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  • 11
    Electronic Resource
    Electronic Resource
    Symptoms prevalence among office employees and associations to building characteristics (2003)
    Oxford, UK : Munksgaard International Publishers
    Indoor air 13 (2003), S. 0 
    Details
    ISSN: 1600-0668
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Architecture, Civil Engineering, Surveying , Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1034/j.1600-0668.2003.00190.x
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  • 12
    Electronic Resource
    Electronic Resource
    Effects of charge-density-wave depinning on the low frequency shear compliance of NbSe3 (2001)
    Springer
    The European physical journal 24 (2001), S. 425-429 
    Details
    ISSN: 1434-6036
    Keywords: PACS. 71.45.Lr Charge-density-wave systems – 72.15.Nj Collective modes (e.g., in one-dimensional conductors) – 62.30.+d Mechanical and elastic waves; vibrations – 62.40.+i Anelasticity, internal friction, stress relaxation, and mechanical resonances
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract: We report on measurements of the voltage dependence of the complex shear compliance of two crystals of the charge-density-wave (CDW) conductor NbSe3, for torsional frequencies between 1 Hz and 71 Hz. For both samples, there is a frequency independent, ∼1% increase of the magnitude of the compliance when the voltage exceeds the threshold for CDW depinning, but the internal friction has a striking sample dependence which we do not understand. For one sample, there is a frequency independent decrease in internal friction with CDW depinning, suggesting that the elastic changes are not relaxational and might reflect changes in the screening of the crystal strain by the CDW. For the second sample, the sign and magnitude of the change in internal friction is strongly frequency dependent, which we associate with a change in screening due to the finite electron diffusion time. The second sample also exhibits a frequency dependent peak in internal friction near threshold that may reflect relaxation of the CDW phase.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s10051-001-8694-1
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  • 13
    Electronic Resource
    Electronic Resource
    Evaluation of a Gaussian-modified dispersion model for atmospheric release from the Marcoule nuclear site (2000)
    Springer
    Environmental modeling and assessment 5 (2000), S. 75-81 
    Details
    ISSN: 1573-2967
    Keywords: modified Gaussian model ; in situ measurements ; model evaluation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract This paper presents a mathematical model of local pollutant dispersion designed to compute the concentration field above and around the Marcoule nuclear site. The model is based on integrating the classical turbulent diffusion equation, corrected (prior to integration) by experimental wind tunnel data obtained for a scaled-down model of the site. The computed results are compared with full-scale experimental observations at Marcoule in the case of neutral atmosphere. A comparison with the standard Gaussian model is also made. Finally, a critical analysis of the model is presented.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1019001409408
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  • 14
    Electronic Resource
    Electronic Resource
    Specific heats of the charge density wave compounds o-TaS and (TaSe ) I (2002)
    Springer
    The European physical journal 29 (2002), S. 71-77 
    Details
    ISSN: 1434-6036
    Keywords: PACS. 71.45.Lr Charge-density-wave systems – 65.40.Ba Heat capacity – 64.70.Kb Solid solid transitions – 64.70.Pf Glass transitions
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract: Specific heats of the charge-density-wave compounds o-TaS3 and (TaSe4)2I have been measured over the wide temperature interval 10 K-300 K. Both systems exhibit strong non-Debye behavior. Very weak and broad anomalies are observed at the Peierls transition temperatures. For o-TaS3, the change in the curvature of the specific heat occurs at temperature of 40 K where glass transition has been deduced from dielectric measurements, and an extended scaling analysis suggests that the glass transition is associated with a dynamical cross over in length scales. We briefly discuss the characteristics and physical origins of the anomalies at both the Peierls and glass transitions.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1140/epjb/e2002-00263-1
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  • 15
    Electronic Resource
    Electronic Resource
    Nuclear quadrupole interaction in the low dimensional hf-trichalcogenides (1990)
    Springer
    Hyperfine interactions 60 (1990), S. 907-914 
    Details
    ISSN: 1572-9540
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract We report on Time Differential Perturbed Angular Correlation measurements of the nuclear quadrupole interaction of181Hf(β−)181 and its temperature dependence in the low dimensional Hf- trichalcogenides HfS3, HfSe3 and HfTe3. In HfS3 the temperature dependence of the precession frequency is a slowly decreasing function with a negative curvature, the deviation from axial symmetry of the electric field gradient is practically temperature independent. In HfSe3 the NQI shows a peculiar behaviour; between 10K and 300K the quadrupole frequency and the asymmetry parameter increase, between 300K and 400K the frequency decreases while the deviation from axial symmetry increases, indicating a structural phase transition near room temperature. In HfTe3 the quadrupole frequency is practically temperature independent below 600K and increases linearely at higher temperatures, the asymmetry parameter increases steadily in the temperature range from 10K to 600K and then decreases. There is a strong correlation between the strength and the asymmetry of the electric field gradient so that the system depends on one control parameter only.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02399899
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  • 16
    Electronic Resource
    Electronic Resource
    Effect of epidermal growth factor on rat pleural mesothelial cell growth (1990)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Cellular Physiology 144 (1990), S. 137-143 
    Details
    ISSN: 0021-9541
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: We recently reported that the growth of normal rat pleural mesothelial cells (RPMCs) is inhibited by conditioned media from either in vivo or in vitro transformed RPMCs. In this study we report that the growth of normal RPMCs is inhibited by epidermal growth factor (EGF). This was demonstrated by using three methods of investigation. Two types of studies were carried out with growing cells. First, cell counts indicated that the number of cells was reduced in EGF-treated cultures when compared with untreated cultures. Second, the percentage of S cells detected by flow cytometry following treatment with EGF was lower than without EGF. In other experiments, incorporation of tritiated thymidine in confluent cells was decreased by EGF treatment, either in the presence or absence of fetal calf serum; these effects were dose dependent and were observed from 2 ng/ml EGF. Lower EGF concentrations did not significantly modify thymidine incorporation when compared with untreated cells. Analysis of 125I EGF binding experiments by the Scatchard method indicated that RPMCs possess EGF receptors (about 105 per cell) with low ligand binding affinity (Kd = 1.7 ± 0.4 nM). These results indicate that EGF might modulate the growth of RPMCs.
    Additional Material: 7 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jcp.1041440118
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  • 17
    Electronic Resource
    Electronic Resource
    ESCA investigation of SnOx films used as gas sensors (1994)
    Chichester [u.a.] : Wiley-Blackwell
    Surface and Interface Analysis 22 (1994), S. 372-375 
    Details
    ISSN: 0142-2421
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Physics
    Notes: The electronic properties of amorphous and ion-implanted polycrystalline SnO2 films have been studied using x-ray photoemission spectromicroscopy. First, we analysed the degree of oxidation and the homogeneity of as-deposited films. The SnO and SnO2 phases were identified from their valence band spectra rather than from the Sn 3d core level spectra. Then we studied the damage effects due to the implantation of Pd+ and Ga+ ions in polycrystalline films. The ion bombardment of SnO2 films results in drastic changes of valence-band spectra which is correlated to compositional changes. Annealing in air at 600 °C for 4 h leads to complete recovery of radiation damage. However, after such thermal annealings, the film surface still contains a relatively high amount of SnO (5-10%).
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/sia.740220181
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