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  • 1995-1999  (8)
  • 1975-1979  (4)
  • 1
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Science Ltd
    Haemophilia 4 (1998), S. 0 
    ISSN: 1365-2516
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Summary. Adequate factor substitution is a prerequisite for successful conservative or operative treatment of haemophilic synovitis. Subsequent prophylactic factor substitution can prevent further joint problems in the future. Orthopaedic treatment regimes are dependent on the classification of the synovitis and the stage of the arthropathy. Synovitis can be classified into acute and chronic forms. The arthropathy is classified according to Arnold and Hilgartner. When the synovitis has already become chronic, early arthroscopic synovectomy is recommended in order to prevent the otherwise inexorable progress of the arthropathy. Failure to treat in the early phase of the pathology causes problems in the correction of further stages. The progression of the joint disease can be shown both clincally and radiologically as the arthropathy develops, and influences the treatment.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1432-1084
    Keywords: Hemophilia ; Knee joint ; Synovial proliferation ; MR studies ; Gadolinium ; Contrast enhancement
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract A total of 17 patients with hemophilic arthropathy of the knee joint were studied with static and dynamic MRI before and after an IV bolus injection of Gadolinium-DTPA (Gd-DTPA; 0.1 mmol/kg body weight). The T1-weighted spin-echo (SE) and gradient-echo (fast-field echo [FFE]) sequences were applied. The FFE sequences of eight consecutive scans carried out over a time interval of 160 s were used in order to determine the time to signal intensity (SI) curves of the synovial proliferations surrounding soft tissue, bone marrow, and joint effusion. After the administration of a contrast agent, synovial proliferations exhibited an increase on FFE and SE images of 47.7 % (SD ± 14.3 %) and 37.4 % (SD ± 11.2 %), respectively, whereas muscle and fatty tissue, tendons, bone marrow, and joint effusion revealed only a minor increase in SI. The gradient of SI (ratio SI/time) of pannus was 39.6 %/min (SD ± 7.7 %/min) and differed significantly (P 〈 0.001) from that of bone marrow, fatty tissue, muscle tissue, tendons, and joint effusion (P 〈 0.05). In contrast to synovial proliferations in rheumatoid arthritis, no differentiation between various pannus vascularities based on the degree of enhancement was possible. The Gd-DTPA-enhanced MRI studies delineate and quantify the synovial proliferations in hemophilic arthropathy. Dynamic studies in hemophilic arthropathy do not provide qualitative assessment of the inflammatory process.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Heat and mass transfer 11 (1978), S. 103-107 
    ISSN: 1432-1181
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Description / Table of Contents: Zusammenfassung Die Auslegung eines Filmverdampfers für Brennkammern erfordert die Kenntnis des verdunstenden Massenstroms; dieser wird bestimmt durch den gekoppelten WÄrme- und Stoffübergang in der Strömungsgrenzschicht. Die Ergebnisse numerischer Untersuchungen der Massenstromdichte in laminaren Grenzschichten werden herangezogen, um die Genauigkeit einer einfach auszuwertenden analytischen NÄherungslösung zu überprüfen, wobei verÄnderliche Stoffwerte berücksichtigt werden. Die gute übereinstimmung der analytischen NÄherung mit der numerischen Lösung für Benzol zeigt die allgemeine Brauchbarkeit des Verfahrens.
    Notes: Abstract For the design of a liquid film vaporizer the knowledge of the vaporizing mass flow is necessary. This is determined by the coupled heat and mass transfer. The results of numerical studies of the mass flow rates in laminar boundary layers are taken to test the accuracy of a simple analytical approximation taking variable transport properties into account. The analytical and numerical results for benzole agree rather well pointing out thereby the general validity of this method.
