• 한국응용곤충학회지
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• 제45권2호
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• pp.179-188
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• 2006

감귤 병해충 방제용으로 사용되고 있는 37종의 약제에 대한 팔라시스이리응애의 감수성을 조사한 결과, difenoconazole, imibenconazole, azoxystrobin, dithianon, fluazinam, procymidon, streptomycin, tribasic copper sulfate 등의 살균제 8종과 dichlovos, imidacloprid, thiamethoxam 등의 살충제 3종, 그리고 milbemectin, tetradifon, dicofol, spirodiclofen 등의 살비제 4종은 팔라시스이리응애 알의 부화율에 대한 영향이 적었으며, propineb, difenoconazole, imibenconazole, azoxystrobin, dithianon procymidon 등의 살균제 6종과 bifenazate, tetradifon, spirodiclofen 등의 살비제 3종은 성충에 대한 독성이 낮았다. 농약이 살포된 점박이응애 알을 먹이로 공급하여 성충에 대한 이차독성을 검정한 결과, 살균제 2종(fluazinam, streptomycin)과 살비제 3종(machine oil, cyhexatin, halfenprox)이 독성이 낮은 것으로 나타났다.

• 농업과학연구
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• 제35권2호
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• pp.127-136
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• 2008

곤충병원성 곰팡이인 Beauveria bassiana는 미생물 살충제로서 다양한 해충들을 방제하는데 사용해오고 있다. 최근에 B. bassiana TBI-1균주가 두점박이응애, 온실가루이에 살충효과가 있는 것으로 보고되었다. 생물학적 방제 인자인 B. bassiana TBI-1를 목화진딧물에도 어느 정도의 살충활성을 나타내었다. B. bassiana TBI-1 균주를 처리한 후 일주일 동안 평균 진딧물의 증가율은 0.21로 나타났으나 처리하지 않은 대조군에서는 0.24의 증가율로 약간 높게 나타나 보였다. 이러한 결과에서 백강균의 처리구에서 진딧물의 평가 증가율이 0.03 낮게 나타나는 것을 알 수 있었다. 또한 오이 잎에 B. bassiana TBI-1 균주에 의하여 붉은빛 곰팡이의 형태로 죽은 진딧물의 죽은 흔적을 육안으로 확인할 수 있었다. 적정농도로 B. bassiana TBI-1을 처리하면 목화진딧물의 개체군 증가율을 현저히 감소시킴으로 효과적으로 진딧물을 방제할 수 있을 것이다.

• 한국항해항만학회:학술대회논문집
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• 한국항해항만학회 2006년도 Asia Navigation Conference
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• pp.203-212
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• 2006

The purpose of this research is to suggest the activation plan of Busan port. In the past years, Busan port enjoyed the golden days because of the China's rapid economic growth. But China's continuous development of ports, the trend of increasing container ship size and increasing direct call to China are coming threats to Busan port. So Korea needs to revise the 'Northeast Logistics Hub' strategy because it is considered that Korea ports continuously will handle China's transshipment cargoes. But now China's transshipment cargo share has decreased by direct call to China ports. It means that China has a lot of its local cargoes, so many ship companies change liner service route to handle China cargoes except Bussan ports although Busan port is included in the main trunk route. In the future, Bussan port will not be able to compete again about throughput with China ports if Busan port's transshipment cargo share decreases. So we must find out and develop Busan port's strength which is the competitive edge. By good luck, Busan port has a few opportunities such as the developed feeder network service and geographical advantages. Busan port has many feeder network service like spider's web in any northeast countries so we can suggest that if Japanese shippers use Busan port to distribute their cargoes to Japanese local areas, its transport costs are cheaper than when they use Japan's main ports. In this paper analyzed side of cost when they use Bussan port like hub to distribute their cargo to their local areas. Because most companies tried to reduce the total cost about logistics. Finally, this paper suggests when northeast shippers(China, Japan) use Bussan port which is more economical than their local main ports.

