Sökresultat

Leaching of dissolved organic carbon (DOC) from the forest floor and transport in soil solution into the mineral soil are important for carbon cycling in boreal forest ecosystems. We examined DOC concentrations in bulk deposition, throughfall and in soil solutions collected under the O and B horizons in three Norway spruce stands along a climatic gradient in Sweden. Mean annual temperature for the

Popular Abstract in Swedish I Sverige har andelen förtidspensionärer ökat under lång tid och uppgick år 1998 till 7.6% av befolkningen i arbetsför ålder (16-64 år). Den vanligaste orsaken till att en individ förtidspensioneras är reducerad arbetsförmåga till följd av problem i rörelseorganen. Kunskaperna om förtidspensionärers livskvalitet är bristfälliga. Syftet med denna studie var att studera lThe starting-point of this thesis was the high rate of disability pensioners in Sweden and the lack of knowledge about what a disability pension entails for quality of life (QL). The aim of the study was to gain knowledge about QL among disability retirees with musculoskeletal disorders (ERPs). A questionnaire was sent in 1992 to 450 ERPs in Kristianstad Municipality, Sweden, granted their disabil

We have investigated the regulation of hormone secretion from rat pancreatic islets by the GABAB receptors (GABABRs). Inclusion of the specific GABABR antagonist CGP 55845 in the extracellular medium increased glucose-stimulated insulin secretion 1.6-fold but did not affect the release of glucagon and somatostatin. Conversely, addition of the GABABR agonist baclofen inhibited glucose-stimulated in

By the use of wavelength-modulation diode laser spectroscopy, water vapor and oxygen are detected in scattering media nonintrusively, at 980 nm and 760 nm, respectively. The technique demonstrated is based on the fact that free gases have extremely sharp absorption structures in comparison with the broad features of bulk material. Water vapor and oxygen measurements have been performed during the

Background: In obese patients, jejunoileal bypass (JIB) has been used to induce weight reduction. Changes in the neuroendocrine system may be affected by the JIB-operation, because the proximal small intestinal mucosa has a rich supply of endocrine cells and peptidergic nerves. Materials and Methods: In 37 obese patients operated with JIB 1-30 years ago, small intestinal biopsies were taken at the

Popular Abstract in English Practices of scaling are an everyday part of governance. To ignore the way scaling is used as an intended or unintended means of securing power is a depoliticizing act. In this thesis, I consider processes of scaling and how they shape water governance in South Africa. Investigating three cases, namely, the De Hoop Dam development, water service delivery in JohannesburgThis thesis offers a critical analysis of the scaling of water governance in South Africa and its implications for water access and allocation. As the complexity and severity of environmental problems increases, there is a growing tendency to look to environmental governance to offer solutions. I contend that water governance, as with all forms of environmental governance, is never an apolitical e

The papers in this volume explore the cognitive neuroscience of second language acquisition from the perspectives of critical/sensitive periods, maturational effects, individual differences, neural regions involved, and processing characteristics. The research methodologies used include functional magnetic resonance imaging (fMRI), positron emission tomography (PET), and event related potentials (

Popular Abstract in Swedish Under senare år har företag inom byggbranschen utvecklat sitt kvalitetstänkande genom att införa kvalitetssystem för att styra byggprocessen. Många olika aktörer med olika intressen är involverade vilket gör att det är en komplex process sammansatt av en rad olika mindre processer. Kraven på kvalitetssäkring kommer ursprungligen från myndigheterna via lagstiftningen menDuring the past few years, extensive effort has been devoted to developing quality systems as an integral part of the process in the construction sector. The construction process is complex, involving many different actors with different interests. The demand for quality assurance comes primarily from central authorities via the client, but quality systems should be applied throughout the whole ch

This thesis highlights the research and development of a new plastic-scintillator detector for time-of-flight measurements in relativistic heavy-ion beam experiments. The detector makes possible the identification of different ion species on flight distances as short as a few meters. The novelty lies in the design approach of using many moderately fast, independent measurements of every physical e

