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  • 1. Aldaeus, Fredrik
    et al.
    Johansson, Lars-Erik
    Jönsson, Mats
    Jonsson, Gunnar
    Karlstad University, Faculty of Technology and Science, Department of Physics and Electrical Engineering.
    Lindberg, Ulf
    Roeraade, Johan
    Hamp, Sven
    Escherichia Coli Behavior in an Open Dielectrophoretic Microsystem2004Conference paper (Other (popular science, discussion, etc.))
  • 2. Aldaeus, Fredrik
    et al.
    Yuan, Lin
    Jönsson, Mats
    Johansson, Lars-Erik
    Jonsson, Gunnar
    Karlstad University, Faculty of Technology and Science, Department of Physics and Electrical Engineering.
    Roeraade, Johan
    Amberg, Gustav
    Dielectrophoresis of Living Cells - New Concepts and Challenges2005Conference paper (Other (popular science, discussion, etc.))
  • 3. Benckert, Sylvia
    et al.
    Enghag, Margareta
    Gustafsson, Peter
    Johansson, Ove
    Jonsson, Gunnar
    Karlstad University, Faculty of Technology and Science, Department of Physics and Electrical Engineering.
    Norman, Robert
    Petersson, Sune
    Diskutera fysik i grupp! Utgå från kontextrika problem2007Book (Refereed)
  • 4. Brinkmalm, G.
    et al.
    Jonsson, Gunnar
    Karlstad University, Faculty of Technology and Science, Department of Physics and Electrical Engineering.
    Sundqvist, B.
    Hedin, A.
    Håkansson, P.
    Protein Adsorbed to Nitrocellulose Studied by Plasma Desorption Mass Spectrometry and Ellipsometry1990Conference paper (Refereed)
  • 5. Enghag, Margareta
    et al.
    Gustafsson, Peter
    Jonsson, Gunnar
    Karlstad University, Faculty of Technology and Science, Department of Physics and Electrical Engineering.
    Context Rich Problems and Miniprojects in Physics for Upper Secondary School2004Conference paper (Other (popular science, discussion, etc.))
  • 6.
    Enghag, Margareta
    et al.
    Mälardalen University.
    Gustafsson, Peter
    Mälardalen University.
    Jonsson, Gunnar
    Mälardalen University.
    Context Rich Problems and Miniprojects in Physics for Upper Secondary School2004In: Science Education International, ISSN 2077-2327, Vol. 15, no 4, p. 293-302Article in journal (Refereed)
  • 7. Enghag, Margareta
    et al.
    Gustafsson, Peter
    Jonsson, Gunnar
    Karlstad University, Faculty of Technology and Science, Department of Physics and Electrical Engineering.
    From Everyday Life Experiences to Physics Understanding Occurring in Small Group Work with Context Rich Problems During Introductory Physics Work at University2007Article in journal (Refereed)
  • 8.
    Enghag, Margareta
    et al.
    Karlstad University, Faculty of Technology and Science, Department of Physics and Electrical Engineering.
    Gustafsson, Peter
    Jonsson, Gunnar
    Karlstad University, Faculty of Technology and Science, Department of Physics and Electrical Engineering.
    From everyday life experiences to physics understanding occurring in small group work with context rich problems during introductory physics work at university2007In: Research in Science Education, 37:449-467Article in journal (Refereed)
  • 9. Enghag, Margareta
    et al.
    Niedderer, Hans
    Gustafsson, Peter
    Jonsson, Gunnar
    Karlstad University, Faculty of Technology and Science, Department of Physics and Electrical Engineering.
    Student Ownership of Learning: Context Rich Problems in Physics2007Conference paper (Other (popular science, discussion, etc.))
  • 10. Ens, W.
    et al.
    Sundqvist, B.
    Håkansson, P.
    Fenyö, D.
    Hedin, A.
    Jonsson, Gunnar
    Karlstad University, Faculty of Technology and Science, Department of Physics and Electrical Engineering.
    Radial Velocity Mesurements of Secondary Molecular Ions in keV and MeV Bombardment1989Article in journal (Refereed)
  • 11. Ens, W.
    et al.
    Sundqvist, B.
    Håkansson, P.
    Hedin, A.
    Jonsson, Gunnar
    Karlstad University, Faculty of Technology and Science, Department of Physics and Electrical Engineering.
    Directional Correlation between Primary Particle and Ejected Molecular Ions in Electronic Sputtering of Large Organic Molecules1989Article in journal (Refereed)
  • 12.
    Gustafsson, Peter
    et al.
    Malardalen Univ, Sch Educ Culture & Commun, Vasteras, Sweden..
    Jonsson, Gunnar
    Karlstad University, Faculty of Health, Science and Technology (starting 2013), Department of Engineering and Physics.
    Enghag, Margareta
    Stockholm Univ, Math & Sci Educ, S-10691 Stockholm, Sweden.
    The problem-solving process in physics as observed when engineering students at university level work in groups2015In: European Journal of Engineering Education, ISSN 0304-3797, E-ISSN 1469-5898, Vol. 40, no 4, p. 380-399Article in journal (Refereed)
    Abstract [en]

