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RISS 인기검색어
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- 저자 : 최광호(Choi, Kwang-Ho) (검색결과 289 건)
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A stydy on The Biological Control of Sciarid Fly(Lycoriella sp.) Using Bacillus thuringiensis
최광호,박현철,박현우,진병래,강석권,손흥대,Choi, Kwang-Ho,Park, Hyean-Cheal,Park, Hyun-Woo,Jin, Byung-Rae,Kang, Seok-Kwon,Sohn, Hung-Dae 한국생명과학회 1996 생명과학회지 Vol.6 No.4
Thirteen subspecies of Bacillus thuringiensis including B. t. israelensis, B. t. morrisoni PG-14 and B.t. darmstadoemsos known to be toxic to dipteran insects were treated on the mushroom (Flammulina velutipes) compost to estimate the biological control effect of a sciarid fly, Lycoriella sp. According to the results, it was found that there were no significant effects of the tested strains of B, thuringiensis on the control of Lycoriella sp. For further confirmation, larval gut juice of Lycoriella sp. and trypsin were respectively treated into the parasporal crystal proteins of three subspecies of B. t. israelensis, B. t. morrisoni PG-14, and B. t. darmstadiensis. The proteins were separated by SDS-PAGE. According to the results, the major parasporal crystal proteins were respectively produced by B. t. morrisoni as the amount of 52 kd, B. y. israelensis as 37kd and B. t. darmstadiensis as 39kd, but the activity of these proteins could not be unfortunately confirmed in this study.
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최광호,권대현,Choi, Kwang-Ho,Kwon, Dae-Hyeon 해양환경안전학회 2011 해양환경안전학회지 Vol.17 No.4
We investigated the biological characteristics of the squid, Todarodes pacificus Steenstrup through the samples caught monthly in the Yellow Sea($32^{\circ}$ 30'N, $122^{\circ}E-37^{\circ}$ 30'N, $127^{\circ}E$) from 1985 to 1987. Monthly mantle length frequency were separated into Autumn spawning group and winter spawning group with Tanaka's method(1956) to determine the main group of the squids caught in the Yellow Sea. The ratio of winter spawning group was higher than that of autumn spawning group. Monthly gonadosomatic index of females increased on July in 1985, on October in 1986, and October in 1987 and decreased later in each year. That of males increased on June in 1985, on July in 1986, and June in 1987. The length of 50% group maturity of female was 20.7 cm mantle length(ML) in 1985, 17.9 cm ML in 1986, and 17.2 cm ML in 1987. The ratio of female was higher than that of male in the group over 24 cm ML, and the ratio of male was higher than that of female in the group under 24 cm ML. We concluded that the length of 50% group maturity of squids was affected by the density of the population status. 1985년부터 1987년까지 황해 $32^{\circ}$ 30'N, $122^{\circ}E-37^{\circ}$ 30'N, $127^{\circ}E$ 해역에서 오징어채낚기어업으로 어획된 살오징어($Todarodes$ $Pacificu$s Steenstrup)를 매월 1회 채집하여 생물학적 특성치를 조사하였다. 황해에서 어획된 살오징어의 주 발생군을 판단하기 위해 Tanaka(1956)의 방법을 사용하여 가을과 겨울발생군으로 분리하였다. 겨울발생군의 비율이 가을발생군의 비율보다 높았다. 생식소 숙도지수(GSI) 월변화에서 암컷은 1985년에는 7월에, 1986년에는 10월에, 1987년에는 8월에 최고값을 나타낸 후 감소하였다. 수컷은 1985년에는 6월에, 1986년에는 7월에, 1987년에는 6월에 최고값을 보였다. 암컷의 50% 군성숙체장를 분석한 결과 1985년에는 외투장(ML) 20.7 cm, 1986년에는 17.9 cm, 1987년에는 17.2 cm로 나타났다. 암수비율은 ML 24 cm 이상 체급에서는 암컷의 비율이 높았으며, 24 cm 미만 체급에서는 수컷의 비율이 높았다. 살오징어의 군성숙체장은 개체군 상태에 의해 영향을 받는 것으로 판단된다.
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경추 회전제한 검사 결과에 따른 근전도 신호 변화: 증례보고
최광호,이소민,정의민,권오상,이영준,정지연,Choi, Kwangho,Lee, Somin,Jerng, Ui Min,Kwon, O Sang,Lee, Young Jun,Jung, Jeeyoun 턱관절균형의학회 2016 턱관절균형의학회지 Vol.6 No.1
FCST의 턱관절 불균형 진단은 검사자 및 환자의 주관에 의존하여 이루어지기 때문에 객관적인 진단 방법에 대한 고찰이 필요하다. 본 증례에서는 FCST 진단 방법 중 경추회전제한 검사에 대한 객관적인 검증 방법으로 표면 근전도 측정이 가능성이 있음을 관찰하였다. We investigated the potential of electromyography (EMG) for diagnosing imbalance in the temporomandibular joint (TMJ) to apply functional cerebrospinal therapy (FCST). The electromyography signals were measured in the sternocleidomastoid muscle (SCM) in patients with temporomandibular disorder (TMD) while a FCST specialist conducted a restricted cervical rotation test. In addition, we also observed the changes in the electromyography signals according to pre-treatment or treatment with a TMJ balancing appliance (TBA), a customized TMJ balancing appliance (CBA), or a CBA with one paper bar. The right SCMs of the two patients with right TMJ imbalance had high EMG signals in the right cervical rotation test, while the left SCMs showed low EMG signals in the left rotation. In addition, the high EMG signals in the right SCMs decreased when using the TBA or the CBA, but the EMG signals of the left SCMs showed low EMG values during the treatments. Furthermore, the EMG signals of the right SCMs rose again after artificial imbalance of the right TMJ by the CBA with one paper bar. This case report demonstrated the potential of EMG as an objective diagnostic method for FCST.
