Search for dissertations about: "Per Hellström"

Showing result 1 - 5 of 41 swedish dissertations containing the words Per Hellström.

2. 1. Some aspects on the energy dissipation during canter chipping

   Author : Helen Lusth; Per Gradin; Lisbeth Hellström; Per Isaksson; Mittuniversitetet; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

   Abstract : .... READ MORE

4. 2. The neuropsychology of idiopathic normal pressure hydrocephalus

   Author : Per Hellström; Göteborgs universitet; []
   Keywords : Idiopathic normal pressure hydrocephalus; Neuropsychology; Prospective study; Shunt treatment; Treatment outcome; iNPH scale;

   Abstract : Idiopathic normal pressure hydrocephalus (iNPH) is characterised by an active distension of the cerebral ventricles due to inadequate absorption of cerebrospinal fluid (CSF) into the systemic circulation. The intracranial pressure is within normal limits, the passages between the ventricles and subarachnoid spaces are open, and there is an absence of identifiable antecedents known to reduce CSF absorption. READ MORE

5. 3. Fracture processes in wood chipping

   Author : Lisbeth Hellström; Per Gradin; Torbjörn Carlberg; Mittuniversitetet; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Wood chipping; chip formation; digital speckle photography; friction; fracture processes; analytical model; Engineering mechanics; Teknisk mekanik;

   Abstract : In both the chemical and mechanical pulping process, the logs are cut into wood chips by a disc chipper before fibre separation. To make the wood chipping process more efficient, one have to investigate in detail the coupling between theprocess parameters and the quality of the chips. READ MORE

6. 4. On the wood chipping process : a study on basic mechanisms in order to optimize chip properties for pulping

   Author : Lisbeth Hellström; Torbjörn Carlberg; Per Engstrand; Sören Östlund; Mittuniversitetet; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Wood chipping; Chip formation; Digital Speckle Photography; Friction; Fracture Processes; Analytical model; Laboratory Wood Chipper; Force Measurement; Vibration Synthesis; Energy Efficiency; Chip Damage; TMP; CTMP; Cellulose and paper engineering; Cellulosa- och pappersteknik;

   Abstract : In both the chemical and mechanical pulping process, the logs are cut into wood chips by a disc chipper before fibre separation. To make the wood chipping process more efficient, one have to investigate in detail the coupling between process parameters and the quality of the chips. READ MORE

7. 5. The clinical perspective on malignancies in renal transplanted patients

   Author : Vivan Hellström; Tomas Lorant; Gunnar Tufveson; Gunilla Enblad; Per Lindnér; Uppsala universitet; []
   Keywords : renal transplantation; malignant tumours;

   Abstract : Post-transplant malignancies cause significant morbidity and mortality. In this thesis we investigated malignancies in renal transplanted patients from a clinical viewpoint. The use of regional tumour registries considerably improved identification of pre- and post-transplant malignancies, which are generally underreported in transplant registries. READ MORE