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- 저자 : ( Joon Ii Choi ) (검색결과 12 건)
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씨고자리파리에 對한 昆蟲寄生性線蟲 Heterorhabditis bacteriophora의 防除效果
金俊範,崔洙日 又石大學校 1991 論文集 Vol.13 No.-
씨고자리파리, Delia platura(Meigen) 幼蟲, 전용, 용 및 成蟲에 대한 昆蟲寄生性線蟲 Heterorhabditis bacteriophora의 病原性과 施用效果등을 調査하였다. 幼蟲에 대한 病原性은 昆蟲 1個體當 200마리 接種區에서 平均 98.3%가 致死되어 가장 效果的이었다. 線蟲에 感染된 전용은 용화후 93.3%가 致死되어 高度의 有意性이 있었으나, 용태에 따른 病原性은 용화후의 경과 時間에 따라 다르게 나타났다. 용화후 24時間以內의 초기용에서는 15%가 致死되었으나 용화후 48時間이 경과된 후기용에서는 전혀 感染되지 않는다. 成蟲에 대한 病原性은 線蟲 2,000마리 接種區에서 83.3%의 致死率을 보여 가장 높았다. 線蟲의 施用效果는 昆蟲接種前에 線蟲을 撒布한 경우에서 90% 以上의 致死率을 보여 效果的이었으며 種子의 發芽率도 平均 80% 以上이었다. Evaluation of Heterorhabditis bacteriophora on the larvae, prepupae, pupae and adults of the seedcorn maggot, Delia platura(Meigen), were inverstigated under laboratory and pots conditions. Pathogenicity of infective 3rd stage juveniles(L_Ⅲ s) of H. bacteriophora to the larvae of D. platura was the highest at the 200 L_Ⅲ s per insect inoculation(mortality 98.3%). Pathogenicity of L_Ⅲ s to pupae depended upon the age of pupae; 15% of 24hr-old pupae were infected whereas 48hr-old pupae were not infected. Pathogenicity of L_Ⅲ s to adults were highest at the 2,000 L_Ⅲ s per insect inoculation (mortality 83.3%). Control of D. platura larvae in pots containing soybean seeds was effective in the pre-insect treatment in H. bacteriophora (mortality over 90%), the damage of soybean seeds was decreased over 45% by the spray of entomogenous nematodes. Therefore, the H. bacteriophora could be used for biological control of the D. platura.
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Park, II-Kwon,Choi, Kwang-Sik,Kim, Do-Hyung,Choi, In-Ho,Kim, Lee-Sun,Bak, Won-Chull,Choi, Joon-Weon,Shin, Sang-Chul John Wiley Sons, Ltd. 2006 Pest management science Vol.62 No.8
<P>Plant essential oils from 40 plant species were tested for their insecticidal activities against larvae of Lycoriella ingénue (Dufour) using a fumigation bioassay. Good insecticidal activity against larvae of L. ingenua was achieved with essential oils of Chenopodium ambrosioides L., Eucalyptus globulus Labill, Eucalyptus smithii RT Baker, horseradish, anise and garlic at 10 and 5 µL L<SUP>−1</SUP> air. Horseradish, anise and garlic oils showed the most potent insecticidal activities among the plant essential oils. At 1.25 µL L<SUP>−1</SUP>, horseradish, anise and garlic oils caused 100, 93.3 and 13.3% mortality, but at 0.625 µL L<SUP>−1</SUP> air this decreased to 3.3, 0 and 0% respectively. Analysis by gas chromatography-mass spectrometry led to the identification of one major compound from horseradish, and three each from anise and garlic oils. These seven compounds and m-anisaldehyde and o-anisaldehyde, two positional isomers of p-anisaldehyde, were tested individually for their insecticidal activities against larvae of L. ingenua. Allyl isothiocyanate was the most toxic, followed by trans-anethole, diallyl disulfide and p-anisaldehyde with LC<SUB>50</SUB> values of 0.15, 0.20, 0.87 and 1.47 µL L<SUP>−1</SUP> respectively. Copyright © 2006 Society of Chemical Industry</P>
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길준민(Joon-Min Gil),박찬열(Chan Yeol Park),최장원(Jang-Won Choi),박학수(Hark-Soo Park),황일선(II-Sun Hwang) 한국정보과학회 2004 한국정보과학회 학술발표논문집 Vol.31 No.2Ⅲ
본 논문에서는 인터넷에 연결된 수많은 이질적인 컴퓨팅 자원을 모아 하나의 가상 컴퓨팅 플랫폼 환경을 만들 수 있는 국내의 인터넷기반 분산컴퓨팅 플랫폼(일명 Korea@Home)에 대해서 소개한다. 그리고 현재 구축, 운영 중인 Korea@Home 시스템을 중심으로 설계 방향, 분산응용 그리고 성능을 보여주고 앞으로의 연구 방향에 대해서 기술한다.
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최준기 ( Joon-kee Choi ),박희룡 ( Hee-ryong Park ),김영일 ( Young-ii Kim ) 한국고등직업교육학회 2002 한국고등직업교육학회논문집 Vol.3 No.2
As the Internet is supplied and is extended broadly, many appliances are manufactured with Internet ability. But high cost old devices can't connect the Internet. So, general company with old devices is difficult to maintain at the remote places. In this paper, we developed a real-time embedded system using Linux OS. It is able to monitoring and correcting errors of serial old devices on the ethernet. Developed system could be easily controllable and manageable on the Internet environment.
