Filtyp
The lactic acid bacterium, Streptococcus thermophilus, is used in the dairy industry in mixed cultures with Lactobacillus delbrueckii subsp. bulgaricus for the production of yoghurt. Many strains of S. thermophilus produce exopolysaccharides (EPSs) which affect the texture and viscosity of fermented food products. However, the production of EPSs by S. thermophilus is low and variable, and better k
Introduction Aniridia (iris more or less missing), is a congenital, dominant, inherited, serious and sight-threatening disease, most often appearing as an isolated eye disorder. It is caused by mutations in the PAX6 gene, the master gene of the development of the eye. Typically, Aniridia causes severe visual impairment. In addition to glare caused by the iris defect, underdevelopment of the macula
Popular Abstract in Swedish Som en följd av de senaste årens förtätningstrend har stadens täthet blivit en aktuell stadsbyggnadsfråga. Förtätning är ett komplext fenomen som berör en rad centrala egenskaper hos staden. Förtätning är också en kontroversiell stadsbyggnadsstrategi. Det är motsättningen mellan förtätning och friytor som den här avhandlingen tar sin utgångspunkt i. Krymper mellanrummenThe new interest in density displayed by professional town planners and town-planning researchers is related to the present densification of the urban environment in many towns and cities. Research on densification is primarily concerned with the link between urban form and sustainable development. The point of departure of this thesis is to consider what a denser housing environment will mean to
Popular Abstract in Swedish Avhandlingens huvudfråga är hur språket används i skolämnet naturkunskap i två mångkulturella gymnasieklassrum. Språket ses som vår viktigaste resurs för utveckling och lärande i olika skolämnen. Att elever får rikliga tillfällen att lära sig hantera ämnesrelevant språk blir enligt ett sådant synsätt avgörande för vilket språk de utvecklar och vad de lär sig. SpråkutvecThe purpose of the thesis is to investigate how language is used in the school subject Natural Science in two multi-cultural upper seconday classrooms. Previous research points to the fact that second language students are not successful in their school work. The reason usually given is the students' inadequate knowledge of their second language. Today's curricular directives of the Swedish school
OBJECTIVE: To analyse the frequency of some extrahepatic manifestations of chronic hepatitis C virus (HCV) infection in northern European patients, including a postulated association between HCV and primary Sjogren's syndrome (SS). DESIGN: Cohort study. SETTING: Department of Medicine, Malmo University Hospital, Sweden. PATIENTS: Twenty-one patients with HCV infection and 53 with primary SS (accor
Popular Abstract in Swedish Denna avhandling är resultatet av min doktorandutbildning vid Kvartärgeologiska avdelningen, Geologiska institutionen, Lunds universitet. Avhandlingen baseras på pollenanlytiska undersökningar av ett antal lokaler i södra Sverige. I denna syntes sammanfattas resultaten av undersökningarna. Introduktion och bakgrund Avsikten med avhandlingen har varit att studera etablHigh resolution pollen analysis was carried out on five peat profiles from small forest hollows at four sites in southern Sweden. The general aim was to investigate the establishment of Fagus sylvatica and Picea abies at stand-scale. The sites used for this study were all located within the area where the present distribution limits of Fagus and Picea overlap each other. The results from the diffe
Study Type - Diagnostic (case series) Level of Evidence 4 What's known on the subject? and What does the study add? It is well known that CIS is a major risk factor for muscle-invasive bladder cancer and that this entity can be difficult to diagnose. Taking cold-cup mapping biopsies from different areas of the bladder (BMAP) is commonly used in patients at risk of harbouring CIS. The diagnostic ac
This report presents a project at Lund University Libraries (LUB) during the fall of 2012, with the object to identify areas where the present research support services ought to be developed and strengthened. The project is three folded and contains a) a literature review focusing on definitions and examples of research support services as well as researchers’ needs and experiences of support serv
The identification and classification of bacteria was initially performed with morphological methods applied on cultivated bacteria. It was not until the mid 1970s, when sequences of ribosomal RNA were discovered to be useful for bacterial evolution, that a new era started. This method showed to be far more accurate for bacterial identification. Today, identification of bacteria is totally dominat
