The platelet-derived growth factor (PDGF) alpha and beta receptors undergo dimerization as a consequence of ligand binding. Depending on the PDGF isoform (PDGF-AA, -AB or -BB), homodimers or heterodimers of receptors are formed. In this study, we have used transfected porcine aortic endothelial cells, coexpressing cDNAs for the alpha receptor and the beta receptor at comparable levels, to investig

Using the concepts of social norms and social reality, this chapter explores why legal reforms that aimed to facilitate the formalization of informal workers have largely failed to influence vulnerable groups in developing countries. It explores the use of legal reforms in order to achieve development and poverty reduction. Using empirical material from a qualitative study conducted in Colombia am

Popular Abstract in Swedish Synd och skam. Ogifta mödrar på svensk landsbygd, 1680-1880. Avhandlingens utgångspunkt har varit ogifta mödrar på svensk landsbygd i ett långtidsperspektiv, 1680-1880. Arbetet är kvinnohistoriskt och utgår från en önskan att synliggöra betydelsen av kön i det äldre samhället. Hur tänkte och resonerade man kring kön och sexualitet i det förindustriella bondesamhället? The situation of unmarried mothers in Swedish rural society during 1680–1880 is the subject of this thesis. It focuses on the judicial and religious discourse concerning extra-marital sexuality. The state felt duty-bound to control extra-marital sexuality, and this resulted in a dynamic legislative arena. An important objective has been to study the local consequences of legislative changes and ex

Background: Despite considerable racial and geographical differences in human phenotypes and in the incidence of diseases that may be associated with sex steroid action, there are few data concerning variation in sex steroid levels among populations. We designed an international study to determine the degree to which geography and race influence sex steroid levels in older men. Methods: Using mass

Cohort studies have indicated an association between prenatal smoking exposure and children's motor difficulties. However, results are inconsistent and exposure is most often self-reported. Studies indicate that measurement of serum cotinine can result in a more accurate status of smoking exposure in comparison with self-report.

Previous studies have indicated that the expansion of fire seals and fire stoppers will be dependent on the heat exposure. Standardized methods for classification includes exposure to a rapid heat exposure of the product that is tested, but this might not always be the worst case scenario for the product. In this paper a series of tests are presented in order to study how a graphite based intumesc

Abstract not available

This paper contains a simplified framework for the analysis of sequences of images taken by uncalibrated cameras. It is assumed that the correspondences between the points in the different images are known. Corresponding points in a sequence of n images are related to each other by a fixed n-linear form. This form is an object invariant property, closely linked to the motion of the camera relative