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계단 오르기 시 정강이뼈 돌림이 하지의 역학과 근 활성도에 미치는 영향
강정일 ( Jeong Ii Kang ),이유경 ( Yu Kyung Lee ),박승규 ( Sung Kyu Park ),이준희 ( Joon Hee Lee ),양대중 ( Dae Jung Yang ),최현 ( Hyun Choi ) 한국운동역학회 2011 한국운동역학회지 Vol.21 No.4
This study was performed to investigate the effects of tibial rotation while going up stair on muscle activity of vastus medialis oblique and vastus lateralis, and on patellar displacement. The subjects included 30 people (male: 15; female: 15) who were randomly assigned to the tibial internal-rotation, neutral-rotation, and external-rotation groups, The subjects went up the stair while performing the assigned rotations, and the rotation of the hip and the displacement of the patella were measured using a 3D motion analyzer. In addition, the maximum voluntary isometric contraction (MVIC) of the vastus medialis oblique and vastus lateralis were measured using surface electromyogram. On the tibial internal rotation, the hip rotation significantly appeared in the same direction and so did on the tibial neutral and external rotations (p<.001). Although the MVIC of the vastus medialis oblique and vastus lateralis did not significantly differ by tibial rotation during the stair ascent, the MVIC of the vastus medialis oblique was higher than that of the vastus lateralis during the internal and neutral rotations (p<.05). In addition, during the stair ascent, the displacement of the patella was more significant during the tibial external rotation than during the tibial internal and neutral rotations (p<.001). Thus, patients with patellofemoral pain are required to be considered the effects of tibial rotation for their rehabilitation.
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구희일(Koo, Hee II),최석준(Choi, Seok Joon) 한국소비문화학회 2009 소비문화연구 Vol.12 No.1
본 연구는 가구의 사회·인구·경제적 특성이 가계의 여가소비지출에 어떠한 영향을 미치는지를 파악하고, 이를 토대로 도시지역과 비도시지역 간의 여가소비지출 차이를 분석한다. 분석을 위해 통계청에서 실시한 2005년 가계조사 원자료를 사용하였으며, 여가소비지출총액, 서적 및 인쇄물 구입비, 교양오락용품기구 구입비, 교양오락서비스비용의 네 항목으로 분류하여 최소자승추정법과 토빗모형으로 비목별 지출액을 분석하였다. 본 연구의 분석 결과 서적 및 인쇄물 구입비와 교양오락용품기구 구입비, 교양오락서비스비용에서는 가구주의 직업별로 편차가 크게 나타났고, 가구주의 교육정도에 따른 여가소비지출의 비목별 차이도 상당한 편차가 있는 것으로 나타났다. 또한 주택의 소유여부가 가계의 여가소비지출에 많은 영향을 미치고 있었다. 도시지역과 비도시지역 간 서적 및 인쇄물 차이에 관한 분석 결과를 보면, 비도시지역의 고등학교 수준의 가구와 전문대 이상, 대학원 수준 가구와의 차이가 도시지역의 같은 교육 수준 간 차이보다 더 크게 나타났다. 또한 교양오락용품기구 구입비에서도 비도시지역의 일반가구와 노인가구의 차이가 도시지역의 일반가구와 노인가구의 차이보다 더 크게 나타났다. This study shows that how household’s sociological·demographic·economic characteristics affect its leisure expenditures, and what the difference between the leisure expenditures of urban area and that of rural area is. This analysis was done on four expenditure categories of Total Leisure Expenditure(TLE), Publications and Prints Expenditure(PPE), Culture and Entertainment Goods expenditure(CEG), Culture and Entertainment Service expenditure(CES) using OLS and Tobit Model with data based on a survey by National Statistical Office in 2005. First of all, it tells that householder's occupation makes a big difference on expenditures for PPE, CEG, CES and their education level for leisure expenditures. Also, households’ expenditures on leisure life were up to much whether they have their own houses or not. The result on difference between urban and rural areas for PPE indicates that the difference between the high school level and the college·graduate school level is bigger than its counterparts. Also the difference between ordinary households and elderly households in rural area is bigger than that of urban area for CEG.
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Eum, Gwang-Sik,Kim, Jeong-Gyun,Ha, Yeong-Lae,Park, Chan-II,Kang, Seok-Joong,Choi, Yeung-Joon,Choi, Byeong-Dae The Korean Society of Fisheries and Aquatic Scienc 2009 Fisheries and Aquatic Sciences Vol.12 No.4
A commercial diet supplemented with carotenoids and conjugated linoleic acid was fed to rainbow trout (Oncorhynchus mykiss) for 8 weeks. To investigate the anti-oxidative properties of these compounds, lipids from the muscle and viscera of the fish were subjected to different assays. At $10\;{\mu}g/mL$, L-ascorbic acid exhibited 95% 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical-scavenging activity, while the tissue lipids showed little radical scavenging activity. At 50 and $100\;{\mu}g/mL$, the lipids of the muscles and viscera showed 11.7-22.6% and 11.3-24.9% DPPH radical-scavenging activity, respectively. A lipid peroxidation inhibitory assay using the ferric thiocyanate method was also performed in comparison with $\alpha$-tocopherol at a concentration of 6.0 mg/mL. Our results indicate that the anti-oxidative property of the lipids in fish muscle, which was 85.2% compared to 85.3% for the visceral lipids, was stronger than that of $\alpha$-tocopherol (74.3%) following 3 days of storage at $40^{\circ}C$.
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