Sökning: "XANES"

Visar resultat 11 - 15 av 41 avhandlingar innehållade ordet XANES.

  1. 11. Structure Modeling with X-ray Absorption and Reverse Monte Carlo: Applications to Water

    Författare :Mikael Leetmaa; Lars G M Pettersson; John Rehr; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; water structure; x-ray absorption; spectroscopy; diffraction; reverse monte carlo; XAS; EXAFS; XANES; RMC; TP-DFT spectrum calculations; Physics; Fysik; kemisk fysik; Chemical Physics;

    Sammanfattning : Water is an important substance. It is part of us, of our environment, and is a fundamental prerequisite for the existence of life as we know it. The structure of water is still, after over 100 years of research on the subject, however under debate. LÄS MER

  3. 12. Structural and Electrochemical Relations in Electrode Materials for Rechargeable Batteries

    Författare :Viktor Renman; Kristina Edström; Mario Valvo; Cesar Pay Gómez; Mats Johnsson; Helmer Fjellvåg; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; batteries; electrochemical energy storage; oxohalides; conversion; alloy; pyrosilicate; CuHCF; MnHCM; XRD; XANES; in operando; Chemistry with specialization in Inorganic Chemistry; Kemi med inriktning mot oorganisk kemi;

    Sammanfattning : Rechargeable batteries have already conquered the market of portable electronics (i.e., mobile phones and laptops) and are set to further enable the large-scale deployment of electric vehicles and hybrid electric vehicles in a not too distant future. LÄS MER

  4. 13. Enhanced phosphorus removal from wastewater using virgin and modified slags : performance, speciation and mechanisms

    Författare :Minyu Zuo; Gunno Renman; Jon Petter Gustafsson; Lars Lövgren; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; AOD; EAF; BFS; Calcium phosphate; XANES; slag mineralogy; Mark- och vattenteknik; Land and Water Resources Engineering;

    Sammanfattning : Argon oxygen decarburization slag (AOD) was tested in batch and column experiments to investigate its phosphorus (P) removal performance. The effects of factors such as AOD dose, initial P concentration of the feeding solution, and aging on the P removal ability of the slags were analyzed. LÄS MER

  5. 14. Cobalt and Nickel Bioavailability for Biogas Formation

    Författare :Jenny Gustavsson; Bo Svensson; Anna Karlsson; Piet N.L. Lens; Linköpings universitet; []
    Nyckelord :Biogas production; bioavailability; cobalt; nickel; sequential extraction; S XANES; 454-pyrosequencing.; Biogasproduktion; biotillgänglighet; kobolt; nickel; sekventiell extraktion; S XANES; 454-pyrosekvensering;

    Sammanfattning : Supplementation of trace metals such as Co and Ni may improve anaerobic digestion of organic material for biogas formation. Which trace metals that are needed and the quantity to apply are, at least partly, related to metal speciation and bioavailability. LÄS MER

  7. 15. Determination of mercury chemical speciation in the presence of low molecular mass thiols and its importance for mercury methylation

    Författare :Van Liem-Nguyen; Erik Björn; Ulf Skyllberg; Cynthia Gilmour; Umeå universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Mercury; methylmercury; LMM thiol; mass spectrometry; biogeochemistry; soil; sediment; ICP; WinSGW; modeling; S XANES; ligand exchange; stability constant; boreal wetlands; analytisk kemi; Analytical Chemistry; Environmental Science; miljövetenskap;

    Sammanfattning : Methylmercury (MeHg) is a neurotoxic compound that threatens the well-being of humans and wildlife. It is formed through the methylation of inorganic mercury (HgII) under suboxic/anoxic conditions in soils, sediment and waters. LÄS MER