A5066281232- High-pressure geophysics and materials
- Geological and Geochemical Analysis
- earthquake and tectonic studies
- Seismic Imaging and Inversion Techniques
- Astro and Planetary Science
- Seismic Waves and Analysis
- Geomagnetism and Paleomagnetism Studies
- X-ray Diffraction in Crystallography
- Hydrocarbon exploration and reservoir analysis
- Distributed and Parallel Computing Systems
- Scientific Computing and Data Management
- Crystal Structures and Properties
- Microstructure and mechanical properties
- Geophysics and Sensor Technology
- Geophysics and Gravity Measurements
- Advanced Data Storage Technologies
- Theoretical and Computational Physics
- Advanced Condensed Matter Physics
- Minerals Flotation and Separation Techniques
- Earthquake Detection and Analysis
- nanoparticles nucleation surface interactions
- Planetary Science and Exploration
- Angiogenesis and VEGF in Cancer
- Pelvic floor disorders treatments
- Magnetic and Electromagnetic Effects
University of Calgary
2024
University of Oxford
2021-2024
Foothills Medical Centre
2024
University of Leeds
2014-2024
Utah State University
2024
University of Bristol
2010-2023
University of Minnesota
2020-2022
Mott MacDonald (Czechia)
2018
Royal Institution of Great Britain
2003-2015
Walker (United States)
2015
Breathtaking MOFs: DFT calculations reveal that the exceptional, thermally induced density change of metal–organic framework MIL53(Al) is controlled by a competition between short- and long-range interactions entropic factors. As shown in picture (C green, Al cyan, O red, H white), dispersive phenyl rings are responsible for stabilizing narrow-pore form at low temperature. At 325–375 K, vibrational entropy causes structure to expand markedly, permitting large volumes light gases be adsorbed....
<h3>Abstract</h3> <b>Objective:</b> To establish if a brief programme of domiciliary occupational therapy could improve the recovery patients with stroke discharged from hospital. <b>Design:</b> Single blind randomised controlled trial. <b>Setting:</b> Two hospital sites within UK teaching <b>Subjects:</b> 138 definite plan for discharge home <b>Intervention:</b> Six week or routine follow up. <b>Main outcome measures:</b> Nottingham extended activities daily living score and "global...
Predicting and understanding the chemical bond is one of major challenges computational quantum chemistry. Kohn-Sham density functional theory (KS-DFT) most common method, but approximate functionals may not be able to describe systems where multiple electronic configurations are equally important. Multiconfigurational wave functions, on other hand, can provide a detailed structures bonds such systems. In complete active space self-consistent field (CASSCF) performs full configuration...
Welcome to the wonderful world of AxiSEM3D, a flexible, high-performance computational method for solving elastodynamic wave equation in three-dimensional, hetereogeneous media. It has been used seismology Earth, Sun, Moon, and many other rocky planets moons Solar System. In this manual, we will explore practicalities using code, touching on mathematical aspects as relevant casual user, input output files, pre- post-processing. This guide is not replacement any AxiSEM3D papers, which you...
Infrared spectroscopy on synthetic olivines has established that there are at least four different mechanisms by which hydrogen is incorporated into the crystal structure. Two occur in system MgO‐SiO 2 ‐H O associated with silicon and magnesium vacancies, respectively. A third mechanism trivalent cation substitution, commonly Fe 3+ natural olivine, while fourth mechanism, one most prevalent from spinel‐peridotite facies of Earth's upper mantle, Ti 4+ [Berry et al., 2005]. Here first...
In order to test the hypothesis that seismic anisotropy in lowermost mantle is caused by development of a post-perovskite lattice preferred orientation, and can thus be used as probe dynamics mantle's lower boundary layer, an integrated model texture generation D″ developed. This predict elastic probed global anisotropic tomographic inversions. The combines current 3D flow field with simulations deformation polycrystalline aggregates. Different descriptions single crystal plasticity lead...
The formation of Earth's solid inner core is thought to mark a profound change in the evolution deep Earth and power that available generate geomagnetic field. Previous studies generally find nucleated around 0.5–1 billion years ago, but neglect fact homogeneous liquids must be cooled far below their melting point order for solids form spontaneously. classical theory nucleation predicts undercooled by several hundred K, which incompatible with estimates core's present-day temperature. This...
Large low velocity provinces (LLVPs) dominate the lowermost mantle, but their detailed thermochemical nature remains a topic of discussion. Particularly, it is unclear to what extent bridgmanite post-perovskite phase transition able explain characteristics. Robust constraints on origin these seismic structures would shed light large-scale dynamic processes in mantle. Here, we examine combined effects both chemical heterogeneity and transitions mantle tomographic signatures. We calculate...
Slurry regions may exist in the cores of several terrestrial bodies and are expected to influence dynamics deep planetary interiors viability maintaining global magnetic fields. Here, we develop a two-component slurry model lowermost outer core Earth (the F-layer). In contrast most previous models slurries cores, explicitly physics controlling nucleation, growth sinking individual iron crystals do not assume that layer is phase equilibrium. We falling interact temperature overall composition...
Abstract Objective Federated learning (FL) allows multiple distributed data holders to collaboratively learn a shared model without sharing. However, individual health system are heterogeneous. “Personalized” FL variations have been developed counter heterogeneity, but few evaluated using real-world healthcare data. The purpose of this study is investigate the performance single-site versus 3-client federated previously described Coronavirus Disease 19 (COVID-19) diagnostic model....
How reliable are shear wave splitting measurements as a means of determining mantle flow direction? This remains topic debate, especially in the context subduction. The answer hinges on whether our current understanding mineral physics provides enough to accurately translate between seismic observations and deformation. Here, we present an integrated model simulate strain‐history‐dependent texture development estimate resulting subduction environments. We do this for that, its geometry,...
The structures of eight synthetic samples hibonite, with variable Ti oxidation state and concentration (2.4-15.9 wt% TiO2) that span the range reported for natural hibonite found in meteorites, were determined by Rietveld refinements neutron powder diffraction data. Ti3+ was to exclusively occupy octahedral face-sharing M4 site irrespective presence or absence Ti4+. Ti4+ partitions between trigonal bipyramidal M2 site. ratio (Ti4+ on M2):(Ti4+ M4) appears be constant all samples, an average...
Abstract It is widely accepted that water-rich serpentinite domains are commonly present in the mantle above shallow subducting slabs and play key roles controlling geochemical cycling physical properties of subduction zones. Thermal petrological models show dominant serpentine mineral antigorite. However, there no good consensus on amount, distribution alignment this mineral. Seismic velocities used to identify antigorite-rich domains, but antigorite highly-anisotropic depending seismic ray...