Search
Now showing items 1-100 of 193
(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 ...
(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, 2009)
(Master thesis / Masteroppgave, 2009)
(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, 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)
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, 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 / 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 / Masteroppgave, 2009)
(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, 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, 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)
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, 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 ...
(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, 2009)
(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 ...
(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, 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 / Masteroppgave, 2009)
The goal of this project was to study the difference between CWR22 prostate cancer xenografts with full androgen supply and after undergoing androgen deprivation and/or radiation therapy in immunedeficient mice by applying ...
(Master thesis / Masteroppgave, 2009)
Abstract
A previous electron diffraction study during a student project indicated that Er1.96Ca0.04Ti2O6.98 exhibit a primitive Bravais lattice. This result has not been repeated during the current investigations. The ...
(Doctoral thesis / Doktoravhandling, 2009)
Experimental particle physics is on the verge of a new era, heralded by the Large Hadron Collider being commissioned at the European Center of Nuclear Research, CERN, located just outside of Geneva, Switzerland. The LHC ...
(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 ...
(Master thesis / Masteroppgave, 2009)
The research community is constantly on the search for new methods and products to improve cancer diagnosis and therapy. One promising area is nanomedicine - the use of nanotechnology in medicine.
Nanoparticles such as ...
(Master thesis / Masteroppgave, 2009)
(Master thesis / Masteroppgave, 2009)
Ved høy fysisk belastning produserer musklene mye laktat, noe som fører til at den høye arbeidsbelastningen ikke kan opprettholdes særlig lenge. Idrettsutøvere vil gjerne vite hvor høy konsentrasjon av laktat de har ved ...
(Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2009)
It is a challenge to find interesting and realistic projects where numerical methods can be used to enhance student understanding of physical phenomena. We present such a project in which a group of students used numerical ...
(Doctoral thesis / Doktoravhandling, 2009)
The present work was set to study materials, and in particular thermoelectric materials based on first-principle calculations. Density functional theory was used to calculate the electronic structure of skutterudites, Zintl ...
(Doctoral thesis / Doktoravhandling, 2009)
Junctions to semiconductors are necessary to electrically access to the semiconductors and its characteristics are fundamental for the achievement of devices that can be used both for the material characterization and for ...
(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, 2009)
The electronic structure and optical properties of orthorhombic, monoclinic, and rhombohedral (corundum type) modifications of ZnSiO3, and of rhombohedral, tetragonal, and cubic (spinel type) modifications of Zn2SiO4 have ...
(Master thesis / Masteroppgave, 2009)
De siste årene har det vært stor fokus på rekruttering til realfag og læreryrket. Et av tiltakene har vært Lektor- og adjunktprogrammet (LAP) ved Universitet i Oslo som gir en faglærerutdanning med mastergrad på fem år og ...
(Master thesis / Masteroppgave, 2009)
Hvis de fornybare og CO2-frie alternativene til fossilt brensel som sol-, vind- og vannkraft skal forsyne verden med energi, må denne konverteres fra elektrisitet til et energimedium. Hydrogen er en lovende kandidat som ...
(Master thesis / Masteroppgave, 2009)
Machs prinsipp angår et bredt spekter av fenomener knyttet til hvordan ting vekselvirker på lange, til og med kosmologiske, avstander. I denne masteroppgaven gir jeg en historisk oversikt over forskning som har foregått ...
(Master thesis / Masteroppgave, 2009)
Stråleterapi er en vanlig behandlingsmetode av pasienter med kreft. Behandlingen utføres ved å bestråle områder i pasienten hvor det er kreftsykdom, og på den måten drepe kreftcellene. For at behandlingen skal være vellykket ...
(Master thesis / Masteroppgave, 2009)
This thesis is a study of coherence theory in light in classical
electromagnetism and quantum optics. %The coherence is quantified
Specifically two quantities are studied: The degree of first-order
temporal coherence, which ...
(Master thesis / Masteroppgave, 2009)
Oppgaven gir en innføring i anyoner, partikler med fraksjonell statistikk som kun finnes i to-dimensjonale systemer. Disse partiklene interpolerer mellom bosoner og fermioner, og derfor behandles også de to-dimensjonale ...
(Master thesis / Masteroppgave, 2009)
(Master thesis / Masteroppgave, 2009)
Hydrogen storage in a mixed system of lithium and sodium amide : A DFT modeling study Restricted Access
(Master thesis / Masteroppgave, 2009)
Summary
In the development of non-emissive hydrogen cars, an efficient and safe hydrogen storage method is needed. One possibility is reversible storage of hydrogen in solid materials. Throughout the last decade, intense ...
(Master thesis / Masteroppgave, 2009)
Zinc oxide (ZnO) is becoming an attractive semiconductor material
within optoelectronics and solar cell applications. The usage
of ZnO as a transparent conducting oxide (TCO) is interesting both as
electrode in Si-based ...
(Master thesis / Masteroppgave, 2009)
T-47D cells were gamma-irradiated at acute dose rates by a Co-60 source, and their low-dose response was studied by clonogenic assay. T-47D cells have previously been found to express low-dose hyper-radiosensitivity (HRS) ...
