Search for dissertations about: "D. Das"

Showing result 1 - 5 of 9 swedish dissertations containing the words D. Das.

2. 1. Aspects of Crack Growth in Single-Crystal Nickel-Base Superalloys

   Author : Christian Busse; Daniel Leidermark; Kjell Simonsson; Johan Moverare; David Gustafsson; Björn Sjödin; Louis J. Ghosn; Linköpings universitet; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

   Abstract : This Licentiate of Engineering thesis is a product of the results generated in the research project KME-702, which comprises modelling, microstructure investigations and material testing of cast nickel-base superalloys.The main objective of this work is to model the fatigue crack propagation behaviour in single-crystal nickel-base superalloys. READ MORE

4. 2. Properties of multilayered and multicomponent nitride alloys from first principles

   Author : Fei Wang; Ferenc Tasnadi; Igor Abrikosov; Frank Mücklich; Claudia Draxl; Linköpings universitet; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

   Abstract : This thesis is a theoretical exploration of properties of multilayered and multicomponent nitride alloys, in particular their mixing thermodynamics and elastic behaviors. Systematic investigation of properties of a large class of materials, such as the multicomponent nitride solid solutions, is in line with the modern approach of high-throughput search of novel materials. READ MORE

5. 3. Environmental history in southern Mozambique : Reconstruction of flooding events, hydroclimate and sea-level dynamics since mid-Holocene

   Author : Sandra Raúl Sitoe; Jan Risberg; Elin Norström; Lars-Ove Westerberg; John Compton; Stockholms universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Southern Africa; Limpopo River floodplain; flooding event; sea-level change; climate change; diatoms; phytoliths; mineral magnetics; grain-size; radiocarbon dating; kvartärgeologi; Quaternary Geology;

   Abstract : The aim of this thesis has been to reconstruct paleoenvironment, paleohydrology and paleoclimate in coastal southern Mozambique, with emphasis on tracing past flooding events on the lower Limpopo River floodplain. In order to extend flood chronologies beyond periods covered by instrumental data, sediments from lakes on the floodplain were studied (Lake Lungué, Coassane Oxbow, Lake Magandane and Lake Soane). READ MORE

6. 4. Cognitive dysfunction : Assessed by Questionnaires in a Population Sample and in Patients with Affective or Anxiety Disorders Before, During and After Treatment

   Author : Torbjörn Ohrt; Carlo Perris; Linköpings universitet; []
   Keywords : MEDICINE; MEDICIN;

   Abstract : The aim of the present thesis was to study the Swedish versions of the Dysfunctional Attitude Scale (DAS) and the Automatic Thoughts Questionnaire (ATQ) regarding their psychometric properties and to investigate their place in the cognitive theory of psychopathology. For these purposes samples were collected of the general population and of different psychopathological groups in different stages of illness and the results were compared with clinical diagnoses according to the DSM-III-R and IV and selfand observer ratings of depression and anxiety. READ MORE

7. 5. Modelling of Crack Growth in Single-Crystal Nickel-Base Superalloys

   Author : Christian Busse; Daniel Leidermark; Kjell Simonsson; Richard Neu; Linköpings universitet; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

   Abstract : This dissertation was produced at the Division of Solid Mechanics at Linköping University and is part of a research project, which comprises modelling, microstructure investigations and material testing of cast nickel-base superalloys. The main objective of this work was to deepen the understanding of the fracture behaviour of single-crystal nickel-base superalloys and to develop a model to predict the fatigue crack growth behaviour. READ MORE