• 제목/요약/키워드: F.L. Wright

검색결과 26건 처리시간 0.024초

격리된 입지환경에서 형성된 한라산 흑오미자 자생군락의 유전변이 (Genetic Variation of Natural Populations of Schisandra nigra in Mt. Halla)

  • 이갑연;이석우;김세현;김판기;정동준;한상섭
    • 한국농림기상학회지
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    • 제3권1호
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    • pp.30-36
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    • 2001
  • 우리나라에 자생하고 있는 흑오미자 유전자원을 보존하고 육성하기 위하여, 제주도 한라산이라는 격리된 지역에 천연분포하고 있는 3개 집단을 대상으로 동위 효소분석에 의한 유전변이를 조사하였다. 1. 흑오미자 자생지 3개 집단의 4개의 동위효소에 대한 대립유전자 빈도와 분포는 6개의 유전자좌 가운데 Mdh-l과 Pgi-l을 제외한 모든 유전자좌에서 2개 이상의 대립유전자가 관측되어 Idh, Mdh-2, Mnr, Pgi-2에서 다형성을 보였다. Pgi-2를 제외한 Idh, Mdh-2, Pgi-l, Mdh-1, Mnr 유전자좌에서 동일한 대립유전자가 빈도가 가장 높은 주대립유전자로 나타났다. 2. 유전자좌당 대립유전자수(A/L)는 평균 1.7개의 값을 보였으며, 95%( $P_{95}$ ) 및 99%( $P_{99}$) 수준에서의 다형적 유전자좌의 비율은 38.9%와 50%, 평균 이형접합도의 관측치( $H_{0}$$^{./}$)와 기대치( $H_{e}$ )는 각각 0.141과 0.147로 나타났다. 흑오미자와 같이 분포구역이 매우 제한적이거나 멸종위기에 처한 식물종들은 유전변이량이 매우 적게 나타나는데 비해 흑오미자는 다소 많은 유전변이량을 보유하고 있는 것으로 나타났다. 3. 유전변이의 대부분이 집단 간 차이보다 집단내 개체간의 차이(92.6%)로 나타났으며, Wright의 F분석결과, $F_{IS}$$F_{IT}$ 값 모두 0에 가까운 값을 나타내어 흑오미자 집단이 Hardy-Weinberg 평형 상태에 근접해 있는 것으로 나타났다.다.

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20세기 비종교적 스테인드글라스의 전개과정과 건축적 특성 (The Process of Development and Architectural Characteristics of Secular Stained Glass in the 20th century)

  • 김정신
    • 한국실내디자인학회논문집
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    • 제17권1호
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    • pp.3-10
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    • 2008
  • This study is concerned with the process of development and architectural characteristics of secular stained glass in the 20th century. Stained glass had been architectural art from the origin. But it had declined since the Renaissance era, and began to revive in the early 20th century. Stained glass work is very flourish in Korea today, but it is still treated as simple decoration or 2-dimensional mosaic. Architect and interior designer even have little understanding of architectural character of stained glass. In order to recover the architectural nature of stained glass, I have considered the process of development of secular stained glass in the 20th century, and analysed the works of Frank Lloyd Wright, the postwar German artists, Georg Meistermann, Ludwig Schaffrath, Johannes Schreiter, and English artist, Brian Clarke. Major findings of the study are as followings : First, stained glass has come to life again from the secular glass painting decoration in the end of the 19th century, through Art-Nouveau, De Stil, Bauhaus in the beginning of the 20th century, and L'Art $Sacr\acute{e}$. Second, Frank Lloyd Wright, the postwar German artists and Brian Clarke have established the architectural concept and potentiality of the modem stained glass in the secular field. Third, They have done by coming back to the basic creative method by traditional lead-came technique in spite of the development of various materials and techniques. Forth, stained glass fundamentally has architectural characteristics as the characters of Space, Time, Place, Context, and they have showed the new possibility of stained glass by recovery of these characters.

20세기 전환기의 '아방가르드' 예술집단의 근대 '보편주의' 사상-표현에 관한 연구 -근대 예술적 자각을 향한 지적 융합, 보편철학의 발전적 전개- (A Study on the Modern 'Universal Philosophy' Idea-Presentation of 'Avant-garde' Art Groups at the Turn of the 20th's Century - On the Progress of the Philosophies, 'Universalism' as a Intellectual Synthesis toward Awakening for Modern Art -)

  • 오장환
    • 건축역사연구
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    • 제17권6호
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    • pp.87-98
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    • 2008
  • The purpose of this study is ultimately subjected to the Orientalism, even though this deals with some positive effects in the realm of art and architecture as the scope of study, because through which the relationship between two different cultures will be discussed. That is to say, this research focused not only on how the presentation of 'avant-garde' visual art, which is explained as formal 'purity' and 'abstraction' as the characteristics of modern arts, could be made in the transition to the 20th's World, but also on what is the role and meaning of Eastern thoughts, which is popular in that time, for the new philosophical background of the artistic revolution. As a result, this study found that a lot of 'avant-garde' architects such as F. L. Wright, M. Mahony in Prairie School and L. Sullivan, D. Burnham, J. Root in Chicago School, and Lauweriks, H. P. Berlage who introduced Wright's works into the Europe, had possessed the 'Universal Philosophy' including Unitarianism, Transcendentalism, Deism, and Theosophy which are all influenced by Oriental religions and thoughts through historic western philosophers, although it is generally well-known that W. Kandinsky and P. Mondrian were belong to that. Furthermore, they gave attention to the Oriental religions and thoughts in that time, eventually made a historical progressive process of unification of thoughts between East and West. In a word, the new universalism was the philosophical background that made the artist's idea and presentation on 'from Being into Becoming'.

