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Infrared (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
S. pneumoniae is a major cause of common diseases such as acute otitis media and pneumonia, as well as more serious illnesses like septicemia and meningitis. The increasing level of resistance in pneumococci threatens to change the tradition of treating common respiratory infections with narrow-spectrum penicillin. In the city of Malmö the proportion of penicillin nonsusceptible S. Pneumoniae (PNS
The aim of the current thesis was to investigate glial responses to electroconvulsive seizures (ECS), an animal model of the fast-acting antidepressant treatment electroconvulsive therapy (ECT). Depression, a common and devastating disorder, has in recent years been associated with volumetric changes in prefrontal cortex, hippocampus and amygdala, brain regions known to be implicated in emotional
Popular AbstractI avhandlingen undersöks den ekonomiska omvandlingsprocess som skett i Sverige sedan mitten av 1970-talet. Av speciellt intresse är hur och varför de fördelar som företag och branscher åtnjuter på grund av samlokalisering med andra ekonomiska aktörer (så kallade agglomerationsexternaliteter) varierar över olika faser av ekonomisk omvandling. Avhandlingen baserar sig på de framsteg
Plant water channels are members of the very old Major Intrinsic Protein (MIP) family, with representatives in bacteria, fungi, animals, and plants. The genome of the model plant Arabidopsis thaliana contains 35 MIP genes. Based on protein sequence comparisons, the MIP family has been divided in four subfamilies: the PIP (Plasma membrane Intrinsic Protein), the TIP (Tonoplast Intrinsic Protein), t
Predator released chemical cues provide a valuable source of information to prey organisms that can be used to alter their behaviour in order to reduce predation risk. In this thesis, I have examined under what circumstances chemical cues may be used by prey, and if prey discriminate between different cues. I have also investigated the role of predator experience in prey ability to detect and resp
The aim of this thesis was to study the endosonographic morphology of the anal sphincter in women, to establish an endosonographic sphincter defect score and to relate it to anal incontinence and anal sphincter pressure. A further aim was to determine intra-observer and inter-observer agreement in detection of endosonographic anal sphincter defects. An endosonographic anal sphincter defect classif
Birds on migration alternate between consuming fuel stores during flights and accumulating fuel stores during stopovers. This thesis highlights some of the ways in which migrating birds have adapted to the different demands of fuelling and flight. Most of the time on migration is spent at stopover sites accumulating fuel stores. To minimise the total time spent on migration, birds should fuel up a
A common feature in myeloid leukemia is suppression of normal hematopoiesis, leading to infections, bleeding and anemia. It has been suggested for a long time that leukemic cells possess a growth-advantage by overproducing an inhibitor - a leukamia associated inhibitor. Such an inhibitor has been characterized in leukemic cells as well as subpopulations of normal bone marrow and blood cells, sugge
Accelerator mass spectrometry (AMS) is a highly sensitive technique for counting atoms. Its main advantage in comparison with radiometric methods is the smaller amount of sample required (by a factor of a thousand). The method has a high efficiency and requires only some ten mg of sample material. The radioisotope 59Ni is of great importance in nuclear waste management in the nuclear industry. Thi
Predation imposes a potent evolutionary force on prey, moulding the evolution of traits and diversification of species, and can furthermore have powerful ecological consequences. We know that different species vary in how they cope with their natural enemies, and, consequently, a huge range of anti-predator defences are displayed in nature. Yet there is a growing recognition that, if we zoom into
Accelerator mass spectrometry (AMS) is a highly sensitive technique to count atoms. The method has a high efficiency, which makes it possible to measure small samples in a relatively short time, usually less than an hour. During the work for this thesis, methods have been developed to detect Al-26 at the Lund AMS facility. This includes the design, installation and testing of a new injector that i
This thesis concerns relatives of alcoholics. The aims were to investigate relatives’ situation concerning hardship, coping behaviour and psychiatric wellbeing. Two different information techniques (one standardized technique and one individually adjusted technique) were compared in order to reach relatives of alcoholics for information of available support. No significant differences were found i
Protein kinase C (PKC) is a family of serine/threonine kinases subgrouped into classical (α, βI, βII, γ), novel (δ, ε, η, θ) and atypical (ζ, ι/λ) isoforms. PKC can be activated by phorbol esters, and prolonged treatment of neuroblastoma cells has been shown to induce neuronal differentiation with neurite outgrowth and increased expression of neuronal genes. Here we show that a classical PKCβ isof
There is a lack of attention toward the diversity in experiences of architecture that are expressed through walking. Through the application of autoethnography and critical perspectives of queer and feminist theory, this dissertation develops a method for investigating experiences of architecture in regard to the activity of walking. In addition, this thesis addresses the influence of form, materi
The theology of Isaiah 40-55 has two seemingly contradictory aspects: the tension between the consolatory message of deliverance, and the harsh tone of accusation. In this part of the Book of Isaiah, YHWH's return to his people is demonstrated through the accumulation of declarations about YHWH's ability and his will to deliver the Israelites from the exile. At the same time, the Israelites are ex
Concentrations of persistent organic pollutants (POPs) in aquatic biota are dependent on several factors both on individual and on system level. Bioaccumulation of POPs in pelagic biota in lakes as well as fish in streams has been shown to be dependent on nutrient regime of the system. In lakes, POP concentrations in pelagic biota decrease with increasing lake trophy. In this thesis POP bioaccumul
Pyrimidines are important precursors for nucleic acids, and constantly synthesized and degraded in the cell to maintain a balanced supply. Many microoganisms can also extract the nitrogens from the pyrimidine ring, and use them as a nitrogen source when “preferred” sources are absent. Four different pathways, by which pyrimidines can be degraded, are known. I have studied the last discovered, but
Local treatment of a tumour is of interest from a number of perspectives. It is focused on reducing the tumour volume with minimal trauma, inducing tumour immunity and is a potential component of a combination therapy against tumours. Interstitial laser thermotherapy (ILT) has turned out to be a method well suited for selective local destruction of malignant tumours. This thesis is based on an exp
