Sökresultat

Representing detailed atmospheric aerosol processes in global Earth system models (ESMs) has proven to be challenging from both a computational and a parameterization perspective. The representation of secondary organic aerosol (SOA) formation and new particle formation (NPF) in large ESMs is generally constructed with low detail to save computational costs. The simplification could result in losi

Cryogenic land surface processes (CLSPs), such as cryoturbation, are currently active in landscapes covering 25% of our planet where they dictate key functions, such as carbon (C) cycling, and maintain patterned landscape features. While CLSPs are expected to diminish in the near future due to milder winters especially in the southern parts of the Arctic, the shifts in C cycling in these landscape

Metaforen har genom historien fängslat filosofer, och redan på Aristoteles tid fördes en diskussion kring metaforens plats i språket och vad metaforer kan tänkas betyda. Innan man börjar undersöka detta bör man nog först och främst stanna till och fråga sig vad en metafor egentligen är. Det finns ett otal metaforer och variationerna är oändliga, men i regel består en metafor av ett eller flera obj

Syftet med denna uppsats är att undersöka vilken roll Facebook spelar för tonåringar i deras identitetsskapande. Syftet uppnås genom följande övergripande frågeställning: • Hur ser relationen mellan tonåringars användning av Facebook och deras identitetsskapande ut? Den i sin tur mynnar ut i två följdfrågor: • Vilken typ av behov fyller Facebook för tonåringar? • Hur yttrar sig ett sådant behov

Popular Abstract in Swedish Förmaksflimmer är den vanligaste rytmrubbningen i hjärtat. Man beräknar att 1-2% av befolkningen har förmaksflimmer. Förmaksflimmer blir vanligare med stigande ålder. Bland personer äldre än 75 år har 5-10% förmaksflimmer. Var fjärde person över 40 år riskerar att drabbas av förmaksflimmer någon gång i livet. Förmaksflimmer ger bl.a. en ökad risk för blodproppar och strAtrial fibrillation (AF) is the most common sustained cardiac arrhythmia in the general population, and a major cause of morbidity and mortality. Low-grade inflammation, erythrocyte volume variation, and subclinical atherosclerosis have repeatedly been associated with cardiovascular disease, but it remains unclear whether these risk factors are also associated with incident AF. This thesis is bas

Accumulated carbon uptake, apparent quantum yield (AQY) and light-saturated net CO2 assimilation (A(sat)) were used to assess the responses of photosynthesis to environmental conditions during spring for three consecutive years. Whole-tree chambers were used to expose 40-year-old field-grown Norway spruce trees in northern Sweden to an elevated atmospheric CO2 concentration, [CO2], of 700 mu mol C

Resolving challenges related to the sustainability of natural capital and ecosystem services is an urgent issue. No roadmap on reaching sustainability exists; and the kind of sustainable land use required in a world that acknowledges both multiple environmental boundaries and local human well-being presents a quandary. In this commentary, we argue that a new globally consistent and expandable syst

Surging outlet glaciers are important in draining large ice caps, but the mechanisms controlling surge periodicities are poorly known. We investigated a sediment sequence from the glacier-fed Lake Logurinn in eastern Iceland, and our unique annually resolved data, based on sedimentary varves, imply that Eyjabakkajokull, an outlet glacier of Vatnajokull, began surging about 2200 cal a BP (before 19

Arbetets syfte är att undersöka atleters framställning och könsroller inom sportens värld, närmre specifikt organisationen UFC och sporten MMA. Analysen utgår från medietexten ” UFC 185 Embedded” som totalt består av sex stycken uppdelade videoklipp. Medietextens syfte är att ge tittarna en inblick i atleternas liv inför kommande evenemang. Det teoretiska underlag som använts i denna undersökning

Galanin, a recently discovered neuropeptide, was studied in the rat male and female reproductive tracts by immunocytochemistry and in vitro pharmacology. Nerve fibers containing galanin immunoreactivity were most abundant in the female paracervical tissue, where they surrounded non-immunoreactive ganglion cells. Galanin nerves were also found in the uterus and Fallopian tubes, as well as in the va

Tree phenology has been recognized as an important indicator of climate change, and a wide range of budburst models have been developed. The models differ in temperature sensitivity, and the choice of model can therefore influence the result of climate impact assessments. In this study we compared the ability of 15 models to simulate budburst of the main forest tree species in Sweden. Records on t

Climate warming in the Swedish sub-Arctic since 2000 has reached a level at which statistical analysis shows for the first time that current warming has exceeded that in the late 1930' s and early 1940' s, and has significantly crossed the 0 degrees C mean annual temperature threshold which causes many cryospheric and ecological impacts. The accelerating temperature increase trend has driven simil

Background. In metastatic colorectal cancer, mutation testing for KRAS exon 2 is widely implemented to select patients with wild-type tumors for treatment with the monocloncal anti-EGFR antibodies cetuximab and panitumumab. The added predictive value of additional biomarkers in the RAS-RAF-MAPK and PI3K-AKT-mTOR pathways in colorectal cancer is uncertain, which led us to systematically review the

Popular Abstract in Swedish I Sverige betonas idag alltmer det hälsofrämjande arbetet riktat mot barn, ungdomar och deras föräldrar. Olika föräldrastödsaktiviteter erbjuds. Det behövs ökad kunskap om varför vissa aktiviteter fungerar bättre än andra. Det är även viktigt att känna till föräldrarnas motiv för att deltaga och upplevelser av stödaktiviteten. Syftet med denna avhandling var att belysa In today's Swedish society there is increasing emphasis on health-promotive work among children, adolescents, and their parents. Knowledge is needed about why certain activities work better than others. It is important to study the parents' motives and experiences of participating in parental supporting programmes. In child health care, mostly among the nurses, there is a contrast between what th

Coastal environments have experienced large ecological changes as a result of human activities over the last 100–200 years. To understand the severity and potential consequences of such changes, paleoenvironmental records provide important contextual information. The Baltic Sea coastal zone is naturally a vulnerable system and subject to significant human-induced impacts. To put the recent environ

Large grazers are known to affect ecosystem functioning even to the degree where ecosystems transition to another vegetation state. Alongside the vegetation change, several features of ecosystem functioning, such as ecosystem carbon sink capacity and soil carbon mineralisation rates, may be altered. It has remained largely uninvestigated how the grazing effects on carbon cycling processes depend o

During the second week of August, 1,000 Swedes were asked via telephone about their opinions on the use of security cameras in public spaces. Ninety percent of the public were positive when asked the question “What do you think about surveillance cameras in public spaces?” – 49% stat- ing that they are “very positive” and 41% “quite positive”. Furthermore, 72% of the respondents stated that there

This mapping provides an overview of different types of arenas where the two concepts Ecosystem-based adaptation (EbA) and Blue Carbon (BC) are discussed. EbA has been defined by the Convention on Biological Diversity (CBD) as “The use of biodiversity and ecosystem services as part of an overall adaptation strategy to help people to adapt to the adverse effects of climate change.” (CBD, 2009). BC