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        검색결과 77

        61.
        2012.12 KCI 등재 구독 인증기관 무료, 개인회원 유료
        제주지역을 중심으로 실시한 나방류 조사결과 포충나방과의 2종(Daulia afralis Walker, Herpetogramma cynaralis Walker)이 우리나라에서는 처음으로 발견되었기에 보고한다. 본 연구에서는 이들 종의 외부형태 및 암수생식기의 특징을 검경하여 도해하고 간략히 재기재하였다. 또한 각 종별로 분류학적 정보 및 국내외 분포범위에 대하여 정리하여 보고한다.
        3,000원
        62.
        2012.06 KCI 등재 구독 인증기관 무료, 개인회원 유료
        The study indicated that antimicrobial activity about gram positive and gram negative bacteria of ginger-oleoresin(GO) extract with the condition of ethanol and supercritical fluid extractions. As the concentration of extraction increases, the clear zone of GO ethanol extract also increased dependently. This led the antimicrobial activity of gram positive bacteria to take bigger place than gram negative bacteria especially in Listeria monocytogenes. There was a high antimicrobial activity in E-III treatment where the ratio of the ginger powder extract to ethanol extraction was 1:6. It was quite effective to treat the antimicrobial activity of GO ethanol extract under 80oC and there was not big difference in the intervals which were the extraction time - 1 to 7 hours. The antimicrobial activity of supercritical fluid extract seemed to take the biggest place in Listeria monocytogenes. From the supercritical fluid extract, it was shown the strong ability of antimicrobial activity in the condition with 100 bar 35oC, 250 bar 35oC and 250 bar 65oC. Furthermore, according to the case of solvent extract, there was not any significant difference in the antimicrobial activity with condition of extraction. However, there was significant antimicrobial activity in E-III treatment of 100 bar and 500 bar of extraction pressure, and 35oC and 65oC of extraction temperature.
        4,000원
        63.
        2011.05 구독 인증기관·개인회원 무료
        Bae et al. (2008) made a illustrated catalogue of the family Pyralidae in Korea, including 349 known species up to date. During the survey of the lepidopterous insects in Jeju island, we found two unrecorded species, Daulia afralis Walker and Herpetogramma cynaralis Walker, from Korea. In this study, we report the two newly recorded species with illustration of adult and genitalia, including available information on distributional range and synonymy. The material examined is now deposited in the Natural History Museum, Hannam University. The genitalia of the species were mounted in Euparal media and photographed with a AxioCam MRc 5 digital camera attached to a Carl Zeiss microscope, with an Axio Imager A1. The color standard for the re-description of adults was based on the Methuen Handbook of Colour.
        66.
        2009.12 KCI 등재 구독 인증기관 무료, 개인회원 유료
        In this paper, we present a wireless RFID glove in emotional learning method The Proposed wireless RFID glove consists of three parts RF wireless module, RFID reader, and RFID tags Objects tagged with a small passive RFID tag, can be sensed at short range
        4,000원
        67.
        2009.10 구독 인증기관·개인회원 무료
        Ant species were reported to have specific vertical distribution in high mountains in Korea. The vertical distribution was recognized in Hanla mountain being highest in South Korea using pitfall traps in 2006. This phenomena suggests that temperature may be a main factor for distribution of ant species, since 0.5~0.6℃ of temperature decrease per each 100 m of altitude. The present study was carried out to test this hypothesis. Ant communities were surveyed using pitfall traps (ten traps per each site) at 234 sites, which included 9 high mountains in South Korea. The vertical distribution of ant species were found in all the high mountains. Abundance data (probability of occurrence, %) of seventeen abundant ant species which occurred at more than 10% of the study sites were analyzed using multiples regression analysis with four independent factors such as temperature, precipitation, light intensity, and NDVI. As results of the regression analysis, temperature was most important in determining the abundance in 11 of 17 species. Light intensity was most important in 3 species, and precipitation in 1 species. In the 11 species being highly dependent on temperature, determination index (R2) of regression model with one factor of temperature was approximately 90% of determination index of the regression model with all four factors. On the base of dependence on temperature and of ecological characteristics (ground foraging), six species such as Paratrechina flavipes, Myrmica kotokui, Pachycondyla javana, Pristomyrmex pungens, Camponotus atrox, and Crematogaster osakensis were selected as bioindicator for global warming. In the bioindicator ant species, M. kotokui and C. atrox were predicted to decline in abundance and distribution in Korean peninsula as temperature increases, whereas other four species including P. flavipes, P. javana, P. pungens, C. osakensis were predicted to increase. Temperature-Distribution models were established in four most temperature-responsive species including P. flavipes, P. javana, P. pungens, and M. kotokui, and distribution maps of the species were made from the model. Reversely, temperature was estimated from ant data of five bioindicator species using regression model, of which R2 is 0.66.
        70.
        2014.02 KCI 등재 서비스 종료(열람 제한)
        There were many attempts to increase the level of environmental cooperation in Northeast Asia. However, intergovernmental cooperation has not brought a substantial effects so far. This article aims to provide a model for multilateral joint research of environmental technologies. Each field of environmental problem requires a Consortium of joint research team and R & D mechanism. This model emphasizes joint-funding, tax-break for environmental investment and the importance of multilateral contract.
        71.
