Blar i NTNU Open på tittel
Viser treff 68666-68685 av 100662
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Particle image velocimetry measurements in the vaneless space of a model Francis turbine under steady state operation
(Peer reviewed; Journal article, 2021)Two-dimensional, two component particle image velocimetry (PIV) measurements of the guide-vane wake and vaneless space for a high head Francis model turbine are presented. Measurements have been carried out with a fixed ... -
Particle interaction potential parameters and effect of copolymer superplasticizer in cement paste: an overview
(Chapter, 2022)The rheological properties of fresh cement-based materials determine their applicability for various types of use such as extrusion, 3D printing, self-compacting (SCC) placement, spraying, pumping, etc. Proper control of ... -
Particle Mobility in Mucus: Role of Surface Interactions and Use of G-blocks
(Master thesis, 2012)The mucus layers on the internal surfaces of the human body serve as an important barrier against foreign material, but it also create restrictions regarding drug delivery. Discovering methods to overcome this barrier would ... -
Particle Production in Gravitational Fields
(Master thesis, 2013)In this thesis, we discuss the phenomenon of particle production in gravitational fields. We present the general framework in flat Friedmann-Robertson-Walker spacetimes and apply it to an asymptotically static model in two ... -
Particle scale reservoir mechanics
(Doktoravhandlinger ved NTNU, 1503-8181; 116, Doctoral thesis, 2002)When a petroleum reservoir is produced, the mechanical state of stress is changing, which leads to alteration of rock mechanical behaviour, of fluid flow, and of geophysical parameters. Numerical schemes have been developed ... -
Particle sedimentation detection using anultrasonic cement analyser
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Particle segregation in turbulent Couette-Poiseuille flow with vanishing wall shear
(Journal article, 2017)Inertial particles dispersed in wall-bounded flows in pipes and channels are known to accumulate close to the walls. The segregation ability depends greatly on the inertia-selection effects of the near-wall quasi-coherent ... -
Particle Size Control for Functionalization of Iron Oxide Nanoparticles with Potential Applications in Diagnostics
(Master thesis, 2022)Liten gjennomsnittlig diameter sammen med smal partikkelstørrelsesfordeling er nødvendig for å gi en tilfredsstillende magnetisk metningsytelse av jernoksid nanopartikler for diagnostiske anvendelser. Bruken av polyvinylpyrrolidon ... -
Particle Size Distribution and Specific Surface Area Measurements with X-ray SediGraph on Filler, Cement and Fly Ash
(Master thesis, 2017)The focus of this thesis is producing the Particle Size Distribution (PSD) of filler, cement and fly ash using X-ray sedimentation technique. The Micromeritics SediGraph III Plus (5125) applies the sedimentation theory to ... -
Particle suspensions in evolving Taylor-Green vortex flow
(Doctoral theses at NTNU;2022:319, Doctoral thesis, 2022)Particle-laden flow is a ubiquitous phenomenon, observed in both natural and engineering settings. Most of the studies have focused on studying particles in standard flow systems, such as homogeneous isotropic turbulence ... -
Particle swarm optimisation in development of component families using classification and coding system: a case study in an Indian manufacturing firm
(Journal article; Peer reviewed, 2012)Abstract: Component/part family identification is an NP class problem in the extent of group technology (GT). In preceding literature it has been evidenced that part family identification techniques are ordinarily grounded ... -
Particle Swarm Optimization for Dynamic Risk-Aware Path Following for Autonomous Ships
(Peer reviewed; Journal article, 2022)This work presents the use of particle swarm optimization (PSO) for dynamic risk-aware path following, or waypoint re-planning during autonomous surface navigation in a maritime environment with polygonal grounding obstacles. ... -
Particle Swarm Optimization Tuning of Modular Multilevel Converters in a Time-Invariant Framework
(Chapter, 2019)This work investigates the Particle Swarm Optimization (PSO) algorithm as a tool to tune the control parameters of a Modular Multilevel Converter (MMC) in a single-terminal HVdc configuration. More precisely, due to its ... -
Particle-based Powder-snow Avalanche Simulation Using GPU
(Master thesis, 2011)The main focus of this thesis was the simulation of a powder-snow avalanche flow. The simulation were implemented using the particle-based simulation solution SPH, from a mathematical model describing powder-snow flow ... -
Particles in wall turbulence
(Doktoravhandlinger ved NTNU, 1503-8181; 2012:15, Doctoral thesis, 2012)The overall objective of this doctoral thesis is to investigate how tiny particles are dispersed in a turbulent channel flow and how the fluid turbulence is modulated due to the presence of particles. Both spherical and ... -
Particulate emissions from electrolysis cells
(Journal article; Peer reviewed, 2011)In the dry cleaning of the exhaust gas from the aluminium cells impurities are accumulated in the finer fractions of secondary alumina from the dry scrubbers. The present work describes new methods for the determination ... -
Particulate Iron Bioavailability to Phytoplankton in Antarctic and Arctic Waters: Effects of Ocean Acidification and the Organic Ligand EDTA
(Master thesis, 2021)Particulate iron (PFe) usually is not considered as a bioavailable iron fraction to phytoplankton. In this study we tested the bioavailability of one PFe species, goethite (α-FeO(OH)), to phytoplankton community in Southern ... -
Particulate matter emission characteristics from diesel engines operating on conventional and alternative marine fuels
(Doktoravhandlinger ved NTNU, 1503-8181; 2012:341, Doctoral thesis, 2012)The awareness of adverse health effects associated with diesel aerosol emissions has generated a great public and academic interest in studying various aerosol-producing sources. While automotive industry has achieved ... -
Particulate matter released from Austre Brøggerbreen; a study on the potential impact on chemical conditions in Bayelva and Kongsfjorden
(Master thesis, 2021)En direkte konsekvens av stigene temperaturer i Arktisk grunnet globale klimaendringer, er smelting av isbreer. Isbreen Austre Brøggerbreen, nærliggende Ny-Ålesund på Svalbard, har hatt den største nedgangen i massebalanse ... -
Particulate matter-attributable mortality and relationships with carbon dioxide in 250 urban areas worldwide
(Journal article; Peer reviewed, 2019)Urban air pollution is high on global health and sustainability agendas, but information is limited on associated city-level disease burdens. We estimated fine particulate matter (PM2.5) mortality in the 250 most populous ...