Sökning: "CRYSTAL"

Visar resultat 1 - 5 av 1413 avhandlingar innehållade ordet CRYSTAL.

  1. 1. Chirality in Crystal Engineering

    Författare :Krister Larsson; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; networks; 2; coordination chemistry; crystal engineering; 10; 3-nets; hydrogen bonding; 2 -biimidazole; single crystal X-ray diffraction; bis-chelating ligands; chirality;

    Sammanfattning : Crystal engineering combines supramolecular chemistry with solid state chemistry. The goal is to make molecular entities assemble into predefined structures with specific properties. At the same time much research is focused on the understanding of the intermolecular interactions governing the crystallisation process. LÄS MER

  3. 2. Crystal plasticity and crack initiation in a single-crystal nickel-base superalloy : Modelling, evaluation and applications

    Författare :Daniel Leidermark; Kjell Simonsson; Johan Moverare; Sören Sjöström; Hannu Hänninen; Linköpings universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Single-crystal superalloy; Crystal plasticity; Fatigue crack initiation; Critical plane model; Theory of critical distance; Rafting; Tension compression asymmetry;

    Sammanfattning : In this dissertation the work done in the projects KME-410/502 will be presented.The overall objective in these projects is to evaluate and develop tools for designingagainst fatigue in single-crystal nickel-base superalloys in gas turbines. LÄS MER

  4. 3. Nickel-Based Single-Crystal Superalloys : the crystal orientation influence on high temperature properties

    Författare :Mikael Segersäll; Johan Moverare; Kjell Simonsson; Daniel Leidermark; Roger Reed; Linköpings universitet; []
    Nyckelord :;

    Sammanfattning : Superalloys are a group of materials that are used in high temperature applications, for example gas turbines and aero engines. Gas turbines are most commonly used for power generation, and it is only the very critical components which are exposed to the most severe conditions within the turbine, which are made from superalloy material. LÄS MER

  5. 4. Crystal structures of human deoxyribonucleotidases

    Författare :Agnes Rinaldo-Matthis; Pär Nordlund; David K Stammers; Stockholms universitet; []
    Nyckelord :crystal structure;

    Sammanfattning : Human 5’-deoxyribonucleotidases are ubiquitous enzymes that catalyze the dephosphorylation of deoxyribonucleoside monophosphates to their nucleoside form. They participate in the regulation of deoxyribonucleotide pools and protect DNA replication from inbalance of precursors. LÄS MER

  7. 5. Drowning-out crystallisation of benzoic acid : Influence of processing conditions and solvent composition on crystal size and shape

    Författare :Xiomara Holmbäck; KTH; []
    Nyckelord :solvent effect; drowning-out; crystallization; benzoic acid; solubility; crystal habit; crystal growth; interfacial energy; growth mechanism;

    Sammanfattning : The aim of the present investigation is to increase theunderstanding of the role played by the solvent in inhibitingor enhancing crystal growth. Drowning-out crystallizationexperiments has been performed by the controlled addition ofwater or ethanol water mixtures to a saturated solution ofbenzoic acid in ethanol-water mixtures. LÄS MER