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  • 1
    Electronic Resource
    Electronic Resource
    Laparoscopic removal of pheochromocytoma (1995)
    Springer
    Surgical endoscopy and other interventional techniques 9 (1995), S. 431-436 
    Details
    ISSN: 1432-2218
    Keywords: Pheochromocytoma ; Laparoscopy ; Adrenalectomy ; Calcium-channel blocker
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Until now, the need for wide exposure and nonmanipulative dissection of pheochromocytoma has dictated the use of a large intraperitoneal transabdominal approach, which unfortunately results in a significant incidence of morbidity. A unilateral retroperitoneal approach guided by the refinements of new imaging techniques is less invasive but is associated with a small risk of incomplete cure. In one case report, we tested the hypothesis that laparoscopic surgery could combine the beneficial effects of both operative strategies without their respective side effects. We concluded that a laparoscopic approach combined with exclusive intraoperative infusion of nicardipine, a calcium-channel blocker, can be used to surgically remove pheochromocytoma under stable hemodynamic conditions. This provides better exposure of the anatomical structures than open surgery and allows a visual exploration of the entire abdominal cavity to exclude tumor multicentricity or ectopic sites in the case of inconclusive preoperative imaging investigations. Moreover, conversion to open surgery is always possible if needed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00187168
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    COSP: A computer model of cyclic oxidation (1991)
    Springer
    Oxidation of metals 36 (1991), S. 81-112 
    Details
    ISSN: 1573-4889
    Keywords: cyclic oxidation ; model ; high temperature ; alloys ; coatings
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract A computer model useful in predicting the cyclic oxidation behavior of alloys is presented. The model considers the oxygen uptake due to scale formation during the heating cycle and the loss of oxide due to spalling during the cooling cycle. The balance between scale formation and scale loss is modeled and used to predict weight change and metal loss kinetics. A simple uniform spalling model is compared to a more complex random spall site model. In nearly all cases, the simpler uniform spall model gave predictions as accurate as the more complex model. The model has been applied to several nickel-base alloys which, depending upon composition, form Al2O3 or Cr2O3 during oxidation. The model has been validated by several experimental approaches. Versions of the model that run on a personal computer are available.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00938457
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
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