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  • 1
    Electronic Resource
    Electronic Resource
    Optical study of ZnSexTe1−x alloys using spectroscopic ellipsometry (2000)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 77 (2000), S. 2997-2999 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: We report pseudodielectric function data 〈ε〉=〈ε1〉+i〈ε2〉 of ZnSexTe1−x samples grown on GaAs substrates. The data were obtained from 1.5 to 6.5 eV using spectroscopic ellipsometry. Critical-point parameters were obtained by fitting model line shapes to numerically calculated second-energy derivatives of 〈ε〉. The bowing parameters of E0, E1, and E1+Δ1 were determined and were comparable to that of E0 quoted from the literature. We observed a monotonic increase of the linewidth of the E1 gap up to x=0.85, whereas that of E1+Δ1 showed a maximum value near x=0.5. We attribute this anomalous broadening of the E1 gap to sample microstructures developed in the low-Te composition alloys. © 2000 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1323999
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  • 2
    Electronic Resource
    Electronic Resource
    Power-law dependence of persistent photoconductivity on exposure time in compensated a-Si : H
    Amsterdam : Elsevier
    Solid State Communications 86 (1993), S. 589-592 
    Details
    ISSN: 0038-1098
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1016/0038-1098(93)90145-D
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  • 3
    Electronic Resource
    Electronic Resource
    Persistent photoconductivity in hydrogenated amorphous silicon
    Amsterdam : Elsevier
    Solid State Communications 59 (1986), S. 177-181 
    Details
    ISSN: 0038-1098
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Physics
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0038-1098(86)90204-8
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  • 4
    Electronic Resource
    Electronic Resource
    Ball material dependence of spinning rotor gage residual drag
    Amsterdam : Elsevier
    Vacuum 42 (1991), S. 897-900 
    Details
    ISSN: 0042-207X
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0042-207X(91)90554-V
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  • 5
    Electronic Resource
    Electronic Resource
    Fracture of a ductile layer constrained by stiff substrates (2001)
    Oxford, UK : Blackwell Science Ltd
    Fatigue & fracture of engineering materials & structures 24 (2001), S. 0 
    Details
    ISSN: 1460-2695
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: A combined experimental and theoretical analysis of the fracture behaviour of brass/solder/brass sandwich specimens is conducted. First, the theories of interfacial fracture initiation for a ductile layer sandwiched between elastic substrates are reviewed. The fracture behaviours are then reported of brass/solder/brass sandwich specimens under various mode mixities. Additionally, the effects of solder layer thickness h and specimen lateral thickness t are presented. The effects of mode mix and plastic constraint on the failure mechanism and toughness are analysed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1046/j.1460-2695.2001.00371.x
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  • 6
    Electronic Resource
    Electronic Resource
    Effect of cinnarizine on IgE antibody-mediated experimental allergic reactions in guinea pigs (1987)
    Oxford, UK : Blackwell Publishing Ltd
    Allergy 42 (1987), S. 0 
    Details
    ISSN: 1398-9995
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: The anti-allergic activity and mechanism of cinnarizine was investigated in guinea pigs. Nifedipine, a calcium antagonist, and tranilast, a potent, orally active anti-allergic agent, were used as comparative drugs. 1) Cinnarizine protected against fatal systemic anaphylactic shock in guinea pigs passively sensitized with IgE antibody. Cinnarizine reduced many of the features of severe respiratory disorders. Nifedipine and tranilast showed similar effects. 2) Cinnarizine and nifedipine inhibited the contractile response to antigen of sensitized tracheal smooth muscle when the challenge was carried out at low antigen concentrations. Tranilast showed a tendency to inhibit the antigen-induced contraction of tracheal smooth muscle. 3) Cinnarizine and nifedipine inhibited Ca-induced contraction in potassium-depolarized tracheal smooth muscle, tranilast had no effect. 4) Cinnarizine showed antagonistic action to the contraction by histamine or leukotriene D4 (LTD4) of tracheal muscle. Nifedipine showed similar antagonistic action, although its potency is lower than cinnarizine. Tranilast showed slight antagonistic action to LTD4. 5) Antigen-induced release of histamine and slow reacting substance of anaphylaxis (SRS-A) from sensitized lung tissues was inhibited by nifedipine and tranilast but not by cinnarizine. 6) The release of histamine and SRS-A from lung tissues by calcium ionophore A23187 was inhibited by nifedipine and tranilast but not by cinnarizine. These results suggest that the anti-allergic action of cinnarizine is mainly due to the antagonistic action to allergic mediators and not by interfering with die release of mediators. Cinnarizine's mechanism seems to be related to its antagonistic action to Ca in smooth muscle, but not to the transport of Ca in releasing the anaphylactic chemical mediators in mast cells and other target cells.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1398-9995.1987.tb02371.x
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  • 7
    Electronic Resource
    Electronic Resource
