Essays about: "Ekvivalenta modellen"

Showing result 11 - 15 of 15 essays containing the words Ekvivalenta modellen.

  1. 11. Equivalence of the sine-Gordon Model and the Massive Thirring Model: Derivations and Application

    University essay from Lunds universitet/Teoretisk partikelfysik - Geonomgår omorganisation

    Author : Erik Linnér; [2017]
    Keywords : sine-Gordon model; Thirring model; Schwinger model; Bosonization; Physics and Astronomy;

    Abstract : The equivalence of the sine-Gordon model and the massive Thirring model, (1+1) dimensional theories of a single scalar field respectively a single Dirac field, is derived by two alternative approaches. The equivalence is derived by a comparison of the perturbation expansions of the correlation functions of the theories around the corresponding massless theories. READ MORE

  3. 12. Charging time estimation and study of charging behavior for automotive Li-ion battery cells using a Matlab/Simulink model

    University essay from KTH/Skolan för elektro- och systemteknik (EES)

    Author : Wenzhuo Wu; [2016]
    Keywords : Charging time estimation; HIL; Li-ion battery; Passive balancing; Hardware-in-the-loop; laddtid; litiumjonbatteri; passiv balansering;

    Abstract : An accurate estimation of the charging time of an automotive traction battery is possible only with the knowledge of different parameters of the battery and the vehicle. If this information is not available to the driver, the full time needed for charging of the battery may have to be assessed only from experience. READ MORE

  4. 13. Refrigeration system performance using alternative refrigerants

    University essay from KTH/Energiteknik

    Author : Peter Eriksson; [2015]
    Keywords : ;

    Abstract : The European Parliament has shown its legislative capabilities by adopting a tough approach on the reduction of fluorinated gases (F-gases). The EU Regulation No 517/2014, will phase out F-gases with high global warming potential (GWP) within a well-defined step down time schedule. READ MORE

  5. 14. Electromagnetical model of an induction motor in COMSOL Multiphysics

    University essay from KTH/Elektrisk energiomvandling

    Author : Viktor Wilow; [2014]
    Keywords : Electromagnetical model; Induction motor; Finite element method; COMSOL Multiphysics;

    Abstract : Ansys, Flux or COMSOL are examples of software-tools that can be used to study magnetic noise, caused by magnetic forces in the air-gap, in induction motors. The project team wanted to use COMSOL in this thesis. The electromagnetical domain needs to be coupled to the mechanical domain to complete the study. READ MORE

  6. 15. Behovet av blyhandskar som skydd mot sekundärstrålning vid röntgenundersökning av djur

    University essay from SLU/Dept. of Animal Environment and Health

    Author : Ulrika Palfelt; [2012]
    Keywords : djuromvårdnad; djurhälsopersonal; blyhandskar; sekundärstrålning; röntgenundersökning; legitimerad djursjukskötare;

    Abstract : X-rays are a potential risk for animal health care personnel. The present study will examine the risks for scattered radiation to the personnel, if no lead gloves are used when holding an animal during the x-ray examination. READ MORE