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  • pharmacokinetics  (417)
  • 42.60  (90)
  • Springer  (507)
  • American Chemical Society (ACS)
  • 1980-1984  (507)
Collection
Keywords
Publisher
  • Springer  (507)
  • American Chemical Society (ACS)
Years
Year
  • 1
    Electronic Resource
    Electronic Resource
    A note on the rôle of generalized inverse Gaussian distributions of circulatory transit times in pharmacokinetics (1984)
    Springer
    Journal of mathematical biology 20 (1984), S. 95-102 
    Details
    ISSN: 1432-1416
    Keywords: pharmacokinetics ; generalized inverse Gaussian distribution ; recirculatory model ; renewal theory
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Mathematics
    Notes: Abstract Based on a stochastic pharmacokinetical model (which mirrors topological properties of the circulatory system) it is shown by reinterpreting results of Wise (1974) that if the transit times of circulating drug molecules have a generalized inverse Gaussian distribution the corresponding residence times are gamma distributed. The condition that the probability of elimination of a drug molecule in a single circulatory passage is sufficiently small appears to be valid for most drugs. Thus theoretical evidence is given for fitting blood concentration-time curves following bolus injection of a single dose by power functions of time.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00275864
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  • 2
    Electronic Resource
    Electronic Resource
    Coherence time measurement of picosecond pulses by a light-induced grating method (1980)
    Springer
    Applied physics 21 (1980), S. 215-219 
    Details
    ISSN: 1432-0630
    Keywords: 42.60
    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 temporal coherence function |Γ(τ)| of picosecond pulses from a Nd: YAG laser has been measured by diffraction at a transient grating. The coherence timet c =7 ps is small compared to the pulse widtht p =22 ps but is in correspondence with the spectral bandwidth Δv=12·1010 Hz. The new method for measuring the coherence function |Γ(τ)| is discussed and compared with a previous experiment.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00886171
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  • 3
    Electronic Resource
    Electronic Resource
    Solvent effects on the gain of rhodamine 6G (1980)
    Springer
    Applied physics 23 (1980), S. 253-258 
    Details
    ISSN: 1432-0630
    Keywords: 42.60 ; 78.30 ; 78.60
    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 effect of solvents on the gain and the peaks of gain spectra is investigated for rhodamine 6G (R6G) under nitrogen laser pumping. The non-specific solute-solvent interaction for R6G is found to be mainly dispersive. Additional shifts produced for R6G in certain solvents are explained as due to hydrogen bonding. The gain characteristics are interpreted on the basis of the position and overlap of absorption and fluorescence spectra, the quantum yield, the absorption at the pumping wavelength and the refractive index of the solvent. For the solvents studied it is found that R6G has high gain in solvents with low refractive index and high polarity. Amongst the solvents studied the alcohols displayed the highest gain with methanol being the most suitable solvent. The lowest gain amongst the alcohols was with capryllic alcohol which gave a gain that was 69% of that obtained with methanol. Amongst all the solvents studied the lowest gain was with chloroform, being only 34% of the gain in methanol.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00914908
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  • 4
    Electronic Resource
    Electronic Resource
    The lanthanideβ″ aluminas (1983)
    Springer
    Applied physics 32 (1983), S. 159-161 
    Details
    ISSN: 1432-0630
    Keywords: 66.30 ; 61.70 ; 42.60
    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 entire sodium ion content of sodiumβ″ alumina (Na1.67Mg0.67Al10.33O17) can be replaced with a variety of lanthanide ions by simple diffusion reactions at moderate temperatures (500–700°C). Lanthanideβ″ alumina crystals are hard, clear, chemically stable, and have well-defined crystal structures. The fluorescence spectrum of Nd3+ inβ″ alumina is similar to that in YAG. The lifetime of the4 F 3/2 state of Nd3+ in completely-exchangedβ″ alumina (350μs at 1021 Nd3+ cm−3) is about 45% longer than in YAG (240μs at 1020Nd3+ cm−3). The lanthanideβ″ aluminas may be of considerable interest as new phosphor and laser host materials.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00616612
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  • 5
    Electronic Resource
    Electronic Resource
    Stabilization method of an infrared two-wavelength laser (1981)
    Springer
    Applied physics 24 (1981), S. 65-66 
    Details
    ISSN: 1432-0630
    Keywords: 42.72.+h ; 42.55.Fn ; 42.60
