Sökning: "diameter effect"

Visar resultat 1 - 5 av 280 avhandlingar innehållade orden diameter effect.

  1. 1. Air-pocket transport in conjunction with bottom-outlet conduits for dams

    Författare :Ting Liu; Anders Wörman; James Yang; Staffan Lundström; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Air-water two-phase flow; critical velocity; diameter effect; roughness; VOF model; bottom outlet; experiment;

    Sammanfattning : Undesired air entrainment in bottom outlet conduits of dams may cause pressure transients, leading to conduit vibrations, blowback, discharge pulsation and even cavitation, and jeopardize the operational safety. Due to design limitations or construction costs, it is impossible to create an air free environment in a pressurized pipe. LÄS MER

  3. 2. Electron Transport in Nanowire Quantum Devices

    Författare :Henrik Nilsson; Fasta tillståndets fysik; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Superconductivity; Spin-orbit coupling; the Kondo effect; the Zeeman effect; Quantum dots; Nanowire memories; Nanowire transistors; InSb; InAs; Nanowires; Electron transport; Andreev reflections; Nanowire RF-SET; Noise in nanowires;

    Sammanfattning : This thesis focuses on electron transport in semiconductor InAs/InP and InSb nanowire quantum devices. However, first the temperature dependence of classical charge transport in InSb nanowire field-effect transistors, FETs, is characterized, using InAs nanowire FETs as a reference. LÄS MER

  4. 3. Vertical III-V Nanowire Tunnel Field-Effect Transistor

    Författare :Elvedin Memisevic; Nanoelektronik; []
    Nyckelord :Transistor; TFET; Steep slope; Nanowire; III-V materials; HSQ; Vertical; InAs; GaSb; MOSFET;

    Sammanfattning : In this thesis fabrication and optimization of vertical III-V Tunneling Field-Effect transistors was explored. Usage of vertical nanowires, allows for combination of materials with large lattice mismatch in the same nanowire structure. LÄS MER

  5. 4. Effect of Surface Nanotopography on Blood-Biomaterial Interactions

    Författare :Natalia Ferraz; Marjam Ott; Jaan Hong; Jan Carlsson; Tom Eirik Mollnes; Uppsala universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; nanoporous alumina; nanotopography; biomaterial; platelets; complement system; macrophages; whole blood; inflammatory response; Chemistry; Kemi; Immunobiology; Immunbiologi; Immunologi; Immunology; Materialvetenskap; Materials Science;

    Sammanfattning : Biologically inspired materials are being developed with the aim of improving the integration of medical implants and minimizing non-desirable host reactions. A promising strategy is the design of topographically patterned surfaces that resemble those found in the extracellular environment. LÄS MER

  7. 5. Flow dynamics in corrugated pipes: Effect on particle agglomeration

    Författare :Ghulam Mustafa Majal; Mihai Mihaescu; Mats Åbom; Lisa Prahl Wittberg; Mikael Karlsson; José Galindo; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Engineering Mechanics; Teknisk mekanik;

    Sammanfattning : In recent times, the deleterious impact of particulate emissions from road vehicles on the well-being of humans has garnered a significant amount ofattention. Regulatory bodies have enacted legislation in order to counter act particulate emissions. LÄS MER