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  • 1
    Electronic Resource
    Electronic Resource
    Superconductivity in Srn+1CunO2n+1+δ "infinite layer'' films induced by postgrowth annealing (1995)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 66 (1995), S. 2283-2285 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Superconductivity with Tc(approximately-equal-to)25–45 K has been induced in films based on the "infinite layer'' structure though high temperature annealing in an oxygen ambient. The films had compositions Srn+1CunO2n+1+δ (n=3–9) and were previously grown by laser molecular beam epitaxy by periodic insertion of SrO defect layers into the SrCuO2 infinite layer matrix. A marked dependence on the cooling rate at the end of the postgrowth anneals indicates that preservation of a high temperature oxygen sublattice forms the key to enhancing the carrier density in these films, opposite to the situation with YBa2Cu3O7−δ . © 1995 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.113193
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  • 2
    Electronic Resource
    Electronic Resource
    Formation of YBa2Cu3O7−y/BaTiO3 multistructures by pulsed laser deposition for high-temperature superconducting device applications (1995)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 67 (1995), S. 554-556 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The formation of YBa2Cu3O7−y(YBCO)/BaTiO3(BTO)//SrTiO3(STO) (100) and BTO/ YBCO//STO(100) bilayer structures is demonstrated for the construction of a superconductor ferroelectric field transistor. The resulting films of the bilayers have highly c-axis oriented structure. Epitaxial YBCO films formed on the BTO//STO(100) have a zero resistance temperature of 88.9 K. The surface morphology of the epitaxial BTO films on the YBCO//STO is very smooth with a mean surface roughness of 32 A(ring). Moreover, the Au/BTO/YBCO structures have been fabricated, and the dielectric constant and remanent polarization of BTO layer are obtained to be 180 and 3.5 μC/cm2 at 77 K, respectively. © 1995 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.115167
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  • 3
    Electronic Resource
    Electronic Resource
    Ferroelectric behavior of Li-doped ZnO thin films on Si(100) by pulsed laser deposition (1999)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 74 (1999), S. 2534-2536 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Thin films of Li-doped ZnO of different compositions (Zn1−xLix)O, x=0.1, 0.17, and 0.3 have been prepared on Si(100) substrates, with no buffer layer, by the pulsed laser deposition method. Ferroelectric behavior with a memory window of 1.2 V has been observed in capacitance–voltage measurements. The peak maximum in the capacitance–temperature curve suggests that the ferroelectric phase transition occurs around 340 K. © 1999 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.123889
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  • 4
    Electronic Resource
    Electronic Resource
    Superconductivity in epitaxial films of the oxycarbonate Sr2CuO2(CO3) converted from "infinite layer'' SrCuO2 by thermal processing (1995)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 67 (1995), S. 1310-1312 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The conversion of semiconductive SrCuO2 "infinite layer'' epitaxial films into a metallic and superconducting (Tc(approximately-equal-to)30 K) oxycarbonate phase related to Sr2CuO2(CO3) has been induced by thermal processing in oxidizing ambient containing a small amount of CO2. Ion beam analysis using the resonant 12C(p,p)12C elastic backscattering cross section for protons incident at 1.73 MeV confirms the presence of substitutional C in the converted perovskite lattice. Comparison of the threshold CO2 partial pressure with thermodynamic stability data for SrCO3 suggests that the conversion is initiated by the high affinity of Sr(O) for CO2. © 1995 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.114523
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  • 5
    Electronic Resource
    Electronic Resource
    Bronchogenic squamous cell carcinomas with invasion along alveolar walls (1996)
    Oxford, UK : Blackwell Publishing Ltd
    Histopathology 29 (1996), S. 0 
    Details
    ISSN: 1365-2559
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: In bronchogenic squamous cell carcinoma, a growth pattern along the alveolar walls of the peripheral lung parenchyma is unusual. In order better to understand the way tumour cells invade the peripheral lung parenchyma, we studied two cases of squamous cell carcinoma with invasion along the alveolar walls (in 30% to 40% of the area surrounding the tumour). We used immunohistochemical staining with antibodies against pulmonary surfactant, apoproteins (PE-10) and collagen type IV, and electron microscopy. Tumour cells invading the peripheral lung tissue were located between one layer of type II alveolar epithelial cells and the basement membrane of the alveolar walls. These results suggest that the cells of a squamous carcinoma (unlike an adenocarcinoma) have the ability to spread along the basement membrane of the alveolar walls without destroying pre-existing normal peripheral lung parenchyma.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2559.1996.tb01420.x
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  • 6
    Electronic Resource
    Electronic Resource
