• 제목/요약/키워드: structure of the course

검색결과 623건 처리시간 0.025초

Sesquiterpenoids from the Rhizome of Curcuma zedoaria

  • Hong, Chai-Hee;Kim, Young-heem;Lee, Sang-Kook
    • Archives of Pharmacal Research
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    • 제24권5호
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    • pp.424-426
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    • 2001
  • In the course of searching for biologically active sesquiterpenoids from Curcuma genus, two sesquiterpenoids were isolated from the rhizome of Curcuma zedoaria (Zingiberaceae). Their structures were identified as ar-turmerone (1) and $\beta$-turmerone (2). The structure elucidation of compounds 1 and 2 was carried out by comparison of their physical and spectral data with previously reported values.

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Cirsiumaldehyde from Gastrodia elata

  • YunChoi, Hye-Sook;Pyo, Mi-Kyung;Park, Kyung-Mi
    • Natural Product Sciences
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    • 제3권2호
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    • pp.104-105
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    • 1997
  • In the course of continous work on tubers of Gastrodia elata, a new constituent was isolated from the ethyl acetate soluble fraction prepared from the methanol extract. The structure of the compound was identified as ${\alpha},{\alpha}'-[bis-2-(5-carboxaldehydo)furanyl]-dimethyl$ ether from the elemental analytical and spectroscopic data. This compound was once isolated from Cirsium chlorolepis and named as cirsiumaldehyde. This is the first furan type compound isolated from Gastrodia elata.

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텍스트의 은유적 구조 (The Metaphorical Structure of the Text)

  • 박찬부
    • 영어영문학
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    • 제57권5호
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    • pp.871-887
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    • 2011
  • In Lacanian terms, the real, which is a non-representative Ding an sich, is indirectly approachable only in and through language. This 'speaking of the real' is made possible through a restoration of the missing link between one signifier, S1 and another signifier, S2, as is manifested in the Lacanian formula of metaphor. In Freudian terms of textual metaphor, the missing link is restored by substituting a new edition for an old edition of one's historical text of life. This is what this essay means by the metaphorical/dualistic structure of the analytic/literary text. And this is a way of talking about an intertextuality between literature and psychoanalysis in the sense of the 'text as psyche' and the 'psyche as text.' Applying the 'signifying substitution' to the Oedipus complex, the Oedipal child can find a meaning(s), "my erotic indulgement with my Mom is wrong" by metaphorically substituting S2: the Name of the Father for S1: the Desire of the Mother. This meaning leads to the constitution of the human subject and the formation of the incest taboo, one of the most significant distinctive features of the human being as distinguished from the animals. We can see a similar metaphorical structure of S1-S2 taking place in the literary texts such as Macbeth and "Dover Beach": in the course of the stage of life being substituted for the primal scene in the former, and the plain of Tucydides for a bed scene in the latter, respectively.

비선형 유한요소해석을 이용한 철근콘크리트 구조물의 내화성능평가 (Fire Endurance Estimate of Reinforced Concrete Structure Using Nonlinear Finite Element Method)

  • 변순주;임정순;황지욱
    • 한국방재학회 논문집
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    • 제6권1호
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    • pp.17-27
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    • 2006
  • 화재동안 구조물의 복잡한 거동을 이해하기란 쉽지 않다 때문에 화재이후의 철근콘크리트 구조물의 잔류 강도를 평가하는 것은 매우 힘든 일이다. 그러나 교통시설의 화재로 인한 피해는 매우 크므로 화재에 대한 안전성 확보는 결코 간과해서는 안 될 중요한 요소이다. 따라서 이런 큰 피해를 줄이기 위한 철근콘크리트 구조물에 대한 정확한 내화성 평가 방법이 절실히 요구된다. 본 연구에서는 철근콘크리트 구조물의 내화성 평가를 위한 비선형 유한요소해석방법의 유효성을 증명하였고, 비선형 유한요소해석방법에 의한 지하차도 내화성 평가 결과를 ACI 216R-89의 결과와 비교하였다.

Rietveld Analysis of Nano-crystalline MnFe2O4 with Electron Powder Diffraction

  • Kim, Jin-Gyu;Seo, Jung-Wook;Cheon, Jin-Woo;Kim, Youn-Joong
    • Bulletin of the Korean Chemical Society
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    • 제30권1호
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    • pp.183-187
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    • 2009
  • The structure of nano-crystalline $MnFe_2O_4$ was determined and refined with electron powder diffraction data employing the Rietveld refinement technique. A nano-crystalline sample (with average crystal size of about 10.9 nm) was characterized by selected area electron diffraction in an energy-filtering transmission electron microscope operated at 120 kV. All reflection intensities were extracted from a digitized image plate using the program ELD and then used in the course of structure refinements employing the program FULLPROF for the Rietveld analysis. The final structure was refined in space group Fd-3m (# 227) with lattice parameters a=8.3413(7) $\AA$. The reliability factors of the refinement are $R_F$=7.98% and $R_B$=3.55%. Comparison of crystallographic data between electron powder diffraction data and reference data resulted in better agreement with ICSD-56121 rather than with ICSD-28517 which assumes an initial structure model.

저자서지결합분석에 의한 문헌정보학의 지적구조 분석에 관한 연구 (A Study on the Intellectual Structure of Library and Information Science in Korea by Author Bibliographic Coupling Analysis)

  • 박지연;정동열
    • 정보관리학회지
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    • 제30권4호
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    • pp.31-59
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    • 2013
  • 본 연구는 저자서지결합분석을 사용하여 한국 문헌정보학의 1990년대와 2000년대 지적구조와 그 변화를 분석하는데 목적을 두고 있다. 이를 위해 첫째, 군집분석, 다차원척도법을 통하여 시기별 세부 주제 영역을 밝혔다. 둘째, 네트워크 분석을 통해 세부 주제 영역 간 관계를 시각화하고 전역 중심성이 높은 주제 영역을 확인하였다. 셋째, 1990년대와 2000년대 지적구조 비교를 통해 시간의 경과에 따른 주제 영역의 흐름을 규명하였다.

