• Title/Summary/Keyword: main components

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Essential Oil Analysis of Illicium anistum L. Extracts

  • Min, Hee-Jeong;Kim, Chan-Soo;Hyun, Hwa-Ja;Bae, Young-Soo
    • Journal of the Korean Wood Science and Technology
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    • v.45 no.6
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    • pp.682-688
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    • 2017
  • Fresh japanese anise (Illicium anisatum L.) tree leaves were collected and ground after drying. The essential oils of the leaves were analyzed by gas chromatography-mass spectrometry (GC-MS) using headspace (HS) and solid phase-microextra (SPME) methods. Volatile components of the leaves were identified 21 and 65 components in HS and SPME, respectively. The main components of the essential oils obtained by HS method were eucalyptol (36.7%), (+)-sabinene (15.61%), ${\delta}$-3-carene (6.87%), ${\alpha}$-pinene (6.07%), ${\gamma}$-terpinen (5.72%), ${\alpha}$-limonene (5.26%), ${\beta}$-myrcene (4.13%), ${\alpha}$-terpinene (4.04%) and ${\beta}$-pinene (3.73%). The other components were less than 3.5%. SPME method also showed that eucalyptol (17.88%) was main. The other were 5-allyl-1-methoxy-2 (13.29%), caryophyllene (6.09%), (+)-sabinene (5.60%), ${\alpha}$-ocimene (4.89%) and ${\beta}$-myrcene (3.73%), and the rest were less amounts than 3.5%. This work indicated that many more volatile components were isolated, comparing to the previous literature data and that SPME method was much more effective than HS method in the analysis of the volatile components.

The effects of the components of a fashion show on viewing satisfaction (패션쇼 관람만족에 영향을 미치는 패션쇼구성요인에 관한 연구)

  • Choi, Hyun-Joo;Shin, Young-Ok
    • Journal of Fashion Business
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    • v.12 no.1
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    • pp.45-62
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    • 2008
  • The purpose of this study is to identify how the components of a fashion show can influence the perception of the spectators, and what the spectators most like in a fashion show. Through the analysis on the literature reviews and in-depth interviews with professional's organizing fashion shows we established a list of the main components, which allowed us to set up a questionnaire. The results regarding the viewing satisfaction of the spectators at a fashion show were investigated and came out as follows: First, the components of fashion show are generally viewed to be four factors: the program, the directing, the model, and the sets. These four factors are influencing the perception of the spectators and are very important to the success of a fashion show and the enjoyment of a fashion show by spectators. Second, it is shown to us that the most influential factor for the perception is 'the directing'(stage scenery, background music, lighting, effects etc.), and the next is 'the sets'(convenience seat, display, service facilities etc.). So, in order to raise the level of satisfaction for the spectators, it is advisable to concentrate on these two main factors. Finally, we would suggest that the organizer of a fashion show shall carefully analyze how spectators understand and perceive the components of a fashion show. This study provides information about how the components of a fashion show can influence the spectator's perception and presents suggestions on how to improve a fashion show by reorienting it towards the satisfaction of the spectator. In addition, there needs to be a strategy by customer satisfaction experience to reinforce a customer-oriented fashion show and heighten a viewing satisfaction for spectators.

The Characteristics of Chemical Components and Acidity in the Precipitation at Kimhae Area (김해지방의 강수의 산도 및 화학적 성분 특성)

  • 박종길;황용식
    • Journal of Environmental Science International
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    • v.6 no.5
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    • pp.461-472
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    • 1997
  • This study was carried out to investigate the characteristics of chemical components and precipitation at Kimhae area from March, 1992 to June, 1994. The pH values, concentration of soluble ions($Cl^-$, $NO_2^-}$ $NO_3^-}$, $NO_4^{2-}$-, $PO_4^{3-}$. $F^-$, $Mg^{2+}$, $Ca^{2+}$, $Mn^{2+}$, $K^+) and non-soluble metals(Cr.Si. Zn, Pb, Cu, Fe, Mn, Mg, Ad. V. Cal were measured by pH meter, IC (ion Chromatography) and ICP(Inductively Coupled Plasma). The data were analyzed by the dally. hourly distribution characteristics of acidity and chemical components, as well as the correlation between them. The results are as follows. 1. The pH range of precipitation was from 3.45 to 6.80 in Kimhae area. and average value was pH 4.62 and main chemical components were $SO_4^{2-}$, $Cl^-$, $NO_3^-$. The highest pH value and concentration appeared in initial rain, which might result from urbanlzation and industrialization in this area and long term transportation from China. 2. The hourly correction distribution of main anions related to pH value In the rainwater showed $SO_4^{2-}$ > $NO_3^-$ > $Cl^-$. Hourly concentration of heavy metal and each ion was highly correlated with pH in the precipitation.

