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정병문,김현지,이상홍,Jung Byung-Moon,Kim Hyeon-Ji,Lee Sang-Hong 한국주거학회 2005 한국주거학회 논문집 Vol.16 No.6
The purpose of this study is to get preeminent data from comparative analysis of multi-family housing unit plans between Korea and China nowadays. Even though Korea and China belong to common cultured band in Asia, there are many different Housing aspects and unit plans. Through this study we want to grasp the characteristics of both nation's apartment unit plans and to contribute for advance into the China apartment market. Analysis target is constructing and lotting out apartment at South Korea and China in 2004, and the space syntax model is used as an analysis tool. First, analyze kind, number and special quality of each room by use area, and second, analyze area and scale of the rooms. Through the integration analysis we know the grade of rank and centrality of each rooms, and search difference of South Korean and Chinese apartment.
Bifidobacterium infantis Maeil-K9 균주의 당 발효 특성 및 항생제 내성을 이용한 선택배지 개발연구
정병문,김응률,정후길,전호남 한국미생물학회 2004 미생물학회지 Vol.40 No.1
현재 상업적으로 이용되고 있는 비피더스균인 Bifidobacterium lactis Bb-12, Bif. longum Bb-536 및 Bif. infantis Maeil-K9의 선택적 계수를 위한 선택배지 개발을 위하여 다양한 탄소원과 질소원 및 여러 항생제들에 대한 내성을 검토하였다. 탄소원의 경우 기본생육배지에 각각 15 g/L 수준으로 첨가하여 각균주의 생육성을 비교해 본 결과 amygdalin과 fructose가 가장 적합하였으며, 질소원의 경우 tryptone이 가장 적합한 것으로 나타났다. Amygdalin을 탄소원으로 이용한 경우 Bif. lactis Bb-12와 Bif. infantis Maeil-K9의 생육성이 우수하였으며, fructose를 이용한 경우 Bif. longum Bb-536의 생육성이 우수하였다. 항생제 내성 검토에 있어서는 doxycyclin을 1 mg/L 수준으로 첨가하는 것이 가장 적절하였으며, Bif. lactis Bb-12및 Bif. infantis Maeil-K9의 생육에는 전혀 영향을 주지 않았으나, Bif. longum Bb-536의 생육은 완전히 억제시켰다. 그리고 저 활성 균주에 대한 각 선택 배지의 검출능을 알아보기 위하여 각균주를 -$70^{\circ}C$, $4^{\circ}C$, $40^{\circ}C$에 2주간 보존 후 생균수를 측정한 결과 amygdalin을 탄소원으로 이용한 배지에서는 $40^{\circ}C$ 보존균주의 검출능이 낮았으나, fructose를 탄소원으로 이용한 배지와 doxycyclin을 첨가한 배지의 경우 그 선택성이 매우 우수하였다. To differentiate commercial bifidobacteia for Bifidobacterium lactis Bb-12, Bif. longum Bb-536 and Bif. infantis Maeil-K9, we studied the various carbon source, the nitrogen sources and antibiotics. Amygdalin and fructose were good candidates for carbon sources, and tryptone was suitable for nitrogen sources to design a new selective media for three commercial bifidobacteria. In the case of the amygdalin-containing medium as carbon sources, Bif. lactis Bb-12 and Bif. infantis Maeil-K9 showed good growth, and in fructose-containing medium, Bif. longum Bb-536 showed good growth. In antibiotics resistance study, the addition of 1 mg/L doxycyclin was very effective for differentiation of each bifidobacteria. Doxycyclin did not affect the growth of Bif. lactis Bb-12 and Bif. infantis Maeil-K9, but Bif. longum Bb-536 was completely inhibited by doxycyclin. Finally to confirm the selection capability of newly designed selective media, temperature-shocked bifidobacteria were cultured on them. As the results, fructose or doxycyclin containing medium showed for high growth for temperature-shocked bifidobacteria, but amygdalin containing medium showed low growth of temperature-shocked bifidobacteria.