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철골 보 - 철근콘크리트 기둥 접합부의 휨 및 전단 저항성능에 관한 연구
최광호,Choi, Kwang Ho 한국강구조학회 2000 韓國鋼構造學會 論文集 Vol.12 No.4
철골 보와 철근콘크리트 기둥으로 구성된 복합 시스템은 철골과 철근콘크리트 간에 재료적인 단점을 보완함으로써 구조 효율성과 시공 생산성을 높이는 이점을 가지고 있다. 이 연구는 철골 보에 현장 타설 철근콘크리트 기둥을 간편하게 접합시킬 수 있는 복합구조 시스템을 개발하고, 그 시스템의 휨 및 전단 저항성능을 시험을 통하여 규명하는 것을 목적으로 하고 있다. The composite system, which is consisted of the steel girder and reinforced concrete column has some advantages in the structural efficiency and the construction productivity by complementing the shortcomings between the two materials. This research is aimed at the development of the composite beam-column connection system by which the steel beam can be connected to the R/C column with smooth stress transfer. And, to ensure safety of this system, the tests of moment and shear resisting performance have been carried out for actual size specimen. From the test, the connection system has been preyed to take good resistance and stress transfer between steel girder and reinforced concrete column.
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최광호,Choi, Kwang-Ho 한국환경영향평가학회 2011 환경영향평가 Vol.20 No.2
Causing by green house gas emission, global warming is being accelerated significantly. This global warming cause world climate to change quiet different than before and we call this phenomenon is Climate Change. Environmental Impact Assessment being implemented in Korea is to prevent predicted environmental impacts from deteriorating within the domestic information and situation. As the climate change is getting severe, new meteorological records can be occurred which is exceeded existing statistical data. According to KMA(Korea Meteorological Administration) data, maximum value of precipitation and temperature in many regions changed with new data within last decade. And these events accompanied with landslides and flooding, and these also affected on water quality in rivers and lakes. According to impacts by climate change, disasters and accidents from heavy rain are the most apprehensive parts. And water pollution caused by overflowed non-point sources during heavy rain fall, fugitive dust caused by long-term drought, and sea level rise and Tsunami may affect on seaside industrial complex should be worth consideration. In this review, necessity of mutual consideration with influences of climate change was considered adding on existing guideline.
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최광호 ( Kwangho Choi ) 한국통상정보학회 2018 통상정보연구 Vol.20 No.1
본 연구에서는 수출중소기업이 어려움을 겪고 있는 수출대금 결제방식의 문제를 기존의 거래방식의 문제점을 분석하여 전자결제를 통해 대응방법을 제시하고자 하였다. 정보통신의 발달과 금융환경의 변화에 따라 무역환경은 빠른속도로 변화하고 있다. 기존 전자무역 결제방식은 B2B거래에 많이 사용되어가는 추세이지만, 중소기업에서 실질적으로 사용할 수 있는 시스템은 많지 않다. 또한 최근 무역결제방식의 추세 역시 무신용장방식으로 변화되면서 수출중소기업의 대금결제 사고비율도 늘어나고 있으며 이에 대한 대응책이 필요한 시점이다. 본 연구에서는 수출중소기업의 현황과 기존 전자무역 결제방식의 장단점을 분석하고, 저비용, 거래당사자의 편의성을 확대할 수 있는 방법으로 B2C거래에 까지 활용할 수 있는 에스크로제도의 도입 필요성과 거래당사자의 활용방안에 대해 제시하였다. Under this study, it is intended to present responsive method through the electronic payment on issues of export proceeds payment method where small and medium-sized export enterprises encounter with significant difficulty by analyzing the issues of existing transaction method. Following the development of information communication and change of financial environment, the trade environment is swiftly changing. Existing e-commerce payment method is significantly used in the B2B transactions now, but there are not many systems to actually use for small and medium-sized enterprises. In addition, the recent trend of trade payment method frequently facilitate the non-letter of credit method that the ratio of proceeds payment troubles for those small and medium-sized export enterprises is on the rise. Under this study, the strengths and weaknesses of the status of small and medium-sized export enterprises and existing e-commerce payment method are analyzed and the need of introducing the escrow system that may be facilitated at low cost and for B2C transaction as well as its operation plan are proposed.
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