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        검색결과 1,119

        461.
        2010.04 KCI 등재 구독 인증기관 무료, 개인회원 유료
        본 연구는 일본 고베시 로코아일랜드 완충녹지의 공간기능별 지형구조, 식재개념, 식재구조를 조사분석하여 해안매립도시의 토지이용을 고려한 완충녹지 식재기법 연구 기초자료를 제공하고자 수행하였다. 로코아일랜드(총면적 580ha)는 대규모 완충녹지를 박스형으로 조성하여 외곽부의 항만물류 산업용지와 도시내부 도시기능용지로 구획되었다. 완충녹지 지형구조는 편향마운딩형, 병렬마운딩형, 복합마운딩형이었고, 북쪽의 녹지폭은 50m, 동쪽의 녹지폭은 8~32m, 서쪽의 녹지폭은 37.5m, 경사도는 18~25˚, 성토고는 2~15m이었다. 공간기능별 재개념은 해안측 사면부는 경관식재와 완충식재, 도시내부는 경관식재와 녹음식재를 적용하였다. 북측 완충녹지 식재구조 조사결과, 종가시나무, 녹나무, 후박나무, 녹보리똥나무 등 난온대 상록활엽수를 식재하였고, 100mm2단위의 종수 및 식재밀도는 최대 교목 9종 22주, 아교목 9종 15주, 관목 3종 67주로 전 층위 14종 104주이었다. 녹피율은 교목층 69~139%, 아교목층 26~38%, 관목층 6~7%, 전 층위 101~184%, 녹지용적계수는 교목층 1.40~3.12m3/m2, 아교목층 0.43~0.55m3/m2, 관목층 0.06m3/m2, 전 층위 1.89~3.73m3/m2이었다.
        4,000원
        462.
        2010.04 KCI 등재 구독 인증기관 무료, 개인회원 유료
        2009년에 태안해안국립공원의 현존식생 및 녹지자연도를 조사하였다. 태안해안국립공원의 현존식생은 11개 식물군락과 기타지역으로 구분되었으며, 2차림인 자연림은 곰솔군락, 소나무군락, 낙엽활엽수군락, 소나무-낙엽활엽수군락 등 6개 식물군락으로, 조림지는 곰솔-낙엽활엽수림, 곰솔-리기다소나무림, 곰솔-밤나무림, 아까시나무림 등 5개 수림으로 구분되었다. 태안해안국립공원의 육지면적 중 녹지자연도 8등급 지역이 약 40.6%로 나타났으며, 반면에 녹지자연도 9등급 지역은 13.7%로 나타났다. 태안해안국립공원의 자연경관과 생물다양성 회복을 위하여 조림수종 제거 등 외래종에 대한 관리가 필요하다.
        4,000원
        469.
        2010.03 KCI 등재 구독 인증기관 무료, 개인회원 유료
        국내 전체 시설원예에서 파이프 골조로 시공된 비닐하우스가 99.2%이며 구조적으로 취약한 단동형 유리온실이 대부분이다. 이에 현재 국내에서 사용하고 있는 단동형 연통형 단동형 3개로 구성된 배치형 비닐하우스의 지붕면에 대한 피크외압계수에 대해서 알아보고자 한다. 실험결과 단동형이 연동형보다 30%정도 큰 피크외압계수로 분포하고 있었다. 배치형 비닐하우스의 지붕면 피크외압계수도 3개동 모두에서 단동형보다 크게 20-30%정도 크게 분포하고 있었다.
        4,000원
        470.
        2009.12 KCI 등재 구독 인증기관 무료, 개인회원 유료
        To investigate resistance of Myzus persicae, which is resistant to etofenprox belonging to pyrethriods, to other insecticides, fenpropathrin and thiamethoxam, mortality and LC₅₀ values for these two insecticides against the etofenprox-resistant and -susceptible populations were obtained and EPG analysis for feeding behaviors of thiamethoxam or fenpropathrin treated and non-treated M. persicae was conducted. For fenpropathrin, mortality after 48 h treatment was 28 and 29%, respectively for the resistant and susceptible population. The LC₅₀ value was 193.15 and 93.46 ppm, respectively. For thiamethoxam, mortality after 48 h treatment was 87 and 57%, respectively for the resistant and susceptible population. The LC₅₀ value was 3.17 and 30.34 ppm, respectively. There was no significant difference in feeding behavior between fenprorpathrin treated and non-treated M. persicae. They showed a continuous feeding pattern. However, contact signal frequency increased in the thiamethoxam treated M. persicae 1 hour after treatment and significant difference was shown.
        4,000원
        471.
        2009.12 KCI 등재 구독 인증기관 무료, 개인회원 유료
        본 연구에서는 논에서의 조사료 생산을 위한 작부형태별 우분액비의 시용효과를 규명하기 위하여 총체보리+수수수단그라스 교잡종 이모작구 그리고 헤어리베치를 녹비작물로 이용한후 수수수단그라스 교잡종 일모작구로 하여 논에서의 다양한 조사료 작부 형태를 배치하고, 수수수단그라스 교잡종의 생산성 및 사료가치를 조사하였다. 그리고 처리구별 토양의 지력증진 효과를 분석함과 동시에 우분액비의 시용과 경작형태에 따른 용탈수중 -N, -N 및 -P 등을 분석하여 환경오염에
        4,000원
        472.
