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  • Electronic Resource  (2)
  • 66.30.JT  (1)
  • Anaesthetics  (1)
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  • Electronic Resource  (2)
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  • 1
    Electronic Resource
    Electronic Resource
    Diffusion of Hf in α-Zr (1990)
    Springer
    Applied physics 51 (1990), S. 29-33 
    Details
    ISSN: 1432-0630
    Keywords: 66.10.CB ; 66.30.h ; 66.30.JT
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract The diffusion of Hf in α-Zr has been studied in the temperature range 773–1115 K for the first time using the Rutherford backscattering technique. For this purpose we have used 250 Å thick Hf films, which were deposited on two types of Zr samples. Our results show that in both cases, the diffusion coefficients follow curved Arrhenius plots. For the pure Zr material the diffusion coefficients are systematically lower than for Zr samples of lower purity. These results indicate that the Hf diffusion mechanism is at least partially of extrinsic character. Finally it should be mentioned that the present data lie significatively below the values of self-diffusion in α-Zr.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00324462
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Work in operating rooms and pregnancy outcome among nurses (1994)
    Springer
    International archives of occupational and environmental health 66 (1994), S. 235-241 
    Details
    ISSN: 1432-1246
    Keywords: Work in operating rooms ; Anaesthetics ; Spontaneous abortion ; Birth defects ; Nurses
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract The aim of this study was to analyse the relationship between work in an operating room and pregnancy outcome, as described by the rates of spontaneous abortion and of birth defects. The population comprised the female nurses of 17 hospitals in Paris, interviewed in 1987–1989. An exposed group included all operating room nurses, and a control group was composed of female nurses in other departments matched by hospital, age and duration of service. Each woman described all prior pregnancies. In total, 776 pregnancies were described by 418 nurses who were first pregnant in 1970 or thereafter; ectopic pregnancies, those terminated by voluntary induced abortion and those leading to multiple births were excluded. The rate of spontaneous abortion was significantly higher for pregnancies during which women worked in an operating room than for the other pregnancies. Birth defects were not significantly related to work in an operating room during pregnancy. These results are in agreement with others showing a significant relationship between occupational exposure to operating rooms and spontaneous abortion, although identification of the responsible factor remains difficult. They suggest that effective ventilating systems should be installed in all operating rooms and that special preventive measures must be taken for women of childbearing age.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00454361
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    Paper (German National Licenses)
    Fulltext
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