Search for dissertations about: "Frequency Effects"
Showing result 1 - 5 of 1224 swedish dissertations containing the words Frequency Effects.
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1. Low frequency noise during work. Effects on performance and annoyance
Abstract : Aims. Low frequency noise (LFN) is defined as "a noise with a dominant frequency content of 20 to 200 Hz". Common sources of LFN in occupational environments are ventilation, heating and air-conditioning systems, computer network installations and compressors. READ MORE
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2. Extremely low and microwave frequency electromagnetic fields : influence on biological systems
Abstract : .... READ MORE
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3. Sleep disordered breathing at work : Cause and effects
Abstract : The recent discovery of obstructive sleep apnea syndrome (OSAS) as a prevalent disorder has highlightedthe fact that snoring is not just a harmless noise. Snoring and OSAS in the work milieu has hardly beeninvestigated, which makes it important to identify both risk factors and consequences in the work place. READ MORE
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4. Impact of adjacent dielectrics on the high-frequency performance of graphene field-effect transistors
Abstract : Transistors operating at high frequencies are the basic building blocks of millimeter wave communication and sensor systems. The high velocity and mobility of carriers in graphene can open ways for development of ultra-fast group IV transistors with similar or even better performance than that achieved with III-V based semiconductors. READ MORE
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5. Pulsed Electric Field Food Treatment and Low Frequency Bioelectromagnetics
Abstract : This thesis is divided in two parts, both of which address the interaction between biological cells (especially cell membranes) and electromagnetic fields. The first part deals with the application of intense pulsed electric fields (PEF) in foods. It is intended to be a non-thermal method to inactivate microorganisms. READ MORE