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(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2005)
The orientation relationship between ferroelastic domains in LaNbO4 (with 0.5 at.% Sr) is studied by selected area electron diffraction and high-resolution electron microscopy. At room temperature the domains are related ...
(Master thesis / Masteroppgave, 2009)
Thin films of transparent conductive oxides as active electrodes in combination with silicon substrates are pursued for new generation of solar cells. A main issue is to obtain structures with optimum interfacial properties ...
(Master thesis / Hovedoppgave, 2005)
The ekpyrotic universe is a brane cosmology theory with an alternative explanation of the big bang as a collision between two hyperplanes. We first introduce the reader to brane objects in the context of string theory, and ...
(Master thesis / Masteroppgave, 2005)
This master thesis discusses the VLSI implementation of an Analog VLSI
Cochlea Model with an AER output interface. The cochlea uses a unidirectional filter cascade approach, and utilizes a capacitively coupled bi-quad ...
A new dosimetric protocol for high energy photon radiotherapy beams in Norway using radiochromic film Restricted Access
(Master thesis / Masteroppgave, 2008)
The continual development of high energy photon beam radiotherapy in Norway urges for a revision in dosimetric quality controls. It is favorable to use sharply defined fields, but existing routines for quality assurance ...
(Master thesis / Hovedoppgave, 2004)
This thesis discusses ways in which history of physics can be useful
in physics education. Examples are mainly chosen from the field of
electromagnetism.
The first chapter deals with objections against the use of history ...
(Master thesis / Hovedoppgave, 2005)
In this thesis, the spacecraft potential measured by the EFW instrument on Cluster has been used to map the plasma density distribution of the magnetosphere. A relation between the spacecraft potential and the plasma density ...
(Master thesis / Masteroppgave, 2008)
Stylolites are features of localized dissolution in sedimentary rocks. They are planes oriented normal to the compaction direction and have a rough and often teeth-like surface structure. The vertical spacing of individual ...
(Master thesis / Masteroppgave, 2009)
Many of the patterns that can be observed in nature or in experiments are the result of surface instabilities. These structures typically arise when an interface is forced to move due to fluxes of heat and/or mass or because ...
(Master thesis / Masteroppgave, 2008)
This thesis gives a description of a prototype bioimpedance measurement
system based on the integrated circuit AD5933. The prototype operates
from 5 - 100 kHz and covers the impedance range 0.1k
- 10 M
in six
subranges.
The ...
(Master thesis / Masteroppgave, 2005)
As most radio communication is based on a narrow banded carrier tech
nique, the technique this thesis is based on utilizes single impulse transmissions and wide bandwidths. The technique is called Ultra WideBand Impulse ...
(Master thesis / Masteroppgave, 2009)
Strong rare-earth permanent magnets have become relatively cheap to produce, and play an important role in the development of modern technology. One example is the integration of magnetophoresis and microfluidics, where ...
(Master thesis / Masteroppgave, 2007)
In this study we take advantage of the slow, smooth rotation of the strong magnetic fields in interplanetary
magnetic clouds to identify transitions between particle precipitation/plasma convection
states of the magnetosphere ...
(Master thesis / Hovedoppgave, 2004)
Ved høyenergetisk strålebehandling av kreft hos kvinner kan dosene til ovariene (eggstokkene) være av betydning for ovariefunksjonen, selv om disse ligger et stykke utenfor primærstrålefeltet. Det vil i hovedsak være spredt ...
(Master thesis / Masteroppgave, 2009)
Hypoksiske celler som eksponeres for akutt bestråling vil, som hovedregel, være mer strålingsresistente enn veloksygenerte celler. Tidligere studier har derimot vist at kronisk hypoksiske celler tåler ståling med lav ...
(Master thesis / Masteroppgave, 2009)
(Master thesis / Masteroppgave, 2006)
From the time of its introduction, the standard model has become a very well established model in particle physics. In fact, no experiment so far has shown any violation of this model. Still, there are some unsatisfying ...
