Nuklearmedicinsk bildtagning med hjälp av radiofarmaka är ett viktigt verktyg för att studera biologiska processer och humansjukdomar. Bildtagning sker ofta med en detektor i kombination med en kollimator. En typ av kollimering är pinnhålskollimering, där ett pinnhål i ett opakt material placeras mellan en källa och en detektor. Pinnhålet fyller samma funktion som en optisk lins då emitterade fotoThe focus of this dissertation is the use of pinhole collimation in Nuclear Medicine. A pinhole is a single aperture in an opaque material that is placed between the detector and source of interest, and photons must pass through the hole to reach the detector. The choices of pinhole parameters, e.g. the pinhole material and size of the opening, are closely linked to the performance of the detector

P1 and Pk are glycosphingolipid antigens synthesized by the A4GALT-encoded α1,4-galactosyltransferase, using paragloboside and lactosylceramide as acceptor substrates, respectively. In addition to the compatibility aspects of these histo-blood group molecules, both constitute receptors for multiple microbes and toxins. Presence or absence of P1 antigen on erythrocytes determines the common P1 (P1+

The article argues that the way Anabaptist history and theology is commonly narrated needs to be reshaped. A fundamental question is asked: Did women have positions of power in the early Anabaptist movement? Two points are considered: 1) How is power understood? and 2) On what premises can the history of Anabaptist women be written? These two points are put in relation to portraits of three women

Male breast cancer (MBC) is rare and largely hormonally driven. Here, the authors examine the action of steroid hormone receptors in male and female breast cancers and find gender selective hormone receptor action that associates with the survival of MBC patients.

Electronic and spin structure of the Dirac-cone-like topological surface and valence band states were studied experimentally and theoretically for topological insulator with fractional stoichiometry Bi1.5Sb0.5Te1.8Se1.2 which is considered as one of the best candidates for efficient spin-polarized current generation. By means of spin- and angle-resolved photoelectron spectroscopy we demonstrate th

Conjugated polymers have been widely studied as flexible, versatile semiconductors in organic electronics. However, the material stability is one of the problems limiting their applications. Thus, understanding the degradation process of conjugated polymers is crucial. In this work, we monitored the chain scission of the model polymer MEH-PPV in chloroform solutions under different conditions by a

When it comes to religion, lack of conclusive evidence leads many reflective thinkers to embrace agnosticism. However, pure agnosticism does not necessarily have to be the final word; there are other attitudes one might reasonably adopt in a situation of epistemic uncertainty. This article concentrates on J. L. Schellenberg's proposal that non-doxastic propositional faith is available even when be

Objectives: Pulmonary arterial hypertension and chronic thromboembolic pulmonary hypertension are severe diseases with complicated treatment that need care at specialist clinics. The aim was to investigate changes in the patients' perceptions on coping, social support and received information when attending a newly started nurse-coordinated pulmonary arterial hypertension-outpatient clinic.Methods

Between the two world wars the typography of the Romanian newspapers followed the general development and the use of serif typefaces for the body type. The concern for the typography of the newspaper was rather conservative and worked a lot with the same kind of typography used for the fiction literature. After the communist take over in 1943 the typography of the newspapers followed the standards

8000 years ago, prior to Neolithic agriculture, Europe was mostly a wooded continent. Since then, its forest cover has been progressively fragmented, so that today it covers less than half of Europe's land area, in many cases having been cleared to make way for fields and pasture-land. Establishing the origin of Europe's current, more open land-cover mosaic requires a long-term perspective, for wh

The article deals with the tensions and conflicts between the local regional Kurdish government of Iraqi Kurdistan and the ways the difficulties and tensions coped with.

(Neuro)psychiatric diagnoses such as attention deficit hyperactivity disorder (ADHD) is a rapidly growing and globally increasing phenomenon, not least in different educational contexts such as in family and in school. Children and youths labelled as ADHD are challenging normative claims in terms of nurturing and education, whereas those labelled as ADHD are considered a (future) risk for society (Neuro)psychiatric diagnoses such as attention deficit hyperactivity disorder (ADHD) is a rapidly growing and globally increasing phenomenon, not least in different educational contexts such as in family and in school. Children and youths labelled as ADHD are challenging normative claims in terms of nurturing and education, whereas those labelled as ADHD are considered a (future) risk for society

Despite their widespread use in non-invasive studies of porous materials, conventional MRI methods yield ambiguous results for microscopically heterogeneous materials such as brain tissue. While the forward link between microstructure and MRI observables is well understood, the inverse problem of separating the signal contributions from different microscopic pores is notoriously difficult. Here, w