• 제목/요약/키워드: Compositional Structure

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Atom Probe Tomography를 이용한 나노 스케일의 조성분석: I. 이론과 설비 (Nano Scale Compositional Analysis by Atom Probe Tomography: I. Fundamental Principles and Instruments)

  • 정우영;방찬우;구길호;박찬경
    • Applied Microscopy
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    • 제41권2호
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    • pp.81-88
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    • 2011
  • 최근 나노 영역에서의 구조분석과 조성분석의 중요성이 증대되고 있으나, 기존의 분석장비들은 한계에 부딪히고 있다. 최근 개발된 APT는 nm 이하의 공간분해능과 수십 ppm수준의 detection limit으로 원소의 3차원분포와 조성정보를 제공해 주는 분석장비로서, 이러한 기존 분석의 한계를 극복할 수 있는 새로운 분석장비이다. 그러나 국내에는 아직 잘 알려지지 않아 활용이 미비한 실정이다. 따라서, 본 논문에서는 APT에 대한 이해를 돕기 위해 APT분석의 원리와 시편준비에 대해 소개하였다.

미궁과 미로의 구성원리 분석을 통한 현대 건축 공간특성에 관한 연구 - 전시 공간을 중심으로 - (A Study on the Spatial Characteristics of the contemporary architecture through the Compositional Principle in Labyrinth and Maze - Focused on the Exhibition Space -)

  • 임종엽;김윤겸
    • 한국실내디자인학회논문집
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    • 제14권3호
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    • pp.12-19
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    • 2005
  • In contemporary society, Labyrinth and maze are used with the same meaning. They are also used by translating various meanings. But labyrinth and maze are exactly different meaning. The purpose of this study is to inquire about difference for understanding essential meaning between labyrinth and maze. First of all, this study is to grasp composition principles and the characteristics of space through example of labyrinth and maze from ancient to contemporary, prescribe about essential meaning between labyrinth and maze and examine contemporary architecture which is fit for essential meaning. As compositional Principle in labyrinth and maze applied to comtemporary architecture, the labyrinth are centrality, property of one-sideness, determinable space, on the contrary the maze are out of centrality, property of multi-sideness, indeterminable space. Finally, The aim of this paper is analyze exhibition space that suit to the characteristics of composition principle and find the characteristics in labyrinth and maze. Examples of exhibition space are Aldo Van Eyck's 'Sculpture Pavilion', Kazuyo Sejima's '21st Century Museum of Contemporary Art', Ben van berkel's'Museum Het Valkhof'. These research we studied the visitor's circulation and the architectural structure in exhibition space with the spatial characteristics and the compositional principle in labyrinth and maze.

방전플라즈마소결에 있어서의 (Ti+Ni) 혼합불말의 소결거동 (Sintering Behavior of (Ti+Ni) Powder Mixture during Spark-Plasma Sintering)

  • 김지순;양석균;정순호;강지훈;권영순
    • 한국분말재료학회지
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    • 제11권1호
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    • pp.55-59
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    • 2004
  • TiNi bodies were produced from (Ti+Ni) powder mixture by spark-plasma sintering procerg. The sintering behavior was investigated through the measurement of change in density, densification rate, phase analysis and microstructure. Irrespective of heating rate, sintered bodies with above 97% relative density could be obtained. TiNi with B2 structure was confirmed as the major phase and $Ti_2Ni,\;TiNi_3$, unreacted Ti, Ni as the second phase. Increase in heating rate suppressed a formation of intermediate phase during sintering process. Increase in holding time at sintering temperature led to a compositional homogenization.

