• Title/Summary/Keyword: PE fence

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A Study on PE Fence Design Using Pung-hyeol of the Joseon Dynasty Furniture (조선조 가구의 풍혈을 활용한 PE 휀스 디자인 연구)

  • Kim, Chung Ho;Kang, Ho Yang
    • Journal of the Korea Furniture Society
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    • v.24 no.2
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    • pp.148-155
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    • 2013
  • Appear on the furniture design concept of the Joseon Dynasty Pung-hyel design was developed that is imaged by implication. Was enough of our culture, tradition and the wisdom of our ancestors to the development of a design that reflects the traits to fit the purpose of each form to proceed. Based building materials, technology, and how to identify and develop products as competitive PE fence, and at the same time to develop an international product design is based. Was designed with functionality and mass production to be faithful as a function fence productivity. Formative elements where you can rub shoulders with the modern urban environment alive excavated features leads in the traditional culture, aesthetics, design emphasized a new sense of harmony. Improvements were becoming increasingly aware that traditional culture of Korea's own traditional forms of social concern of modern design. Other products and take advantage of the traditional pattern, with figurative motifs and differentiation, and faithful to its original function as a fence brings out the basic elements of the visual motif has a distinctive beauty.

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Field Application Techniques of Simultaneous Mating Disruptor Against Grapholita molesta and G. dimorpha (복숭아순나방과 복숭아순나방붙이에 대한 동시 교미교란제의 현장 적용 기술)

  • Cho, Jum-Rae;Park, Chang-Gyu;Park, Il-Kweon;Kim, Yonggyun
    • Korean journal of applied entomology
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    • v.57 no.3
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    • pp.209-220
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    • 2018
  • Mating disruption (MD) has been widely used to effectively control Grapholita molesta in apple orchards. A simultaneous mating disruption (SMD) techniques have been developed to control both G. molesta and G. dimorpha. This study was performed to determine the practical parameters to apply the SMD technique to field conditions. To determine the application amount of SMD lures, a dispenser containing 10 mg pheromone was placed at different numbers of trees in an orchard. Application at every other tree (= one dispenser per two trees) was relatively safe to expect effective MD efficiency in both wax and polyethylene (PE) formulations. One time application at the end of March was enough to maintain a year round MD efficacy against both species. A fence treatment using food trap was applied to prevent any immigratory mated females from nearby untreated regions. To enhance the food trap by adding host-derived secondary compounds, terpinyl acetate (TA) was screened to be effective to attract females of Grapholita molesta among six compounds contained in apple fruit extracts. Among different TA concentrations, 0.05% TA treatment was the most effective to attract the adults. A mixture of TA and sugar was effective to attract and kill females and called FAKT (female attract-to-kill techniques). FAKT was treated at approximately 6 m interval at the edge of the apple orchards. The females trapped by the FAKT included mated females possessing vitellogenic oocytes. SMD supplemented with FAKT maintained the high MD efficacy and significantly suppressed leaf damage induced by the two insect pests compared to control or single SMD treatment.