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  • 1
    Electronic Resource
    Electronic Resource
    Determination of arsenic diffusion parameters by sulfur indiffusion in gallium arsenide (2000)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 88 (2000), S. 7045-7050 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Indiffusion profiles of sulfur in gallium arsenide were determined by secondary ion mass spectroscopy. In order to evaluate the shape of the profiles, a set of coupled reaction–diffusion equations was solved numerically. From the simulated nonequilibrium indiffusion profiles of sulfur, which diffuses into gallium arsenide via the kick-out mechanism, both the diffusion coefficient and the equilibrium concentration of arsenic self-interstitials were simultaneously determined. Transmission electron microscopy revealed that, due to an arsenic supersaturation, extrinsic dislocation loops have formed. The Fermi-level effect is more pronounced at lower diffusion temperatures and provides an additional driving force for the loop formation, agreeing well with the occurrence of larger faulted loops at a diffusion temperature of 950 °C rather than at 1100 °C. The complex behavior of the sulfur indiffusion can be quantitatively described by taking into account extended defects. © 2000 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1325383
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Structure and optical properties of Si/InAs/Si layers grown by molecular beam epitaxy on Si substrate (2000)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 76 (2000), S. 2677-2679 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Epitaxial Si/InAs/Si heterostructure grown on (001) Si substrate by molecular beam epitaxy and annealed at 800 °C was investigated by high resolution transmission electron microscopy. Extensive interdiffusion leads to the formation of an InAs solid solution in the Si cap layer. Additionally, InAs-enriched regions with extensions of ∼6 nm, which exhibit two kinds of ordering are observed. The ordering of InAs molecules has occurred, respectively, in (101) and (101¯) planes inclined and (110) and (11¯0) planes parallel to the [001] growth direction. It is attributed to the energy gain from the reduced number of mixed Si–As and Si–In bonds. The sample show photoluminescence in the 1.3 μm region, which is tentatively attributed to the recombination of excitons localized in the ordered regions. © 2000 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.126441
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  • 3
    Electronic Resource
    Electronic Resource
    White cell count and intensive care unit outcome: rethinking the vocabulary (2004)
    Oxford, UK : Blackwell Science Ltd
    Anaesthesia 59 (2004), S. 0 
    Details
    ISSN: 1365-2044
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2044.2004.03591.x
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  • 4
    Electronic Resource
    Electronic Resource
    Structures and phase transitions of B-Ta2O5 and Z-Ta2O5: two high-pressure forms of Ta2O5 (2000)
    Copenhagen : International Union of Crystallography (IUCr)
    Acta crystallographica 56 (2000), S. 659-665 
    Details
    ISSN: 1600-5740
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Notes: A sample of Ta2O5, ditantalum pentaoxide, heat-treated in a `toroid'-type high-pressure chamber at P = 8 GPa and T = 1470 K, was studied by X-ray powder diffraction and high-resolution transmission electron microscopy (HRTEM). Two high-pressure modifications of Ta2O5, isostructural with B-Nb2O5 and Z-Nb2O5, were identified from the X-ray powder pattern. Both structures were refined by the Rietveld method from the X-ray diffraction data: B-Ta2O5, a = 12.7853 (4), b = 4.8537 (1), c = 5.5276 (2) Å, β = 104.264 (2)°, V = 332.45 Å3, Z = 4, space group C2/c; Z-Ta2O5, a = 5.2252 (1), b = 4.6991 (1), c = 5.8534 (1) Å, β = 108.200 (2)°, V = 136.53 Å3, Z = 2, space group C2. The Z-Ta2O5 modification is new. The Ta atoms are six-coordinated in B-Ta2O5 and seven-coordinated in Z-Ta2O5. The two structures are closely related, which makes an intergrowth and a transformation between them possible. An idealized model of the intergrowth structure has been given. The HRTEM study showed defect-rich B-Ta2O5 crystals, which could be interpreted as an intergrowth between the B-Ta2O5 and Z-Ta2O5 phases.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1107/S0108768100005462
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  • 5
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    Unknown
    Max Wehrli, Allgemeine Literaturwissenschaft (Book Review) (1953)
    Washington, etc. : Periodicals Archive Online (PAO)
    Germanic Review. 28:3 (1953:Oct.) 204 
    Details
    ISSN: 0016-8890
    Topics: German, Dutch and Scandinavian Studies
    Notes: BOOK REVIEWS
    URL: http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&res_dat=xri:pao:&rft_dat=xri:pao:article:1091-1953-003-00-000006
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  • 6
    Electronic Resource
    Electronic Resource
    Gerichtliche Geburtshilfe (1933)
    Springer
    International journal of legal medicine 22 (1933), S. 143-147 
    Details
    ISSN: 1437-1596
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine , Law
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01749319
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  • 7
    Electronic Resource
    Electronic Resource
    Vibration of finite water bodies with free surface (1952)
    Springer
    Pure and applied geophysics 22 (1952), S. 166-170 
    Details
    ISSN: 1420-9136
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Summary The study deals with expansion waves in fluids, with particular reference to hydrodynamic earthquake effects. The current assumption of steady harmonic motion is compared with the assumption that the motion is discontinuous in the sense that it starts from the initial condition of rest. A numerical example shows that the impulsive start may have a considerable influence on the dynamic water pressure.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01989634
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  • 8
    Electronic Resource
    Electronic Resource
    Vibration of hydraulic vessels (1952)
    Springer
    Pure and applied geophysics 23 (1952), S. 36-42 
    Details
    ISSN: 1420-9136
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Summary The present paper is a continuation of a previous study by the author(1), dealing with expansion waves in fluids. Relating to hydro-dynamic effects due to harmonic vibrations, with special reference to earthquakes, it contains solutions for some rigid-walled vessels of geometrically determined shape. A salient feature of the problem is that the motion is assumed discontinuous in the sense that it starts from the initial condition of rest.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01992455
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  • 9
    Electronic Resource
    Electronic Resource
    On non-artesian groundwater flow (1953)
    Springer
    Pure and applied geophysics 25 (1953), S. 37-43 
    Details
    ISSN: 1420-9136
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Summary The present paper deals with certain problems of non-artesian aquifers, with special reference to non-steady flow due to replenishment from the ground surface. Solutions are obtained by direct integration ofBoussinesq's differential equation (transformed), taking also the inclination of the groundwater surface and the slope of the bottom of the aquifer into account. — The study has some bearing on hydrological investigations. For example, it may be desired to find the location of a moving groundwater divide between two water courses, or to determine the quantity of groundwater passing between them. Problems of this nature are also often met with in water supply (artificial infiltration, etc.) and other fields of engineering practice.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02014053
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  • 10
    Electronic Resource
    Electronic Resource
    Allgemeines (1934)
    Springer
    International journal of legal medicine 23 (1934), S. 273-274 
    Details
    ISSN: 1437-1596
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine , Law
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01755853
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