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In 과 Sb 의 첨가가 Tin Oxide 가스센서에서 Resistivity 와 Sensitivity 에 미치는 영향
손영목,한상도,김종원,심규성 ( Y . M . Son,S . D . Han,J . W . Kim,K . S . Sim ) 한국센서학회 1992 센서학회지 Vol.1 No.1
To determine the effect of additions of trivalent and pentavalent ions on the electrical conductivity and sensing behaviour, indium and antimony were incorporated in tin oxide by the coprecipitation method. Antimony may be considered to enter the cassiterite structure as pentavalent ions, thermal energy could excite electrons from these ions into the conduction band. Similarly the indium ions would enter the lattice as In^(3+) but could accept electrons from the valence band, thereby becoming monovalent or divalent. These phenomena, however, how the potential barrier existing SnO₂ by addition of two kinds of ions could influence on the sensing behaviour in comparison with their influence on the resistivity were observed.
한국산 (韓國産) 퉁가리속 어류의 1신종 퉁사리 ( Liobagrus obesus )에 관하여
손영목,김익수,주일영 ( Yeong Mok Son,Ik Soo Kim,Il Young Choo ) 한국하천호수학회 1987 생태와 환경 Vol.20 No.1
Liobagrus obesus n. sp. from the K n-river, Korea, is described as a new species. This species is characterized by larger head width, larger body depth, I, 7 pectoral rays, 3-5 feeble teeth at the spine of pectoral fins, 64-67 caudal rays, and equal jaws. The present species is distributed only in the Ungch`o^˘n-river and middle part of Ku^˘m -river in Korea, and prefers pool regions than rapids.
The Effects of Additions of In & Sb on Resistivity & Sensitivity in Tin Oxide Gas Sensors
손영목,한상도,김종원,심규성,Son, Y.M.,Han, S.D.,Kim, J.W.,Sim, K.S. 한국센서학회 1992 센서학회지 Vol.29 No.3
3가와 5가 이온의 첨가가 전기전도도 및 감응도에 어떤 영향을 미치는가를 확인하기 위하여, In와 Sb를 Tin Oxide에 공침법으로 첨가하였다. Sb는 5가 이온으로 cassiterite 구조에 들어가서 열에너지에 의하여 이들 이온을 여기시켜 전도대로 밀어올리리라고 여겨진다. In 이온은 결정격자 속에 $In^{3+}$로 들어가서 원자가대로 부터 전자를 받게 되고 그러므로써 1가나 2가가 되리라 생각한다. 그러나, 이러한 현상들이 $SnO_{2}$에 존재하는 전위장벽을 2종의 이온첨가에 의하여 일어나는 resistivity에 끼치는 영향과 비교해 볼 때 감응도에는 어떤 영향을 보이는지 고찰하였다. To determine the effect of additions of trivalent and pentavalent ions on the electrical conductivity and sensing behaviour, indium and antimony were incorporated in tin oxide by the coprecipitation method. Antimony may be considered to enter the cassiterite structure as pentavalent ions, thermal energy could excite electrons from these ions into the conduction band. Similarly the indium ions would enter the lattice as $In^{3+}$ but could accept electrons from the valence band, thereby becoming monovalent or divalent. These phenomena, however, how the potential barrier existing $SnO_{2}$ by addition of two kinds of ions could influence on the sensing behaviour in comparison with their influence on the resistivity were observed.
한국산 퉁가리속 ( genus Liobagrus ) 어류의 생태
손영목,주일영 ( Yeong Mok Son,Il Young Choo ) 한국하천호수학회 1988 생태와 환경 Vol.21 No.4
L. andersoni and L. mediadiposalis preferred the rapids with high water velocity but L. obesus abounded in the rapids with low water velocity or in the pools. In the Kum-river where L. mediadiposalis and L. obesus inhabit together, the former occupied the higher or middle parts while the latter occupied the middle part. In the contact zones they showed mosaic distribution pattern of the microhabitat by occupying the rapids and pools respectively. Length-frequencies in these populations indicate that total length of 40-60 mm fish group is a yearling, 70-100 mm is two-year-old, longer than 110 mm is regarded as being over three-year-old. These fishes feeding mainly on aquatic inscts started spawning at the age of two, and the spawning period was from early May to late June when the water temperature reaches 20-25℃