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Articles 31 - 32 of 32
Full-Text Articles in Science and Technology Studies
Observations Of Decomposition Of Martensite During Heat Treatment Of Steels Using Atom Probe Tomography, Elena V. Pereloma, Simon Peter Ringer, Ilana B. Timokhina, Peter D. Hodgson
Observations Of Decomposition Of Martensite During Heat Treatment Of Steels Using Atom Probe Tomography, Elena V. Pereloma, Simon Peter Ringer, Ilana B. Timokhina, Peter D. Hodgson
Faculty of Engineering and Information Sciences - Papers: Part A
The decomposition of martensite during tempering or ageing is an important phenomenon as it leads to changes in the mechanical properties. These changes could take place during both steel manufacturing or in-service. Thus, their understanding is required to predict the material performance. Recent advances in the development of local electrode atom probes has led to a significant increase in the analysed volume of material (up to 100 millions of atoms) and at the same time reduced the acquisition times. This allows improvement in data statistics when investigating fine nanoscale features, such as solute segregation, clustering and ultrafine precipitation. Selected results …
Backcountry Water Treatment To Prevent Giardiasis, Jerry E. Ongerth, Ron L. Johnson, Steven C. Macdonald, Floyd Frost, Henry H. Stibbs
Backcountry Water Treatment To Prevent Giardiasis, Jerry E. Ongerth, Ron L. Johnson, Steven C. Macdonald, Floyd Frost, Henry H. Stibbs
Faculty of Engineering and Information Sciences - Papers: Part A
This study was conducted to provide current information on the effectiveness of water treatment chemicals and filters for control of Giardia cysts in areas where treated water is not available. Four filters and seven chemical treatments were evaluated for both clear and turbid water at 10°C. Three contact disinfection devices were also tested for cyst inactivation. Filters were tested with 1-liter volumes of water seeded with 3 x 104 cysts of G. lamblia produced in gerbils inoculated with in vitro cultured trophozoites; the entire volume of filtrate was examined for cyst passage. Chemical treatments were evaluated at concentrations specified by …