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김동민,Kim, Dong-Min 한국상하수도협회 1977 水道 Vol.9 No.-
이글은 76년11월13일 열린 본협회 제4차 정기총회에 앞서 기념강연회에서 있었던 서울산업대학 위생공학과장 김동민 교수의 강연내용을 간추린 것이다.
김동민,노병언,허정훈,이욱교,양성찬,이동규 한국곤충학회 2018 Entomological Research Vol.48 No.5
Adult mosquito surveillance was conducted from 2013 through 2014 at four cattle sheds, a wild bird refuge, and two residential areas located in Gyeongnam Province in the Republic of Korea. Adult mosquitoes were collected in black light traps from April 1, through November 30. Mosquito surveillance was conducted to figure out population densities of vector mosquitoes, possibly invaded mosquitoes and identify various virus infections at the selected sites. A total of 107,466 females comprising 14 species and 7 genera were collected from 2013 to 2014. The most common species collected were Culex tritaeniorhynchus Giles (63.8%), Anopheles sinensis s.l. (18.9%), Aedes vexans nipponii (Theobald) (7.7%), and Culex pipiens Coquillett (5.1%). Trap indices (TIs) varied widely for species over their range, due to geographical distribution and degree of association with rural and urban communities. The most collected An. sinensis s.l. and Cx. tritaeniorhynchus appeared at a cow shed in Hapcheon (TI 347.5) and a pigsty in Daejeo‐1‐dong, Busan (TI 1,040.8), respectively, due in part to their situation near breeding sites such as rice paddies. The bi‐weekly population densities for mosquito species were variable for each of the years, apparently as a result of variable annual weather conditions. None of the mosquito species collected tested for the flavivirus including Japanese Encephalitis Virus, West Nile Virus, Dengue Virus, and Zika Virus infections by polymerase chain reaction (PCR) assay were positive.
AHP를 통한 미래 국방정책 수립 및 추진의 우선순위 분석
김동민,배관표 광운대학교 방위사업연구소 2023 선진국방연구 Vol.6 No.1
미래 국방은 인구감소로 인해 현재와 같은 대규모 병력을 유지할 수 없다. 이에 따라 군은 병력 규모의 축소에 따른 전투력 공백을 방지하기 위해 4차 산업혁명 기술을 적극 활용한 첨단과학기술군 건설을 위해 노력하고 있다. 즉, 양 중심의 병력집약적 군에서 질 중심의 기술집약적 군으로 군사력 건설과 운영의 패러다임이 바뀌는 것이다. 이러한 변화는 기존 국방정책의 효과가 유효하지 않게 만들거나 상대적 중요도의 변화를 요구할 것이다. 본 연구는 이러한 관점에서 AHP 분석을 활용하여 미래 국방환경 아래 상대적으로 우선 요구되는 국방정책을 분석하였다. 이는 미래 군사력 건설과 운용의 패러다임 변화에 따라 한정된 자원의 효율적 배분과 활용, 그리고 정책 비중에 따른 합리적 의사결정이 필요하다고 보았기 때문이다. 분석 결과, 미래 국방은 과학기술의 적극적인 도입과 활용이 중요하며, 이를 효과적으로 운용하기 위한 정책의 수립이 우선 요구되었다. 또한, 첨단과학기술군 건설을 위해서는 무기체계와 같은 전력 요소와 이를 운용할 수 있는 여건을 마련하는 정책을 우선하되, 우수 인력의 획득과 이들이 역량을 효과적이고 효율적으로 발휘할 수 있는 정책 또한 중요하게 요구됨을 알 수 있다.
수중의 전기장이 폐수처리 효율에 미치는 영향 : -혐기성반응을 중심으로- -Focused mainly on anacerobic process-
박수용,김동민 서울市立大學校 1989 論文集 Vol.23 No.-
Electric Potential Effects to the Efficiency of Piological Wastewater Treatment-Focused Mainly on Anaerohic Proclss. An experimental study was conducted to conform an hypothesis that the introduction of direct electric current into mixed liquor in anaerobic reactor might stimulate the metabolic activity of anaerobic bacterial cells. Complete-mix type anaerobic reactors with effective volume of 3.5L were used in this experimental study and were operated by semi-continuous mode. In the 1st stage experiment, direct current with 10 and 5volt were applied intermittently for 30 seconds in every 30 minutes. In the 2nd stage experiment, D.C.electric field applied was 5 volt and also intermitent for 30 seconds in every 5 minutes and in every 30 minutes Control reactor was run in the same operational condition to separate the effect of electrical stress from other environmental factors. Synthetic wastewater was used as feed for both of the control and the test reactors. As a result of this experimental study electrical stress applied intermitently in anaerobic reactor was proved to be effective in that substrate removal rate was increased by 30% or more, and anabolic activity of bacterial cell was increased.
김동민,정숙인,이훈철,이상진,Kim, Dong-Min,Jung, Sook-In,Lee, Hun-Chul,Lee, Sang-Jin 한국재료학회 2015 한국재료학회지 Vol.25 No.7
A low thermal expansion ceramic, cordierite ($2MgO{\cdot}2Al_2O_3{\cdot}5SiO_2$), was synthesized using pyrophyllite. Pyrophyllite usually consists of $SiO_2$ and $Al_2O_3$, which are the main components of cordierite. $MgCO_3$ and $Al(OH)_3$ were added in various amounts to pyrophyllite and fired for synthesis and sintering. ${\alpha}$-cordierite crystallized from $1000^{\circ}C$ with mixing of 20 wt% $MgCO_3$ and 1.7 wt% $Al(OH)_3$, and un-reacted cristobalite was also detected with the cordierite. As the temperature was increased to $1400^{\circ}C$, the cordierite yield was gradually increased. Powder compacts of the synthesized cordierite were sintered between $1250^{\circ}C{\sim}1400^{\circ}C$; the sintered samples showed a low thermal expansion coefficient of $2.1{\times}10^{-6}/^{\circ}C$ and typical sintering behavior. It is anticipated that it will be possible to synthesize cordierite ceramics on a mass production scale using the mineral pyrophyllite.