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Träfflista för sökning "LAR1:cth srt2:(2000-2009)"

Sökning: LAR1:cth > (2000-2009)

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21.
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22.
  • Aalto, Susanne, 1964 (författare)
  • Molecular Gas and Starformation in Interacting Galaxies
  • 2004
  • Ingår i: in Proceedings of "The Neutral ISM in Starburst Galaxies", Marstrand, June 2003, eds. Aalto S., Huettemeister S., Pedlar A., Astron. Soc. of the Pac. Conf. Series, San Francisco. - 1583811826 ; , s. 3-18
  • Konferensbidrag (refereegranskat)
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23.
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24.
  • Aalto, Susanne, 1964 (författare)
  • Molekyler i galaxer
  • 2007
  • Ingår i: Populär Astronomi. ; :2, s. 30-33
  • Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)
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25.
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26.
  • Aalto, Susanne, 1964 (författare)
  • Probing Molecular Gas Properties in Starbursts and AGNs
  • 2005
  • Ingår i: in Proceedings of “The Evolution of Starbursts”, Bad Honnef 16-20 August 2004, AIP Conference Proceedings, American Institute of Physics. - 0735402701 ; :783, s. 123-134
  • Konferensbidrag (refereegranskat)
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27.
  • Aarnio, H., et al. (författare)
  • Photoinduced absorption in an alternating polyfluorene copolymer for photovoltaic applications
  • 2006
  • Ingår i: Chemical Physics. ; 321:1-2, s. 127-132
  • Tidskriftsartikel (refereegranskat)abstract
    • The authors present a detailed study of a novel alternating polyfluorene copolymer, poly[2,7-(9,9-dioctyl-fluorene)-alt-5,5-(4',7'-di-2-thienyl-2',1',3-benzo-thiadiazole)], and its blends with the fullerene deriv. [6,6]-phenyl-C61-butyric acid Me ester, using continuous wave photoinduced absorption (PA) techniques. The authors also present the use of phase information from the PA measurements for estg. the no. of different photoexcitation types present in the PA spectra as well as their lifetimes. In all blends the PA spectra show a broad high-energy PA band ranging from .apprx.1 to 2 eV as well as a low-energy band at .apprx.0.35 eV. The authors find two kinds of excitations present at 80 DegK, polarons showing dispersive recombination with lifetimes of roughly a millisecond, and a 2nd kind of photoexcitation tentatively assigned to coulombically bound intrachain polaron pairs showing practically nondispersive recombination with a lifetime of .apprx.20 ms. [on SciFinder (R)]
  •  
28.
  • Aarnio, Harri, et al. (författare)
  • Recombination studies in a polyfluorene copolymer for photovoltaic applications
  • 2005
  • Ingår i: Synthetic Metals. - : Elsevier BV. - 0379-6779. ; 155:2, s. 299-302
  • Tidskriftsartikel (refereegranskat)abstract
    • We present detailed continuous wave (cw) and transient photoinduced absorption (PA) measurements in thin films of a novel alternating polyfluorene copolymer, poly[2,7-(9,9-dioctyl-fluorene)-alt-5,5-(4',7'-di-2-thienyl-2',1',3-benzo-thiadiazole)] (DiO-PFDTBT), and its blends with the sol. fullerene deriv. [6,6]-phenyl-C61-butyric acid Me ester (PCBM) in wt. ratios of 1:0, 4:1 and 1:4. We measure the frequency, intensity and temp. dependence of the PA signal in the frequency domain, and compare with the results obtained from the transient PA decay measurements in the time domain. In all blends, the PA spectrum shows a broad high energy PA band ranging from .apprx.1 eV to 2 eV as well as a low energy band peaking at .apprx.0.35 eV. We attribute the low energy band to the P1 transition of polarons and part of the high energy band to the correlated P2 transition of polarons. Both frequency and time domain measurements show that the high energy band has two decay components, a faster component in the microsecond time regime and a slower component in the millisecond time regime. The slow component is strongly dispersive, whereas the fast component is practically non-dispersive. [on SciFinder (R)]
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29.
  • Aazh, H, et al. (författare)
  • Influence of ear canal occlusion and static pressure difference on bone conduction thresholds: Implications for mechanisms of bone conduction
  • 2005
  • Ingår i: International Journal of Audiology. - : Informa Healthcare. - 1499-2027 .- 1708-8186. ; 44:5, s. 302-306
  • Tidskriftsartikel (refereegranskat)abstract
    • The effect of air pressure change on bone conduction (BC) hearing thresholds in the occluded ear was investigated. The pump manometer system of an impedance bridge was used to change the air pressure in the ear canal of twenty-two normally hearing subjects. BC thresholds were measured with: (1) open ear; (2) the ear canal occluded with a probe tube and application of 0 daPa air pressure; and (3) the ear canal occluded with a probe tube and application of -350 daPa air pressure. Thresholds were lower in condition 2 than in condition 1, the difference decreasing from 27 dB at 2500 Hz to 4.5 dB at 2000 Hz. Thresholds were higher in condition 3 than in condition 2. The results are interpreted in terms of changes in the relative contribution of the three routes of transmission for BC sound produced by occlusion and by a static pressure difference.
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30.
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