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Showing result 1 - 5 of 10 swedish dissertations matching the above criteria.

2. 1. Structural sound transmission and attenuation in lightweight structures

   Author : Lars-Göran Sjökvist; RISE; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; sound insulation; acoustics; wooden houses; Fourier transform; lightweight building; stiffened plate; junction; stiffeners; flanking transmission; attenuation;

   Abstract : Everyone wants a peaceful and quiet home, but in noisy cities it is a challenge to create such homes. New building techniques are mostly introduced for other purposes than noise control -- stability, economy, heat transfer and so on. READ MORE

4. 2. Structural-acoustic vibrations in wooden assemblies : Experimental modal analysis and finite element modelling

   Author : Åsa Bolmsvik; Torbjörn Ekevik; Andreas Linderholt; Anders Brandt; Anders Ågren; Linnéuniversitetet; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; wooden framed structure; light weight buildings; multi-storey; flanking transmission; junction; vibration distribution; impact noise; damping; elastomers; finite element analysis; experimental modal analysis; FRF; trästomme; träkonstruktion; träbyggnad; flervåningshus; EMA; FEM; flanktransmission; koppling; knutpunkt; vibrationsspridning; stomljud; stegljud; dämpning; elastomerer; finit elementmetod; experimentell modalanalys; accelerationsmätning; frekvensresponsfunktion; modalanalys;

   Abstract : This doctoral thesis concerns flanking transmission in light weight, wooden multi-storey buildings within the low frequency, primarily 20-120 Hz. The overall aim is to investigate how the finite element method can contribute in the design phase to evaluate different junctions regarding flanking transmission. READ MORE

5. 3. Vibroacoustic performance of wooden buildings : Prediction and Perception

   Author : Juan Negreira; Teknisk akustik; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Prediction tools; Low frequency vibrations; Vibroacoustics; Wooden buildings; Impact sound insulation; Finite element method; Vibration measurements; Flanking transmission; Elastomers; Design indicators; Vibration acceptability; Vibration annoyance; MEMS accelerometers;

   Abstract : When the Swedish building regulations in 1994 allowed wooden multi-storey buildings to be built, this type of lightweight construction became popular due to its low cost and ease of construction, as well as wood being a plentiful resource in Sweden. However, complaints amid inhabitants are often reported due to nuisances caused by disturbing vibrations and noise propagating in the building. READ MORE

6. 4. Phylogenetic and phenotypic properties of HIV-1 variants of different subtypes, in mother to child transmission

   Author : Rozina Caridha; Karolinska Institutet; Karolinska Institutet; []
   Keywords : ;

   Abstract : Transmission from mother to child is the most common way that children contract HIV-1 infection in developing countries; transmission through this route is prevented in most developed countries by antiretroviral treatment, elective Caesarean section and absence of breast-feeding. However, these measures are not fully available in developing countries. READ MORE

7. 5. Regulation of mitochondrial transcription and mtDNA copy number in mammals

   Author : Anja Rantanen; Karolinska Institutet; Karolinska Institutet; []
   Keywords : mtDNA; transcription factor; evolution; transmission; inheritance; expression; mitochondria; transgenic; mapping; testis-specific;

   Abstract : Functional mitochondria are essential for wellbeing of the cell and the whole organism. Gene expression from the mitochondrial genome (mtDNA) is indispensable for oxidative phosphorylation, but also for the replication of mtDNA, as the replication primers are processed from mtDNA transcripts. READ MORE