Search for dissertations about: "Low frequency vibrations"

Showing result 1 - 5 of 53 swedish dissertations containing the words Low frequency vibrations.

  1. 1. Low Frequency Impact Sound in Timber Buildings Simulations and Measurements

    University dissertation from Linnaeus University

    Author : Jörgen Olsson; Linnéuniversitetet.; [2016]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Byggteknik; Civil engineering; Low-frequency; impact sound; light weight floor; timber joist floor; tapping machine; multi-storey timber building; frequency response functions.; Stegljud; Impact sound;

    Abstract : An increased share of construction with timber is one possible way of achieving more sustainable and energy-efficient life cycles of buildings. The main reason is that wood is a renewable material and buildings require a large amount of resources. READ MORE

  2. 2. Difficulties to Read and Write Under Lateral Vibration Exposure Contextual Studies Of Train Passengers Ride Comfort

    University dissertation from Stockholm : KTH

    Author : Jerker Sundström; KTH.; [2006]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; lateral vibrations; passenger activities; reading; writing; sitting posture; frequency weighting; rated difficulty; field study; laboratory study; transient vibrations; stationary vibrations.; TECHNOLOGY Engineering mechanics Vehicle engineering; TEKNIKVETENSKAP Teknisk mekanik Farkostteknik;

    Abstract : Many people use the train both as a daily means of transport as well as a working place to carry out activities such as reading or writing. There are, however, several important factors in this environment that will hamper good performance of such activities. READ MORE

  3. 3. Terahertz radiation as a pump and probe for studying low frequency vibrations in proteins

    University dissertation from Stockholm : KTH

    Author : Ida Lundholm; Göteborgs universitet.; Gothenburg University.; [2015]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Terahertz radiation; Protein dynamics;

    Abstract : Many functionally important structural changes in proteins proceed along the direction of their lowest frequency vibrations. These vibrations correspond to picosecond collective dynamics. Establishing the fundamental relationship between these vibrations and protein function remains a challenge within biophysics. READ MORE

  4. 4. Perception of Sound and Vibration in Heavy Trucks

    University dissertation from Stockholm : KTH

    Author : Anders Genell; [2008]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; spectral balance.; meaning; low frequency; product sound quality; annoyance; emotional reactions;

    Abstract : Interior truck cabin sound has for some time been a concern for manufacturers. Today reasonably low sound pressure levels have been achieved using passive absorption. However low frequency sound is difficult to passively absorb and will hence dominate the interior sound. READ MORE

  5. 5. Development of Zinc Oxide Piezoelectric Nanogenerators for Low Frequency Applications

    University dissertation from Linköping : Linköping University Electronic Press

    Author : Eiman Satti Nour; Linköpings universitet.; Linköpings universitet.; [2016]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; Zinc oxide ZnO ; hydrothermal growth; piezoelectricity; nanowires NWs ; nanogenerator NG ; energy harvesting; wireless data transmission;

    Abstract : Energy harvesting using piezoelectric nanomaterials provides an opportunity for advancement towards self-powered systems. Self-powered systems are a new emerging technology, which allows the use of a system or a device that perform a function without the need for external power source like for example, a battery or any other type of source. READ MORE