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Lake Poopo, within the large Altiplano basin of Bolivia, is connected upstream to Lake Titicaca and downstream to the salares, the big salt fields. Small changes in precipitation and river inflows strongly affect the extent of the lake surface area. For times when there are no satellite images, it is difficult to determine the extent of the lake from observations. Water balance computations were p
Popular Abstract in Swedish Papperstillverkning inkluderar flera processteg såsom flisning av träråvaran, massakokning och avvattning med vakuumlådor, pressning och torkning. Flera modeller av de mest viktiga processerna i torkpartiet presenteras i denna avhandling. Modellerna beskriver både statiska och dynamiska förlopp. Nya reglerstrategier som kan användas för både reglering vid stationär drifThe paper making process involves chopping of wood, cooking and forming, followed by dewatering in a vacuum section, press section and drying section. Several models for the most important parts of the paper machine drying section are presented in this thesis to describe phenomena at steady state and during state transitions. New control strategies applicable/useful for both steady-state control a
New neurons are only generated in two places of the postnatal brain; the subventricular zone (SVZ) and hippocampus. The SVZ-derived cells specifically migrate to the olfactory bulb where they give rise to new interneurons. We have genetically manipulated the postnatal SVZ progenitor cells with the aim to direct them to a neuronal fate in the striatum. Our result showed that ectopic expression of t
Recent studies have indicated a decline in sperm number in the western world during the past 50 years, sperm concentration changing from 113 to 66 millions per mL. Furthermore, significant geographical differences in male reproductive function have been observed. In Finland, the sperm concentration was found to be substantially higher than in Denmark. In parallel, the incidence of testicular cance
Popular Abstract in Swedish Protein kinas C (PKC) är en familj serin/treonin kinaser som har en viktig roll i regleringen av olika funktioner i cellen. PKC kan delas in i klassiska (alpha, betaI, betaII and gamma), nya (delta, epsilon, eta and theta) och atypiska (zeta and iota/lambda) isoformer beroende på skillnader i hur de regleras. När PKCalpha är inaktivt bidrar intramolekylära bindningar tiMembers of the protein kinase C (PKC) family of serine/threonine kinases play critical roles in cellular regulation. Depending on differences in regulation, PKCs can be divided into classical (alpha, betaI, betaII and gamma), novel (delta, epsilon, eta and theta) and atypical (zeta and iota/lambda) isoforms. When PKCalpha is inactive it is maintained in a closed conformation by intramolecular inte
The paper examines how firms in three regional clusters in Norway dominated by shipbuilding, mechanical engineering and electronics industry, respectively exploit both place-specific local resources as well as external, world-class knowledge to strengthen their competitiveness. From these case-studies we make four points: (1) ideal-typical regional innovation systems, i.e., regional clusters "surr
Violaxanthin deepoxidase (VDE) has been purified from spinach (Spinacia oleracea) leaves. The purification included differential sonication of thylakoid membranes, differential (NH4)2SO4 fractionation, gel filtration chromatography and finally either hydrophobic interaction chromatography or anion exchange chromatography. A total purification of more than 5000-fold compared to the original thylako
New trilobite discoveries from eight localities in Vastergotland, south-central Sweden, demonstrate that the middle Cambrian Ptychagnostus punctuosus and Goniagnostus nathorsti zones are present in most Lower Palaeozoic outcrop areas of Vastergotland, though as a thin and impersistent conglomeratic limestone, up to approximately 15 cm thick. These zones have not previously been recognised in Vaste
The article aims at pointing out the limitations of those archaeological approaches in the field of medieval studies that strictly follow the medieval social theory of the three and later four orders/estates. As an example of the possibilities offered by the use of an contextual approach in attempting to transcend the borders of the four-estate model, an analysis and interpretation of the pottery
The Late Ordovician-Early Silurian succession in Jamtland includes the marine Kogsta Siltstone, which is unconformably overlain by the shallow-water Ede Quartzite that grades into the open-marine Berge Limestone. A Hirnantia shelly fauna dates the uppermost Kogsta Siltstone as Hirnantian, and shelly fossils indicate an Aeronian age for the Berge Limestone. Biostratigraphically highly diagnostic co
This article examines Pierre Bourdieu’s sociology of the economy and his most recent politically engaged interventions on ‘globalisation’. Many scholars regard these as not being in the same academic league as his classic studies on taste, academia, and state elites, etc., and, instead, dismiss them as a private matter or even, as the spleen of Pierre Bourdieu, the individual. The paper questions
The vertical absorption spectra of phenanthrene and its radical cation have been studied theoretically by means of a multiconfigurational second-order perturbation approach. Singlet-singlet transition energies and oscillator strengths, and singlet-triplet excitation energies have been studied in the absorption spectrum of phenanthrene up to 6 eV. The absorption spectrum of the phenanthrene radical
Atmospheric deposition of N and S appears to have caused nutrient imbalance in Norway spruce stands in southern Sweden. This calls for a change of forest management to procedures that promote nutrient balance. Studies have shown lower soil acidity in Norway spruce/deciduous mixed stands than in spruce monocultures, but the tree nutrient status in such mixtures has not been much investigated so far
Abstract is not available
Aims and objectives. The aim was to study the association between gender, extent and content of care, satisfaction, coping and difficulties in the caregiving situation among older (75+) caregivers and to identify clusters of caregivers. The aim was also to explore psychometrically two instruments assessing satisfaction and difficulties in family caregivers. Background. Caregiving is a complicated
This article contributes to discourse-oriented, information-seeking research by showing how discourses, from a neopragmatist perspective, can be explored as tools that people employ when they actively engage in information practices in varied social contexts. A study of nurses and the nursing profession in Sweden is used as an empirical example of such a context, which is in the article understood
The objective of this study was to increase the knowledge of local stakeholders' acceptance of model-generated data when used as a communication tool in water quality management. The Ronnea catchment in the southwest of Sweden was chosen as the study area. The results indicate the model-generated data served as a uniting factor. Simultaneously, the stakeholders were concerned with presented data,
Antisocial behavior is often persistent, and in addition to causing suffering to children and their families, it also poses considerable costs for society. Children who display externalizing behavior in their early years run a high risk of having severe problems later in life. There is a need for treatment methods that may be used in various settings because these children constitute a group that
