Comparing and analysing the productivity and the main ingredients of persimmon leaves by cultivars were conducted to improve the quality and productivity of the per-simmon leaf tea. As a result of the survey, Dungsi was decidedly good in growth co-ndition of survival rate, stem diameter and the number of shoots etc. Also , DUngsi had the highest leaf productivity of 567 leaves and the leaf weight of 1.98 kg per one plant after three years of planting . On accounts of productivity, ingredient analysis and panel test etc. we collectively through that Dungsi was the best cutltivar for the persimmon leaf tea.

떫은감의 유통특성 분석을 위하여 주산지인 상주와 청도지방의 감 재배농가 각각 50호씩 총 100호의 농가를 선정하여 '96-'97 2년간 농가 가공 및 유통실태를 조사하였다. 우리나라 감 재배 면적은 최근 4년간 37.9% 증가하였으며 조사 지역인 상주는 같은 기간 약 2배정도 증가하였고 청도는 5.9% 정도 증가하였다. 조사지역별 떫은감의 판매형태는 상주는 시장 판매가 42.0%, 우편주문 판매 17.8%인데 비해, 청도반시의 경우 산지 수집상

The study was carried out to demonstrate the superiority of used packing in view of energy saving and efficiency of mass transfer, comparing with conventional packing. The results are as follows 1. Owing to low pressure drop under high load, 25㎜ NSW-ring, pp. can cause energy saving 2. The unique magnitudes of used packing are as follows C_o=5.78, m = 0.67, n = 0.46 3. Used packing can make high efficiency including energy saving because of low pressure drop per the number of transfer unit. To rate the characteristic of packing, it should be carried out that the measurement of pressure drop per packing height and per the number of transfer unit. This study demonstrated the superiority of used packing by earring out above experiment and could be used as basic reference for design and predicting efficiency of packing tower which is filled with same packing.

The objectives of this study are to examine combustion characteristics of E.V.A. and rubber wastes by fixed-bed incinerator. The results are as follows. Combustion temperature with time rises rapidly, and mass of E.V.A. reduces at short time in E.V.A. combustion. In variation of air-fuel ratio (m), the ideal values of m of E.V.A. and rubber are 2.5, 1.5 respectively. Mixed-waste combustion is more economic than single E.V.A. combustion, because we can get high combustion efficiency (94.0∼99.0%) at 2.0 air-fuel ratio of mixed-waste combustion. Removal efficiencies of SO2 at cooling tower are about 20%. The combustion efficiencies of rubber are over 98.0% according to the experimental conditions.