Sökning: "annika björn"

Visar resultat 1 - 5 av 14 avhandlingar innehållade orden annika björn.

1. 1. Microbial Transformation of Organotin Compounds under Simulated Landfill Conditions

   Författare :Annika Björn; Bo Svensson; Jörgen Ejlertsson; Bo Mattiasson; Linköpings universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Organotin compounds; landfill simulation; PVC; Environmental chemistry; Miljökemi;

   Sammanfattning : Mono- and di-alkyltins are used extensively as heat stabilizers for processing of poly vinyl chloride (PVC). Tin mercaptide stabilizers are some of the most effective PVC stabilizers available. The main applications for tin stabilizers are building/construction products, such as pipes, fittings, siding and profiles (windows etc. LÄS MER

3. 2. Criticality of fast failures in the High Luminosity Large Hadron Collider

   Författare :Björn Lindström; Roger Ruber; Daniel Wollmann; Maja Olvegård; Annika Nordt; Uppsala universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; machine protection; failures; beam losses; accelerator physics;

   Sammanfattning : Each of the two Large Hadron Collider (LHC) beams contain 362 MJ of energy. This will be further increased to 678 MJ in the upcoming upgrade to the High Luminosity LHC (HL-LHC). In the event of an uncontrolled beam loss, a significant hazard occurs, that can damage the machine components. LÄS MER

4. 3. Modelling of Bingham Suspensional Flow : Influence of Viscosity and Particle Properties Applicable to Cementitious Materials

   Författare :Annika Gram; Björn Lagerblad; Ulrich Diederichs; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Self-Compacting Concrete; SCC; Fresh concrete flow; Numerical simulation; Viscosity; Open channel flow;

   Sammanfattning : Simulation of fresh concrete flow has spurged with the advent of Self-Compacting Concrete, SCC. The fresh concrete rheology must be compatible with the reinforced formwork geometry to ensure complete and reliable form filling with smooth concrete surfaces. LÄS MER

5. 4. Becoming an Adult : Living Conditions and Attitudes among Swedish Youth

   Författare :Annika Westberg; Björn Halleröd; Mattias Strandh; Tapio Salonen; Umeå universitet; []
   Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Sociology; youth; transitions; individualisation; life phase; life-course; welfare state; attitudes; social structuration; Sociologi; Sociology; Sociologi; Sociology; sociologi;

   Sammanfattning : This thesis studies youth from different perspectives. These are the life phaseand the generational perspectives, which have been studied via questions of establishment and individualisation. LÄS MER

7. 5. A Changing Arctic Climate : Science and Policy in the Arctic Climate Impact Assessment

   Författare :Annika E. Nilsson; Björn-Ola Linnér; Sofie Storbjörk; Oran R. Young; Linköpings universitet; []
   Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Arctic; climate; framing; knowledge production; regime; institution; actor network; co-production; indigenous knowledge; Arktis; klimat; kunskapsproduktion; regim; institution; aktörsnätverk; traditionell kunskap; INTERDISCIPLINARY RESEARCH AREAS; TVÄRVETENSKAPLIGA FORSKNINGSOMRÅDEN;

   Sammanfattning : Climate change has often been framed as a global issue but slow progress in the global climate negotiations and an increasing need to plan for local adaptation have made it increasingly salient to also discuss the potential of other arenas for climate policy and knowledge production. This dissertation analyzes the interplay between science and policy at the international regional level based on a study of an assessment of the impacts of climate change in the Arctic. LÄS MER