Search results

Popular Abstract in Swedish De flesta svenskar har nog upplevt hur skönt det kan värma i solen en klar vinterdag, trots att termometern visar minusgrader. Eller hur kallt det känns på ryggen en sommarkväll fastän man så sitter så nära en eld att det nästan bränns. Båda erfarenheterna beror på värmestrålning som kan värma oss utan att luften omkring oss är varm. Värmestrålningen från brasan når barInfrared (IR) dryers are widely used in the paper industry, mainly in the production of coated paper grades. The thesis deals with various aspects of heat transfer and energy use in infrared heaters and dryers as employed in the paper industry. Both gas-fired and electric IR dryers are considered and compared. The thesis also provides an introduction to infrared heaters and infrared drying, includ

Popular Abstract in Swedish Döva barns begreppsbildning i matematik Denna studie tar utgångspunkt i frågan varför många döva barn har svårt att lära sig matematik. Studiens syfte är att belysa döva barns begreppsbildning i ämnet matematik genom att beskriva hur några döva barn uttrycker sig och agerar på väg mot förståelse av två centrala matematiska begrepp, nämligen multiplikation med heltal ochThe question why deaf children have difficulties in learning mathematics is the basis of this study. The aim of the study is to illuminate deaf children’s concept formation in mathematics by describing how some deaf children express themselves and act on their way towards understanding two basic concepts, the concept of multiplication with whole numbers and the concept of length. Theories develope

We study Hamming versions of two classical clustering problems. The Hamming radius p-clustering problem (HRC) for a set S of k binary strings, each of length n, is to find p binary strings of length n that minimize the maximum Hamming distance between a string in S and the closest of the p strings; this minimum value is termed the p-radius of S and is denoted by varrho. The related Hamming diamete

AIM: To study the interaction between the human cysteine proteinase inhibitor, cystatin C, and proteinases of periodontitis associated bacteria. METHODS: Gingival crevicular fluid samples were collected from discrete periodontitis sites and their cystatin C content was estimated by enzyme linked immunosorbent assay (ELISA). The interaction between cystatin C and proteolytic enzymes from cultured s

Objective To assess intraobserver and interobserver variability in ovarian volume and gray-scale and color flow index measurements using transvaginal, three-dimensional, power Doppler ultrasonography. Methods Eleven women (22 ovaries) were examined on day 8 of controlled ovarian hyperstimulation therapy, which was part of their in vitro fertilization treatment protocol. The patients were examined

Popular Abstract in Swedish I plan to add a summary in Swedish at the WWW-page www.biokem.lu.se/education/theses/johannordthesis.htmRecombinant dUTPase from the bacterium Escherichia coli, the retrovirus equine infectious anemia virus (EIAV) and Homo sapiens have been made available for physico-chemical characterisation. The protocols developed have also proven to be suitable for production of enzymes modified by isotope labelling or other methods. The improved accessibility of enzyme material has enabled the subsequent invest

Jobs and economic growth are created where businesses are located and investments made. A number of factors affect where firms choose to locate and where and how much that is invested. Many of these factors are hard to influence in the short run while others are governed by politicians and can be designed in order to stimulate desirable business and investment behaviour. One such factor is taxatio

Nematophagous fungi are parasites of nematodes, thus they have been considered and tested for biological control of parasitic nematodes, but so far with limited success. Due to the fact that the nematode cuticle is composed of proteins it is likely that fungal extracellular proteases are involved in the infection of nematodes. I have isolated a gene (designated PII) encoding an extracellular cutic

Popular Abstract in Swedish Grupp B streptokocker (GBS) är den vanligaste orsaken till blodförgiftning, lunginflammation och hjärnhinneinflammation i nyföddhetsperioden. Ungefär en fjärdedel av alla kvinnor är koloniserade (bärare) genitalt av GBS under graviditeten och förlossningen. Hälften av barnen till dessa kvinnor blir smittade av bakterien i samband med födseln, men bara en liten del av deInfection with group B streptococcus (GBS), an encapsulated bacterium, is an important cause of neonatal morbidity and mortality. Capsular polysaccharides and cell surface proteins of GBS are candidate antigens for development of a human GBS vaccine. Proteins have many advantages as vaccine antigens. The majority of the neonatal infections are caused by strains of capsular serotypes Ia, Ib, II, II

