Sökning: "Clock"

Visar resultat 11 - 15 av 252 avhandlingar innehållade ordet Clock.

  1. 11. Dating Divergence Times in Phylogenies

    Författare :Cajsa Lisa Anderson; Kåre Bremer; Katleen M. Pryer; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; systematic biology; divergence time; nonprametric rate smoothing; Bayesian; multidivtime; eudicots; Neoaves; monocots; dating; molecular clock; relaxed clock; age constraint; fossil; calibration; PATHd8; penalized likelihood; Biology; Biologi;

    Sammanfattning : This thesis concerns different aspects of dating divergence times in phylogenetic trees, using molecular data and multiple fossil age constraints.Datings of phylogenetically basal eudicots, monocots and modern birds (Neoaves) are presented. Large phylograms and multiple fossil constraints were used in all these studies. LÄS MER

  3. 12. Lärares förtroendearbetstid

    Författare :Per Lindqvist; Pedagogik; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Pedagogy and didactics; teacher thinking; stress; Teachers; grounded theory; Pedagogik; didaktik; Lärare arbete och arbetsmarknad Sverige;

    Sammanfattning : The aim of this study is to generate a grounded theory about the work done by teachers. The initial area of data collection was the work done by teachers in their non-regulated hours, in which the teachers are expected to carry out professional activities like planning, preparation, correcting and spontaneous contacts with students, parents and colleagues. LÄS MER

  4. 13. Solvent–Solute Interaction : Studied by Synchrotron Radiation Based Photo and Auger Electron Spectroscopies

    Författare :Wandared Pokapanich; Olle Björneholm; Gunnar Öhrwall; Maxim Tchaplyguine; Arnaldo Naves de Brito; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Interatomic Coulombic Decay; ICD; Auger electron spectroscopy; AES; X-ray photoelectron spectroscopy; XPS; Ultra-violet spectroscopy; UPS; localized; delocalized; double ionization potential; DIP; two hole; final states; Water; H2O; Potassium chloride; KCl; Calcium chloride; CaCl2; Ammonium; NH4; Core hole; clock; lifetime; solvated; ion; alkali; halide; Coster Kronig; MAX-lab; BESSY; Liquid physics; Vätskefysik; Physics with spec. in Atomic; Molecular and Condensed Matter Physics; Fysik med inriktning mot atom- molekyl- och kondenserande materiens fysik;

    Sammanfattning : Aqueous solutions were studied using photoelectron and Auger spectroscopy, based on synchrotron radiation and a liquid micro-jet setup. By varying the photon energy in photoelectron spectra, we depth profiled an aqueous tetrabutylammonium iodide (TBAI) solution. LÄS MER

  5. 14. Core-hole Clock Spectroscopy Using Hard X-rays : Exciting States in Condensed Matter

    Författare :Fredrik Johansson; Andreas Lindblad; Carla Puglia; Tomas Edvinsson; Marc Simon; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; core-hole clock; resonant Auger; XPS; black phosphorous; TMDC; perovskite; graphene; coincidences spectroscopy; synchrotron radiation; HAXPES;

    Sammanfattning : This thesis is about how electrons move from one place to another, that is charge transfer dynamics. Charge transfer dynamics is an important property governing chemical and physical changes that form the base for many applications such as electronics, optoelectronics and catalysis. LÄS MER

  7. 15. Pre-scaled clock recovery and ultra-high bit rate soliton transmission over installed optical fibres

    Författare :Jonas Hansryd; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; time-division multiplexing; polarization-mode dispersion; optical fibre; optical solitions; installed fibre; all-optical clock recovery; pre-scaled clock recovery; differential group delay; field experiment;

    Sammanfattning : .... LÄS MER