제주도 연안 갈치 채낚기 어구의 생력화 : 1. 연속식 채낚기어구의 모형 실험

서두옥,정용진,김석종,이창헌,김고환,박용석 제주대학교 해양연구소 2000 해양자원연구소연구보고 Vol.24 No.-

The authors carried out a model experiment of continuous hairtail hand line on the rooftop in order to obtain the fundamental data on elimination of labor with hairtail hand line in the coast of Jeju The results are as follow : 1. The continuous main line was rotated smoothly by driving roller. 2. The branch lines and hooks on a main line which was rotated by rotary machine were entangled slightly. 3. The branch lines attached to rubbered model of hairtails to hooks were rotated continuously by the rotary machine.

PCR을 이용한 국내 및 수입 축산물 유래 Listeria monocytogenes의 유전학적 분석연구

우용구,이수화,이철현,최정수,류재두,김영일,이오수,김봉환 한국수의공중보건학회 2003 예방수의학회지 Vol.27 No.2

One hundred-fifty two of Listeria strains were isolated from domestic chicken carcasses, a slaughter-houses from nationwide from 1996 to 1997 and imported livestock products from a ten foreign countries including the USA, China, France and Thailand. To substitute the laborious and time consuming procedures of clinical laboratory standard diagnostic methods, the rapid and specific multiplex PCR(M-PCR), which was designed to amplify a three kinds of genes simultaneously f3r specific detection and differentiation of L. monocytogenes(LM) by one step procedure, was established. The LM strains confirmed with M-PCR were analysed to their genetic diversities by RAPD using the two primers(D87 & MMTl), and also evaluated on their discriminatory abilities(na) between two primers. our study also conducted the REP-PCR and ERIC-PCR for evaluation of the possibility of REP and ERIC elements for genetic subtyping of LM strains. According to the REP-PCR and ERIC-PCR fingerprinting patterns, LM strains were divided into 7(ERIC-type) and 4(REP-type) major clusters at the relative clone cut off value of 80%. According to the computer analysis of PCR results using the GelCompar Ⅱ software, ERIC-PCR(DI=0.955) had expressed the most high discriminatory ability and followed by REP-PCR(DI=0.952), RAPD(D87; 0.954, MMT1; 0.937), in order. The combined analysis of the present PCR results was also expressed the reliable and useful discriminatory ability(DI=0.916). This study suggested that PCR based methods could be used as an reliable, reproducible, rapid, and highly discriminatory method for the genetic differentiation of genus Listeria.

제주도 연안 갈치 채낚기 어구의 생력화 : 1.연속식 채낚기어구의 모형 실험

서두옥,정용진,김석종,이창헌,김고환,박용석 제주대학교 해양연구소 2000 해양과환경연구소 연구논문집 Vol.24 No.-

The authors carried out a model experiment of continuoius hairtail hand line on the rooftop in order to obtain the fundamental data on elimination of labor with haritail hand line in the coast of Jeju. The results are as follow ; 1.The continuous main line was rotated smoothly by driving roller. 2.The branch lines and hooks on a main line which was rotated by rotary machine were entangled slightly. 3. The branch lines attached to rubbered model of hairtails to hooks were rotated continuously by the rotary machine.

제주도 해안의 수중소음- I : 제주항과 추자도사이

정용진,변창익,서두옥 제주대학교 해양연구소 1986 해양자원연구소연구보고 Vol.10 No.-

수치사진측량기법을 이용한 문화재의 3차원 모델링에 관한 연구

문두열,이봉재,신문섭,오상용 동의대학교 산업기술개발연구소 2005 産業技術硏究誌 Vol.19 No.-

고해상도의 디지털 카메라는 근거리 수치사진측량에서 널리 유용하게 사용되고 있으며 점차 활용도가 증가하고 있다. 또한 사진측량 장비의 급속한 발전으로 정밀도가 많이 향상되었고 컴퓨터를 이용한 지형공간정보체계기술의 발달로 더욱 정밀한 3차원 지형의 재현과 면적 및 토공량 산정이 가능하게 되었다. 본 연구에서는 휴대가 간편하고 수치영상의 자체저장능력을 지닌 디지털 카메라를 이용하여 촬영조건의 다양한 변화에 따른 위치오차를 분석하였으며 광속조정을 통하여 높은 정확도의 화소 좌표를 획득하여 3차원 지형의 모니터링을 위한 기초 자료로 사용할 수 있도록 하였다. 또한 근거리수치사진측량기법의 국부지역모형생성과 문화재의 보존과 복원을 보다 효율적으로 하기 위해 수치정보 분석에 관한 연구를 수행하여 봉분의 3차원 구현에 대한 활용방안을 모색하였다. Digital high resolution cameras are widely available, and are increasingly use in digital close-range photogrammetry. And photogrammetry instruments are developing rapidly and the precision is improving continuously. The building of 3D terrains of high precision are possible and the calculation of the areas or the earthwork volumes have high precision due to the development of the technique of the spatial information system using computer. Using the digital camera which has capacity of keeping numerical value by itself and easy carrying, we analyze the positioning error according to various change of photographing condition. Also we try to find a effective method of acquiring basis data for 3D monitoring of high-accuracy in pixel degree through digital close-range photogrammetry with bundle adjustment for local terrain model generation and 3D embodiment of tumulus. In the study is about to efficient analysis of digital information data for conservation of cultural properties.

