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  • 1
    Electronic Resource
    Electronic Resource
    F-wave latency serves as the most reproducible measure in nerve conduction studies of diabetic polyneuropathy: multicentre analysis in healthy subjects and patients with diabetic polyneuropathy (2000)
    Springer
    Diabetologia 43 (2000), S. 915-921 
    Details
    ISSN: 1432-0428
    Keywords: Keywords Nerve conduction study, reproducibility, F-wave latency, diabetic polyneuropathy, serial study, drug trial, intraclass correlation coefficient (ICC), intertrial variation, nerve conduction velocity, sensory nerve action potential, motor conduction velocity.
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Aims/hypothesis. For use in future drug development for diabetic polyneuropathy, we conducted multicentre trials to assess the reproducibility of nerve conduction studies.¶Methods. All measurements were repeated twice at a time interval of 1–4 weeks in 132 healthy subjects (63 men) and 172 patients (99 men) with diabetic polyneuropathy. Using a standardised method, 32 centres participated in the study of control subjects and 65, in patients with diabetic polyneuropathy. Motor nerve conduction studies consisted of stimulating the left median and tibial nerves and recording the compound action potential from abductor policis and adductor hallucis for measuring amplitude, terminal latency and minimal F-wave latency. For sensory conduction studies, sensory nerve action potentials were recorded antidromically from the second digit and the posterior aspect of the lateral malleous after distal stimulation of the left median and sural nerves. We also calculated motor conduction velocity, F-wave conduction velocity and sensory conduction velocity. The relative intertrial variation and intraclass correlation coefficient were used as an index of reproducibility.¶Results. Of all the measurements, F-wave latency yielded the highest intraclass correlation coefficient with the smallest relative intertrial variation for both median and tibial nerves in both groups.¶Conclusion/interpretation. Median and tibial F-wave latency provide the most reproducible measures for a nerve conduction study, serving as one of the best measures in multicentre drug trials for diabetic polyneuropathies. [Diabetologia (2000) 43: 915–921]
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s001250051469
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  • 2
    Electronic Resource
    Electronic Resource
    Effect of captopril or enalapril on renal prostaglandin E"2
    Amsterdam : Elsevier
    Prostaglandins 38 (1989), S. 401-411 
    Details
    ISSN: 0090-6980
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Medicine
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0090-6980(89)90123-8
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  • 3
    Electronic Resource
    Electronic Resource
    Observation of the A ^2Σ^+ 〈- X ^2Π"3"2 transition of nitric oxide with two-photon degenerate four-wave mixing
    Amsterdam : Elsevier
    Chemical Physics Letters 220 (1994), S. 29-34 
    Details
    ISSN: 0009-2614
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0009-2614(94)00130-8
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  • 4
    Electronic Resource
    Electronic Resource
    Epitaxial growth and properties of YBa2Cu3O7−y/LaSrGaO4/YBa2Cu3O7−y trilayer structures (1994)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 64 (1994), S. 779-781 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: We report the successful synthesis of insulating LaSrGaO4(LSGO) thin films and YBa2Cu3O7−y(YBCO)/LSGO heteroepitaxial multilayer structures using a pulsed laser deposition technique. SrTiO3(STO)(100) was used as a substrate. The formation of highly c-axis oriented YBCO/LSGO/YBCO trilayer structures is demonstrated. Epitaxial YBCO films on LSGO//STO and LSGO/YBCO//STO have a zero resistance temperature of 88.5 and 88.3 K, respectively. Sandwich-type YBCO/LSGO/YBCO junctions were produced by a suitable patterning technique. The observed (dI/dV)-V characteristics exhibit a clear single gap structure (width ∼26 meV) at temperatures below 30 K.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.111011
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  • 5
    Electronic Resource
    Electronic Resource
    Process optimization studies of high performance recordable minidiscs : The 41st annual conference on magnetism and magnetic materials (1997)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 81 (1997), S. 3842-3844 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: In this study, the effect of process parameters on magnetic and recording properties of MiniDiscs is reported. Processes have been tailored to optimize the recording performance of MiniDiscs, such as carrier-to-noise ratio (CNR) at low magnetic fields, recording power margin, and recording power threshold. At higher deposition pressures or lower deposition rates of TbFeCoCr, the external bias field sensitivity of the carrier becomes worse but the noise at high bias fields (〉200 Oe) decreases, resulting in improved CNR at high bias fields. Disks with TbFeCoCr sputtered at low pressure or high deposition rates produce a high error rate at high recording power (〉4.5 mW), due to jitter noise caused by interference of neighboring magnetic domains. The power margin of the disks is strongly affected by the pressure and deposition rate of TbFeCoCr. When the Curie temperature of the TbFeCoCr layer is lowered by 30 °C (alloy change), the power margin decreases significantly and CNR is decreased by ∼2 dB because of low Kerr rotation. CNR values well above 49.5 dB are easily achieved on MiniDiscs with optimized TbFeCoCr and SiN layers. © 1997 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.364726