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FRACTIONAL INTEGRATION AND DIFFERENTIATION OF THE (p, q)-EXTENDED MODIFIED BESSEL FUNCTION OF THE SECOND KIND AND INTEGRAL TRANSFORMS

  • Purnima Chopra;Mamta Gupta;Kanak Modi
    • 대한수학회논문집
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    • 제38권3호
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    • pp.755-772
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    • 2023
  • Our aim is to establish certain image formulas of the (p, q)-extended modified Bessel function of the second kind Mν,p,q(z) by employing the Marichev-Saigo-Maeda fractional calculus (integral and differential) operators including their composition formulas and using certain integral transforms involving (p, q)-extended modified Bessel function of the second kind Mν,p,q(z). Corresponding assertions for the Saigo's, Riemann-Liouville (R-L) and Erdélyi-Kober (E-K) fractional integral and differential operators are deduced. All the results are represented in terms of the Hadamard product of the (p, q)-extended modified Bessel function of the second kind Mν,p,q(z) and Fox-Wright function rΨs(z).

North American ginseng influences adipocyte-macrophage crosstalk regulation of inflammatory gene expression

  • Garbett, Jaime;Wilson, Sarah A.F.;Ralston, Jessica C.;Boer, Anna A. De;Lui, Ed M.K.;Wright, David C.;Mutch, David M.
    • Journal of Ginseng Research
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    • 제40권2호
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    • pp.141-150
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    • 2016
  • Background: Adipocyte-macrophage communication plays a critical role regulating white adipose tissue (WAT) inflammatory gene expression. Because WAT inflammation contributes to the development of metabolic diseases, there is significant interest in understanding how exogenous compounds regulate the adipocyte-macrophage crosstalk. An aqueous (AQ) extract of North American (NA) ginseng (Panax quinquefolius) was previously shown to have strong inflammo-regulatory properties in adipocytes. This study examined whether different ginseng extracts influence adipocyte-macrophage crosstalk, as well as WAT inflammatory gene expression. Methods: The effects of AQ and ethanol (EtOH) ginseng extracts ($5{\mu}g/mL$) on adipocyte and macrophage inflammatory gene expression were studied in 3T3-L1 and RAW264.7 cells, respectively, using real-time reverse transcription polymerase chain reaction. Adipose tissue organ culture was also used to examine the effects of ginseng extracts on epididymal WAT (EWAT) and inguinal subcutaneous WAT (SWAT) inflammatory gene expression. Results: The AQ extract caused significant increases in the expression of common inflammatory genes (e.g., Mcp1, Ccl5, Tnf-${\alpha}$, Nos2) in both cell types. Culturing adipocytes in media from macrophages treated with the AQ extract, and vice versa, also induced inflammatory gene expression. Adipocyte Ppar-${\gamma}$ expression was reduced with the AQ extract. The AQ extract strongly induced inflammatory gene expression in EWAT, but not in SWAT. The EtOH extract had no effect on inflammatory gene expression in either both cell types or WAT. Conclusion: These findings provide important new insights into the inflammo-regulatory role of NA ginseng in WAT.

MINERVA: SMALL PLANETS FROM SMALL TELESCOPES

  • WITTENMYER, ROBERT A.;JOHNSON, JOHN ASHER;WRIGHT, JASON;MCCRADY, NATE;SWIFT, JONATHAN;BOTTOM, MICHAEL;PLAVCHAN, PETER;RIDDLE, REED;MUIRHEAD, PHILIP S.;HERZIG, ERICH;MYLES, JUSTIN;BLAKE, CULLEN H.;EASTMAN, JASON;BEATTY, THOMAS G.;LIN, BRIAN;ZHAO, MING;GARDNER, PAUL;FALCO, EMILIO;CRISWELL, STEPHEN;NAVA, CHANTANELLE;ROBINSON, CONNOR;HEDRICK, RICHARD;IVARSEN, KEVIN;HJELSTROM, ANNIE;VERA, JON DE;SZENTGYORGYI, ANDREW
    • 천문학논총
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    • 제30권2호
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    • pp.665-669
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    • 2015
  • The Kepler mission has shown that small planets are extremely common. It is likely that nearly every star in the sky hosts at least one rocky planet. We just need to look hard enough-but this requires vast amounts of telescope time. MINERVA (MINiature Exoplanet Radial Velocity Array) is a dedicated exoplanet observatory with the primary goal of discovering rocky, Earth-like planets orbiting in the habitable zone of bright, nearby stars. The MINERVA team is a collaboration among UNSW Australia, Harvard-Smithsonian Center for Astrophysics, Penn State University, University of Montana, and the California Institute of Technology. The four-telescope MINERVA array will be sited at the F.L. Whipple Observatory on Mt Hopkins in Arizona, USA. Full science operations will begin in mid-2015 with all four telescopes and a stabilised spectrograph capable of high-precision Doppler velocity measurements. We will observe ~100 of the nearest, brightest, Sun-like stars every night for at least five years. Detailed simulations of the target list and survey strategy lead us to expect $15{\pm}4$ new low-mass planets.