Sökning: "Rosa Lopez"

Hittade 2 avhandlingar innehållade orden Rosa Lopez.

  1. 1. Cracking during Continuous Casting of Steels : Analysis tools and procedures to identify their causes on microalloyed steel slabs

    Författare :Rosa Maria Pineda Huitron; Esa Vuorinen; Pavel Ernesto Ramí­rez López; Maria Begoña Santillana; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Transverse corner cracks; Continuous Casting; Microalloyes steels; Secondary cooling; Cooling curves; Crack susceptibility; Materialteknik; Engineering Materials;

    Sammanfattning : Transverse corner cracks are one of the most common but complex defects formed in microalloyed steels during continuous casting (CC). Such cracks are detrimental because it leads to a loss in productivity with a great impact on environment, energy and economics for several steel making companies all over the world. LÄS MER

  3. 2. Probing Magnetism at the Atomic Scale:  Non-Equilibrium Statistical Mechanics Theoretical Treatise

    Författare :Juan David Vasquez Jaramillo; Jonas Fransson; Rosa Lopez; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Non-Equilibrium Statistical Mechanics; Magnetism; Quantum Optics; Quantum Coherence; RKKY; Colciencias; Equation of Motion; Jauho-Meir-Wingreen Formalism; Physics with spec. in Atomic; Molecular and Condensed Matter Physics; Fysik med inriktning mot atom- molekyl- och kondenserande materiens fysik; Physics with specialization in Quantum Chemistry; Fysik med inriktning mot kvantkemi; Physics and Astronomy specializing in Theoretical Physics; Fysik och astronomi med inriktning mot teoretisk fysik;

    Sammanfattning : Here, I present a theoretical study, based on non-equilibrium quantum statistical mechanics and on the non-equilibrium extension to the RKKY intveraction,where I investigate the emergence of magnetism at the atomic scale in adsorbed molecular complexes hosting localized spin moments, at the stake of being probed with scanning tunneling microscopy tip, and being driven by a temperature gradient and gated by an electric field. The scanning tunneling microscopy set up is modeled as a molecular junction with a magnetic molecule embedded within it, where the molecule consists in a set of electronic levels resembling the typical s-p orbitals of a metal hydride or an organometal, and a localized spin moment resembling the magnetic unit hosted by the latter and former type of molecules mentioned. LÄS MER