Background: The electrophysiological mechanisms underlying atrial fibrillation (AF) are incompletely understood. Experimental studies have shown that remodelling of the atrial myocardium is linked to the occurrence and perpetuation of AF. Interatrial conduction disturbances and also delayed conduction at the posteroparaseptal region have also been reported as potential arrhythmogenic substrates. H

The effects of planktivorous fish on lower trophic levels through predation on zooplankton and nutrient excretion were experimentally separated and their relative importance quantified in a eutrophic humic lake. The experiment was performed in 12 enclosures (3 mi), which initially were identical with respect to all components except fish. At the start of the experiment, caged fish not able to feed

A procedure was developed for the covalent coupling of anti-alpha-fetoprotein antibody (anti-AFP) to a gold surface modified with a self-assembled monolayer (SAM) of thiourea (TU). The performance of the SAM-antibody layer was compared to those of similar layers based on thioctic acid (TA) and 3-mercaptopropionic acid (MPA) by using flow injection capacitive immunosensor system. Covalent coupling

Popular Abstract in Swedish Empiriska studier som fokuserar på subjektivt upplevd hälsa hos patienter i psykiatrin är sällsynta och merparten av de frågeformulär som finns är baserade på en medicinsk grund där objektivt observerbara sjukdomsindikatorer betonas. I studie I och II analyseras och beskrivs uppfattningar av begreppet hälsa hos patienter och sjuksköterskor i psykiatrisk vård med hjälp aEmpirical studies focusing on the subjective experience of health among patients in contact with the mental health services are rare and most questionnaires are based on a medical model that emphasizes objectively observed disease-oriented health indicators. In studies I and II perceptions of the concept of health among patients and nurses in mental health services were explored and described usin

Glial cell line-derived neurotrophic factor (GDNF) exhibits potent effects on survival and function of midbrain dopaminergic (DA) neurons in a variety of models. Although other growth factors expressed in the vicinity of developing DA neurons have been reported to support survival of DA neurons in vitro, to date none of these factors duplicate the potent and selective actions of GDNF in vivo. We r

The steam pressure control loops in the drying section of a paper machine play an important role for the quality of the moisture content control. The steam pressure loops are essential for the effective use of advanced control schemes for the moisture control. From mathematical model building and experiments on industrial paper machines it is found that the dynamics from the steam valves to the st

AIM: To determine the involvement of extracellular signal-regulated kinase 1/2 (ERK1/2) pathway in the expression of endothelin receptor type B (ETB) during culture. METHODS: SB386023, a specific inhibitor for ERK1/2 pathway, was used to define the intracellular signaling pathway for the upregulation of ETB receptors and sarafotoxin 6c (S6c), a selective agonist for ETB receptors, induced contract

Essä om förnyelsen av James Bond-serien på 1990-talet

Tuberculosis of the pancreas is very rare and can present with many signs and symptoms, including obstructive jaundice, weight loss and a mass in the head of the pancreas. Hence the diagnosis of pancreatic tuberculosis remains a challenge and a high index of suspicion is required. If a turnout is suspected then an ultrasound- or CT-guided fine needle aspiration should be performed. Even if the ini

Formation of calcium oxalate incrusts, scaling, may cause severe problems in the pulp and paper industry. Enzymatic degradation of oxalic acid provides a novel approach to eliminate the problems with calcium oxalate precipitation. The performance of two oxalate-degrading enzymes, oxalate oxidase from barley and oxalate decarboxylase from Aspergillus, was tested in model experiments with respect to

This paper shows how culture is used and transformed as it becomes mobilized as a strategic resource in a regional development project within a neoliberal economic discourse. The focus is how four smaller municipalities in the transnational Swedish/Danish Öresund region initiate a process of cultural mappings in order to incorporate local culture and cultural heritage in the regional tourist econo

Om jazzinspelningar på Thomas Alva Edisons skivbolag under 1920-talet.

1. Mechanical transients in fibre bundles of skinned smooth muscle of guinea-pig taenia coli at 21-22 degrees C were investigated by recording tension responses to length changes of up to 9%, complete within 0.3 ms. 2. The length-force relationship, recorded continuously during rapid stretch of a Ca(2+)-activated contracted muscle, was linear up to at least 2.5 times the isometric force, correspon