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성 pheromone에 의한 이화명나방의 교미교란에 관한 연구
이정운,박중수,고현관,김정한,전종갑,Lee J.O.,Park J.S.,Goh H.G.,Kim J.H.,Jun J.G. Korean Society of Applied Entomology 1981 한국식물보호학회지 Vol.20 No.1
성 pheromone을 이용한 이화명나방의 교미교란효과를 구명하고저 합성 성 pheromone, (Z)-11-hexadecenal과 (Z)-13-octadecenal을 4,5 : 1로 공시하여 본 시험을 야외에서 수행한 결과 1화기에는 30a당 합성성 pheromone 29.3g 처리한 구에서 $90.4\%$의 교미교란효과가 인정되었고 2화기에는 $20m^2$당 합성 성 pheromone 33mg 처리까지도 교란효과가 있었다. Mating confusion of the Striped Rice Borer with its synthetic sex pheromone, a mixture of (Z)-11-hexadecenal and (Z)-13-octadecenal in a ratio of 4.5 : 1, was estimated during the first and second generation in rice field near Suweon. The mixture was highly disruptive to pheromonal communication between males and females. The orientation behavior of male moths toward the females was confused at a dosage of 29.3g per 30a during the first generation and even at 33rr.g per $20m^3$ during the second generation.
방사성 동위원소 $^{32}P$를 이용한 멸구류에 대한 품종저항성 검정방법에 관한 연구 (II)
이정운,김용헌,박중수,Lee Jeong Oon,Kim Yong Heon,Park Joong Soo,Lippold P.C. 한국응용곤충학회 1981 한국식물보호학회지 Vol.20 No.3
멸구류에 대한 수도품종 저항성 검정방법을 개발하고저 방사성 동위원소 $^{32}P$를 이용하여 본 시험을 수행하였다. 전편에서 얻어진 결과를 활용하여 멸구별, 멸구충태별, 접종시간별 벼멸구 흡즙량 차이와 품종별 벼멸구 흡즙량을 조사한 바 다음과 같은 결과를 얻었다. 가. 벼멸구, 흰등멸구, 애멸구 순으로 $^{32}P$ 흡즙량이 많았으며 암컷이 숫컷보다 공시멸구류 모두 흡즙량이 많았다. 나. 벼멸구의 각태별 흡즙량은 성충, 5령충, 성충), 4령 순으로 많았으며 충접종시간은 접종 24시간$\~$48시간에서는 일정한 흡즙령을 나타냈다. 다. 벼멸구의 벼품종별 흡즙량은 저항성 품종인 밀양 47호에서는 839 CPM인 반면 감수성 품종인 TN 1에서는 88,603 CPM을 나타 내었다. 따라서 본시험에서의 검정방법과 유묘집단검정방법과는 일치하였다. New screening method of varietal resistance by isotope $^{32}P$ was examined in these experiments. Insects were fed for 24 hrs. in the vials, with rice seedlings absorbed the solution if $0.6\~7{\mu}\;Ci\;^{32}P$ for 24 to 48 hrs. Feeding amounts of 3 species of plant-hoppers at the different stages and duration of infestation were investigated for effective process of screening method of the varietal resistance using isotope $^{32}P$. Feeding amount of $^{32}P$ of brown plant-hopper was observed for the different varieties. The results may be summarized as follows: 1. Brown planthopper fed greatest and the feeding amount were increased in order of white-backed planthopper and small brown planthopper. Female hoppers fed more than male. 2. Feeding amount was increased in order of adult, 5th instar, adult, 4th instar, 3rd instar 2nd instar and 1st instar. The duration of $24\~48\;hours$ is considered sufficient for insect infestation. 3. New screening method by $^{32}P$ was compared with seedling bulk screening method in view of feeding amount and plant reaction. Feeding amount of $^{32}P$ by brown planthopper in Milyang 47, resistant variety to this insect, was very low, while in TN 1, susceptible variety, it was very high about one hundred tines of Milyang 47.