육계 통합체계(계열화) 전개 과정상의 사이비 계열주체 문제 (Pseudo-Integrators in the Evolution of Bores′s Broiler Integration)

  • 김정주;박영인
    • 한국가금학회지
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    • 제20권2호
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    • pp.107-114
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    • 1993
  • The structure change in the broiler industry of Korea has been taking place very rapidly toward the direction of integrated production and marketing system. During the course of the evolution into the integrated structure, however, a number of small business entities, uncountable nationally but a minimum of a dozen, that previously engaged in the supply of production factors or live bird transaction also tended to get involved in the new system as a disguised or pseudo-integrator, having brought a lot of problems not only to the farmers but also to the development of integrated structure. The pseudo-integrator is generally characterized by limited functions in such a way of supplying chicks and feeds to and collecting grown birds from farmers under the contract at a fixed farmer's payment in practically the same pattern as a partial or quasi-integration, which intends to act as if an integrator in a stratagem to simply enjoy a margin simply from selling supplies and buying products for a certain period of time. The grower making a contract with appears to be a farmer who used to be an Independent and speculating but not able to join in the normal system of evolving integration. The problems of a pseudo-integrator center on the financial loss to a contract farmer, because the falsified integrator has to become easily bankrupt and run away when the price of live broiler continually stays below the cost of production, even though he is able to make a tremendous profit otherwise which is the real purpose of the operation for. It is true that the volatile market, fluctuating the price up more than doubled in a month and down to a half in a few weeks, makes the pseudo-integrator find the room for such a fraudulence. In addition, its activity also adversely affect the evolution of the integration due to rather negative image on structure change in general. It is recommended that the farmers need to better understand the real picture of the integrated system so as not to be swindled by a disguised, small scale agribusiness agent. By the same token, it is also equally required to have the whole industry integrated completely as early as possible. The Joint effort to get rid of pseudo-integrators' problems shall be put for the industry development moving toward the integration. No doubt a pseudo-integrator must be a temporary player for chance emerging during the course of structure change into the integrated, though.

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이종 금속간의 용착마모에 관한 연구 (A study on the depositional wear between different metals)

  • 신문교;이우환
    • Journal of Advanced Marine Engineering and Technology
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    • 제9권1호
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    • pp.74-88
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    • 1985
  • The wear becomes the most complicated cause of making various machineries short lives. In the studies by many scholors so far, the accurate and perfect methods to eliminate it completely are not found yet owing to many affected factors. On this view point of Depositional Wear, the wear test with seven different specimens from the part of frequent usage of which are carbon steel, nickel, copper, aluminum, zinc, lead and tin was attempted to make clear the relation between the wear of different metals and their melting point, crystal structure, sliding speed, load and lattice factors. The results of this study are summerized as follows; 1) Worn amount of each metal is maximum when each metal is same quality. 2) The easier becomes the the formation of solid solution in the course of friction proceeding, the more it results in worn amount of each metal. 3) The samer is each metal in crystal structure as well as lattice factor, the more it results in worn amount of each metal. These results might be of use in designing machineries, selecting materials and operating machineries.

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생물지역계획 이론의 적용가능성 (An Applicability of Bioregional Planning Theory)

  • 장병관
    • 한국조경학회지
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    • 제28권4호
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    • pp.54-65
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    • 2000
  • The purpose of this paper is to examine the concept, general framework, planning process of bioregion, and bioregional impacts on landscape planning of future and to discuss the application possibility of landscape planning. Bioregionalism is defined in the course of following: knowing the land, learning the lore, developing the potential, liberating the self. Bioregional paradigm was composed of policy system insisted on diversity and decentralization based on region and community, sustainable economy structure focused on conservation and stability, and society structure through cooperation with common consciousness in the community. A general bioregional framework was organized to be able to achieve a sustainable future with interaction for humans being, other living things, and important earth life system. Bioregional mapping should be able to explain three important aspects about how localised and sustainable cultures would exist: to define the external boundaries, to describe forces of energy, and give a hint for th productive capability. In conclusion, according to the result of reviewing the total environmental planning, bioregional paradigm, examples of projects, technique of bioregional mapping, and actions of Nongovernmental Organizations(NGOs). this study is helpful to show an applicability of bioregional planning theory in Korea

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원소 변환을 이용한 한글 패턴의 구조 분석 (A Syntactic Structure Analysis of Hangul Using the Primitive Transformation)

  • 강현철;최동혁;이완주;박규태
    • 대한전자공학회논문지
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    • 제26권12호
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    • pp.1956-1964
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    • 1989
  • In this paper, a new method of Hangul recognition is proposed to solve the problems of misrecognition owing to the contacts of FCEs (Fundamental Character Elements) in a Hangul pattern. Structures of FCFs are represented with PAG(Programmed Array Grammar) to recognize an input pattern on 2-D. array of pels., and the unnecessary deformation of the conventional approach can be eliminated by using PEACE parsing which extracts primitives and computes attributes in the course of analyzing the structure of an input pattern. Also, primitive transformation at contacts can afford to confirm all the possible structures of an input pattern and solve the problem of misrecognition owing to the contacts of FCEs. The recognition rate of proposed method for printed Hangul characters shows 96.2% for 1978 Gothic-letters and 92.0% for 1920 Myng-style-letters, respectively.

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