Sökning: "ion outflow"

Visar resultat 6 - 10 av 11 avhandlingar innehållade orden ion outflow.

1. 6. Mars : plasma environment and surface hydrology

   Författare :Ella Carlsson; Luleå tekniska universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Fysik; Physics;

   Sammanfattning : This doctoral thesis treats parts of the solar wind interaction with the Martian atmosphere and the water-related features known as gullies. The composition of the escaping plasma at Mars has been investigated in an analysis of data from the IMA sensor, which is a part of the ASPERA-3 instrument suit onboard the European satellite Mars Express. LÄS MER

3. 7. Precipitation and fixation of uranium in reduced environment : simulation in a continuous culture of sulfate-reducing bacteria

   Författare :Ulf G. Edvardsson; Stockholms universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

   Sammanfattning : The precipitation and fixation of the uranyl ion (U022+), in a reduced environment, has been investigated by means of continuous cultivation of sulphate-reducing bacteria. The continuous culture sustem made it possible to study the chemical reactions under physico-chemical conditions (e.g. LÄS MER

4. 8. Electron energization in near-Earth space : Studies of kinetic scales using multi-spacecraft data

   Författare :Elin Eriksson; Andris Vaivads; Masahiro Hoshino; Uppsala universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; magnetic reconnection; electron acceleration; electron heating; magnetosheath; magnetotail; magnetic nulls; Cluster; Magnetospheric MultiScale; Fysik med inriktning mot rymd- och plasmafysik; Physics with specialization in Space and Plasma Physics;

   Sammanfattning : Plasma, a gas of charged particles exhibiting collective behavior, is everywhere in the Universe. The heating of plasma to millions of degrees and acceleration of charged particles to very high energies has been observed in many astrophysical environments. How and where the heating and acceleration occur is in many cases unclear. LÄS MER

5. 9. O⁺ heating in the high altitude cusp and mantle due to wave-particle interaction

   Författare :Rikard Slapak; Stephan Buchert; Luleå tekniska universitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Rymdteknik; Space Technology;

   Sammanfattning : This thesis is composed of three articles, which have the common denominator that they are studies of heating of oxygen ions in the high altitude cusp and mantle in the terrestrial magnetosphere. All data analysis are based on observational data from the Cluster satellites. LÄS MER

7. 10. Release and effects of calcitonin gene-related peptide in myocardial ischaemia

   Författare :Göran Källner; Karolinska Institutet; Karolinska Institutet; []
   Nyckelord :;

   Sammanfattning : A proportion of sensory C-fibres is characterized by sensitivity to the pungent agent in hot peppers, capsaicin. Upon stimulation by capsaicin, co-stored peptides including calcitonin gene-related peptide (CGRP), are released from the peripheral terminals of these fibres. LÄS MER