    Two-stage Nested PCR Effectiveness for Direct Detection of Vibrio vulnificus in Natural Samples (1999)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 64 (1999), S. 0 
    Details
    ISSN: 1750-3841
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Notes: The nested primers designed to amplify a 222-base pair portion of the hemolysin gene, vvhA, were specific for all V. vulnificus strains tested. The nested PCR amplification, coupled with direct extraction of template DNA, revealed improved sensitivity sufficient for detection of 1 to 10 CFU V. vulnificus in 1 mL of seafood homogenates, and eliminated the need for enrichment culturing. Thereby, the nested PCR method achieved a broader applicability, making it effective for extensive use in identification of the pathogen in natural samples such as raw seafoods, seawater and sediments.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2621.1999.tb09882.x
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  • 8
    Electronic Resource
    Electronic Resource
    Alteration of signal-transducing molecules in tumor-infiltrating lymphocytes and peripheral blood T lymphocytes from human colorectal carcinoma patients (1998)
    Springer
    Cancer immunology immunotherapy 45 (1998), S. 299-305 
    Details
    ISSN: 1432-0851
    Keywords: Key words TCR-CD3 ; TIL ; Colorectal cancer ; Protein tyrosine kinase (PTK) ; Immune suppression
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract  Tumor development or growth is accompanied by impaired immune responses, such as a poor proliferative response or down-regulated cytolytic T lymphocyte activity. Although recent reports have suggested that modification of the signal-transducing molecule is responsible for impaired immune responses in tumor-bearing hosts, the causes of defective immune function are not yet completely understood. Furthermore, the clinical significance of the findings is not yet clear. In this study, we investigated the alteration of several signal-transducing molecules in peripheral blood T lymphocytes (T-PBL) as well as in tumor-infiltrating lymphocytes (TIL) from human colorectal carcinoma patients and their relationship with the impaired host immune responses. A greater reduction in CD3ζ chain level was observed in TIL than in T-PBL from tumor-bearing hosts. CD3ζ chain reduction in T-PBL correlated with the clinicopathological stage of a tumor, especially with the status of lymph node metastasis. The levels of p56 lck and p59 fyn protein tyrosine kinase in T-PBL were also compared between tumor-bearing hosts and normal healthy volunteers. In T-PBL from tumor-bearing hosts, expression of protein tyrosine kinase p59 fyn was significantly lower than that of p56 lck . However, the level of CD3ζ chain expression did not correlate with T lymphocyte functions such as T lymphocyte proliferative response or allogeneic target cell lysis.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002620050446
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  • 9
    Electronic Resource
    Electronic Resource
    Single-frame (two-field image) 3-D PTV for high speed flows (2000)
    Springer
    Experiments in fluids 29 (2000), S. S085 
    Details
    ISSN: 1432-1114
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract A single-frame 3-D PTV algorithm was constructed to measure 3-D high-speed flows with NTSC cameras. The measurement system consists of three NTSC cameras, an optical instrument called AOM, a digital image grabber and a hosting computer. The tracking algorithm of particles' pair is based on a concept of a spatial match probability. The measurement system is used to probe the turbulent properties of the backward-facing step flow. A preliminary test of the measurement system is also made on the measurement of 3-D vectors of 36 targets on a rotating table to verify its validity. The measurement uncertainty of the system is systematically evaluated through the preliminary test. A set of virtual images is constructed by using the vectors selected randomly from the grid vectors that had been obtained by the experiment on the backward-facing step flow with the system. A performance test is made on the vector recovery using the virtual images and it is validated.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s003480070011
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  • 10
    Electronic Resource
    Electronic Resource
    Characteristics of TiSi2 contact to BF2-doped single-silicon (1993)
    Springer
    Journal of materials science 28 (1993), S. 4878-4882 
    Details
    ISSN: 1573-4803
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract The reaction mechanism of titanium silicide was investigated for varying amounts, of BF2 dopant on a Si-substrate. Titanium thin films were prepared by direct current sputtering on non-doped and BF2-implanted silicon wafers. The heat treatment temperatures, by rapid thermal annealing (RTA), were varied in the range 600–800 °C for 20 s. C49 TiSi2 forms at 700 °C and almost all of its phase is transformed into C54 TiSi2 with a very low resistivity value (16 μΩ cm) at 800 °C. When the amount of impurities is increased, the sheet resistance of Ti-silicides also increased while its thickness decreased. The main cause of the thickness reduction of Ti-silicide is the growth of enhanced native oxide. Dopants are chiefly redistributed in the interface between the Ti-silicide and the Si-substrate. It is believed that the formation of titanium boride increases the contact resistance during the Ti-silicide formation for samples annealed at 750 °C and 800 °C.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00361150
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