Sökning: "Hål"

Visar resultat 6 - 10 av 353 uppsatser innehållade ordet Hål.

1. 6. Superconducting gates for InP HEMTs

   Master-uppsats, KTH/Tillämpad fysik

   Författare :Sebastian Alveteg; [2023]
   Nyckelord :Cryogenic electronics; HEMT; Superconductors; Applied Physics; Kryogenisk elektronik; HEMT; Supraledare; Tillämpad fysik;

   Sammanfattning : The thesis examines the prospects of using the superconductor NbN as the gatemetal for an InP HEMT. A HEMT or High Electron Mobility Transistor is aheterostructure transistor engineered to reach very high electron mobility. InPHEMTs are used as cryogenic Low Noise Amplifiers (LNAs), which have increasedin demand as quantum computing is scaling up. LÄS MER

3. 7. Design of cooling-air permeable coil support

   Master-uppsats, KTH/Hållfasthetslära

   Författare :Rozbeh Ghassemi; [2023]
   Nyckelord :Topology optimization; FEM-simulations; CFD-simulations; Material selection; Topologioptimering; FEM-simuleringar; CFD-simuleringar; Materialval;

   Sammanfattning : Coil supports are integral load-bearing components employed in generators andmotors. They serve the purpose of preventing excessive deformation and maintaininga stable position of the coils responsible for generating power and magnetic fieldswhen rotating. LÄS MER

4. 8. Fuktmätning i betonggolv - Hur gör man det rätt?

   Uppsats för yrkesexamina på avancerad nivå, Lunds universitet/Avdelningen för Byggnadsmaterial

   Författare :Linus Samberg; [2023]
   Nyckelord :Fuktmätning; betong; golvbeläggning; fukt.; Technology and Engineering;

   Sammanfattning : För att säkerställa att golvbeläggningar inte skadas efter att de monterats på ett betonggolv är det viktigt att veta betonggolvets fukttillstånd. För att mäta fukttillståndet i betong har Rådet för byggkompetens tillsammans med Byggföretagen givit ut en fuktmätningsmanual. LÄS MER

5. 9. Cosmological Horizons and the Unruh Effect

   L3-uppsats, Uppsala universitet/Teoretisk fysik

   Författare :Niklas Engelhardt Önne; [2023]
   Nyckelord :Unruh effect; quantum scalar fields; Bogoliubov transformations; accelerated observers; Minkowski spacetime; cosmological horizons; Rindler observers; special relativity; QFT; Unruh-effekten; skalära kvantfält; Bogoliubov-transformationer; accelererande referenssystem; Minkowski rumtid; kosmologiska horisonter; Rindlerobservatörer; speciell relativitetsteori; QFT;

   Sammanfattning : The black hole information paradox, which states that the evaporation of black holes due to Hawking radiation results in a violation of the conservation of quantum information, is arguably one of the most fundamental problems in all of modern physics. Through the equivalence principle, the essence of the problem can be understood and studied in the context of much simpler flat spacetime (described by the theory of special relativity); in this context the Hawking radiation takes the form of the so-called Unruh effect, a thermal effect in the vacuum of a Minkowski quantum field theory that can be measured by accelerated observers. LÄS MER

7. 10. Improvement of a Vermicompost Sieving Machine for Smallholder Farmers in the Philippines : A study conducted in science city of Muñoz, Philippines

   Kandidat-uppsats, KTH/Skolan för industriell teknik och management (ITM)

   Författare :Anokina Marcos Yousif; Felipe Vidal; Ioana Cosaceanu; [2023]
   Nyckelord :Philippines; Philippine Carabao Center; Sieve Machine; Smallholder farmer; Vermicompost; Filippinerna; maskkompostering; Philippine Carabao Center; siktmaskin; småskaliga bönder;

   Sammanfattning : The Philippines has a primarily agricultural economy, with many rural residents relying on farming for their livelihoods. The Philippine Carabao Center (PCC) was established in 1992 to support smallholder farmers in the country through research and technology development related to carabaos. LÄS MER