Browsing Department of Physics and Technology by Issue Date
Now showing items 81-100 of 2283
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Transport and storage of CO2 in natural gas hydrate reservoirs
(Peer reviewed; Journal article, 2009-02)Storage of CO2 in natural gas hydrate reservoirs may offer stable long term deposition of a greenhouse gas while benefiting from methane production, without requiring heat. By exposing hydrate to a thermodynamically preferred ... -
Effects of salinity on hydrate stability and implications for storage of CO2 in natural gas hydrate reservoirs
(Peer reviewed; Journal article, 2009-02)The win-win situation of CO2 storage in natural gas hydrate reservoirs is attractive for several reasons in addition to the associated natural gas production. Since both pure CO2 and pure methane form structure I hydrate ... -
Heterogeneous distributed calibration framework for the high level trigger in ALICE
(Doctoral thesis, 2009-02-13)This thesis focusses on the development of a distributed and re-configurable online calibration environment for the ALICE (A Large Ion Collider Experiment) HLT (High Level Trigger). ALICE1 is one of the four major experiments ... -
Multifrequency acoustic target strength of Northern krill
(Doctoral thesis, 2009-03-30)Although this thesis is a dissertation based on articles, an exhaustive overview on the main issues involved is also presented *. This is due to the necessity to summarize the numerous aspects of the problem, as well as ... -
Development and Integration of on-line Data Analysis for the ALICE Experiment
(Doctoral thesis, 2009-04-24)The ALICE detector setup is a dedicated experiment in Heavy Ion Physics, located at the Large Hadron Collider (LHC) at the European Organization for Nuclear Research (CERN)/ Geneva. Its various sub-detectors are electronically ... -
En sammenligning av NMRL-data og konvensjonelle loggemetoder fra Trollfeltet
(Master thesis, 2009-04-27)Logger kan grupperes etter hvilke ønskede reservoarparametrene disse registrerer. Loggemetoder undersøkt i denne oppgaven kan deles inn i tre kategorier: o Litologiske logger: Gammaloggen o Porøsitetslogger: Tetthetsloggen ... -
Evaluating tertiary water based EOR methods on the Veslefrikk field, with emphasis on analyzing sodium silicate injection by numerical simulation
(Master thesis, 2009-04-29)The applicability of some water based EOR methods was evaluated for the Veslefrikk field. Diversion of injection water, by injection of sodium silicate, was regarded as having an EOR potential. This was analyzed by numerical ... -
Hydrate Formation and CH4 Production from Natural Gas Hydrates - Emphasis on Boundary Conditions and Production Methods
(Master thesis, 2009-05-13)Natural gas hydrate is a solid state of gas and water at low temperature and high pressure. Gas hydrates are known to form hydrate plugs in production line, and has thus generally been considered a problem to the oil ... -
Measurement of Neutron Doses from Radiotherapy with 12C Ions and Photons
(Master thesis, 2009-05-21)The overall objective of this thesis has been to investigate the neutron doses from radiotherapy with photons and ions. The advantages of proton and ion therapy, compared to the use of photons were also examined. During ... -
Can magnetotail reconnection produce the auroral intensities observed in the conjugate ionosphere?
(Peer reviewed; Journal article, 2009-06)[1] In a recent case study, Borg et al. (2007) reported that an inverted V structure, caused by a field-aligned potential drop of 30 kV producing very strong X-ray aurora, was found in connection with tail reconnection. ... -
Measurement of conductivity of intumescing materials
(Master thesis, 2009-06-01)The main objective of this thesis was to develop a test method for finding the thermal conductivity of intumescing materials to be used in numerical simulations. When simulating for instance fire exposure to a construction ... -
Experimental Investigation of the Impedance Measurement Method for Detecting Dust and Gas Flames in a Flame Acceleration Tube. Development of Experimental Apparatus
(Master thesis, 2009-06-02)This thesis describes an experimental investigation of flame propagation in a 3.6-meter Flame Acceleration Tube (FAT) by the use of optical probes for flame detection and dust concentration measurements. The experiments ... -
Experimental Investigation of the Impedance Measurement Method for Detecting Dust and Gas Flames in a Flame Acceleration Tube. Development of Experimental Apparatus
(Master thesis, 2009-06-02)This master thesis describes an impedance measurement device built for investigating flame propagation in a Flame Acceleration Tube, FAT. This tube is 3.6 m long, and has been instrumented with thermocouples, pressure ... -
Dynamics in the H2+ molecule, using a one dimensional model
(Master thesis, 2009-06-02)A 1D model of the hydrogen molecular ion in the Born-Oppenheimer (BO) approximation. The making and testing of the model is described, as well as some underlying theory. The model also calculates non-BO effects. -
Adaptive transdure basert på tidsreversering. Målinger på en 5x5 array prototype
(Master thesis, 2009-06-11)Utvikling av adaptiv transduserarray som er ment for tidsreverserende bruk på en olje/gass-separator. Prinsippet består i styring av en transduser oppdelt i små ankeltceller (array). Hver celle styres av sin egen elektronikk, ... -
Simulering og analys av 3-fase strømningseksperimenter
(Master thesis, 2009-06-12)Formålet med denne oppgaven var å analysere og simulere strømningseksperimenter med 2 og 3 faser. Størsteparten av oppgaven dreide seg om å historietilpasse eksperimentene ved å endre relativ permeabilitetskurver og simulere ... -
Determination of the minimum ignition energy (MIE) of premixed propane/air
(Master thesis, 2009-06-12)This Master thesis describes an experimental study aimed at determining the minimum ignition energy (MIE) of premixed propane/air mixtures. Two fundamentally different circuits have been employed for creating the sparks ... -
Vannutfelling på rustoverflater i gassrør
(Master thesis, 2009-06-12)Målet for denne oppgaven har vært å legge et grunnlag for beregninger av vannegenskaper i adsorbert fase på rust. Egenskaper bestemmes av et antall kompliserte termodynamiske og kinetiske mekanismer, som gjør at problemstillingen ... -
Gravitino dark matter and the flavour structure of R-violating operators
(Peer reviewed; Journal article, 2009-06-15)We study gravitino dark matter and slow gravitino decays within the framework of R-violating supersymmetry, with particular emphasis on the flavour dependence of the branching ratios and the allowed R-violating couplings. ...