Le Corbusier, W. Grupius, F. L. Wright의 주거건축에서 공용공간 디자인에 관한 연구 (A Study on the Common Space Design for the Housing Architecture of Le Corbusier, W. Grupius, F. L. Wright)

  • 정재욱
    • 한국실내디자인학회논문집
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    • 제22호
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    • pp.110-116
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    • 2000
  • After the industrial revolution, interior of living space have shifted from the spacial structure of existing wall partitions to visually and spacially continuous open space. And these open space can be recognized mostly in the common space of housing architecture of living, dining, and kitchen space composition. In order to understand the characteristics of space and compositional method, the works of Le Corbusier, W. Grupius, and F.L. Wright in their living, dining, and kitchen space design have been analized from the collected materials to make evaluation for the similarities and significance of their space compositional factors. therefore, this study is to analize space composition and design factor of the modern housing space of Living, Dining, and kitchen space variation and character of open space design factor for the practical use as an index of designing contemporary living space.

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Deposition and characterization of compositional gradient CrNx coatings prepared by arc ion plating

  • Zhang, Min;Kim, Kwang-Ho
    • 한국표면공학회:학술대회논문집
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    • 한국표면공학회 2009년도 춘계학술대회 논문집
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    • pp.177-181
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    • 2009
  • Compositional gradient CrNx coatings were fabricated using arc ion plating in Ar/$N_2$ gaseous mixture by gradually increasing $N_2$ flux rate from 0 to 120 SCCM. The effect of negative substrate bias on the film microstructure and mechanical properties were systematically investigated with XRD, GDOES, and SEM. The results show that substrate bias has an important influence on film growth and microstructure of gradient CrNx coatings. The coatings mainly crystallized in the mixture of hexagonal $Cr_{2}N$ and fcc CrN phases. By increasing substrate bias, film microstructure evolved from an apparent columnar structure to an equiaxed one. With increasing substrate bias, deposition rate first increased, and then decreased. The maximum of deposition rate was 15 nm/min obtained at a bias of -50V.

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Compositional SIMS Depth Profiling of CIGS film

  • 김경중;황혜현;장종식;정용덕
    • 한국진공학회:학술대회논문집
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    • 한국진공학회 2011년도 제40회 동계학술대회 초록집
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    • pp.367-367
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    • 2011
  • CIGS solar cell with copper, indium, gallium and selenium is a second generation solar cells for the lowering of the manufacturing cost. The relative ratio of the four elements is one of the most important measurement issues because the photovoltaic property of CIGS solar cell depends on the crystalline structure of the CIGS layer. However, there is no useful analysis method for the composition of the CIGS layer. Recently, AES depth profiling analysis of CIGS films has been studied with a reference material certified by inductively coupled plasma optical emission spectroscopy. However, there are some problems in AES depth profiling analysis of CIGS films. In this study, the in-depth profiling analysis was investigated by secondary ion mass spectrometry (SIMS) depth profiling analysis. We will present the compositional depth profiling of CIGS films by SIMS and its applications for the development of CIGS solar cells with high efficiency.

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수돗물 가열시 형성되는 흑색 침전물의 성분 분석 (Compositional and Morphological Analyses of Black Precipitate Formed on the Surface of Heating Appliance)

  • 백미화;김동수
    • 한국물환경학회지
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    • 제23권2호
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    • pp.184-187
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    • 2007
  • The compositional and morphological analyses have been carried out by employing XRD, EPMA, and SEM for the black-colored precipitate which is formed on the surface of heating appliances by heating tap water. XRD analysis has showed that the precipitate was mainly composed of calcium carbonate with a crystal structure of calcite. Also, small amounts of precipitate by SEM showed that the microscopic shape of the precipitate was usually angular spherical.

