Sökning: "Phase curve"

Visar resultat 31 - 35 av 105 avhandlingar innehållade orden Phase curve.

  1. 31. Study of microstructure development in hypoeutectic grey cast iron

    Författare :Ruben Lora; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Sammanfattning : The avoidance of shrinkage porosity and metal expansion penetration defects as well as the control of the size and number of eutectic colonies and the tensile properties of the casting are issues of major importance in the production of lamellar cast iron. These defects, characteristics and properties are related to the microstructure that develops during solidification. LÄS MER

  3. 32. Resistivity and the solid-to-liquid transition in high-temperature superconductors

    Författare :Beatriz Espinosa Arronte; Magnus Andersson; Charles Simon; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; high-temperature superconductors; vortex dynamics; vortex solid-to-liquid transition; critical scaling; glass transition; Bose glass; heavy-ion irradiation; YBCO; Tl2Ba2CaCu2O8 d; oxygen deficiency.; Condensed matter physics; Kondenserade materiens fysik;

    Sammanfattning : In high-temperature superconductors a large region of the magnetic phase diagram is occupied by a vortex phase that displays a number of exciting phenomena. At low temperatures, vortices form a truly superconducting solid phase which at high temperatures turns into a dissipative vortex liquid. LÄS MER

  4. 33. Probabilistic Models for Species Tree Inference and Orthology Analysis

    Författare :Ikram Ullah; Jens Lagergren; Arndt von Haeseler; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; phylogenetics; phylogenomics; gene tree; species tree; expectation maximization; mixture model; dynamic programming; markov chain monte carlo; PrIME; JPrIME; Datalogi; Computer Science;

    Sammanfattning : A phylogenetic tree is used to model gene evolution and species evolution using molecular sequence data. For artifactual and biological reasons, a gene tree may differ from a species tree, a phenomenon known as gene tree-species tree incongruence. Assuming the presence of one or more evolutionary events, e.g. LÄS MER

  5. 34. Chitosan and chitosan/wheat gluten blends : properties of extrudates, solid films and bio-foams

    Författare :Fei Chen; Mikael Hedenqvist; Eliane Espuche; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Sammanfattning : This thesis presents four different studis describing the characteristics and processing opportunities of two widely available biopolymers: chitosan and wheat gluten. The interest in these materials is mainly because they are bio-based and obtained as co- or by-products in the fuel and food sectorIn the first study, high solids content chitosan samples (60 wt. LÄS MER

  7. 35. Asymptotic methods in design and characterization ofdiffractive axicons

    Författare :Anna Thaning; KTH; []
    Nyckelord :axicons; diffractive optics; coherence; asyptotic methods;

    Sammanfattning : This thesis addresses the subject of diffractive axicons inpartially coherent or oblique illumination. Design andcharacterization of the axicons are performed using asymptoticwave optics, employing the stationary-phase method to obtainapproximations of the diffraction integrals. LÄS MER