Sökning: "Downstream Region DR"

Visar resultat 1 - 5 av 11 avhandlingar innehållade orden Downstream Region DR.

1. 1. RNA-mediated virulence gene regulation in the human pathogen Listeria monocytogenes

   Författare :Edmund Loh; Jörgen Johansson; Nancy Freitag; Umeå universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Listeria monocytogenes; virulence; ncRNAs; PrfA; 5´-UTRs; Molecular biology; Molekylärbiologi; molekylärbiologi; Molecular Biology;

   Sammanfattning : The Gram-positive human pathogen Listeria monocytogenes uses a wide range of virulence factors for its pathogenesis. The majority of its virulence genes are encoded on a 9-kb pathogenicity island and are controlled by the transcriptional activator PrfA. LÄS MER

3. 2. The role of the type I interferons and viperin during neurotropic flavivirus infection

   Författare :Richard Lindqvist; Anna Överby Wernstedt; Daniel Ruzek; Umeå universitet; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; TBEV; Flavivirus; Interferon; Neurotropic; Viperin;

   Sammanfattning : Flaviviruses are globally distributed pathogens that cause millions of human infections annually. One of the most detrimental outcomes of flavivirus infection is encephalitis, which is caused by neurotropic flaviviruses such as West Nile virus (WNV), Japanese encephalitis virus (JEV), and Tick-borne encephalitis virus (TBEV). LÄS MER

4. 3. Wind power wake modelling : Development and application of an actuator disc method for industrial utilization

   Författare :Nikolaos Simisiroglou; Stefan Ivanell; Thorsten Lutz; Uppsala universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Wind power; Offshore wind farm; Wakes; Actuator Disc Method ACD ; Computational Fluid Dynamics CFD ; Reynolds Average Navier–Stokes RANS ; WindSim; PHOENICS;

   Sammanfattning : As a wind turbine extracts energy from the wind it creates a region downstream where the wind velocity is decreased and the urbulence intensity is increased, this region is commonly called the wake region. Today’s wind farms include a large number of wind turbines position in tight layouts. LÄS MER

5. 4. Regulatory roles of sRNAs in pathogenesis of Vibrio cholerae

   Författare :Dharmesh Sabharwal; Sun Nyunt Wai; Bernt Eric Uhlin; Jörgen Johansson; Cynthia Sharma; Umeå universitet; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Vibrio cholerae; sRNA; Biofilm; OmpT; RbmC; Vrp; VafA; mikrobiologi; Microbiology;

   Sammanfattning : The Gram-negative pathogen Vibrio cholerae uses variety of regulatory molecules to modulate expression of virulence factors. One important regulatory element of microorganisms is small non-coding RNAs (sRNAs), which control various cell functions such as expression of cell membrane proteins, mRNA decay and riboswitches. LÄS MER

7. 5. A Ventilation Strategy Based on Confluent Jets : An Experimental and Numerical Study

   Författare :Setareh Janbakhsh; Bahram Moshfegh; Alexander Zhivov; Linköpings universitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Multiple interacting jets; round jets; confluent jets; wall jet; ventilation strategy; air distribution system; air supply device; ventilation performance; thermal comfort; energy-saving potential; measurement; numerical predictions; RANS turbulence models; renormalization group RNG k– ε ; realizable Re k– ε ; and shear stress transport SST k– ω ;

   Sammanfattning : This study presents air distribution systems that are based on confluent jets; this system can be of interest for the establishment of indoor environments, to fulfill the goals of indoor climate and energy-efficient usage. The main objective of this study is to provide deeper understanding of the flow field development of a supply device that is designed based on wall confluent jets and to investigate the ventilation performance by experimental and numerical methods. LÄS MER