    Type of Medium: Electronic Resource
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  • 4
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Elasticα-scattering angular distributions have been measured atE α=36.2 MeV, 39.6 MeV, 42.6 MeV, 49.5 MeV, 61.0 MeV for40Ca and atE α=36.2 MeV, 42.6 MeV, 49.5 MeV and 61.0 MeV for44Ca, respectively. At backward angles the data display an oscillatory structure forE α〈50 MeV and more smoothly decreasing slopes atE α =61.0 MeV resembling the data obtained at higher energies. The40Ca data belowE α =50 MeV show the well known backward enhancement, which at 42.6 MeV and 49.5 MeV can be fitted by aP 14 2 and aP 16 2 respectively. Together with previous data,P L 2-structures have now been observed for allL-values betweenL=8 andL=16. The slope of the curveL(L+1) versus excitation energy is slightly smaller forL〉12 than forL〈12. Optical model analyses (within a Woods-Saxon-folding model) lead to large differences between the44Ca and40Ca parameters. Furthermore, in our parametrization, the40Ca real potential depth shows dramatic changes with energy. This feature seems outside the domain of the optical model and requires consideration of additional effects (e.g. antisymmetrization) not included in the standard optical model. Present microscopic calculations on the basis of the Resonating Group Method are discussed in connection with the characteristic features ofα-scattering from40Ca.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Springer
    The European physical journal 276 (1976), S. 317-324 
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The elasticα-scattering from40Ca has been studied betweenE α=7.035 MeV and 7.405 MeV. Angular distributions and excitation functions have been measured in 5 keV steps. The data display a resonance atE α=7.26 MeV which by its width and angular correlation is clearly distinguished from strong Ericson fluctuations in this region. From the analysis of the angular distributions and excitation functions a spinJ π=1− is assigned to this resonance. The resonance parameters areΓ α=31 KeV,Γ total=51keV. By its spin and excitation energy this state is interpreted as a member of a quasimolecular band in44Ti the higherl-members of which are known from401Ca(α, α) scattering betweenE α=18 MeV and 50 MeV. The experimental data are compared with recent microscopic calculations within a fully antisymmetrized reaction theory.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Springer
    Chromatographia 49 (1999), S. S81 
    ISSN: 1612-1112
    Keywords: Capillary array electrophoresis ; Automation ; DNA analysis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Springer
    Acta mechanica 23 (1975), S. 193-198 
    ISSN: 1619-6937
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Description / Table of Contents: Summary At local thermochemical equilibrium the chemical production rate is determined by the flow. It is not given by kinetic relations as in the general case of nonequilibrium flow. This requires a different system of equations for the calculation of the flow field. At equilibrium the balance equations for the chemical components of a multicomponent mixture are substited by balance equations for the elements together with equilibrium relations. The equilibrium production rate is treated for a hypersonic boundary layer flow of air consisting of the components N2, O2, NO, N, and O.
    Notes: Zusammenfassung Im lokalen thermochemischen Gleichgewicht wird die chemische Produktionsdichte durch die Strömung bestimmt. Sie ist nicht wie im allgemeinen Fall der Nichtgleichgewichtsströmung über reaktionskinetische Beziehungen festgelegt. Das erfordert ein anderes Gleichungssystem zur Berechnung des Strömungsfeldes. Im Gleichgewicht treten an die Stelle der Bilanzgleichungen für die chemischen Komponenten eines polynären Gemisches Bilanzgleichungen für die Elemente zusammen mit Gleichgewichtsbeziehungen. Die Produktionsdichte im Gleichgewicht wird für eine Hyperschallgrenzschichtströmung von Luft behandelt, die aus den Komponenten N2, O2, NO, N und O besteht.
    Type of Medium: Electronic Resource
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  • 8
    ISSN: 1572-9540
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract A cooled beam of decelerated highly-charged heavy ions is slowly extracted out of the cooler and storage ring ESR, by combining the deceleration technique and the charge exchange extraction mode. The quality of the external ion beam is tested by a channeling experiment. Bare Au79+ ions are injected into the ESR at an energy of 360 MeV/u, decelerated to 53 MeV/u, and finally cooled strongly in the electron cooler. By breeding of neighboring charge state ions via radiative recombination in the electron cooler H-like ions are produced. The H-like ion fraction is extracted out of the storage ring. This extracted Au78+ ion beam is probed by a channeling experiment measuring the extinction rate of the projectile Kα X-ray yield around the [110] axis of a thin silicon crystal.
    Type of Medium: Electronic Resource
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  • 9
    ISSN: 1572-9540
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The deceleration capabilities of the ESR have been used for the first time in a dedicated ground state QED experiment conducted at the gasjet target of the ring. By decelerating bare uranium ions from 358 MeV/u down to energies of as low as 49 MeV/u, X-ray spectra have been obtained which provide an abundant yield of characteristic X-ray transitions. The experiment demonstrates that, by choosing the appropriate beam energy and gasjet target, almost all excited projectile states can be selectively populated. Moreover, the experiment provides the first data for beam lifetimes of stored decelerated high-Z ions. Such data are essential for the design of future experiments dealing with decelerated ion beams far below 50 MeV/u.
    Type of Medium: Electronic Resource
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  • 10
    ISSN: 1572-9540
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The properties of electron cooled heavy ion beams in the ESR storage ring are dominated by heating due to intrabeam scattering. For low intensity ion beams a sudden reduction of the longitudinal ion beam temperature has been detected by Schottky noise analysis. This can be interpreted as the disappearance of intrabeam scattering heating which could allow a longitudinal ordering of the ion beam.
    Type of Medium: Electronic Resource
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