Search for dissertations about: "Transition"

Showing result 6 - 10 of 3572 swedish dissertations containing the word Transition.

  2. 6. Transition Metal Hydrides : Biomimetic Studies and Catalytic Applications

    Author : Jesper Ekström; Hans Adolfsson; Jonathan Williams; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; transition metals; catalysis; bioinorganic chemistry; hydrides; Organic chemistry; Organisk kemi; Organic Chemistry; organisk kemi;

    Abstract : In this thesis, studies of the nature of different transition metal-hydride complexes are described. The first part deals with the enantioswitchable behaviour of rhodium complexes derived from amino acids, applied in asymmetric transfer hydrogenation of ketones. READ MORE

  4. 7. Spectral-element simulations of turbulent wall-bounded flows including transition and separation

    Author : Johan Malm; Dan Henningson; Philipp Schlatter; Suad Jakirlic; KTH; []
    Keywords : spectral-element method; direct numerical simulation DNS ; large-eddy simulation LES ; turbulence; transition; over-integration; three-dimensional separation; massively parallel simulations; proper orthogonal decomposition POD ; Koopman modes; vorticity stretching; coherence; SRA - E-vetenskap SeRC ; SRA - E-Science SeRC ;

    Abstract : The spectral-element method (SEM) is used to study wall-bounded turbulent flowsin moderately complex geometries. The first part of the thesis is devoted to simulations of canonical flow cases, such as temporal K-type transitionand turbulent channel flow, to investigate general resolution requirements and computational efficiency of the numerical code nek5000. READ MORE

  5. 8. Edge states and transition to turbulence in boundary layers

    Author : Taras Khapko; Dan Henningson; Philipp Schlatter; Yohann Duguet; Rich Kerswell; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; boundary layer; transition to turbulence; direct numerical simulation; edge state; free-stream turbulence; bypass transition; probabilistic cellular automaton; turbulence at the onset; laminar–turbulent coexistence; laminarisation; Engineering Mechanics; Teknisk mekanik;

    Abstract : The focus of this thesis is the numerical study of subcritical transition to turbulence in boundary-layer flows. For the most part, boundary layers with uniform suction are considered. Constant homogeneous suction counteracts the spatial growth of the boundary layer, rendering the flow parallel. READ MORE

  6. 9. Elderly South Africans' in transition : the daily life circumstances, beliefs concerning health and illness and the influences on caring and family structure

    Author : Doris Bohman; Karolinska Institutet; Karolinska Institutet; []
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Activities of daily living; Aged; Changing society; Elderly; Ethnography; Family; Health and illness beliefs; Interpretive phenomenology; Keeping normality; Modernization; Reciprocity; South Africa; Tradition; Transition; Activities of daily living; changing society; Elderly; Ethnography; Keeping normality; South Africa; health and illness beliefs; interpretive phenomenology; transition; aged; family; modernization; reciprocity; tradition;

    Abstract : The overall aim of this thesis was to shed light on different aspects of elderly South Africans experiences in a transitional period in order to reach culturally contextual knowledge within gerontological care. The research objectives were to: identify and describe daily life and related concerns and interests as expressed by a group of elderly (I), illuminate how a group of elderly South Africans experience being old in a transitional period (II), study how a group of aged South Africans and their family members describe their intergenerational relations in a transitional period i. READ MORE

  7. 10. Anorectal malformations – surgical aspects and transition

    Author : Louise Tofft; Lund Pediatrik; []
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Anorectal malformations ARM ; wound dehiscence; PSARP; transition; focus groups; fistula; colostogram; voiding cystourethrogram; cystoscopy; endoscopy; postoperative scarring; scar treatment; anorectal malformations ARM ; posterior sagittal anorectoplasty PSARP ; wound dehiscence; transition; focus groups; fistula; colostogram; voiding cystourethrogram; cystoscopy; endoscopy; postoperative scarring; scar treatment;

    Abstract : Background: Anorectal malformations (ARM) occur in 1/5000 live births (1.2–1.6:1 male:female). Associated malformations are common, influencing, together with ARM-subtype complexity, long-term outcome, follow-up and need of transitional care. READ MORE