Ab initio simulations of α- and β-ammonium carbamate (NH4·NH2CO2), and the thermal expansivity of deuterated α-ammonium carbamate from 4.2 to 180 K by neutron powder diffraction

Autor: Christopher M. Howard, Ian G. Wood, Kevin S. Knight, A. Dominic Fortes

Publikováno v: Acta Crystallographica Section B Structural Science, Crystal Engineering and Materials. 78:459-475

Experimental and computational studies of ammonium carbamate have been carried out, with the objective of studying the elastic anisotropy of the framework manifested in (i) the thermal expansion and (ii) the compressibility; furthermore, the relative

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::61def240040f7d9842a4b2984cd9df7e
https://doi.org/10.1107/s2052520622002645

Anisotropic diffusion creep in postperovskite provides a new model for deformation at the core-mantle boundary

Autor: Edward Bailey, Ian G. Wood, Simon A. Hunt, Lidunka Vočadlo, David P. Dobson, John Wheeler, Alex Lindsay-Scott, John P. Brodholt

Publikováno v: Dobson, D P, Lindsay-Scott, A, Hunt, S, Bailey, E, Wood, I, Brodholt, J, Vocadlo, L & Wheeler, J 2019, ' Anisotropic diffusion creep in postperovskite provides a new model for deformation at the core-mantle boundary ', Proceedings of the National Academy of Sciences of the United States of America, vol. 116, no. 52, pp. 26389-26393 . https://doi.org/10.1073/pnas.1914826116
Proc Natl Acad Sci U S A

The lowermost portion of Earth’s mantle (D″) above the core−mantle boundary shows anomalous seismic features, such as strong seismic anisotropy, related to the properties of the main mineral MgSiO(3) postperovskite. But, after over a decade of

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8315ad44b598641bba4e4fdf2744cd0e
https://discovery.ucl.ac.uk/id/eprint/10086846/

Element speciation in UK biomass power plant residues based on composition, mineralogy, microstructure and leaching

Autor: Richard J. Williams, Julia A. Stegemann, Ian G. Wood, Anna Bogush

Publikováno v: Fuel. 211:712-725

Biomass ash management is an escalating issue in many countries because of increasing numbers of biomass power plants. Comprehensive characterization of biomass ashes with emphasis on element speciation, and solubility of nutrients (e.g., K and P) an

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::125c2e65640cfdc24cddfa1dd64793e9
https://doi.org/10.1016/j.fuel.2017.09.103

High-resolution neutron-diffraction measurements to 8 kbar

Autor: C. M. Goodway, Ian G. Wood, Andrew Dominic Fortes, Kevin S. Knight, Craig L. Bull, Nicholas P. Funnell, R. Sadykov, Alexandra S. Gibbs, David P. Dobson, Christopher J. Ridley

Publikováno v: High Pressure Research. 37:486-494

We describe the capability to measure high-resolution neutron powder diffraction data to a pressure of at least 8 kbar. We have used the HRPD instrument at the ISIS neutron source and a piston-cyli...

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::32bb2e21884ea41d90bb4e6f051b2b54
https://doi.org/10.1080/08957959.2017.1386183

Structure, thermal expansion and incompressibility of MgSO4·9H2O, its relationship to meridianiite (MgSO4·11H2O) and possible natural occurrences

Autor: Ian G. Wood, Andrew Dominic Fortes, Kevin S. Knight

Publikováno v: Acta Crystallographica Section B, Structural Science, Crystal Engineering and Materials

We have employed neutron and X-ray powder diffraction and density functional theory calculations to determine the structure and thermoelastic properties of a new hydrate in the MgSO4–H2O binary system, magnesium sulfate enneahydrate. We show that t

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::59cd7273f8a9998e5c5c43baac216e02
http://europepmc.org/articles/PMC5289306