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Verification of dose calculations with a clinical treatment planning system based on a point kernel dose engine

Dose calculations with a collapsed cone algorithm implemented in a clinical treatment planning system have been studied. The algorithm has been evaluated in homogeneous as well as in heterogeneous media, and the results have been compared to measurements and Monte Carlo simulations. Commonly encountered clinical beam configurations as well as more complex geometries have been pursued to test the l

Interkulturell förståelse i engelskundervisning - en möjlighet.

Popular Abstract in Swedish Idag behöver människor som talar, tänker och lever på olika sätt mer än någonsin kunna kommunicera med varandra. Ett självklart språk för dessa kontakter är för en svensk ofta engelska. Det lär sig varje elev under minst tio år i vår skola. Men för att kunna förstå andra bättre, fordras också att vi blir medvetna om skilda sätt att uppfatta världen omkring oss. Vi behövThe aim of this study is to examine the prospects of developing intercultural understanding through English as a foreign language (EFL) education in the Swedish comprehensive school. This overall aim is split into two subordinate aims: (1) to analyse and problematize the intercultural dimension of EFL as three discourses, research discourse, authority discourse and teacher discourse; (2) to relate

Exploring central and peripheral diversity in antibody evolution.

The antigen-binding site, the paratope, of an antibody can be seen as being composed of a central core and a more peripheral area situated at its rim. Naturally these regions acquire their diversity using different mechanisms and they also have dissimilar roles, as they contribute differently to the binding interaction. Also, antigens of different size utilize these regions differently; while hapt

Mathematical Methods of a Pulp and Paper Mill Scheduling Problem

Mathematical methods for production scheduling of a complex integrated pulp and paper mill are discussed. The scheduling problem is formulated as an optimal control problem for a multivariable deterministic system. A method of solution for the problem, using optimal control theory, is derived. The method developed is suitable for an on-line process control computer.

UV-induced changes in pigment content and light penetration in the fruticose lichen Cladonia arbuscula ssp. mitis

The response of the lichen, Cladonia arbuscula (Wallr.) Flot. ssp. mitis (Sandst.) Ruoss to enhanced UV-B (280-315 nm) radiation was investigated with respect to: (a) changes in phenolic content; (b) differential pigment accumulation under visible and UV radiation with increasing distance from thallus apices; and (c) the internal distribution of UV-B radiation within the thallus measured with quar

Development of diabetes is retarded by ACE inhibition in hypertensive patients - a subanalysis of the Captopril Prevention Project (CAPPP)

Objective The Captopril Prevention Project (CAPPP) was designed as a prospective intervention trial comparing the effect of a treatment based on the angiotensin-converting enzyme (ACE) inhibitor captopril with that of a conventional diuretic and/or beta-blocker-based therapy, in 10 985 hypertensive patients. There was no difference in the primary cardiovascular morbidity and mortality endpoint. A

Down-regulation of insulin receptor substrates (IRS)-1 and IRS-2 and Src homologous and collagen-like protein Shc gene expression by insulin in skeletal muscle is not associated with insulin resistance or type 2 diabetes.

To examine whether altered gene expression of insulin receptor substrates (IRS)-1 and IRS-2 and Src homologous and collagen-like protein Shc is an inherited trait and is associated with muscle insulin resistance or type 2 diabetes, we measured mRNA levels of these genes by a relative quantitative RT-PCR method in muscle biopsies taken before and after an insulin clamp from 12 monozygotic twin pair

Recension av Inga Hellberg: ”Det fackliga förtroendet. En studie av ombudsmän och experter 1950–1991”

Artikeln recenserar Inga Hellbergs bok ”Det fackliga förtroendet. En studie av ombudsmän och experter 1950–1991” (Atlas 1997). Hellbergs studie behandlar professionaliseringstendenser hos ombudsmän och experter inom LO-området. Även Carl-Gösta Hanssons bok "Fackliga karriärer" (Borea 1996) tas upp till diskussion i artikeln, varvid frågan om facklig professionalisering vidgas till TCO- och SACO-sf

Biodegradation of phenol at low temperature using two-phase partitioning bioreactors

Two-phase partitioning bioreactors offer many advantages for the removal of toxic pollutants. In particular, such systems can be loaded with very large quantities of pollutants without risks of microbial inhibition, they are self-regulated and they prevent the risks of hazardous pollutant volatilisation during aerobic treatment. However, their potential has never been tested at low temperatures. P

Ansträngningsutlöst värmeslag gav svår lever- och njursvikt. Leverdialys med MARS prövades för första gången vid detta tillstånd

We present a case of exertional heatstroke, uncommon in the Scandinavian climate zone. Despite early recognition and treatment, our patient underwent a complex clinical course with both renal and liver failure, requiring 4 months of hospital stay and a convalescens of more than a year. In previous reported cases of severe liver failure following exertional heatstroke, liver transplantation has bee

Lower Extremity Function in Arthritis

The aim of this thesis was to develop and apply self-registered and observed measures of physical function in people with arthritis in the lower extremity. In Paper I, 181 subjects from the Swedish Knee Arthroplasty Register who were satisfied with their primary knee arthroplasty were studied. 44% of the medical records included reports of pain in the replaced knee at the same time as the patient