Sökning: "Defect"
Visar resultat 1 - 5 av 797 avhandlingar innehållade ordet Defect.
1. On Defect Generation and the Appearance of Injection-Moulded Polymers
Sammanfattning : This thesis addresses the generation of some important manufacturing defects associated with intrinsic limitations of the injection moulding process. These include bulk-surface structural discontinuities, particularly air traps and welds, bulk-surface compositional inhomogeneities and gloss and colour variations. LÄS MER
2. In-situ monitoring of laser powder bed fusion applied to defect detection
Sammanfattning : Additive manufacturing technologies, particularly laser powder bed fusion (LPBF), have received much attention recently due to their numerous advantages over conventional manufacturing methods. However, the use of LPBF is still quite restricted, mainly due to two factors: its typically low productivity, which makes the technology less competitive in applications with moderate to high production volumes, and its limited reliability, particularly relevant for applications where high performance is required from the materials. LÄS MER
3. Exact Results in Supersymmetric Field Theories : A dissertation on the defect and deformed
Sammanfattning : Quantum field theories (QFTs) are the most precise descriptions of the physical reality that humanity has found. Yet exact predictions are often missing as most computations are notoriously difficult to carry out. One generally resorts to perturbation theory which immediately limits the regime of validity. LÄS MER
4. Young children with atrial septal defect
Sammanfattning : Background: Secundum atrial septal defect (ASD II), situated within the fossa ovalis, is the third most common congenital heart defect and even more common among preterm children. Spontaneous closure usually occurs during the first year of life. Most children with an ASD II remain asymptomatic during early childhood. LÄS MER
5. Surgical treatment of atrioventricular septal defect
Sammanfattning : .... LÄS MER