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  • 1995-1999  (8)
  • 1975-1979  (4)
  • 1955-1959  (1)
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  • 1
    Digitale Medien
    Digitale Medien
    Control of the synovium in haemophilia (1998)
    Oxford, UK : Blackwell Science Ltd
    Haemophilia 4 (1998), S. 0 
    Details
    ISSN: 1365-2516
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Medizin
    Notizen: 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.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1046/j.1365-2516.1998.440511.x
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  • 2
    Digitale Medien
    Digitale Medien
    Resonances in low energy40Ca(α, α)-scattering and quasimolecular band in44Ti (1976)
    Springer
    The European physical journal 276 (1976), S. 317-324 
    Details
    ISSN: 1434-601X
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Physik
    Notizen: 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.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01412110
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  • 3
    Digitale Medien
    Digitale Medien
    Gasanalytische Untersuchungen bei der Bronchoskopie mit Diffusionsatmung in Barbitur-Succinylnarkose (1955)
    Springer
    European archives of oto-rhino-laryngology and head & neck 167 (1955), S. 503-508 
    Details
    ISSN: 1434-4726
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF02107789
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  • 4
    Digitale Medien
    Digitale Medien
    Hemophilic arthropathy of the knee joint: static and dynamic Gd-DTPA — enhanced MRI (1995)
    Springer
    European radiology 5 (1995), S. 547-552 
    Details
    ISSN: 1432-1084
    Schlagwort(e): Hemophilia ; Knee joint ; Synovial proliferation ; MR studies ; Gadolinium ; Contrast enhancement
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: 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.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00208351
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  • 5
    Digitale Medien
    Digitale Medien
    Analytische NÄherungslösung für die laminare Zweistoff-Grenzschichtströmung lÄngs eines ebenen verdunstenden Flüssigkeitsfilms (1978)
    Springer
    Heat and mass transfer 11 (1978), S. 103-107 
    Details
    ISSN: 1432-1181
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Maschinenbau , Physik
    Beschreibung / Inhaltsverzeichnis: 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.
    Notizen: 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.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01682611
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  • 6
    Digitale Medien
    Digitale Medien
    Gleichgewichtsströmungen reagierender Gasgemische (1975)
    Springer
    Acta mechanica 23 (1975), S. 193-198 
    Details
    ISSN: 1619-6937
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Maschinenbau , Physik
    Beschreibung / Inhaltsverzeichnis: 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.
    Notizen: 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.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01174018
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  • 7
    Digitale Medien
    Digitale Medien
    Investigation of large angle structure in α-scattering from calcium isotopes betweenE α=36–61 MeV (1978)
    Springer
    The European physical journal 286 (1978), S. 99-106 
    Details
    ISSN: 1434-601X
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Physik
    Notizen: 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.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01434618
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  • 8
    Digitale Medien
    Digitale Medien
    First experiment with decelerated bare uranium ions conducted at the ESR storage ring (1997)
    Springer
    Hyperfine interactions 108 (1997), S. 29-38 
    Details
    ISSN: 1572-9540
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Physik
    Notizen: 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.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1023/A:1012669503724
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  • 9
    Digitale Medien
    Digitale Medien
    Probing a cooled beam of decelerated highly-charged heavy ions extracted out of the ESR by a channeling experiment (1997)
    Springer
    Hyperfine interactions 108 (1997), S. 325-332 
    Details
    ISSN: 1572-9540
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Physik
    Notizen: 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.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1023/A:1012631317353
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  • 10
    Digitale Medien
    Digitale Medien
    Schottky mass spectrometry at the heavy ion storage ring ESR (1996)
    Springer
    Hyperfine interactions 99 (1996), S. 117-125 
    Details
    ISSN: 1572-9540
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Physik
    Notizen: Abstract Schottky mass spectrometry is a novel method of precision nuclear mass spectrometry based on the measurement of the revolution frequencies of cooled ions in storage rings performed by non-destructive frequency analysis of the beam noise, the well-established Schottky diagnosis technique. The method was applied for the first time at the Experimental Storage Ring ESR at GSI observing electron cooled highly charged ions up to bare nuclei at relativistic energies around several hundred MeV/u. To demonstrate the performance and feasibility of the method at the ESR, experimental tests have been carried out using beams of nuclear fragments produced in the ring itself by the interaction of different primary beams with the internal gas jet target. Futhermore, first Schottky mass measurements of secondary nuclear beams produced by projectile fragmentation of Au and Bi primary beams in a thick Be-target were carried out in order to determine the masses for numerous heavy neutron deficient nuclei which had not been measured before. Relative accuracies for the measured mass values in the order of 1×10−6 and below can be achieved. The method is briefly discussed and some early results are presented.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF02274915
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