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A Study on Applicable External Color Design of High-storied Apartment House Considering Street Components (주변가로 구성요소를 고려한 고층집합주택의 적용 가능한 외관색채에 관한 연구)

  • Lee Cheong-Woong;Park Sung-Jin;Kim Mu-Oh;Park Hang-Ja
    • Journal of the Korean housing association
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    • v.17 no.3
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    • pp.123-131
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    • 2006
  • This study examined types and color conditions of street views through relationship of high-storied apartment house to street components which has great visual influence on urban street view and requires harmony with street environment as background factor and conducted positive experiment with high-storied apartment houses located at housing site development districts in Gwangju Metropolitan City since 1990s in order to set applicable color ranges in designing external colors of high-storied apartment houses which became background of street view by types. Consequently, in image changes of four factors of main colors in classified street types, P, RP, R and YR colors showed high average values in naturalness, harmony and unity and GY, G, BG and B colors showed dichotomy with low average value, but image of personality showed generally low average value. RP, R and YR colors showed higher adaptability and GY, G and BG colors showed lower adaptability. It was confirmed that according to adaptability of main colors used in high-storied apartment houses by street types, there was difference of appropriate color range in street components and external colors of high-storied apartment houses by street types.

New analysis method of electrostatic lens for CRT

  • Seok, J.M.;Ham, Y.S.;Lee, J.I.
    • 한국정보디스플레이학회:학술대회논문집
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    • 2002.08a
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    • pp.395-398
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    • 2002
  • The spherical aberration and optical integer (f) of the electron gun's main lens in color CRT is obtained, using electron beam trajectory. A spherical aberration is obtained from the relation between the object plane and the image of a beam trajectory. To analyze beam profile, 3rd and 1st order coefficient were obtained and used. It is shown that, in practice, they are applied to electron gun design.

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The Quality Certification of Railway Components for Safety Guarantee (안전성 확보를 위한 철도용품의 품질인증)

  • Kim Jeongguk;Kim Jin-Hwan;Kwon Sung-Tae;Baek Seung-Koo
    • Proceedings of the KSR Conference
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    • 2005.11a
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    • pp.27-31
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    • 2005
  • In order to guarantee the safety of railway, the Railway Safety Law (RSL) and ordinances have been enforced. In RSL, the quality certification is required to guarantee the safety and performance of railway components. Therefore, in this investigation, the detailed guidelines and main contents for the enforcement of quality certification for railway components will be suggested, and the detailed items including the procedures, subjects, management, etc., will be addressed.

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Feasibility Check of Maintenance Period by The Operating Reliability of EMU-Focusing on the Main Components of Ansan Line EMU- (전기동차의 운행 신뢰성을 통한 유지보수주기의 타당성 검토 -안산선 전기동차의 주요부품을 중심으로-)

  • Park, Su-Myung;Song, Moon-Shuk;Son, Young-Jin;Lee, Hi-Sung
    • Proceedings of the KSR Conference
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    • 2011.10a
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    • pp.1412-1417
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    • 2011
  • Safety is soaring up as a core value in accordance with the recent improvement of operating speed & incidents. rolling stock is a kind of system which works together with several components. one component has an effect on the sub-system, which can cause to the train safety operation, therefore reliability management of the major components of rolling stock is a kind of solution to the safety operation of train, but realistically maintenance in korea performed based on period rather than TBO of major components, but Japan does new maintenance system based on the major components, which optimizes maintenance tasks. actually Japan can apply to new maintenance system because they are ready in planning step but in this study, making a reliability data of major components and review the adaptability of new maintenance system to the rolling stock operating in Ansan line.

