• 제목/요약/키워드: Transcription alignment

검색결과 40건 처리시간 0.031초

전사배향 TN-LCD의 액정배향 및 전기광학특성 (Liquid crystal alignment and EO performance of transcription-aligned TN-LCD)

  • 서대식;김진호
    • 한국전기전자재료학회논문지
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    • 제11권12호
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    • pp.1133-1138
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    • 1998
  • In this paper, we obtained the monodomain alignment of nematic liquid Crystal(NLC) in the cell fabricated by transcription alignment method on polyimide(PI) surface with side chain. It is considered that the LC alignment produced by the transcription alignment method is attributed to a memory effect of the NLC on PI surfaces. Also we observed that the generated pretilt angle of NLC is about $3.7^{\circ}$ with transcription alignment on PI surface. Next, we measured that the voltage-transmittance characteristics of transcription-aligned TN-LCD are almost same compared to rubbing-aligned TN-LCD. Also, we measured that the curve of transcription-aligned TN-LCD is less sharp than that of the rubbing-aligend TN-LCD in the decay time characteristics. It is considered that the response time characteristics of transcription-aligned TN-LCD are attributed to the weak anchoring strength between the LC molecules and the polymer surface.

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양면 전사배향법을 이용한 TN-LCD의 액정배향과 전기광학특성 (Liquid crystal alignment and EO performance of TN-LCD fabricated by transcription alignment method on polymer surface)

  • 서대식;김진호;이창훈
    • 대한전기학회:학술대회논문집
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    • 대한전기학회 1998년도 하계학술대회 논문집 D
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    • pp.1388-1390
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    • 1998
  • In this paper, we investigated the monodomain alignment of nematic liquid crystal(NLC) in the cell fabricated by transcription alignment method on polyimide(PI) surface with side chain. The LC alignment produced by the transcription alignment method is attributed to a memory effect of the NLC on PI surfaces. We observed that the pretilt angle of NLC is generated about $3.7^{\circ}$ with transcription alignment on PI surface. Also, we obtained the good electro-optical(EO) performance of twisted nematic(TN)-liquid crystal display(LCD) by transcription alignment method on PI surface.

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전사배향법을 이용한 씰의 액정배향의 효과 (Effect of Liquid Crystal alignment in the cell using transcription alignment method)

  • 서대식;김진호;최재학
    • 한국전기전자재료학회:학술대회논문집
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    • 한국전기전자재료학회 1998년도 춘계학술대회 논문집
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    • pp.271-274
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    • 1998
  • In this paper, the monodomain alignment of nematic liquid crystal(NLC) in the cell fabricated by one side transcription alignment method on PI surface with side chain were investigated. The LC alignment produced by the transcription alignment method is attributable to a memory effect of the NLC on Pl surfaces. We observed that the pretilt angle of NLC is generated about 3.6$^{\circ}$ in a cell with one side transcription alignment on PI surface. Also, the electro-optical(EO) performance of TN-LCD with one side transcription alignment method on PI surface will be discussed.

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전사배향 TN-LCD 에서의 배향막의 극성효과에 관한 연구 (Study on of polarity effect on alignment film in transcription-aligned TN-LCD)

  • 김진호;서대식
    • 대한전기학회:학술대회논문집
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    • 대한전기학회 1999년도 하계학술대회 논문집 D
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    • pp.1812-1814
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    • 1999
  • The effects of polarity of the polymer on transcription-aligned twisted nematic (TN)-liquid crystal display (LCD) on various the polyimide (PI) surfaces were investigated. The monodomain alignment of nematic (N)LC is obtained in cells fabricated by transcription alignment method on PI surface with medium polarity. The LC alignment using transcription alignment method is attributed to polarity of the polymer. The threshold voltage of transcription-aligned TN-LCD decreases with increasing the polarity of the polymer on three kinds of the PI surfaces. The threshold voltage of transcription-aligned TN-LCD on PI surface with high polarity is almost the same compared to rubbing-aligned TN-LCD. The response time of transcription-aligned TN-LCD decreases with the increasing the polarity of the polymer on all PI surfaces. The decay time of transcription-aligned TN-LCD is slow compared with the rubbing-aligned TN-LCD.

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폴리이미드막에 있어서 네마틱 액정의 메모리 효과를 이용한 전사 배향법에 관한 연구 (Investigation of transcription alignment method by using memory effect of nematic liquid crystal on polyimide surface)

  • 서대식;이정호;김진호;이보호
    • E2M - 전기 전자와 첨단 소재
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    • 제10권9호
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    • pp.876-880
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    • 1997
  • In this paper we investigated the transcription of liquid crystal (LC) alignment method by using memory effect of nematic(N) LCon polymide(PI) surface with side chain as for non-rubbing alignment techniques. That the monodomain alignment of aligned NLC is observed by microscope textures in the cells on PI surface with side chain. We obtained that the pretilt angle of NLC are generated about 3.7$^{\circ}$on PI surface. We suggest that the LC alignment by using transcription alingnment method is attributed to memory effect of NLC on PI surface.

