Browsing Faculty of Science and Technology by Title
Now showing items 3853-3872 of 7037
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Loss of Integrity on Mooring Lines – Causes and Consequences
(Masteroppgave/UIS-TN-IKM/2016;, Master thesis, 2016-06-16)In the history of offshore industry, position keeping has been an essential part for allowing operations to be performed, and production to be maintained. This is often done by connecting mooring lines between the vessel ... -
Loss of LEUCINE CARBOXYL METHYLTRANSFERASE 1 interferes with metal homeostasis in Arabidopsis and enhances susceptibility to environmental stresses
(Peer reviewed; Journal article, 2022)The biochemical function of LEUCINE CARBOXYL METHYLTRANSFERASE 1 (LCMT1) is to transfer a methyl group from the methyl donor S-adenosylmethionine (SAM) to the catalytic subunits of PROTEIN PHOSPHATASE 2A (PP2Ac), PP4 and ... -
Lost circulation experimental study in oil based mud and analyzing experimental data
(Masteroppgave/UIS-TN-IPT/2012;, Master thesis, 2012)The problem of lost circulation have for a long time occurred during the drilling operation. During the drilling through induced and natural fractures, huge drilling fluid losses lead to the higher operational expenses. ... -
Low Carbon Enhanced Oil Recovery Solution for Carbonates
(PhD thesis UiS;, Doctoral thesis, 2024)Oil production from mature fields causes significant CO2 emissions, primarily linked to the management and processing of injected and produced water. As fields age, the demand for injected water increases, increasing both ... -
Low cost deep water wells
(Masteroppgave/UIS-TN-IKM/2012;, Master thesis, 2012)A major cost-factor of drilling deep water wells today is associated with the high day rates of the larger rigs capable of drilling in such depths. Most subsea completions today are based on the 18-3/4” wellheads system. ... -
Low Pressure Adsorption of Carbon Dioxide and Nitrogen on Activated Carbon and Zeolite 13X
(Master thesis, 2023)Several gas separation techniques have been used throughout the year, however the most cost effective and energy efficient gas separation process to date is that of adsorption. Adsorption of carbon dioxide from flue or ... -
Low salinity effect after sea water flooding in sandstone reservoirs
(Masteroppgave/UIS-TN-IPT/2012;, Master thesis, 2012)Clays are the main wetting minerals and have permanently negative surface charges. The negative charges must be balanced by; active cat ions, polar components or H+. pH changes is observed in the effluent by flooding in ... -
Low salinity eor-potential for Yme at reservoir conditions : an experimental study
(Masteroppgave/UIS-TN-IØRP/2012;, Master thesis, 2012-06-14)The composition of the water injected into a reservoir affects the oil recovery. Injecting water with low salinity (LowSal) has been proved by several studies to improve the water wetness of the rock and thereby increase ... -
Low salinity water flooding as EOR method in chalk reservoir
(Masteroppgave/UIS-TN-IPT/2013;, Master thesis, 2013-11-11)During the last few years studies of the low salinity water flooding effect, in general, have demonstrated an additional oil recovery associated with flooding oil reservoirs with low salinity water. Numerous theories ... -
Low temperature thermomechanical treatment of corrosion resistant alloys
(Masteroppgave/UIS-TN-IKM/2013;, Master thesis, 2013)Wear deteriorates materials and are a widespread problem in many areas of industry. To some extent, all physical materials experience wear in one form or another by moving gas, particles, fluids or a combination of these ... -
Low Z-4OHtam concentrations are associated with adverse clinical outcome among early stage premenopausal breast cancer patients treated with adjuvant tamoxifen
(Peer reviewed; Journal article, 2020)Low steady‐state levels of active tamoxifen metabolites have been associated with inferior treatment outcomes. In this retrospective analysis of 406 estrogen receptor‐positive breast cancer (BC) patients receiving adjuvant ... -
Low- versus high-resolution assessment of reservoir compartmentalization in the Wisting field, Norwegian Barents Sea.
(Master thesis, 2021)Wisting is Norway’s northernmost oil field under development. With ~500 mmboe in shallow marine to fluvial Upper Triassic to Middle Jurassic reservoirs, which are highly faulted and just 250-300 m below sea bottom, this ... -
Low-concentration salting of cod loins: The effect on biochemical properties and predicted water retention during heating
(Journal article; Peer reviewed, 2019-10)Low levels of salt are frequently used to increase flavor and water retention in cod. This alters the biochemical properties of cod during heating. In this paper, properties needed to mathematically model moisture transfer ... -
A Low-Cost Wireless Body Area Network for Human Activity Recognition in Healthy Life and Medical Applications
(Peer reviewed; Journal article, 2023)Moved by the necessity, also related to the ongoing COVID-19 pandemic, of the design of innovative solutions in the context of digital health, and digital medicine, Wireless Body Area Networks (WBANs) are more and more ... -
Low-frequency reflection seismic and direct hydrocarbon indication
(Masteroppgave/UIS-TN-IPT/2014;, Master thesis, 2014-06)Low-frequency reflection seismic has been used as an indicator to detect hydrocarbons in petroliferous reservoirs. A number of spectral decomposition methods have been developed to derive seismic from time to frequency ... -
Low-frequency seismic analysis and direct hydrocarbon indicators
(Masteroppgave/UIS-TN-IPT/2016;, Master thesis, 2016-06)Low-frequency seismic analysis has been used as a possible direct indicator of the presence of hydrocarbons in reservoirs. Laboratory examples, synthetic studies and field examples in oil and gas exploration suggest ... -
Low-temperature anaerobic wastewater treatment by granulated biomass
(PhD thesis UiS;, Doctoral thesis, 2022-05)In this study, long-term operation of up-flow anaerobic sludge blanket (UASB) system treating real municipal wastewater at decreasing temperatures (25, 16, 12, 8.5, 5.5, and 2.5 °C) and variable organic loading rates from ... -
Low-temperature carbonated water injection for enhanced oil recovery in chalk
(Master thesis, 2023)The oil industry is still an essential contributor to meeting the continuously increasing global energy demands. As the world looks towards reaching carbon neutrality, new approaches and innovative ideas have never been ... -
A LSSVR-PSO machine learning model for the estimation of reservoir porosity from petrophysical well logs
(Masteroppgave/UIS-TN-IEP/2020;, Master thesis, 2020-06-10)Reservoir porosity is a key parameter in the reservoir evaluation and geomechanics. To obtain accurate measurement of porosity can be time-consuming and expensive by core sampling or applying various well logging tools. ... -
Luftinnføring i betong med Portland-flygeaske sementer – innvirkning av sementegenskaper
(Masteroppgave/UIS-TN-IKM/2015;, Master thesis, 2016-01-15)For å lage en frostbestandig betong tilsettes luftinnførende stoff. Dette danner et finfordelt luftporesystem som kan ta hånd om volumøkningen til vannet når det fryser. Å oppnå kravene til luftinnhold kan være krevende. ...