Search for dissertations about: "Johan Hultén"

Found 4 swedish dissertations containing the words Johan Hultén.

  2. 1. Some mechanisms generating drum brake squeal Johan Hultén

    Author : Johan Hultén; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; squeal; brake; vibration; drum; disc; noise; squeak;

    Abstract : .... READ MORE

  4. 2. Cyclic sulfamides as HIV-1 protease inhibitors : Synthesis, X-ray structure analysis and structure-activity relationship

    Author : Johan Hultén; Uppsala universitet; []
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Pharmaceutical chemistry; Farmaceutisk kemi; Pharmaceutical chemistry; Farmaceutisk kemi; Organic Pharmaceutical Chemistry; organisk farmaceutisk kemi;

    Abstract : Human Immunodeficiency Virus (HIV) is the causative agent of Acquired Immune Deficiency Syndrome (AIDS). Inhibition of HIV-1 protease leads to immature and non-infectious viral particles. The synthesis of a number of cyclic HIV-1 protease inhibitors and the subsequent evaluation in an enzyme assay is presented in this thesis. READ MORE

  5. 3. Drum Brake Squeal

    Author : Johan Hultén; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; friction induced; squeak; vibration; drum brake; squeal; instability; self-excited; noise;

    Abstract : Drum brake squeal is a common discomfort. The main goal of this thesis is to investigate the mechanisms that generate drum brake squeal and to create a base for the search for solutions. A series of steps towards the understanding of these mechanisms are taken. Firstly, a simple model for friction-induced vibration is presented. READ MORE

  6. 4. Having an attitude toward technology : Rethinking PATT studies from a theoretical perspective to study students’ attitudes toward technology

    Author : Johan Svenningsson; Magnus Hultén; Jonas Hallström; Berit Bungum; Linköpings universitet; []
    Keywords : SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Attitudes; Technology Education; PATT; Mitcham Score; Attityder; Teknikundervisning; PATT; Mitcham Score;

    Abstract : Attitudes are complex and consist of emotions, beliefs, and behavior. The overall aim of this thesis is to contribute to a theoretically anchored understanding of attitudes toward technology by exploring the three components of attitudes: affective, cognitive, and behavioral among 12-15-year-old students in Sweden. READ MORE