Browsing Institutt for fysikk by Issue Date
Now showing items 381-400 of 2677
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Effect of room temperature storage time on precipitation in Al-Mg-Si(-Cu) alloys with different Mg/Si ratios
(Journal article; Peer reviewed, 2012)The effect of natural ageing time before artificial ageing has been investigated in four Al – Mg – Si(– Cu) alloys, with 0.4 % Mg + 0.8 % Si and 0.8 % Mg + 0.4 % Si, both with and without 0.14 at.% Cu. The precipitate ... -
Exploring possibilities in AFM studies of InAs/GaAs QDs
(Master thesis, 2012)The main focus of this master thesis work has been to image InAs emph{quantum dots} (QDs) using emph{atomic force microscopy} (AFM), to identify and evaluate various image processing methods used to estimate the volume of ... -
Constrained Hydrogel swelling in Biological Sensors: A Finite Element Method Approach
(Master thesis, 2012)Material models has been developed for anionic and/or cationic hydrogels, with a simulation framework implemented in MATLAB and the finite element software ABAQUS. The geometry of the simulations is a hemispheroidal hydrogel, ... -
Coherent Plane-Wave Compounding in Medical Ultrasound Imaging: Quality Investigation of 2D B-mode Images of Stationary and Moving Objects.
(Master thesis, 2012)Coherent plane-wave compounding is the coherent summation of several successive plane waves incident at different angles. This thesis presents results from simulations and in vitro and in vivo measurements of stationary ... -
Advanced Transmission Electron Microscopy Studies of Cobalt Fischer-Tropsch Catalysts
(Doktoravhandlinger ved NTNU, 1503-8181; 2012:216, Doctoral thesis, 2012) -
Hardness and Microstructure for Ge-Containing Al-Mg-Si-Cu alloys
(Master thesis, 2012)Four different Al-Mg-Si-Cu-Ge alloys with 0.002--0.037 at.\% germanium were heat treated to the T6 condition and over-aged at 250$^{\circ}$C for up to 100 hours. The hardness was tested during the over-ageing and there ... -
Very-High-Precision Calculations in Physics
(Doctoral thesis at NTNU, 2012, Doctoral thesis, 2012) -
Two-phase Flow in Porous Media: Simulations and Theory
(Doktoravhandlinger ved NTNU, 1503-8181; 2013:2, Doctoral thesis, 2012) -
Optical Polarization Effects of Rough and Structured Surfaces
(Doktoravhandlinger ved NTNU, 1503-8181; 2012:234, Doctoral thesis, 2012)The reflection and scattering of light from surfaces is a topic that has been much discussed in the scientific literature. The application of optical methods for the characterization of surfaces and the understanding of ... -
Design knowledge and teacher-student interactions in an inventive construction task
(Journal article; Peer reviewed, 2013)The teacher plays an important role in the Technology and Design (T&D) classroom in terms of guiding students in their design process. By using concepts developed within engineering philosophy along with a framework for ... -
Dosedekning til uterus i pasienter med cervix cancer som gjennomgår ekstern stråleterapi: VMAT vs. 4 felts boksteknikk
(Master thesis, 2013)Formålet med denne oppgaven var å undersøke den interfraksjonelle organbevegelsenav øvre del av uterus i pasienter med intakt uterus som gjennomgår eksternstråleterapi som en del av den kurative behandlingen mot cervix ... -
A workflow for Diffraction/Scattering Computed Tomography using the XRDtoolkit.: Presenting the easy to use Python module for online XRD processing.
(Master thesis, 2013)We present a easy to use data analysis framework analysing X-ray diffraction data. It is aimed at users and scientists alike for online analysis at the beam line or offline anywhere. As an example application we demonstrate ... -
Mueller Matrix Imaging and Spectroscopy
(Doktoravhandlinger ved NTNU, 1503-8181; 2013:323, Doctoral thesis, 2013)This thesis presents experimental work on the following topics in Mueller matrix polarimetry; instrument design and implementation, and selected applications of liquid crystal based Mueller matrix polarimeters (MMP) and ... -
Alkaline oxide interface modifiers for silicon fiber production
(Journal article; Peer reviewed, 2013)We demonstrate the ability to pull small diameter silicon-core fibers with low oxygen content by using interface modifiers between the silica cladding and the semiconductor. Alkali earths scavenge oxygen and form a ... -
The Structure of Quark Stars
(Master thesis, 2013)In this thesis we will study the structure of quark stars using different models to mimic the interactions of quantum chromodynamics (QCD).The models we encounter is the MIT bag model and the two-and three-flavour linear ... -
Pd-based Membranes for Hydrogen Separation - Membrane Structure and Hydrogen Sorption and Permeation Behavior
(Master thesis, 2013)Efficient separation of hydrogen from gas mixtures is a truly enabling technology for hydrogen as an energy carrier. Palladium(Pd)-based membranes are 100% selective to hydrogen, but need to be made thin, yet without defects ... -
Swelling of a hemi-ellipsoidal ionic hydrogel for determination of material properties of deposited thin polymer films: an inverse finite element approach
(Journal article; Peer reviewed, 2013)Selective deposition of polymers at the surface of an ionic hydrogel is conventionally used to tailor properties of the composite material for application in for instance drug release and cell encapsulation. Here we describe ... -
Characterizing hardening on annealing of cold-rolled aluminum AA3103 strips
(Journal article; Peer reviewed, 2013)AA3103 aluminum strips were cold rolled to various von Mises strains up to 4.7. In addition, two severely deformed conditions were obtained by one and four cycles of cold accumulated roll bonding subsequent to cold rolling ... -
Suppression of multiple Scattering and imaging of nonlinear Scattering in Ultrasound imaging
(Master thesis, 2013)The work presented is based on an imaging method using dual-frequency band pulses for imaging of nonlinear scatters from stiff particles like micro calcifications. The pulse complex consist of a high-frequency imaging pulse ...