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  • Articles: DFG German National Licenses  (13)
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  • Articles: DFG German National Licenses  (13)
Material
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  • 1
    Electronic Resource
    Electronic Resource
    Theory of magnetization in IV–VI based diluted magnetic semiconductors : 38th Annual Conference on Magnetism and Magnetic Materials (1994)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 75 (1994), S. 5737-5739 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The magnetization (M) in IV–VI based diluted magnetic semiconductors is expressed as a sum of contributions due to isolated impurities, pair interactions, lattice diamagnetism, and spin density due to carriers. We calculate the contribution of each of these mechanisms for p-type Pb1−xMnxTe for different x and magnetic field (H) and compare the results with experiment.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.355599
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  • 2
    Electronic Resource
    Electronic Resource
    Multiple congenital synostosis of the upper limb associated with ulnar hypoplasia and cleft hand (1996)
    Springer
    International orthopaedics 20 (1996), S. 117-118 
    Details
    ISSN: 1432-5195
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Résumé. Présentation d’un cas inhabituel d’anomalie congénitale du membre supérieur. Il s’agit d’une jeune fille de 15 ans, présentant des synostoses huméro-radiale, huméro-cubitale, inter-carpienne, et inter-métacarpienne, s’associant avec des anomalies du cubitus et une main fendue sans troisième rayon. Cette anomalie apparaît difficile à situer dans les classifications connues. Le traitement proposé a été une prothèse externe.
    Notes: Summary. A girl, 15 years of age, with humero-radial, humero-ulnar, intercarpal and intermetacarpal synostosis, associated with a deficient ulna and a cleft hand, is described. Classification was difficult. She was fitted with a prosthesis.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002640050043
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Determination of boundary-layer parameters using a vertical gill anemometer (1979)
    Springer
    Boundary layer meteorology 17 (1979), S. 93-99 
    Details
    ISSN: 1573-1472
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Abstract The paper presents a simple method to compute the stability parameter Z/L and boundary-layer parameters such as friction velocity U * and surface heat flux Q 0 on an operational basis. The method is based on the autocorrelation function of the vertical velocity which is relatively insensitive to averaging times except for very large lag times. Eddy correlation techniques on the other hand are very sensitive to averaging times.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00121938
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    The effects of mesoscale turbulence on plume rise in a land/lake environment (1984)
    Springer
    Boundary layer meteorology 29 (1984), S. 155-165 
    Details
    ISSN: 1573-1472
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Abstract An extensive data base of LIDAR and photographically measured plumes from the Nanticoke thermal generating station (located on the north shore of Lake Erie) has been accumulated over several years of full-scale atmospheric experiments. Analysis of the data shows that the empirical entrainment constant used in the Briggs simple plume rise formulation has a value of 0.8, which is significantly larger than 0.6 found by Briggs (1975). A hypothesis is proposed that mesoscale eddies present in the land/lake environment are responsible for vertical plume meander leading to the observed enhanced vertical plume spread and lower mean plume rise at this site. This is substantiated through theoretical considerations and experimental data. The results are significant in the computation of ground-level concentrations at such complex terrain sites.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00206828
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  • 5
    Electronic Resource
    Electronic Resource
    Downwind non-uniform mixing in shoreline fumigation processes (1986)
    Springer
    Boundary layer meteorology 34 (1986), S. 177-184 
    Details
    ISSN: 1573-1472
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Abstract The assumption of vertical uniform mixing in shoreline fumigation models is tested using two types of modifications to a base statistical model that takes into account non-uniform mixing. One of the modifications involves the use of a downdraft velocity scheme developed for a convective boundary layer. The other modification is based on an empirical adjustment factor derived from water tank experiments. Results from all three models are compared with field observations. Comparisons indicate that the modifications do not improve the results of the base dispersion model.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00120916
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  • 6
    Electronic Resource
    Electronic Resource