    The problem-solving process is investigated for five groups of students when solving context-rich problems in an introductory physics course included in an engineering programme. Through transcripts of their conversation, the paths in the problem-solving process have been traced and related to a general problem-solving model. All groups exhibit backward moves to earlier stages in the problem-solving process. These earlier stages are revisited by the groups for identifying sub-problems, setting parameter values or even restating the goal. We interpret this action as coming from the fact that the students have not yet developed a knowledge base and a problem-solving scheme. Connected to the backward moves in the process are opportunities for the group members to build such a knowledge base from contributions and experiences from all group members. Problem contents that induce such moves are identified and can thus be considered by science teachers when constructing problems for group work.

  • 13. Hedin, A.
    et al.
    Fenyö, D.
    Håkansson, P.
    Jonsson, Gunnar
    Karlstad University, Faculty of Technology and Science, Department of Physics and Electrical Engineering.
    Sundqvist, B.
    Electronic Sputtering of Biomolecules1989Article in journal (Refereed)
  • 14. Johansson, Lars Erik
    et al.
    Aldaeus, Fredrik
    Jonsson, Gunnar
    Karlstad University, Faculty of Technology and Science, Department of Physics and Electrical Engineering.
    Hamp, Sven
    Roeraade, Johan
    Determination of Conductivity of Bacteria by Using Cross-flow Filtration2006Article in journal (Refereed)
  • 15.
    Jonsson, Gunnar
    Karlstad University, Faculty of Technology and Science, Department of Physics and Electrical Engineering.
    Plasma Desorption Mass Spectrometry of Proteins Adsorbed to Nitrocellulose1989Doctoral thesis, monograph (Other academic)
  • 16.
    Jonsson, Gunnar
    et al.
    Karlstad University, Faculty of Technology and Science, Department of Physics and Electrical Engineering.
    Bjurulf, Veronica
    Karlstad University, Faculty of Technology and Science, Department of Physics and Electrical Engineering.
    Technology in pre-school and primary school analyzed in a degree project perspective2009In: Strengthening the Position of Technology Education in the Curriculum: Proceedings PATT-22 ConferenceDelft, the Netherlands, August 24-28, 2009 / [ed] Arien Bekker, Ilja Mottier & Marc J. de Vries, ITEEA , 2009, p. 262-269Conference paper (Refereed)
    Abstract [en]

    Today, technology is a very important part of our society, further more it has be-come apparent that an early start with this subject is important to arouse young peoples interest. Therefore, also preschool educators and teacher for the early years of primary school need knowledge in technology. In that sense it is worrying to read the report on the new syllabus for teacher education in Sweden (SOU 2008:109), since the subject syllabus for technology has been strongly reduced for these categories of teachers.

    Technology is a relatively young school subject in Sweden. It has been compulsory in the Swedish curriculum since 1980 (Skolöverstyrelsen, 1980), with its own syl-labus since 1994 (Utbildningsdepartementet, 1994). Therefore, some of the teach-ers teaching the subject today lack experience of being taught technology them-selves. In addition, many of them have only little or no background education in the subject at all (Bjurulf, 2005; Teknikföretagen, 2005). In the first Swedish cur-riculum for preschool, technology is mentioned only once: Develop their ability to build, create and design using different materials and techniques (Utbildningsde-partementet, 2006, p 9). This raises questions about how technology in preschool and school settings is presented to the children.

    The purpose of the study is to find out how technology in the Swedish preschools and primary schools, is construed in degree projects in the frame of the teacher training programme at Karlstad University (2007-2008).

    The results from this study indicate that there is a need of skills development by educators, both in pre- and primary school, concerning technology. This may be the reason why the trainee teachers themselves carry through exercises in technology, in the frame of their degree projects.

    The results also indicate differences between boys and girls, where the boys focus more on functional aspects during their construction work, while the girls focus more on the appearance of the artifacts. Preschools that are organized from a gen-der perspective encourage children to play in a more varying way. When the pre-schools are organized in a traditional way, with dolls rooms and building rooms, the girls often misses the chance to play with construction toys.

