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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Acta neurochirurgica 142 (2000), S. 1317-1318 
    ISSN: 0942-0940
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 0942-0940
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 91 (2002), S. 4637-4645 
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: A method for evaluating localized grain boundary (GB) trap states in polycrystalline–silicon thin-film transistors (poly-Si TFTs) is proposed. Field effects in poly-Si TFTs are analyzed by decomposition of the two-dimensional Poisson's equation. This analysis gives the theoretical basis for evaluating the localized GB trap state density. The trap states are evaluated with the GB barrier potential given by the activation energy of the effective mobility and with the surface potential calculated from the capacitance–voltage characteristics in poly-Si TFTs. This evaluating method was applied to several different types of poly-Si TFTs fabricated with excimer laser annealing crystallization processes. This method has succeeded experimentally in eliminating the error effects related to oxide–semiconductor interface trap states and in clarifying that the GB barrier potential has a peak in its gate bias dependence. This method has also elucidated that the GB trap state density has almost the same value independent of the grain size when the hydrogenation efficiency in poly-Si is in the same level between TFTs. The good agreement of the simulated and the measured drain currents confirm the validity of this method. © 2002 American Institute of Physics.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 78 (2001), S. 3259-3261 
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Photon-induced current (Iph) in polycrystalline-silicon thin-film transistors (poly-Si TFTs) has been investigated using a line-shaped light beam scanning method. In the off-state region, photon-excited carriers in the channel region diffuse to the drain with the diffusion length independent of the poly-Si grain size. The diffusion length is also independent whether poly-Si is hydrogenated or not. This phenomenon is observed in both n-channel and p-channel TFTs. In the subthreshold region, Iph follows the general transport equation in poly-Si. In the inversion region, Iph is proportional only to the total amount of excited carriers in the channel. © 2001 American Institute of Physics.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Science Ltd
    Weed research 43 (2003), S. 0 
    ISSN: 1365-3180
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary The effects of simulated human trampling on leaf morphology and ethylene production as well as the effect of an ethylene releaser ethephon on leaf morphology were investigated for trampling-tolerant species, Plantago asiatica and Eleusine indica, and trampling-susceptible species, Gnaphalium affine and Panicum bisulcatum. In Pl. asiatica, trampling decreased the leaf length and increased the leaf blade length to width ratio and the leaf blade length to leaf (leaf blade + petiole) length ratio. In E. indica, trampling only decreased the leaf blade length to width ratio. Trampling increased ethylene production in intact seedlings of Pl. asiatica, E. indica and G. affine. The ethephon (1 mM) treatment increased the leaf blade length to width ratio in seedlings of Pl. asiatica, but decreased that in seedlings of E. indica in a manner similar to the morphological changes induced by trampling. In contrast, no significant differences in leaf morphology were observed between the ethephon-treated and control seedlings of trampling-susceptible species. These results suggest that trampling-tolerant species have higher responsiveness to ethylene than trampling-susceptible species and change their leaf morphology in response to ethylene induced by trampling.
    Type of Medium: Electronic Resource
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  • 6
    ISSN: 1438-1435
    Keywords: Key words Aneurysm – Superior mesenteric artery – Computed tomography – Helical – Intestines – Hernia
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract We present a case of intestinal obstruction caused by a transomental hernia with an associated finding of a dissecting aneurysm of the superior mesenteric artery. These two rare conditions both cause acute abdomen with similar symptoms. This case shows the possible diagnostic pitfalls of transomental hernia.
    Type of Medium: Electronic Resource
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  • 7
    ISSN: 1432-0843
    Keywords: Key words Antigenic peptides ; Epithelial cancer ; Immunotherapy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Recent human tumor immunology research has identified several genes coding immunogenic peptides recognized by CD8 cytotoxic T lymphocytes (CTLs) in melanoma tumors. Very recently, CD4 T cell antigenic epitopes were also determined in certain melanoma tumors. The use of these peptides in conjunction with human immunotherapy could prove to be of great benefit. However, such peptides in clinically common tumors of epithelial cell origin, such as of the stomach, colon, lung, etc., have not yet been determined extensively. We describe for the first time an HLA-A31 (A*31012)-restricted natural antigenic peptide recognized by the CD8 CTL TcHST-2 of gastric signet ring cell carcinoma cell line HST-2. We also identified the HLA-DRB1*08032-restricted peptide recognized by the CD4 T cell line TcOSC-20 of squamous cell carcinoma OSC-20 derived from the oral cavity. The antigenic peptide of HST-2, designated F4.2, is composed of 10 amino acid residues with two anchor motif residues necessary for binding to HLA-A31 molecules. The synthetic F4.2 peptide enhanced the reactivity of TcHST-2 against HST-2 cells. Furthermore, introduction of an expression minigene coding F4.2 peptide to HLA-A31(+) cells conferred cytotoxic susceptibility to TcHST-2 on the cells. Some stomach cancer lines into which the HLA-A31 gene had been introduced, such as MKN28-A31-2, were lysed by TcHST-2, suggesting the presence of F4.2 peptide in at least some HLA-A31(+) stomach cancers. Furthermore, F4.2 peptide induced an F4.2 peptide-specific CTL response in at least 30–40% of HLA-A31(+) peripheral blood lymphocytes from gastric cancer patients, suggesting that F4.2 peptide could be used as a cancer vaccine for gastric tumors. The natural antigenic peptide of OSC-20 was also determined using acid extraction and biochemical separation and by mass spectrometry. Consequently, OSC-20 peptide was designated as the 6-1-5 peptide, an HLA-DRB1*08032-restricted 16-mer peptide with two possible anchor motifs. It has an amino acid sequence identical to that of human α-enolase, suggesting that it was derived from the processed parental α-enolase protein. We are presently attempting to determine the genes that code tumor rejection antigens recognized by HLA-A24- and A26-restricted T cells, including those of pulmonary and pancreatic carcinomas. The search for these antigenic peptides may lead to the identification of immunogenic peptide antigens that would be suitable for clinical use in commonly occurring epithelial cancers.
    Type of Medium: Electronic Resource
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  • 8
    ISSN: 1434-6052
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract. We have studied inclusive muon events using all the data collected by the TOPAZ detector at $\sqrt{s}=58$ GeV with an integrated luminosity of 273pb $^{-1}$ . From 1328 inclusive muon events, we measured the ratio $R_{q\bar{q}}$ of the cross section for $q\bar{q}$ production to the total hadronic cross section and forward-backward asymmetry $A_{FB}^{q}$ for b and c quarks. The obtained results are $R_{b\bar{b}}=0.13\pm0.02(stat)\pm0.01(syst)$ , $R_{c\bar c}=0.36\pm0.05(stat)\pm0.05(syst)$ , $A_{FB}^{b}=-0.20\pm0.16(stat)\pm0.01(syst)$ and $A_{FB}^ c=-0.17\pm0.14(stat)\pm0.02(syst)$ , in fair agreement with a prediction of the standard model.
    Type of Medium: Electronic Resource
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