    On the dispersion parameters of plumes from tall stacks in a shoreline environment (1980)
    Springer
    Boundary layer meteorology 19 (1980), S. 175-185 
    Details
    ISSN: 1573-1472
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Abstract Experimental data for buoyant plumes released from high sources into layers having little ambient turbulence show that plume dispersion parameters vary in a manner similar to that during initial plume rise. This is consistent with general plume rise theory. Dispersion of plumes from tall stacks in a shoreline environment where a thermal internal boundary layer is formed often demonstrates this behaviour.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00117219
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  • 7
    Electronic Resource
    Electronic Resource
    Verification of a shore-line dispersion model for continuous fumigation (1980)
    Springer
    Boundary layer meteorology 19 (1980), S. 501-507 
    Details
    ISSN: 1573-1472
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Abstract This paper describes the verification of a dispersion model for a shoreline environment developed by the author in an earlier paper. It is shown that the observed concentration field reported in a case study agrees well with model predictions. Emphasis has been given to verification of the location of the maximum ground-level concentration and the downwind trend of the concentration field. This is because time-averaged concentrations are dependent on averaging time. Since a model generally predicts ensemble average concentrations which may not be achieved within half-hour periods within a convective boundary layer, numerical comparisons may not be very meaningful. Nevertheless, good agreement is found for the case study under consideration.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00122350
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    Paper (German National Licenses)
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  • 8
    Electronic Resource
    Electronic Resource
    Sudbury smelter impact on atmospheric deposition of acidic substances in Ontario (1986)
    Springer
    Water, air & soil pollution 30 (1986), S. 897-908 
    Details
    ISSN: 1573-2932
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract During the period from June 1982 to March 1983, there was a prolonged shutdown of the INCO and Falconbridge smelters at Sudbury, Ontario. Taking advantage of this opportunity, the Air Resources Branch of the Ontario Ministry of the Environment undertook a detailed analysis of the impact that the resulting emission reductions had on the atmospheric deposition of acidity and SOX in Ontario. This paper summarizes the various meteorological analyses and mathematical modeling estimates that were carried out in order to determine the contribution of the Sudbury smelters to atmospheric deposition in Ontario. For sulfates, the Sudbury contribution to the total wet deposition was typically less than 15% at the receptors studied. Furthermore, the smelters were found to contribute on the order of 10 to 20% of the total dry deposition of S compounds in central and northeastern Ontario, and less than 10% elsewhere.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00303356
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    Paper (German National Licenses)
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  • 9
    Electronic Resource
    Electronic Resource
    Synthesis of novel grafted materials with a view to inducing biodegradability into daily-use polymers - I (1995)
    New York, NY [u.a.] : Wiley-Blackwell
    Polymer International 38 (1995), S. 227-232 
    Details
    ISSN: 0959-8103
    Keywords: biodegradable polymers ; biodegradability ; graft polymers ; gelatin ; polystyrene ; daily-use polymers ; Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Twenty polystyrene-g-gelatin samples were synthesised using Ce(IV) as the free radical initiator in order to make biodegradable polystyrene. Recovery of polystyrene from acid hydrolysis of the grafted sample and the appearance of new bands of gelatin at 3479 cm-1, 3235 cm-1, 1060 cm-1 and 1370 cm-1 in the IR spectrum of the grafted polystyrene sample constituted evidence of grafting, which was substantiated by evidence from 13C NMR. Thermal studies, X-ray diffraction analysis, spectral analysis, viscosity measurements, and swelling behaviour characterised the potentially biodegradable polystyrene samples. A plausible mechanism for grafting and the probable structure of the grafted sample are suggested. Degradation studies are in progress.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pi.1995.210380302
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  • 10
    Electronic Resource
    Electronic Resource
    Theory of spin-orbit and many body effects on Knight shift (1981)
    Springer
    Hyperfine interactions 9 (1981), S. 495-500 
    Details
    ISSN: 1572-9540
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01020968
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    Paper (German National Licenses)
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