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Processing Conditions of Low Salt Fermented Squid and its Flavor Components 1. Volatile Flavor Components of Low Salt Fermented Squid (저염 오징어젓갈 제조 방법 및 향미성분 1. 저염 오징어젓갈의 휘발성 향기성분)

  • 최성희;임성임;허성호;김영만
    • Journal of the Korean Society of Food Science and Nutrition
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    • v.24 no.2
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    • pp.261-267
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    • 1995
  • Low-salted and fermented squid product, squid jeotkal was prepared with the addition of 10% salt and fermented for 50 day at 1$0^{\circ}C$. During fementation of squid, sensory evaluation and changes of volatile components were examined. Volatile flavor components in raw squid and low-salted squid jeotkal were extracted using a rotary evaporating system. The volatile concentrates were identified by GC and GC-MS. Major volatile components of raw squid were methional and 2-methyl-2-propanol. However, alcohols such as propanol, isoamyl alcohol, methionol and phenylethyl alcohol increased during the period of fermentation. The model reaction using microorganism was carried out, in order to confirm formation mechanism ofvolatile flavor compounds of the squid during fermentation. The main volatile components of Pseudomonas sp. D2 model system were isoamyl alcohol and acetoin. Those of Staphylococcus xylosus model system were isoamyl alcohol and phenylacetaldehyde.

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Comparison of Essential Oil Composition Extracted from Agastache rugosa by Steam Distillation and Supercritical Fluid Extraction (수증기 증류법과 초임계유체 추출법으로 분리한 배초향의 정유성분 조성 비교)

  • 김근수;김삼곤;김용하;김영회;이종철
    • Journal of the Korean Society of Tobacco Science
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    • v.23 no.1
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    • pp.65-70
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    • 2001
  • In order to compare the extraction patterns of main components from the raw material between the extraction methods, the aerial parts (dried stem, leaves, and flowers) of Agastache rugosa were extracted by SDE simultaneous steam distillation & extraction) and SFE (supercritical fluid extraction). Volatile components of essential oil and extract were identified by GC and GC-MSD. The contents of essential oil extracted by SDE were 0.49% in aerial part of Agastache rugosa on dry basis. Major components were methyl chavicol(27.2%), isomenthone(24.6%), hexadecanoic acid(13.0%). menthone (5.5%) among 32 kinds of components confirmed in essential oil. On the other hand, the contents of SFE extracts revealed 3.21% on dry basis, 6 times higher than those of SDE. Major components were isomenthone(15.3%), hexadecanoic acid(13.7%), methyl chavicol(12.6%), benzoic acid(3.8%) among 33 kinds of components identified in extract.

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A Study on Strategy to Develop Underground Space of Campus - Focused on the Analyses of the Campuses of Main Universities Nationwide - (캠퍼스 지하공간 개발전략 연구 - 국내 주요대학 캠퍼스 분석을 중심으로 -)

  • Park, Hoon
    • Journal of the Korean Institute of Educational Facilities
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    • v.19 no.6
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    • pp.3-14
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    • 2012
  • University campus has grown and developed along with history of human in connection with transition characteristics of city. In particular, reflecting the features in the times, the masterplan should explore its main roles today when international growth of university is pursued. In particular, center core and quad space, focusing on main components of campus such as main building, student union hall and main lecture facility, are the prototype of campus components and have been pursued to have importance in terms of shape and function as traditional campus space strategy. Recently, however, new strategy has been proposed to explore orders of campus utilizing the underground space focusing on main universities. Design of Hana Plaza of Korea University and Bekyangro of Yeonsei University, the targets of this study, actively explore this strategy. This study analyzed such strategies in terms of concept of space to obtain space, design trend of main universities at home and abroad, and viewpoint of integrated masterplan proposal. Conclusions from this study are as follows. First, concept of quad and center space found in the design of traditional campus is reinterpreted into new design aspects through development of underground space. Second, development of underground space is approached to overcome the limit of existing campus and to present the vision of universities 100 years ahead. Third, ever-changing complicated urban environment has been reflected in space configuration of campus and positioned as strategy to implement this as modern construction technique. Third, implementation of pedestrian-oriented campus has been pursued by reinforcing utilization of inclined topography of urban environment in Korea. This enables to obtain spaces for main activities of students and to implement the space where student support facilities are concentrated and activities are performed actively. Such features can be presented as conclusions of this study.