Search for dissertations about: "thermal transitions"

Showing result 1 - 5 of 72 swedish dissertations containing the words thermal transitions.

2. 1. Thermal adaptation along a latitudinal gradient in damselflies

   Author : Viktor Nilsson-Örtman; Frank Johansson; Karl Gotthard; Umeå universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Growth rate; metabolic theory of ecology; universal temperature dependence; environmental gradients; thermal performance; thermal sensitivity; environmental variability; optimality theory; life history; acclimation; size structure; competition; cannibalism; intraguild predation;

   Abstract : Understanding how temperature affects biological systems is a central question in ecology and evolutionary biology. Anthropogenic climate change adds urgency to this topic, as the demise or success of species under climate change is expected to depend on how temperature affects important aspects of organismal performance, such as growth, development, survival and reproduction. READ MORE

4. 2. Phase transitions in high-temperature superconductors

   Author : Jack Lidmar; KTH; []
   Keywords : Superconductivity; Vortices; Phase transitions; Strongly correlated fermions; High-temperature superconductivity; Monte Carlo simulations.; TECHNOLOGY; TEKNIKVETENSKAP;

   Abstract : Thermal fluctuations and disorder strongly influence the behaviour of hightemperature superconductors. In particular the vortices play a key role in determining their properties. In this thesis the main focus lies on phase transitions, both in ultra-thin films and in three-dimensional systems, which are driven by vortex fluctuations. READ MORE

5. 3. Crystallinity and Morphology of Starch Polymers in Films

   Author : Åsa Rindlav Westling; Chalmers tekniska högskola; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; morphology; amylose; surface; thermal transitions; amylopectin; starch; crystallinity; film;

   Abstract : Starch is a renewable material that can be converted into biodegradable plastic products, or films with excellent oxygen barrier properties. Films of potato starch, amylose, amylopectin and blends thereof were made by solution casting. READ MORE

6. 4. Modelling the system Cr-Fe-Ni-Te via the CALPHAD method, DFT and experiments : for fast nuclear reactor applications

   Author : Carl-Magnus Arvhult; Malin Selleby; Jean-Marc Joubert; KTH; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Phase diagrams; Calphad; thermodynamics; microscopy; XRD; thermal analysis; phase transitions; nuclear materials; Teknisk materialvetenskap; Materials Science and Engineering;

   Abstract : In the pursuit of safer, more environmentally friendly and sustainable forms of energy production for our ever growing demands, a type of nuclear reactor cooled by liquid metal instead of water is under development. Specific to this type of reactor are special forms of corrosion of the material that encapsulates the fuel pins in the reactor core, called Fuel-Clad Chemical Interaction (FCCI) or Fission Product-induced Liquid Metal Embrittlement (FPLME). READ MORE

7. 5. Resourceful students : Engaging students in active and systematic investigations in laboratories involving thermal phenomena

   Author : Christopher Robin Samuelsson; Jesper Haglund; Maja Elmgren; Bor Gregorcic; Paula R. L. Heron; Uppsala universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Inquiry-based; inquiry; infrared cameras; laboratory education; active engagement; systematic engagement; thermodynamics; phase transitions; calorimetry; curiosity; conceptual change; resources framework; social semiotics; physics education research; metacognition; laboratory skills; exemplars; instant inquiry; Physics with specialization in Physics Education; Fysik med inriktning mot fysikens didaktik;

   Abstract : This thesis focuses on students’ engagement in inquiry-based laboratory learning environments. The aim of the research is to explore what it is that makes students active and systematic in these types of lab learning environments. READ MORE