Blar i Publikasjoner fra CRIStin på emneord "VDP::Matematikk og Naturvitenskap: 400"
Viser treff 1-20 av 154
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5-Methyl-3-vinyl-2-oxazolidinone-Investigations of a New Monomer for Kinetic Hydrate Inhibitor Polymers
(Peer reviewed; Journal article, 2022)Kinetic hydrate inhibitors (KHIs) are polymers used in a chemical method to prevent gas hydrate plugging of oil and gas production flow lines. The main ingredient in a KHI formulation is one or more water-soluble amphiphilic ... -
Addressing challenges in uncertainty quantification: The case of geohazard assessments
(Peer reviewed; Journal article, 2023)We analyse some of the challenges in quantifying uncertainty when using geohazard models. Despite the availability of recently developed, sophisticated ways to parameterise models, a major remaining challenge is constraining ... -
Advances in the Study of Gas Hydrates by Dielectric Spectroscopy
(Peer reviewed; Journal article, 2021)The influence of kinetic hydrate inhibitors on the process of natural gas hydrate nucleation was studied using the method of dielectric spectroscopy. The processes of gas hydrate formation and decomposition were monitored ... -
Aerodynamic influence of an alpine skier’s arms
(Peer reviewed; Journal article, 2022)Understanding how postural changes in alpine skiing affect the overall aerodynamic drag is highly important for enhancing performance. Although the arm configuration of the athlete can have a significant impact on the ... -
Alternative Lactam-Based Kinetic Hydrate Inhibitors - Investigation of Polymers of 2‑Methacrylamido-caprolactam
(Peer reviewed; Journal article, 2022)Kinetic hydrate inhibitors (KHIs), such as poly(N-vinylcaprolactam) (PVCap) and related copolymers, are a well-known method to help combat gas hydrate formation in oil and gas field production flow lines. The caprolactam ... -
Analysis of deceptive data attacks with adversarial machine learning for solar photovoltaic power generation forecasting
(Peer reviewed; Journal article, 2022)The solar photovoltaics (PV) energy resources have become more important with their significant contribution to the current power grid among renewable energy resources. However, the integration of the solar PV causes ... -
Atropisomerism in Tertiary Biaryl 2-Amides: A Study of Ar-CO and Ar-Ar? Rotational Barriers
(Peer reviewed; Journal article, 2017)A rotational barrier study was performed on eight tertiary biaryl 2-amides using variable temperature (VT) NMR and exchange (EXSY) spectroscopy experiments. Seven out of the eight 2-amido-2′-methylbiphenyls with additional ... -
Bed packing configuration and hot-spot utilization for low-temperature CO2 methanation on monolithic reactor
(Peer reviewed; Journal article, 2022)The revival of CO2 methanation (Sabatier reaction) as part of the large-scale Power-to-Gas technology has stimulated the development of novel reactor concepts for better heat management due to its exothermic nature. The ... -
BFV-Based Homomorphic Encryption for Privacy-Preserving CNN Models
(Peer reviewed; Journal article, 2022)Medical data is frequently quite sensitive in terms of data privacy and security. Federated learning has been used to increase the privacy and security of medical data, which is a sort of machine learning technique. The ... -
Biohydrogen production from industrial wastewater: An overview
(Peer reviewed; Journal article, 2019-09)Biohydrogen production from industrial wastewater has been a focus of interest in recent years. The in depth knowledge in lab scale parameters and emerging strategies are needed to be investigated in order to implement the ... -
Black hole spectroscopy in the next decade
(Peer reviewed; Journal article, 2020)Gravitational wave observations of the ringdown of the remnant black hole in a binary black hole coalescence provide a unique opportunity of confronting the black hole no-hair theorem in general relativity with observational ... -
Boundaries, limits, landscapes and flows: An analytical framework for boundaries in natural resource management
(Peer reviewed; Journal article, 2021)In times of increasing pressure on natural resources, resource boundaries have become more ambiguous. Resources are increasingly interlinked, and competing users may define a resource and its boundaries differently. At ... -
Bridge buffeting by skew winds: A quasi-steady case study
(Peer reviewed; Journal article, 2022)The buffeting response of a 5000-m-long curved floating bridge is investigated for different mean wind directions, with emphasis on the wind load formulations and use of experimental data. Wind tunnel tests, with a section ... -
Bubble nucleation and quantum initial conditions in classical statistical simulations
(Peer reviewed; Journal article, 2022)Classical-statistical lattice simulations provide a useful approximation to outof-equilibrium quantum field theory, but only for systems exhibiting large occupation numbers, and only for phenomena that are not intrinsically ... -
The burden of emerging contaminants upon an Atlantic Ocean marine protected reserve adjacent to Camps Bay, Cape Town, South Africa
(Peer reviewed; Journal article, 2022)The presence and levels of fifteen chemicals of emerging concerns, including five perfluorinated compounds (PFCs), two industrial chemicals, seven pharmaceuticals and one personal care product, were evaluated in biota, ... -
A case study of offshore wind turbine positioning optimization methodology using a novel multi-stage approach
(Peer reviewed; Journal article, 2022)This investigation maximize the annual energy production (AEP) of a wind farm’s layout at a specific site using a novel multi-stage approach. The downstream wind turbines’ energy production decreases due to the reduced ... -
Challenges with Gas Hydrate Formation
(Peer reviewed; Journal article, 2019)Many multiphase flow lines are prone to hydrate formation unless prevention methods are put in place. Chemical management of hydrate formation is traditionally done with thermodynamic hydrate inhibitors but in the last 25 ... -
Chemical equilibration in hadronic collisions
(Peer reviewed; Journal article, 2019)We study chemical equilibration in out-of-equilibrium quark-gluon plasma using the first principles method of QCD effective kinetic theory, accurate at weak coupling. In longitudinally expanding systems—relevant for ... -
Chemical equilibration in weakly coupled QCD
(Peer reviewed; Journal article, 2019)We study thermalization, hydrodynamization, and chemical equilibration in out-of-equilibrium quark-gluon plasma starting from various initial conditions using QCD effective kinetic theory, valid at weak coupling. In ... -
Comparison of different configurations of a solar-assisted ground-source CO2 heat pump system for space and water heating using Taguchi-Grey Relational analysis
(Peer reviewed; Journal article, 2023)This work deals with the comparison of different optimized configurations of solar-assisted ground-source CO2 heat pump systems using the Taguchi method and Grey Relational Analysis (GRA) when used for simultaneous space ...