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  • 1
    Digitale Medien
    Digitale Medien
    In Situ Reacted Rare-Earth Hexaaluminate Interphases (1997)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of the American Ceramic Society 80 (1997), S. 0 
    Details
    ISSN: 1551-2916
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Maschinenbau , Physik
    Notizen: A novel in situ reaction between a ceria-doped zirconia interphase coating on Saphikon fibers and an outer alumina coating has resulted in the formation of oriented hexaaluminate platelets which can act as a low fracture energy interface barrier for crack deflection in oxide—oxide ceramic-matrix composites (CMCs). The reaction proceeds only in reducing environments where the reduction of the cerium and zirconium ions to their 3+ valent state causes a destabilization phenomenon consistent with previously reported findings. The diffusion of the cerium from the zirconia into solid solution with the alumina can stabilize the layered hexaaluminate structure. Preferred orientational growth of the hexaaluminate parallel to the coating interface was observed which is the required orientation for enhanced debonding at the fiber/matrix interface in long-fiber-reinforced CMCs.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1151-2916.1997.tb03063.x
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  • 2
    Digitale Medien
    Digitale Medien
    Eder Puestow dilatation of benign rectal stricture following anterior resection (1990)
    Springer
    Diseases of the colon & rectum 33 (1990), S. 79-81 
    Details
    ISSN: 1530-0358
    Schlagwort(e): Rectal stricture ; Large-bowel obstruction ; Eder Puestow dilatation
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Abstract Benign anastomotic stricture following anterior resection can be difficult to manage when the stricture is proximal. The acceptable surgical options are either a redo low resection with its accompanying hazards or, alternatively, the formation of a permanent colostomy. Although dilatation of such strictures is possible by blind passage of metal bougies, the authors believe that this technique must be regarded as hazardous. A technique of dilatation is described that is usually reserved for esophageal stricture, namely, Eder Puestow dilatation over a guide wire inserted under direct vision. Although this technique may not be without risk, this readily available equipment may be valuable in making a further resection unnecessary.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF02053209
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  • 3
    Digitale Medien
    Digitale Medien
    Secretin enhances [14C]erythritol clearance in unanesthetized dogs (1982)
    Springer
    Digestive diseases and sciences 27 (1982), S. 57-64 
    Details
    ISSN: 1573-2568
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Abstract To determine the effect of secretin infusion on clearance of inert markers into bile, unanesthetized dogs fitted with Thomas cannulas received continuous infusions of [14C]erythritol and [3H]inulin throughout study. Taurocholic acid administered sequentially at 9.0, 20.0, and 40.0 μmol/min enhanced [14C]erythritol clearance, and GIH secretin (3 units/min) administered along with TCA (40.0μmol/min) increased [14C]erythritol clearance from 4.9±1.2 ml/10 min to 6.8±1.3 ml/10 min (P〈0.001), but simultaneously measured [3H]inulin clearance was unaltered. Secretin alone also increased [14C]erythritol clearance but did not alter [3H]inulin clearance. The increase in [14C]erythritol clearance per unit increase in bile flow was less during secretin infusion than TCA. Thus, secretin increases [14C]erythritol transport through restricted channels, probably distal to the canaliculi. [14C]Erythritol may not be an accurate marker for canalicular bile flow in dogs during secretin infusion.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01308122
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  • 4
    Digitale Medien
    Digitale Medien
    Microanalysis of polymers using a windowless energy-dispersive X-ray detector (1988)
    Bognor Regis [u.a.] : Wiley-Blackwell
    Journal of Polymer Science Part A: Polymer Chemistry 26 (1988), S. 201-206 
    Details
    ISSN: 0887-624X
    Schlagwort(e): Chemistry ; Polymer and Materials Science
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Chemie und Pharmazie
    Notizen: The surface compositions of various polymeric films, grown electrochemically on platinum foils, have been investigated by energy-dispersive x-ray analysis in conjunction with scanning electron microscopy (SEM/EDS). Comparison of the relative area ratios of peaks for the C and N Kemission lines show that the EDS may be used to study the surface composition of polymers. The evidence presented strongly suggests that there is limited structural degradation and the elemental composition is not changed under the electron beam at relatively low accelerating voltages. This technique statistically samples the repeat units of the polymer. For samples grown in both aqueous and nonaqueous solutions. SEM/EDS provides evidence for extensive contamination with oxygen.
    Zusätzliches Material: 2 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/pola.1988.080260120
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