Publications by authors named "Amund Ruud"

Objective: To evaluate the clinical outcome of different designs of zirconia dental implants.

Data: This systematic review adhered to the PRISMA checklist and followed the PICO framework. The protocol is registered in PROSPERO (CRD42022337228).

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Objective: To compare the cumulative impact of sequential wear on mechanical properties and appearance of a composite resin (CR), Filtek Z250, a glass ionomer GI, Fuji IX GP, and a glass hybrid (GH), Equia Forte.

Material And Methods: Six equally sized specimens of each material were subjected to wear tests, i.e.

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Correction for '5D total scattering computed tomography reveals the full reaction mechanism of a bismuth vanadate lithium ion battery anode' by Jonas Sottmann , , 2022, , 27075-27085, https://doi.org/10.1039/D2CP03892G.

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We have used 5D synchrotron total scattering computed tomography (TSCT) to understand the cycling and possible long term deactivation mechanisms of the lithium-ion battery anode bismuth vanadate. This anode material functions a combined conversion/alloying mechanism in which nanocrystals of lithium-bismuth alloy are protected by an amorphous matrix of lithium vanadate. This composite is formed during the first lithiation of the anode.

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Objectives: Particle generation from implant components caused by frictional wear affect the surrounding peri-implant tissues. The objective of this study was to evaluate the effect of combining implant and abutment materials on wear and particle release in a dynamical loading setup.

Methods: A customized dynamical loading machine was used to subject two implant materials (Titanium and Titanium- Zirconium alloy) paired with two different abutment materials (Titanium and Zirconia) to a cyclic loading set of 240.

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Objectve: Several pre-cementation procedures have been advocated to enhance adhesion between zirconia and resin-based cement. There is, however, limited documentation on how these pre-treatments affect the strength of zirconia crowns as most tests are performed on discs or bars. The aim was to assess the effect of pre-cementation procedures on fracture mode, fracture strength and cement retention on zirconia.

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The properties of the mixed system LiBH-LiCl-PS are studied with respect to all-solid-state batteries. The studied material undergoes an amorphization upon heating above 60 °C, accompanied with increased Li conductivity beneficial for battery electrolyte applications. The measured ionic conductivity is ∼10 S cm at room temperature with an activation energy of 0.

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Article Synopsis
  • BiVO4 has been studied as an anode material for lithium ion batteries, achieving a charge capacity of 485 mA h g-1 after 50 cycles, surpassing graphite's theoretical capacity of 372 mA h g-1.
  • Its high volumetric capacity (3984 mA h cm-3) makes BiVO4 suitable for space-efficient battery applications compared to graphite's theoretical limit of 756 mA h cm-3.
  • The research utilized advanced X-ray techniques to identify reaction processes, revealing an irreversible reaction for the Bi3+/Bi0 pair and reversible mechanisms for V5+/V3+ and Bi0/Bi3- pairs, with findings backed by density functional theory calculations.
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γ-MoO3 nanobelts prepared by hydrothermal synthesis were studied by synchrotron radiation powder diffraction, scanning electron microscopy, transmission electron microscopy and selected area electron diffraction. Their nm dimensions, in particular in two crystallographic directions, have a profound influence on electrochemical properties during cycling as the cathode material in lithium-ion batteries (LIBs). The diffraction analysis shows clearly that the crystal structure for the γ-MoO3 nanobelts differs significantly from that of bulk α-MoO3.

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