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최경구,최영곤,김하윤,김주식 한국공업화학회 2014 한국공업화학회 연구논문 초록집 Vol.2014 No.1
PKS(Palm Kernel Shell)는 리그닌이 풍부한 바이오매스로 lignocellulosic biomass로 구분된다. 이러한 특성으로 인해 PKS는 열분해 시 상대적으로 phenol 및 phenolic compounds가 풍부한 bio-oil을 생산할 수 있다. Phenol은 formaldehyde와 함께 혼합되어 plywood용 resin의 주 원료이며 phenolic compounds도 같은 역할울 할 수 있다. 기존의 phenol은 화석연료로부터 얻어지기 때문에 최근의 여러가지 환경문제와 에너지고갈 문제가 대두됨에 따라 대체 source 개발이 시급하다. 이러한 배경으로 PKS로부터 얻어진 bio-oil은 대체 source로써 많은 관심을 받고 있다. 본 연구에서는 bench scale의 유동층 반응기를 사용하였으며 bio-oil은 cyclone 및 bag filter를 통과한 vapor가 quenching system을 통해 급속 냉각되어 얻어졌다. Plywood용 resin 생산은 기존의 commercial resin과 다른 조건없이 물리적으로 섞어 사용하였다. 마찬가지로 Plywood는 기존의 plywood 생산공정과 동일한 조건에서 만들어졌으며, 압축강도를 측정하여 물성을 확인하였다. 이 결과로 bio-oil이 plywood용 resin 생산 공정에서 phenol을 대체할 수 있는지 알아볼 수 있었다.
栽培地域에 따른 大豆品種別 播種基가 收量性에 미치는 影響
崔京求,權湧周,金鎭基,愼鏞圭,陳星桂,盧承杓 전북대학교 농업과학기술연구소 1980 農大論文集 Vol.11 No.-
To study the adaptation of some soybean cultivars and the suitable sowing date in the Jeonbug area, field experiments were made at 3 sites (Jeonju,Jinan and Jangsu) in 3 growing seasons(early sowing, ordinary sowing and late sowing), Yields and some agronomic characteristics were investigated obtaining the following results. 1. Emergence required longer period in the early sowing (May 25) than the ordinary sowing(June 10) or the late sowing (lune 25)which required the shortest period. No difference was found among varieties in the same sowing date. 2. Number of days from sowing to flowering decreased with a delayed sowing date. The rate of shortened period of time was found in Jangsu, Jinan and Jeonju in increasing order. 3. A delayed sowing date decreased stem length, stem thickness, number of nodes in the main culm, number of pods in the main culm and 100-grain weight showing remarkable de-creases among indeterminate varieties. 4. Seed yield also decreased with a delayed sowing date. 5. The highest yield was found in indeterminate varieties such as Williams or Hill in early or ordinary sowing in Jeonju. However, Kwang-kyo or Suweon #83 gained the better yields in late sowing. 6. In hilly areas (Jinan or Jangsu) determinate varieties, such as Kanglim, Suweon #83 or Kwang-kyo, gained comparatively high yields in any sowing date.
崔京求,金準采,張永男 전북대학교 농업과학기술연구소 1992 農大論文集 Vol.23 No.1
Effects of growth regulators, 2, 3, 5-triiodobenzoic acid(TIBA), abscisic acid(ABA)and 2·-chloroethylphosphonic acid(Ethrel) on growth and yield of soybean (Jangkyoungkong and Paldalkong ) were investigated at the different growth stages. The result were as follows ; Application of the growth regulators reduced stem length, but increased in stem diameter, number of nodes and seeds per plant, and yield. Out of three growth regulators, TIBA was most effective in growth and yield. Optimum treatment for growth was three- times spraying at the interval of 7days after 6-leaf stage of soybean plants. The highest soybean yield was obtained from three - times application of TIBA done after 6-leaf stage. Effects of the regulators was greater with Jangkyoungkong(indeterminate type) than with Paldalkong(determinate type) .