(Master thesis / Masteroppgave, 2005)
Abstract - Device scaling is directly responsible for Moore’s law and has enabled remarkable improvements in CMOS (Complementary Metal-Oxide-Semiconductor) device performance. As device dimension shrinks, the channel ...
(Master thesis / Masteroppgave, 2009)
The following Master’s thesis is concerned with several aspects of the wave-particle duality of light. It is loosely divided in three parts. In the first part we consider historical, theoretical and experimental aspects ...
(Master thesis / Masteroppgave, 2009)
We introduce some modern mathematical and theoretical tools in 2-dimensional physics, and apply them to the Ising model. We rederive some well-known results, but also some new properties of this important model. All the ...
(Master thesis / Masteroppgave, 2009)
In this thesis we create a program which samples subsea resistivity modelsfrom the a posteriori probability distribution based on marine controlled source electromagnetic (CSEM) data.
In the first part we create a draft ...
(Master thesis / Masteroppgave, 2009)
(Master thesis / Masteroppgave, 2009)
(Master thesis / Masteroppgave, 2009)
I 2006 fikk vi en ny skolereform i Norge, Kunnskapsløftet. I motsetning til tidligere skolereformer, har Kunnskapsløftet gjennomgående læreplaner. Det vil si at den strekker seg fra 1. klasse i grunnskolen til 3. klasse(Vg3) ...
(Master thesis / Masteroppgave, 2009)
Oppgaven gikk ut på å realisere en kontinuerlig transformasjonskrets -basert på wavelet.
Definisjon av Wavelet-begrepet: Wavelet betyr liten bølge.
Waveletanalyse: Bruker mange av de samme metodene som fouriertransformasjonen, ...
(Master thesis / Masteroppgave, 2005)
The concept of ultra wideband impulse radio has interesting properties.
The wide transmission band makes penetration through different ma
terials better than narrow band transmission. The lack of carrier may
be traded for ...
(Master thesis / Masteroppgave, 2009)
Problemstillingen for denne oppgaven var å undersøke replikasjonsmønstre og organiseringen av replikasjonsgafler i Vibrio cholerae. Det ble også utført forsøk på hurtigvoksende kulturer av Escherichia coli.
V.cholerae er ...
(Master thesis / Masteroppgave, 2008)
Strålingsinduserte skader hos levende organismer antas i første rekke å skyldes skader på arvemolekeylet DNA. DNA er under mesteparten av cellesyklus kveilet sammen med histonene i cellekjernen. DNA-histon-kompleksene, ...
(Master thesis / Masteroppgave, 2008)
Denne oppgaven dreier seg om bruk av datalogging i fysikkundervisningen i videregående skoler. Oppgaven tar for seg følgende forskningsspørsmål:
1. Hvilke forutsetninger har fysikklærere for å bruke
datalogging ...
(Master thesis / Hovedoppgave, 2003)
The main goal of the project which this thesis is a part of, is to develop a system
that can to track hand movements within a restricted area. The last few years has
seen the development of several different relatively ...
(Master thesis / Masteroppgave, 2009)
This work uses an extensive number of simulations to determine the usability
of DG MOSFETs in SRAM circuit design. The simulations have been carried
out in Silvaco ATLAS and MixedMode model and circuit simulation ...
(Master thesis / Hovedoppgave, 2005)
Denne oppgåva studerer ein smal (100-200 km) konveksjonskanal observert med EISCAT Svalbard Radar (ESR) den 20. desember 2001. Oppgåva har to mål. Det eine er å forklara den observerte konveksjonskanalen og fastslå kva for ...
(Master thesis / Masteroppgave, 2008)
I celler pakkes DNA-molekylet tett sammen rundt flere ulike proteiner, de såkalte histonene. Det er av interesse å kartlegge hvorledes denne nære kontakten mellom DNA og proteiner påvirker strålingsresponsen til DNA. DNA ...
