Blar i Faculty of Science and Technology på tittel
Viser treff 3636-3655 av 7254
-
Investigation of condition based maintenance practice within Norwegian oil and gas
(Masteroppgave/UIS-TN-IKM/2012;, Master thesis, 2012)The Oil and Gas industry’s increasing demands within risk management, cost efficiency, plant availability and the technology development have led to an increased interest for monitoring of equipment for performance and ... -
Investigation of Corrosion in Geothermal Wells - A Qualitative Risk Assessment
(Masteroppgave/UIS-TN-IPT/2017;, Master thesis, 2017-06-15)The petroleum industry uses a variety of qualitative risk assessment methods for maintaining well integrity, such as well barrier schematics and barrier diagrams. Identifying barriers and using well barrier schematics are ... -
Investigation of Corrosion Resistance of Duplex, Lean Duplex and Austenitic Stainless Steels in Simulated Offshore Environment
(Masteroppgave/UIS-TN-IMBM/2019;, Master thesis, 2019-06-14)Some duplex grades are developed to replace the 300 series of austenitic stainless steels in harsh chloride applications due to superior mechanical and corrosive properties. Since the market price for nickel and molybdenum ... -
Investigation of corrosion resistance property of cold deformed (bended) duplex and super duplex stainless steel tubes
(Masteroppgave/UIS-TN-IMN/2014;, Master thesis, 2014-06-16)Cold deformation (bending) of stainless steel tubes is one of the efficient and cost effective methods to gain the required shapes of the tube that can be useful for different practical applications. Different mechanical ... -
Investigation of critical time and temperature for pitting corrosion on 316SS cladding
(Masteroppgave/UIS-TN-IMBM/2020;, Master thesis, 2020-06-30)The austenitic stainless steel 316L is a very common and low carbon stainless steel grade. 316L has great corrosion characteristics under harsh conditions such as seawater, acidic medias etc. The presence of molybdenum ... -
Investigation of crystal field, magnetic frustration and magnetization reversal effects in 4f and 3d oxides
(PhD thesis UiS;, Doctoral thesis, 2022-09)This thesis deals with the investigation of single-ion excitations, magnetic frustration, and magnetization reversal phenomena. We have employed neutron scattering, μ+SR, and computational methods for these studies. Inverse ... -
Investigation of Delayless Subband Adaptive Filters within the Unified Framework
(Masteroppgave/UIS-TN-IDE/2016;, Master thesis, 2016-06)Conventional subband adaptive filter (SAF) solved a complexity and convergence rate problem from long adaptive filter by doing adaptive filtering in subbands. The complexity is reduced because the subband adaptive filters ... -
Investigation of DNA-free genome editing in Arabidopsis thaliana with pre-assembled CRISPR-Cas9 ribonucleoproteins and transcripts.
(Master thesis, 2017-06-15)Programmable sequence-specific nucleases (SSNs) produces double stranded breaks (DSBs) in the genome in a site-specific manner. The following repair through endogenous repair systems allows targeted genome editing, which ... -
Investigation of Enhanced Biological Phosphorus Removal (EBPR) Process Performance at SNJ Wastewater Treatment Plant (IVAR)
(Masteroppgave/UIS-TN-IKBM/2019;, Master thesis, 2019-06-15)This study has investigated the efficiency of phosphorus (P) removal and optimization the function of the Enhanced Biological Phosphorus Removal (EBPR) at SNJ (Sentralrenseanlegg Nord-Jæren), owned by IVAR (Interkommunalt ... -
Investigation of gas composition on production performance of J-shaped gas-lift well
(Master thesis, 2014-06-16)The J-shaped gas-lift well showed complex dynamic phenomena. The downward inclination of the J-shaped well introduces periodic waves over time as a result of mixing gas and liquid. This behavior introduces periodic ... -
Investigation of Geomechanical Effects and Other Controlling Parameters on Shale Gas Production
(Masteroppgave/UIS-TN-IEP/2018;, Master thesis, 2018-06)Shale gas reservoirs are mainly characterized by their low matrix permeability, ranging from sub-nanodarcies to tens of microdarcies, which makes the economic production of these reservoirs rare without needing artificial ... -
Investigation of glitches induced by single-crystal diamond compound refractive lenses based on crystal orientation
(Peer reviewed; Journal article, 2019)Single-crystal diamond is considered as an ideal material for compound refractive lenses (usually abbreviated to “CRLs”) mainly due to its stability when bathed in strong X-ray radiation. Since CRLs come into operation by ... -
Investigation of Influence of Adjustments in Cyclist Arm Position on Aerodynamic Drag Using Computational Fluid Dynamics
(Peer reviewed; Journal article, 2020-06)In professional cycling, even small adjustments in position could mean that valuable seconds are gained over the course of a time-trial race. This study investigates the influence of arm position on the aerodynamic drag ... -
Investigation of Lactam- Based Kinetic Hydrate Inhibitors and the Synergetic Effect of Solvents
(PhD thesis UiS;, Doctoral thesis, 2022)Gas hydrate formation in flow lines is of notorious concern for the oil and gas industry, and it only gets bigger because of the never-ending pursuit of oil and gas compels the industry into deeper and colder waters. Gas ... -
Investigation of Leakage Paths in Well Abandonment
(Masteroppgave/UIS-TN-IPT/2016;, Master thesis, 2016-06)A large number of wells will have to be abandoned at the NCS and around the world. NORSOK D-010 states that a well that is permanently abandoned shall be abandoned with an eternal perspective and with zero leakage [1]. ... -
Investigation of Material Property changes in HSLA Steel due to Weld Proximity
(Masteroppgave/UIS-TN-IMBM/2019;, Master thesis, 2019-09-15)Standards and specifications apply a rule of thumb when determining the distance of two adjacent weld joints, but they rarely give any clear technical justification for the predetermined values. It is vital to understand ... -
Investigation of materials which reduce CO2 in long term.
(Bachelor thesis, 2021)About one quarter of global energy use is for production of materials. The more efficient we are in the use of these materials, the better it is for the long-term reduction of CO2 and other GHG emissions. Concrete is the ... -
Investigation of mechanical properties of false banana/glass fiber reinforced hybrid composite materials
(Peer reviewed; Journal article, 2020)The objective of the work presented in this article is to investigate the mechanical properties of false banana/glass fiber reinforced hybrid composite materials at different fiber volume fractions and orientation of hybrid ... -
Investigation of mechanical property of aplite-based geopolymer for plug and abandonment
(Masteroppgave/UIS-TN-IPT/2016;, Master thesis, 2016-06)Historically and up to date, ordinary Portland cement (OPC) or a slight variation is the most widely used material for permanent Plug & Abandonment operation. However, there are several challenges related to cement usage. ... -
Investigation of necessary subsea structure modifications prior to installation of new offloading system at Gullfaks
(Masteroppgave/UIS-TN-IKM/2012;, Master thesis, 2012)Due to the extension of the Gullfaks license, Statoil needs to perform several upgrades to systems to satisfy today’s regulations. Today`s system consist of two large single point moored offloading buoys, SPM 1 and SPM ...