Search for dissertations about: "silencer"

Showing result 1 - 5 of 18 swedish dissertations containing the word silencer.

2. 1. Experimental and Numerical Multi-port Eduction for Duct Acoustics

   Author : Stefan Sack; Abom Mats; Phillip Joseph; KTH; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; acoustics; aeroacoustics; flowacoustics; multi-ports; orifice; silencer; experiment; numeric; IDDES; LNSE; optimization; test rig; Monte Carlo; Teknisk mekanik; Engineering Mechanics;

   Abstract : Sound generation and propagation in circular ducts for frequencies beyond the cut-on frequencies of several higher order acoustic modes is investigated. To achieve this, experimental and numerical set-ups are designed and used to research aeroacoustic interactions between in-duct components and to conceive noise mitigation strategies. READ MORE

4. 2. Aeroacoustics Studies of Duct Branches with Application to Silencers

   Author : Mikael Karlsson; Mats Åbom; Luc Mongeau; KTH; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; silencer; muffler; confined flows; flow duct; aeroacoustics; vortex sound; acoustic multiports; linear stability; self-sustained oscillations; whistling; Herschel-Quincke tube; acoustic resonator; Fluid mechanics; Strömningsmekanik;

   Abstract : New methodologies and concepts for developing compact and energy efficient automotive exhaust systems have been studied. This originates in the growing concern for global warming, to which road transportation is a major contributor. READ MORE

5. 3. Regulation of Human Papillomavirus Type 16 Late L1 mRNA Splicing

   Author : Xiaoze Li; Avdelningen för medicinsk mikrobiologi; []
   Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; HPV-16; cervical cancer; RNA processing; alternative splicing; splicing enhancer; splicing silencer; viral persistance; SR proteins; hnRNP proteins;

   Abstract : Human papillomaviruses (HPVs) cause almost half of the human cancers that are attributable to viruses. HPV type 16 is the most carcinogenic type among the HPVs and is detected in 50% of all cervical cancers. HPV-16 infects epithelial cells and HPV-16 gene expression is tightly linked to the differentiation stage of the infected cells. READ MORE

6. 4. Functional analysis of genetic variants in putative low penetrate breast cancer genes

   Author : Haixin Lei; Karolinska Institutet; Karolinska Institutet; []
   Keywords : Breast cancer; low penetrance gene; CDH1; ILC; IDC; mutation; SNP; BA CHI; ATM; EST1; cryptic splice site; SR proteins; dinucleotide repeats; splicing silencer.;

   Abstract : Paper I & II: CDH1 germline mutations predispose individuals to diffuse gastric cancer, but its role in breast cancer is less clear. Somatic CDH1 mutations were reported to be frequent in lobular tumours (ILC), but they have not been found in ductal carcinomas (IDC). READ MORE

7. 5. Regulation of Human Papillomavirus Type 16 mRNA Splicing and Polyadenylation

   Author : Xiaomin Zhao; Stefan Schwartz; Barklie Clements; Uppsala universitet; []
   Keywords : Medical sciences; human papillomavirus type 16; gene regulation; splicing; polyadenylation; 3 UTR; MEDICIN OCH VÅRD; MEDICINE; MEDICIN;

   Abstract : Human papillomavirus type 16 (HPV-16) is the major causative agent of cervical cancer. The life cycle of this oncogenic DNA tumour virus is strictly associated with the differentiation program of the infected epithelial cells. Expression of the viral capsid genes L1 and L2 can only be detected in the terminally differentiated epithelial cells. READ MORE