Sökning: "TH"

Visar resultat 16 - 20 av 390 avhandlingar innehållade ordet TH.

  1. 16. Th Dynamics of Star Cluster Formation

    Författare :Juan Pablo Farias Osses; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Star Formation; Star Clusters; Stellar Dynamics;

    Sammanfattning : A major question in astrophysics is how star clusters form. These objects are important, since they are the birth sites of most stars, perhaps including our own Sun. LÄS MER

  3. 17. Flickan i medicinen : ungdom, kön och sjuklighet 1870-1930

    Författare :Anna-Karin Frih; Christina Carlsson Wetterberg; Ann-Sofie Ohlander; Kari Melby; Örebro universitet; []
    Nyckelord :HUMANIORA; HUMANITIES; SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Girls; Boys; Gender; Youth; Illness; Chlorosis; History of Medicine; 19 th Century; 20 th Century; Popular Medicine; Scientific Medicine; Health Studies; flickor; pojkar; ungdom; sjuklighet; genus; medicin; 1800-tal; 1900-tal; genus; läkare; History; Historia; History of medicine; Medicinens historia; Gender studies; Genus; Historia; History;

    Sammanfattning : The main purpose of this thesis is to study and analyze how concepts of childhood and adolescence were constructed in scientific medicine during the period 1870 to 1930. The focus in the first part of the thesis is to study the sick girl as a stereotype in 1870–1900. LÄS MER

  4. 18. 40Ar/39Ar, AFT and (U-Th)/He thermochronologic implications for the low-temperature geological evolution in SE Sweden

    Författare :Pia Söderlund; Berggrundsgeologi; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; 40Ar-39Ar; Fennoscandian Shield; U-Th He; AFT; geochronology; thermochronology; cooling; uplift;

    Sammanfattning : The Oskarshamn and Forsmark areas in the Fennoscandian Shield, SE Sweden, have been chosen as potential sites for hosting highly radioactive nuclear waste. To evaluate their respective suitability, the geological history of the bedrock in these two areas has been investigated. This study has focused on the thermal evolution, from c. 500 °C to c. LÄS MER

  5. 19. Effective Spatial Mapping for Coupled Code Analysis of Thermal–Hydraulics/Neutron–Kinetics of Boiling Water Reactors

    Författare :Joanna Peltonen; Weimin Ma; Maria Avramova; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Boiling Water Reactor; RELAP5; TRACE; PARCS; Coupled TH NK analysis; Spatial Mapping; Turbine Trip; Feedwater Transient; Control Rod Drop; Reactor Stability; Hierarchical Clustering; kokvattenreaktor; reaktoranalys; RELAP5; TRACE; PARCS; TH NK analys; turbin tripp; matarvatten transient; fallande styrstav; reaktor stabilitet; hierarkisk klustringsmetodik; SRA - Energy; SRA - Energi;

    Sammanfattning : Analyses of nuclear reactor safety have increasingly required coupling of full three dimensional neutron kinetics (NK) core models with system transient thermal–hydraulics (TH) codes.  In order to produce results within a reasonable computing time, the coupled codes use two different spatial description of the reactor core. LÄS MER

  7. 20. The genus Xanthoria (Fr.) Th.Fr. in North America

    Författare :Louise Lindblom; Biologiska institutionen; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; morphology; taxonomy; Systematic botany; HPTLC; secondary chemistry; Xanthoria; anatomy; Teloschistaceae; lichenized Ascomycetes; phytogeography; chemotaxonomy. Physiology of nonvascular plants; Systematisk botanik; taxonomi; morfologi; kemotaxonomi. Växters fysiologi inte kärlväxter .;

    Sammanfattning : The lichenized ascomycete genus Xanthoria (Fr.) Th.Fr. (Teloschistaceae) in continental United States and Canada is revised. LÄS MER