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TL;DR: In this article, the molecular in-plane and out-of-plane structure of DMPC membranes containing up to 60 mol% of cholesterol was studied using X-ray diffraction.
Abstract: The molecular in-plane and out-of-plane structure of dimyristoylphosphatidylcholine (DMPC) membranes containing up to 60 mol% of cholesterol was studied using X-ray diffraction. Up to 37.5 mol% cholesterol could be dissolved in the membranes, resulting in a disordered lateral membrane structure. Highly ordered cholesterol structures were observed at cholesterol concentrations of more than 40 mol% cholesterol. These structures were characterized as immiscible cholesterol plaques, i.e., bilayers of cholesterol molecules coexisting with the lipid bilayer. The cholesterol molecules were found to form a monoclinic structure at 40 mol% cholesterol, which transformed into a triclinic arrangement at the highest concentration of 60 mol%. Monoclinic and triclinic structures were found to coexist at cholesterol concentrations between 50 and 55 mol%.
52 citations
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TL;DR: Cross sections for the scattering from mica of hypothetical weakly interacting dark-matter particles such as neutralinos will allow the interpretation of ongoing experiments that look for tracks due to the interaction of dark- Matter particles with nuclei in ancient mica.
Abstract: We calculate spin-dependent cross sections for the scattering from mica of hypothetical weakly interacting dark-matter particles such as neutralinos. The most abundant odd-A isotopes in mica, $^{27}\mathrm{Al}$ and $^{39}\mathrm{K}$, require different shell-model treatments. The calculated cross sections will allow the interpretation of ongoing experiments that look for tracks due to the interaction of dark-matter particles with nuclei in ancient mica.
52 citations
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52 citations
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TL;DR: In this article, the authors used diffractometry to characterise the evolution of intergranular lattice strains during the tensile loading of the near-α titanium alloy Ti-834.
52 citations
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TL;DR: In this article, the precipitate evolution in a polycrystalline Ni-based superalloy during aging to 1000 hours has been studied via transmission electron microscopy, atom probe tomography, and neutron diffraction.
Abstract: The microstructural stability of nickel-based superalloys is critical for maintaining alloy performance during service in gas turbine engines. In this study, the precipitate evolution in a model polycrystalline Ni-based superalloy during aging to 1000 hours has been studied via transmission electron microscopy, atom probe tomography, and neutron diffraction. Variations in phase composition and precipitate morphology, size, and volume fraction were observed during aging, while the constrained lattice misfit remained constant at approximately zero. The experimental composition of the γ matrix phase was consistent with thermodynamic equilibrium predictions, while significant differences were identified between the experimental and predicted results from the γ′ phase. These results have implications for the evolution of mechanical properties in service and their prediction using modeling methods.
52 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 |