Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 11 of 11 for “"encrustation"”.
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Bacteriuria as a Precursor of Intracatheter Encrustation
… changes were necessary. By determining when encrustation occurred, it was felt that some complications could be eliminated by changing catheters before obstruction occurred due to encrustation.</p> <p>It was the purpose of this study to: 1) explore some indications for catheter change, 2) …
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DYNAMIC SURFACES FOR URINARY CATHETERS: THE EFFECT OF POLY (GLYCEROL SEBACATE CITRATE) COMPOSITION ON DEGRADATION, ENCRUSTATION RESISTANCE AND BACTERIAL RESPONSE
Encrustation and blockage of urinary catheters, caused by the formation of crystalline biofilms, has been a problem since their invention more than 90 years ago. This thesis addresses the issue via a biomaterials approach, specifically, utilising poly glycerol sebacate citrate (PGSC) produced …
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Spatial variability in modern brachiopod assemblages: paleoecological and geochemical implications
… to kilometers. By contrast, biological encrustation of the brachiopod fauna of the Southeast Brazilian Bight shows strong sensitivity to microenvironmental conditions such as host identity, shape, and size, and may prove useful for studies of ancient planktonic productivity. Comparison …
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Anti-Adhesive Si-and F-Doped DLC Coatings and Micro-Nanostructured Surfaces for Medical Implants
… prediction. In addition the sterile urine encrustation experiments were also performed with the micro/nano-structured PDMS surfaces. The experimental showed that the micro-nano-structured surfaces significantly reduced or delay the urine encrustation formation on the surfaces.<br/>
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Stentless pyeloplasty for paediatric uretero-pelvic junction obstruction: a 15- year experience
… disadvantage of complications such as infection, encrustation, migration, breakage, and increased cost of surgery to remove the stent. Therefore, recently stentless pyeloplasty has been advocated as a feasible alternative. This study aimed to evaluate the outcome of stentless dismembered …
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Single sitting endourological management of retained ureteral stents at Groote Schuur Hospital: A 3-year retrospective study
… (n= 17). The most common side affected by stent encrustation was the right (55.56%). Conclusion: The endoscopic combined approached is safe and feasible technique that allows removal of retained and encrusted stents in a single procedure.
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Chemical composition and fiber structure as factors affecting fiber fermentation
… were fermented, we concluded that lignin encrustation was a factor inhibiting the fermentation of both CSH and OH. Lignin-carbohydrate/phenolic-carbohydrate complexes were factors inhibiting OH fermentation. The degree of polymerization of cellulose as a factor affecting fiber fermentation …
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Understanding the impacts of supersaturation and seed crystal loading on struvite precipitation kinetics and collection efficiency
… basic pH conditions. To get rid of unwanted encrustation due to struvite, crystallization techniques to recover struvite from such streams require extensive capital investments. Utilities are employing these side stream phosphorus recovery processes without a clear understanding of the …
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Pedogenic carbonates in loess formation rates, formation conditions and source apportionment assessed by isotopes and molecular proxies
… of carbonate concretions. Rhizoliths, formed by encrustation of roots with secondary CaCO3, yield high potential for paleoenvironmental studies. At the late Pleistocene loess-paleosol sequence of Nussloch, SW Germany, rhizolith CaCO3 was completely secondary and not contaminated by …
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PAK-Freisetzung aus tauchgeteerten Rohren unter Berücksichtigung verschiedener Wasserqualitäten
Der Einfluss des Biofilms, der Inkrustation, der Fließgeschwindigkeit und der Wasserqualität auf die Freisetzung von PAK wurde in Batch-, Drehkolbenreaktorversuchen und an einem Rohrleitungssystem untersucht. Chlorung von tauchgeteerten Edelstahlcoupons mit Biofilm führten zu einer fast …