Search for dissertations about: "trap distribution"

Showing result 1 - 5 of 47 swedish dissertations containing the words trap distribution.

  2. 1. Nonlinear Modeling of FETs for Microwave Switches and Amplifiers

    Author : Ankur Prasad; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; HEMT; symmetry; small-signal model; field-plate.; GaAs; GaN; nonlinear model; trap model; symmetrical model; trap; model;

    Abstract : The exponential growth in wireless systems require rapid prototyping of radio frequency circuits (RF) using computer-aided design (CAD) enabled models. Most of the RF circuits (e.g. switches, amplifiers, mixers, etc. READ MORE

  4. 2. SMILETRAP I / II : Precision Improvements in Penning-Trap Mass-Spectrometry

    Author : Markus Suhonen Linné; Reinhold Schuch; Lutz Schweikhard; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Penning trap; Mass spectrometers; Instrumentation and methods for time-of-flight TOF spectroscopy; Highly charged ions; Atomic physics; Atomfysik; fysik; Physics;

    Abstract : This thesis describes the final precision mass measurements with SMILETRAP I, where a relative precision of < 1 ppb (10-9) was reached routinely, and the development of SMILETRAP II, aiming for measurements with < 0.1 ppb relative precision. READ MORE

  5. 3. Phylogeny, taxonomy and species delimitation of water mites and velvet mites

    Author : Jeanette Stålstedt; Johannes Bergsten; Fredrik Ronquist; Joanna Mąkol; Ashley Dowling; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Acariformes; Parasitengona; Hydrachnidia; Trombidia; water mites; velvet mites; taxonomy; cryptic species; species delimitation; DNA; GMYC; experimental rearing; new synonyms; distribution; phylogeny; revised classification; Systematic Zoology; zoologisk systematik och evolutionsforskning;

    Abstract : This study is part of the Swedish Taxonomy Initiative (STI) - one of the most ambitious all taxa biodiversity inventories in the world. One of the pillars in STI is to support taxonomic research on the most neglected taxonomic groups with the aim to lift the level of knowledge of biodiversity in the country. READ MORE

  6. 4. Ecology of nematophagous fungi in agricultural soils

    Author : Lotta Persmark; Biologiska institutionen; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Organic farming; Fungistasis; Competition; Bacteria; Conidial traps; Rhizosphere; Seasonal variation; Distribution; Endoparasitic; Nematode; Nematode-trapping; Ecology; Ekologi;

    Abstract : Nematophagous fungi possess various mechanisms for infecting nematodes, and are either obligate parasites or facultative saprophytes. Nematophagous fungi have a potential as biological control agents against plant- and animal-parasitic nematodes. READ MORE

  7. 5. Studies of Charge Transport Processes in Dye-sensitized Solar Cells

    Author : Kristofer Fredin; Anders Hagfeldt; Mukundan Thelakkat; KTH; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; solar cell; mesoporous; dye-sensitized; model; simulation; electron transport; trap distribution; Physical chemistry; Fysikalisk kemi;

    Abstract : Dye-sensitized solar cells (DSCs) have attained considerable attention during the last decade because of the potential of becoming a low cost alternative to silicon based solar cells. Although efficiencies exceeding 10% in full sunlight have been presented, major improvements of the system are however limited. READ MORE