Sökning: "density"

Visar resultat 1 - 5 av 4064 avhandlingar innehållade ordet density.

  1. 1. Density variations during solidification of lamellar graphite iron

    Författare :Kristina Hellström; Attila Diószegi; Lucian Diaconu; Primoz Mrvar; Högskolan i Jönköping; []
    Nyckelord :ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; density; grey cast iron; measurements; modelling; densitet; gjutjärn; mätning; simulering;

    Sammanfattning : .... LÄS MER

  2. 2. Finite temperature and density QED with external fields

    Författare :David Persson; Chalmers University of Technology; []
    Nyckelord :magnetic; chemical potential; effective action; density; finite temperature; relativistic fermion gas; QED;

    Sammanfattning : .... LÄS MER

  3. 3. Novel approaches for achieving full density powder metallurgy steels

    Författare :Maheswaran Vattur Sundaram; Chalmers University of Technology; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Cr- and Mo-alloyed PM steels; vacuum sintering; high density; full density; hot isostatic pressing.; cold isostatic pressing; liquid phase sintering; master alloy; double pressing-double sintering; powder metallurgy steels; sintering; water atomised powder;

    Sammanfattning : Powder metallurgy (PM) is one of the most resource-efficient methods for manufacturing structural components with complex shapes. The utilisation of the metal powder to shape the components allows to minimise material waste and increase energy efficiency. LÄS MER

  4. 4. van der Waals Density Functionals

    Författare :Ylva Andersson; Chalmers University of Technology; []
    Nyckelord :van der Waals molecules; physisorption; van der Waals interactions; density-functional theory; exchange-correlation energy; scanning-force microscopy; adhesion;

    Sammanfattning : Methods using local or semi local approximations (LDA, GGA etc.) for the exchange-correlation energy in the density-functional theory (DFT) do not include van der Waals interactions. LÄS MER

  5. 5. Challenges in Enzyme Catalysis - Photosystem II and Orotidine Decarboxylase : A Density Functional Theory Treatment

    Författare :Marcus Lundberg; Margareta Blomberg; Per Siegbahn; Jeremy Harvey; Stockholms universitet; []
    Nyckelord :NATURAL SCIENCES; NATURVETENSKAP; NATURVETENSKAP; NATURAL SCIENCES; photosystem II; oxyl radical; manganese systems; orotidine decarboxylase; reaction mechanism; density functional theory; Quantum chemistry; Kvantkemi;

    Sammanfattning : Possibly the most fascinating biochemical mechanism remaining to be solved is the formation of oxygen from water in photosystem II. This is a critical part of the photosynthetic reaction that makes solar energy accessible to living organisms. LÄS MER