Search for dissertations about: "source strength"

Showing result 21 - 25 of 155 swedish dissertations containing the words source strength.

  2. 21. Acoustic time histories of vibrating partial sources

    Author : Nicklas Frenne; Luleå tekniska universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Teknisk akustik; Engineering Acoustics;

    Abstract : The research in this thesis evaluates a method designed for separation of individual or partial sounds from multiple sounds generated by a sound source (e.g. a diesel engine). The sound of sound sources can be recorded to reproduce a sound event in an environment, just like a photo or moving picture can be used to illustrate a visual impression. READ MORE

  4. 22. Neutron Irradiation Techniques

    Author : Julius Scherzinger; Kärnfysik; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; actinide Be; fast-neutrons; NE-213 liquid scintillator; He-4 scintillators; pulse-shape discrimination; Cf-252; absolute detection efficiency; neutron irradiation; Fysicumarkivet A:2016:Scherzinger;

    Abstract : The He-3 “crisis” has become a fact in the last decade and large scale neutron detectors based on He-3 technologies have become unaffordable. This new He-3 reality has resulted in a major effort worldwide to develop replacement neutron-detector technologies. READ MORE

  5. 23. A quantum-chemical study to the magnetic characteristics of methanol and its applications in astronomy

    Author : Boy Lankhaar; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; methanol; maser polarization; star formation; magnetic fields; masers;

    Abstract : Magnetic fields play an important role during star formation. Direct magnetic field strength observations have proven specifically challenging in the dynamic protostellar phase. READ MORE

  6. 24. Carbon gas biogeochemistry of a northern peatland - in a dynamic permafrost landscape

    Author : Kristina Bäckstrand; Patrick M. Crill; Torben R. Christensen; David Bastviken; Kimberly P. Wickland; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Carbon balance; Carbon exchange; Peatland; Subarctic; Climate change; Earth sciences; Geovetenskap; geokemi; Geochemistry;

    Abstract : This thesis is about biogeochemical processes of a northern peatland and their importance as a link between the climate and the terrestrial system. Increased temperatures on a global level, and particularly in the Arctic, have led to melting permafrost and changes in hydrology. READ MORE

  7. 25. A three dimensional scaffold for single staged tissue engineering

    Author : Said Zeiai; Karolinska Institutet; Karolinska Institutet; []
    Keywords : ;

    Abstract : Study I. Aims: Evaluate a collagen-PCL scaffold with minced bladder mucosa in vitro. M&M: Minced tissue was cultured on top of the scaffold. Scaffold properties were evaluated. READ MORE