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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Applied physics 54 (1992), S. 204-207 
    ISSN: 1432-0630
    Keywords: 73.60 ; 78.70 ; 68.55
    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 optical spectral response between 340–860 nm and electrical conductivity measurements were made on thermally evaporated gold films in the thickness range 50–130 Å in order to identify optimal properties for their use as the top layer of MIS solar cells. Films of lower evaporation rate and thickness range 70–100 Å were found to have high transmittance and low reflectance, which is desirable for the above purpose. Films thinner than 70 Å had poor electrical conductivity and thicker than 100 Å had poor solar transmittance, hence were rejected. Improved transmittance and conductivity were obtained upon annealing the film at 250°C for about two hours.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Diseases of the colon & rectum 42 (1999), S. 1272-1275 
    ISSN: 1530-0358
    Keywords: Rectal cancer ; Coloanal anastomosis ; Survival ; Recurrence
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract PURPOSE: Jeopardizing cure and risking high local recurrence have served as arguments against sphincter-saving resection for patients with distal third rectal cancer. This prospective study examines and compares the local recurrence and survival rates in patients with distal third rectal cancer treated by either coloanal anastomosis or abdominoperineal resection. METHODS: Between 1977 and 1993, 174 patients underwent coloanal anastomoses and 38 patients underwent abdominoperineal resection. All tumors were located 4 to 7 cm from the anal verge. One hundred ninety-three patients (91 percent) underwent rectal excision with a curative intent. Mean follow-up was 66 months after sphincter-saving resection and 65 months after abdominoperineal resection. RESULTS: Mean anastomotic height from the anal verge was 2.3 cm after sphincter-saving resection. Overall local recurrence rate was 7.9 percent after sphincter-saving resection and 12.9 percent after abdominoperineal resection. The five-year actuarial survival rate was 78 percent after sphincter-saving resection and 74 percent after abdominoperineal resection. CONCLUSION: Local recurrence and survival are not compromised in patients with distal third rectal cancer when treated by sphincter-saving resection, provided that oncologic principles are not violated. Coloanal anastomosis can be performed with an acceptable morbidity.
    Type of Medium: Electronic Resource
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