Sökning: "Negative Element"
Visar resultat 1 - 5 av 154 avhandlingar innehållade orden Negative Element.
1. Precision measurements on negative ions
Sammanfattning : In this thesis, experiments with negative ions performed at the DESIREE facility are presented. DESIREE consists of two electrostatic storage rings operated at 13 K. The low temperature in combination with a low pressure allows for storage times of the negative ion beams to be up to several hours. LÄS MER
2. Posttranscriptional Regulation of Human Papillomavirus Type 16 Late mRNAs
Sammanfattning : The lifecycle of the human papillomavirus (HPV) is strictly linked to the programmed differentiation of the host cell it infects. Production of late proteins, which are used for the production of the major and minor capsid proteins, is only seen upon terminal differentiation of the epithelium. LÄS MER
3. The Role of Polyadenylation in Human Papillomavirus Type 16 Late Gene Expression
Sammanfattning : High-risk type human papillomaviruses (HPVs) are associated with cancer. HPVs are strictly epitheliotropic and infect basal cell layers, establishing a life cycle strongly linked to the differentiation stage of the infected cells. The viral capsid late genes, L2 and L1, are only expressed in terminally differentiated epithelium. LÄS MER
4. Finite element procedures for virtual tribology
Sammanfattning : The main purpose of this thesis is to use modern goal-oriented adap- tive finite element techniques in order to improve the numerical simulation of tribology. Two novel adaptive finite element methods for the Reynolds thin film model, and Stokes model including cavitation are presented and their different strategies are compared. LÄS MER
5. Computational Atomic Structures Toward Heavy Element Research
Sammanfattning : We are interested in complex electronic structures of various atomic and ionics systems. We use an ab initioapproach, the multiconfigurational Dirac-Hartree-Fock (MCDHF), to compute atomic structures and properties. LÄS MER