• Journal of Microbiology and Biotechnology
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• 제17권5호
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• pp.761-768
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• 2007

Serratia proteamaculans HY-3 isolated from the digestive tract of a spider produces an extracellular protease named arazyme, with an estimated molecular mass of 51.5 kDa. The purified enzyme was characterized as having high activities at wide pH and temperature ranges. We further characterized biochemical features of the enzymatic reactions under various reaction conditions. The protease efficiently hydrolyzed a broad range of protein substrates including albumin, keratin, and collagen. The dependence of enzymatic activities on the presence of metal ions such as calcium and zinc indicated that the enzyme is a metalloprotease, together with the previous observation that the proteolytic activity of the enzyme was not inhibited by aspartate, cysteine, or serine protease inhibitors, but strongly inhibited by 1,10-phenanthroline and EDTA. The araA gene encoding the exoprotease was isolated as a 5.6 kb BamHI fragment after PCR amplification using degenerate primers and subsequent Southern hybridization. The nucleotide sequence revealed that the deduced amino acid sequences shared extensive similarity with those of the serralysin family of metalloproteases from other enteric bacteria. A gene(inh) encoding a putative protease inhibitor was also identified immediately adjacent to the araA structural gene.

• 한국광학회지
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• 제1권1호
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• pp.46-51
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• 1990

Soft X-ray는 자연상태의 생물체를 높은 대비(high contrast)의 영상으로 관찰할 수 있는 광원이다. 1GW급의 광분해 옥소레이저 ($\lambda$=1.315$\mu\textrm{m}$, E=12.7J)를 몰리브덴(Mo) 표적에 집속시켜 플라즈마를 발생시켰으며 플라즈마에서 방출되는 넓은 파장 영역의 연속스펙트럼을 0.1$\mu\textrm{m}$ 두께의 알루미늄 필터를 거치게 하여 soft X-ray 영역에 중심세기를 갖는 광원을 얻었다. X-ray용 resist로 감도가 좋은 PBS를 사용하여 그물망(mesh), 거미줄, 적혈구의 replica를 얻었다. 본해능에 미치는 두 가지의 주된 영향인 광원의 크기에 의한 영향과 Fresnel 회절효과를 고찰하고 실험결과를 비교하였다. 본 실험에서는 0.1$\mu\textrm{m}$이하의 분해능을 얻었다.

• 한국환경농학회지
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• 제38권3호
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• pp.139-144
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• 2019

BACKGROUND: Epigeic arthropods participate in ecological functions as predators, decomposers and herbivores. The purpose of this study was to investigate the responses of some dominant arthropods in rice fields to different forms of agricultural land management. METHODS AND RESULTS: The abundance of microarthropods was compared between rice fields and uplands in the non-growing season. Collembola, Oribatida and Mesostigmata were more abundant in the upland fields than in the paddy fields. The community composition and diversity of epigeic arthropods were compared between fallow and rice fields. The total abundance and species richness of spiders and ground beetles were not significantly different in the two types of agricultural fields. The abundance of Arctosa kwangreungensis was greater in fallow fields than in cultivated fields. The community structure of arthropods was compared between paddy fields with and without barley. The cropping system altered the community composition of spiders but not their biodiversity. Barley cultivation increased the abundance of ground beetles but decreased that of spiders. We suggest that this contrast was partly due to the availability of plants that provided shelter and food for ground beetles. CONCLUSION: These results show that soil use intensity and cropping system alter the community composition of epigeic spiders and ground beetles. This could result in ecosystem-level alterations with respect to the control of pests and weeds. Our results also suggest that biodiversity of ground-dwelling arthropods may not increase during short fallow periods.

• 영어영문학
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• 제55권2호
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• pp.293-314
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• 2009

Leslie Marmon Silko's Storyteller does not belong to a typical category of books, for it looks more like a family album with photographs, poems and Pueblo narratives as well as short stories authored by her. This 'book' without any chapters defies a traditional concept of books we are familiar with. In addition to refusing to be labelled as a conventional book, I argue, Storyteller defies the tradition of Western personal writing in that it shows the collective power of stories. That is, stories have the collective power which is impersonal beyond personal, internalized identity. It does not mean, however, the collective power comes from groups rather than individuals. It is not the conventional opposition of group and individual but that of group and collectiveness that matters here. I draw a distinction between group and collectiveness on the ground that the former actually groups individuals into categories with which individuals identify themselves. It is not group but collectiveness where stories find their power. "Storyteller," the first of eight short stories in the book, tells the story of an unnamed protagonist, a Yupik Eskimo girl, who takes revenge of her parents who died after drinking poisoned alcohol sold by a white storeman. There are four layers of stories in this short story. The first one is the old man's story of a blue glacier bear; the second one is a revenge story of the Yupik girl; the third one is a story told by the girl to the attorney after being arrested for the death of a storeman. And the final one is the story told to us by Silko, entitled "Storyteller." Although the structure of story within story resembles a technique of metafiction at a glance, it surely is a characteristic of Pueblo narratives in general, according to Silko. This kind of stories within stories refers to the collective power of story which, like a spider's web with many little threads radiating from the center and crisscrossing one another, is also a characteristic of stories on the Web today.