        2009.03 KCI 등재 서비스 종료(열람 제한)
        Hydraulic gradient of the landfill soils is estimated by Devlin (2003) method, and its variation characteristics from rainfall and permeability of the aquifer material are analyzed. The study site of 18 m × 12 m is located in front of the Environment Research Center at the Pukyong National University, and core logging, slug/bail test and groundwater monitoring was performed. The slug/bail tests were performed in 9 wells (except BH9 well), and drawdown data with elapsed time for bail tests were analyzed using Bouwer-Rice and Hvorslev methods. The average hydraulic conductivity estimated in each of the test wells was ranged 1.991 ×10-7~4.714×10-6 m/sec, and the average hydraulic conductivity in the study site was estimated 2.376×10-6 m/sec for arithmetic average, 1.655×10-6 m/sec for geometric average and 9.366×10-7 m/sec for harmonic average. The permeability of landfill soils was higher at the east side of the study site than at the west side. Groundwater level in 10 wells was monitored 44 times from October 2 to November 7, 2007. The groundwater level was ranged 1.187~1.610 m, and the average groundwater level range in each of the well showed 1.256~1.407 m. The groundwater level was higher at the east side than at the west side of the study site, and this distribution is identify to it of hydraulic conductivity. The hydraulic gradient and the major flow direction for 10 wells were estimated 0.0072~0.0093 and 81.7618~88.0836°, respectively. Also, the hydraulic gradient and the major flow direction for 9 wells were estimated 0.0102~0.0124 and 84.6822~89.1174°, respectively. The hydraulic gradient of the study site increased from rainfall (83.5 mm) on October 7, causing by that the groundwater level of the site with high permeability was higher. The hydraulic gradient estimated on and after October 16 was stable, due to almost no rainfall. Thus, it was confirmed that the variation of the hydraulic gradient in the landfill soils was controlled by the rainfall.
        72.
        2008.10 KCI 등재 서비스 종료(열람 제한)
        Genetic diversity plays a great role in the survival and adaptability of a species under changable environment. Korea is known as original region of cultivated soybean species with high genetic diversity of wild and cultivated soybean lines. We have collected many semi-wild soybean lines, however, the information about the genetic diversity of these lines is limited. And also the phylogenetic relationship and genetic distance among the semi-wild, typical wild types (Glycine soja Sied. & Zucc.), and cultivated soybean(Glycine max (L.) Merr.) have been controversial. This study was carried out to analyze the diversity of the three groups, and to verify their genetic variation and relationships among them. The diversity indexes of typical wild, semi-wild, and cultivated soybean accessions were 0.854, 0.677, and 0.528, respectively. According to the cluster analysis for the genetic relationships, 58 accessions were defined into three genetic groups. Cluster I consisted of 20 cultivated soybean accessions and three semi-wild soybean lines. Cluster II contained 13 semi-wild soybean lines and one typical wild soybean line. Cluster II included 21 typical wild soybean lines and one semi-wild soybean line. Genetic distance between cultivated and semi-wild soybean, typical wild and semi-wild, and cultivated and typical wild were 0.525 0.761 and 0.810, respectively. The relationship between semi-wild soybean was much closer to the cultivated soybean the to the wild soybean
        73.
        2005.12 KCI 등재 서비스 종료(열람 제한)
        The container terminals in Korea usually adopts both the bar code and the image recognition systems at the gate complex to capture necessary information on containers passing through the gate. With the rapid advancement of Information Technology(IT) these systems, however, seem to make the user not satisfied due to the inherent limitations such as the long process time taken, low rate of recognition etc., This paper, therefore, examines the adoption of Radio Frequency Identification (RFID) technology to container terminals, and tried to get some implication for the way to improve the productivity of the terminal. The results imply that some improvement in the gate and storage yard operation is feasible by the benefit of using the information of vehicles and containers collected in advance by RFID technology.
        74.
        2003.01 KCI 등재 서비스 종료(열람 제한)
        This research attempts to describe and explain the development of Korean environmental movement. It finds that the emergence of Korean environmental movement was constrained by the authoritarian nature of Korean politics. In 1970s, environmental movements were primitive and were not organized ones. With the wake of democratization in the 1980s, Korean environmental movement began to get some momentum. And in the 1990s, environmental movement to save clean water has achieved some success in certain areas. However, the emphasis on the growth of local economy in the age of local autonomy system has brought heavy degradation of local environment. The coming of the phenomena of Globalization and Cyber-Age has brought positive effects on Korean environmental movement.
        75.
        1998.12 KCI 등재 서비스 종료(열람 제한)
        This research emphasizes the necessity of building a multilateral environmental cooperation. The Process and Problems of multilateral environmental cooperation system are discussed, and some policy proposals are suggested. Especially for Northeast Asia, a comprehensive multilateral environmental cooperation system is required because of transborder pollutions. Within the contractual environment, international institutions can help the parties of conference to build up national capacity to cope with environmental threat.
        76.
        1998.10 KCI 등재 서비스 종료(열람 제한)
        A porous α-alumina tube of 2.5 ㎜ O.D. and 1.9 ㎜ I.D. was used as the support of an inorganic membrane. Macropores of the tube, about 150 nm in size, were plugged with silica formed by thermal decomposition of tetraethylorthosillcate at 600℃. The forced cross-flow CVD method that reactant was evacuated through the porous wall of the support was very effective in plugging macropores. The H_2 permeance of the prepared membrane was of the order of 10^-8 mol s^-1 m^-2 . Pa^-1, while the N_2 permeance was below 10^-11 mol. s^-1 . m^-2 . Pa^-1 at 600℃. This was comparable to that of silica-modified Vycor glass whose size was 4 nm.
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