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  • 1985-1989  (4)
  • 1970-1974
  • 1905-1909
  • 1900-1904
  • 81.40E  (2)
  • Proximal gastric vagotomy  (2)
  • 1
    Electronic Resource
    Electronic Resource
    Rapid thermal annealing of electrically-active defects in virgin and implanted silicon (1987)
    Springer
    Applied physics 42 (1987), S. 227-232 
    Details
    ISSN: 1432-0630
    Keywords: 81.40E ; 61.80B ; 61.70T ; 71.55
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract We have investigated the annealing behaviour of electrically-active defects induced in virgin n-type and residual in As+ implanted p-type silicon after laser irradiation, using the rapid thermal annealing technique (RTA). Spectra from deep level transient spectroscopy (DLTS) show that three majority carrier traps at E (0.32 eV), E (0.45 eV) and E (0.53 eV) were induced in the n-type Si after Nd-Yag laser treatment at 1.6 J cm−2. Annealing in a rapid thermal furnace at 600 °C for times between 5 and 60 s resulted in a linear decrease of the concentration of these defects and for times ≧ 60 s, they are no longer detectable. A similar result was obtained in the case of the multiple energy As+ implanted samples in which two majority carrier traps at H (0.30 eV), H (0.58 eV) and a minority carrier trap E (0.53 eV) completely disappeared after annealing for 45 s at 600 °C, in spite of the very high concentration of the H (0.58 eV) defect (〉1015 cm−3 up to a depth of about 1.5 μm). A comparison of the annealing rates of the E (0.32 eV) trap using the RTA and the conventional thermal annealing (CTA) techniques at 600 °C showed that the former is at least 30 times faster than the latter. Sheet resistance measurements show that the level of dopant deactivation, due to post-laser thermal treatment at 500 °C (in order to obtain the same reduction in residual defect concentration), is less in the RTA processed samples than in those annealed using conventional methods. These results lend strong support to the hypothesis of ionization-induced enhancement of defect annealing, and to our knowledge, represent the first report of the observation of the phenomenon using the RTA technique.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00620605
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Thermal annealing effects on grain boundary recombination activity in silicon (1989)
    Springer
    Applied physics 49 (1989), S. 233-237 
    Details
    ISSN: 1432-0630
    Keywords: 61.16D ; 61.70N ; 81.40E ; 61.50
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract We have studied the influence of conventional and rapid thermal treatments at 850°C for 30 min and 10 s, respectively, on the recombination activity of theε9,ε13 (P-type) andε25 (N-type) grain boundaries in silicon. The analyses were made by scanning electron microscopy (SEM) working in the electron beam induced current mode (EBIC) and completed by minority carrier diffusion length measurements. The main result obtained from this study shows the importance of the rapid thermal process as a suitable thermal treatment for polycrystalline materials.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00616849
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    312.10-Jahres-Langzeitergebnisse der Säuresekretion nach proximal-selektiver Vagotomie (1985)
    Springer
    Langenbeck's archives of surgery 366 (1985), S. 712-712 
    Details
    ISSN: 1435-2451
    Keywords: Gastric acid secretion ; Proximal gastric vagotomy ; Long-term stability ; Säuresekretion ; Proximal-selektive Vagotomie ; Langzeitstabilität
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Bei 11 Patienten mit Ulcus duodeni (UD) and 5 Patienten mit einem Ulcus des Pyloruskanals (UPK) wurden vor, 1, 5 and 10 Jahre nach proximal-selektiver Vagotomie (PSV) Sekretionsbestimmungen (basale Sekretion, BAO, and Pentagastrin-stimulierte Sekretion, PAO) durchgeführt. Dabei zeigte sich sowohl bei den UD wie den UPK eine signifikante Verminderung der Sekretion nach 1 Jahr um 66% bzw. 58% fur den BAO and von 48% bzw. 62% fur den PAO. Die Säurere-duktion betrug auch nach 10 Jahren noch fiber 50% (BAO and PAO) and es zeigten sich keine signifikanten Unterschiede zwischen UD and UPK noch zwischen Rezidivfreien and Rezidiven. Die PSV führt damit zu einer erheblichen and fiber mindestens 10 Jahre stabilen Verminderung des Säureaus-stoßes des Magens.
    Notes: Summary Eleven patients with duodenal ulcers (DU) and 5 with pyloric channel ulcers (PCU) had serial acid secretion studies before as well as 1, 5 and 10 years after proximal gastric vagotomy (PGV). One year after PGV, the basal acid output (BAO) and pentagastrin-stimulated output (PAO) were reduced by 66% and 48%, respectively, in DU and 58% and 62%, respectively, in PCU. Acid output reduction was still higher than 50% for both BAO and PAO after 10 years. There appeared to be no significant differences between DU and PCU or between recurrence-free patients and those with recurrent ulcers. Thus PGV achieves a substantial reduction in acid output, which remains stable for at least 10 years.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01836910
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    319. Die proximal selektive Vagotomie beim gastroduodenalen Ulcus -10-Jahres-Ergebnisse der europäischen multizentrischen Studie (1987)
    Springer
    Langenbeck's archives of surgery 372 (1987), S. 935-935 
    Details
    ISSN: 1435-2451
    Keywords: Proximal gastric vagotomy ; Gastroduodenal ulcer ; Ten-year results ; Proximal selektive Vagotomie ; Gastroduodenales Ulcus ; 10-Jahres-Ergebnisse
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Wir berichten über die 10-Jahres-Ergebnisse einer prospektiven multizentrischen Studie an 8 europäischen Kliniken (Basel, Bern, Düsseldorf, Erlangen, Freiburg, Krefeld, München Klinikum Grosshadern, Strassburg) zur Bewertung der proximal selektiven Vagotomie beim gastroduodenalen Ulcus. Die Nachuntersuchungsrate war 81%. Ergebnis:n symptomatisch total Visick Ulcustyp % Rezidivrate % 1 + II Ulcus duodeni524 13,6 20,4 88% Ulcus ventriculi 71 13,5 19,8 73% Ulcus pyloricum/praepyloricum 94 18,7 31,684% Kombinierte Ulcera 28 27,9 31,7 82%
    Notes: Summary We report the 10-year results of a prospective multicenter trial in eight European centers (Basel, Bern, Düsseldorf, Erlangen, Freiburg, Krefeld, München Klinikum Grosshadern, Strassburg) evaluating proximal gastric vagotomy for gastroduodenal ulcers. The follow-up rate was 81%. Results:n Symptomatic Total Visick Ulcer type recurrencerecurrence I + II (%) (%) Duodenal ulcer 524 13.6 20.488% Gastric ulcer 71 13.5 19.8 73% Pyloric/prepyloric ulcer 94 18.7 31.6 84% Combined ulcer 28 27.9 31.782%
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01298104
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    Paper (German National Licenses)
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