Sökning: "Force variation"

Visar resultat 1 - 5 av 144 avhandlingar innehållade orden Force variation.

  1. 1. Imaging materials with intermodulation : Studies in multifrequency atomic force microscopy

    Författare :Daniel Forchheimer; David Haviland; Arvind Raman; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; atomic force microscopy; nonlinear dynamics; frequency mixing; force reconstruction; Fysik; Physics;

    Sammanfattning : The Atomic Force Microscope (AFM) is a tool for imaging surfaces at the microand nano meter scale. The microscope senses the force acting between a surfaceand a tip positioned at the end of a micro-cantilever, forming an image of the surface topography. LÄS MER

  3. 2. Biomechanical studies of finger extension function. Analysis with a new force measuring device and ultrasound examination in rheumatoid arthritis and healhty muscles

    Författare :Sofia Brorsson; Elena Gutierrez Farewik; Göteborgs universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Grip force; finger extension force; ultrasound; hand exercise; rheumatoid arthritis; muscle architecture; GAT; DASH; SF-36; Muscles;

    Sammanfattning : Aims: The overall aim of this thesis was to further our understanding of extensor muscles and their role for hand function. The aims of the studies were: To develop and evaluate a new device for finger extensor force measurements. To evaluate ultrasound as a tool for assessment of muscle architecture. LÄS MER

  4. 3. Grid Integration and Impact of a Wave Power System

    Författare :Arvind Parwal; Cecilia Boström; Damir Šljivac; Uppsala universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; ANN; buck-boost converter; current control; energy storage system; force control; flicker; FPGA control; grid integartion; harmonics; linear generator; PHIL; microgrid; voltage variation; wave energy; WEC; Engineering Science with specialization in Science of Electricity; Teknisk fysik med inriktning mot elektricitetslära;

    Sammanfattning : Increasing energy consumption and concern for carbon emissions has boosted the demand for renewable energy production. The focus on renewable energy has gained much attention in wind, solar, hydro and wave power generations. Wave power has great potential due to its high energy density but there are challenges as well. LÄS MER

  5. 4. On Manufacturing Technology as an Enabler of Flexibility : Affordable Reconfigurable Tooling and Force-Controlled Robotics

    Författare :Marie Jonsson; Mats Björkman; Lars Pejryd; Linköpings universitet; []
    Nyckelord :;

    Sammanfattning : In order to survive in today’s global market many manufacturing companies seek flexibility to reduce product lead times and meet changing market demands. Manufacturing equipment forms the base of the production system and manufacturing technology with the capability to adapt to any changes in prerequisites is thus a key enabler of flexibility. LÄS MER

  7. 5. Avian MHC: variation and selection in the wild

    Författare :Helena Westerdahl; MEMEG; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; polymorphism; balancing selection; cDNA; avian malaria; great reed warbler; Djurekologi; bird; Animal ecology; immune defence; MHC class II; Major Histocompatibility Complex; MHC class I;

    Sammanfattning : In vertebrates the Major Histocompatibility Complex (MHC) plays a central role in the specific immune defence against various pathogens. Compared with other coding genes the MHC genes exhibit an extremely high level of polymorphism that is maintained by balancing selection. LÄS MER