  • 17.
    Jonsson, Gunnar
    et al.
    Karlstad University, Faculty of Technology and Science, Department of Physics and Electrical Engineering.
    Enghag, Margareta
    Gustafsson, Peter
    Discussing Physics in Groups Using Quantitative and Qualitative Problems2011Conference paper (Refereed)
  • 18.
    Jonsson, Gunnar
    et al.
    Karlstad University, Faculty of Technology and Science, Department of Physics and Electrical Engineering.
    Gustafsson, Peter
    Enghag, Margareta
    Context Rich Problems - An Educational Tool in Physics Teaching2005Conference paper (Other (popular science, discussion, etc.))
  • 19.
    Jonsson, Gunnar
    et al.
    Karlstad University, Faculty of Technology and Science, Department of Physics and Electrical Engineering.
    Gustafsson, Peter
    Enghag, Margareta
    Context Rich Problems as an Educational Tool in Physics Teaching: a Case Study2007In: Journal of Baltic Science Education, ISSN 1648-3898, E-ISSN 2538-7138, Vol. 6, no 2, p. 26-34Article in journal (Refereed)
    Abstract [en]

    We present a case study, in which we used context rich problems as an educational tool in a university level physics course. The students worked in groups of three to four when solving these problems, which provided them with an opportunity to discuss physics together at their own level. Video recordings of groups working with the problems allowed us to study how different groups functioned and also to look for what is known as exploratory talks. This form of communication was interpreted as situational interest on the part of the students. A questionnaire at the end of the course, and interviews with a few of the students after the course, revealed that the students considered that context rich problems facilitated understanding of physical concepts and made physics more interesting.

  • 20.
    Jonsson, Gunnar
    et al.
    Karlstad University, Faculty of Technology and Science, Department of Physics and Electrical Engineering.
    Hedin, A.
    Håkansson, P.
    Sundqvist, B.
    Plasma Desorption Mass Spectrometry Studies of Small Proteins Adsorbed to Nitrocellulose1989Article in journal (Refereed)
  • 21.
    Jonsson, Gunnar
    et al.
    Karlstad University, Faculty of Technology and Science, Department of Physics and Electrical Engineering.
    Hedin, A.
    Håkansson, P.
    Sundqvist, B.
    Säve, G.
    Nielsen, P. F.
    Roepstorff, P.
    Johansson, K. E.
    Kamensky, I.
    Lindberg, M.
    Plasma Desorption Mass Spectrometry of Peptides and Proteins adsorbed on Nitrocellulose1986Article in journal (Refereed)
  • 22.
    Jonsson, Gunnar
    et al.
    Division of Ion Physics, Department of Radiation Sciences, Uppsala University.
    Hedin, A.
    Division of Ion Physics, Department of Radiation Sciences, Uppsala University.
    Håkansson, P.
    Division of Ion Physics, Department of Radiation Sciences, Uppsala University.
    Sundqvist, B.U.R.
    Division of Ion Physics, Department of Radiation Sciences, Uppsala University.
    Competition between Protein/Protein Interactions and Protein/Substrate Interactions Studied by Plasma Desorption Mass Spectrometry1988In: Rapid Communications in Mass Spectrometry, ISSN 0951-4198, E-ISSN 1097-0231, Vol. 2, no 8, p. 154-156Article in journal (Refereed)
  • 23.
    Jonsson, Gunnar
    et al.
    Division of Ion Physics, Department of Radiation Sciences, Uppsala University.
    Hedin, A.
    Division of Ion Physics, Department of Radiation Sciences, Uppsala University.
    Håkansson, Per
    Division of Ion Physics, Department of Radiation Sciences, Uppsala University.
    Sundqvist, B.U.R.
    Division of Ion Physics, Department of Radiation Sciences, Uppsala University.
    Bennich, H.
    Department of Immunology, Biomedical Center, Uppsala University.
    Roepstorff, P.
    Department of Molecular Biology, Odense University, Denmark.
    Compensation for Non-normal Ejection of Large Molecular Ions in Plasma Desorption Mass Spectrometry1989In: Rapid Communications in Mass Spectrometry, ISSN 0951-4198, E-ISSN 1097-0231, Vol. 3, no 6, p. 190-191Article in journal (Refereed)
    Abstract [en]

    By introducing an Einzel lens in the field-free region of a straight time-of-flight mass spectrometer, secondary ions of large mass can be detected more efficiently in plasma-desorption mass spectrometry. This procedure compensates for the large radial velocities of large molecular ions recently observed experimentally. It is shown that large molecular ions like those of lysozyme can now be detected more efficiently, and larger molecular ions than observed before in plasma-desorption mass spectrometry (like those of bovine ovalbumin, mol. wt 45 000) can now be studied.

