167 research outputs found
Direct measurement of Ni incorporation into Fe₃O₄(001)
The normal incidence X-ray standing wave (NIXSW) technique has been used to follow the evolution of the adsorption geometry of Ni adatoms on the Fe₃O₄(001)-(√2 × √2)R45° surface as a function of temperature. Two primary surface region sites are identified: a bulk-continuation tetrahedral site and a sub-surface octahedral site, the latter site being preferred at higher annealing temperatures. The ease of incorporation is linked to the presence of subsurface cation vacancies in the (√2 × √2)R45° reconstruction and is consistent with the preference for octahedral coordination observed in the spinel compound NiFe₂O₄
Uranium(VI) Bis(imido) Chalcogenate Complexes: Synthesis and Density Functional Theory Analysis
Longitudinal stability of the diurnal rhythm of intraocular pressure in subjects with healthy eyes, ocular hypertension and pigment dispersion syndrome
Competitive examination od a novel drug, leflunomide, in the abrogation of experimental autoimmune kidney disease and graft rejection
A single centre experience of adult onset macrophage activation syndrome in the context of systemic autoimmune disease: Tough to diagnose - tougher to treat
Rank 2 quasiparabolic vector bundles on P 1 and the variety of linear subspaces contained in two odd-dimensional quadrics
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