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The interfacial behavior of aqueous solutions of four different neutral polymers in the presence of sodium dodecyl sulfate (SDS) has been investigated by surface tension measurements and ellipsometry. The polymers comprised linear poly(ethylene oxide) with low and high molecular masses (10 (3) and 10 (6) Dalton (Da), respectively), and two high molecular mass methacrylate-based comb polymers conta

Dynamic chromatin structure is a fundamental property of gene transcriptional regulation, and has emerged as a critical modulator of physiological processes during cellular differentiation and development. Analysis of chromatin structure using molecular biology and biochemical assays in rare somatic stem and progenitor cells is key for understanding these processes but poses a great challenge beca

In this work, we propose a novel subspace-based estimator of periodicities in symbolic sequences. The estimator exploits the harmonic structure naturally occurring in symbolic se- quences and iteratively forms the estimate of the periodicities using a MUSIC-like formulation. The estimator allows for alphabets of different sizes, but is here illustrated using both simulated and real DNA measurement

Respiratory viral infections cause exacerbations of asthma and COPD that cannot be effectively treated today. Thymic Stromal Lymphopoietin (TSLP) is an upstream epithelial cytokine linking the innate and adaptive immune system. Viral stimuli induce epithelial overexpression of TSLP in asthma and COPD. We hypothesise that TSLP switches on Th2-type inflammation in severe asthma/COPD. A deficient ant

To identify differences in seed lignin content, 520 randomly chosen independent lines were screened in mutagenized oat population and lines with the seed lignin levels ranging from 20 to 63 gkg(-1) were identified. In the commercial variety Belinda, from which the mutated population was developed, seed lignin level was determined to be 41 g kg(-1). In Assiniboia, a Canadian low lignin variety, it

Precipitation profiles of spot immunoprecipitate assay (SIA) reactions in gel are shown to have characteristics analogous to classic precipitin curves representing such immune reactions in solution. Thus SIA profiles of precipitated human albumin (HSA) and anti-HSA as checkerboard analysis permit: (1) determination of optimal proportions of antibody and antigen, (2) titration of antiserum as to an

Reproductive success usually declines in the course of the season, which may be a direct effect of breeding time, an effect of quality (individuals with high phenotypic or environmental quality breeding early), or a combination of the two. Being able to distinguish between these possibilities is crucial when trying to understand individual variation in annual routines, for instance when to breed,

Background The effectiveness of cervical cancer screening programs differs widely in different populations. The reasons for these differences are unclear. Routine and comprehensive audits have been proposed as an ethically required component of screening. We performed a nationwide audit of the effectiveness of the Swedish cervical cancer screening program. Methods We identified all invasive cervic

Oestrogen is not only a sex hormone but also an important regulator of the immune system. Expression of the heavy chain of IgM (mu) is essential for B-cell differentiation. However, a small number of IgA-positive B cells can be found in mice lacking the mu chain (mu MT-/-). The aim of this study was to investigate the effects of oestrogen on this alternative B-cell pathway in mu MT-/- mice. Our re

A molecular level understanding of the structural reorganization accompanying interfacial electron transfer is important for rational design of solar cells. Here we have applied XTA (X-ray transient absorption) spectroscopy to study transient structures in a heterogeneous interfacial system mimicking the charge separation process in dye-sensitized solar cell (DSSC) with Ru(dcbpy)(2)(NCS)(2) (RuN3)

α1-microglobulin (A1M) is a 26 kDa plasma and tissue protein with reductase activity and radical- and heme-binding anti-oxidative functions. In addition, exposure of A1M to hemoglobin has been shown to induce proteolytic elimination of a C-terminal tetrapeptide yielding a heme-degrading form, truncated A1M (t-A1M). Myeloperoxidase (MPO), a heme-containing enzyme that catalyzes the production of fr

The long-range order in strongly coupled dipolar systems has been studied using large-scale simulations for systems containing up to 100 000 particles. It is found that the boundary conditions used strongly influence the result. It is found that a periodic system modeled with the minimum image approximation yields an artificial order, whereas the same system described using the Ewald summation tec

The purpose of this thesis is to investigate whether the risk attitudes of experts in risk management, i.e. the group of experts participating in the study made by Abrahamsson and Johansson (2006), comply with the preferences of the general public. A major focus of the thesis is the development of the experimental setup, which is based on the trade off method developed by Wakker and Deneffe (1996)

This thesis is an exploratory study with the aim to identify and analyze similarities and differences between different actors perspective on adequate and equal protection against accidents. The study shows that no common understanding of the meaning of the terms adequate and equal has been reached since the Civil Protection Act (LSO) was taken into use. This has caused a non-homogenous perspectiv

I uppsatsen presenteras en kartläggning av den italienska poeten och filmskaparen Pier Paolo Pasolinis teoretiska utläggningar kring filmen som "verklighetens semiologi". Resonemangen kopplas här samman med Pasolinis idéer kring "den poetiska filmen" och begreppet "filmpoesi", vilka sedan förankras i en presentation av ett antal utvalda närstudier. I dessa diskuteras

In November 2014 was the 25th anniversary of the fall of the Berlin wall. Though east and west Berlin, and Germany as a whole, have been reunited for several years, the differences between east and west are still present in different discourses. The aim of this essay is to examine the view on East Germany/GDR in the narratives of left party Die Linke, trough analysis of four texts related to anniv

The aim for this study was to examine how adolescents well-being influences their self-report of different family issues. The empirical material was based upon a study including 88 adolescents in a Swedish upper level lower secondary school that took part in autumn 2014. The theoretical approach was logical positivism with a hypothetic-deductive method where a survey consisting of psychometric mea