Sökning: "Intermediate"

Visar resultat 26 - 30 av 1560 avhandlingar innehållade ordet Intermediate.

1. 26. Aerodynamics of an Aeroengine Intermediate Compressor Duct: Effects from an Integrated Bleed System

   Författare :Elias Siggeirsson; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Intermediate Compressor Duct; S-shaped duct; DDES; Hybrid RANS LES; Dual-time-stepping; Bleed system; rotor off-take; SBES; CFD; Turbomachinery;

   Sammanfattning : With the successful development of high-bypass-ratio turbofan engines, major aerodynamic components have been optimized and continuous efficiency improvements are getting harder to maintain. Therefore, to meet the requirements of lower emission of greenhouse gases, auxiliary modules such as intermediate ducts are receiving increasing interest. LÄS MER

3. 27. Aerodynamic Design and Optimization of Intermediate Ducts for High By-pass Ratio Jet Engines

   Författare :Fredrik Wallin; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Intermediate transition ducts; vortex generators; S-shaped ducts; response surface methodology; source term model; optimization;

   Sammanfattning : Demands on improved efficiency and reduced noise levels cause a strive toward high by-pass ratio commercial aero engines. This results in multi-spool aero engines with small high-pressure ratio cores and large fans. The low-pressure system has a lower rotational speed and a larger radius than the high-pressure core system. LÄS MER

4. 28. Filament assembly and structural studies of intermediate filament like protein, FilP, in Streptomyces coelicolor

   Författare :Ala Javadi; Linda Sandblad; Martin Thanbichler; Umeå universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Cytoskeleton; Intermediate filament-like; FilP; Streptomyces coelicolor; filament assembly; cryoelectron tomography; single particle analysis; crystallography; cellulose affinity;

   Sammanfattning : The cytoskeleton, known as intracellular connected filaments, has a prominent role in cellular behavior, motility, and stability. The following three major types of polymers have been characterized as cytoskeleton in eukaryotes: microtubules that are 25 nm in diameter, actin filaments that are 7 nm in diameter, and intermediate filaments (IF) that are 10 nm in diameter. LÄS MER

5. 29. A Large-Scale Facility for Investigation of Intermediate Turbine Ducts: Design, Implementation and Initial Tests

   Författare :Lars-Uno Axelsson; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; diffuser; S-shaped duct; wind-tunnel design; gas turbine; turbofan; annular duct; Intermediate turbine duct;

   Sammanfattning : Intermediate turbine ducts are used in modern multi-spool jet engines for guiding the flow from the high-pressure turbine to the low-pressure turbine. The demand for lighter, more efficient and more environmentally friendly aircraft engines requires the new jet engines to have higher by-pass ratios. LÄS MER

7. 30. Psychosocial consequences of high and intermediate imperforate anus

   Författare :Margret Nisell; Karolinska Institutet; Karolinska Institutet; Karolinska Institutet Department of Woman and Child Health Child and Adolescent Psychiatric Unit; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; imperforate anus; psychosocial; children; parents; fecal incontinence; multiple informant assessment; Imperforate anus; psychosocial; children; parents; fecal incontinence; multiple informant assessment.;

   Sammanfattning : Imperforate anus including lack of a normal anorectum is an uncommon malformation. The parents of children born with high and intermediate imperforate anus have to take a big responsibility for the follow-up treatment. It has been revealed that children with imperforate anus have psychosocial problems, though knowledge of this is limited. LÄS MER