• 한국응용곤충학회지
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• 제60권1호
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• pp.63-70
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• 2021

점박이응애는 광식성 초식자로서, 사과의 주요 해충 중 하나이다. 사과 품종에 따라 점박이응애의 밀도 형성이나 피해 규모가 다르게 나타난다. 세 가지 품종, 쓰가루, 홍로, 후지의 잎에 대한 점박이응애의 이동 선호성, 발육속도, 그리고 산란능력이 다른지를 시험하였다. 잎 절편을 이용한 실험 결과, 이동 선호성은 쓰가루나 홍로보다 후지 잎에서 높았다. 알에서 성충까지 발육기간은 후지 잎에서 가장 짧았고 홍로에서 가장 길었다. 암컷 성충 수명은 후지에서 가장 짧았다. 암컷의 총산란수는 사과 품종에 따라 다르지 않았지만, 일 평균 산란수는 후지에서 높았다. 생명표 분석 결과 홍로 잎에서 점박이응애의 적합도가 가장 낮게 나타났다. 이상의 결과는 사과원에서 품종에 따른 점박이응애 발생 양상의 차이를 설명해 주고 있으며, 향후 다양한 사과 품종에 대한 평가를 통해, 품종별 응애류 관리 전략 개발에 기초 자료가 될 것이다.

• 대한의용생체공학회:의공학회지
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• 제43권5호
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• pp.361-368
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• 2022

The purpose of this study was to develop a hand rehabilitation training system for hemiplegic patients. We also tried to find out five hand postures (WF: Wrist Flexion, WE: Wrist Extension, BG: Ball Grip, HG: Hook Grip, RE: Rest) in real-time using multi-channel EMG-based deep learning. We performed a pre-processing method that converts to Spider Chart image data for the classification of hand movement from five test subjects (total 1,500 data sets) using Convolution Neural Networks (CNN) deep learning with an 8-channel armband. As a result of this study, the recognition accuracy was 92% for WF, 94% for WE, 76% for BG, 82% for HG, and 88% for RE. Also, ten physical therapists participated for the usability evaluation. The questionnaire consisted of 7 items of acceptance, interest, and satisfaction, and the mean and standard deviation were calculated by dividing each into a 5-point scale. As a result, high scores were obtained in immersion and interest in game (4.6±0.43), convenience of the device (4.9±0.30), and satisfaction after treatment (4.1±0.48). On the other hand, Conformity of intention for treatment (3.90±0.49) was relatively low. This is thought to be because the game play may be difficult depending on the degree of spasticity of the hemiplegic patient, and compensation may occur in patient with weakened target muscles. Therefore, it is necessary to develop a rehabilitation program suitable for the degree of disability of the patient.

• 한국항해항만학회:학술대회논문집
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• 한국항해항만학회 2023년도 추계학술대회
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• pp.23-26
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• 2023

과거에는 주요 항로 인근의 해양안개(sea fog)를 관측하고 이를 선박들의 안전 운항을 위한 실시간 정보를 제공하는 데 있어서, 작동 원리가 유사한 기상관측용 시정계(Visibility Sensor) 또는 항로표지용 안개감지기(fog detector) 등을 설치하여, 장비가 설치된 곳 인근의 국지적인 안개를 관측하고 있었다. 하지만 먼지, 염분 및 꽃가루 등에 의한 오염이나 거미줄 같은 생물에 의한 감지 센서의 오동작이 자주 발생되어, 실시간 관측 정보의 신뢰성이 다소 낮은 상황이었기 때문에 실시간으로 해양안개 관측정보를 선박이나 이용자에게 즉각 제공하기에는 다소 무리가 있었다. 2019년부터 2022년까지 기상청과 해양수산부 항로표지과 등이 협업을 통해, 보다 신뢰성 있는 실시간 영상기반 해양안개관측 시스템을 전국 주요 항로에 있는 항로표지시설(Lighthouse) 100개 국소에 구축하여 신뢰성 있는 해양안개관측 정보를 매 10분마다 수집하고, 이를 실시간으로 대국민 서비스(웹페이지)를 수행하게 되었다.