Search for dissertations about: "Low-flow"

Showing result 1 - 5 of 41 swedish dissertations containing the word Low-flow.

2. 1. Modern inhalation agents and effects of anaesthesia equipment during low-flow anaesthesia

   Author : Anders Johansson; Anestesiologi och intensivvård; []
   Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Anestesiologi; intensive care; intensivvård; Anaesthesiology; humidity and temperature; heat and moisture exchanger; isoflurane; desflurane; sevoflurane; anaesthetics volatile; carbon dioxide absorber; Low-flow; re-breathing circle circuit;

   Abstract : Volatile agents are economically and ecologically acceptable only when administered via low-flow systems. However, sevoflurane degrades during low-flow anaesthesia to compound A, and a high carbon dioxide absorber temperature increases this degradation. READ MORE

4. 2. Hydronic Heating Systems The Effect of Design on System Sensitivity

   Author : Anders Trüschel; Chalmers tekniska högskola; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; shunt group; controllability; district heating; room temperature; air heater; heating coil; thermal power output; deviations; water return temperature; valve group; hydronic heating; radiator system; P-band;

   Abstract : This thesis starts from the recognition that a hydronic heating system can be optimised, but can never be totally perfect. Sooner or later, in practice, deviations - caused by one or more components having slightly different characteristics or settings than they are assumed or supposed to have - arise. READ MORE

5. 3. Micro-Flow Reactors for Kinetic Studies of Model Catalysts made by Electron-Beam Lithography

   Author : Stefan Johansson; Chalmers tekniska högskola; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; bistability; catalysis; nano-fabrication; supported model catalyst; CO oxidation; electron-beam lithography EBL ; micro-reactor;

   Abstract : The main objective of this work is to explore the potential of using electron beam lithography (EBL) to prepare well defined supported model catalysts, which can be used for catalytic research. The work has involved three major areas (i) EBL-fabrication of catalysts, (ii) design of a micro-flow reactor for catalytic evaluation, and (iii) problem oriented research using EBL-fabricated model catalysts. READ MORE

6. 4. Cerebral perfusion in cardiac surgery : with special reference to circulatory arrest during profound hypothermia

   Author : Rafael Astudillo Ley; Karolinska Institutet; Karolinska Institutet; []
   Keywords : Cardiac surgery; hypothermia; circulatory arrest; cardiopulmonary bypass; cerebral blood flow; cerebral metabolism; cerebral oxygen consuption; cerebral lactate; retograde crebral perfusion; transcranial Doppler; S-100B;

   Abstract : Thirty-nine pediatric and 82 adult patients were studied during cardiac surgery with cardio pulmonary bypass (CPB) performed with moderate hypothermia or with deep hypothermia and circulatory arrest (DHCA) with or-without retrograde cerebral perfusion (RCP). Cerebral blood flow (CBF) was estimated from Doppler measurements of the blood velocity in the middle cerebral artery (MCAv). READ MORE

7. 5. Computational modelling of blood flow in medical assist devices

   Author : Francesco Fiusco; Lisa Prahl Wittberg; Lars Mikael Broman; Anders Dahlkild; David Ku; KTH; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; computational fluid dynamics; haemodynamics; platelet activation; thrombogenicity; haemolysis; extracorporeal membrane oxygenation; sensitivity; Teknisk mekanik; Engineering Mechanics;

   Abstract : Extracorporeal membrane oxygenation (ECMO) is a life-saving support treat-ment in case of pulmonary and/or cardiac failure. An artificial extracorporealcircuit is used to offload the function of lungs and/or heart. READ MORE