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        검색결과 7

        2.
        2019.04 구독 인증기관·개인회원 무료
        지금까지 국내의 살충제 등록 및 관리는 농촌진흥청과 식품의약품안전처에 의해 이루어져 왔다. 농업해충을 방제하는 목적인 농약에 대해서는 농촌진흥청에 각 농약의 이화학적 분석자료, 약효 및 약해 시험성적서, 인축독성 시험성적서, 환경생물독성 시험성적서 및 잔류성 시험성적서 등을 구비하여 신청하며, 농촌진흥청에 등록된 농약은 농업해충의 방제를 비롯하여 검역해충(농림축산검역본부 관할) 및 산림해충(산림청 관할)의 관리 및 방제에도 사용된다. 이에 반하여, 기존 식품의약품안전처에서 ‘의약외품’이라는 명칭으로 등록 및 허가를 담당해오던 가정용 살충제(정식 명칭: 구제·방지·유인살충제) 및 방역용 살충제(정식 명칭: 감염병예방용 살충제)는 2019년 1월 기준으로 ‘살생물제’ 라는 명칭으로 환경부로 관리주체가 이관되게 되었으며, 향후 살생물제 물질 및 제품의 허가는 국립환경과학원을 통해 이루어지는 것으로 변경되었다. 관리주체 이관 및 관련법 변경과 관련한 많은 변화가 이루어졌고, 향후 더 많은 변화가 이루어 질 것으로 예상된다. 예를 들어, 기존 의약외품에서는 모기, 바퀴, 진드기, 벼룩 등 질병을 매개하는 위생해충만을 방제의 대상으로 지정하였으나, 살생물제는 가옥 또는 구조물 내 서식하는 모든 곤충 및 절지동물을 방제하는 화학제품은 살생물제로 보고 있으며, 이로 인해 기존 공산품으로 판매되며 법적인 기준이 없었던 좀벌레 방제제, 쌀벌레 방제제 및 날벌레 방제제 등의 판매를 위해서는 향후 살생물제 등록을 거쳐야만 하는 것으로 규정의 변화가 이루어지게 되었다. 이들 신규 살생물제 포함군에 대한 효력시험법 개발 등이 필요한 상황이며, 관련한 제품개발 연구인력, 허가 관련 행정인력, 사육 및 평가 전문가 등 다양한 분야의 신규 인력이 필요한 상황이다. 이러한 변화를 맞이하는 시점에서, 살충제에 대한 연구 및 규정 마련을 위해 해당학회 회원들의 역할과 책임에 대해 살펴보고자 한다.
        3.
        2016.04 구독 인증기관·개인회원 무료
        The penetration-enhancing effect of a binary mixture of rosemary essential oil constituents, and its correlation to increased toxicity were investigated. GC-MS analyses revealed that the major constituents of rosemary essential oil were 1,8-cineole and camphor, and a binary mixture of them showed synergistic insecticidal activity via topical application in third instar larvae of the cabbage looper, Trichoplusia ni. In the mixture, penetration of camphor was significantly enhanced both in vivo and in vitro, whereas that of 1,8-cineole did not change much compared to individual application. Injection into hemocoel of fifth instar larvae indicated that camphor was more toxic than 1,8-cineole, although it was less toxic than 1,8-cineole when applied topically. A possible mechanism for enhanced penetration of camphor by 1,8-cineole is reduced surface tension of the mixture. Contact angles of 50% acetonic solutions on a layer of beeswax showed that the surface tension of 1,8-cineole was lower than that of camphor. Another probable reason is a change of camphor from solid to liquid status, when mixed with 1,8-cineole. This is the first report attempting to explain the synergistic insecticidal interaction of essential oil components, from a physiochemical perspective.
        4.
        2009.06 KCI 등재 구독 인증기관·개인회원 무료
        The gap between the increasing amount of raw sequence data and qualified biological information is widening: it is not possible to provide qualified annotation for new genomes with the same speed at which sequences are generated -- especially with next generation sequencing technologies. Additionally, managing the huge number ofavailable bioinformatics algorithms represents a challenge of its own. Thus, a systemwhich provides maximum annotation quality with approved methods in a minimum of time is absolutely critical as the basis for the R&D pipeline in industrial biotechnology. Also using those various genome annotation, comprehensive knowledge of a fungal’s biosynthetic capacities is the indispensable basis of its usefulness in the biotechnology research. Comparative genomics is on the rise as a potent tool in molecular biology. The publicly available genomes from yeasts and several fungal species are used to comparative genomics method for discovery of functional information in our research. Also we had integrated information from different data sources to dynamically build semantic networks representing up-to-date knowledge, which can then be mined and analyzed. Through those methods, we could inspect the common features and uniques between yeasts and fungal species in the new aspect.
        5.
        2006.09 구독 인증기관·개인회원 무료
        Cube textured Ni substrate were fabricated for YBCO coated conductors from the initial specimens prepared by powder metallurgy (P/M) and casting and the effects of annealing temperature and reduction ratio on texture formation and microstructural evolution were evaluated. The initial specimens were rolled and then annealed in the temperature at . A strong cube texture formed for P/M substrate, and the degree of texture did not significantly vary with annealing temperature of . On the other hand, the texture of casting substrate was more dependent on the annealing temperature and twin texture and several minor texture components started to form at .
        6.
        2006.09 구독 인증기관·개인회원 무료
        We fabricated YBCO film using a TFA-MOD method. In order to enhance the reaction kinetics and to control the formation of the second phases, and powders were used as precursors (the so called "211 process"). The films were calcined at and then fired at in a 12.1% humidified atmosphere. We found that the microstructure varied significantly with the firing temperature. The textures of all of the films were similar and mainly biaxial. For the film fired at , the critical current was obtained to be 39 A/cm-width (corresponding critical current density is 2.0 MA/).
        7.
        2006.09 구독 인증기관·개인회원 무료
        We fabricated Bi-2212/ composite superconductors and evaluated the effects of the powder mixing method and melting temperature on their microstructure and superconducting properties. The Bi-2212 powders were mixed with by hand-mixing (HM) and planetary ball milling (PBM) and then the powder mixtures were melted at , solidified, and annealed. We found that the powder mixture prepared by PBM was finer and more homogeneously mixed than that prepared by HM, resulting in more homogeneous microstructure and smaller and second phases after annealing.