Sökning: "HARD SURFACES"

Visar resultat 6 - 10 av 111 avhandlingar innehållade orden HARD SURFACES.

  1. 6. Surfactants at non-polar surfaces

    Författare :Marcus Persson; KTH; []
    Nyckelord :nonionic surfactants; SDS; surface tension; wetting; surface force; disjoining pressure isotherm; adhesion;

    Sammanfattning : The aim of this thesis work was to investigate theadsorption of surfactants to different nonpolar interfaces.Particularly, the effects of the polar group and the nature ofthe hydrophobic interface were elucidated. The interfacialbehavior of the liquid-vapor interface was investigated bymeans of surface tension measurements. LÄS MER

  3. 7. Characterization of artificially soft surfaces and their applications in antenna design

    Författare :Zhinong Ying; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; dipole antenna; UTD; GPS; broadband antennas; circular polarization; feed; moment method; soft and hard surfaces; surface impeddance; corrugated horn; antennas; multipath effect; microstrip antenna; magnetic coating; spiral antenna; corrugated surface; dielectric loaded surface; ground plane; slot antenna; monopole antenna; helical antenna; choke-ring;

    Sammanfattning : .... LÄS MER

  4. 8. Single and dual band horns for multi-beam satellite antennas - application of artificially hard surfaces

    Författare :Omid Sotoudeh; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Multi-beam reflector antennas; Multi-mode hard horns;

    Sammanfattning : The latest trend for the multimedia satellite systems is operation at the Ka-band, 17.7-20.2 GHz downlink and 27.5-30. LÄS MER

  5. 9. Analysis of microstrip structures for active and passive antennas and for hard surfaces

    Författare :Zvonimir Sipus; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Sammanfattning : .... LÄS MER

  7. 10. A multi-prism lens for hard X-Rays

    Författare :Björn Cederström; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; x-ray; optics; refractive; lens; mammography; synchrotron; Physics; Fysik;

    Sammanfattning : This thesis describes a new type of refractive lens for hardx-rays. It is shown that a linear array of prisms, slightlyinclined with respect to the optical axis, will form a linefocus at a certain distance from the lens. Hence, the namemulti-prism lens. LÄS MER