• Title/Summary/Keyword: R/C structure

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Core Technology for Prominent COT (Color Filter On TFT Array) Structure

  • Kim, D.G.;Park, S.R.;Kim, S.J.;Park, J.J.;Seo, C.R.;Chung, I.J.
    • 한국정보디스플레이학회:학술대회논문집
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    • 2004.08a
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    • pp.393-394
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    • 2004
  • To get rid of cell assembly margin and have more process room of upper substrate, we developed truly COT (Color Filter On TFF Array) LCDs in that B/M (Black Matrix) as well as C/F (Color Filter) layer is located on TFT substrate. Novel B/M material is also developed for this COT structure. Difficulty in making contact hole through C/F layer was solved by making each C/F pattern isolated from others. We think this configuration will be core technology for prominent COT LCDs.

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The Study on the Unidrectionally Solidified $AI-CuAl_2$ Eutectic Composites(1) (Effect of Solidification Condition and Vibration on the Microstructure) (일방향 응고한 $AI-CuAl_2$공정복합재료에 관한 연구(1)(미세조직에 미치는 응고조건과 진동의 영향))

  • Lee, Hyeon-Gyu;Hong, Jong-Hwi
    • Korean Journal of Materials Research
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    • v.4 no.2
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    • pp.177-186
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    • 1994
  • The effect of solidification condition and vibration on structure refinement was investigatedfor unidirectionally solidified $AI-CuAI_{2}$ eutectic composites. Eutectic composites were unidirectionally solidifiedunder vibration with variation of growth rates (R) and thermal gradient((G), $32^{\circ}C$/cm, and 35$^{\circ}C$/cm. The lamellar structure was varied according to growth condition(G/R ratio). For the structure refinementthe effect of G/R was found out to be greater rather than that of vibration. The interlamellarspacing(l) in this materials was varied with the growth rates(R) by "$\lambda^{2}R$=Constant" relationshipquot; relationship

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IMBEDDINGS OF MANIFOLDS DEFINED ON AN 0-MINIMAL STRUCTURE ON (R,+,.,<)

  • Kawakami, Tomohiro
    • Bulletin of the Korean Mathematical Society
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    • v.36 no.1
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    • pp.183-201
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    • 1999
  • Let M be an 0-minimal structure on the standard structure :=( , +, ,<) of the field of real numbers. We study Cr -G manifolds (0$\leq$r$\leq$w) which are generalizations of Nash manifolds and Nash G manifolds. We prove that if M is polynomially bounded, then every Cr -G (0$\leq$r<$\infty$) manifold is Cr -G imbeddable into some n, and that if M is exponential and G is a compact affine Cw -G group, then each compact $C\infty$ -G imbeddable into some representation of G.

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The Phylotype of Thermus from the Rehai Geothermal Area, Tengchong, China

  • Guo, Chunlei;Wang, Tao;Zhu, Wei;Zhang, Donghua;Cui, Xiaolong;Xu, Lihua;Peng, Qian
    • Journal of Microbiology
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    • v.41 no.2
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    • pp.152-156
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    • 2003
  • Through enrichment on two nutrient agars, 57 Thermus isolates were recovered from 15 hot spring samples taken from the Rehai geothermal area, Tengchong, China. Unique growth characteristics were observed when the strains were transferred from YIM14 medium to Thermus medium. Phylogenetic analysis showed that the 16S rDNA sequences of the isolates and clones from the Rehai geothermal area farmed a monophyletic group on the phylogenetic tree. A secondary structure comparison showed that their 16S rRNAs have unique secondary structure characteristics.

CHARACTERIZATIONS OF REAL HYPERSURFACES OF TYPE A IN A COMPLEX SPACE FORM USED BY THE ζ-PARALLEL STRUCTURE JACOBI OPERATOR

  • Kim, Nam-Gil;Ki, U-Hang;Kurihara, Hiroyuki
    • Honam Mathematical Journal
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    • v.30 no.3
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    • pp.535-550
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    • 2008
  • Let M be a real hypersurface of a complex space form with almost contact metric structure $({\phi},{\xi},{\eta},g)$. In this paper, we study real hypersurfaces in a complex space form whose structure Jacobi operator $R_{\xi}=R({\cdot},{\xi}){\xi}$ is ${\xi}$-parallel. In particular, we prove that the condition ${\nabla}_{\xi}R_{\xi}=0$ characterize the homogeneous real hypersurfaces of type A in a complex: projective space $P_n{\mathbb{C}}$ or a complex hyperbolic space $H_n{\mathbb{C}}$ when $g({\nabla}_{\xi}{\xi},{\nabla}_{\xi}{\xi})$ is constant and not equal to -c/24 on M, where c is a constant holomorphic sectional curvature of a complex space form.

A Study on the Design Automation of R/C Beam Using Analogy Evolutionary Procedure (유사 점진적 최적화 기법에 의한 철근콘크리트 구조물의 설계자동화에 관한 연구)

  • 엄대호;이정재;윤성수;김한중
    • Proceedings of the Korean Society of Agricultural Engineers Conference
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    • 1999.10c
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    • pp.219-224
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    • 1999
  • In this study New design automation method of R/C structure based on the finite element method and the analogy evolution ary procedure was developed . This system is the efficient tool to support Reinforcement Arrangement of R/C structure. The anology evolutionary procecure is similar to the evolutionary procedure proposed by Xie and Steven.

