Browsing NTNU Open by Title
Now showing items 70481-70500 of 100611
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Pipeline Integrity Assessment of Dent with Gouge after Trawling Impact
(Master thesis, 2017)Damage to pipelines from interaction with trawler-gear affects the long-term integrity of the pipeline, and interference from trawling-equipment on subsea pipelines is a relatively common occurrence. This thesis looks on ... -
Pipeline Liquid Control using Nonlinear MPC and OLGA: Optimal Utilization of Available Liquid Buffer Volume during Pipeline Transients
(Master thesis, 2007)Pipelines with multiphase flow will exhibit large and highly nonlinear liquid rates during transients caused by changes in production rate. This requires either a large separator (slug catcher) downstream, capable of ... -
Pipeline Pressure Drop in Heavy Oil Production
(Master thesis, 2014)Increased energy demand and declining conventional oil production initiated the interest in unconventional resources, such as heavy oil and bitumen. Their potential is huge, as they make up 70 % of the world s discovered ... -
Pipeline Response to Trawl Pull-over
(Master thesis, 2010)Structural integrity of production pipelines with small diameter is analyzed considering large lateral displacements due to interaction loads from trawl pull-over. The offshore standard provided by Det Norske Veritas, ... -
Pipeline Walking of High Pressure/Temperature Flowlines
(Master thesis, 2013)The offshore pipeline industry are facing more complex design challenges as the oiland gas industry moves into deeper water in search for hydrocarbons. One of thesechallenges are related to high pressure/high temperature ... -
Pipelines and politics : the European Union and natural gas : more Norway, less Russia?
(Master thesis, 2015) -
Pir II - an everyday urban waterfront
(Master thesis, 2017) -
Pistachio‐Shuck‐Like MoSe2/C Core/Shell Nanostructures for High‐Performance Potassium‐Ion Storage
(Journal article; Peer reviewed, 2018)Potassium‐ion batteries (KIBs) have recently attracted intensive attention because of the abundant potassium resources and their low cost and high safety. However, the major challenge faced by KIBs lies in the lack of ... -
Piston Pin Testing
(Master thesis, 2016)This thesis addresses a study undertaken to develop a finite element model and perform quasi-static tests. The test is to simulate the piston and connecting rod execute a pressure force on the piston pin in a Honda CRF250F ... -
Pitched unventilated wood frame roof with smart vapour barrier – field measurements
(Peer reviewed; Journal article, 2021)Unventilated wood-frame roofs may provide smaller roof thickness and less material use compared to conventional unventilated roofs with all the thermal insulation above the load bearing structure. Unventilated roofs are, ... -
Pitfalls with the "chest compression-only" approach: the challenge of an unusual cause
(Journal article; Peer reviewed, 2010)Chest compression-only (CC-only) is now incorporated in the Norwegian protocol for dispatch guided CPR (cardiopulmonary resuscitation) in cardiac arrest of presumed cardiac aetiology. We present a case that is unique and ... -
Pitting and Crevice Corrosion of Stainless Steel under Offshore Conditions
(Master thesis, 2012)AISI 316/316L has traditionally been used in offshore topside environments when operating under low temperatures. It has been observed that the AISI 316/316L piping suffer from severe attacks of pitting and crevice corrosion ... -
Pitting and Crevice Corrosion of Super Duplex Stainless Steels in Seawater - Effect of Tungsten
(Master thesis, 2015)The need for low cost and lighter materials with higher mechanical and chemical properties has lead to more frequently usage of SDSS because of their increased mechanical and superior corrosion properties compared to other ... -
Pitting corrosion identification approach based on inverse finite element method for marine structure applications
(Peer reviewed; Journal article, 2023)This paper presents a state-of-the art inverse finite element method (iFEM) for full-field, real-time structural health monitoring (SHM) of corroding structures. The study focuses on detecting the location and identifying ... -
Pitting corrosion of additive manufactured AISI 316L and Alloy 718
(Master thesis, 2020)Additivprodusert stål har gunstige produksjonsaspekter i både et effektivt og økonomisk syn sammenlignet med tradisjonelle produksjonsmetoder. Før tradisjonelt produserte korrosjonsbestandige legeringer blir skiftet ut med ... -
Pitting Corrosion of Super Duplex Stainless Steel - Effect of Isothermal Heat Treament
(Master thesis, 2016)Super duplex stainless steels (SDSS), with a chromium content of 25 wt$\%$, contain a duplex structure which consists of ferrite and austenite, and have a pitting resistance equivalent number (PREN) equal or higher than ... -
Pitting Corrosion of Super Duplex Stainless Steel - Effect of Tungsten and Isothermal Heat Treatments
(Master thesis, 2017)Duplex stainless steels (DSS) and super duplex stainless steels (SDSS) can be described as austenitic-ferritic stainless steels with a chromium content of 22 and 25 %, respectively. Because of their good combination of ... -
Pitting on Carbon Cathodes in Aluminium Electrolysis Cells
(Journal article; Peer reviewed, 2018)Uneven cathode wear is one of the key challenges for the lifetime of aluminium electrolysis cells. Here we report on autopsy of several potlinings with focus on the surface morphology of the carbon cathodes. The surface ... -
Pituitary adenoma and headache
(Master thesis, 2015)Background: Although headache and pituitary adenoma are two prevalent conditions that may coexist, it has also been postulated that pituitary adenomas may cause secondary headaches that resemble primary headaches. ... -
Pituitary adenoma and non-acute headache: is there an association, and does treatment help?
(Journal article; Peer reviewed, 2016)Objective Headache is a controversial indication for treatment of pituitary adenoma. We studied the possible relationship between pituitary adenomas and headache as well as the symptomatic effects of treatment. Met ...