Sökning: "macroscopic changes"

Visar resultat 1 - 5 av 91 avhandlingar innehållade orden macroscopic changes.

1. 1. From Macroscopic to Microscopic Dynamics of Superconducting Cavities

   Författare :Anirban Bhattacharyya; Vitaliy Goryashko; Volker Ziemann; Roger Ruber; Jean Delayen; Uppsala universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; superconducting cavity; superconductivity; self-excited loop; Ginzburg-landau; vortex; optimization; quality factor; microwave; Fysik med inriktning mot elementarpartikelfysik; Physics with specialization in Elementary Particle Physics;

   Sammanfattning : Superconducting (SC) radio frequency (RF) cavities are at the heart of many large-scale particle accelerators such as the European Spallation Source (ESS), the X-ray Free Electron Laser (XFEL), the Linac Coherent Light Source (LCLS)-II and the proposed International Linear Collider (ILC). The SC cavities are essentially resonant structures with very high intrinsic quality factors (Q0) of the order of 1010. LÄS MER

3. 2. Cholesterolinduced changes in macro- and microvessels in rabbits : effects of antioxidants

   Författare :Anna Freyschuss; Karolinska Institutet; Karolinska Institutet; []
   Nyckelord :Cholesterol; rabbits; oxidative; antioxidants; vessels; microcirculation;

   Sammanfattning : A hyperlipidemic state induced by cholesterol feeding results in changes in both the structure and function of macro- and microvessels in rabbits. It has been proposed that oxidative modification of lipoproteins might be an important pathophysiological mechanism explaining these effects of hyperlipidemia. LÄS MER

4. 3. Periarticular changes in association with osteoarthritis in the hip, knee or shoulder

   Författare :Mustafa Ibrahim; Göteborgs universitet; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Osteoarthritis; Tendinopathy; Bone mineral density;

   Sammanfattning : The aim of this thesis was to evaluate the presence of degenerative changes in the periarticular tendons in association with osteoarthritis (OA) in the hip, knee or shoulder. Moreover, changes in bone mineral density (BMD) in the hip, spine and calcanei were investigated after total hip arthroplasty (THA). LÄS MER

5. 4. Macroscopic Volume and Free Volume of Polymer Blends and Pressure-densified Polymers

   Författare :Marcus Schmidt; Chalmers tekniska högskola; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; free-volume theories; refractive index; Lorentz-Lorenz equation; loss tangent; Avrami equation; freezing fractions; copolymers; polymer blends; pressure dilatometry; Tait equation of state; free-volume distributions; pressure-densified polymers; entropy of melting; dynamic-mechanical analysis; positronium; positron annihilation; free volume; cavity size; polymers; bulk modulus; PVT; phase separation; compressibility; thermal expansivity;

   Sammanfattning : The macroscopic volume V as a function of pressure P and temperature T is obtained from PVT measurements. PVT data is sensitive to the state of polymers and changes therein. Moreover, PVT data gives access to the free-volume fraction. LÄS MER

7. 5. Field Measurements and Predictions of River Flow, Sediment Transport and Morphological Changes

   Författare :Qiancheng Xie; Staffan Lundström; James Yang; J. Gunnar I. Hellström; Anders G. Andersson; Nils Ruther; Luleå tekniska universitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Alluvial river; Sediment transport; Morphological change; Meandering; Confluence-diffluence; River training; Field measurements; Numerical simulations; Physical model tests; Machine learning; Alluvial flod; Sedimenttransport; Morfologisk förändring; Slingrande; Konfluens-diffluens; Flodträning; Fältmätningar; Numeriska simuleringar; Fysiska modellprov; Maskininlärning; Strömningslära; Fluid Mechanics;

   Sammanfattning : In an alluvial lowland river, sediment is transported in the form of suspended and bed loads. The fluvial process is the macroscopic view and long-term consequence of sediment movement. LÄS MER