    THE PLACE OF RADIATION THERAPY AS DEFINITIVE TREATMENT OF BLADDER CANCER (1995)
    Oxford, UK : Blackwell Publishing Ltd
    International journal of urology 2 (1995), S. 0 
    Details
    ISSN: 1442-2042
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1442-2042.1995.tb00478.x
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  • 7
    Electronic Resource
    Electronic Resource
    THE PLACE OF RADIATION THERAPY AS DEFINITIVE TREATMENT OF BLADDER CANCER (1995)
    Oxford, UK : Blackwell Publishing Ltd
    International journal of urology 2 (1995), S. 0 
    Details
    ISSN: 1442-2042
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1442-2042.1995.tb00071.x
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  • 8
    Electronic Resource
    Electronic Resource
    In-gap density of states in hole- and electron-doped CuO2 planes probed by scanning tunneling spectroscopy (1999)
    Springer
    Applied physics 68 (1999), S. 687-690 
    Details
    ISSN: 1432-0630
    Keywords: PACS: 73.20.At; 73.40.Gk; 74.70.Vy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract. The low-energy electronic structure of a c-axis SrxAyCuO2 (A is alkaline earth cation, x+y≦1, hole- and electron-doped infinite layer) thin film, grown by laser-molecular-beam epitaxy on a SrTiO3 (001) substrate, has been studied using ultrahigh-vacuum scanning tunneling microscopy/spectroscopy. Images have been obtained for co-deposited SrxAyCuO2 thin films, which show the surface consisting of flat terraces separated by steps that are unit cell high. Tunneling spectra of undoped Sr0.3Ca0.7CuO2 indicate a wide band gap of 1.8 eV which is consistent with the charge transfer gap. Hole-doped Sr0.85CuO2 shows in-gap states appearing at both the valence and conduction band edges. In contrast, for the electron-doped Sr0.9La0.1CuO2, in-gap states appear predominantly above the Fermi level, and the spectral shape becomes asymmetric around the Fermi level. When these two systems are compared, barrier-height measurements reveal that there is no apparent shift of the Fermi level measured from the vacuum level. This suggests that the framework of the rigid-band picture might break down implying a strongly correlated electron system.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s003390050961
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  • 9
    Electronic Resource
    Electronic Resource
    Diffusive Sampling and Biological Monitoring of 2-Bromopropane (1997)
    Springer
    Archives of environmental contamination and toxicology 33 (1997), S. 23-28 
    Details
    ISSN: 1432-0703
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Medicine
    Notes: Abstract. The possibilities to apply personal ambient air monitoring by diffusive sampling and biological exposure monitoring by urinalysis for 2-bromopropane or its metabolites were explored. The abilities of carbon cloth to adsorb 2-bromopropane was examined by experimental vapor exposure followed by solvent extraction and FID-GC. Urine from factory workers and rats exposed to 2-bromopropane were analyzed for 2-bromopropane, acetone and isopropyl alcohol by FID-GC, and for bromide ion by ECD-GC after chemical methylation. Carbon cloth adsorbed 2-bromopropane in a manner linearly related to exposures up to 1500 mg/m3 and to 8 h. The adsorption could quantitatively detect a 15 min peak exposure at 3,000 mg/m3. In rat experiments, analyses of urine samples collected over a 4-h period after termination of a 4-h exposure to 2-bromopropane at 500, 1,000 or 1,500 mg/m3 showed that acetone and bromide ion were excreted dose-dependently. Essentially, no 2-bromopropane or isopropyl alcohol was detected. When the analytical methods were applied to urine samples from 5 male workers exposed to 2-bromopropane at a low level (3 mg/m3 as a geometric mean), acetone and bromide ion levels were within respective normal ranges in four cases, but were higher than the upper limits of the normal ranges in the fifth case of a foreman who probably had the highest exposure. Thus, diffusive sampling is applicable to monitor exposure to 2-bromopropane. Urinalysis for acetone and bromide ion in combination appears to be a promising selective tool for biological monitoring of occupational exposure to 2-bromopropane.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002449900218
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  • 10
    Electronic Resource
    Electronic Resource
    Mechanism of tip-assisted migration and desorption of DNA base molecules on an SrTiO3(100)- 〈 ![IGNORE[$\sqrt{5}$]] × 〈 ![IGNORE[$\sqrt{5}$]] surface (1998)
    Springer
    Applied physics 66 (1998), S. S719 
    Details
    ISSN: 1432-0630
    Keywords: PACS: 87.64.Dz; 61.16.Ch; 81.15.Ef
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: 3 (100)- × surfaces with ultrahigh vacuum scanning tunnel ing microscopy (UHV-STM) at room temperature. Adenine molecules migrate over the surface at a negative sample bias voltage and they are desorbed from the surface at a positive sample bias. The tip-assisted migration occurred in the two different modes, which are influenced by a high-intensity electric field and the tip-molecule contact interaction. The tip-assisted desorption was induced in a high-intensity electric field. These modes were based on quantitative measurements of the absolute tip-sample distance and of the electric field between the tip and the surface.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s003390051229
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