Sökning: "eböcker"

Visar resultat 1 - 5 av 56111 avhandlingar innehållade ordet eböcker.

  1. 1. Horizontal Slot Waveguides for Silicon Photonics Back-End Integration

    Detta är en avhandling från Stockholm : KTH Royal Institute of Technology

    Författare :Maziar A. M. Naiini; Mikael Östling; Jörge Schulze; [2014]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; silicon photonics; slot waveguides; grating couplers; CMOS tech- nology; high-k; ALD; germanium photodetectors; graphene photodetectors; pho- tonic integrated circuits;

    Sammanfattning : This thesis presents the development of integrated silicon photonic devices. These devices are compatible with the present and near future CMOS technology. High-khorizontal grating couplers and waveguides are proposed. LÄS MER

  2. 2. Supporting Learning and Teaching of Chemistry in the Undergraduate Classroom

    Detta är en avhandling från Stockholm : Department of Mathematics and Science Education, Stockholm University

    Författare :Ilana A. Manneh; Karim Hamza; Carl-Johan Rundgren; Lars Eriksson; Ingo Eilks; [2019]
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; undergraduate chemistry education; learning and teaching processes; didactic triangle; chemical bonding; tutor-student interaction; practical epistemology analysis; continuity; progression; purposes; naturvetenskapsämnenas didaktik; Science Education;

    Sammanfattning : There is agreement in research about the need to find better ways of teaching chemistry to enhance students’ understanding. This thesis aims to contribute to the understanding of how we better support teaching and learning of undergraduate chemistry to make it meaningful and intelligible for students from the outset. LÄS MER

  3. 3. Magnetic Refrigeration for Near Room-Temperature Applications

    Detta är en avhandling från KTH Royal Institute of Technology

    Författare :Behzad A Monfared; Björn Palm; Joachim Claesson; Andrew Rowe; [2018]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Magnetic Refrigeration; Magnetic; Cooling; Magnetocaloric; Life Cycle Assessment; Modeling; Simulation; Optimization; Regeneration; Active Magnetic Regeneration; Bonded Regenerator; Heat Switch; Thermal Diode; Peltier; Solid-State; Prototype; Magnetisk Kylteknik; Magnetisk; Kylning; Magnetokalorisk; Livscykela-nalys; Modellering; Simulering; Optimering; Regenerering; Aktiv Mag-netisk Regenerering; Bunden Regenerator; Värmebrytare; Termodiod; Peltier; Solid-State; Prototyp; Energiteknik; Energy Technology;

    Sammanfattning : Refrigeration plays a crucial role in many different sectors and consumes about 17% of the electricity produced globally. This significant energy consumption implies large share of refrigeration in primary energy consumption and other environmental impacts. LÄS MER

  4. 4. Cardiovascular assessment in middle-aged male long distance runners

    Detta är en avhandling från Stockholm : Karolinska Institutet, Dept of Medicine, Solna

    Författare :Philip Aagaard; Karolinska Institutet.; Karolinska Institutet.; [2012]
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; early repolarisation;

    Sammanfattning : Endurance events such as long distance running races are increasing in popularity and convey multiple health benefits. However, such exercise forms also represent a major challenge to human cardiovascular physiology and are associated with a momentarily increased risk for adverse cardiac events. LÄS MER

  5. 5. Reticulate Evolution in Diphasiastrum (Lycopodiaceae)

    Detta är en avhandling från Uppsala : Acta Universitatis Upsaliensis

    Författare :Sunniva Margrethe Due Aagaard; Niklas Wikström; Tom A. Ranker; [2009]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; admixture analysis; Bayesian clustering; Diphasiastrum; Feulgen DNA image densitometry; homoploid hybridization; Lycopodiaceae; phylogenetic analysis; polyploidy; reticulate evolution; NATURAL SCIENCES Biology Organism biology Systematics and phylogenetics; NATURVETENSKAP Biologi Organismbiologi Systematik och fylogeni; systematisk botanik; Systematic Botany;

    Sammanfattning : In this thesis relationships and the occurrence of reticulate evolutionary events in the club moss genus Diphasiastrum are investigated. Diphasiastrum is initially established as a monophyletic group within Lycopodiaceae using non recombinant chloroplast sequence data. LÄS MER