Sökning: "fragmentation mechanism"

Visar resultat 16 - 20 av 65 avhandlingar innehållade orden fragmentation mechanism.

1. 16. Developing the Angantyr model and extending colour reconnection for heavy-ion collisions in Pythia

   Författare :Harsh Shah; Partikel- och kärnfysik; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; heavy-ion collisions; hadronization; QCD Phenomenology; Colour Reconnection; Fysicumarkivet A:2023:Shah;

   Sammanfattning : This thesis is composed of four papers, the first two show the attempts made to extend the Pythia event generator to simulate heavy-ion collision events. The other two papers show methods to improve the hadronization mechanism in the Pythia model for a bettter agreement with the experimental data of pp and heavy-ion collisions. LÄS MER

3. 17. On the mechanisms and consequences of cell to cell DNA transfer

   Författare :Jacob Ehnfors; Karolinska Institutet; Karolinska Institutet; []
   Nyckelord :;

   Sammanfattning : Development of cancer is a multistep process where an accumulation of genetic alterations drives normal cells to malignancy. In most cancer cells genetic changes can be observed both at the level of point mutations and as gains and losses of chromosomes. LÄS MER

4. 18. Charge and proton dynamics in molecules and free clusters : from atomic to nanometer scale

   Författare :Bart Oostenrijk; Synkrotronljusfysik; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Charge transfer; Electron-Ion coincidence; proton hopping; Coulomb explosion; Cluster fission; site-selective dissociation; Molecular photodissociation; spectroscopy; Fysicumarkivet A:2018:Oostenrijk;

   Sammanfattning : The origin of properties in complex systems can often be traced to mechanisms involving charge and energy transfer in only a few embedded molecules. The detailed study of the time evolution of these mechanisms in their original environment is a challenging task. LÄS MER

5. 19. Regulation of apoptosis in the thyroid epithelium

   Författare :Abeba Demelash; Göteborgs universitet; []
   Nyckelord :Thyroid; Apoptosis; Caspase; Calpain; Hydrogen peroxide; TGF-beta; Staurosporine; Selenium; Cytochrome c;

   Sammanfattning : Apoptosis or programmed cell death allows the multicellular organism to remove cells that are in excess or potentially dangerous. Apoptosis has to be strictly controlled, yet inappropriately activated or suppressed apoptototic may contribute to a variety of diseases, including cancer, autoimmune disorders and neurodegenerative conditions. LÄS MER

7. 20. SOD1 Aggregation : Relevance of thermodynamic stability

   Författare :Lisa Lang; Mikael Oliveberg; Michele Vendruscolo; Stockholms universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Aggregation; misfolding; Superoxide dismutase SOD1 ; Amyotrophic lateral sclerosis ALS ; unfolding; thermodynamic stability; Biochemistry; biokemi;

   Sammanfattning : Amyotrophic lateral sclerosis (ALS) is a neurodegenerative disease affecting the upper and lower motor neurons causing muscle atrophy and paralysis followed by death. Aggregates containing superoxide dismutase (SOD1) are found as pathological hallmark in diseased ALS patients. LÄS MER