Institutt for geovitenskap og petroleum: Nye registreringer
Viser treff 61-80 av 2535
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A simplified pore-scale model for slow drainage including film-flow effects
(Peer reviewed; Journal article, 2023)Liquid-filled corners and capillary bridges can establish networks connecting seemingly isolated clusters during drainage in porous media. Coupled with drainage through the bulk of pores and throats, the flow through these ... -
Transmissivity averaging in fracture flow on self-affine linear profiles: arithmetic, harmonic, and beyond
(Journal article; Peer reviewed, 2023) -
Effects of Mechanical Stirring and Ultrasound Treatment on the Separation of Graphite Electrode Materials from Copper Foils of Spent LIBs: A Comparative Study
(Peer reviewed; Journal article, 2023)In this paper, mechanical stirring and ultrasonic treatment are used to separate graphite electrode materials from copper foils in recycling spent lithium-ion batteries (LIBs). Firstly, the effects of ultrasonic power ... -
Frictional fluid instabilities shaped by viscous forces
(Peer reviewed; Journal article, 2023)Multiphase flows involving granular materials are complex and prone to pattern formation caused by competing mechanical and hydrodynamic interactions. Here we study the interplay between granular bulldozing and the stabilising ... -
Geochemical & Mineralogical assessment of the Anundsjøen, Larvik Potential Nepheline Syenite deposit for use in glass and ceramics
(Master thesis, 2023)Sammendrag Nefelinsyenitt er et industrimineral som brukes innen glass- og kjeramikk industrien, ettersom det tillater lavere og mer stabile smeltetemperaturer. Avhengig av dens geokjemiske sammensetning, kan den ha en ... -
Hydraulic Transient Impact on Surrounding Rock Mass of Unlined Pressure Tunnels
(Peer reviewed; Journal article, 2023)The frequent pressure pulsations due to hydraulic transients in hydropower plants induce cyclic loading on the rock mass that may contribute to increased instances of block falls and increased risk of tunnel collapse over ... -
An Invitation on Characterization of H<inf>2</inf>-Reduced Bauxite Residue and Recovering Iron through Wet Magnetic Separation Processes
(Peer reviewed; Journal article, 2023)Recovering iron from the bauxite residue (BR) is one of the long-standing challenges in the mining industry. However, there is a substantial lack of information in the literature regarding sample properties and iron ... -
An Investigation on Reduction of Calcium Added Bauxite Residue Pellets by Hydrogen and Iron Recovery through Physical Separation Methods
(Peer reviewed; Journal article, 2023)This study investigates the properties of H2-reduced calcium-added bauxite residue, self-hardened pellets, and the feasibility of iron recovery through electrostatic and magnetic separation methods. The oxide pellets are ... -
MyI-Net: Fully Automatic Detection and Quantification of Myocardial Infarction from Cardiovascular MRI Images
(Peer reviewed; Journal article, 2023)Myocardial infarction (MI) occurs when an artery supplying blood to the heart is abruptly occluded. The “gold standard” method for imaging MI is cardiovascular magnetic resonance imaging (MRI) with intravenously administered ... -
Automated Mineralogy and Diagnostic Leaching Studies on Bulk Sulfide Flotation Concentrate of a Refractory Gold Ore
(Peer reviewed; Journal article, 2023)Obtaining detailed and precise information from a classified refractory gold ore has been a long-standing challenge in mineral processing and process mineralogy. Although the concept of diagnostic leaching has been extensively ... -
Systematic Study of Wettability Alteration of Glass Surfaces by Dichlorooctamethyltetrasiloxane Silanization - A Guide for Contact Angle Modification.
(Peer reviewed; Journal article, 2023)To investigate the effects of wettability on multiphase flow in porous media, glass bead packs or micromodels are commonly used. Their wettability can be altered by the surface treatment method–silanization. Although ... -
Image-based and risk-informed detection of Subsea Pipeline damage
(Peer reviewed; Journal article, 2023)As one of the most important assets in the transportation of oil and gas products, subsea pipelines are susceptible to various environmental hazards, such as mechanical damage and corrosion, that can compromise their ... -
Bubble Formation and Motion in Liquids—A Review
(Journal article; Peer reviewed, 2023)In flotation, a bubble acts as a carrier for attached particles. The properties of the gas–liquid interface of the bubble are one of the main factors determining the bubble motion and flotation efficiency. Monitoring of ... -
Sensitivity Wellbore Geometry Analysis of an Integrated Production Modelling Asset for a North Sea Conceptual Reservoir Model
(Master thesis, 2023)Valget av brønnhullsgeometri og diameter spiller en avgjørende rolle for effektiv utvinning av hydrokarboner fra reservoarer, siden det direkte påvirker strømningsoppførselen og den endelige produksjonsytelsen. Den optimale ... -
GIS-analyse av terrengendringer i kvikkleirefarlige områder med eksempler fra Trøndelag
(Master thesis, 2023)I Norge har det gått en rekke kvikkleireskred gjennom historien. Noen av disse har knapt vært merkbare, mens andre har fått katastrofale følger. Gjerdrumskredet i 2020 er et eksempel på det siste, da det resulterte i store ... -
A Space Reduction Heuristic for Thermal Unit Commitment Considering Ramp Constraints and Large-Scale Generation Systems
(Peer reviewed; Journal article, 2023)This paper expands the research around a recently proposed method to reduce the search space region for thermal unit commitment problems. The importance of such techniques comes from the combinatorial explosion regarding ... -
Adsorptive Removal Behavior of Pb (II) and Cr (VI) Pollutants from an Aqueous Environment onto Polyaniline-Modified MIL100(Fe)
(Peer reviewed; Journal article, 2023)The present work introduces a new sorbent, so-called PANI/MIL100(Fe), for removing Pb (II) and Cr (VI) from wastewater. The successful preparation of PANI/MIL100(Fe) was verified via Fourier-transform infrared spectroscopy ... -
Microscale Magnetic Inversion of Remanent Magnetization Mineral Sources From the Black Hill Norite, South Australia
(Peer reviewed; Journal article, 2023)Inverse modeling of regional-scale aeromagnetic data is complicated due to the non-uniqueness principle and interference of anomalies, especially with increased source-sensor separation. This is why in situ data and ... -
Evaluation of the Effects of Coal Jigging by Means of Kruskal–Wallis and Friedman Tests
(Peer reviewed; Journal article, 2023)Coal beneficiation processes are often based on gravitational enrichment techniques. Therefore, various types of jigs are often used in this area. A number of factors determine the quality of the final product. Therefore, ... -
Injeksjon i urbane tunneler
(Master thesis, 2023)Denne masteroppgaven presenterer prosjektet Sandbukta-Moss-Såstad, som er en del av InterCity utbyggingen på Østlandet. I dette prosjektet bygges det to tunneler, Mossetunnelen og Carlbergtunnelen. Disse tunnelene går ...