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김병태,Kim, Byung-Tai 한국광학회 2015 한국광학회지 Vol.26 No.2
PZT를 검출기로 사용하는 광음향 분광 측정법으로 고체레이저의 방사양자효율을 측정하였다. 반도체레이저 여기 Nd:S-VAP 레이저에서 레이저가 발진하고 있을 때 약 58.3 %의 양자효율을 얻었다. 방사양자효율의 측정은 레이저 공진기의 최적화를 가능하게 하는 한 방법임을 제시하였다. The radiative quantum efficiency of a solid-state laser was measured by photoacoustic spectroscopy with a PZT as the detector. The radiative quantum efficiency was about 58.3 % for a laser-diode pumped Nd:S-VAP laser under lasing conditions. The measurement of radiative quantum efficiency was presented as an effective method for the optimization of a laser resonator.
溫度變化에 따른 都市固形廢棄物의 堆肥化 過程 比較에 關한 硏究
金丙泰,尹河衍 대진대학교 1993 大眞論叢 Vol.1 No.-
This study was carried out to analysis the degradation rate of the organic materials and the variation of the microorganism population by the temperature changing The object of this study is to suggest foundational data for the application of mechanical composting of urban solid wastes From this study on the comparison of the composting process of urban solid wastes by the temperature changing, the results are as follows 1. In case of the composting index, VS(Volatile Solid), C/N ratio and CO₂evacuation rate in reactor Ⅱ which is aerated with constant aeration rate are higher than reactor I which is autothermal reactor with a constant temperature at 50℃ Microorganism populations of psychrophilic bacteria, mesophilic bacceria and thermophilic bacteria of reactor I are higher than those of reactor II. 2. In case of the degradation of the organic materials, Carbohydrate is degraded actively over 55℃, but lipid and protein are degraded high below 50℃ 3. In first stage of the composting, component of carbohydrate(42.18%) is higher than protein(29.54%) and lipid(19.93%), but component of carbohydrate and lipid decreased during composting because of the high degradation rate. Whereas, component of protein increased because of the low degradation rate.