(Master thesis / Masteroppgave, 2005)
ABSTRACT
There is a considerable and growing interest in broadband system for providing high capacity communications and broadcasting, through for example high speed Internet.
Because of the large bandwidth available in ...
(Master thesis / Masteroppgave, 2009)
Litiumformat (LiFo) ser ut til å være et lovende dosimetermateriale ved ESR-spektroskopi. LiFo kan måle stråledoser under 1 Gy med høy presisjon, og viser ellers gode dosimeteregenskaper på lik linje med alanin, som i dag ...
(Master thesis / Hovedoppgave, 2002)
DNA-heliksen i cellekjernen er under store deler av cellesyklus kveilet opp og pakket sammen til en mer kompakt struktur ved hjelp av spesielle proteiner, histoner. Det er av interesse å undersøke muligheten for energioverføring ...
(Master thesis / Masteroppgave, 2008)
The equation of motion for a classical charged point particle in curved space-time is given by the generalized Lorentz-Abraham-Dirac equation. This equation contains a nonlocal term called the tail term, which consists of ...
(Master thesis / Masteroppgave, 2007)
(Master thesis / Masteroppgave, 2008)
LHC akseleratoren (Large Hadron Collider) ved CERN (Organisation euroéenne pour la recherche nucléaire) i Sveits starter opp i disse dager, og med den en ny æra i partikkel-fysikken. Fysikere involvert i ATLAS detektoren ...
(Master thesis / Masteroppgave, 2009)
(Master thesis / Masteroppgave, 2005)
Litium format monohydrat (Lifo) er i denne oppgaven undersøkt som dosimetermateriale
i ESR- (Elektron Spinn Resonans) dosimetri, med vekt på responsen ved nøytron- og
ionebestråling. Lifo er tidligere vist å være et lovende ...
(Master thesis / Masteroppgave, 2008)
1.0 Sammendrag
Under arbeid med prosjektet har jeg som innledende delprosjekt arbeidet med analoge kretsløsninger, herunder likeretting og omhylningskurve av ekkosignal. Konklusjon og erfaring fra innledende prosjekt vil ...
(Master thesis / Masteroppgave, 2008)
(Master thesis / Hovedoppgave, 2005)
Abstract
A solar thermal system transforms radiation from the sun into heat which in turn can cover heating demands. The energy is absorbed by a solar collector and transported to a heat store by pipes and a heat carrier ...
(Master thesis / Masteroppgave, 2006)
Bioimpedance and treatment response monitoring in cancer research
Bioimpedance monitoring in vivo is an non-invasive technique to examine changes in electrical conductivity. The electrical properties of tissue depend upon ...
(Master thesis / Masteroppgave, 2008)
For å lette arbeidet med å designe og analysere optimale/suboptimale Kalmafiltere kreves det at en gjør en rekke analyser for å verifisere designet. For å gjøre dette ønsker vi å lage et Matlab-program med et grafisk ...
(Master thesis / Masteroppgave, 2008)
The Higgs mechanism is the best candidate theory for explaining how elementary particles obtain masses, but the Higgs boson predicted by this theory is as of today not observed. The Higgs to gamma gamma channel is one of ...
(Master thesis / Masteroppgave, 2009)
(Master thesis / Hovedoppgave, 2002)
I denne oppgaven har det blitt utviklet en metode for lavdoseratebestråling av celler i kultur, og det har blitt utført innledende eksperimenter for å kartlegge effektene av denne bestrålingen på humane celler. Cellene som ...
(Master thesis / Hovedoppgave, 2006)
Samandrag
Humane celler sin respons på stråling endrar seg med varierande doseratar. I denne oppgåva har to humane cellelinjer vorte bestrålte med ultralåge doseratar for å kartleggje effekten av strålinga ved bestrålingstider ...
(Master thesis / Masteroppgave, 2009)
This thesis discusses substructures within convecting large-scale plasma density enhancements, known as “patches”, in the polar F-region ionosphere. Two days of high resolution EISCAT Svalbard Radar (ESR) data from both ...