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Synthesis and Structure Dinitroethylenediamine Palladium(II) (Dinitroethylenediamine Palladium(II)의 합성 및 결정구조 연구)

  • Namgung Hae
    • Korean Journal of Crystallography
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    • v.15 no.2
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    • pp.74-77
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    • 2004
  • The crystal structure of Dinitroethylenediaminepalladium(II), $Pd(C_2H_8N_2)(NO_2)_2$, has been determined by X-ray crystallography. Crystal data: a=7.425(3), b=8.480(4), c=11.885(2) ${\AA}$, Orthorhombic, $A2_1ma$ (Space Group No=36), Z=4, V=748.3(4) ${\AA}^3,\;D_c=2.295 gcm^{-3},\;{\mu}=2.457mm^{-1}$. The structure was solved by Patterson method and refined by full matrix least-square methods using unit weights. The final R and S values were $R_1=0.0306,\;R_w=0.0802,\;R_{all}=0.0320,\;and\;S=1.166)$ for the observed 377 reflections. Bond lengths and angles of palladium complex are similar to the previously reported data. The complex structure is one dimensional Reiset's salt type analogue showing zigzag chain of Pd-Pd length and angle of 3.762(2) ${\AA}$ and $161.41(5)^{\circ}$. The complex molecules are linked through inter-and intramolecular hydrogen bonds of 3.05(1) and 3.15(1) ${\AA}$ between oxygen and nitrogen.

Structure Analysis of Liquid Crystal Emulsions Using X-ray Scattering Analysis (X선 산란분석법을 이용한 액정에멀젼 구조분석)

  • Park, So Hyun;Kim, Su Ji;Noh, Min Joo;Lee, Jun Bae;Park, Soo Nam
    • Journal of the Society of Cosmetic Scientists of Korea
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    • v.42 no.3
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    • pp.297-302
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    • 2016
  • In this study, we prepared liquid crystal emulsions composed of $C_{12-20}$ alkyl glucoside, $C_{14-22}$ alcohol, and behenyl alcohol and performed structure analysis using various analytical equipment. First, as an important characteristic of liquid crystal emulsions, maltese cross patterns and multi-layer structure were observed by a polarized microscope and cryo-SEM. Also, formation of liquid crystal phase was confirmed by DSC and multi-layer lamellar structure having an interlayer spacing approximately $305{\AA}$ was confirmed by small angle x-ray scattering (SAXS). The alkyl chain arrangement formed orthorhombic structure of a lamellar structure of the liquid crystal emulsion was confirmed by wide angle x-ray scattering (WAXS). These results suggest that information on the various physical properties obtained through the research of liquid crystal emulsion structure is expected to be widely used in cosmetics development in the future.

The Capacity Design Method towards Improving Seismic Perfor mance of Gravity-Load Designed R/C Frames (내진역량설계법(Capacity Design Method)을 이용한 비내진설계 R/C 골조의 내진 성능 향상기법)

  • 조봉호
    • Proceedings of the Earthquake Engineering Society of Korea Conference
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    • 1997.10a
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    • pp.209-216
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    • 1997
  • The seismic performance of R/C frame structure designed for gravity load investigated in this paper. The investigation shows a satisfactory seismic performance against moderate earthquakes but column sway failure mechanism against severe earthquakes. Capacity design method is employed to redesign the R/C frame to improve seismic performance. This study provides an insight an insight into seismic upgrading methodology for medium rise R/C frame structures designed gravity load.

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Di- and Triorganotin(IV) Complexes of Sulfur-containing Ylidenemalonates

  • Jung, Ok-Sang;Lee, Young-A;Hong, Jong-Ki;Jeong, Jong-Hwa;Sohn, Youn-Soo
    • Bulletin of the Korean Chemical Society
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    • v.14 no.6
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    • pp.722-726
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    • 1993
  • Organotin(IV) complexes of ylidenemalonates $(R_xSn)_{x-1}(O_2C)_2C=C(SR')_2\;(R=n-C_4H_9,\;C_6H_5,\;cyclo-C_6H_{11},\;CH_3OOCCH_2CH_2;\;x=2,3;\;R'=CH_3,\;R_2'=-CHCH-,\;-CH_2CH_{2^-})$ have been synthesized and characterized by means of various spectroscopic methods. The X-ray crystal structure of $(Ph_3Sn)_2(O_2C)_2C=C(SCH_3)_2$ has been determined (Pi; a= 9.704(2) ${\AA}$, b= 14.412(1) ${\AA}$, c= 14.760(3) ${\AA}$, ${alpha}$=74.26(1)$^{\circ}$, ${beta}$=99.38(l)$^{\circ}$, ${\gamma}$=79.09(1)$^{\circ}$, $V= 1950.7(7){\AA}^3$) and refined to R= 0.045. The crystal structure discloses a discrete molecule with bidentate-like carboxylate ligand. For diorganotin analogues, the structures are discussed in terms of IR, $^1H-NMR,\;^{13}C-NMR$, and FAB mass spectrometry. The mass spectrum indicates that the diorganotin complexes of ylidenemalonates are dimeric.