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  • Electronic Resource  (5)
  • 1995-1999  (5)
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  • Electronic Resource  (5)
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  • 1
    Electronic Resource
    Electronic Resource
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 85 (1999), S. 5042-5044 
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: We clarified the mechanism of thermal deterioration that occurs in the CoFeB/PdPtMn spin-valve films at temperatures above 310 °C. Two kinds of CoFeB spin-valve film, Ta/NiFe/CoFeB/Cu/CoFeB/PdPtMn/Ta (B:0–3 at. %) and Ta/NiFe/CoFeB/Cu/CoFeB/FeMn/Ta (B:2 at. %), were prepared and annealed in a magnetic field. For the PdPtMn spin-valve samples, the magnetoresistance (MR) output decreased after annealing at a temperature above 330 °C and there was an increase in the interlayer coupling field of free and pin layers (Hin). There was no large change in the sheet resistance for annealing below 330 °C. For CoFe/PdPtMn(no B) spin valves, the MR output decreased during annealing at more than 310 °C and there was an increase of Hin. An addition of only 1 at. % of boron into the free and pinned layers is sufficient to obtain thermal stability. For the CoFeB/FeMn spin-valve samples, the MR output decreased for annealing above 280 °, the sheet resistance increased, and the Hin value did not change for annealing below 300 °C. The interface properties of PdPtMn spin valves were examined using high resolution scanning transmission electron microscopy with energy dispersive spectroscopy. We observed the connection between the free and the pinned layers through Cu pinholes and reduced Mn inter diffusion for the deteriorated sample. The increase of Hin can be explained by the pinholes of the Cu layer which result in a connection between the free and pinned layers. Boron in the free and pinned layer has the effect of blocking diffusion, thereby preventing a connection of the free and pinned layers. © 1999 American Institute of Physics.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    International orthopaedics 23 (1999), S. 145-147 
    ISSN: 1432-5195
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Résumé  Nous avons évalué les résultats de l’arthroplastie capsulaire selon Colonna dans le cas de 4 malades atteint de luxation congénitale de la hanche unilatérale. Toutes étaient de sexe féminin, agées de 10 à 14 ans à l’intervention chirurgicale et de 42 à 50 ans au délai d’observation. Le résultat le plus remarquable dans cette étude réside dans la bonne qualité de la marche. Bien que la radiologie montre la présence d’une forte dégénération coxale, les malades ne souffrent que de douleurs légères ou modérées de la hanche.
    Notes: Abstract  We evaluated the results of Colonna capsular arthroplasty in 4 patients with unilateral congenital dislocation of the hip. All of these patients were female, aged 10–14 years at the time of surgery, and 42–50 years at the time of follow-up. The most striking finding in this study was the good ability to walk. Although radiographs showed considerable joint degeneration, all of these patients had only mild to moderate pain in the hip.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Journal of materials science 17 (1998), S. 2105-2107 
    ISSN: 1573-4811
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Archives of orthopaedic and trauma surgery 119 (1999), S. 271-275 
    ISSN: 1434-3916
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract A spontaneous subcapital femoral neck fracture is an uncommon complication of a healed intertrochanteric hip fracture. To determine the etiology of this complication, 274 patients who had been treated for intertrochanteric hip fractures were followed up over an 8-year period from June 1988 to June 1996. We found 7 fractures of the subcapital femoral neck without a history of a trauma. The remaining 267 patients were defined as the control group. All seven patients with fractures of the subcapital femoral neck were women, and their average age at the time of compression hip screw (CHS) fixation was 83 years (range 74–92 years). The subcapital fractures occurred between 4 and 36 months after CHS fixation. The difference in the Singh index between the patient and control groups was statistically significant (P 〈 0.01). However, with regard to the position of the screw, spinal score, age, ambulatory ability, height, weight, and intertrochanteric fracture type (Jensen type), the differences between the patient and control groups were not statistically significant. Based on our findings, we conclude that a high grade of osteoporosis is the most important predisposing factor in the spontaneous development of a subcapital femoral neck fracture after a healed intertrochanteric hip fracture.
    Type of Medium: Electronic Resource
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  • 5
    ISSN: 1434-3916
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract We evaluated the results of rotational acetabular osteotomy (RAO) for the treatment of dysplastic hips with end-stage osteoarthrosis. Sixteen patients, aged 15–¶45 years at the time of surgery, were reviewed at a mean follow-up of 8 years (range 3–17 years). Remodeling of the hip joint occurred in half of the patients, with significant clinical improvement. A subsequent total hip arthroplasty, however, was done within 2 years after RAO in two other patients who had had large bone cysts in the femoral head and acetabulum. We suggest that RAO may be the procedure of choice for selected young patients, especially teenage patients, to postpone total hip arthroplasty.
    Type of Medium: Electronic Resource
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