고추, 포도 및 사과에서 분리한 탄저병균(Colletotrichum gloeosporioides)의 특징과 병원학적 연구

李斗珩,李龍範 서울市立大學校 1989 論文集 Vol.23 No.-

Three species of Colletotrichum Corda and Glomerella cingulata(Stonem). Spauld. & v.Schr. known to cause ripe fruit rots of apple, peach and pepper in Korea are compared with respect to culture characteristics, morphology, temperature reactions and pathogenicity determined by field collection and artificial inoculation. The following 4 species and 3 strains of anthracnose fungi reconized : C. coccodes (Wallr). Hughes, C. dematium (Pers. ex Fr.)Grove, C. gloeosporioides(Penz.) Sacc. G, chromogenic, and non-chromogenic strain and G. cingulata. The characteristic features of these organisms are discussed and on the evidence available it is found desirable to designate a new form of C. gloeosporioides or new species of Colletotrichum. It appears that the differences in virulence is not only among the different species of Colletotrichum and G. cingulata but also between isolates of the same species. C. dematium, G. gloeosporioides and G. cingulata are detected in seed samples of red pepper (Capsicum annuum) and C. gloeosporioides are the predominant species in seeds of red pepper which are naturally infected with anthracnose in field conditions. Plating of seed components showed that three species of anthracnose fungi are detected from seed coat, endosperm and plumule bud. C. dematium, C. gloeosporioides and G. cingulata caused seed rot, damping-off and seedling blight. In the effect of some fungicides to C. dematium and C. gloeosporioides on red pepper, Difolatan was the most effective to the fruit rot followed by Orthocide and Phaltan.

제주도 연안의 수중소음-Ⅱ : 동부연안

서두옥,정용진 제주대학교 1986 논문집 Vol.23 No.-

Underwater ambient noises were investigated at 12 points in the eastern coast of Cheju Island The underwater ambient noise was present as a sound pressure level for each frequences. The results were as follows: 1 The sound pressure level of the underwater ambient noise was the highest of that in 12 points at 100 m in the depth of water at station D. 2 The vertical average sound pressure level at 200Hz was measured at 10m. 50m and 100m in the depth of water The values were 88dB. 87dB and 90dB, respectlvely. 3 The average sound pressure level on 12 points was measured 88 dB at 200Hz in the frequency.

횡류팬 유로최적화를 위한 수치실험

전용두,이종수 공주대학교 생산기술연구소 2002 論文集 Vol.10 No.-

Cross flow fan system is widely used for various applications, especially for the air-moving device of heaters, air-conditioners, and air-curtains. Although there are efforts for the optimization of cross-flow fan flow path with different methods of approach, it is still being investigated by many researchers through experimentally and/or theoretically, because the flow pattern of the cross flow fan is not stereotyped. This paper presents some results from numerical experiments for optimization of the flow path through a cross-flow fan to be applied to indoor wall-mounted room heater. Two dimensional analysis has been applied to a specific fan system including inlet and diffuser outlet. Flow characteristics are presented and discussed for two different flow path at three different operating conditions represented by rotational speed(800, 1,000, 1,200 rpm) of the fan. According to the simulated results for the specific fan system under consideration, it could be found that the flow pattern resembles each other at different rotational speed (to say from 800 rpm to 1,200 rpm) for a fixed flow path, while the secondary flows mostly absorbs the speed effects. By changing the flow path significant increase in volume flow rate is estimated upto 2.65 at the same rotational speed. According to the present experience, fan flow path design can be performed more efficiently by incorporating this type of numerical experiments combined with the model tests.

명태의 행동제어용 심전도 도출에 관한 연구

박용석,이창헌,이유철,서두옥 제주대학교 해양연구소 1997 해양자원연구소연구보고 Vol.21 No.-

In the walleye pollock. Theragra chalcogramma. which has a heart with a strong electromotive force, the ECGs were found to be recordable by electrodes placed in the water from fish's body. The day on the experiment, fish was operated on in order to install a leading-out bipolar electrode. This electrode was used for recording of the cardiosignal of the fish on a digital storage oscilloscope. The electrode was made from a fish book which was re-shaped according to the shaped of fish heart and body surface. This hook was then connected to the lead-code insulated with paint, and the connecting part was covered with paint. The pointed end was stripped off slightly for conduction of electricity and the another pointed edge was used for hooking the electrode into the chest cavity. QRS complex of the ECG was marked. The amplitude of QRS complex was about 0.1-lmV. This method enabled us to observe the heart beat rate of the walleye pollock under least disturbed state. Ordinary heart beat rate was not quite regular. Very slight stimulation was enough to bring about cardiac inhibition. which was also accompanied by a considerable reduction in the amplitude of the QRS. After rough treatment. such as sound stimulus or electric shock. the heart beat rate showed remarkable decrease. reaching a value a few times lower than the normal level.

류마티열 환아의 활동성과 심전도, 각종 급성기반응 및 혈청단백 변화간의 관계

박기용,조용수,이두봉 대한소아과학회 1970 小兒科 Vol.13 No.5