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Performance and scalability of isolated DC-DC converter topologies in low voltage, high current applications
(Lappeenranta University of Technology, 2012-12-18)
Fuel cells are a promising alternative for clean and efficient energy production. A fuel cell is
probably the most demanding of all distributed generation power sources. It resembles a solar
cell in many ways, but sets ...
Simulation and optimization tools in paper machine concept design
(Lappeenranta University of Technology, 2012-11-16)
The last decade has shown that the global paper industry needs new processes
and products in order to reassert its position in the industry. As the paper
markets in Western Europe and North America have stabilized, the ...
Application of capillary electrophoretic methods for determining carbohydrates and aliphatic carboxylic acids formed during wood processing
(VTT Technical Research Centre of Finland, 2012-11-14)
Knowledge of the behaviour of cellulose, hemicelluloses, and lignin during wood
and pulp processing is essential for understanding and controlling the processes.
Determination of monosaccharide composition gives information ...
The demand for global student talent: Capitalizing on the value of university-industry collaboration
(Lappeenranta University of Technology, 2012-12-20)
The university sector in Europe has invested money and effort into the
internationalization of higher education. The benefits of internationalizing higher
education are fuelled by changing global values, choices and ...
Active inverter output filtering methods
(Lappeenranta University of Technology, 2012-10-12)
Frequency converters are widely used in the industry to enable better controllability and efficiency
of variable speed AC motor drives. Despite these advantages, certain challenges
concerning the inverter and motor ...
Creating possibilities for collective creativity : Brokerage Functions in Practice-Based Innovation
(Lappeenranta University of Technology, 2012-05-18)
In the network era, creative achievements like innovations are more and more often created in
interaction among different actors. The complexity of today‘s problems transcends the individual
human mind, requiring not ...
Software for design of experiments and response modelling of cake ltration applications
(Lappeenranta University of Technology, 2012-04-28)
Filtration is a widely used unit operation in chemical engineering. The huge
variation in the properties of materials to be ltered makes the study of
ltration a challenging task. One of the objectives of this thesis ...
Quasiclassical Approach to the Vortex State in Iron-based Superconductors
(Lappeenranta University of Technology, 2012-11-21)
The quasiclassical approach was applied to the investigation of the vortex properties in the ironbased superconductors. The special attention was paid to manifestation of the nonlocal effects of the vortex core structure. ...
Theoretical Analysis and Numerical Simulation of Spectral Radiative Properties of Combustion Gases in Oxy/Air-Fired Combustion Systems
(Lappeenranta University of Technology, 2012-12-11)
Energy efficiency is one of the major objectives which should be achieved in order to
implement the limited energy resources of the world in a sustainable way. Since radiative
heat transfer is the dominant heat transfer ...
Simulation of structural stress history based on dynamic analysis
(Lappeenranta University of Technology, 2012-11-23)
Modern machine structures are often fabricated by welding. From a fatigue point
of view, the structural details and especially, the welded details are the most prone
to fatigue damage and failure. Design against fatigue ...