Sökning: "Variations in Assembly Processes"

Visar resultat 1 - 5 av 10 avhandlingar innehållade orden Variations in Assembly Processes.

  1. 1. Bound to the past: Historical contingency in aquatic microbial metacommunities

    Författare :Máté Vass; Silke Langenheder; Steven Declerck; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; metacommunity; historical processes; priority effects; community assembly.; Biology with specialization in Limnology; Biologi med inriktning mot limnologi;

    Sammanfattning : The composition of ecological communities differs due to a combination of different processes, which includes selection by local environmental conditions, dispersal from the regional species pool and random events. Additionally, historical processes such as past dispersal events may leave their imprint on communities as well, resulting in historically contingent communities. LÄS MER

  3. 2. Magnetically governed self-assembly of soft matter : A look into interfacial layering, crystallization and percolation

    Författare :Apurve Saini; Max Wolff; Vassilios Kapaklis; Pietro Tierno; Uppsala universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Self-assembly; Soft matter; Colloids; Magnetic nanoparticles; Ferrofluid; Solid-liquid interface; Neutron reflectometry; Electrical sensing; Microcontact; Materiefysik; Physics of Matter;

    Sammanfattning : Self-organisation is the key route for assembling colloidal particles into well-defined structures. Decisive for this are the interactions between the constituents, which are amongst others steric, electrostatic or magnetic. LÄS MER

  4. 3. On Remanufacturing Systems : Analysing and Managing Material Flows and Remanufacturing Processes

    Författare :Johan Östlin; Mats Björkman; Staffan Bröte; Linköpings universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Remanufacturing; After Market; Product Recovery; Lean Production; Production Economics; Manufacturing engineering; Produktionsteknik;

    Sammanfattning : The aim of remanufacturing is to retrieve a product’s inherent value when the product no longer fulfils the user’s desired needs. By taking advantage of this inherent value through different product recovery alternatives, there is a potential for both economically and environmental advantageous recovery of products. LÄS MER

  5. 4. Analysis of Deformation of Gas Diffusion Layers and the Impact on Performance of PEM Fuel Cells

    Författare :Jiatang Wang; Värmeöverföring; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; PEM fuel cell; compression ratio; assembly pressure; porosity; deformed GDL; electric resistance; transport phenomena; model; performance; analysis; OpenFOAM;

    Sammanfattning : Proton exchange membrane (PEM) fuel cells have been promoted due to significant breakthroughs in various aspects and increasing public interests. The porous features of the gas diffusion layer (GDL) and the necessary assembly processes generate localized pressure forces on the channel/shoulder structure of the bi-polar plates (BPP). LÄS MER

  7. 5. Modeling and Simulations of Multiphysics Phenomena ad Performance in Proton Exchange Membrane Fuel Cells

    Författare :Shian Li; Värmeöverföring; []
    Nyckelord :PEMFC; agglomerate model; interdigitated flow field; GDL deformation; flow field design; metal foam; cooling plate; non-uniform channel; wavy channel; modeling and simulation.;

    Sammanfattning : Proton exchange membrane fuel cells (PEMFCs) are considered as the mostpromising alternative power sources with a wide variety of applications owing to their attractive advantages compared to other conventional power sources. During the past decades, the cell performance has been gradually improved. LÄS MER