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Mental health problems among adolescents have become a major public health issue, and it is therefore important to increase knowledge on the contextual determinants of adolescent mental health. One such determinant is the socioeconomic structure of the neighbourhood. The present study has two central objectives, (i) to examine if neighbourhood socioeconomic deprivation is associated to individual
Background: Chlamydia trachomatis is the most common cause of sexually transmitted infections globally and the leading cause of preventable blindness in the developing world. There are two biovariants of C trachomatis: 'trachoma', causing ocular and genital tract infections, and the invasive 'lymphogranuloma venereum' strains. Recently, a new variant of the genital tract C trachomatis emerged in S
Almost every day a school fire occurs in Sweden. In most cases arson is the cause of the fire. The losses for these arson fires are considerable. In this report a number of cases studies have been conducted on school fires in Sweden. The project envisages obtaining more knowledge on the technical factors that influence the spread of fires with arson in schools. Solutions to mitigate the fire sp
With the exponential growth of the World Wide Web, automated subject classification of Web pages has become a major research issue in information and computer sciences. Organizing Web pages into a hierarchical structure for subject browsing is gaining more recognition as an important tool in information-seeking processes. In this thesis, different automated classification approaches, focusing on
Good decision-making relies on accurate, timely and reliable information. This can be supported by having intelligent packaging which allows data on the whereabouts and condition of goods to be automatically captured along a supply chain. This research reveals that, although interest in intelligent packaging in Swedish manufacturing industries is high, actual use is limited. Nevertheless, this res
Background: Evidence has accumulated which suggests that sex steroids influence colorectal cancer development and progression. We therefore assessed the association of repeat polymorphisms in the estrogen receptor beta gene (ESR2) and the androgen receptor gene (AR) with colorectal cancer risk and prognosis. Methods: The ESR2 CA and AR CAG repeat polymorphisms were genotyped in 1798 cases (746 fem
Genome-wide association (GWA) studies usually detect common genetic variants with low-to-medium effect sizes. Many contributing variants are not revealed, since they fail to reach significance after strong correction for multiple comparisons. The WTCCC study for hypertension, for example, failed to identify genome-wide significant associations. We hypothesized that genetic variation in genes expre
Scanty data are available on the incidence (i.e., the absolute risk) of second cancers of the head and neck (HN) and its pattern with age. We investigated this issue using data from a multicentric study of 13 population-based cancer registries from Europe, Canada, Australia and Singapore for the years 1943-2000. A total of 99,257 patients had a first primary HN cancer (15,985 tongue, 22,378 mouth,
Elevated levels of tropospheric ozone can significantly impair the growth of crops. The reduced removal of CO2 by plants leads to higher atmospheric concentrations of CO2, enhancing radiative forcing. Ozone effects on economic yield, e. g. the grain yield of wheat (Triticum aestivum L.), are currently used to model effects on radiative forcing. However, changes in grain yield do not necessarily re
Hjalmar Söderberg (1869–1941) published some seventy short stories in five collections, Historietter (1898), Främlingarna (1903), Det mörknar öfver vägen (1907), Den talangfulla draken (1913) and Resan till Rom (1929). The present study explores Söderberg’s short fiction from a genre-historical and genre-theoretical perspective. It investigates the characteristic traits of Söderberg’s short-story
ABSTRACT Titel: Music teachers’ discretionary power – possibilities and limitations. According to previous research in music education, during recent decades the working conditions for professional music teachers in schools have changed radically. The aim of this thesis is to investigate the working conditions of music teachers by focusing on their experiences of and ideas about discretionary pow
Recently, there has been a growing research interest in the co-gasification of biomass with coal to produce syngas and electricity in a sustainable manner. Co-gasification technology do not only decrease potentially the exploitation of a significant amount of conventional coal resources, and thus lower greenhouse gases (GHG) emissions, but also boost the overall gasification process efficiency. In
We used comparative studies to investigate how and why floral and bee fragrances evolve, including courtship odors collected by male Euglossa mixta to form their tibial bouquet, on Coiba Island and other Panama forests. Fragrances of four orchid genera, two used extensively by E. mixta - Coryanthes and Mormodes - and two never used, Clowesia and Catasetum - were also analyzed. From among 636 chemi
Although deaf children depend upon sight for communication, retinitis pigmentosa is present in 6 per cent of those with a profound hearing deficit. Usher syndrome type 1 (USH-1) is an autosomal recessive disease characterised by profound hearing impairment, absent vestibular function, and progressive loss of vision due to retinitis pigmentosa. Owing to the severe handicap of the combined disorders
1. We estimated the correlation between host phylogeographical structure and beta diversity of avian haemosporidian assemblages of passerine birds to determine the degree to which parasite communities change with host evolution, expressed as genetic divergence between island populations, and we investigated whether differences among islands in the haemosporidia of a particular host species reflect
Higher levels of circulating adiponectin have been related to lower risk of colorectal cancer in several prospective cohort studies, but it remains unclear whether this association may be causal. We aimed to improve causal inference in a Mendelian Randomization meta-analysis using nested case–control studies of the European Prospective Investigation into Cancer and Nutrition (EPIC, 623 cases, 623
Purpose: To evaluate the estrogen receptor coactivator amplified in breast cancer 1 (AIB1) as a prognostic marker, as well as a predictive marker for response to adjuvant tamoxifen and/or aromatase inhibitors, in early estrogen receptor-positive breast cancer. Method: AIB1 was analyzed with immunohistochemistry in tissue microarrays of the Danish subcohort (N = 1396) of the International Breast Ca
Den dokumentvillkorade garantin, som i praktiken vanligen betecknas som självständig, känneteck-nas av att villkoren i utfästelsen väsentligen endast innefattar villkor som refererar till att vissa angivna dokument presenteras för garanten. Dokumentvillkorade garantier förekommer vanligtvis i avtalsstrukturer som involverar ett flertal olika avtal och parter. De typer av avtal som omfattas av sådaDocumentary guarantees, in practice usually described as independent guarantees, are characterized by the fact that they essentially contain only conditions referring to whether or not certain specified documents are presented to the guarantor. A documentary guarantee is usually only one part of a contractual structure involving several contracts and parties. Such contracts give rise to special le
Peripheral tolerance is regulated by different types of regulatory T cells, including CD1-restricted T cells and CD4+CD25+ regulatory T (Treg) cells. This thesis has focused on the interactions between T cells and antigen presenting cells (APCs) and the immunregulatory function of TGF-b as two important factors regulating differentiation and activation of T cells in the periphery. In the first par
