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  • 1
    Electronic Resource
    Electronic Resource
    Systemic lidocaine induces expansion of the receptive field of spinal dorsal horn neurons in rats (1998)
    Springer
    Experimental brain research 118 (1998), S. 431-434 
    Details
    ISSN: 1432-1106
    Keywords: Key words Lidocaine ; Dorsal horn neurons ; Nociception ; Receptive field ; Spinal cord
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract  The effect of intravenous administration of the local anaesthetic lidocaine (1, 3 or 5 mg/kg) on the responsiveness and size of the cutaneous receptive fields of 18 lumbar dorsal horn neurons was examined in intact urethane-anaesthetized rats. Lidocaine induced expansion of the receptive field in the majority of neurons examined, particularly after the two higher doses. The expansion occurred usually within 10 min after lidocaine injection and the effect was reversible. Lidocaine also altered the responsiveness of dorsal horn neurons to peripheral mechanical stimulation. The responses of wide-dynamic-range neurons to noxious pinch were usually inhibited by lidocaine. However, some low-threshold neurons started to react to noxious mechanical stimulation and some high-threshold neurons started to respond to innocuous brushing after lidocaine injection. The present results show that moderate doses of systemic lidocaine induce complex changes in the excitability of dorsal horn neurons, including an increase in the size of the receptive field and altered response characteristics to mechanical stimulation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002210050298
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  • 2
    Electronic Resource
    Electronic Resource
    Magnetic Acceptor Complex in Mn-Doped GaAs: A New Type of Exchange Center (1995)
    s.l. ; Stafa-Zurich, Switzerland
    Materials science forum Vol. 182-184 (Feb. 1995), p. 627-630 
    Details
    ISSN: 1662-9752
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/02/01/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.182-184.627.pdf
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  • 3
    Electronic Resource
    Electronic Resource
    Optical response of single-crystal (La,Ca)MnOδ thin films (1996)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 79 (1996), S. 1810-1812 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: (La,Ca)MnOδ thin film can be used as a bolometer operated over a wide temperature range around its metal–semiconductor transition where its resistance (R) changes rapidly. This material has a high optical absorption coefficient over a broad wavelength range and is chemically stable in air. We measured the optical response of single-crystal (La,Ca)MnOδ thin films to a He–Ne laser (632.8 nm) as a function of temperature (T), light modulation frequency (f), bias current (I), and laser power (P). The temperature dependence of the measured signal follows the dR/dT curve and the signal depends linearly on I and P. These results indicate that the response is mainly bolometric. Room temperature operation is possible if the sample composition and oxygen stoichiometry are adjusted appropriately. © 1996 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.360974
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  • 4
    Electronic Resource
    Electronic Resource
    Regulation of the phonotactic threshold of the female cricket, Acheta domesticus : juvenile hormone III, allatectomy, L1 auditory neuron thresholds and environmental factors (1998)
    Springer
    Journal of comparative physiology 182 (1998), S. 635-645 
    Details
    ISSN: 1432-1351
    Keywords: Key words Phonotactic threshold ; Juvenile hormone III ; Allatectomy ; Environmental influences ; Auditory interneuron
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract Juvenile hormone III (JHIII), when applied to the abdomen of 1-day-old female Acheta domesticus (in quantities that would create JHIII titers in the hemolymph that were within the range measured in females of this species) caused a significant decrease in phonotactic thresholds (Fig. 1). Removal of the corpora allata from 5-day-old females with low phonotactic thresholds caused significantly increased phonotactic thresholds 2–5 days later. After a temporary increase (24 h) of, on average, about 25 dB, the phonotactic thresholds drop to about 10 dB above preallatectomy levels (Fig. 2), but remain significantly higher than controls. Application of JHIII to allatectomized females, with a mean increase in thresholds of 20 dB, results in significantly decreased thresholds (mean of about 20 dB) over the next 6 h (Fig. 3). Exposure to males 1 week before the imaginal molt causes the phonotactic thresholds of postimaginal females to drop 1–2 days significantly earlier than controls (Fig. 4). One- and 3-day-old females, phonotactically tested only once, exhibit lower thresholds in the early morning than they do in the late afternoon (Fig. 5). Five-day-old females do not exhibit such a diurnal rhythm. Phonotactically testing females more than once a day significantly influences their phonotactic thresholds (Figs. 6, 7). In 1-day-old females, with high (above 70 dB) phonotactic thresholds, the threshold of their L1 auditory interneurons can be 30 dB or more below their phonotactic threshold (Fig. 8). In females with phonotactic thresholds of 70 dB or lower, the L1 threshold is within 10 dB of their phonotactic threshold. Both JHIII and allatectomy influence phonotactic and L1 thresholds in a similar manner.