Recent advances in laser technology, with the development of extremely short-pulse, high-intensity lasers, have opened doors to new areas in atomic physics. By focusing light from an intense, short-pulse laser into a gas jet, the emission of high-order harmonics of the laser frequency has been studied. The aim of this work has been two-fold: to better understand the underlying physics of the harmo

Popular Abstract in Swedish Hjärt-kärlsjukdomar är en ledande orsak av sjuklighet och dödlighet. Med hjälp av dagens moderna ultraljudsteknik är det möjligt att påvisa även begynnande, mycket diskreta kärlförändringar. En tidig upptäckt av dessa kan bli av betydelse för individens framtida hälsa. I ett antal studier har vi med hjälp av ultraljud undersökt kärlens styvhet och förmåga att vidgas (enCardiovascular disease (CVD) is one of the leading causes of mortality and morbidity. Early recognition of vascular changes, both structural and functional, may help to identify individuals at risk for CVD. Using modern ultrasound techniques – the echo-tracking technique for assessment of stiffness in large arteries and flow-mediated dilatation of the brachial artery as an indicator of endothelial

Popular Abstract in Swedish Fysiologiska och biokemiska processer i den levande kroppen kan studeras mha spårämnestekniken positronemissions tomografi (PET). Den bildgivande tekniken PET kräver radionuklider som sönderfaller genom att sända ut en positron. Positronen är antimateria till elektronen. När positronen har en mycket låg rörelseenergi och träffar på en elektron, ombildas deras vilomassorPositron emission tomography (PET) is a tracer technique used for quantitative in vivo studies of physiological and biochemical processes. Because of the use of positron-emitting radionuclides such as 11-C, 13-N, 15-O and 18-F, which are isotopes of the biologically ubiquitous elements, it is possible to label radiopharmaceuticals which trace biochemical processes precisely. In order to be able to

Growth conditions on acid soils may be hampered by low nutrient availability and phytotoxic Al (aluminium) concentrations. In this thesis I present my studies on adaptation mechanisms of wild plants to acid soils in the close root environment, the rhizosphere. The studies showed that plants have developed several mechanisms that may work simultaneously to face the complex soil chemistry. A first g

There is increased evidence to support the hypothesis that humanity actively, albeit inadvertently, contributes to global environmental change on a scale and with an intensity unprecedented in human history. Climate change, and to some extent stratospheric ozone depletion, present the international structures and systems for naturalresources management research and politics with fundamentally new

This thesis is a summary of five papers concerning endocyclic cleavage of glycosides and related acetals. Simple lactol ethers undergo endocyclic cleavage to give acyclic chain extended products on treatment with organoaluminium and organotitanium reagents. The first examples where organotitanium reagents induced alkylative endocyclic cleavage of carbohydrates is presented. The best conditions for

From a nursing perspective it is important to have information about the type of care needed, the reasons care is needed and quality of life among the most elderly people living in their own homes, in order to support their independence and maximise their quality of life. Thus a study was performed to investigate people aged 75 years and older dependent on care from professionals and/or a next of

OBJECTIVE-Latent autoimmune diabetes in adults (LADA) is often considered a slowly progressing subtype of type 1 diabetes, although the clinical picture more resembles type 2 diabetes. One way to improve classification is to study whether LADA shares genetic features with type 1 and/or type 2 diabetes. RESEARCH DESIGN AND METHODS-To accomplish this we studied whether LADA shares variation in the H

To elucidate how diabetic patients with limb-threatening foot lesions perceive and evaluate content and organisation of treatment in a multi-place hyperbaric oxygen chamber. To our knowledge there are no patients' evaluations of diabetes care in a high-technology area like the hyperbaric oxygen chamber. The burden on persons with diabetic foot complications might be increased if adjuvant therapy w

The DNA ploidy level of 673 accessions belonging to 238 species of Hieracium have been analyzed by flow cytometry. 222 of the species were of Scandinavian origin as members of the exclusively apomictic H. sectt. Bifida, Hieracium, Oreadea, Tridentata and Vulgata. For the overwhelming majority of the species, the ploidy level (or chromosme number) has never been investigated before. Approximately 5

Objectives: During the last few years, clinical, epidemiological, and pathological evidence has suggested that inherited alpha-1 antitrypsin [AAT] deficiency might play a role in the development of the fibromyalgia syndrome [FMS], probably because of the loss of AAT anti-inflammatory efficacy. The objective of this study was to estimate the prevalence and number of FMS patients, and their AAT phen