Search for dissertations about: "trans effects."

Showing result 1 - 5 of 122 swedish dissertations containing the words trans effects..

  2. 1. Selection in sperm and its consequences : Exploring haploid selection, ageing and epigenetic effects in sperm

    Author : Cosima Hermans Née Hotzy; Simone Immler; Göran Arnqvist; Mariana Wolfner; Uppsala universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; sperm; evolution; selection; haploid selection; epigenetics; sperm-mediated effects; trans-generational effects; sperm ageing; sperm senescence;

    Abstract : Sexually reproducing eukaryotes are typically going through a biphasic life cycle with a diploid and a haploid phase. Unlike in plants where selection on haploid pollen genotypes is well established, the possibility of selection occurring in animal sperm is currently not known. READ MORE

  4. 2. Ligand Dependent Regioselectivity in Palladium Mediated Allylic Alkylation

    Author : Charlotte Johansson; Göteborgs universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Palladium; allylic alkylation; η3-allyl palladium complexes; regioselectivity; PN-ligand; memory effects; dynamics; ligand effect; trans effects.;

    Abstract : In this thesis, different aspects on ligand dependent regioselectivity in palladium mediated allylic alkylation have been studied. It is believed that the regioselectivity is a result of nucleophilic attack trans to phosphorous when applying ligands wih different donor atoms. READ MORE

  5. 3. Cellular Effects of Cystatins

    Author : Samar Hunaiti; Avdelningen för klinisk kemi och farmakologi; []
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Cystatin C; Cystatin D; Galectin-1; Puncta assay; HoloMonitor; Cancer cells; Apoptosis; Cathepsin C;

    Abstract : The exact cellular functions of cystatins are still unknown, and the molecular mechanism leading to their internalization into cells is not yet fully understood. Commonly the cystatins are known to inhibit human lysosomal cysteine proteases (cysteine cathepsins) and it is supposed that this is their primary physiological role. READ MORE

  6. 4. Mixture Effects of Environmental Contaminants

    Author : Erik Lampa; Monica Lind; Jonas Björk; Uppsala universitet; []
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Mixtures; Environmental Contaminants; Atherosclerosis; Metabolic Syndrome; Boosting; Epidemiology;

    Abstract : Chemical exposure in humans rarely consists of a single chemical. The everyday exposure is characterized by thousands of chemicals mainly present at low levels. Despite that fact, risk assessment of chemicals is carried out on a chemical-by-chemical basis although there is a consensus that this view is too simplistic. READ MORE

  7. 5. Packing effects in palladium(II) and platinum(II) compounds, X-ray crystallography

    Author : Maria Johansson; Kemiska institutionen; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Inorganic chemistry; Platinum II ; Palladium II ; Half-normal probability plots; X-ray crystallography; Packing effects; Oorganisk kemi;

    Abstract : This thesis focuses on i) the effect of packing on the molecular geometry ii) packing arrangements of neutral Pd(II) and Pt(II) complexes iii) the trans influence in Pt(II) complexes iv) the differences in bonding in corresponding Pd(II) and Pt(II) complexes and v) the geometry of Pd(II) complexes with potential catalytic properties. Detailed three-dimensional structural information at the atomic level can be obtained from X-ray crystallography. READ MORE