Popular Abstract in Swedish Diabasgångar (eng. dolerite dykes) bildas när järn- och magnesiumrika (mafiska) smältor från manteln transporteras upp genom jordskorpan och så småningom kyls av och kristalliserar i sprickor på djupet. Gångarna kan bli hundratals meter breda och kan uppträda i stort antal och bilda s.k. gångsvärmar vilka är uttryck för perioder då jordskorpan har utsatts för extensioneDolerite dykes are formed when iron- and magnesium-rich (mafic) mantle-derived magmas ascend through the lithosphere (upper part of the mantle) and crystallize as ‘hydro-fractures’ within the crust. Dykes may exist in great numbers to form dyke swarms (linear or radiating), which can be linked to time periods of continental break-up, or attempted break-up events, associated with voluminous volcani
Popular Abstract in Swedish Under dagen, när det är ljust, har fåglar både överlägsen synskärpa och färgseende jämfört med de flesta andra djur, inklusive människan. Men vad händer när det skymmer och under natten när det är mörkt? Vi människor tappar mycket av vår synskärpa i svagt ljus och vi förlorar vårt färgseende när det blir mörkare än ungefär en månupplyst natt. Det här beror på att ljusetBirds use vision to guide navigation, foraging and mate choice, and studies of the limitations in bird visual perception are most helpful for the understanding of bird ecology. Here, I present four studies of bird vision in bright and dim light. Paper I is a quantification of how sensitive colour vision modelling is to variation in data, such as the spectral sensitivity of photoreceptors and recep
S-phase fraction (SPF), estimated in the flow cytometric DNA histogram, is a prognostic factor in breast cancer. There are, however, some inherent difficulties in the estimation of SPF, such as the influence of debris, aggregates, and normal cells. Most of the available SPF calculation principles try to consider these difficulties, but so far no consensus has been reached with regard to which prin
Background: In observational studies, men with prostate cancer treated with gonadotropin-releasing hormone (GnRH) agonists had a higher risk of cardiovascular disease (CVD) compared to men who had undergone orchiectomy. However, selection bias may have influenced the difference in risk. Objective: To investigate the association of type of androgen deprivation therapy (ADT) with risk of CVD while m
Background: Oral anticoagulation therapy is recommended for the prevention of recurrent ischemic stroke in patients with atrial fibrillation (AF). Current guidelines do not provide evidence-based recommendations on optimal time-point to start anticoagulation therapy after an acute ischemic stroke. Non-vitamin K antagonist oral anticoagulants (NOACs) may offer advantages compared to warfarin becaus
Cloud simulations and cloud-climate feedbacks in the tropical and subtropical eastern Pacific region in 16 state-of-the-art coupled global climate models (GCMs) and in the International Pacific Research Center (IPRC) Regional Atmospheric Model (iRAM) are examined. The authors find that the simulation of the present-day mean cloud climatology for this region in the GCMs is very poor and that the cl
With today's improved measurement and data storing technologies it has become common to collect data in search for hypotheses instead of for testing hypotheses---to do exploratory data analysis. Finding patterns and structures in data is the main goal. This thesis deals with two kinds of structures that can convey relationships between different parts of data in a high-dimensional space: manifolds
We have studied the presence of novel inflammatory markers as soluble urokinase plasminogen activator receptor (suPAR) and natural IgM antibodies directed against phosphorylcholine (αPC-IgM) in Swedish diabetic patients (n = 164) and in healthy control subjects (n = 41). SuPAR is expressed by several types of immune cells and has been shown to be a marker of disease severity and predict mortality
Background: The Major Histocompatibility Complex (MHC) plays a central role in immunity and has been given considerable attention by evolutionary ecologists due to its associations with fitness-related traits. Songbirds have unusually high numbers of MHC class I (MHC-I) genes, but it is not known whether all are expressed and equally important for immune function. Classical MHC-I genes are highly
N-acylated substituted β 3 oligoamides are known to form unique supramolecular nanorods based on a 3-point hydrogen bond self-assembly motif. This motif is an intermolecular extension of the hydrogen bonding network that stabilizes the 14-helix secondary structure unique to β 3 oligoamides. Acetylation of the N-terminus of the molecule provides the necessary third hydrogen bond pair of the motif.
Animal coloration is a multifaceted trait with many ecological roles and related to a variety of developmental and physiological processes. Consequently, coloration is often subject to a variety of selective pressures, leading to the evolutionary maintenance of variation. In this study, we investigated hypotheses related to the maintenance of dorsal color variation in wood frogs (Rana sylvatica).
