가강현,김준영,윤성탁 한국버섯학회 2019 한국버섯학회지 Vol.17 No.4
The edible ectomycorrhizal mushroom Amanita javanica is a valuable species protected by forest law in Korea. However, basic characterization data on its use as an important forest resource has been limited. This study was performed to determine mycelia growth characteristics of the domestically isolated Amanita javanica strain NIFoS 1267 on potato dextrose agar media under diverse culture conditions. Physical factors temperature, pH, and light, as well as chemical factors salts, heavy metals, and pesticides were examined for their effects on the growth of the mushroom strain. The mycelia of A. javanica strain exhibited optimal growth when cultured in dark at 30oC in media with a pH of 5–6. Normal levels of growth were observed in media containing up to 2% saline. At a heavy metal ion content of 50 ppm, mycelial growth was not affected by arsenic ion but was affected by cadmium and lead ions. In the tests performed with two pesticides used in Korean forests, the growth of the mushroom strain was not affected by the presence of abamectin, but was inhibited in media containing acetamiprid, emamectin benzoate, or thiacloprid. These results are expected to facilitate artificial cultivation of A. javanica as a new commercial product.