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Due to a warming climate, tundra ecosystems are subject to shrub and treeline expansions which could lead to increased above- but decreased belowground carbon (C) stocks. An observed low soil C stock in some subarctic forests and tall shrublands has been suggested to be induced by priming of organic matter decomposition, possibly mediated by ectomycorrhizal fungi. On the other hand, the higher bel

It is impossible to conceive our modern world without plastics. Since the mass production of plastics began, humanity has produced around 8 billion tons of plastic waste, and only 9% has been recycled. Terephthalic acid polymers such as poly(ethylene terephthalate) (PET) have been massively produced over the last years thanks to their characteristics and applications. Due to their limited biodegra

Malaria är en av vår nutids största globala hälsoproblem och skördar hundratusentals människoliv årligen. Malaria är en parasitisk sjukdom, där Plasmodium falciparum är den gängse malariaparasiten. Denna parasit infekterar vanligen den afrikanska malariamyggan, Anopheles gambiae, som i sin tur har en hög preferens för just oss människor. Således sker spridningen av malaria till människor primärt gMalaria is a global health issue affecting hundreds of millions of people worldwide and accounts for as much as 405 000 deaths annually. Preventative actions are taken but are seemingly not enough to eradicate the spread. Targeting underlying molecular mechanisms behind the host-seeking behavior of the principal malaria vector Anopheles gambiae, would offer a new approach in the development of an

Att jag intresserar mig för stranden som plats för mitt examensarbete är kanske inte så konstigt. Som vågsurfare har jag tillbringat mycket tid på stranden och ute bland vågorna. Genom surfingen har jag upplevt många olika kuststräckor och vågor på jorden, men just stranden och surfingen i Sverige har fångat mitt intresse. Här är årstidernas förändringar och havets stormar de största utmaningarna,It is not that surprising that I chose the beach as the subject of my thesis. As a surfer, I have spent a lot of time on the beach and among the waves. Through surfing I have experienced a wide variety of coastlines around the world, but the beaches of Sweden have peaked my interest. The changing of the seasons and the ocean´s storms are the biggest challenges here for a surfer, not the size of th

The major histocompatibility complex (MHC) is a membrane protein group of central importance in the immune system. It is divided into two main classes, class I and class II. The MHCs are highly polymorphic which is believed to be indication of trans-species polymorphism (TSP). There is TSP when an allele is maintained in two species through a speciation event. The songbirds that I study here belon

Detta är en artikel om kalkmodifiering av lermorän och är baserad på examensarbetet ”Lime modification of clay till – a case study” (Westesson, 2015). Med kalkmodifiering menas att jordens packningsbarhet förbättras genom inblandning av kalk. Metoden att använda sig av kalk för att förbättra de geotekniska egenskaperna av leror och lermoräner är en nygammal metod och har främst använts till vägproThis report deals with lime modification of clay till. Lime modification means that the compaction properties of the soil are improved by the addition of lime. The report consists of three main parts: 1) Description of the geotechnical properties of clay till and how lime modification affects the properties; 2) Description of the implementation of lime modification and the tests conducted at a con

In our everyday life we live distant from the origin of life itself - nature. Dramatic landscape and fascinating views touch us in a way that few other things manage to do. It is something that make us recognize our powerlessness and the feeling of awe towards the nature. Experiencing striking nature is a way to create a deeper understanding of our own world and at the same time enrich our lives w

A part of the project of transforming the worn down medieval fortress Glimmingehus into a tourist attraction for the people of the 20th century, was to dig out the once filled in moat surrounding it. This very labour intensive project did not only result in a nostalgic atmosphere but also a large amount of fairly well preserved finds, since the moat had once been used as a rubbish dump. A part of

Effekterna av mikroplaster är ännu inte helt utredda och därför kan de vara mycket farligare än vad vi vet idag. Plastpartiklarna kan finnas överallt i miljön och en hittills outforskad spridningskälla är deponier och dess lakvatten. Det har inte undgått allmänheten att större plastskräp, det vill säga makroplaster, både förfular samt förstör natur och miljö. Mindre plastskräp, så kallade mikropAlthough most microplastics (<5 mm in length or diameter, depending on shape) are not visible they can be found everywhere in the environment. The effects can be devastating and much greater than what has been proven so far, as there is a lack of knowledge about the impact, spread and extent of microplastics. The Swedish EPA published a report in June 2017 which reveals a number of major microplas

