Blar i Faculty of Mathematics and Natural Sciences på tittel
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Subsea pump vibration analysis for predictive maintenance
(Master thesis, 2015-11-29)The goal of this study is to compare vibration signals of subsea pumps from two different time periods. These signals are gathered for predictive maintenance reasons. Vibration analysis is one of the most efficient tools ... -
Substantial Sparing of Organs at Risk with Modern Proton Therapy in Lung Cancer, but Altered Breathing Patterns Can Jeopardize Target Coverage
(Journal article; Peer reviewed, 2022-03-08)Enhancing treatment of locally advanced non-small cell lung cancer (LA-NSCLC) by using pencil beam scanning proton therapy (PBS-PT) is attractive, but little knowledge exists on the effects of uncertainties occurring between ... -
Substantial spatial variation in glacial erosion rates in the Dronning Maud Land Mountains, East Antarctica
(Journal article; Peer reviewed, 2021)The coast-parallel Dronning Maud Land (DML) mountains represent a key nucleation site for the protracted glaciation of Antarctica. Their evolution is therefore of special interest for understanding the formation and ... -
Substation Location in Offshore Wind Farms - A Planar Multi-Facility Location-Routing Problem
(Master thesis, 2014-03-14)In offshore wind farms, two important parts of the design are to determine locations for substations and a cabling layout that connects every turbine to a substation. These problems are interconnected, as the cable layout ... -
Substituted Two- To Five-Ring Polycyclic Aromatic Compounds Are Potent Agonists of Atlantic Cod (Gadus morhua) Aryl Hydrocarbon Receptors Ahr1a and Ahr2a
(Journal article; Peer reviewed, 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 ... -
Substorm Current Wedge: Energy Conversion and Current Diversion
(Journal article; Peer reviewed, 2020)Using a magnetohydrodynamic simulation of magnetotail reconnection, flow bursts, and dipolarization, we further investigate the current diversion and energy flow and conversion associated with the substorm current wedge ... -
Substorm Impact on Dayside Ionospheric Currents
(Journal article; Peer reviewed, 2023)Ionospheric dayside dynamics is strongly controlled by the interaction between the Interplanetary Magnetic Field (IMF) and the Earth's magnetic field near the dayside magnetopause, while nightside ionospheric dynamics ... -
Substorm Onset Latitude and the Steadiness of Magnetospheric Convection
(Peer reviewed; Journal article, 2019-03-10)We study the role of substorms and steady magnetospheric convection (SMC) in magnetic flux transport in the magnetosphere, using observations of field‐aligned currents by the Active Magnetosphere and Planetary Electrodynamics ... -
Subsurface Faults Permeability study: Utilization of production data in an exploratory phase, Njord field Heltan Terrace Norwegian Continental Shelf (NCS)
(Master thesis, 2024-01-08)Faults in the subsurface can either aid or block fluid movement based on rock permeability. Analytical techniques measure fault seal capacity for hydrocarbon exploration and carbon capture and storage (CCS) planning. Fault ... -
Subsurface maxima in buoyant fish eggs indicate vertical velocity shearand spatially limited spawning grounds
(Peer reviewed; Journal article, 2019-05)Observed vertical profiles of buoyant particles, in this case pelagic Northeast Arctic (NEA) cod eggs, occasionally deviate from the vertical diffusion‐buoyancy balance by displaying subsurface maxima. Here, we present a ... -
SUCCESS: SUbsurface CO2 storage–Critical elements and superior strategy
(Peer reviewed; Journal article, 2011)SUCCESS is a Center for Environmental Energy Research in Norway and performs research related to geological storage of CO2 in the subsurface. The SUCCESS centre is established by the Research Council of Norway together ... -
Sudanese Coastal Water- Composition and Some Environmental Aspects
(Master thesis, 2012-09-24)Red Sea water samples were collected from four stations in the Sudanese coast at depth of 10 m during July 2011 and analyzed for major ions and trace metals in order to determine their insitu concentration, their distribution ... -
Sudden, local temperature increase above the continental slope in the southern Weddell Sea, Antarctica
(Journal article; Peer reviewed, 2023)Around most of Antarctica, the Circumpolar Deep Water (CDW) shows a warming trend. At the same time, the thermocline is shoaling, thereby increasing the potential for CDW to enter the shallow continental shelves and ... -
Sufficiently overdetermined random polynomial systems behave like semiregular ones
(Doctoral thesis, 2019-12-18)Solving systems of polynomial equations over finite fields is a fundamental problem in several areas of pure and applied mathematics. Gröbner basis methods is a family of techniques to computationally solve such systems ... -
Suicidality among children and youth in Nordic child welfare services: A systematic review
(Journal article; Peer reviewed, 2021)Existing research has established child welfare (CW) clients as a vulnerable group for developing negative life trajectories, including mental health problems, work- and education-related challenges and premature mortality. ... -
Sulfate homeostasis in Atlantic salmon is associated with differential regulation of salmonid-specific paralogs in gill and kidney
(Journal article; Peer reviewed, 2021)Sulfate (SO2−4) regulation is challenging for euryhaline species as they deal with large fluctuations of SO2−4 during migratory transitions between freshwater (FW) and seawater (SW), while maintaining a stable plasma SO2−4 ... -
SulfoSYS (Sulfolobus Systems Biology): towards a silicon cell model for the central carbohydrate metabolism of the archaeon Sulfolobus solfataricus under temperature variation
(Peer reviewed; Journal article, 2009)SulfoSYS (Sulfolobus Systems Biology) focuses on the study of the CCM (central carbohydrate metabolism) of Sulfolobus solfataricus and its regulation under temperature variation at the systems level. In Archaea, carbohydrates ... -
The summer bacterial and archaeal community composition of the northern Barents Sea
(Journal article; Peer reviewed, 2023)Climate change related alterations in the Arctic have influences on the marine ecosystems, in particular on phytoplankton bloom dynamics. Since phytoplankton blooms are the main provider of carbon sources to the microbial ... -
Summer distribution and demography of Antarctic krill Euphausia superba Dana, 1852 (Euphausiacea) at the South Orkney Islands, 2011–2015
(Peer reviewed; Journal article, 2018-11-22)We carried out a survey of Antarctic krill (Euphausia superbaDana, 1850) from 2011 to 2015 to establish a long-term, time-series dataset of distribution, abundance, and demography for this species in the South Orkney Islands ... -
Summer rains in northeast Bangladesh: Onset and triggering mechanisms
(Master thesis, 2016-06-01)The aim of this study is to shed light on convective triggering mechanisms around the onset of the summer rains in Northeast Bangladesh. We want to understand this rainfall since it has a large impact on the local climate, ...