Sökresultat

Popular Abstract in Swedish I Sverige produceras en stor del av elektriciteten i kärnkraftverk och som restprodukt får man ett mycket farligt radioaktivt avfall som måste isoleras från människor i hundratusentals till miljoner år. Svensk Kärnbränslehantering AB (SKB) har i uppdrag att ta hand om detta avfall och har utvecklat metoden KBS-3. I denna placeras det använda kärnbränslet i en kopparkapsBentonite is planned for use as a buffer material in high-level radioactive waste repositories, where safety assessment is performed for very long periods (100-1000 ka). This thesis focuses on the swelling of smectites in liquid water, and analysis of bentonite from field experiments at Äspö Hard Rock Laboratory, Sweden. Four field experiments were analyzed (Alternative Buffer Material experiment,

In the debate on the core of Information System (IS), El Sawy identified three faces of IS views: connection, immersion, and fusion. However, no research has further elaborated these concepts. For this task, we adopted the characteristics of the old concept of “emergence” to better describe and explain the shifts in IS from connection to immersion and finally towards fusion. A police organization

Popular Abstract in Swedish För att lungorna ska utvecklas normalt hos ett däggdjursfoster, måste lungorna vara vätskefyllda. Det har länge varit kännt att denna vätska produceras av lungorna själva, genom s k klorid-sekretion. Vid födelsen måste det nyfödda fostret börja andas och därför är det ytterst viktigt att lungorna snabbt töms på vätskan som fanns där under fosterutvecklingen. Detta sker Alveolar fluid clearance is driven by active absorption of Na+ across the alveolar epithelium. Development and hormonal regulation of alveolar fluid clearance over 1 hour was studied by instillation of a protein-containing, isosmolar fluid into lungs of fetal, newborn, and adult guinea pigs. After 1 hour, a sample of remaining alveolar fluid was collected and the change in protein concentration wa

This thesis describes analysis of data from the DELPHI Very Small Angle Tagger (VSAT) calorimeter at LEP1. The VSAT consists of four Silicon-Tungsten calorimeter modules symmetrically positioned 7.7 meters away from the interaction point. It measures elastically scattered electrons and positrons, Bhabha events, within the polar angular region between 5-12 mrad. Trigger efficiency and reconstructio

Popular Abstract in Swedish Ämnet för denna avhandling är luftkvalitet i stadsmiljöer. Efter det att utsläppen till luft från industrier och produktion av värme och kraft har minskat betydligt över de senaste årtiondena framstår trafiken alltmer som en dominerande källa till luftföroreningar i städer, och utgör ett hot mot människors hälsa. De största hälsoeffekterna orsakade av trafikens utsläppUltrafine particles, their sources and fate in the atmosphere are currently key issues in atmospheric research owing to concern about their effects on human health and global climate. Traffic emissions are a dominating source of ultrafine particles, especially in urban areas. After release into the atmosphere, the particles are subjected to complex dilution and transformation processes that are of

During south Scandinavian Late Bronze Age, c. 900-500 BC, a new tool was invented. It consisted of a wooden shaft and a knife blade made out of flint. One singel of this tool still exists today. It was found in a Danish bog in late 19th century. But there are many of the knife blades of flint; in museum collections or in flint assemblages from archaeological excavations. Archaeologists call them l

Popular Abstract in Swedish Denna avhandling behandlar tre frågor med anknytning till Ads/CFT-korrespondensen. I papper I presenteras lösningar som beskriver geometrin hos fraktionella D1-bran från Typ IIB strängteori. Kopplingskonstantens energiberoende beräknas på gaugeteorisidan. I papper II används idén att den anomala dimesionen för en gaugeteorioperator kan tolkas som ett egenvärde till HThis thesis deals with three topics related to the Ads/CFT correspondence. In Paper I, solutions describing the geometry of fractional D1-branes of Type IIB string theory are presented. The running coupling constant is computed on the gauge theory side. Paper II uses the idea that the anomalous dimension of a gauge theory operator can be interpreted as an eigenvalue of a spin chain Hamiltonian.