Sökresultat

The use of (U-Th)/He thermochronometry in old slowly cooled terranes has long been debated. Hence, studies of natural setting are needed to verify the expected diffusivity behaviour of helium. Our results demonstrate that the (U-Th)/He method can be applicable to samples older than 200 Ma, and that available helium diffusion models can reproduce the results obtained from the age-vs.-depth trends.

in an aqueous solution of a hydrophobically, end-modified poly(ethylene glycol) polymer, HM-PEG, the thickening effect is dependent on intermolecular hydrophobic associations and the formation of a network structure. In the present investigation cyclodextrin, CD, has been added to an aqueous HM-PEG solution and a decrease in Newtonian viscosity has been followed. The decreased viscosity refers to

The glycosaminoglycan dermatan sulfate (DS) is a well-known activator of heparin cofactor II-dependent inactivation of thrombin. In contrast to heparin, dermatan sulfate has never been prepared recombinantly from material of non-animal origin. Here we report on the enzymatic synthesis of structurally well-defined DS with high anticoagulant activity. Using a microbial K4 polysaccharide and the reco

Change in Japanese foreign and security policy has long been characterized as “incremental”. However, Japan’s response to Russia’s 2022 invasion of Ukraine provides an opportunity to reconsider this paradigm. In the aftermath of the 2014 annexation of Crimea, then-Prime Minister Abe Shinzō chose not to put Crimea on the agenda, prioritizing instead relations with Russia. However, Prime Minister Ki

Special Issue InformationIs Orthodox Christianity primarily a tool or resource used by political entities, or does it act as an independent social force with the power to drive political outcomes? How does this religion, as a transnational force, shape global politics? The special issue "Sacred Battlefields: The Role of Orthodox Christianity in Geopolitics" seeks to address these overarching quest

In Sweden, the national security objective to establish a total defence, which has been pending since the end of the Cold War, has been reintroduced. This has increasingly shifted the attention from civil crisis management to military defence, with subsequent increased resources for defence mobilization. A key threat representation in the current Swedish security narrative is the grey zone, which

In order to understand peripheral nerve dysfunction, and to follow neuronal regeneration, basic sciences of the peripheral nerve should be understood completely. A surgeon who operates on "nerves" uses this knowledge, especially the organization of the peripheral nerve, in nerve reconstructions. When a nerve has been injured, the goal of surgical repair is generally to reapproximate the ends of th

When Sweden adopted its carbon tax in 1990, it was as one of the first of its kind worldwide. While the adoption of the tax has been attributed to its inclusion in the Swedish tax reform, undoubtedly playing a crucial role, the reform does not in itself explain how the Swedish carbon tax came about or why it became part of the reform package in the first place. In this article, we present a case s

It is commonly assumed that the speech production process is started and guided by a clear conception of what to say, i.e. an intention or a pre-linguistic message. This intention can also function as a standard of accuracy against which actual performance can be measured. But critique against the idea of such a centrally governed process has been offered, and propositions for how a distributed mo

The thesis explores the meaning of the concept "children's best" in relation to the social Swedish parental insurance debate from a post-structuralist view. The main material has been taken from daily news papers and the methodological as well as theoretical basis is provided for by Laclau & Mouffes discourse theory. In particular has the concept "empty signifiers" been

The airline industry is undergoing hard time after the deregulation. Incumbents are facing increased competition from the new entrants- low cost airlines and try to keep their market share, which is mainly composed of business travelers to themselves. At the same time low cost airlines by providing low cost, point-to-point services try to compete with incumbents. Strategies of both incumbent and l

Populärvetenskaplig sammanfattning: Våtmarkers utvecklingshistoria kan rekonstrueras genom att deras lagerföljd undersöks. Genom att studera de sediment, växtdelar och pollen som en våtmark är uppbyggd av kan man dra slutsatser om hur den bildats och hur dess utbredning varierat på grund av klimatförändringar och/eller mänsklig påverkan. Rekonstruktioner av förändringar i våtmarkers utbredning bidWetlands are of uttermost biological importance as they function as natural purifiers, absorb nitrogen, and contribute to the landscape biodiversity. In a long term, the history and change, in area- and volume extent, of wetlands reflect climate trends through time. This master’s thesis is an attempt to develop a methodology that in a simple and robust way reconstructs wetland changes using sedime