Lakvatten läcker ut mikroplast Effekterna av mikroplaster är ännu inte helt utredda och därför kan de vara mycket farligare än vad vi vet idag. Plastpartiklarna kan finnas överallt i miljön och en hittills outforskad spridningskälla är deponier och dess lakvatten. Det har inte undgått allmänheten att större plastskräp, det vill säga makroplaster, både förfular samt förstör natur och miljö. MindrAlthough most microplastics (<5 mm in length or diameter, depending on shape) are not visible they can be found everywhere in the environment. The effects can be devastating and much greater than what has been proven so far, as there is a lack of knowledge about the impact, spread and extent of microplastics. The Swedish EPA published a report in June 2017 which reveals a number of major microplas

A 30-m-thick sedimentary succession at Leinstranda on the southwestern coast of Br circle divide ggerhalv circle divide ya, northwestern Svalbard, spans the two last glacial-interglacial cycles and reveals information on glacial dynamics, sea-level changes and the timing of these events. We investigated the deposits using standard stratigraphical and sedimentological techniques, together with grou

A first research development progress report of the Chromosome 19 Consortium with members from Sweden, Norway, Spain, USA, China and India, a part of the Chromosome-Centric Human Proteome Project (C-HPP) global initiative is presented (http://www.c-hpp.org). From the chromosome 19 peptide-targeted library constituting 6159 peptides, a pilot study was conducted using a sub-set with 125 isotope-labe

Life-threatening intracardiac and great vessels thrombi are rare in neonates. Recombinant tissue plasminogen activator (rTPA) is used in adults to stimulate fibrinolysis and facilitate thrombus resolution. Its use in neonates, along with heparin, remains controversial because of potential risk of serious bleeding. We aim to present our experience with the use of thrombolytic agents in seven neonat

OBJECTIVES: To investigate the mechanisms of platelet kinetics in the SMART study that demonstrated excess mortality with CD4 guided episodic antiretroviral therapy (ART) (drug conservation [DC]) compared to continuous treatment (viral suppression [VS]). Follow up analyses of stored plasma samples demonstrated increased activation of both inflammatory and coagulation pathways after stopping ART.

Colonies of N-2-fixing cyanobacteria are key players in supplying new nitrogen to the ocean, but the biological fate of this fixed nitrogen remains poorly constrained. Here, we report on aerobic and anaerobic microbial nitrogen transformation processes that co-occur within millimetre-sized cyanobacterial aggregates (Nodularia spumigena) collected in aerated surface waters in the Baltic Sea. Microe

Aim of the study: The primary purpose of this study is to investigate if pretreatment plasma levels of vascular endothelial growth factor (VEGF) are predictive of the effect of celecoxib on survival in advanced non-small cell lung cancer (NSCLC) treated with palliative chemotherapy. A secondary objective is to describe the course of plasma VEGF levels during and after treatment with cytotoxic chem

BackgroundPost-relapse survival (PRS) was evaluated in patients with Ewing sarcoma (EWS) enrolled in chemotherapy protocols based on the use of high-dose chemotherapy with busulfan and melfalan (HDT) as a first-line consolidation treatment in high-risk patients. ProcedureEWS patients enrolled in ISG/SSG III and IV trials who relapsed after complete remission were included in the analysis. At recur

Loop migration among birds is characterized by the spring route lying consistently west or east of the autumn route. The existence of loops has been explained by general wind conditions or seasonal differences in habitat distribution. Loop migration has predominantly been studied at the population level, for example by analysing ring recoveries. Here we study loop migration of individual marsh har

In aqueous systems with immobilized macromolecules, including biological tissue, the longitudinal spin relaxation of water protons is primarily induced by exchange-mediated orientational randomization (EMOR) of intra- and intermolecular magnetic dipole-dipole couplings. We have embarked on a systematic program to develop, from the stochastic Liouville equation, a general and rigorous theory that c