Browsing SINTEF Open by Author "Davies, Emlyn John"
Now showing items 1-18 of 18
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Atlantic cod (Gadus morhua) embryos are highly sensitive to short-term 3,4-dichloroaniline exposure
Hansen, Bjørn Henrik; Farkas, Julia; Piarulli, Stefania; Vicario, Silvia; Kvæstad, Bjarne; Williamson, David Roddan; Sørensen, Lisbet; Davies, Emlyn John; Nordtug, Trond (Peer reviewed; Journal article, 2021)3,4-dichloroaniline (3,4-DCA) is one of the most widely produced anilines world-wide, used in plastic packaging, fabrics, pharmaceuticals, pesticides, dyes and paints as well as being a degradation product of several ... -
Automated morphometrics on microscopy images of Atlantic cod larvae using Mask R-CNN and classical machine vision techniques
Kvæstad, Bjarne; Hansen, Bjørn Henrik; Davies, Emlyn John (Peer reviewed; Journal article, 2022)Measurements of morphometrical parameters on i.e., fish larvae are useful for assessing the quality and condition of the specimen in environmental research or optimal growth in the cultivation industry. Manually acquiring ... -
Automatic determination of heart rates from microscopy videos of early life stages of fish
Nepstad, Raymond; Davies, Emlyn John; Altin, Dag; Nordtug, Trond; Hansen, Bjørn Henrik (Journal article; Peer reviewed, 2017-08-29)Toxic effects of organic hydrophobic contaminants include impacts on fish heart rate (HR) and cardiac functioning. Thus, in ecotoxicology as well as aquaculture and even medicine, fish heart functioning plays an important ... -
Biodegradation of Dispersed Oil in natural Seawaters from Western Greenland and a Norwegian fjord
Brakstad, Odd Gunnar; Davies, Emlyn John; Ribicic, Deni; Winkler, Anika; Brönner, Ute; Netzer, Roman (Journal article; Peer reviewed, 2018-07-25)With increasing oil exploration, production and transportation in the Arctic, predictions of the fate of spilled oil become important, including oil compound biodegradation. The use of chemical dispersants may result in ... -
Comparison of Meso Scale Subsea gas Release With Multiphase Eulerian-Lagrangian CFD Model
Skjetne, Paal; Olsen, Jan Erik; Davies, Emlyn John; Leirvik, Frode; Krause, Daniel Franklin; Eidnes, Grim (Chapter, 2017-05-25)We compare the observed dynamics of subsea starting plumes with multiphase computational fluid dynamics (CFD) simulations. In the event of subsea loss of containment of either natural gas or carbon dioxide it is important ... -
Effects of mine tailing exposure on early life stages of cod (Gadus morhua) and haddock (Melanogrammus aeglefinus)
Farkas, Julia; Nordtug, Trond; Svendheim, Linn Hjelmeland; D Amico, Elettra; Davies, Emlyn John; Ciesielski, Tomasz Maciej; Jensen, Bjørn Munro; Kristensen, Torstein; Olsvik, Pål Asgeir; Hansen, Bjørn Henrik (Peer reviewed; Journal article, 2021)Mining and processing of minerals produce large quantities of tailings as waste. Some countries, including Norway, allow disposal of mine tailings in the sea. In this study we investigated the impacts of tailings from a ... -
The hidden influence of large particles on ocean colour
Davies, Emlyn John; Basedow, Sünnje Linnéa; McKee, David (Peer reviewed; Journal article, 2021)Optical constituents in the ocean are often categorized as water, phytoplankton, sediments and dissolved matter. However, the optical properties of seawater are influenced, to some degree, by scattering and absorption by ... -
In situ characterisation of complex suspended particulates surrounding an active submarine tailings placement site in a Norwegian fjord
Davies, Emlyn John; Nepstad, Raymond (Journal article; Peer reviewed, 2017-11)Suspended particle measurements over flood and ebb transects of a Norwegian fjord (Frænfjorden) with an active submarine mine tailings placement are presented. Measurements focused on characterisation of spatial variability ... -
The influences of phytoplankton species, mineral particles and concentrations of dispersed oil on the formation and fate of marine oil-related aggregates
Henry, Ingrid Annemarie; Netzer, Roman; Davies, Emlyn John; Brakstad, Odd Gunnar (Journal article; Peer reviewed, 2020-01-15)The formation and fallout of oil-related marine snow have been associated with interactions between dispersed oil and small marine particles, like phytoplankton and mineral particles. In these studies, the influences of ... -
