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TL;DR: In this paper, an extensive experimental program of heat transfer measurements has been completed recently at the University of Ottawa's supercritical pressure test facility (SCUOL). Thermal-hydraulics tests were performed for vertical upflow of carbon dioxide in directly heated tubes with inner diameters of 8 and 22mm, at high subcritical, near-critical and supercritical pressures.
65 citations
TL;DR: In this article, the instability of plastic flow is analyzed in terms of the development of internal bifurcations (analogous to diffuse, multiple, external necks for non-cavitating superplastic alloys) and the linking of cavities by internal necking.
65 citations
TL;DR: In this paper, two noncentrosymmetric borates oxides, M Bi 2 B 2 O 7 (M Ca, Sr), have been synthesized by solid-state reactions in air at temperatures in the 600-700°C range.
64 citations
10 Nov 2006-Materials Science and Engineering A-structural Materials Properties Microstructure and Processing
TL;DR: In this article, the authors examined both the L3 diffractometer at the NRU reactor, Chalk River, Canada and the TASS strain scanner at ANSTO's HIFAR reactor, Lucas Heights, Australia.
Abstract: Low pressure turbine blades in power stations suffer from leading edge erosion damage due to water impingement. In an effort to extend the life of these blades, repair of the eroded regions has been proposed using laser cladding with Stellite material. However, the addition of Stellite results in residual stresses being generated in the parent metal due to contraction during cooling and differences in thermal expansion between the two materials. In this work test coupons and laser clad blades were examined for residual stresses using both the L3 diffractometer at the NRU reactor, Chalk River, Canada and the TASS strain scanner at ANSTO's HIFAR reactor, Lucas Heights, Australia. In addition XRD results were used to measure residual stresses on the surface of the blade to complement the neutron measurements. An FEA model of a simplified weld was used to explain some of the results.
64 citations
TL;DR: In this article, electron density maps (EDMs) of the ripple phase formed by phosphorylcholine lipids such as dimyristoyl phosphatidylcholine (DMPC), palmitoyl-oleoyl (POPC), dihexadecyl (DDE), and dilauroyl (DLPC) were presented.
Abstract: We present electron density maps (EDMs) of the ripple phase formed by phosphorylcholine lipids such as dimyristoyl phosphatidylcholine (DMPC), palmitoyl-oleoyl phosphatidylcholine (POPC), dihexadecyl phosphatidylcholine, and dilauroyl phosphatidylcholine (DLPC) With the exception of DLPC, the rippled bilayers have a sawtooth shape in all the systems, with one arm being almost twice as long as the other For DMPC and POPC bilayers, EDMs have been obtained at different temperatures at a fixed relative humidity, and the overall shape of the ripples and the ratio of the lengths of the two arms are found to be insensitive to temperature EDMs of all the systems with saturated hydrocarbon chains suggest the existence of a mean chain tilt along the ripple wave vector In the literature it is generally assumed that the asymmetry of the rippled bilayers (absence of a mirror plane normal to the ripple wave vector) arises from a sawtoothlike height profile However, in the case of DLPC, the height profile is found to be almost symmetric and the asymmetry results mainly from different bilayer thicknesses in the two arms of the ripple We also present EDMs of the metastable ripple phase of dipalmitoyl phosphatidylcholine, formed on cooling from the L(alpha) phase
64 citations
Authors
Showing all 2298 results
| Name | H-index | Papers | Citations |
|---|---|---|---|
| Michael D. Guiver | 78 | 288 | 20540 |
| Robert J. Birgeneau | 78 | 587 | 22686 |
| Mike D. Flannigan | 71 | 211 | 21327 |
| Martin T. Dove | 61 | 396 | 14767 |
| Luis Rodrigo | 58 | 341 | 12963 |
| André Longtin | 56 | 260 | 16372 |
| David Mitlin | 56 | 196 | 15479 |
| John Katsaras | 55 | 220 | 9263 |
| John E. Greedan | 55 | 391 | 12171 |
| Gang Li | 48 | 406 | 7713 |
| Matthew G. Tucker | 45 | 224 | 7288 |
| Bruce D. Gaulin | 45 | 284 | 6698 |
| Erick J. Dufourc | 43 | 144 | 5882 |
| Norbert Kučerka | 43 | 119 | 7319 |
| Stephen J. Skinner | 42 | 194 | 8522 |