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Now showing items 101-193 of 193
(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 ...
(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 ...
(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 / 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, 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)
(Journal article / Tidsskriftartikkel / PublishedVersion, 2008)
(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 ...
(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 ...
(Master thesis / Masteroppgave, 2009)
(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 ...
(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, 2007)
The thesis presents results on two different aspects of flux penetration into superconductors. It is predominantly an experimental study using magneto-optical imaging, a microscopy technique for visualising magnetic ...
(Doctoral thesis / Doktoravhandling, 2008)
(Doctoral thesis / Doktoravhandling, 2007)
This works is dedicated to study of magnetic flux properties in thin-film superconductors. At present time superconductors are widely used in various micro- and nanoelectronic devices, for example, extremely sensitive ...
(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, 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, 2008)
The dynamics of various fundamental defects in electron-irradiated high-purity silicon detectors (diodes) were investigated by deep-level transient spectroscopy (DLTS). Samples with various oxygen concentrations were used ...
(Master thesis / Masteroppgave, 2007)
Design og produksjon av en enrgihøster ved bruk av sensonor MPW processen. Energihøsteren bruker piezoelektrisk materiale for å konvertere mekanisk energi til elektrisk energi. Modelering og design av systemet er utført ...
(Master thesis / Masteroppgave, 2009)
(Master thesis / Masteroppgave, 2008)
I CT (Computed Tomography) bygges bildene opp på grunnlag av en størrelse kalt CT-tall, eller Hounsfield-enheter (HU). CT-tallskalaen er definert ut fra to punkter vann (0 HU) og luft (-1000 HU). CT-tall måles enkelt på ...
(Master thesis / Masteroppgave, 2007)
During the last decade, the CMOS camera has developed rapidly and quickly became a commercial success. A number of research groups are developing quite different CMOS vision sensors: bio-inspired, so called 'retinomorphic' ...
(Master thesis / Masteroppgave, 2009)
(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, 2008)
Oppgaven undersøker om det er mulig å bruke ultralyd som kommunikasjonsbærer i et sensornettverk, og effektforbruket denne
kommunikasjonsmetoden medfører. Oppgaven er en del av et større
prosjekt støttet av Hydro, der ulike ...
(Master thesis / Masteroppgave, 2008)
The nuclei 163,164 Dy were analyzed at the Oslo Cyclotron laboratory (OCL) by use of the so-called Oslo method. This method enables us to extract both the level density and the γ -ray strength function simultaneously from ...
(Master thesis / Masteroppgave, 2008)
MEMS-systemer har gjennom årene blitt et stort forskningfelt, med en rekke kommersielle suksesser.
Siden 1990, har fordelene med MEMS, som alternativ løsning i trådløse systemer, blitt fremhevet som følge av den stadig ...
(Master thesis / Masteroppgave, 2006)
Oppgaven ser på muligheten for å buke fotoassosiasjon som metode
for å produsere kalde molekyler. Det gjøres eksplisitte regninger
for Litium molekylet, og undersøkes i hvilken grad vi kan forvente
å produsere ultrakalde ...
(Master thesis / Masteroppgave, 2008)
(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)
(Master thesis / Masteroppgave, 2009)
(Master thesis / Masteroppgave, 2008)
Sammendrag
Hovedmålet med denne oppgaven var å undersøke α-emitteren, radium-223s, cellulære effekter. 223Ra er virkestoffet i legemiddelet AlpharadinTM som for tiden utprøves i klinikk under en fase III studie. Legemiddelets ...
(Master thesis / Masteroppgave, 2008)
(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)
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)
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)
(Master thesis / Masteroppgave, 2008)
I denne oppgaven ser jeg på bruken av et Personal Response System (PRS) i mekanikkurset på Universitetet i Oslo. Dette fungerer slik at foreleser stiller flervalgsspørsmål i plenum, og studentene kan svare ved å trykke på ...
(Master thesis / Masteroppgave, 2008)
If a future hydrogen society is to be established, a highly efficient solid-state hydrogen storage material must be found. The metal-N-H system, which is one of the new promising candidates, has been given considerable ...
