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AHP분석을 이용한 마이크로크레딧 창업 성공요인 측정항목의 상대적 중요도와 우선순위분석
김기만,김종진,박주영 한국창업학회 2018 한국창업학회 Conferences Vol.2018 No.1
이 연구의 목적은 AHP분석을 이용한 마이크로크레딧 창업 성공요인 측정항목의 상대적 중 요도와 우선순위분석이다.
상압소경에 의해 제조된 DyNbO<sub>4</sub> 소결체의 미세조직과 파괴특성
김기만,안종관,이병택 한국분말야금학회 2002 한국분말재료학회지 (KPMI) Vol.9 No.3
The microstructures and indentation fracture of pressureless-sintered $DyNbO_4$ crystalline were investigated as a basic study for the application of weak phase of fibrous monolithic composites. They were comprised with many lamella twins as well as micro-cracks at the grain boundaries. The hardness at room temperature was remarkably low value(575 Hv) due to the low relative density and existence of microcracks at grain boundaries. The main fracture mode was a typical intergranular fracture, and showed remarkable micro-cracking effect. The heavy plastic deformation was observed around the site of indentation. In addition, the $DyNbO_4$ was expected to apply as a weak phase in the fibrous monolithic composites because of the low hardness and easily plastic deformation that could be led the preferable pulled-out and microcracking toughening under the failure.
Release Characteristics of Terbutaline Sulfate Sustained-Release Beads In Vitro
김기만,김영일,홍순억,Kim, Ki Man,Kim, Young Il,Hong, Soon Uk Korean College Of Clinical Pharmacy 1991 한국임상약학회지 Vol.1 No.1
The sustained-release beads containing terbutaline sulfate (TBS) were prepared by rotogranulation method. The drug was dusted on the non-pareil seeds in a CF-granulator. The sustained-release beads were obtained by coating the active beads with ethylcellulose or $Eudragits^{(R)}$, using in any case the same granulator employed for active beads preparation. The release characteristics of sustained-release beads were examined in vitro by rotating basket method applied to $Bricanyl^{(R)}$ durules which is a sustained-release TBS matrix tablet. The release of terbutaline from the beads in vitro was first-order, and the release rate was dependent on both the coat weight ratio and membrane hydrophilicity. Both surfaces of the beads before and after dissolution were smooth. The drug release pattern from the beads could be thought the diffusion through the polymer membrane. The release rate and the surface of the beads stored for 3 years at room temperature were the same with those of the initial beads.
태양열을 이용한 메탄의 수증기 개질 반응기 연구Part 1. 수증기 개질 반응에서의 최적 반응 조건 탐색
김기만,강용혁,한귀영,남우석 한국태양에너지학회 2005 한국태양에너지학회 논문집 Vol.25 No.4
The reaction of steam reforming of methane with commercial catalysts was conducted for thermochemical heat storage. The reaction conditions were investigated for temperature range of 700 to 900 ℃ and steam to carbon mole ratios between 3.0 and 5.0. The reactor was made of stainless steel and it's dimension was 12 cm inside diameter and 6cm long. The effects of space velocity and reactants mole ratio and temperature on the methane conversion and CO selectivity were examined. Optimum reaction condition was determined. There was not a significant difference of methane conversion and CO selectivity compared to conventional reactor.