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  • 1
    Electronic Resource
    Electronic Resource
    A drop-tube apparatus to promote spherically symmetric evaporation and combustion of unsupported droplets (1991)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 62 (1991), S. 3029-3036 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: Fluid-mechanical aspects of a unique drop-tube apparatus to promote spherically symmetric evaporation and combustion of freely falling droplets are discussed. Design of the apparatus is based upon the principle that gravitationally induced pressure gradients in gases may be significantly reduced by accelerating the gases with properly contoured tubes. Droplets traveling with the gases will experience greatly reduced buoyancy and forced convection environments, promoting spherical symmetry. For specification of tube contours, the Navier–Stokes and continuity equations are recast into a vorticity-stream function formulation and solved numerically with pseudospectral methods. Axisymmetric tube contours which produce desired velocity and pressure fields are found, and implications for designs and limits of experimental apparatus are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1142520
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    200-MeV LINAC—injector of storage ring for HESYRL : International conference on synchrotron radiation instrumentation (SRI−88) (1989)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 60 (1989), S. 1701-1704 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: The 200-MeV electron linac at the Hefei National Synchrotron Radiation Laboratory (HESYRL) is described. It is not only an injector of the 800-MeV storage ring, but an electron accelerator used for nuclear physics experiments and some other applications as well. The main design parameters and measuring results of the LINAC are given. The linac is a travelling wave structure, operating at a frequency of 2856 MHz, constant impedance, in a 2/3π mode. Its total length is about 35 m. Five klystrons are used as rf power; each klystron will provide 15 MW. In November 1987, the machine was successfully commissioned and typical operating parameters are 220 MeV, and 50 mA with an energy spread of ±0.8%.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1140932
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Yeast Artificial Chromosome Cloning in the Glycerol Kinase and Adrenal Hypoplasia Congenita Region of Xp21
    Amsterdam : Elsevier
    Genomics 16 (1993), S. 407-416 
    Details
    ISSN: 0888-7543
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1006/geno.1993.1204
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Evaluation of the effect of variable refraction index on the path of a laser beam (1984)
    Springer
    Experiments in fluids 2 (1984), S. 153-158 
    Details
    ISSN: 1432-1114
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract The use of a laser-Doppler anemometer to measure velocities in a fluid with a larger variation in its refractive index perpendicular to the laser beams may introduce appreciable errors. This situation is commonly encountered in convective heat transfer studies. The beams are refracted as they pass through the fluid and the distance of the intersection of the beams, control volume, from the surface may be significantly different than the distance of the beams from the surface when they entered the fluid. If the flow is unsteady or turbulent, the relative movement of the beams may be such that the size and location of the control volume is constantly changing causing appreciable errors.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00296433
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    Paper (German National Licenses)
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  • 5
    Electronic Resource
    Electronic Resource
    Active vibration control of smart composites featuring electro-rheological fluids (1995)
    Springer
    Applied composite materials 2 (1995), S. 59-65 
    Details
    ISSN: 1573-4897
    Keywords: smart material ; electrorheological fluid ; dynamic test
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract Our experimental investigations are focused on evaluating the elastodynamic response characteristics of a beam fabricated in an electrorheological fluid when the beam is subjected to forced vibration. The beam which is designed in this experiment is composed of three kinds of materials, i.e. structural material, damping material and sealant material. Different ratios of structural material to damping material have been tested in an applied electric field. The results demonstrate clearly the ability to significantly change the vibrational characteristics of a beam fabricated in a smart composite by changing the electric field intensity imposed on the fluid domains. The ASTM standard E756-83 equations are used to evaluate the Young's modulus of the beam.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00567378
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  • 6
    Electronic Resource
    Electronic Resource
    Exact solutions of the multichannel Kondo-lattice model with infinite range hopping (1997)
    Springer
    Journal of low temperature physics 106 (1997), S. 3-19 
    Details
    ISSN: 1573-7357
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract In this work, a multichannel Kondo-lattice model is studied in the thermodynamic limit. The conduction band is described by a constant hopping amplitude between any pair of lattice sites. Because of the infinite range hopping, the dimensionality of the lattice can be arbitrary. For this system, we have obtained the exact thermodynamical properties and the ground-state energies. The metal-insulator transition of the system is discussed at zero temperature in detail, and the phase diagram is provided. Because of the infinite range hopping of the conduction band, the model we solve here is different from the usual situation. In the limit of strong interaction between the conduction electrons and the impurity spins, the wavefunctions take the Jastrow product form, which reflects the strong correlations of the impurity spins and the conduction electrons.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02403912
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    Paper (German National Licenses)
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  • 7
    Electronic Resource
    Electronic Resource
    On the chiral hubbard model and the chiral Kondo lattice model (1996)
    Springer
    Journal of statistical physics 82 (1996), S. 421-430 
    Details
    ISSN: 1572-9613
    Keywords: Hubbard model ; Kondo lattice model ; integrability
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The integrability of the one-dimensional chiral Hubbard model is discussed in the limit of strong interaction,U=∞. The system is shown to be integrable in the sense of the existence of an infinite number of constants of motion. The system is related to a chiral Kondo lattice model at strong interactionJ=+∞.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02189237
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    Paper (German National Licenses)
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  • 8
    Electronic Resource
    Electronic Resource
    Dynamic characteristics of a beam specimen featuring electrorheological fluids (1997)
    Springer
    Experimental mechanics 37 (1997), S. 1-4 
    Details
    ISSN: 1741-2765
    Keywords: Smart material ; electrorheological fluid ; dynamic test
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract The experimental investigations are focused on evaluating the elastodynamic response characteristics of beams fabricated in electrorheological (ER) fluids when the beams are subjected to forced vibration. The beams used in this experiment are composed of three kinds of materials: structural material, damping material and sealant material. Beams with different ER fluids and different structural material are made and tested. The results demonstrate clearly the ability to significantly change the vibrational characteristics of beams fabricated in smart composites by changing the electric field intensity imposed on the fluid domains. With the ASTM standard E756-83 equations, the Young's modulus of the beams and the shear modulus of ER fluids are evaluated.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02328741
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    Paper (German National Licenses)
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