Sökning: "Ulf Olsson"

Visar resultat 41 - 45 av 53 avhandlingar innehållade orden Ulf Olsson.

  1. 41. Polyethylene – metal oxide particle nanocomposites for future HVDC cable insulation : From interface tailoring to designed performance

    Författare :Dongming Liu; Ulf Gedde; Mikael Hedenqvist; Richard Olsson; Linda Schadler; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; HVDC; electrical insulation; core-shell nanoparticles; surface modification; silane chemistry; nanocomposites; polyethylene; adsorption; long-term stability; interface; particle dispersion; cavitation; conductivity; HVDC; elektrisk isolation; ytmodifiering; silankemi; nanokompositer; polyeten; adsorption; långtidsstabilitet; ytskikt; partikeldispergering; kavitation; ledningsförmåga; Fiber- och polymervetenskap; Fibre and Polymer Science;

    Sammanfattning : Low-density polyethylene (LDPE) nanocomposites containing metal oxide nanoparticles are considered as promising candidates for insulating materials in future high-voltage direct-current (HVDC) cables. The significant improvement in dielectric properties compared with unfilled polymer is attributed to the large and active interface between the nanoparticles and the polymer. LÄS MER

  3. 42. Att röra en värld : en queerteoretisk analys av erotiska trianglar i sex verk av August Strindberg

    Författare :Ann-Sofie Lönngren; Torsten Pettersson; Björn Sundberg; Ulf Olsson; Uppsala universitet; []
    Nyckelord :HUMANIORA; HUMANITIES; Literature; August Strindberg; Queer studies; Erotic triangles; Gender studies; Performativity; Homosocial desire; Triangular desire; History of sexuality; Hermeneutics; Litteraturvetenskap; Literature; Litteraturvetenskap; Literature; Litteraturvetenskap;

    Sammanfattning : The subject of this dissertation is a queertheoretical analysis of erotic triangles with two men and one woman, in six texts by August Strindberg (1849–1912). The material consists of the novel A Madman’s Defence (1887–88) and the plays Creditors (1888), Playing with Fire (1892), Crime and Crime (1899), Dance of Death I (1901) and To Damascus I–III (1898–1901). LÄS MER

  4. 43. Synthesis, Characterization, and Evaluation of Ag-based Electrical Contact Materials

    Författare :Fang Mao; Ulf Jansson; Mikael Olsson; Uppsala universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; electrical contact; bulk; coating; Ag-based alloys; Ag-based delafossite; AgI; graphene; graphene oxide; combinatorial material science; dc magnetron sputtering; friction; wear; hardness; contact resistance;

    Sammanfattning : Ag is a widely used electrical contact material due to its excellent electrical properties. The problems with Ag are that it is soft and has poor tribological properties (high friction and wear in Ag/Ag sliding contacts). LÄS MER

  5. 44. Polyethylene/metal oxide nanocomposites for electrical insulation in future HVDC-cables : probing properties from nano to macro

    Författare :Love Pallon; Ulf Gedde; Mikael Hedenqvist; Richard Olsson; Alun Vaughan; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Nanocomposites; polyethylene; particle dispersion; high voltage direct current cables; HVDC; HVDC insulation; MgO; intermodulation electrostatic force microscopy; ptychography; electrical tree; Nanokompositer; polyeten; HVDC; HVDC-kabel; HVDC-isolering; MgO; elektrisk isolation; partikeldispergering; elektriska träd; Fiber- och polymervetenskap; Fibre and Polymer Science;

    Sammanfattning : Nanocomposites of polyethylene and metal oxide nanoparticles have shown to be a feasible approachto the next generation of insulation in high voltage direct current cables. In order to reach an operationvoltage of 1 MV new insulation materials with reduced conductivity and increased breakdown strengthas compared to modern low-density polyethylene (LDPE) is needed. LÄS MER

  7. 45. Myter om gymnasieeleven : En diskursteoretisk studie av dominerande subjektspositioner i politiska texter 1990-2009

    Författare :Maria Terning; Ulf Olsson; Katarina Sipos; Sverker Lindblad; Stockholms universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; student subject; discourse; upper secondary education; post structuralism; deconstruktion; subject position; categorization; political subjectivity; myth; social fantasy; Sweden; elev; diskurs; gymnasieskolan; poststrukturalism; dekonstruktion; subjektposition; kategorisering; politisk subjektivitet; myt; social fantasi; Sverige; pedagogik; Education;

    Sammanfattning : For whom the educational system should be available, what it should contain and what it should lead to, are all questions but with different answers. In this dissertation, these answers are understood as products of relations including a power dimension. LÄS MER