        2009.12 구독 인증기관 무료, 개인회원 유료
        The purpose of this study is to propose the methodology for introducing green infrastructure that can improve the health of citizens by promoting walkability. The methodology is composed of the following three phases: classification of the types of green spaces, selection of core green spaces with two separate analyses, and introduction of the framework of green infrastructure to promote walkability. In the first phase, the classification of the types of green spaces was carried out in order to understand existing distribution pattern of green spaces in study site. In the second phase, walkable blocks were selected by such methods as walkability value. Through these two analyses, all the blocks were divided into three groups according to the ranking figured up the second analyses' results. The blocks in the first group, the group involved in the top 30% and having the greatest ranking, were defined as walkable blocks. In the last phase, a basic frame of the green infrastructure in study site was introduced by connecting the walkable blocks with using other blocks and the green spaces over 1ha. In case study, 28 important green spaces and 35 walkable blocks were selected through the two analysis process. Then, the basic framework of green infrastructure based on the selected 28 important green spaces and 35 walkable blocks was introduced. The methodology applied to this study can be used to get the best selections of the proper green infrastructure in accordance with the purpose of the ecological and recreational local development. In particular, this study will suggest a specific analysis model to use for the ecological and walkable urban planning with green spaces existing in the city.
        4,000원
        473.
        2009.11 구독 인증기관 무료, 개인회원 유료
        Most countries have been focused on the CDM(Clean Development Mechanism). According to Wikipedia, the free encyclopedia, CDM is an arrangement under the Kyoto Protocol allowing industrialized countries with a greenhouse gas reduction commitment to invest in projects that reduce emissions in developing countries as an alternative to more expensive emission reductions in their own countries. There are many environmental problems which resulted from development of IT field. The main objective of this paper is to find an effective methodology as an initial stage for applications of green IT in a real life. Therefore this paper addresses worldwide reviews on green IT products.
        4,000원
        475.
        2009.10 구독 인증기관·개인회원 무료
        This study was performed to investigate the correlation between changes of feeding behavior of green peach aphid, Myzus persicae and residual effect of an insecticide, Pyrifluzuinazon, using EPG technique. Pyrifluquinazon was showed the insecticidal activity until three days (72h) after treatment, and the activity was high in nymph than adult of GPA. There was no difference among treatment methods. Lethal sign was observed the slimed the abdomen of GPA after 3 days that rises the insecticidal activity, and dieㅇ as being sticked and/or pulled out the needle. Residual efficacy from 1, 3, 5, 7 to 20 days after treatment, insecticidal activity was showed 70% in 50 ppm, recommended concentration, until 5 days. And waveforms relating to non-probe time and phloem phase time using EPA, feeding inhibition efficacy was showed during 5 days after treatment, but showed similar level with control after 13 days. These results show that the change of feeding behavior of GPA is correlated with the change of residual effect of pyrifluzuinazon.
        480.
        2009.09 KCI 등재 구독 인증기관 무료, 개인회원 유료
        For the comparing of mortality of the resistance and susceptible population of Myzus persicae, etofenprox was treated in the recommended concentration of 200ppm. Mortalities of resistance population were 16.7 and 36.7%, and susceptible population were 86.7 and 86.7% after 24 and 48 hours treatment, respectively. For the detect of cross resistance to other pyrethroids, 6 pyrethroids were examined. Mortalities of susceptible and resistance populations were 90 and 31% to deltamethrin, 92 and 23% to lambda cyhalothrin, 81 and 14% to cypermethrin, 70 and 20% to α-cypermethrin, 29 and 28% to fenpropathrin, 84 and 29% to fenvalerate, respectively. It was showed that resistance populations were generally resistive to other pyrethroids. On the other hands, for recognized ecological characteristic of M. persicae susceptible and resistance populations life table was tested on the pepper leaves in the petri dish and on the plant in the pot. This results were showed that intrinsic rate of increase (r<SUB>m</SUB>), net reproduction number (R₀) and generation time in day (T<SUB>c</SUB>) were significantly different between two population in both tested. However, life span and reproduction period were slightly different between them. Otherwise, feeding behaviors were tested using EPG technique with non- and treated etofenprox. First potential drop time of susceptible and resistance population was 73.5 and 257.9 sec with non-treated and 93.3 and 1076.2 sec after treated, respectively. Electrical probing signals were 8.2 and 48.8 times with susceptible and resistance individuals after treated etofenprox, respectively. It was supposed that the resistance is more probings than susceptible population. After treated, total feeding time have more 6,728.9 sec on resistance than 965.5 sec on susceptible population. So, total non penetration time of susceptible population was 3,000 sec longer than resistance population.
        4,000원