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, 2007)
For a robot to interact with humans around its environment is necessary to achieve a communication that seems as natural as possible. Humans when talking to each other, look directly into their faces to indicate attention. ...
(Master thesis / Masteroppgave, 2008)
In this thesis we have annealed hydrothermally (HT) grown ZnO samples at temperatures ranging from 600C to 1600C, and examined the effects on the lithium content, the resistivity and the surface topography. Starting with ...
(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 ...
(Master thesis / Masteroppgave, 2008)
Standard Modellen (SM) beskriver det meste av det vi har observert i eksperimenter fram til i dag. Allikevel er SM ikke sett på som en komplett teori, men heller en effektiv teori som fungere bra opp til et visst energinivå. ...
(Master thesis / Masteroppgave, 2008)
The Micro-Electro-Mechanical Systems (MEMS) have found wide application in medicine these days. Lots of them are used in form of implanted devices which usually demand complicated design and fabrication requirements. One ...
(Master thesis / Masteroppgave, 2008)
(Master thesis / Masteroppgave, 2007)
In this paper we aim to study a small step in the physicist marathon that is the unifica- tion of two field theories that, while similar in some senses, are rather different in other, namely gravity and electromagnetism. ...
(Master thesis / Masteroppgave, 2008)
Study of galactic dynamics using models based on general relativity.
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)
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, 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)
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, 2008)
I denne master oppgaven ser jeg på teorien bak en Optisk pinset, og på de forskjellige måtene man kan kalibrere pinsetten på. I tillegg ble Dynamisk lyspredning (DLS) brukt til å måle partikkel størrelsene
(Master thesis / Masteroppgave, 2008)
Calculations of the transition strength of C16 and study the structure of nuclei near C16 in order to understand the degrees of freedom involved in the low-lying states of these nuclei. The main emphasis, in addition to ...
(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 ...
Analyse av solvarmeanlegget i Bjørnveien 119 i Oslo Restricted Access
(Master thesis / Masteroppgave, 2007)
Sammendrag
Oppgaven presenterer en undersøkelse av energibruk og solenergidekning i sameiet Bjørnveien 119 i Oslo. Bygget er spesielt både ved plassering av solfangere på sydfasade og ved kombinasjonen av sol og gass til ...
(Master thesis / Masteroppgave, 2008)
In this thesis we studied method of subtractive interference cancellation applied to multiuser systems. We developed algorithms for simulation of a point-to-point communication system that uses the techniques of interference ...
(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, 2008)
(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 ...
(Book / Bok / PublishedVersion, 2007)
I artikkelsamlingen kan du lese om pedagogiske endringer i krysningspunktet mellom teknologi, organisering og læring. Du finner artikler fra en rekke ulike fagmiljøer som beskriver prosjekter av mange ulike slag. Erfaringene ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2006)
We explore the possibility of combining density functional theory DFT and electron energy loss spectroscopy EELS to determine the dielectric function of materials. As model systems we use the skutterudites CoP3, CoAs3, ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2006)
Background
Exposure to ambient particulate matter has been associated with a number of adverse health effects. Particle characteristics such as size, surface area and chemistry seem to influence the negative ...
(Doctoral thesis / Doktoravhandling, 2007)
This thesis concerns light and drug dosimetry for photodynamic cancer treatment – a treatment modality where a photosensitizer uses the energy of light to damage biological matter. Porphyrin precursors were used as prodrugs ...
(Doctoral thesis / Doktoravhandling, 2007)
The present work is a study of the electronic structure and bonding of the class of materials often called skutterudites. These materials have received much attention during the past decade, largely because their thermoelectric ...
(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 ...
(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, 2007)
The mechanical role of seepage forces on hydraulic fracturing and failure patterns was studied both by the analytical methods of the continuum mechanics and by numerical simulations. Seepage forces are frictional forces ...
(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 ...
(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 ...
(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 ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2007)
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2005)
(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 ...
(Doctoral thesis / Doktoravhandling, 2008)
Almost a century after the discovery of the atomic nucleus, all of its secrets are still not revealed. This dissertation presents experimental observations on statistical properties of medium-mass nuclei at high temperatures. ...