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  • 1
    Electronic Resource
    Electronic Resource
    A thin-film transistor with a very thin a-Si:H layer and its application for an LC panel (1986)
    Springer
    Applied physics 41 (1986), S. 311-314 
    Details
    ISSN: 1432-0630
    Keywords: 73.40.Qv ; 73.60.Fw ; 86.60.Pg
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract One of the disadvantages of applying an a-Si:H thin-film transistor (TFT) to an active matrix-addressed liquid crystal (LC) panel is that a TFT with an a-Si:H has a very large photo-leakage current because of the high photo-conductivity of an a-Si:H itself. We have tried decreasing the photo-leakage current by varying the thickness of an a-Si:H layer (L) in TFTs and investigated the characteristics of TFTs, mainly drain voltage versus drain current containing photo-leakage current (I ph). As a result, it is shown that lnI ph is proportional to InL, and its gradient is 1.5–2.0. We assume that the thinner an a-Si:H layer is, the more effective the recombination of carriers at the interface states is forI ph. We have applied TFT with a very thin a-Si:H layer (∼30nm) to a full-color active matrix-addressed LC panel for a moving picture display and realized a display of good quality under illuminated condition of 5×104lx without a shading layer in it.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00616054
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  • 2
    Electronic Resource
    Electronic Resource
    Structure and function of a pyrimidine/purine-biased sequence from the 5′-flanking region of the basidiomycete Lentinus edodes gene priA (2000)
    Springer
    Molecular genetics and genomics 263 (2000), S. 262-270 
    Details
    ISSN: 1617-4623
    Keywords: Key words Basidiomycete ; CT motif ; Regulation of gene expression ; Promoter activity ; S1-sensitive sites
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The priA gene of the basidiomycete Lentinus edodes possesses a pyrimidine (CT)-rich stretch (26 bp) that includes a short (6-bp) repeat, the elements of which form a mirror repeat at and near the transcriptional initiation sites. A DNA fragment that included this sequence was inserted into pBR322, and the resulting plasmids were introduced into Escherichia coli. Analysis of the susceptibility of these pBR322 derivatives to cleavage by S1 nuclease, following isolation from E. coli, indicated the formation of an open, S1-sensitive structure within and just downstream of the CT/AG-biased sequence. Replacement of two dTMP residues in one of the repeat elements by dGMP resulted in the elimination of the S1-cleavable open structure from the plasmids. To analyze the effect of the CT/AG-biased sequence from priA in the basidiomycete Coprinus cinereus, the integrating vectors pLC2 and pLC2mutCT were used; these contained the wild-type priA promoter and the mutant priA promoter with the aforementioned mutation in the mirror repeat, respectively. The Streptomyces-derived bialaphos resistance gene (bar) was fused downstream of the promoters, and the resulting plasmids, pLC2-bar and pLC2mutCT-bar, were introduced into C. cinereus. Transformants carrying pLC2mutCT-bar grew significantly more slowly on bialaphos-containing agar plates and contained a noticeably lower level of the bar transcript when compared with the transformants obtained with pLC2-bar. These results suggest that an unusual structure induced by the CT/AG-biased sequence is required for efficient gene expression from the priA promoter.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s004380051167
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    Paper (German National Licenses)
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