Sökning: "Urban Engberg"

Hittade 4 avhandlingar innehållade orden Urban Engberg.

1. 1. Computer simulation of interstitial diffusion in fcc crystals

   Författare :Urban Engberg; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; transistion state theory; efficiency; molecular dynamics; dynamical corrections; Monte Carlo;

   Sammanfattning : .... LÄS MER

3. 2. Computer Simulations in Materials Physics: Time-scales and Accuracy

   Författare :Urban Engberg; Chalmers tekniska högskola; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; basis sets; computer simulations; pseudopotentials; materials physics; density functional theory; transition state theory; O N ; quantum Monte Carlo;

   Sammanfattning : Computer simulations are expected to play an increasingly important role within materials physics in the future. Owing to a combination of accurate physical approximations, improved implementations of these approximations, and the exponentially increasing power of computers, problems can now be solved on length and time-scales which were unimaginable only a decade ago. LÄS MER

4. 3. Designing grinding tools to control and understand fibre release in groundwood pulping

   Författare :Magnus Heldin; Urban Wiklund; Birgitta Engberg; Uppsala universitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Groundwood pulping; Grinding mechanisms; Diamond grinding tool; Energy efficiency; Teknisk fysik med inriktning mot tribomaterial; Engineering Science with specialization in Tribo Materials;

   Sammanfattning : Mechanical pulping is a very energy demanding process in which only a fraction of the energy is used for the actual separation of wood fibres. The rest of the energy is lost, partly in damaging already separated fibres and partly as heat during viscoelastic deformation of the wood. LÄS MER

5. 4. Making Metal Making : Circulation and Workshop Practices in the Swedish Metal Trades, 1730–1775

   Författare :Måns Jansson; Göran Rydén; Göran Ulväng; Karel Davids; Uppsala universitet; []
   Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; metal trades; eighteenth century; knowledge; skills; circulation; strategies; tactics; cutlery; manufacturing; division of labour; Ekonomisk historia; Economic History;

   Sammanfattning : This dissertation is concerned with the making of metal making. It explores how skills, knowledge, and artefacts were circulated and grounded within the Swedish metal trades during the period ca. 1730 to 1775. It also analyses how these processes were related to different ways of organising practices of work. LÄS MER