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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Langenbeck's archives of surgery 347 (1978), S. 661-661 
    ISSN: 1435-2451
    Keywords: Celostomy ; Anastomosis, colonic ; Zökalfistel ; Colonanastomose
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Wir haben seit 1974 bei 64 Patienten nach Kolonresektionen eine selbstheilende Zökalfistel zur Entlastung der Anastomose in einer modifizierten Methode nach Stainbeck angelegt. Aufgrund anfänglicher Komplikationen haben wir die Anlage einer Zökalfistel anstelle eines doppelläufigen Anus praeter von folgenden Faktoren abhängig gemacht: Präoperative Vorbereitung, kein Ileus, keine Peritonitis, keine komplizierten Faktoren wie Diabetes etc. und Alter unter 65 Jahren. Unter dieser Voraussetzung traten von seiten der Zökalfistel und von seiten der Colonanastomose keine Komplikationen mehr auf.
    Notes: Summary Since 1974 64 patients with resection of the left colon were treated with a so-called self-healing cecostomy using a rubber tube (modification of Stainbeck's method), to protect the colonic anastomosis. This operation, rather than a double-barreled colostomy, was performed under the following conditions: Preoperative bowel preparation, absence of obstruction and inflammatory diseases, absence of diabetes, arteriosclerosis, and other complicating factors. When this regime was followed, no complication was observed at the sites of celostomy and the colonic anastomosis.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1572-9540
    Keywords: proton ; proton radius ; muon ; muonic hydrogen ; Lamb shift
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The contribution of the root mean square (RMS) proton charge radius to the Lamb shift (2S–2P energy difference) in muonic hydrogen (μp) amounts to 2%. Apart from the uncertainty on this charge radius, theory predicts the Lamb shift with a precision on the ppm level. We are going to measure ΔE (2 S1/2(F=1)–2 P3/2(F=2)) in a laser resonance experiment to a precision of 30 ppm (i.e., 10% of the natural linewidth) and to deduce the RMS proton charge radius with 10−3 relative accuracy, 20 times more precise than presently known. The most important requirement for the feasibility of such an experiment, namely the availability of a sufficient amount of long lived metastable μp atoms in the 2S state, has been investigated in a recent experiment at PSI. Our analysis shows that in the order of one percent of all muons stopped in low pressure hydrogen gas form a long lived μp(2S) with a lifetime of the order of 1 μs. The technical realization of our experiment involves a new high intensity low energy muon beam, an efficient low energy muon entrance detector, a randomly triggered 3 stage laser system providing the 0.5 mJ, 7 ns laser pulses at 6.02 μm wavelength, and a combination of a xenon gas proportional scintillation chamber (GPSC) and a microstrip gas chamber (MSGC) with a CsI coated surface to detect the 2 keV X rays from theμp(2P → 1S) transition.
    Type of Medium: Electronic Resource
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