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Realistic tissue dosimetry models using Monte Carlo simulations. Applications for radionuclide therapies

Popular Abstract in Swedish Vid radionuklidterapi används ett radioaktivt läkemedel för behandling av vissa sjukdomar, bl.a. struma och vissa tumörsjukdomar. En radionuklidmärkt målspecifik molekyl administreras till patienten och läkemedlet transporteras via blodomloppet till det sjuka området där molekylens egenskaper gör att läkemedlet ansamlas. Den joniserande strålningen som sänds ut från läkRadionuclide therapy (RNT) is a generic term for treatment modalities that use a radionuclide labeled to a target-specific molecule. This so-called radiopharmaceutical accumulates in the target, where the ionizing radiation damages the cells. At sufficient levels of radiation, the cells cannot repair themselves. The quantity of the energy deposited in a target region is referred to as the absorbed

On the Road. Paving stones past and present

We archaeologists are sensitive to the messages people convey through material culture. In Lund, paving stones carry a powrful message about Lund's 1,000-year-old history. However, paving stones are in fact a fairly recent phenomenon dating from the late 19th century. Thus, paving stones do not represent continuity in the longue duree, but they do represent our idea of what the past was like.

Similar software systems

During the last ten years or so, much effort has been spent on developing software architecture by analogy with hardware architecture from where the idea seems to originate. Much of the work has been devoted to specifying standard program units, called components, and their connections. The architecture is then the specific organization of these components and connections. In this paper, I suggest

FACE Disabled People, Technology and Internet

Popular Abstract in Swedish Denna avhandling baserar sig på de erfarenheter av Internet som ett antal människor med betydande kroppsliga funktionsnedsättningar gjort. Personerna i studierna är erfarna och duktiga dator- och Internetanvändare och har få eller inga funktionshinder i dator och online världen, men däremot stora funktionshinder i den fysiska världen. Deras functioning, förmåga attThis thesis is based on the Internet experiences of people with significant mobility/physical impairments who are proficient and experienced computer users in their computer world but have limitations in mobility that severely restrict their functioning in the physical world. The Internet functioning of this group is analysed by means of the factors attitude, control and enabling, with the m

Pensionsreformen - hur var den möjlig?

Många pensionssystem är ohållbara. Sverige är ett av de länder som lyckats genomföra en pensionsreform. Kapitlet ger en politisk-ekonomisk analys av hur detta var möjligt.

Theoretical Reflections of Solvation in Polar Media

Popular Abstract in Swedish För mer än hundra år sedan visade Hofmeister och Lewith att vissa salter har mer eller mindre förmåga att destabilisera ett protein upplöst i vatten. Ungefär samtidigt, visade Arrhenius att salter upplösta i vatten dissocierar i olika joner. Joner är laddade stabila partiklar som är mycket viktiga för stabiliteten av kemiska och biologiska system. Det har under de senasUsing experiments it is rather easy to measure things on the macroscopic length scale, while it is much harder to measure something in the microscopic world like molecular structure. The opposite is true in theoretical chemistry. It is today rather easy to calculate a bond distance or a coordination number, but it is not possible to perform a calculation aiming at the description of macroscopic ph

Use of Thermal Manikins in International Standards

The first standards based on thermal manikin measurements were developed in the 1980s. In the Nordic countries tests for thermal insulation measurements of sleeping bags and cold protective clothing were developed. Similar standards were published in Germany by DIN and in the US by ASTM. At a European level, EN 342 describes test methods and requirements for cold protective clothing based on manik

Reconstruction from Image Sequences by means of Relative Depths

The paper deals with the problem of reconstructing the locations of n points in space from m different images without camera calibration. It shows how these problems can be put into a similar theoretical framework. A new concept, the reduced fundamental matrix, is introduced. It contains just 4 parameters and can be used to predict locations of points in the images and to make reconstruction. We a

Condition based maintenance of gas turbines using simulation data and artificial neural network: A demonstration of feasibility

Gas turbine maintenance is crucial due to high cost for the replacement of its components and associated loss of power during shutdown period. Conventional scheduled maintenance, based on equivalent operating hours, is not the best alternative as it can require unnecessary shut downs. Condition based maintenance is an attractive alternative as it decreases unnecessary shut downs and has other adva

Romancing the Stone: play between romance and affection

Despite many years of implementations, issues surrounding the success or failure of information systems are still shrouded in mystery. In a quest to improve business outcomes from such systems an IS analyst should have a key role to play. Organisational IS can be seen as a composition of indi-vidual and organisational learning processes, and as such is in a constant state of change. Knowledge as a