Browsing Øvrige samlinger by Title
Now showing items 26009-26028 of 40057
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On the Effect of CO2 on Seismic and Ultrasonic Properties: A Novel Shale Experiment
(Peer reviewed; Journal article, 2021)Carbon capture and storage (CCS) by geological sequestration comprises a permeable formation (reservoir) for CO2 storage topped by an impermeable formation (caprock). Time-lapse (4D) seismic is used to map CO2 movement in ... -
On the effect of pilot holes on the mechanical behaviour of flow-drill screw joints. Experimental tests and mesoscale numerical simulations
(Peer reviewed; Journal article, 2021)This research work investigated in detail the mechanical performance of a flow-drill screw connection of two aluminium plates with and without pilot holes. An extensive experimental campaign involving material and joint ... -
On the effect of plastic anisotropy, strength and work hardening on the tensile ductility of aluminium alloys
(Journal article; Peer reviewed, 2019)The influence of plastic anisotropy, yield strength and work hardening on ductile failure is studied by nonlinear finite element simulations and strain localization analyses of tensile tests in different material orientations. ... -
On the effect of rounding on hypothesis testing when sample size is large
(Peer reviewed; Journal article, 2022)It is well known that sample moments are more sensitive and less robust than order statistics for robustness with respect to outliers. In this article, we show that the situation is exactly the opposite for robustness with ... -
On the effect of the approach velocity on the coalescence of fluid particles
(Journal article; Peer reviewed, 2019)The effect of the constant relative approach velocity of two Newtonian fluid particles on their coalescence is investigated via a film drainage model. The interfaces are deformable and allowed to have any degree of mobility. ... -
On the effect of the node and building orientation on the fatigue behavior of L-PBF Ti6Al4V lattice structure sub-unital elements
(Peer reviewed; Journal article, 2021)Despite the great potential of additively manufactured (AM) metallic lattice materials, a comprehensive understanding of their mechanical behavior, particularly fatigue, has yet to be achieved. The role of the sub-unital ... -
On the effect of water-induced degradation of thin-film piezoelectric microelectromechanical systems
(Peer reviewed; Journal article, 2021)Lifetime and reliability in realistic operating conditions are important parameters for the application of thin-film piezoelectric microelectromechanical systems (piezoMEMS) based on lead zirconate titanate (PZT). Humidity ... -
On the electrocatalytic symbiotic synergism between Pt, Ni and Al in plasma vapour deposited Pt<inf>x</inf>Ni<inf>y</inf>Al<inf>z</inf> thin metal films for water electrolysis
(Journal article; Peer reviewed, 2021)This work highlights the fact that the activity of an already active metal/surface, i.e. Ni, can be increased even further by combining it with metals/surfaces that exhibit low activity, i.e. Pt and Al, when used on their ... -
On the electrokinetic characterization of charged polymeric membranes by transversal streaming potential
(Peer reviewed; Journal article, 2021)The effect of a transmembrane pressure on the electrokinetic properties of different polymeric charged membranes is analysed. Electrokinetic characterization can involve the application of increasing or decreasing pressure ... -
On the energetics of cation ordering in tungsten-bronze-type oxides
(Journal article; Peer reviewed, 2015)Oxides with the tetragonal tungsten bronze (TTB) structure are well-known ferroelectrics that show a large flexibility both with respect to chemical composition and cation ordering. Two of the simplest compounds in this ... -
On the Equivalence and Impact on Stability of Impedance Modeling of Power Electronic Converters in Different Domains
(Journal article, 2017)Small-signal analysis of power electronic converters and systems is often carried out by impedance-based methods. At the core of these methods lies the impedance modeling, which can either be obtained through analytical ... -
On the Equivalence of Eulerian and Lagrangian Variables for the Two-Component Camassa–Holm System
(Chapter, 2018)The Camassa–Holm equation and its two-component Camassa–Holm system generalization both experience wave breaking in finite time. To analyze this, and to obtain solutions past wave breaking, it is common to reformulate the ... -
On the Estimation of Extreme Values for Risk Assessment and Management: The ACER Method
(Journal article; Peer reviewed, 2015)In this paper we use an Average Conditional Exceedance Rate (ACER) method to model the tail of the price change distribution of daily spot prices in the Nordic electricity market, Nord Pool Spot. We use an AR-GARCH model ... -
On the Ethics of Withholding and Withdrawing Unwarranted Diagnoses.
(Peer reviewed; Journal article, 2022)The number of diagnoses and the number of persons having diagnoses have increased substantially, and studies indicate that diagnoses are given or upheld even if they are unwarranted, that is, that they do not satisfy ... -
On the evaluation of ALD TiO2, ZrO2 and HfO2 coatings on corrosion and cytotoxicity performances
(Peer reviewed; Journal article, 2021)Magnesium alloys have been widely studied as materials for temporary implants, but their use has been limited by their corrosion rate. Recently, coatings have been proven to provide an effective barrier. Though only little ... -
On the Exchange Rate Dynamics of the Norwegian Krone
(Peer reviewed; Journal article, 2023)Global energy production is undergoing a transition from fossils to renewables. At the same time, the Norwegian Oil Fund has grown exponentially in size and is now a major global investor. These events in combination are ... -
On the exergy efficiency of CO<inf>2</inf> capture: The relation between sub-process and overall efficiencies
(Peer reviewed; Journal article, 2023)A generic exergy targeting tool for gas separation processes is developed, which is applicable to any defined boundary conditions for incoming feed gas as well as delivered separation products. Whereas targeting tools in ... -
On the existence of generalized solutions to a spatio-temporal predator–prey system with prey-taxis
(Journal article; Peer reviewed, 2023)In this paper we consider a pair of coupled nonlinear partial differential equations describing the interaction of a predator–prey pair including random movement as well as prey-taxis. We introduce a concept of generalized ... -
On the existence of step-to-step breakpoint transitions in accelerated sprinting
(Journal article; Peer reviewed, 2016)Accelerated running is characterised by a continuous change of kinematics from one step to the next. It has been argued that breakpoints in the step-to-step transitions may occur, and that these breakpoints are an essential ... -
On the External Effects Affecting Torsional Modes in Guide Vanes
(Journal article; Peer reviewed, 2019)Rotor stator interaction in high-head Francis turbines has led to several failures in recent years. Increasing efficiency demands require design optimization of the turbine components, which may lead to thinner profiles. ...