Faculty of Science and Technology: Recent submissions
Now showing items 1581-1600 of 7367
-
Use of digital technology to follow the consequences of a warming Arctic climate
(Peer reviewed; Journal article, 2021)The rapid warming climate is causing the Arctic ice to retreat and the permafrost to melt. These visible manifestations of the ongoing climate change are few of many environmental and societal changes that take place in ... -
Genomics and transcriptomics yields a system-level view of the biology of the pathogen Naegleria fowleri
(Peer reviewed; Journal article, 2021)Background The opportunistic pathogen Naegleria fowleri establishes infection in the human brain, killing almost invariably within 2 weeks. The amoeba performs piece-meal ingestion, or trogocytosis, of brain material ... -
Proper static potential in classical lattice gauge theory at finite T
(Peer reviewed; Journal article, 2021)We compute the proper real-time interaction potential between a static quark and antiquark in classical lattice gauge theory at finite temperature. Our central result is the determination of the screened real-part of this ... -
Detection of replay attacks in autonomous vehicles using a bank of QPV observers
(Peer reviewed; Journal article, 2021)This paper addresses the problem of replay attack detection in autonomous vehicles. Due to the strong presence of nonlinearities, traditional approaches based on linear approximations of the dynamics would not work ... -
Study of Bondura® Expanding PIN System – Combined Axial and Radial Locking System
(Peer reviewed; Journal article, 2021)Bolted connections are widely used in parallel plates and flanged joints to axially lock using the preload generated by the tightening torque and to constrain radial movements of the flanges by the surface friction between ... -
Experimental study of physical, chemical and mechanical properties of enset and sisal fibers
(Peer reviewed; Journal article, 2021)The properties of composites depend on type and properties of the fiber, fiber structure and treatment. In this study, effects of NaOH treatment on the physical, chemical and mechanical properties of fibers collected from ... -
Steady State Gas Flow from Tight Shale Matrix Subject to Water Blocking
(Peer reviewed; Journal article, 2021)This work studies 1D steady-state flow of gas from compressible shale matrix subject to water blocking toward a neighboring fracture. Water blocking is a capillary end effect causing wetting phase (e.g., water) to accumulate ... -
On the use of the ‘Return Of Safety Investments’ (ROSI) measure for decision-making in the chemical processing industry
(Peer reviewed; Journal article, 2021)Due to the high potential of chemical and process industry to damage people, as well as to cause environmental contamination, there is a need of objective criteria and methods supporting plant operators to make decisions ... -
Geometric surfaces: An invariant characterization of spherically symmetric black hole horizons and wormhole throats
(Peer reviewed; Journal article, 2021)We consider a spherically symmetric line element which admits either a black hole geometry or a wormhole geometry and show that in both cases the apparent horizon or the wormhole throat is partially characterized by the ... -
Safety related study of Expanding Pin systems application in lifting and drilling equipment within Construction, Offshore, and Marine sectors
(Peer reviewed; Journal article, 2021)A questionnaire-based survey has been performed among original equipment manufacturers (OEMs), sub-suppliers, engineering companies, end-users, service & maintenance, and “others”, as part of an investigation to clarify ... -
Mengden av organiserte læringsaktiviteter og sammenhengen med studentenes motivasjon, egeninnsats og overordnede tilfredshet med studiet
(Peer reviewed; Journal article, 2021)I høgskole- og universitetsstudier er det stor forskjell på mengden av læringsaktiviteter som organiseres av institusjonene. Det er med dette utgangspunktet vi i denne studien vil undersøke hvorvidt det er sammenheng mellom ... -
Research Risk Factors in Monitoring Well Drilling—A Case Study Using Machine Learning Methods
(Peer reviewed; Journal article, 2021)This article takes an approach to creating a machine learning model for the oil and gas industry. This task is dedicated to the most up-to-date issues of machine learning and artificial intelligence. One of the goals of ... -
CO2 Convective Dissolution in Oil-Saturated Unconsolidated Porous Media at Reservoir Conditions
(Peer reviewed; Journal article, 2021)During CO2 storage, CO2 plume mixes with the water and oil present at the reservoir, initiated by diffusion followed by a density gradient that leads to a convective flow. Studies are available where CO2 convective mixing ... -
Ensemble-based constrained optimization using an exterior penalty method
(Peer reviewed; Journal article, 2021)In science and engineering, non-linear constrained optimization has been a useful mathematical technique for many practical applications. Of interest to us is its applicability in the modeling and prediction of hydrocarbon ... -
Substituted Two- To Five-Ring Polycyclic Aromatic Compounds Are Potent Agonists of Atlantic Cod (Gadus morhua) Aryl Hydrocarbon Receptors Ahr1a and Ahr2a
(Peer reviewed; Journal article, 2021)Polycyclic aromatic hydrocarbons (PAHs) are among the most toxic and bioavailable components found in petroleum and represent a high risk to aquatic organisms. The aryl hydrocarbon receptor (Ahr) is a ligand-activated ... -
Questionnarie-based Survey of Experiences with the Use of Expanding PIN Systems in Mechanical Joints
(Peer reviewed; Journal article, 2021)In this paper, experiences with the use of expanding pins in mechanical joints in different equipment are investigated through a questionnaire-based survey, where six different sections are highlighted; Size of company, ... -
Overview study on challenges of additive manufacturing for a healthcare application
(Peer reviewed; Journal article, 2021)Additive manufacturing is a rapidly evolving manufacturing technology bringing numerous and wide opportunities for the design team involved in the process by creating intricate and customized products with saving labor, ... -
Experimental investigation and ANN prediction for part quality improvement of fused deposition modeling parts
(Peer reviewed; Journal article, 2021)Fused deposition modeling (FDM) is the most prevalent thermoplastic additive manufacturing technology. Many input parameters and their settings have a significant impact on the quality and functionality of FDM parts produced. ... -
Investigating the Polar Code’s function-based requirements for life-saving appliances and arrangements, and the performance of survival equipment in cold climate conditions – test of SOLAS approved desalting apparatus at low temperatures
(Peer reviewed; Journal article, 2021)As the sea ice extent steadily decreases, the Arctic region is simultaneously experiencing extensive growth in commercial shipping activities, in areas which previously were considered inaccessible for most ships during ... -
Burst strength analysis of composite overwrapped pressure vessel using finite element method
(Peer reviewed; Journal article, 2021)The purpose of this numerical study was to investigate the burst performance of a type III composite overwrapped pressure vessel (COPV) using finite element methods. An Aluminum overwrapped composites pressure vessel was ...