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  • 6
    Electronic Resource
    Electronic Resource
    LaSrGaO4 substrate gives oriented crystalline YBa2Cu3O7−y films (1991)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 59 (1991), S. 2886-2888 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: As-grown YBa2Cu3O7−y (YBCO) thin films of 70 nm thickness have been prepared on LaSrGaO4(001), (100), and (110) single-crystal substrates at 700 °C using ArF laser ablation deposition. The c-axis oriented thin films with smooth surface morphology are obtained on LaSrGaO4 (001) and (100) substrates. The zero resistance temperatures (Tc) of the films on the (001) and (100) substrates are 90.0 K, and 88.1 K, respectively. On the (110) substrate, (110) YBCO planes grow epitaxially. The resistance perpendicular to the c axis in this film is 1/3 of that parallel to the c axis, showing Tc⊥=85.9 K and Tc(parallel)=84.4 K, respectively. These results suggest that a LaSrGaO4 substrate having a low dielectric constant is an excellent substrate for the epitaxial growth and device application of high-Tc YBa2Cu3O7−y superconducting films.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.105842
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  • 7
    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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  • 8
    Electronic Resource
    Electronic Resource
    a-axis oriented epitaxial YBa2Cu3O7−y/PrBa2Cu3−xNbxO7−z multistructures (1993)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 63 (1993), S. 1576-1578 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Using the pulsed laser deposition technique, we have successfully prepared a-axis oriented PrBa2Cu3−xNbxO7−z (PBCNO)(x=0–1.5) films and YBa2Cu3O7−x (YBCO)/PBCNO heterorepitaxial multilayer structures. For the PBCNO films, the resistivity showed semiconducting behavior at all Nb substitution levels investigated. The resistivity increased with increasing Nb content, reaching a value of 104 Ω cm at 100 K for a 300-A(ring)-thick film with x=1.0. Using (100)SrTiO3 (STO) as a substrate, the following multilayer structures were successfully formed: (100)PBCNO(x=1.0)/(100)YBCO/(100)PBCO//STO, (001) YBCO/(100)PBCNO(x=1.0)/(100)PBCO//STO, and (100)YBCO/(100)PBCO/(100)PBCNO(x=1.0)/(100)PBCO//STO. The bottom and top YBCO layers in the (100)YBCO/(100)PBCO/(100)PBCNO/(100)PBCO/(100)YBCO//STO structure showed superconducting transition temperatures (zero resistance) of 82 and 83 K, respectively. The interlayer resistivity of the 200-A(ring)-thick PBCNO(x=1) interlayer was as high as 105 Ω cm at 30 K.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.110809
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  • 9
    Electronic Resource
    Electronic Resource
    YBa2Cu3O7−y microbridges on Y2O3/yttria-stabilized zirconia/SiO2/Si(100) (1992)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 61 (1992), S. 2709-2711 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: YBa2Cu3O7−y (YBCO) microbridges have been fabricated on a SiO2/Si substrate using Y2O3/YSZ (yttria-stabilized zirconia) buffer layer. Using polycrystalline silicon layer overlaid on oxidized Si(100) single crystal, the bridge is microprocessed by means of electron beam lithography and dry etching. The fabricated configuration serves as a mask for depositing YSZ and Y2O3 double buffer layers. The YBCO layer is deposited on the substrate by means of laser ablation deposition. The dimension of the bridge is 1.7 μm wide and 1.3 μm long. The microbridge junctions show a critical temperature of 86 K, and microwave-induced steps are observed indicating the presence of a Josephson junction-type behavior. The IcRn product is 0.5 mV at 30 K.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.108483
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  • 10
    Electronic Resource
    Electronic Resource
    a-axis oriented growth of YBa2Cu3O7−y films on LaSrGaO4(100) substrates (1992)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 61 (1992), S. 1134-1136 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: We have grown a-axis oriented YBa2Cu3O7−y (YBCO) films on LaSrGaO4 (LSGO) (100) substrates with (100) oriented seed layer of PrBa2Cu3O7−x (PBCO) using a pulsed laser deposition technique. PBCO films on LSGO (100) deposited even at ∼800 °C exhibits the a-axis orientation. In this temperature range, PBCO films on SrTiO3 (100) substrate exhibits the c-axis orientation. The YBCO film with a-axis orientation was grown on this PBCO(100) layer at a wide range of 650–800 °C. The YBCO films on PBCO free substrates have, on the other hand, c-axis orientation normal to the surface of the LSGO (100). We found that the preferred orientations of YBCO thin films can be controlled by the presence of PBCO films on LSGO substrate. For the a-axis orientated YBCO films, the resistance perpendicular to the c axis is 1/2 of that parallel to the c axis, suggesting the preferred orientation of c axis along the surface. The zero resistance superconducting transition temperature (Tc) of the films on the LSGO (100) and PBCO (100)/LSGO (100) substrates are 88.0 and 89.0 K, respectively.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.107692
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