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전사배향기술을 이용한 네마틱액정의 고프리틸트각 발생에 관한 연구 (Investigation of High Pretilt Angle Generation in Nematic Liquid Crtstal by Using Transcription alignment Techniques)

  • 서대식;한정민;김진호;이보호
    • 대한전기학회:학술대회논문집
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    • 대한전기학회 1997년도 하계학술대회 논문집 C
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    • pp.1582-1584
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    • 1997
  • We investigated the transcription of liquid crystal (LC) alignment method by using memory effect of nematic (N) LC on polyimide (PI) surface with side chain as for non-rubbing alignment techniques. That the monodomain alignment of aligned NLC is observed by polarizing microscope textures in the cells on PI surface with side chain, We obtained that the pretilt angle of NLC are generated about 3.7 degree on PI surface. We suggest that the LC alignment by using transcription aligngnment method is attributed to memory effect of NLC on PI surface.

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전사배향법을 이용한 네마틱액정의 프리틸트각 발생에 관한 연구 (Investigation of Pretilt Angle Generation in thematic Liquid Crystal by Using Transcription alignment)

  • 서대식;김진호;한정민;이정호
    • 한국전기전자재료학회:학술대회논문집
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    • 한국전기전자재료학회 1997년도 춘계학술대회 논문집
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    • pp.123-126
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    • 1997
  • In this study, we investigated the Pretilt ang1e generation in nematic liquid crystal (NLC) by using the transcription, alignment on polyimide(Pl) surfaces. That the uniform alignment of NLC is observed by microphotograph textures in LC cells on Pl surface. We obtained that the pretilt angle of NLC are generated about 3.6$^{\circ}$on Pl surface. It is considered that the LC alignment by transcription alignment method is attributed to memory effect of LC on Pl surface.

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자동 구두점 삽입을 이용한 Rich Transcription 생성 (Rich Transcription Generation Using Automatic Insertion of Punctuation Marks)

  • 김지환
    • 대한음성학회지:말소리
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    • 제61호
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    • pp.87-100
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    • 2007
  • A punctuation generation system which combines prosodic information with acoustic and language model information is presented. Experiments have been conducted first for the reference text transcriptions. In these experiments, prosodic information was shown to be more useful than language model information. When these information sources are combined, an F-measure of up to 0.7830 was obtained for adding punctuation to a reference transcription. This method of punctuation generation can also be applied to the 1-best output of a speech recogniser. The 1-best output is first time aligned. Based on the time alignment information, prosodic features are generated. As in the approach applied in the punctuation generation for reference transcriptions, the best sequence of punctuation marks for this 1-best output is found using the prosodic feature model and an language model trained on texts which contain punctuation marks.

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Modification of cell wall structural carbohydrate in the hybrid poplar expressing Medicago R2R3-MYB transcription factor MtMYB70

  • Kim, Sun Hee;Choi, Young Im;Jin, Hyunjung;Shin, Soo-Jeong;Park, Jong-Sug;Kwon, Mi
    • Journal of Plant Biotechnology
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    • 제42권2호
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    • pp.93-103
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    • 2015
  • The isolation, cloning, and characterization of an R2R3-MYB transcription factor gene (MtMYB70) from the model legume Medicago truncatula is reported. MtMYB70 consists of a 768-bp coding sequence corresponding to 255 amino acids. Sequence alignment revealed that MtMYB70 cDNA contains conserved R2R3-type MYB domains with highly divergent C terminal regions. MtMYB70 was found to have relatively low sequence homology with known R2R3-MYB genes. Phylogenetic analysis placed the R2R3-MYB domain of MtMYB70 closest to PtMYB1, a known activator of lignin biosynthesis. Overexpression of MtMYB70 under the control of the 35S promoter in transgenic poplar did not cause a significant difference in total lignin content relative to the control, but glucan content was significantly increased in transgenic poplar. Therefore, MtMYB70 might have regulatory role in the biosynthesis of cell wall structural carbohydrates.

Molecular Cloning, Phylogenetic Analysis, Expressional Profiling and In Vitro Studies of TINY2 from Arabidopsis thaliana

  • Wei, Gang;Pan, Yi;Lei, Juan;Zhu, Yu-Xian
    • BMB Reports
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    • 제38권4호
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    • pp.440-446
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    • 2005
  • A cDNA that was rapidly induced upon abscisic acid, cold, drought, mechanical wounding and to a lesser extent, by high salinity treatment, was isolated from Arabidopsis seedlings. It was classified as DREB subfamily member based on multiple sequence alignment and phylogenetic characterization. Since it encoded a protein with a typical ERF/AP2 DNA-binding domain and was closely related to the TINY gene, we named it TINY2. Gel retardation assay revealed that TINY2 was able to form a specific complex with the previously characterized DRE element while showed only residual affinity to the GCC box. When fused to the GAL4 DNA-binding domain, either full-length or its C-terminus functioned effectively as a trans-activator in the yeast one-hybrid assay while its N-terminus was completely inactive. Our data indicate that TINY2 could be a new member of the AP2/EREBP transcription factor family involved in activation of down-stream genes in response to environmental stress.