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Symbiotic fungi that are essential for plant nutrient uptake investigated with NMP
The nuclear microprobe (NMP) technique using PIXE for elemental analysis and STIM on/off axis for parallel mass density normalization has proven successful to investigate possible interactions between minerals and ectomycorrhizal (EM) mycelia that form symbiotic associations with forest trees. The ability for the EM to make elements biologically available from minerals and soil were compared in fi
The design of a 3 GHz thermionic RF-gun and energy filter for MAX-lab
A new pre-injector has been designed for the MAX-laboratory. It consists of an RF-gun and a magnetic energy filter. The newly designed RF-gun geometry will be operated at 3 GHz in the thermionic mode using a BaO cathode. The pre-injector will provide a 2.3 MeV electron beam in 3 ps micro pulses to a new injector system currently under construction. (C) 2002 Elsevier Science B.V. All rights reserve
Diagnostic and prognostic aspects of anti-neutrophil cytoplasmic antibodies in systemic vasculitis
Primary systemic vasculitis is associated with a high mortality if left untreated and it is essential to make the diagnosis before permanent organ damage has occurred. In this thesis the diagnostic and prognostic significance of anti-neutrophil cytoplasmic antibodies (ANCA) in systemic vasculitis is investigated. The clinical significance of a capture enzyme-linked immunosorbent assay (ELISA) bas
The anti-apoptotic effect of leukotriene D-4 involves the prevention of caspase 8 activation and Bid cleavage
We have shown in a previous study that leukotriene D-4 (LTD4) signalling increases cell survival and proliferation in intestinal epithelial cells [ohd, Wikstrom and Sjolander (2000) Gastroenterology 119, 1007-1018]. This is highly interesting since inflammatory conditions of the bowel are associated with an increased risk of developing colon cancer. The enzyme cyclooxygenase 2 (COX-2) is important
Comparison of four scatter correction methods using Monte Carlo simulated source distributions
Scatter correction in SPECT is important for improving image quality, boundary detection and the quantification of activity in different regions. This paper presents a comparison of four scatter correction methods, three using more than one energy window and one convolution-subtraction correction method using spatial variant scatter line-spread functions. METHODS: The comparison is based on Monte
Clinical and social changes in severely mentally ill individuals admitted to an outpatient psychosis team: an 18-month follow-up study
Aim: The study investigated clinical and social changes during an 18-month follow-up period in a group (n = 76) of schizophrenic outpatients admitted to a newly implemented outpatient psychosis team. Changes related to level of contact with the psychosis team were also examined as well as aspects of the content of the treatment interventions and work situation from a staff perspective. Methods: St
Delayed stigma receptivity in Collinsia heterophylla (Plantaginaceae): Genetic variation and adaptive significance in relation to pollen competition, delayed self-pollination and mating-system evolution
To increase our knowledge about mating-system evolution, we need to understand the relationship between specific floral traits and mating system. Species of Collinsia (Plantaginaceae) vary extensively in mating system; this variation is associated with variation in floral morphology and development and with the timing of self-pollination. Counterintuitively, large-flowered, more outcrossing specie
Maktutövning och socialt bedrägeri som motståndsform
In the light of a brief review of the theories of power — in which the definitions of power are asked when, where and how is power executed? — the article defines power as the ability of an individual or a collective actor to cause, effect and prevent action in others and to achieve the desired results. The article then concentrates on a kind of power which is called acculturation. This appears in
Genetics of diabetic subtypes
Popular Abstract in Swedish There are two major types of diabetes mellitus, Type 1 Diabetes (T1D) and Type 2 Diabetes (T2D), however a number of subtypes have been defined and classified. Maternally Inherited Diabetes and Deafness (MIDD) and Maturity Onset Diabetes of the Young (MODY) are monogenic forms, whereas Latent Autoimmune Diabetes in Adults (LADA) is thought to be a polygenic subtype simiThere are two major types of diabetes mellitus, Type 1 Diabetes (T1D) and Type 2 Diabetes (T2D), however a number of subtypes have been defined and classified. Maternally Inherited Diabetes and Deafness (MIDD) and Maturity Onset Diabetes of the Young (MODY) are monogenic forms, whereas Latent Autoimmune Diabetes in Adults (LADA) is thought to be a polygenic subtype similar to T1D. Mutations in the
Low-impact exercise during pregnancy - a study of safety.
Background. Exercise is an important part of many women's lives. Women are often advised to refrain from physical exercise during pregnancy. The reason given is mainly safety, i.e. fear of maternal hyperthermia, which is known to be related to neural tube defects. However, exercise during pregnancy has not been shown to be related to hyperthermia. Objective. To study temperature and oxygen satura
Regulation of Insulin Secretion in Relation to Nitric Oxide, Carbon Monoxide and Acid alpha-Glucoside Hydrolase Activities
The main stimulus for insulin secretion is elevated blood glucose levels. In this thesis the aim was to study less well-known systems involved in the complex regulation of glucose-stimulated insulin release, emphasizing the role of the lysosomal/vacuolar system and the associated glycogenolytic acid alpha-glucoside hydrolases, but also the HO-CO and NOS-NO systems. We performed studies both in hea
Harmonic morphisms from complex projective spaces
In this paper we study harmonic morphisms emptyv :U sub CopfP m rarrN 2 from open subsets of complex projective spaces to Riemann surfaces. We construct many new examples of such maps which are not holomorphic with respect to the standard Kähler structure on CopfP m.
Essays on Exchange Rates, Exports and Growth in Developing Countries
This dissertation is a collection of four essays, where the unifying theme is how different exchange rate regimes have affected developing countries’ economic performance in different respects. In particular, we analyse the consequences on developing countries’ exports, but also, to some extent, the effects on their economic growth. Chapter 1 serves as an introductory chapter and provides a backgr
Childhood idiopathic thrombocytopenic purpura in the Nordic countries: Epidemiology and predictors of chronic disease
Aim: To describe the epidemiology of idiopathic thrombocytopenic purpura (ITP) in the Nordic countries, to define clinical subgroups and to investigate factors predicting chronic disease. Methods: A prospective registration was done from 1998 to 2000, including all children with newly diagnosed ITP aged 0-14 y and at least one platelet count <30 x 10(9)/l. Results: 506 children were registered and
Vezdaea rheocarpa new to North America
Vezdaea rheocarpa is documented for North America for the first time.
Accuracy of distributed multipoles and polarizabilities: Comparison between the LoProp and MpProp models
Localized multipole moments up to the fifth moment as well as localized dipole polarizabilities are calculated with the MpProp and the newly developed LoProp methods for a total of 20 molecules, predominantly derived from amino acids. A comparison of electrostatic potentials calculated from the multipole expansion obtained by the two methods with ab initio results shows that both methods reproduce