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s003590050209
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  • 5
    Electronic Resource
    Electronic Resource
    Room Temperature Bolometric Applications Using Manganese Oxide Thin Films (1999)
    Springer
    International journal of infrared and millimeter waves 20 (1999), S. 2113-2120 
    Details
    ISSN: 1572-9559
    Keywords: manganese oxide thin films ; bolometer ; room temperature operation ; noise
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract We report the optical responses of magnetic manganese oxide La2/3Ca1/3MnOδ thin films at room temperature. The voltage responses to a He-Ne laser at the wavelength of 0.63 μm and incident infrared (IR) power at the wavelength of 8-14 μm were measured. The measured signals were attributably to a bolometric response due to the heating of the sample by radiation. We report the optical responses in La2/3Ca1/3MnOδ thin films as a function of chopping frequency and bias current. The noise behavior around room temperature was also discussed. It is suggested that perovskite manganese oxide thin films are suitable candidates for uncooled optical detectors.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1022699005844
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  • 6
    Electronic Resource
    Electronic Resource
    Influence of deposition temperature on the superconductivity of Y1−x HoxBa2Cu3O7 −δfilms produced by dc-magnetron sputtering (1996)
    Springer
    Journal of superconductivity 9 (1996), S. 519-522 
    Details
    ISSN: 1572-9605
    Keywords: Y1−x HoxBa2Cu3O7 −δ ; films ; magnetron sputtering
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology , Physics
    Notes: Abstract Experimental results of research on the influence of deposition temperature (T s) on crystal structure and superconductivity of Y1−x HoxBa2Cu3O7 −δ (YHBCO) films deposited by dcmagnetron sputtering are reported. X-ray diffraction analysis showed that the films grew with preferential orientation of thec-axis normal to the substrate surface in the range of temperature 750–820°C. The single-crystal structure of the YHBCO films grown epitaxially at the optimal substrate temperatures of 820, 800, 760, and 750°C, respectively, have been established by rocking curves, Φ-scan, and electron channeling pattern (ECP). Typical values of the critical current density (A · cm−2) at 77 K and 0.1 T field are 2.1×105, 4×105, 6.2×105, and 3.1×105 for thex=0, 0.2, 0.4, 0.7 films respectively, measured by a Quantum Design magnetrometer (H∥c).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00723524
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  • 7
    Electronic Resource
    Electronic Resource
    Critical current density and flux pinning in Y1−x Ho x Ba2Cu3O7−δ epitaxial films (1996)
    Springer
    Journal of superconductivity 9 (1996), S. 589-592 
    Details
    ISSN: 1572-9605
    Keywords: Critical current ; flux pinning ; Y1−x Ho x Ba2Cu3O7−δ
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology , Physics
    Notes: Abstract The critical current densityJ c of Y1−x Ho x Ba2Cu3O7−δ (YHBCO) epitaxial thin films withx=0, 0.2, 0.4, 0.7 at various temperatures and magnetic fields has been measured magnetically. TheJ c and flux pinning density Fp values are significantly enhanced with the Ho substitute amountx with the optimal effect achieved at Ho concentration around x=0.4 in the entire measured temperature (30–77 K) and magnetic field (0–3 T) ranges. X-ray diffraction patterns have shown that the greater the lattice deformation, the higher theJ c of the films.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00728238
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  • 8
    Electronic Resource
    Electronic Resource
    Preparation of epitaxial Y1-xHoxBa2Cu3O7-δ high Tc films on (100)Zr(Y)O2 substrates (1997)
    Springer
    Journal of materials science 16 (1997), S. 308-309 
    Details
    ISSN: 1573-4811
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract Abstracts are not published in this journal
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1018561404054
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