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全燦穆,權重培,申鍾學,河基柱 慶一大學校 1996 論文集 Vol.13 No.2
In this study, nine reinforced concrete infilled frames involved bare frames were tested during vertical and cyclic loads simultaneously. This test programs were carried to investigate the horizontal strength and the crack propagation in variance with hoop reinforcement ratio. All specimens were modeling in one-third scale size. In this experimental program structural performance of reinforced concrete shear wall were focus at connection types. Based on the test results, the following conclusions are made. (1) In fully rigid frame, increasing the ratio of hoop bar 2∼3 times on the basis of its ratio of in column(p??=0.196%). The horizontal strength of specimen did not varied, but the increased ductility of specimens were showed greatly at the final failure. (2) In the boundary column menber of reinforced concrete shear wall, increasing the ratio of hoop bar in two or three times, in the fully babel type, the shear and horizontal strength of specimens were increased 1.1-1.2 times than that of fully rigid frame. And infilled shear wall specimen were increased 1.17-1.27 times than that. (3) Fully rigid babel type shear wall specimens were increased 5.7∼8.0 times, and infilled shear wall specimens were increased about 4.0∼5.6 times in comparision with the full rigid frame.
남효훈,권중배,이중환,손창기,서영진 한국자원식물학회 2019 한국자원식물학회지 Vol.32 No.1
This study was conducted to establish a domestic cultivation system of a newly introduced yam bean(Pachyrhizus erosus L.). Growth and yield were investigated in response to various cultural practices, such as seedlingraising, planting distance, pinching, and flower pruning. Optimum conditions for raising of seedling were an averagetemperature of 22℃ for 30 days. Considering of the raising efficiency and the convenience of transplanting, 128 cells pertray was a suitable size. When pinching at a height of 120 ㎝ from late July to early August, yield increased by 22%compared to no pinching. Flower pruning between late August and early September increased the number of tubers andtuber yield by 32% in comparison with no flower pruning. Yam bean seedlings planted at 50 ㎝× 30 ㎝ spacing resulted in30% yield increase as compared to wider spacing of 100 ㎝× 30 ㎝. Our results thus suggested that the optimal combinationof cultural practices (50 × 30 ㎝ planting distance, pinching at 120 ㎝ height, and one time of flower pruning) increaseprofitability by 107%. All these results suggest high possibility of yam bean as a new income crop in Korea. 새롭게 도입된 얌빈의 국내 재배기술 확립을 위하여 육묘조건, 적심, 적화, 재식밀도 등의 재배요인에 의한 생장과 수량반응을 조사한 결과는 다음과 같다. 얌빈은 P.E. 하우스내에 전열온상을 설치하여 평균 22℃로 유지하여 30일(적산온도 650℃)육묘하면 건전묘 생산이 가능하였다. 트레이 규격에 따른 출현특성의 차이는 없으며, 셀 크기가 클수록 묘 생장량이 증가하지만 육묘효율, 이식작업의 편의성을 고려하여 128공 트레이가 적합하였다. 7월 하순에서 8월 상순에 120 ㎝ 높이에서 적심을 하면 수량이 23% 가량 많아지며 8월 하순에서 9월 상순 사이에 적화를 하면 괴경수와 괴경중이 증가하여 수량이 32% 가량 많아진다. 50 ㎝×30 ㎝로 정식하였을 때 관행 100 ㎝×30 ㎝보다수량이 30% 증가하였다. 적심, 적화, 재식밀도 최적조합처리는무처리에 비해 경제적으로 107%의 이익적인 요소가 발생하였다. 이상의 연구 결과 얌빈의 최적 재배기술 적용을 통해 국내에서 새로운 소득 작목으로서 유망할 것으로 판단된다.
마(Dioscorea opposita)에 발생한 Japanese yam mosaic virus 진단 및 염기서열 분석
이중환,손창기,권중배,남효훈,김영태,김미경,이수헌 한국식물병리학회 2016 식물병연구 Vol.22 No.4
We surveyed the occurrence of Japanese yam mosaic virus (JYMV) on Yam in Gyeongsangbukdo pronvince from 2013 to 2015. The symptoms of JYMV were yellow stripes and chlorosis in yam leaves and the infection rate was ranged from 33.6% to 40.8%. We determined nucleotide sequence encoding the polyprotein of JYMV isolate BRI from yam leaves using next-generation sequencing (NGS) method. The partial nucleotide portion (7,736 nucleotides) of the genomic RNA of the JYMV isolate BRI has been sequenced (accession No. KU309315). The region sequenced includes a single open reading frame (ORF) encoding a polyprotein composed of 2,497 amino acids containing the coat protein (CP) and 3’ untranslated region (UTR). The genomic organization of this isolate shows almost the same to that of other members of JYMV. The JYMV isolate BRI showed 77% to 79% nucleotide identity with the Japanese and Chinese strains and isolates. This is the first report of the genome nucleotide sequence of JYMV from Dioscorea opposita in Korea.