Popular Abstract in Swedish Polymermembranbränsleceller (PEM) anses vara en mycket lovande teknik inom fordonsindustrin på grund av dess kompakthet i storlek, höga verkningsgrader samt låga arbetstryck och temperaturer. De senaste åren har tekniken varit fokus för en anseenlig mängd forskning. PEM-bränsleceller har den stora fördelen att energiomvandlingseffektiviteten har potential för att vara bThis thesis presents numerical simulations of reacting transport phenomena in polymer electrolyte membrane (PEM) fuel cells. Broadly, the presented work is subdivided into macro and microscale simulations. In macroscale simulations, a unit PEM fuel cell with interdigitated flow field configurations is simulated keeping in mind all the essential transport mechanisms, i.e., transport of species, ion

The endoplasmic reticulum (ER) structure is of central importance for the regulation of cellular anabolism, stress response, and signal transduction. Generally continuous, the ER can temporarily undergo dramatic structural rearrangements resulting in a fragmented appearance. In this study we assess the dynamic nature of ER fission in pyramidal neurons in organotypic hippocampal slice cultures stim

One of the obstacles that seem to impede a more frequent application of the modelling and simulation approach system dynamics (SD) in the software engineering community is the lack of well-defined and repeatable procedures for generating or using information that (a) stems from real industrial software development practice and (b) is suitable for SD model building. This problem can be resolved, at

Many consider United Nations Security Council Resolution 1325 a ground-breaking document, and as a resolution which attest to the new ambition of gender equality in the international community. However, questions remains of the actual effects of UNSCR 1325. This thesis analyses and compares the peace processes in Liberia and Rwanda in order to understand how UNSCR 1325 have affected them. The anal

Disposable hygiene products, such as gloves and aprons, are commonly and frequently used in healthcare environments and are essential to maintain the hygiene standard. They are placed in different types of carriers, primarily in examination rooms and are mounted on the walls. This creates some difficulties for product development and fast access because not all hygiene products fit all carriers an

The purpose of this study was to investigate how child and family social workers on the basis of a specific mentor model express their discretion in their professional role. The data was collected by using qualitative interviews with five social workers from the same workplace.The benchmark of the municipality was determinative for the social embeddedness, the social climate and the social network

In collaboration with IKEA of Sweden, the objective and purpose of this thesis is to create a better understanding of how can IKEA establish a more sustainable supply chain by calculating the climate footprint for Raw Materials in use today across category area (CA) of Comfort, and aid in directing future material development to achieve its future sustainability goals of becoming climate positive

Katalysatorer är viktiga komponenter i den kemiska industrin. Deras användning tillåter kemiska processer att ske på ett ekonomiskt och miljövänligt sätt, förutsatt att de är stabila och har bra aktivitet i den kemiska miljön där de tillämpas. Ett viktigt steg vid implementeringen av nya kemiska processer är alltså att utveckla lämpliga katalysatorer. Processen att utveckla sådana kan vara väldigtEstablishing a technically practical method to generate representative model catalysts for the use in characterizations and testing prior to catalyst implementation in chemical process units would allow for a more sophisticated understanding of the underlying catalytic mechanisms. As a step towards establishing such a method, generating non-agglomerated, spherical NiMo nanoparticles, with diameter

What does Candida have in common with vaginal microbiota? We share our body with millions of microbes, which share a common space and interact tightly. All the interactions between them are important for keeping a good microenvironment. However, there is always a disruption of what should be otherwise a comfortable place to live. Such changes can be subtle or can affect entire communities of micr

Oleaginous microorganisms provide an opportunity to produce oils without the use of arable land for cultivation of oil-containing plants. Oleaginous microorganisms are also capable of storing products of pharmaceutical interest alongside storing polymers, which could open new opportunities in the bioplastic industry. Oily yeasts have several advantages in comparison to alternatives; their doubling

Background and objectives Baonaise is a novel plant-based savoury sauce. Baonaise sauce base (BSB) is produced from baobab fruit pulp. Creaming and phase separation were observed in Baonasie from previous studies at the company. In this study, concentration, temperature and type of oil, speed and time of mixing were studied to investigate the factors influencing the physical stability of baobab p