(Master thesis / Masteroppgave, 2009)
In this thesis, a numerical study of double layers in plasma is presented. Double layers
are structures consisting of two oppositely charged space charge layers, creating a finite
change in electrostatic potential over the ...
(Master thesis / Masteroppgave, 2009)
(Master thesis / Masteroppgave, 2009)
(Master thesis / Masteroppgave, 2009)
(Master thesis / Masteroppgave, 2009)
(Master thesis / Masteroppgave, 2009)
Hydrothermal ZnO samples having lithium concentration in the range
of $3 \times 10^{14}$ -- $1 \times 10^{17}$\,Li/cm$^{3}$ were
implanted with nitrogen. The variation of Li concentration was done
by high temperature ...
(Master thesis / Masteroppgave, 2009)
The time-independent Schrödinger equation is solved using the finite element method (FEM) and the finite difference method (FDM). The resulting eigenvalue problems are solved using the ARPACK++ library. Both methods are ...
Intelligent and Adaptive Systems in Cancer Biomedicine Restricted Access
(Doctoral thesis / Doktoravhandling, 2009)
Sammen med kirurgi er stråleterapi den behandling som helbreder flest kreftpasienter. Behandlingsresultatet er imidlertid avhengig av tilskrekkelig høye stråledose til kreftsvulsten, uten at omliggende friskt vev og organer ...
(Master thesis / Masteroppgave, 2009)
In this thesis, we studied numerically systems consisting of several interacting electrons in two-dimensions, confi ned to small regions between layers of semiconductors.
These arti cially fabricated electron systems are ...
(Master thesis / Masteroppgave, 2009)
Diffusjonstensor avbildning (DTI) er et relativt anerkjent men nytt verktøy innen MRI. DTI er følsom for strukturelle egenskaper i vev som ikke er målbar med konvensjonelle MR-teknikker. Teknikken gjør det mulig å måle ...
(Master thesis / Masteroppgave, 2009)
Denne oppgaven omhandler prototypeutvikling av et nytt multi-Nål Langmuir Probe system (m-NLP). Systemet har blitt utviklet ved UiO for bruk på sonderaketter og satellitter. Måleprinsipper, design av instrumentet, samt ...
(Master thesis / Masteroppgave, 2009)
This master’s thesis explores how to minimize the long-lived actinide waste that is produced in nuclear power plants by performing simulations of thoriated nuclear fuels in existing reactor designs.
An European pressurized ...
(Master thesis / Masteroppgave, 2009)
Radioimmunterapi (RIT) benytter seg av konjugater av radionuklider og antistoffer for å avsette terapeutisk stråledose til kreftceller som uttrykker de rette antigenene. Hovedmålet med denne oppgaven var å undersøke effekten ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2009)
A study of the inclusive charged hadron production in two-photon collisions is described. The data were collected with the DELPHI detector at LEP II. Results on the inclusive single-particle pTpT distribution and the ...
(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, 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, 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 ...
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 ...
(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 / 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, 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, 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)
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 / 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, 2008)
(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 ...
(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, 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)
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, 2008)
(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 ...
(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 ...
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, 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, 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 ...
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, 2008)
Reducing the supply voltage of operational amplifers and analog circuitry in general, is
of great importance as it will ensure the future coexistence of analog and digital circuits
on the same silicon die. While digital ...
(Master thesis / Masteroppgave, 2008)
In this work, intramolecular and intermolecular associations under the effect of shear flow of dilute aqueous alkaline solutions of dextan, hydroxyethylcellulose (HEC), and the hydrophobically modified analogue (HM-2-HEC) ...
(Master thesis / Masteroppgave, 2008)
Bakgrunn
Masteroppgaven omfatter modellering, simulering og analysering av kontaktkreftene mellom strømavtager WBL 88 og kontaktledningssystem 20 B. Det er gjort målinger på system 20B mellom Sarpsborg og Kornsjø med ...
(Master thesis / Masteroppgave, 2008)
The Gaussian sum filter is a track reconstruction algorithm specialized on dealing with the non-Gaussian radiative energy loss of electrons. This thesis deals with invariant mass determination from the non-Gaussian track ...
(Journal article / Tidsskriftartikkel / PublishedVersion, 2008)
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2008)
Conditional sampling methods are generalized by applying a matched-filter on the reference signal. This generalized method is illustrated by data obtained in a magnetized toroidal plasma without rotational transform. By ...
(Doctoral thesis / Doktoravhandling, 2008)
The present work is a study of the relationship between a quantum Hall system and its one-dimensional representation. The standard theory, which is based on general arguments, predicts that the edge of the quantum Hall ...
(Doctoral thesis / Doktoravhandling, 2008)
Like the majority of investigated cell lines, T-47D breast cancer cells display a pronounced low dose hyper-radiosensitivity when irradiated with 60Co ƒ×-rays. The well-known transient abolition of hypersensitivity by a ...
(Doctoral thesis / Doktoravhandling, 2008)
Silicon technology has become a cornerstone for the technological advances in our society for the last five decades. For carrying on with minimization of electronic devices a huge effort has been directed toward the ...
(Doctoral thesis / Doktoravhandling, 2008)