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  • 2000-2004  (4)
  • 1
    Electronic Resource
    Electronic Resource
    Physical therapy and imaging outcome measures in a haemophilia population treated with factor prophylaxis: current status and future directions (2004)
    Oxford, UK : Blackwell Publishing Ltd
    Haemophilia 10 (2004), S. 0 
    Details
    ISSN: 1365-2516
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Summary.  Routine infusions of factor VIII to prevent bleeding, known as prophylaxis, and other intensive therapies are being more broadly applied to patients with haemophilia. These therapies differ widely in replacement product usage, cost, frequency of venous access and parental effort. In order to address residual issues relating to recommendations, implementation, and evaluations of prophylaxis therapy in persons with haemophila, a multinational working group was formed and called the International Prophylaxis Study Group (IPSG). The group was comprised of haemophilia treaters actively involved in studies of prophylaxis from North America and Europe. Two expert committees, the Physical Therapy (PT) Working Group and the Magnetic Resonance Imaging (MRI) Working Group were organized to critically assess existing tools for assessment of joint outcome. These two committees independently concluded that the WFH Physical Examination Scale (WFH PE Scale) and the WFH X-ray Scale (WFH XR Scale) were inadequately sensitive to detect early changes in joints. New scales were developed based on suggested modifications of the existing scales and called the Haemophilia Joint Health Score (HJHS) and the International MRI Scales. The new scales were piloted. Concordance was measured by the intra-class correlation coefficient of variation. Reliability of the HJHS was excellent with an inter-observer co-efficient of 0.83 and a test-retest value of 0.89. The MRI study was conducted using both Denver and European scoring approaches; inter-reader reliability using the two approaches was 0.88 and 0.87; test-retest reliability was 0.92 and 0.93. These new PT and MRI scales promise to improve outcome assessment in children on early preventive treatment regimens.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2516.2004.00978.x
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    A new magnetic resonance imaging scoring method for assessment of haemophilic arthropathy (2004)
    Oxford, UK : Blackwell Science Ltd
    Haemophilia 10 (2004), S. 0 
    Details
    ISSN: 1365-2516
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Summary.  In a European multicentre study, 39 ankles in 28 haemophilic boys were investigated by magnetic resonance imaging (MRI). A new MRI score was developed in the format A(e:s:h) for evaluating haemophilic arthropathy. This scheme provides high resolution and allows separation of different pathological components. The factor A is calculated as the sum of scores for subchondral cysts (maximum value 6), irregularity/erosion of subchondral cortex (maximum 4) and chondral destruction (maximum 6); e, s and h, respectively, represent effusion/haemarthrosis, synovial hypertrophy and haemosiderin deposition, and they are separately evaluated on a scale of 0–4. Working independently, two radiologists scored the 39 ankles twice using both this new ‘European’ scoring method and a previously published ‘Denver’ scoring scheme. Final classification was achieved by consensus. The reproducibility of the readings was assessed, and for both scoring methods the results indicated good or moderate intraobserver agreement, and good, moderate or fair interobserver agreement. These findings suggest that MRI can be useful for semiquantitative evaluation of haemophilic arthropathy, providing the examination is performed according to an appropriate protocol, and the images are evaluated by specially trained radiologists.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2516.2004.00902.x
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Case study of an InAs quantum dot memory: Optical storing and deletion of charge (2001)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 79 (2001), S. 78-80 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: We have studied self-assembled InAs quantum dots embedded in an InP matrix using photocapacitance and photocurrent spectroscopy. These dots are potentially promising for memories due to the large confinement energy for holes. In this work we have realized simple quantum dot memory by placing the dots in the space–charge region of a Schottky junction. Our measurements reveal that a maximum of about one hole can be stored per dot. We also find that illumination for an extended period deletes the stored charge. We show that these limitations do not reflect the intrinsic properties of the dots, but rather the sample structure in combination with deep traps present in the sample. © 2001 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1382628
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Deposition and characterization of screen-printed porous multi-layer thick film structures from semiconducting and conducting nanomaterials for use in photovoltaic devices (2000)
    Springer
    Journal of materials science 11 (2000), S. 355-362 
    Details
    ISSN: 1573-482X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract Three-layer structures of thick (〉5 μm) films of nanosized titanium dioxide, zirconium dioxide, and carbon have been screen-printed on a semi-production level for use in photosensitized photovoltaic devices. The films have been characterized using scanning electron microscopy (SEM), X-ray diffraction (XRD), and nitrogen adsorption/desorption. The rheology of the screen-printing pastes has been measured, and qualitatively matched to the quality of the resultant film. Three titanium dioxide candidates were evaluated for performance. At low light levels (〈300 lux, i.e., typical indoor light levels), photosensitized photovoltaic modules made from these screen-printed structures exhibited equal or superior performance to a commercially available amorphous silicon module.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1008989601919
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    Paper (German National Licenses)
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