(Master thesis / Masteroppgave, 2006)
Polar cap patches are regions of enhanced plasma density, seen to drift fromthe sunlit ionosphere
on the day side, over the polar cap, and into the night side Auroral oval. The patches are related
to substorm activity and ...
(Master thesis / Masteroppgave, 2008)
Sammendrag
Denne oppgaven er en del av FYS 21-prosjektet og tar for seg utvikling og utprøving av undervisningsopplegg med empirisk-matematisk modellering i fysikk for tredjeklasse på videregående skole.
Hensikten med å ...
(Master thesis / Masteroppgave, 2009)
Denne oppgaven tar for seg utviklingen av et mobilt instrument som kan måle både potensial og konduktans simultant i huden. Teori om huden og måleprinsipper, design av instrumentet, labview-kode, testing og resultater vil ...
(Master thesis / Masteroppgave, 2007)
En høyytelse fastoksidbrenselcelle (LSCF|YDC|YSZ|NiYSZ) ble karakterisert i en kommersiell målecelle (ProboStat™). Det ble brukt et to-elektrode måleoppsett for elektrokjemisk impedansspektroskopi (EIS) og strøm-speningsmålinger, ...
(Master thesis / Hovedoppgave, 2006)
In this work hydrides formed from three different intermetallics compounds, Zr2Cu, Zr2Pd and LaPtIn, were investigated, with focus on hydrogen induced structural changes. The main methods were neutron (PND) and synchrotron ...
Phase separation, transformation and domain formation in LaNbO4 supersaturated with Sr : A TEM study
(Master thesis / Hovedoppgave, 2003)
We have studied the lanthanum niobate system doped with strontium of nominal composition La_{0.95}Sr_{0.05}NbO_{4}. We observe two phases in the synthesized material. One of these phases is Sr-poor LaNbO_{4}. The other ...
(Master thesis / Masteroppgave, 2007)
Simultaneous two-phase flow in porous media has been studied
experimentally, in a large quasi two-dimensional laboratory model of
roughly $~214000$ pores. Both the invasion phase and steady-state
have been considered. ...
(Master thesis / Masteroppgave, 2008)
If a magnetic field above a certain critical field (Bc1) is imposed on a type II superconductor, it will start to penetrate in the form of magnetic flux quanta, or vortices, resulting in a meta-stable non-equilibrium critical ...
(Master thesis / Hovedoppgave, 2001)
Oppgaven gir en beskrivelse av fysikkelevers opplevelse av
fysikkundervisningen i videregående skole, hvilke faktorer
som påvirker valg av fysikk, og fysikkelevers syn på fysikkfaget.
I tillegg gis en beskrivelse av ...
(Research report / Forskningsrapport, 2008)
(Utgitt i serien Eureka Digital (ISSN 0809-8360) nr 12/2008)
Til alle tider har planter, dyr og mennesker vært utsatt for radioaktiv stråling. Vi lever i et miljø med kosmisk stråling fra verdensrommet og med naturlig ...
(Master thesis / Masteroppgave, 2009)
Redusere forsyningsspenningen til digitale kretser (og også analoge kretser) er noe som er veldig relevant i og med at dette resulterer ofte i en redusering av effektforbruket. Dette blir viktigere og viktigere ettersom ...
(Research report / Forskningsrapport, 2008)
(Utgitt i serien Eureka Digital (ISSN 0809-8360) nr 13/2008)
Satellitter representerer en ny og stadig viktigere metode for forskning og overvåking av jordens miljø og endringer som skyldes menneskelige aktiviteter. Bruk ...
(Master thesis / Hovedoppgave, 2004)
In this thesis, I will address the so called forward problem of electro-magnetics. That is, given a setup of electrodes on a conductive material, can we compute where the current will pass through? More specifically, from ...
