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박노학,Rohak Bak Korean Chemical Society 1973 대한화학회지 Vol.17 No.6
Durch hydrothermale Behandlung wurde das Mineral Duttonit von einem rosafarbenen 4-wertigenvanadin Aquoxid($VO_2{\cdot}H_2O$) synthesiert und davon wurden Einkristallu gezuchtet. Das monokline hydroxid kristallisiert in der Raumgruppe $C_2/c$. Es befinden sich vier formeleinheiten in der Einheitszelle. Die Abmessungen der Elementarzelle betragen; a = 8.78 ${\AA}$; b = 3.94 ${\AA}$; c = 5.95 ${\AA}$; ${\beta}=90^{\circ}$41'. $V_2O_5$를 $SO_2$로 환원해서 얻은 $VO_2{\cdot}H_2O$를 수열 처리하여 (250$^{\circ}C$, 3200atm) 처음으로 자연에 존재하는 두토니트 $VO(OH)_2$가 결정 상태로 합성되었다. 한 Einheitzell에 4개의 Formeleinheit가 존재하고 Raumgruppe $C_2/c$인 monoklin 수산화물의 격자 상수는 다음과 같다. a=8.78${\AA}$, b=3.94${\AA}$, c=5.95${\AA}$, ${\beta}$=90$^{\circ}$41' 따라서 이미 알려진 $VO{\cdot}H_2O$는 다른 조성과 구조를 가진 화합물로 인정된다.
박인석,박노학,천현숙,Park, In-Seok,Park, No-Hak,Chun, Hyun-Sook 한국주거학회 2014 한국주거학회 논문집 Vol.25 No.2
The revision of regulations for apartment unit design, which are concerning the area calculating criteria (revised in 1998) and use of balcony (revised in 2005), considerably have increased livable space of apartment unit. This paper aims to verify its effect to apartment unit plan in the aspect of number of rooms and size of each room. For this purpose, 60 and 85 $m^2$ sized apartment unit plans in Seoul Gangnam district have been analysed by construction period, and a conclusion is drawn out as following; (1) The revison of regulations in 1998 and 2005 increased livable space of 60 and 85 $m^2$ sized apartment about 16.4~20.6 $m^2$ area. (2) Bedrooms, living room, dining room and kitchen have no change in size in nominal sense, actually, they increase their size after the fact by converting balcony to livable space. (3) Bathroom, dress room and entrance space have been considerably increased in size, which is possible for available area added in place of wall footprint according to 1998 revision.