Faculty of Science and Technology: Recent submissions
Now showing items 1-20 of 7571
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Noise pollution from Arctic expedition cruise vessels: understanding causes, consequences and governance options
(Peer reviewed; Journal article, 2024-10)Significant increase in shipping in the Arctic has caught international and national attention. The rising presence of touristic expedition cruise vessels might describe a special case for noise as a marine pollutant while ... -
Mitigation of climate change. Risk and uncertainty research gaps in the specification of mitigation actions
(Peer reviewed; Journal article, 2024-09)In this perspective paper, we are concerned with the general problem of how to increase the probability of achieving the expected outcomes of climate change mitigation actions. Climate change mitigation actions prevent, ... -
Observation of Gravitational Waves from the Coalescence of a 2.5–4.5 M⊙ Compact Object and a Neutron Star
(Peer reviewed; Journal article, 2024)We report the observation of a coalescing compact binary with component masses 2.5–4.5 M⊙ and 1.2–2.0 M⊙ (all measurements quoted at the 90% credible level). The gravitational-wave signal GW230529_181500 was observed during ... -
Investigation of operational settings, environmental conditions, and faults on the gas turbine performance
(Peer reviewed; Journal article, 2024)Gas turbine engines are complex mechanical marvels widely employed in diverse applications such as marine vessels, aircraft, power generation, and pumping facilities. However, their intricate nature renders them susceptible ... -
Kinetic Hydrate Inhibitors─Which is Best, Block or Statistical Copolymers?
(Peer reviewed; Journal article, 2024)Kinetic hydrate inhibitors (KHIs) have been used for nearly 30 years to prevent gas hydrate formation in oil and gas production flow lines. The main component in KHI formulations is one or more water-soluble polymers. ... -
Mitochondrial complex I deficiency stratifies idiopathic Parkinson’s disease
(Peer reviewed; Journal article, 2024)Idiopathic Parkinson’s disease (iPD) is believed to have a heterogeneous pathophysiology, but molecular disease subtypes have not been identified. Here, we show that iPD can be stratified according to the severity of ... -
Probing Ce- and Zr-Fumarate Metal-Organic Framework Formation in Aqueous Solutions with In Situ Raman Spectroscopy and Synchrotron X-ray Diffraction
(Peer reviewed; Journal article, 2024)The synthesis of Ce-fumarate and Zr-fumarate metal–organic framework (MOF) is monitored for the first time with in situ Raman spectroscopy in custom-built solvothermal reactors. Several synthesis conditions were explored ... -
Journey mapping the digital remote care services: Problems and opportunities for a large-scale implementation in China
(Peer reviewed; Journal article, 2024)Digital remote care has emerged as a transformative approach in the delivery of healthcare services. This paper presents an empirical case study that investigates the utilization of digital remote care for postoperative ... -
Material for Zonal Isolation of Shallow Formation: State-of-the-art and Development of Alternative Material
(PhD Theses;808, Doctoral thesis, 2024)Shallow depth cementing remains a challenge in well construction due to its unique characteristic of low temperature and low formation pressure. Potential flow zones such as shallow gas and shallow water flow increase ... -
Regiodivergent Synthesis and Biological Activities of Indoloquinoline Based Compounds
(Peer reviewed; Journal article, 2024)Cryptolepine, neocryptolepine, and isocryptolepine have remained popular synthetic targets ever since their isolation from the aqueous extracts of the West African climbing shrub Cryptolepis sanguinolenta. These natural ... -
Sequential drilling decisions based on explicit joint probability distribution of spatially distributed subsurface data: Modeling and value creation propositions
(PhD thesis UiS;, Doctoral thesis, 2024)Revenue from hydrocarbon production depends on physical properties whose values change spatially and only sampled in a few locations by the time of capital commitment. Drilling new wells enables hydrocarbon production, but ... -
Evaluate to what extent the ISO 9001:2015 standard incorporates risk-based thinking
(Master thesis, 2024) -
Ekstremisme på sosiale medier - en eksplorativ studie for å belyse ekstremisters bruk av sosiale medier
(Master thesis, 2024)Ved bruk av intervju og en litteraturstudie forsøker oppgaven å besvare hvorfor ekstremister bruker sosiale medier. Det blir tatt utgangspunkt i tre forskningsspørsmål: hva ekstremisme er, hvilke sosiale medier ekstremister ... -
Generalizing the Black and Scholes Equation Assuming Differentiable Noise
(Peer reviewed; Journal article, 2024-10)This article develops probability equations for an asset value through time, assuming continuous correlated differentiable Gaussian distributed noise. Ito’s (1944) stochastic integral and a generalized Novikov’s (1919) ... -
Estimating sensitivity with the Bruceton method: Setting the record straight
(Peer reviewed; Journal article, 2024-07)Accurate estimates of sensitivities of energetic materials are crucial for ensuring safe production, transport, usage and destruction of explosives. When estimating sensitivities, researchers most commonly follow the NATO ... -
Optimization of Offshore Saline Aquifer CO2 Storage in Smeaheia Using Surrogate Reservoir Models
(Peer reviewed; Journal article, 2024-10)Machine learning-based Surrogate Reservoir Models (SRMs) can replace/augment multi-physics numerical simulations by replicating the reservoir simulation results with reduced computational effort while maintaining accuracy ... -
Exploring Security Resilience in a High-Risk Environment
(Master thesis, 2024)Equinor has been involved in the planning of a gas extraction project in Tanzania for more than a decade and is currently in negotiations with the Tanzanian government concerning a potential LNG project to the south of the ... -
Synthesis of Quinone Metabolites by Electrochemical and Chemical Oxidation
(PhD thesis UiS;, Doctoral thesis, 2024)Electrochemical oxidation of polycyclic aromatic phenols (PAPs) has been developed in a microfluidic flow cell to synthesize polycyclic aromatic quinones. This method applies methanol as a nucleophile source while OH directs ... -
Designing and Utilizing Machine Learning in Investment Strategies
(Master thesis, 2024)This thesis presents a comprehensive exploration of a machine learning (ML)-based trading strategy using the XGBoost regressor to predict daily stock price percent changes to be utilized in an investment strategy. The ... -
Design, Numerical Modelling, and Dynamic Analysis of Combined Wind and Wave Energy Systems for Intermediate Water Depths
(PhD thesis UiS;, Doctoral thesis, 2024)A promising strategy to fully harness the potential of offshore wind and wave energy lies in their combined exploitation. While the Development of integrated wind and wave energy systems is still in the early stages, recent ...