The preparation of skin analogue composition having the liquid crystalline structure and its cosmetic applications

  • Lee, Dong-Kyu;Jeong, Kwan-Young
    • 한국응용과학기술학회지
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    • 제30권2호
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    • pp.215-224
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    • 2013
  • Recently, many cosmetic researchers have been focused on the development of high functional cosmetics including anti-wrinkle and whitening. In these studies, they couldn't afford to pay a deep attention to stable encapsulations for unstable materials and efficient drug deliveries for them. Particularly, in order to show a degree of instant effects as cosmetics, they can't also ignore moisturizing effect enough to satisfy customers just after applying and its maintenance by improving the function of skin barrier as well as above two effects. Therefore, skin analogue systems have attracted considerable attention in the view of structural and compositional similarity to intercellular membrane in stratum corneum. And, some models for skin analogue composition were developed to improve the function of skin barrier, stably encapsulate unstable materials such as retinol, vitamin B, C, E, etc., and control their skin penetration in order to show good effects as cosmetics. In this study, we suggest the new skin analogue model having the compositional similarity as well as conventional structural ones. Our skin analogue membrane(SAM) is mainly composed of ceramide/ cholesterol/phosphatidylcholin/fatty acids and its structural defects are compensated by including cholesterol amphiphile and controlling the ratio of ceramide/cholesterol. It was possible to confirm the formation of skin analogue membrane having highly-densed multilamella structure and compare them according to the change of each ratio with a polarized microscope, X-ray diffraction. More detaily, we observed their structures with a electron microscope(TEM). Finally, we dispersed them in excess of continuous water phase, observed the formation of maltese-cross liquid crystalline and measured the efficiency of drug deliveries and moisturizing effects.

애니메이션 영상화면에 나타난 카메라의 구도적 관점 (비언어 커뮤니케이션을 중심으로) (Compositional Viewpoint Of Camera Appears In Animation Picture Screen (Revolves Around Nonverbal Communication))

  • 장동렬
    • 만화애니메이션 연구
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    • 통권33호
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    • pp.127-152
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    • 2013
  • 본 논문은 비언어커뮤니케이션의 접근방법을 통해 애니메이션작품을 카메라의 구도적 관점에서 분석하고 이를 통해 수용자와 행위자간의 커뮤니케이션에 있어서 보다 효과적인 상호작용을 모색하기 위한 접근방법에 대한 연구이다. 연구내용으로는 미야자키 하야오의 대표작 중에 하나인 '하울의 움직이는 성'을 서사구조와 영상화면 해석의 측면에서 기호학적으로 접근하여 분석하였다. 기호학적 분석방법으로는 시퀸스 분석, 행위주 분석, 이접 연접분석 그리고 미디어 기호학의 '숏'을 이용한 분석을 하였다. 이를 통해 상호작용하는 부호적 특성이 관객과 작품을 연결하는 요인으로 작용한다는 사실을 도출하였다. 본 연구는 카메라의 구도적 관점에서 비언어커뮤니케이션의 적용방법을 사용하여 애니메이션 영상화면을 분석하고 이를 통해 행위자, 작품, 수용자간의 소통에 대해 보다 효과적인 새로운 접근 방법을 제시한다.

건축공간 인식에 대한 미학적 구성범주에 관한 연구 (A Study on the Compositional Scope of Aesthetic Cognition in Architectural Space)

  • 이용재
    • 한국실내디자인학회논문집
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    • 제20호
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    • pp.114-120
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    • 1999
  • The study on architecture can be started with the aesthetic attitude which cognizes it as the art of the space. Architectural space as the subject of the aesthetical study, however, has been ignored such a long period though it should be centered of the whole architectural theory. Even it has not been dealt with independently but just only as a part of aesthetic or artistic field. Also it is true that academic approach to the architectural space as per the aesthetic cognition has not been done so satisfactorily. This study, therefore, aims at prescribing compositional scope from aesthetic cognition of architecture understanding the rational function, mechanic structure, and artistic beauty by man's subject standard of judgement as per the space, the special sphere of architecture. For the absolves, the architectural space in this study is not approached as the spatial art with the meaning of being included the arts general, but with the meaning of intrinsic peculiarity of architecture, based both in practicality of scientific concept and arts of the aesthetic notiov. In order words, the essence of architecture can be prescribed as the architectural realities as the functional, formal and symbolical space not simply the spatial art, and its real but aesthetic meaning can be cognized aesthetically.

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