Browsing Fakultet for naturvitenskap (NV) by Title
Now showing items 12357-12376 of 12479
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Wax-Inhibitor Interactions Studied by Isothermal Titration Calorimetry and Effect of Wax Inhibitor on Wax Crystallization
(Journal article; Peer reviewed, 2017)Isothermal titration calorimetry is applied to investigate the interactions of polymeric pour-point depressants (PPDs) or asphaltenes with macrocrystalline wax in a model oil system. This represents a novel approach to ... -
“We learn it [mathematics] at school so one thinks that one will use it …”: Learners’ beliefs about relevance and importance of learning mathematics.
(Journal article; Peer reviewed, 2023)Denne artikkelen viser at når skoleledere og lærere samhandler i et regionalt utviklingsprosjekt som forutsetter bruk av eksterne kunnskapsressurser som kartleggingsdata og kompetansepakker, forholder de seg til ... -
Wear of carbon cathode lining in aluminium electrolysis cell: The effect of rotation speed in laboratory test cell
(Master thesis, 2014)The aluminium smelters are continually trying to increase their production either by designing high amperage cells or increasing the amperage on available cell designs. The service life for aluminium reduction cells is ... -
Wear of Carbon Refractory Materials in Silicon Furnaces
(Master thesis, 2016)The goal of this thesis was to investigate the internal morphology of different types of lining prepared with different installation techniques and different binders, and to see how the internal morphology affects the ... -
Weather affects temporal niche partitioning between moose and livestock
(Journal article; Peer reviewed, 2017)Co-existing species at the same trophic level often segregate with respect to diet, habitat use, or spatial distribution, reducing their direct competition for resources. However, temporal patterns in species-specific ... -
Weathering Plastics as a Planetary Boundary Threat: Exposure, Fate, and Hazards
(Peer reviewed; Journal article, 2021)We described in 2017 how weathering plastic litter in the marine environment fulfils two of three criteria to impose a planetary boundary threat related to “chemical pollution and the release of novel entities”: (1) ... -
Weddell-Scotia Confluence Effect on the Iron Distribution in Waters Surrounding the South Shetland (Antarctic Peninsula) and South Orkney (Scotia Sea) Islands During the Austral Summer in 2007 and 2008
(Journal article; Peer reviewed, 2019)An oceanographic survey around the South Shetland Islands (SSI) and the South Orkney Islands (SOI) was conducted during January 2007 and February 2008, respectively, as part of the United States Antarctic Marine Living ... -
Weed to Feed: From Seaweed to Sustainable Microbial Feedstock
(Master thesis, 2023)Nye og mer bærekraftige løsninger kreves i industriell sammenheng for å konservere ressurser som verdensbefolkningen allerede er svært avhengig av, som for eksempel dyrkbar jord. I løpet av dette prosjektet har tare blitt ... -
Weighting of Celestial and Terrestrial Cues in the Monarch Butterfly Central Complex
(Peer reviewed; Journal article, 2022)Monarch butterflies rely on external cues for orientation during their annual long-distance migration from Northern US and Canada to Central Mexico. These external cues can be celestial cues, such as the sun or polarized ... -
Weld thermal simulation of API 5CT L80 grade steel
(Peer reviewed; Journal article, 2021)The microstructure and mechanical properties of an API 5CT L80 casing grade steel (0.24C 0,4Si 1.4Mn CrNiCu) have been studied after performing weld thermal simulations (with and without subsequent tempering) applying a ... -
Welding and Mechanical Testing of Aluminium Alloys for use in Constructions
(Master thesis, 2023)Målet med denne masteroppgaven er å produsere Al-Si-Mg legeringer til bruk i store konstruksjoner, samtidig som styrken ikke skal bli redusert i noen særlig grad som følge av sveising. Metallplater har gått gjennom ulike ... -
Wet Chemical Preparation and Characterisation of Nanocrystalline and BulkYttrium Manganite
(Master thesis, 2009) -
Wet Chemical Synthesis of Graphene for Battery Applications
(Master thesis, 2014)In this thesis, an improved Hummers method is used to produce graphene oxide, while thermal treatment has been used as the reduction process to form reduced graphene oxide. This modified version of Hummers method differs ... -
Wet Chemical Synthesis of Materials for Intermediate Band Solar Cells
(Master thesis, 2011)The economical feasibility of commercial, single-junction solar cells is limited by high costs and limited efficiencies. New solar cell concepts and materials are sought to decrease the production costs and increase the ... -
Wet chemical synthesis of silicon nanoparticles and phosphorescent oxides for white light emitting diodes
(Doktoravhandlinger ved NTNU, 1503-8181; 2014:209, Doctoral thesis, 2014) -
Wet Drilled Cuttings Bed Rheology
(Peer reviewed; Journal article, 2021)The cuttings transport efficiency of various drilling fluids has been studied in several approaches. This is an important aspect, since hole cleaning is often a bottleneck in well construction. The studies so far have ... -
Wet-chemical deposition of silicon quantum dots for enhanced solar cell efficiency
(Master thesis, 2011)Silicon quantum dots were synthesised wet-chemically by three different methods based on reduction of silicon tetrachloride with the reduction agents potassium naphthalide, sodium cyclopentadiene and the alkalide of ... -
Wet-granular rheology to measure cuttings-bed strength
(Journal article; Peer reviewed, 2021) -
Wettability effect on oil recovery using rock-structured microfluidics
(Peer reviewed; Journal article, 2022)Surface wettability has a crucial impact on drop splashing, emulsion dynamics, slip flow for drag reduction, fluid–fluid displacement, and various microfluidic applications. Targeting enhanced oil recovery (EOR) applications, ... -
Wettability of cokes by Fe-Mn melt
(Peer reviewed; Journal article, 2020)Four metallurgical cokes were heat treated at 1250 °C to 1550 °C in argon atmosphere. The influence of heat treatment on the microstructure of metallurgical cokes was characterized using X-ray diffraction and Raman ...