Search for dissertations about: "contacting"

Showing result 1 - 5 of 94 swedish dissertations containing the word contacting.

  2. 1. A TEM Investigation of Contact between Nanoparticles

    Author : Yiming Yao; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; LACBED; CBED; nanoparticles; interface; adhesion; image simulation; energy filtering; misorientation; contacting; strain field TEM;

    Abstract : Interaction between nanoparticles (1~100nm) provides us with answers to fundamental questions in many important applications e.g. adhesion, friction, and cold welding. The attractive force arises from the reduction of the total free surface and thus the total surface energy due to the formation of a boundary between the contacting particles. READ MORE

  4. 2. A TEM investigation of adhesion between nanoparticles

    Author : Yiming Yao; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; CBED; interface; image simulation; nano-particle contacting; TEM; HREM; contacting stress;

    Abstract : .... READ MORE

  5. 3. Microwave Transistor Noise Model Extraction Methods and a Non-Contacting Scattering Parameter Measurement Method

    Author : Jörgen Stenarson; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; extraction; S-parameter; noise parameter; vector network analyzer; electro-magnetic probe; microwave; non-contacting testing; transistor noise model; VNA; EM-probe; non-invasive testing;

    Abstract : This thesis has two parts. The first part discuss noise model extraction methods for FETs. The second part describe theory and implementation of a non-contacting S-parameter measurement method. Noise is an important aspect for a circuit designer, because noise generated in the circuit is a sensitivity limiting factor. READ MORE

  6. 4. Modeling and Simulation of Contacting Flexible Bodies in Multibody Systems

    Author : Iakov Nakhimovski; Dag Fritzson; Linköpings universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Mechanic; simulation programme; algorithms; computer software; industrial application; Computer science; Datavetenskap;

    Abstract : This thesis summarizes the equations, algorithms and design decisions necessary for dynamic simulation of flexible bodies with moving contacts. The assumed general shape function approach is also presented. The approach is expected to be computationally less expensive than FEM approaches and easier to use than other reduction techniques. READ MORE

  7. 5. Functional role of cerebrospinal fluid contacting cells in the spinal cord and hypothalamus

    Author : Elham Jalalvand; Karolinska Institutet; Karolinska Institutet; []
    Keywords : ;

    Abstract : Cerebrospinal fluid-contacting (CSF-c) cells are found lining the walls of the central canal and the ventricles throughout the vertebrate phylum, but their function has remained elusive. The aim here was to investigate the physiological role of CSF-c cells in the spinal cord and hypothalamus. READ MORE