  • 24. Jönsson, Mats
    et al.
    Aldaeus, Fredrik
    Johansson, Lars-Erik
    Lindberg, Ulf
    Roeraade, Johan
    Bäcklund, Ylva
    Hamp, Sven
    Jonsson, Gunnar
    Karlstad University, Faculty of Technology and Science, Department of Physics and Electrical Engineering.
    A Study of Biological Particles in a Bio-MEMS Device Using Dielectrophorersis2004Conference paper (Other (popular science, discussion, etc.))
  • 25.
    Roepstorff, P.
    et al.
    Department of Molecular Biology, Odense University, Denmark.
    Højrup, P.
    Department of Molecular Biology, Odense University, Denmark.
    Sundqvist, B.U.R.
    Tandem Accelerator Laboratory, Uppsala University.
    Jonsson, Gunnar
    Tandem Accelerator Laboratory, Uppsala University.
    Håkansson, P.
    Tandem Accelerator Laboratory, Uppsala University.
    Andersson, S. O.
    Institute for Biological Chemistry A, University of Copenhagen, Denmark.
    Johansson, K. E.
    Mycoplasma Laboratory, The National Veterinary Institute, Uppsala.
    Application of Plasma Desorption Mass Spectrometry to Molecular Weight Determination of Structural Protein from Insect Cuticle1986In: Journal of Mass Spectrometry, ISSN 1076-5174, E-ISSN 1096-9888, Vol. 13, no 12, p. 689-691Article in journal (Refereed)
    Abstract [en]

    During sequence determination of a structural protein from the cuticle of the migratory locust, Locusta migratoria, a discrepancy was found between the molecular weight calculated from the sequence data (15 323) and that estimated by SDS-gel electrophoresis (21 600). The protein contains several repeated sequences, and the discrepancy might indicate that part of the sequence was missing or that the protein contained a large prosthetic group. The molecular weight of the protein was determined by 127I-plasma desorption mass spectrometry to be 15 329±50 which confirms the sequence data and shows the molecular weight determination based on SDS-electrophoresis to be too high.

  • 26. Roepstorff, P.
    et al.
    Nielsen, P. E.
    Sundqvist, B.
    Håkansson, P.
    Jonsson, Gunnar
    Karlstad University, Faculty of Technology and Science, Department of Physics and Electrical Engineering.
    The Influence of Sample Preparation on Molecular Ion Formation in Plasma Desorption Mass Spectrometry of Peptides and Proteins1987Article in journal (Refereed)
  • 27. Sundqvist, B.
    et al.
    Ariyaratne, A.
    Ens, W.
    Fenyö, D.
    Hedin, A.
    Håkansson, P.
    Jonsson, Gunnar
    Karlstad University, Faculty of Technology and Science, Department of Physics and Electrical Engineering.
    Widdiyasekera, S.
    On the Upper Limit of Secondary Ions Ejected in Electronic Sputtering from Organic Solids1989Conference paper (Refereed)
  • 28. Sundqvist, B.
    et al.
    Fenyö, D.
    Hedin, A.
    Håkansson, P.
    Jonsson, Gunnar
    Karlstad University, Faculty of Technology and Science, Department of Physics and Electrical Engineering.
    Ens, W.
    Johnson, R. E.
    Directional Correlations between Incident Particle and Secondary Ions in Electronic Sputtering of Large Organic Molecules1989Article in journal (Refereed)
  • 29. Sundqvist, B.
    et al.
    Hedin, A.
    Håkansson, P.
    Jonsson, Gunnar
    Karlstad University, Faculty of Technology and Science, Department of Physics and Electrical Engineering.
    Salehpour, M.
    Säve, G.
    Widdiyasekera, S.
    Roepstorff, P.
    Electronic Suputtering of Biomolecules1986Conference paper (Refereed)
  • 30. Sundqvist, B.
    et al.
    Hedin, A.
    Håkansson, P.
    Jonsson, Gunnar
    Karlstad University, Faculty of Technology and Science, Department of Physics and Electrical Engineering.
    Säve, G.
    Electronic Sputtering and its Application to Sims Analysis of Biomolecular Monolayers1988Conference paper (Refereed)
  • 31. Sundqvist, B.
    et al.
    Jonsson, Gunnar
    Karlstad University, Faculty of Technology and Science, Department of Physics and Electrical Engineering.
    Hedin, A.
    Håkansson, P.
    Bennich, H.
    Plasma Desorption Mass Spectrometry and its Application to Studies of Protein-Stationary-Phase Interactions1989Conference paper (Refereed)
1 - 31 of 31
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