Search for dissertations about: "SPIS"

Showing result 1 - 5 of 6 swedish dissertations containing the word SPIS.

  2. 1. Low-energy ions around comet 67P/Churyumov-Gerasimenko

    Author : Sofia Bergman; Gabriella Stenberg Wieser; Martin Wieser; Gert Brodin; Stein Håland; Umeå universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Low-energy ions; spacecraft charging; comets; 67P Churyumov-Gerasimenko; Rosetta; RPC-ICA; SPIS; diamagnetic cavity; field of view; plasma; space plasma physics; rymd- och plasmafysik; Space and Plasma Physics;

    Abstract : Low-energy ions play important roles in the formation of the plasma environment around a comet. Reliable ways of measuring these ions are therefore of high importance to fully understand the processes and dynamics of this environment. Unfortunately, low-energy ions are infamously difficult to detect. READ MORE

  4. 2. The effect of spacecraft charging on low-energy ion measurements around comet 67P/Churyumov-Gerasimenko

    Author : Sofia Bergman; Gabriella Stenberg Wieser; Martin Wieser; Gert Brodin; Umeå universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Spacecraft charging; low-energy ions; space physics; plasma physics; comet; Rosetta; SPIS; rymd- och plasmafysik; Space and Plasma Physics;

    Abstract : A spacecraft in space interacts with the surrounding environment and aqcuires an electrostatic potential. Charged particles are constantly bombarding the surface of the spacecraft, and at the same time solar EUV radiation induces photoemission, causing electrons to be emitted from the surface. READ MORE

  5. 3. A safe road transport system : factors influencing injury outcome for car occupants

    Author : Helena Stigson; Karolinska Institutet; Karolinska Institutet; []
    Keywords : Crash pulse recorder; crash severity; injury prevention; real-life crashes; road safety; safety performance indicator; holistic;

    Abstract : Given that over a million people are fatally injured in road accidents each year, the need for a systematic proactive approach is undeniable. The Swedish Road Administration (SRA) has developed a model for a safe road transport system based on the Vision Zero philosophy, to identify and prevent deviations from a safe system approach with regard to crashes. READ MORE

  6. 4. Chemical genetics and immunomodulation in Salmonella enterica serovar typhimurium infection

    Author : Speranta Banesaru; Karolinska Institutet; Karolinska Institutet; []
    Keywords : ;

    Abstract : Salmonella sp. are versatile bacteria that survive and replicate in a plethora of environmental niches and hosts, including humans. The illnesses caused by various serovars in humans range from mild gastroenteritis to severe systemic disease such as typhoid fever that still cause an important number of casualties especially in developing countries. READ MORE

  7. 5. Governance and Development of the East African Community : The Ethical Sustainability Framework

    Author : Dickson Kanakulya; Göran Collste; Ronnie Hjorth; Edward Wamala; Ngabirano Maximiano; Linköpings universitet; []
    Keywords : HUMANIORA; HUMANITIES;

    Abstract : The pursuit of sustainability of governance and development has become a major challenge in contemporary times because of increasing realization that: various ecological and social systems are interconnected; and the complexity of our natural and constructed environs requires holistic approaches to avoid catastrophic fissures in the systems on which humans depend. As regional governments such as the East African Community (EAC) become important in Africa (and other regions), they present opportunities to generate cross-national approaches to achieving sustainability albeit success in that direction is limited and sporadic. READ MORE