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  • 1995-1999  (2)
  • 1999  (2)
  • Cervical spine  (1)
  • thermodynamic properties  (1)
  • 1
    Electronic Resource
    Electronic Resource
    A clinico-pathological study of cervical myelopathy in rheumatoid arthritis: post-mortem analysis of two cases (1999)
    Springer
    European spine journal 8 (1999), S. 46-53 
    Details
    ISSN: 1432-0932
    Keywords: Key words Rheumatoid arthritis ; Cervical spine ; Subluxation ; Myelopathy ; Necropsy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Two patients who developed cervical myelopathy secondary to rheumatoid arthritis were analyzed post mortem. One patient had anterior atlanto-axial subluxation (AAS) combined with subaxial subluxation (SS), and the other had vertical subluxation (VS) combined with SS. In the patient with AAS, the posterior aspect of the spinal cord demonstrated severe constriction at the C2 segment, which arose from dynamic osseous compression by the C1 posterior arch. A histological cross-section of the spinal cord at the segment was characterized by distinct necrosis in the posterior white columns and the gray matter. In the patient with VS, the upper cervical cord and medulla oblongata showed angulation over the invaginated odontoid process, whereas no significant pathological changes were observed. At the level of SS, the spinal cord was pinched and compressed between the upper corner of the vertebral body and the lower edge of the lamina. Histologically, demyelination and gliosis were observed in the posterior and lateral white columns.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s005860050126
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Thermodynamic Properties for R-404A (1999)
    Springer
    International journal of thermophysics 20 (1999), S. 129-140 
    Details
    ISSN: 1572-9567
    Keywords: correlation ; equation of state ; R-125 ; R-134a ; R-143a ; R-404A ; thermodynamic properties
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract An 18-coefficient modified Benedict–Webb–Rubin equation of state has been developed for R-404A, a ternary mixture of 44% by mass of pentafluoroethane (R-125), 52% by mass of 1,1,1-trifluoroethane (R-143a), and 4% by mass of 1,1,1,2-tetrafluoroethane (R-134a). Correlations of bubble point pressures, dew point pressures, saturated liquid densities, and saturated vapor densities are also presented. This equation of state has been developed based on the reported experimental data of PVT properties, saturation properties, and isochoric heat capacities by using least-squares fitting. These correlations are valid in the temperature range from 250 K to the critical temperature. This equation of state is valid at pressures up to 19 MPa, densities to 1300 kg·m−3, and temperatures from 250 to 400 K. The thermodynamic properties except for the saturation pressures are calculated from this equation of state.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1021434415173
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
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