(Doctoral thesis / Doktoravhandling, 2009)
Partikkelakseleratoren Large Hadron Collider (LHC) ved CERN utenfor Geneve vil kollider protoner og tunge ioner med en hastighet opp mot lyshastigheten.
I disse kollisjoene vil det dannes en ny form for materie. Denne ...
(Master thesis / Masteroppgave, 2008)
Denne oppgaven omhandler bruk av optikk i form av infrarødt lys som
kommunikasjonsbærer i et trådløst sensornettverk over og under vann.
Oppgaven tar for seg hvordan et sensornettverk bestående av Tmote Sky
sensornoder fra ...
(Master thesis / Masteroppgave, 2009)
(Master thesis / Hovedoppgave, 2006)
(Master thesis / Hovedoppgave, 2005)
Ulempen med benforlengelse med et eksternt apparat er at det er ubehagelig for pasienten å ha apparatet påmontert i den lange tilhelingstiden etter oppnådd forlengelse. På grunn av ubehaget og ulempene med å bære apparatet ...
(Master thesis / Masteroppgave, 2008)
(Doctoral thesis / Doktoravhandling, 2009)
Nanoscaled electronic devices have attracted much attention due to their optical and electronic properties, especially related to MOS (Metal-Oxide-Semiconductor) devices used for memory storage applications. Improved ...
(Doctoral thesis / Doktoravhandling, 2009)
This dissertation presents the measurement of level densities and y-ray strength functions of selected warm nuclei in the vicinity of closed and near closed shells. These quantities are important for their application ...
(Doctoral thesis / Doktoravhandling, 2009)
Ved behandling av avansert livmorhalskreft spiller stråleterapi en avgjørende rolle og det gis både ekstern og intern behandling (brachyterapi). Stråleterapi er alltid en avveiing mellom dosen som kan gis til maligne områder ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2007)
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2005)
On 6 December 2002, during winter darkness, an extraordinary event occurred in the sky, as viewed from Longyearbyen (78° N, 15° E), Svalbard, Norway. At 07:30 UT the southeast sky was surprisingly lit up in a deep red ...
(Master thesis / Hovedoppgave, 2003)
The main objective of this thesis is to consider the concept of
gravitational entropy from a perturbative point of view. A flat,
matter dominated universe model is subjected to a linear perturbation,
and the entropic ...
(Master thesis / Hovedoppgave, 2005)
I denne oppgava er det utvikla en enkel metode for å bestemme energiutbyttet i et solvarmeanlegg. I slike anlegg omformes
strålingsenergien fra sola ved hjelp av en solfanger til varmeenergi i et transportmedium som for ...
(Master thesis / Hovedoppgave, 2002)
In this thesis I discuss various topics relating to the definition of
particles and vacuum states in quantum field theory in general, and
apply it to non-inertial reference frames in Minkowski spacetime. The
particle concept ...
(Doctoral thesis / Doktoravhandling, 2008)
The work presented in this thesis concerns the study of complex nanofluids. The interaction of particles in dispersions under the influence of electric and magnetic fields has been studied. The main focus has been the ...
(Master thesis / Hovedoppgave, 2007)
Sammendrag
Denne oppgaven beskriver arbeidet med å karakterisere høytemperaturegenskapene til Ca12Al14O33, også kalt Mayenitt, 12CaO•7Al2O3 eller bare C12A7. Det er rapportert at Mayenitt inneholder hydridioner etter ...
(Master thesis / Masteroppgave, 2008)
Formålet med denne oppgaven var å benytte cone beam CT (CBCT)-avbildning til å kvantifisere tumorbevegelse og anatomiske endringer av risikoorgan over en fraksjonert behandling av prostatakreft. Videre skulle biologiske ...
Investigations of dose reduction and diagnostic image quality using bismuth shielding during CT examination of lungs Restricted Access
(Master thesis / Masteroppgave, 2008)
Abstract
The introduction of Computed Tomography (CT) in radiology in the 1970 s was followed by rigorous radiation protection demands due to the higher doses of this modality compared to conventional x-ray based radiography. ...