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract A simple method for stabilizing a He-Xe laser, which simultaneously operates at two wavelengths of 3.51 μm and 3.37 μm, is described. This stabilization method depends on the comparison of the light intensities of the two wavelengths, and has a possibility of realizing a stability of better than 1×10−8 with unmodulated output.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00900400
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  • 6
    Electronic Resource
    Electronic Resource
    Tunable infrared generation using the 6s−5d Raman transition in caesium vapour (1980)
    Springer
    Applied physics 21 (1980), S. 199-204 
    Details
    ISSN: 1432-0630
    Keywords: 42.60 ; 42.65
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract Coherent infrared radiation tunable between 1.6 and 3.2 μm was generated with a pulsed dye laser by 6s−5d 5/2 stimulated electronic Raman scattering in caesium vapour. We describe a technique using thermal dissociation to reduce the density of caesium dimers in a heat-pipe oven, which produced a factor of 7 reduction in Raman threshold. The threshold displayed a marked dependence on pump bandwidth.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00886169
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  • 7
    Electronic Resource
    Electronic Resource
    Wide-range line-tunable oscillation of an optically pumped NH3 laser (1980)
    Springer
    Applied physics 21 (1980), S. 237-240 
    Details
    ISSN: 1432-0630
    Keywords: 42.55 ; 42.60 ; 34.50
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract Selective single-line oscillation has been obtained from an NH3 laser in the range from 11 to 13 μm. Pumping of high pressure NH3−He mixture with theR(30) line of a TEA-CO2 laser made it possible to tune on more than 30 lines with the aid of a grating. However, such line tunable oscillation was not observed when theR(16) line was used for pumping. Reasons for this difference are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00886173
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  • 8
    Electronic Resource
    Electronic Resource
    Simplification of the helical TE N2 laser (1980)
    Springer
    Applied physics 21 (1980), S. 319-321 
    Details
    ISSN: 1432-0630
    Keywords: 42.55 ; 42.60
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract We report the observation that the helical TE N2 laser can effectively be simplified by giving up the use of decoupling elements as well as by abolishing the segmentation of the electrode structure. Although, as a consequence of this simplification, the operating pressure range was slightly decreased, the output power could be improved by roughly 30%, a result which is attributed to the new electrode geometry exhibiting lower inductance and lower damping losses.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00895921
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  • 9
    Electronic Resource
    Electronic Resource
    Transient behaviour of pulsed dye lasers (1980)
    Springer
    Applied physics 21 (1980), S. 353-359 
    Details
    ISSN: 1432-0630
    Keywords: 42.10 ; 42.60 ; 42.80
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract Some aspects of the transient behaviour of pulsed dye lasers are investigated both theoretically and experimentally. Relaxation oscillations induced in the output from a dye cell by an external reflector have been observed and explained, using a rate equation approximation to the physical situation in the dye cell. These oscillations are shown to play an important part in the generation of short laser pulses from long cavity dye lasers. Finally, it is proposed that 10 ps pulses can be obtained from conventional dye lasers pumped by 100 ps pulses from a high-pressure nitrogen laser.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00895927
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  • 10
    Electronic Resource
    Electronic Resource
    Periodic pulse solutions of a laser consisting of a pair of amplifiers mode locked by a fast saturable absorber (1980)
    Springer
    Applied physics 22 (1980), S. 213-218 
    Details
    ISSN: 1432-0630
    Keywords: 42.55 ; 42.60 ; 42.65
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract We present periodic solutions, which are described in terms of Jacobian elliptic functions, for the steady state pulses from a laser system consisting of a pair of amplifiers of unequal relaxation time mode locked by a “fast” saturable absorber. The pulsewidth and the average power in the pulse are expressed interms of the system parameters through two different approaches, where detailed plots are given for one of the approaches. Summary of the characters to be possessed by the amplifier pair to ensure the reliable production of shortest possible pulses is given.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00886009
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