Search for dissertations about: "Ag"

Showing result 1 - 5 of 232 swedish dissertations containing the word Ag.

  1. 1. Let's Eat Together: Methods and Tools for Inclusive City Design Practice

    University dissertation from Gothenburg : Chalmers tekniska högskola

    Author : Chotima Ag-ukrikul; [2019]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; HUMANIORA; HUMANITIES; HUMANIORA; HUMANITIES; Experience-based; Inclusive city design; Commensality; Liveable City; Eatscape; Urban Vernacular; Design Ritual;

    Abstract : This thesis studies how the practice of eating together impacts on liveable city making. In this thesis, the practice of eating together is called commensality, which is a collective action that creates shared environments. Through time these environments are turned into recognized meeting places where locals gather. READ MORE

  2. 2. Microstructure of the Schottky contact : Ag/GaAs and Au/GaAs

    University dissertation from Gothenburg : Chalmers tekniska högskola

    Author : Qiu-Hong Hu; [1993]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Au; atom-probe fiels-ion microscopy; Schottky contact; interface; Ag; microstructure; transmission electron microscopy; GaAs; oxygen;

    Abstract : .... READ MORE

  3. 3. Surface Studies of Model Systems relevant for Pd and Ag Catalysts

    University dissertation from Division of Synchrotron Radiation Research, Dept. of Physics, Lund University

    Author : Natalia Martin; [2014]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; High Pressure X-ray Photoelectron Spectroscopy; X-ray Photoelectron Spectroscopy; alumina; Ag; NiAl; Pd; catalysis; model system; Surface X-ray Diffraction; Low Energy Electron Diffraction; Scanning Tunneling Microscopy; Fysicumarkivet A:2014:Martin;

    Abstract : This PhD thesis reports on investigations of the atomic scale structure of model catalysts relevant for the catalytic oxidation of CO and methane over Pd, and NOx reduction over silver-alumina, important reactions in automotive catalysts. By using complementary experimental techniques such as X-ray Photoelectron Spectroscopy, High Pressure X-ray Photoelectron Spectroscopy, Surface X-ray Diffraction, Low Energy Electron Diffraction, Infrared Spectroscopy, and Scanning Tunneling Microscopy, combined with theoretical calculations, the work presented in this thesis aims at an atomistic characterization of the active sites for silver-alumina and Pd model catalysts which may help to the design of new and improved catalysts. READ MORE

  4. 4. Synthesis, Characterization, and Evaluation of Ag-based Electrical Contact Materials

    University dissertation from Uppsala : Acta Universitatis Upsaliensis

    Author : Fang Mao; Ulf Jansson; Mikael Olsson; [2017]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; electrical contact; bulk; coating; Ag-based alloys; Ag-based delafossite; AgI; graphene; graphene oxide; combinatorial material science; dc magnetron sputtering; friction; wear; hardness; contact resistance;

    Abstract : Ag is a widely used electrical contact material due to its excellent electrical properties. The problems with Ag are that it is soft and has poor tribological properties (high friction and wear in Ag/Ag sliding contacts). READ MORE

  5. 5. Lake sediment as environmental archive : natural and anthropogenic influence on the chronology of trace elements

    University dissertation from Örebro : Örebro universitetsbibliotek

    Author : Evastina Grahn; Stefan Karlsson; Anders Düker; Bo Bergbäck; [2006]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; lake sediment; environmental pollution; trace elements; chronology; diagenesis; Ag; Be; Ga; In; Pb; Sb; Tl; NATURAL SCIENCES Chemistry Environmental chemistry; NATURVETENSKAP Kemi Miljökemi; Enviromental Science; Miljövetenskap;

    Abstract : The focus of this thesis is the historical pollution of some seldom-monitored trace elements (SMTEs; Ag, Be, Ga, In, Sb and Tl) that have been involuntarily released for several thousands of years but whose usage have increased during the industrial era. Sediment cores from four rural lakes in a south to north transect in central Sweden, and two urban lakes have been used as environmental archives for chronological studies. READ MORE