(Master thesis / Masteroppgave, 2008)
Abstract:
The energy dissipation in an earthquake can be partitioned into three components Wtot = Wradiated +Wexpansion +Wfriction, where Wradiated is the seismic radiated energy, Wexpansion is the energy consumed propogating ...
(Master thesis / Masteroppgave, 2009)
(Master thesis / Masteroppgave, 2008)
Det har de siste årene blitt påvist stor strålefølsomhet i celler bestrålt med doser under 0.5 Gy i en rekke ulike celletyper. Dette fenomenet kalles hypersensitivitet (HRS). Effektbestrålinger utført i denne oppgaven med ...
(Master thesis / Masteroppgave, 2009)
The goal of this work is to study a system, which covers both the demands for heating and cooling of a building. The system is designed to be one large central installation for storage and distribution. Such systems obviously ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2006)
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2006)
(Doctoral thesis / Doktoravhandling, 2009)
In this thesis the dynamics of the granular Rayleigh-Taylor is studied in a rectangular Hele-Shaw cell. The affect of the interstitial fluid properties on the mixing of the grains is studied in experiments and well matched ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2009)
The interaction between group-Ia elements in ZnO have been studied by implanting Na into hydrothermally grown ZnO samples containing ~4×1017 Li/cm3 and employing secondary ion mass spectrometry for sample analysis. ...
(Doctoral thesis / Doktoravhandling, 2009)
(Master thesis / Masteroppgave, 2006)
In recent years there has been a dramatic increase in the number of wireless applications in both commercial and markets such as defense. Radio Frequency RF) Micro Electro Mechanical Systems (MEMS) with its low power ...
(Master thesis / Masteroppgave, 2006)
In this thesis the inner magnetosphere of Saturn has been studied using
data from the Langmuir probe on the spacecraft Cassini.
A program has been developed to analyze data from the Langmuir probe.
Using this program, three ...
(Master thesis / Masteroppgave, 2007)
The introduction of turbo codes in 1993 was a breakthrough in constructing error correction codes that were able to approach the theoretical limit of performance. Different implementations of turbo codes have become widely ...
(Master thesis / Masteroppgave, 2006)
EPR-spektroskopi, med avartar som ENDOR og EIE, er veletablerte teknikkar for studiar av radikaldanning i einkrystallar. Hovudmålet med dette arbeidet har vore å identifisere kva radikal som vert danna i einkrystallar av ...
Tilpasning av et kommersielt tilgjengelig generisk sanntids-signalprosesseringssystem for anvendelse som høyoppløselig radar Restricted Access
(Master thesis / Masteroppgave, 2008)
This thesis for the masters degree at the University of Oslo, department of informatics is describing work done on implementing a high resolution Dopplerradar on commercially available COTS-hardware.
Traditionally, radio ...
(Master thesis / Masteroppgave, 2007)
Epitaxial p+/n–/n+ silicon diodes have been irradiated with 6 MeV electrons to a dose of 1014 cm−2, and isochronal and isothermal annealings at the temperatures 325 – 360 C has been performed. The reaction kinetics of VO, ...
(Master thesis / Masteroppgave, 2007)
Abstract
The purpose of this thesis is the investigation of the intratumoural network through image analysis of histological sections. Tumour vasculature is characterized by complexity, irregularities and poorly regulated ...
(Master thesis / Masteroppgave, 2009)
In this project I address the questions of how the frictional force
depend on the sliding velocity. Can asperity creep give a velocity
weakening effect on the dynamic coefficient of friction for low sliding velocities, and ...
(Master thesis / Hovedoppgave, 2003)
Irradiating T-47D cells with doses below 1 Gy revealed that cells of this line express hyper-radiosensitivity (HRS). In the present study HRS has been investigated when a challenge dose was given 6 or 24 hours after a ...