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Effect of different surfactant structures on the brine-crude oil and brine-alkane interface in different aqueous environments.
(Master thesis, 2017-06-16)In producing oil fields, both the production rate and ultimate recovery from the field can be enhanced by injection of chemicals into the reservoir formation. To optimise the commercial benefits, it is important to understand ... -
The effect of energetic electron precipitation on the nitric oxide density in the lower thermosphere
(Doctoral thesis, 2007-02-09) -
Effect of Energetic Electron Precipitation on the Northern Polar Vortex: Explaining the QBO Modulation via Control of Meridional Circulation
(Peer reviewed; Journal article, 2019)Energetic electron precipitation (EEP) affects the high‐latitude middle atmosphere by producing NOX compounds that destroy ozone. Earlier studies have shown that in the wintertime polar stratosphere, increased EEP enhances ... -
The Effect of Femtosecond Laser Irradiation and Plasmon Field on the Degree of Conversion of a UDMA-TEGDMA Copolymer Nanocomposite Doped with Gold Nanorods
(Journal article; Peer reviewed, 2022)In this work, the effects of femtosecond laser irradiation and doping with plasmonic gold nanorods on the degree of conversion (DC) of a urethane dimethacrylate (UDMA)–triethylene glycol dimethacrylate (TEGDMA) nanocomposite ... -
The effect of fluid viscosity and geometry on hydrocyclone performance
(Master thesis, 2015-02-02)Hydrocyclones have been widely used throughout industries for separating sand particles of various sizes and shape from fluids. Producing petroleum resources includes amounts of water, which contain different amounts of ... -
The Effect of Fluid Viscosity on Hydrocyclone Performance: Design and Commissioning of an Experimental Rig and Results
(Master thesis, 2011-06-30)Hydrocyclones are used in the process industry for a variety of applications. The product streams from the wells in the oil and gas industry include produced sand, which have to be removed as it interferes with control and ... -
Effect of Free Water Elimination on Diffusion Indices in Healthy Volunteers and Patients with Multiple Sclerosis
(Master thesis, 2018-11-08)Diffusion tensor imaging (DTI) is a technique in magnetic resonance imaging (MRI) that can be used to image the brain microstructure beyond the resolution that is achievable using conventional imaging. By utilizing DTI, it ... -
Effect of ICME-Driven Storms on Field-Aligned and Ionospheric Currents From AMPERE and SuperMAG
(Journal article; Peer reviewed, 2022)This study investigates the field-aligned currents (FACs) and ionospheric equivalent currents for interplanetary coronal mass ejection (ICME)-driven storms by considering 45 events with a minimum Dst ≤ −50 nT. The FACs and ... -
Effect of Implementing Three-Phase Flow Characteristics and Capillary Pressure in Simulation of Immiscible WAG
(Journal article, 2008-04-30)The effect of including a three-phase representation of the flow parameters and capillary pressure has been investigated using a black oil simulator. The simulation approaches include the complexity of three-phase flow, ... -
Effect of Mineral Composition on Transverse Relaxation Time Distributions and MR Imaging of Tight Rocks from Offshore Ireland
(Journal article; Peer reviewed, 2020)In this paper, we investigate the effect of magnetic field strength on the transverse relaxation time constant (T2) in six distinct core plugs from four different rock types (three sandstones, one basalt, one volcanic tuff ... -
Effect of relative permeability hysteresis on reservoir simulation of underground hydrogen storage in an offshore aquifer
(Journal article; Peer reviewed, 2023)Underground hydrogen storage (UHS) in porous media is proposed to balance seasonal fluctuations between demand and supply in an emerging hydrogen economy. Despite increasing focus on the topic worldwide, the understanding ... -
The Effect of Solid Inhibitors on Hydrogen-air Combustion
(Journal article; Peer reviewed, 2022)The use of hydrogen as an energy carrier is a promising solution for enabling the transition towards increased use of renewable energy sources in the global energy mix. However, hydrogen-air mixtures are highly reactive, ... -
Effect of ultraviolet radiation on phytoplankton photosynthesis measured using fiber-optical oxygen sensors.
(Master thesis, 2009-12-08)Since the discovery of the Antarctic ozone hole' many studies have been conducted to determine the effect of UV radiation on photosynthetic rate of phytoplankton. It is accepted now that increased levels of UV radiation ... -
Effect of Water Mist Suppression System in Engine Room: Case Study of Fire in The Cruise Liner MS Nordlys
(Master thesis, 2014-06-02)In the 1980s ozone layer depleting was a major concern for the environmentalists. Halon was used as a fire extinguishing agent until it was banned in the early 1990's. The industry was therefore forced to find other solutions ... -
Effective screening of medium-assisted van der Waals interactions between embedded particles
(Journal article; Peer reviewed, 2021)The effect of an implicit medium on dispersive interactions of particle pairs is discussed, and simple expressions for the correction relative to vacuum are derived. We show that a single point Gauss quadrature leads to ... -
Effects of an Arctic under-ice bloom on solar radiant heating of the water column
(Peer reviewed; Journal article, 2017-01)The deposition of solar energy in the upper Arctic Ocean depends, among other things, on the composition of the water column. During the N-ICE2015 expedition, a drift in the Arctic pack ice north of Svalbard, an under-ice ... -
Effects of dead time losses on terrestrial gamma ray flash measurements with the Burst and Transient Source Experiment
(Peer reviewed; Journal article, 2010-05-05) -
Effects of enhanced downwelling of NOx on Antarctic upper-stratospheric ozone in the 21st century
(Journal article; Peer reviewed, 2021)Ozone is expected to fully recover from the chlorofluorocarbon (CFC) era by the end of the 21st century. Furthermore, because of anthropogenic climate change, a cooler stratosphere decelerates ozone loss reactions and is ... -
Effects of methane hydrates on two-phase relative permeability in sandstone: Numerical simulation of laboratory experiments
(Journal article; Peer reviewed, 2022)To identify the challenges and limitations in measuring and modelling gas relative permeability in hydrate bearing sandstone, we simulate a series of experiments. Experimental and numerical results are used to examine the ... -
Effects of motion correction, sampling rate and parametric modelling in dynamic contrast enhanced MRI of the temporomandibular joint in children affected with juvenile idiopathic arthritis
(Journal article; Peer reviewed, 2021)The temporomandibular joint (TMJ) is typically involved in 45–87% of children with Juvenile Idiopathic Arthritis (JIA). Accurate diagnosis of JIA is difficult as various clinical tests, including MRI, disagree. The purpose ...