방사성동위원소 $^{32}P$를 이용한 멸구 류에 대한 품종저항성 검정방법에 관한 연구(I)
이정운,김용헌,박중수,석순종,고현관,Lee J. O.,Kim Y. H.,Park J. S.,Seok S. J.,Goh H. G. 한국응용곤충학회 1981 한국식물보호학회지 Vol.20 No.2
멸구류에 대한 품종저항성 검정법을 개발하고자 동위원소 $^{32}P$를 이용 식물체를 통하여 충체에 이행된 $^{32}P$ 방출량을 G.M. Counter로 조사하므로서 저항성 정도를 판별하기 위한 연구중 일차적으로 다음과 같은 결과를 얻었다. 가. 공시기구 개발 : 공시기구 개발을 위해 4가지 형의 기구를 공시하였는데 B,C,D형 기구는 공시법과 $^{32}P$ 용액과 분리된 시험기구로서 이중 D형이 가장 취급이 간편하며 안전하게 $^{32}P$의 흡즙량을 조사할 수 있었다(Fig. 1). 나. $^{32}P$의 적정량 : 식물체에 흡수시킬시 2Ml 까지 비슷한 경향을 보였으나 흡즙시간의 경과에 따라서 $^{32}P$용액을 식물체가 흡수하여 차츰 적은 량으로 되어 뿌리의 활력에 따라서 개체간 흡수량의 차이가 생길 우려가 있어 $2\~3ml$의 $^{32}P$용액이 요구되었다. 의. $^{32}P$의 방사능 세기 : $0.07\~7{\mu}Ci$까지는 충체에 미치는 영향이 없었으며 처리별로 각각 충분한 CPM의 방사능을 나타내었기에 $0.7{\mu}Ci$ 내외의 방사능 세기가 멸구류 검정시 효과적으로 본다. 라. 충표식방법 및 충탈피각내 잔류량 : :식물성의 흡수를 통한 표식이 효과적이었으로 충탈피각내에는 잔류량이 거의 없는 것으로 나타났다. The screening method of varietal resistance on the plant hoppers has generally been evaluated as a reaction of plant after infesting insects. However, feeding amount of insects to the varieties was investigated in this experiment. The new method using isotope $^{32}P$ for rice varietal resistance to plant hoppers was carried out through the following method. Insects tested were caged for a few hours on the plants which had absorbed $^{32}P$ solution in small vials for $24\~48\;hours$. After feeding, insects were killed in the refrigerator with formalin solution, and then were measured by the feeding amount as a count per minute (CPM) with the G.M. Counter. The results obtained were summarized as follows; 1. The apparatus of Type D(Fig. 2) was most effective and the safest among four others. 2. The optimum amount of $H_3PO_4$ solution was found to be $2\~3m1$. 3. Radioactivity of $0.7\mu\;Ci.\;^{32}P$ was sufficient to check varietal difference of feeding amount by the brown planthopper. 4. Radioisotope was found from the body of insects but not in the cuticular layer nymphs cast off.
이정운,이기효,문옥륜,Lee, Jung-Un,Lee, Ki-Hyo,Moon, Ok-Ryun 대한예방의학회 1991 예방의학회지 Vol.24 No.3
The purpose of this paper is to identify factors affecting the optimum mix of required inputs and other relevant factors which account for the variation in physician's productivity in general hospitals, and to find out their implications for the efficient health planning and management. An extended version of Cobb-Douglas production function and cross sectional data of one day patient census from all general hospitals in Korea in 1988 were used in the analysis. Main results of the analysis and their implications could be summarized as follows : (1) The production function for physician's inpatient service shows the evidence of economies of scale, but the production function for physician's outpatient and adjusted-patient service, which combines both out- and in-patient service, shows that of dis-economies of scale. (2) The physician's role for production for all service is smaller than auxiliary personnel's, which imply that more intensive utilization of nurses, nursing aides and other auxiliary personnel is desirable for improving general hospital productivity (3) In case of physician's inpatient and adjusted-patient service, nurses' role is greater than nursing aides'. Therefore, more extensive utilization of nurses is recommended for the efficient operation of general hospitals. (4) The factor of hospital beds plays the leading role among required inputs in the production for physician's in- and adjusted-patient service. (5) The physician's productivity of general hospitals in rural area is lower than that in urban area. And the productivity of teaching hospitals is lower than that of the other hospitals. Further analysis was made in physician production function based upon the size of hospitals, namely those hospitals below 250 beds and those above. Explained variances by the factor of hospital beds was significantly increased in the case of those hospitals above 250. A more detailed and thorough investigation is needed for verifying factors influencing physician's productivity in general hospitals in Korea.