• 2020-06-29

    Per Hurtig new docent in computer science

    Per Hurtig is the most recent docent at the Department of Computer Science. His research is about making communication on the internet faster and more efficient.

    - The number of connected units has increased tremendously in recent years, which in turn has sharpened the quality requirements considerably”, says Per Hurtig. “Both applications and users now depend on higher quality in terms of faster connection and less delays. My research is very much about how users of connected devices, such as mobile phones, can have a better experience.

    Three focus areas
    Since his thesis defence in 2012, Per’s work has been focused on three areas that reflect mobile usage and its development in society.

  • 2020-06-01

    Faster and Greener Purification Process with Carbon Dioxide

    In order for pharmaceuticals to be safe, they must be clean of pollutants. Carbon dioxide can be used to make the purification process more environmentally friendly, which may seem paradoxical since carbon dioxide is usually associated with a negative climate impact. However, if carbon dioxide is recovered from other existing processes and if the use of environmentally hazardous organic solvents is reduced, large gains can be made both economically and environmentally.

    “More knowledge of how the separation system works makes it easier to predict how to design an optimal system,” says Emelie Glenne, who recently defended her doctoral thesis in chemistry.

    Chromatography is a separation technique used both to purify samples and to analyse which substances a sample contains. The method is based on the substances to be separated being distributed between a stationary and a mobile phase. In her thesis, Emelie Glenne has focused on so-called supercritical fluid chromatography, SFC.

  • 2020-04-29

    New Honorary Doctor wants to protect data privacy

    During her years as a researcher and data protection commissioner, the German computer scientist Marit Hansen has been a pioneer for the concept of privacy enhancing technologies (PET). Her contribution to education and research within the field at Karlstad University has awarded her an honorary doctorate at the Faculty of Health, Science and Technology.

    Marit Hansen is a pioneer who, for the past 25 years, has been working outside of academia within the fields of data protection, personal integrity and security, using both technology and legislation. She has been working as a data protection commissioner in the state of Schleswig-Holstein in Germany since 2015, and is also involved in several other projects within the field. In 2018, she was appointed member of the National Commission on Data Ethics in Germany. Marit Hansen has in public debates and in discussions with politicians fought for data privacy as a fundamental civil right.

  • 2020-03-03

    The virtual paper-making machine of the future is here

    A virtual paper-making machine makes it possible to test run and optimise operations without costly downtime in the industry. New research at Karlstad University saves money and spares the environment.

    ”It is now possible to run the paper-making process virtually, without expensive equipment, to identify the optimal settings for each machine,” says Björn Sjöstrand, who recently submitted his doctoral thesis in chemical engineering at Karlstad University. ”This virtual paper-making machine offers the chance to spare the environment, which also saves money for the companies. Optimisation involves using a computer to determine how to operate the paper machine.”

  • 2020-02-14

    Forest fertilisation with paper mill residues

    Research at Karlstad University shows that sludge and ashes as paper mill residues can be used as effective fertiliser. This involves biochar, that is, carbon from organic material returned to the forest and thus closing the cycle.

    "Biochar has many beneficial effects on the environment," says Maria Sandberg, senior lecturer in environment and energy systems and research leader for the project. "Our lab experiments show that by enriching biochar we can produce a very effective fertiliser for forest plants. If we bring biochar back to the forest, it will remain stable for a long time. In this way, carbon is bound up and there is less carbon dioxide in the atmosphere, which counteracts global warming."

  • 2020-01-31

    Continued research in weightless state

    Solar cell research at Karlstad University has been granted further funding from the Swedish National Space Agency. This means a new opportunity to carry out experiments in an aeroplane in which micro-gravitation is created for the purpose of better understanding how the structure of the active layer of the solar cell is formed.

    ”It’s extremely satisfying to get an extension of this high-risk project from the National Space Agency”, says Jan van Stam, professor of physical chemistry at Karlstad University. ”We have, moreover, once again successfully passed the vetting procedure and received permission from ESA, European Space Agency, to carry out our new experiments during parabolic flights in autumn 2020. This is tantamount to a confirmation that we are on the right track and have put Karlstad University on the map in regard to research with paramount importance internationally.”