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Full-Text Articles in Science and Technology Studies
Advanced Rolling Technologies For Producing Ultra-Finegrain/Nanostructured Alloys, Hailiang Yu, A Kiet Tieu, Cheng Lu
Advanced Rolling Technologies For Producing Ultra-Finegrain/Nanostructured Alloys, Hailiang Yu, A Kiet Tieu, Cheng Lu
Faculty of Engineering and Information Sciences - Papers: Part A
Ultrafine-grained materials show high strength at ambient temperature, high-speed superplastic deformation at elevated temperatures, and high corrosion resistance. Such materials have attracted increasing attention in the past twenty years. A number of severe plastic deformation techniques, such as equal-channel angular press, high pressure torsion, groove pressing, twist extrusion, asymmetric rolling, and accumulative roll bonding have been used to develop ultrafine-grained bulk materials. The equal-channel angular press, high pressure torsion, twist extrusion and groove pressing techniques suffer from some drawbacks: firstly, forming machines with large load capacities and expensive dies are indispensable for these processes; secondly, the productivity is relatively very …
Butyrate-Producing Clostridium Cluster Xiva Species Specifically Colonize Mucins In An In Vitro Gut Model, Pieter Van Den Abbeele, Clara Belzer, Margot Goossens, Michiel Kleerebezem, William M. De Vos, Olivier Thas, Rosemarie De Weirdt, Frederiek-Maarten Kerckhof, Tom Van De Wiele
Butyrate-Producing Clostridium Cluster Xiva Species Specifically Colonize Mucins In An In Vitro Gut Model, Pieter Van Den Abbeele, Clara Belzer, Margot Goossens, Michiel Kleerebezem, William M. De Vos, Olivier Thas, Rosemarie De Weirdt, Frederiek-Maarten Kerckhof, Tom Van De Wiele
Faculty of Engineering and Information Sciences - Papers: Part A
The human gut is colonized by a complex microbiota with multiple benefits. Although the surface-attached, mucosal microbiota has a unique composition and potential to influence human health, it remains difficult to study in vivo. Therefore, we performed an in-depth microbial characterization (human intestinal tract chip (HITChip)) of a recently developed dynamic in vitro gut model, which simulates both luminal and mucosal gut microbes (mucosal-simulator of human intestinal microbial ecosystem (M-SHIME)). Inter-individual differences among human subjects were confirmed and microbial patterns unique for each individual were preserved in vitro. Furthermore, in correspondence with in vivo studies, Bacteroidetes and Proteobacteria were enriched …
Process Design Strategies For Producing Heavy Section Steel With Improved Quality, Jingwei Zhao, Zhengyi Jiang, Dongbin Wei, Chong Soo Lee
Process Design Strategies For Producing Heavy Section Steel With Improved Quality, Jingwei Zhao, Zhengyi Jiang, Dongbin Wei, Chong Soo Lee
Faculty of Engineering and Information Sciences - Papers: Part A
Uniformity of microstructure and mechanical properties is required for the heavy section steel. In the present work, a heavy section wind tower flange was manufactured by controlled ring-rolling. Post-rolling heat treatment was employed to optimize the microstructure and mechanical properties. The chemical composition, microstructure and mechanical properties in different zones of the flange were investigated. The results showed that the chemical composition and microstructure were uniformly distributed in the flange. The tensile strength showed similar values in different sampling locations. The strain and impact energies of specimens prepared along the longitudinal direction were higher than that prepared along both the …
Occurrence Of Shiga-Like Toxin-Producing Escherichia Coli In Retail Fresh Seafood, Beef, Lamb, Pork, And Poultry From Grocery Stores In Seattle, Washington, Mansour Samadpour, Jerry Ongerth, J. Liston, Nhiem Tran, Dong Nguyen, Thomas S. Whittam, Richard Wilson, Phillip I. Tarr
Occurrence Of Shiga-Like Toxin-Producing Escherichia Coli In Retail Fresh Seafood, Beef, Lamb, Pork, And Poultry From Grocery Stores In Seattle, Washington, Mansour Samadpour, Jerry Ongerth, J. Liston, Nhiem Tran, Dong Nguyen, Thomas S. Whittam, Richard Wilson, Phillip I. Tarr
Faculty of Engineering and Information Sciences - Papers: Part A
Fresh meat, poultry, and seafood purchased from Seattle area grocery stores were investigated for the presence of Shiga-like toxin-producing Escherichia coli by using DNA probes for Shiga-like toxin (SLT) genes I and II. Of the 294 food samples tested, 17% had colonies with sequence homology to SLT I and/or SLT II genes.
Evaluation Of Dna Probes For Detection Of Shiga-Like-Toxin- Producing Escherichia Coli In Food And Calf Fecal Samples, Mansour Samadpour, John Liston, Jerry E. Ongerth, Phillip I. Tarr
Evaluation Of Dna Probes For Detection Of Shiga-Like-Toxin- Producing Escherichia Coli In Food And Calf Fecal Samples, Mansour Samadpour, John Liston, Jerry E. Ongerth, Phillip I. Tarr
Faculty of Engineering and Information Sciences - Papers: Part A
The use of DNA probes for Shiga-like toxin I (SLT-I) and SLT-II for detection of SLT-producing Escherichia coli (SLTEC) in foods and calf fecal samples was evaluated. Enrichment cultures were prepared from food or fecal samples. Colonies formed by plating of enrichment cultures were probed for SLTEC by colony hybridization. Alternatively, enrichment cultures were analyzed for SLTEC presence by dot blot. The lowest detected concentration of SLTEC in sample homogenates inoculated with E. coli 0157:H7 corresponded to 1.3 CFU/g of sample. Of the 44 food samples and 28 fecal samples from dairy calves tested by the colony hybridization method, 4 …