Large-scale basin testing to simulate realistic oil droplet distributions from subsea release of oil and the effect of subsea dispersant injection
Brandvik, Per Johan; Davies, Emlyn John; Leirvik, Frode; Johansen, Øistein; Belore, Randy (Peer reviewed; Journal article, 2021)Small-scale experiments performed at SINTEF, Norway in 2011–12 led to the development of a modified Weber scaling algorithm. The algorithm predicts initial oil droplet sizes (d50) from a subsea oil and gas blowout. It was ... -
Mass transfer between bubbles and seawater
Olsen, Jan Erik; Dunnebier, Dorien; Davies, Emlyn John; Skjetne, Paal; Morud, John (Peer reviewed; Journal article, 2017)Mass transfer between bubbles and seawater is an important mechanism when determining how much gas reaches the atmosphere from gas sources at the seabed. The mass transfer coefficient is a governing parameter for the ... -
Observations of rising methane bubbles in Trondheimsfjord and its implications to gas dissolution
Olsen, Jan Erik; Krause, Daniel Franklin; Davies, Emlyn John; Skjetne, Paal (Journal article; Peer reviewed, 2019-02-13)Gas dissolution reduces the release of methane to the atmosphere from subsea sources. Being able to predict and assess the methane flux to the atmosphere requires knowledge on gas dissolution and mass transfer. This can ... -
Observations of rising methane bubbles in Trondheimsfjord and its implications to gas dissolution
Olsen, Jan Erik; Krause, Daniel Franklin; Davies, Emlyn John; Skjetne, Paal (Journal article; Peer reviewed, 2019-03-01)Gas dissolution reduces the release of methane to the atmosphere from subsea sources. Being able to predict and assess the methane flux to the atmosphere requires knowledge on gas dissolution and mass transfer. This can ... -
Prøvetaking av oljeprøver fra observasjoner ved Statfjord - Feltrapport 15-16. mai 2019 - OC2019 A-091
Leirvik, Frode; Davies, Emlyn John (SINTEF Ocean AS rapporter;OC2019 A-091, Research report, 2019-06-17)SINTEF ble kontaktet av NOFO 15.05.2019 angående observert overflateolje av tankskipet "Eagle Bergen" som på det tidspunktet gjennomførte lasting fra lastesystemet ca. 2 km fra Statfjord A plattformen. SINTEF bistod i ... -
Subsurface oil releases - Verification of dispersant effectiveness under high pressure
Brandvik, Per Johan; Davies, Emlyn John; Bradly, Cole; Storey, Chris; Leirvik, Frode (SINTEF reports;A27469, Research report, 2016-01-21)The main objective with this project was to study possible pressure dependency of droplet formation in case of a subsea blow out of oil and the effectiveness of subsea dispersant injection (SSDI). The droplet sizes ... -
The use of wide-band transmittance imaging to size and classify suspended particulate matter in seawater
Davies, Emlyn John; Brandvik, Per Johan; Leirvik, Frode; Nepstad, Raymond (Journal article; Peer reviewed, 2017-02-02)An in situ particle imaging system for measurement of high concentrations of suspended particles ranging from 30 μm to several mm in diameter, is presented. The system obtains quasi-silhouettes of particles suspended within ... -
Toward adaptive robotic sampling of phytoplankton in the coastal ocean
Fossum, Trygve Olav; Fragoso, Glaucia Moreira; Davies, Emlyn John; Ullgren, Jenny; Mendes, Renato; Johnsen, Geir; Ellingsen, Ingrid H.; Eidsvik, Jo; Ludvigsen, Martin; Rajan, Kanna (Journal article; Peer reviewed, 2019-02-13)Currents, wind, bathymetry, and freshwater runoff are some of the factors that make coastalwaters heterogeneous, patchy, and scientifically interesting—where it is challenging to resolve the spatiotemporal variation within ... -
Toward adaptive robotic sampling of phytoplankton in the coastal ocean
Fossum, Trygve Olav; Fragoso, Glaucia Moreira; Davies, Emlyn John; Ullgren, Jenny; Mendes, Renato; Johnsen, Geir; Ellingsen, Ingrid H.; Eidsvik, Jo; Ludvigsen, Martin; Rajan, Kanna (Journal article; Peer reviewed, 2019-02-20)Currents, wind, bathymetry, and freshwater runoff are some of the factors that make coastal waters heterogeneous, patchy, and scientifically interesting—where it is challenging to resolve the spatiotemporal variation within ...