نتایج جستجو برای: encrustation
تعداد نتایج: 233 فیلتر نتایج به سال:
An experimental investigation was conducted on two lengths of Roman lead water pipe excavated near Corbridge, Northumberland, England. The pipes date from approximately AD 80. One length contained a sleeve joint. were linked to pump system using 3 D-printed connectors, and the hydraulic head loss along measured. without joint used determine value for wall roughness height, fitting results Darcy...
<p>Installation of a DJ Stent is procedure performed in the field urology to prevent or relieve ureteral obstruction.Technological developments medicine have changed approach surgical intervention cases kidney stones (especially with stone burden &gt; 2 cm), from open surgery endoscopic surgery, one them by percutaneous nephrolithotomy (PCNL). We report case man right double J (DJ) st...
Understanding the mechanisms of anaerobic microbial iron cycling is necessary for a full appreciation of presentday biogeochemical cycling of iron and carbon and for drawing conclusions about these cycles on the ancient Earth. Towards that end, we isolated and characterized an anaerobic nitrate-dependent Fe(II)-oxidizing bacterium from a freshwater sediment. The 16SrRNA gene sequence of the iso...
Proteus mirabilis forms dense crystalline biofilms on catheter surfaces that occlude urine flow, leading to serious clinical complications in long-term catheterized patients, but there are presently no truly effective approaches to control catheter blockage by this organism. This study evaluated the potential for bacteriophage therapy to control P. mirabilis infection and prevent catheter block...
Accurate evaluation of stent encrustation patterns, such as volume distribution, from different patient groups are valuable for clinical management and the development better stents. This study quantitatively compares patterns stone kidney transplant patients. Twenty-seven double-J ureteral stents were collected patients with disease or who underwent transplantation. Encrustations on samples qu...
Abstract Two types of materials were sampled as part an investigation the relics Holy Catholic Church Apostles St Philip and James in Basilica dei Santi Apostoli Rome: bone- mummy-materials architectural samples. The analyses encompassed radiocarbon dating, thermoluminescence gas liquid chromatographic separation with mass spectrometric detection, X-Ray fluorescence, diffraction, inductively co...
Hardgrounds represent synsedimentary cemented stratigraphic beds that form at or near the seafloor. Borings a key line of evidence for investigations hardground development and record evolution bioerosion boring organisms. The unequivocal identification borings is done through crosscutting relationship between proposed hard substrate, such as lithoclasts and/or shells, with morphological criter...
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