Fakultet for teknologi, naturvitenskap og maritime fag: Recent submissions
Now showing items 41-60 of 1678
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The Impact of Autonomous Inflow Control Valve on Improved Oil Recovery in a Thin-Oil-Rim Reservoir
(Peer reviewed; Journal article, 2024)Oil production from thin-oil-rim fields can be challenging as such fields are prone to gas coning. Excessive gas production from these fields results in poor production and recovery. Hence, these resources require advanced ... -
A camera trapping method for the targeted capture of Eurasian beaver (Castor fiber) tails for individual scale pattern recognition
(Peer reviewed; Journal article, 2023)Camera traps are commonly used to monitor and study wild animals in their natural habitat, with minimal disturbance. Several investigations have shown that the natural markings of animals for some species can be used for ... -
Individual recognition of Eurasian beavers (Castor fiber) by their tail patterns using a computer-assisted pattern-identification algorithm
(Peer reviewed; Journal article, 2024)Individual recognition of animals is an important aspect of ecological sciences. Photograph-based individual recognition options are of particular importance since these represent a non-invasive method to distinguish and ... -
A tale of tails: the use of Eurasian beaver (Castor fiber) tails for ageing and individual identification
(Peer reviewed; Journal article, 2023)With increasing technology and knowledge, the range of methods used to monitor wildlife is growing. As many invasive techniques have been shown to negatively impact study populations, the use of non-invasive methods is ... -
Electrode Design Based on Strain Mode Shapes for Configurable PMUTs
(Peer reviewed; Journal article, 2023)Piezoelectric micromachined ultrasonic transducers (PMUTs) with multiple electrodes can be utilized as multi-frequency transducers by exciting selected vibration modes of the diaphragm providing configurability that may ... -
ESP Lifted Oil Field: Core Model, and Comparison of Simulation Tools
(Peer reviewed; Journal article, 2023)Optimal operation of petroleum production is important in a transition from energy systems based on fossil fuel to sustainable systems. One sub-process in petroleum production deals with transport from the (subsea) well-bore ... -
Annual ring width in the mediterranean-alpine shrub species Cytisus galianoi - dataset from long-term alpine ecosystem research in the Sierra Nevada, Spain (Ltaer-es)
(Journal article, 2023)This is a datapaper including microscopically measured data of annual ring widths from the Mediterranean-alpine shrub species Cytisus galianoi (Sierra Nevada, Spain). The dataset will be updated with future measurements. -
Systems Engineering Education: From Learning Program to Business Value
(Peer reviewed; Journal article, 2023)The complexity of delivering business value is increasing technically and socially. The increasing complexity triggers the need for an increase in systems competence in several roles within the technical domain. One of the ... -
Patterns, timing, and environmental drivers of secondary growth in two physiologically distinct Mediterranean alpine shrub species
(Peer reviewed; Journal article, 2023)Alpine plants are particularly sensitive to climate change, and in the Mediterranean, less frequent winter cold and prolonged summer drought are expected to shift the growth patterns of species, altering their range and ... -
Parameter Estimation for a Gas Lifting Oil Well Model Using Bayes' Rule and the Metropolis–Hastings Algorithm
(Peer reviewed; Journal article, 2022)Oil well models are frequently used in the oil production process. Estimation of unknown parameters of these models has long been a question of great interest in the oil industry field. Data collected from an oil well ... -
Security Constrained Unit Commitment and Economic Dispatch by AC Sensitivity Factors
(Chapter, 2022)The dispatch schedule of the electrical power plant units is the result of the solution to the unit commitment optimisation problem, and it minimises the cost of production considering pre-defined technical limits. The ... -
Comparison of AC-Superconducting Multi-Phase Symmetric-Winding Topologies for Wind Power Generators with PM Rotors
(Peer reviewed; Journal article, 2022)In this paper, an AC superconducting multi-phase symmetric-winding machine is designed for a wind power generator to improve its performance and reduce losses, where four handpicked topological designs were explored and ... -
Characterization of the Electrical Properties of a Double Heterostructure GaN/AlGaN Epitaxial Layer with an AlGaN Interlayer
(Peer reviewed; Journal article, 2021)This paper proposes a double-heterostructure (DH) GaN/AlGaN epitaxial layer that contains an AlGaN interlayer. The electrical properties are characterized and compared with conventional single-heterostructure (SH) GaN/AlGaN ... -
Application of electrochemical methods for the detection of abiotic stress biomarkers in plants
(Peer reviewed; Journal article, 2021)Abiotic stress is the main cause of low productivity in plants. Therefore, it is important to detect stress and respond to it in a timely manner to avoid irreversible damage to plant productivity and health. The application ... -
Patterns, timing, and environmental drivers of growth in two coexisting green-stemmed Mediterranean alpine shrubs species
(Peer reviewed; Journal article, 2023)The Mediterranean alpine is one of the most vulnerable ecosystems under future environmental change. Yet, patterns, timing and environmental controls of plant growth are poorly investigated. We aimed at an improved ... -
Simulation of blue hydrogen production by natural gas in the North Sea
(Peer reviewed; Journal article, 2023)Hydrogen is an efficient energy carrier and an important contribution to sustainable energy development. Hydrogen can be produced based on different methods and on different raw materials. Blue hydrogen is hydrogen produced ... -
Simulation of Oil Recovery Through Advanced Wells Using a Transient Fully Coupled Well-Reservoir Model
(Chapter, 2023)Oil recovery can be enhanced by maximizing the well-reservoir contact using long horizontal wells. One of the main challenges of using such wells is the early breakthrough of unwanted fluids due to the heel-toe effect and ... -
Load prioritization technique to guarantee the continuous electric supply for essential loads in rural microgrids
(Peer reviewed; Journal article, 2021)Microgrid (MG) is one of the practical and best concepts to provide energy access to rural communities, where electric grid extension is not techno-economically feasible. Since the trend of load consumption is not uniform ... -
Comprehensive Local Sensitivity Analysis of the ADM1-Based Anaerobic Digestion Process
(Journal article, 2022)Anaerobic digestion is a popular method for treating waste and producing biogas. It remains challenging to automate and optimize the operation of the digester because of its complex process and suffering from great ... -
Geochemical landscapes as drivers of wildlife reproductive success: Insights from a high-Arctic ecosystem
(Peer reviewed; Journal article, 2023)The bioavailability of essential and non-essential elements in vegetation is expected to influence the performance of free-ranging terrestrial herbivores. However, attempts to relate the use of geochemical landscapes by ...