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Showing result 1 - 5 of 134 swedish dissertations matching the above criteria.

  2. 1. Insights into Stability Aspects of Novel Negative Electrodes for Li-ion Batteries

    Author : Hanna Bryngelsson; Kristina Edström; Stefania Panero; Uppsala universitet; []
    Keywords : Inorganic chemistry; Li-ion batteries; anode materials; Sb; Cu2Sb; electrodeposition; Oorganisk kemi;

    Abstract : Demands for high energy-density batteries have sharpened with the increased use of portable electronic devices, as has the focus global warming is now placing on the need for electric and electric-hybrid vehicles. Li-ion battery technology is superior to other rechargeable battery technologies in both energy- and power-density. READ MORE

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

    Author : Evastina Grahn; Stefan Karlsson; Anders Düker; Bo Bergbäck; Örebro universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; lake sediment; environmental pollution; trace elements; chronology; diagenesis; Ag; Be; Ga; In; Pb; Sb; Tl; Environmental chemistry; 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

  5. 3. A study on InAs/Ga1-χ-InχSb superlattices

    Author : Jöran H. Roslund; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Si-doping of Ga1- #967; < sub>-In #967; < sub>Sb; solderless substrate mounting; < sub>Sb superlattices; InAs Ga1- #967; envelope-function calculations; molecular-beam epitaxy; < sub>-In #967;

    Abstract : .... READ MORE

  6. 4. Selected topics in frequency estimation

    Author : Tomas Andersson; KTH; []
    Keywords : ;

    Abstract : Frequency estimation has been studied for a number of years.One reason for this is that the problem is easy to understand,but difficult to solve. Another reason, for sure, is the largenumber of applications that involves frequency estimation, e. READ MORE

  7. 5. Spatial and spatio-temporal processing with antenna arrays in wireless systems

    Author : David Astély; KTH; []
    Keywords : ;

    Abstract : This thesis treats some modeling and estimation problems inthe fieldof antenna array signal processing. With multipleantennas at thereceive side, the spatial dimension is added,and processing is performed in both the temporal and spatialdomain. READ MORE