Sökning: "platinum"

Visar resultat 1 - 5 av 209 avhandlingar innehållade ordet platinum.

  1. 1. Adsorption and bonding on platinum influence of the surface structure and chemical composition

    Detta är en avhandling från Stockholm : Fysik

    Författare :Emmanuelle Janin; KTH.; [2000]
    Nyckelord :Platinum; tin; low index single crystal surfaces; adsorption;

    Sammanfattning : This thesis deals with the influence of the structure andchemical composition of platinum surfaces on the adsorption ofsome molecules. Three main lines can be distinguished : 1) thecharacterisation of clean/modified surfaces, 2) the adsorptionof some simple atoms and molecules on these surfaces andfinally 3) the adsorption of 2-butenal, a bi-functionalmolecule containing a C=C group conjugated with a C=O group. LÄS MER

  2. 2. Platinum Group Elements in Birds of Prey

    Detta är en avhandling från Stockholm : Fysik

    Författare :Kristine H. Ek; [2005]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; rhodium; bird of prey; platinum; laser ablation; palladium; ICP-MS; airborne particles;

    Sammanfattning : The environmental concentrations of Pd, Pt and Rh (three of the platinum group elements, PGE) have increased since the introduction of exhaust catalysts on automobiles. A limited understanding of the environmental distribution and effects of the platinum group elements has raised concern over their potential biological availability. LÄS MER

  3. 3. Copper-transporting proteins and their interactions with platinum-based anticancer substances

    Detta är en avhandling från Umeå : Umeå Universitet

    Författare :Maria Espling; Umeå universitet.; [2013]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Cisplatin; Atox1; copper transport; anticancer drug; resistance; platinum; spectroscopy.; biologisk kemi; biological chemistry;

    Sammanfattning :   Cisplatin (CisPt) is an important drug that is used against various cancers, including testicular, ovarian, lung, head, and neck cancer. However, its effects are limited by cellular resistance. LÄS MER

  4. 4. Low-Temperature Oxidation of CO and Volatile Organic Compounds over Supported Platinum Catalysts

    Detta är en avhandling från Umeå : Umeå Universitet

    Författare :Karl Arnby; [2004]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; hexamethyldisiloxane; alumina; catalytic deactivation; environmental catalysis; platinum; volatile organic compounds; carbon monoxide; low-temperature activity;

    Sammanfattning : The catalytic oxidation of carbon monoxide (CO) and volatile organic compounds (VOC) is important for the reduction of harmful emissions from both vehicles and from stationary sources. Both these applications suffer from poor catalytic efficiency at lower temperatures. LÄS MER

  5. 5. PEPPSI-type Complexes of Palladium and Platinum: : Investigation of Properties and Applications in Catalysis

    Detta är en avhandling från Lund University, Faculty of Science, Department of Chemistry, Centre for Analysis and Synthesis

    Författare :Ekaterina Bolbat; Lund University.; Lunds universitet.; [2016-08]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; PEPPSY-type complexes; palladium; platinum; C−H activation; supported homogeneous catalysts;

    Sammanfattning : Catalysis is a powerful tool to highly efficient production of desired newchemicals by acceleration of a chemical reaction rate. Special compounds used forthis purpose are called catalysts; they induce a change in the chemicalenvironment without being consumed during the process. LÄS MER