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Search: WFRF:(Petersson S) > Stockholm University

  • Result 1-7 of 7
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1.
  • Ax, M., et al. (author)
  • Regional lung ventilation in humans during hypergravity studied with quantitative SPECT
  • 2013
  • In: Respiratory Physiology & Neurobiology. - : Elsevier BV. - 1569-9048 .- 1878-1519. ; 189:3, s. 558-564
  • Journal article (peer-reviewed)abstract
    • Recently we challenged the view that arterial desaturation during hypergravity is caused by redistribution of blood flow to dependent lung regions by demonstrating a paradoxical redistribution of blood flow towards non-dependent regions. We have now quantified regional ventilation in 10 healthy supine volunteers at normal and three times normal gravity (1G and 3G). Regional ventilation was measured with Technegas (Tc-99m) and quantitative single photon emission computed tomography (SPECT). Hypergravity caused arterial desaturation, mean decrease 8%, p<0.05 vs. 1G. The ratio for mean ventilation per voxel for non-dependent and dependent lung regions was 0.81+/-0.12 during 1G and 1.63+/-0.35 during 3G (mean+/-SD), p<0.0001. Thus, regional ventilation was shifted from dependent to non-dependent regions. We suggest that arterial desaturation during hypergravity is caused by quantitatively different redistributions of blood flow and ventilation. To our knowledge, this is the first study presenting high-resolution measurements of regional ventilation in humans breathing normally during hypergravity.
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  • Petersson, Kenneth, et al. (author)
  • Nostalgia, future and the past as pedagogical technologies.
  • 2007
  • In: Discourse.: Studies in the Cultural Politics of Education.. - 0159-6306. ; 28:1
  • Journal article (peer-reviewed)abstract
    • This article provides a genealogical perspective on narratives about the past and the future as governmental discourses in teacher education, public health, and criminal justice in Sweden. Contemporary governmental strategies bring nostalgic memories of the past and visions and fears about the future back to life in the present. The past (history) is a technology of the present to rememorialize who "we" are and have been. The future is a spatial concept, a technology to shape and nurture the "future oriented" subject bent on the pursuit of lifelong learning. The notions of history and future in the construction of the lifelong learner function to link and harmonize the interest of the individual with that of society. As technologies of government these are not new. similar technologies were operating in the discourses about the future, society, and the citizen in the first part of the 20th century. What is new is the particular capabilities and capacities of the individual as an agent of the future and the collective principles in which life is lived.
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  • The Future Is Not What It Appears To Be. : Pedagogy, Genealogy and Political Epistemology.
  • 2006
  • Editorial collection (other academic/artistic)abstract
    • This book examines changes in of knowledge in modern social life. The contributors provide important intinterventions in contemporary discussions about power, change, and the challenges that were raised in the Enlightenment about knowledge, reason, and the possibilities of humanity. The studies in the book examines programs and crucaial reforms to understand their implications, assumptions and concequences. Firstly the chapters contribute to an international discussion one the historical relationships between social change, political rationality and the technologies of the self in a range of social life that included pedagogy. Secondly, the book offers new ways of studying and understanding the relation of the welfare state, social and educational sciences, and todays configurations of liberal governing. Thirdly, the discussion brings into focus and critiques the distinctions of social and educational theories that differentiate "context" and programs, divides discourse from the ""real", separates the subjective and objecttive and the personal and the public, and disconnects civil society from the "reason" in modern government.
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  • Result 1-7 of 7

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