Sökning: "Transition"

Visar resultat 11 - 15 av 3817 avhandlingar innehållade ordet Transition.

1. 11. Stability analysis of channel flow laden with small particles

   Författare :Joy Klinkenberg; Luca Brandt; Cristian Marchioli; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Transition; modal analysis; non-modal analysis; Direct Numerical Simulations; multi-phase flow; heavy particles; light particles; particle-laden;

   Sammanfattning : This thesis deals with the stability of particle laden flows. Both modal and non-modal linear analyses have been performed on two-way coupled particleladen flows, where particles are considered spherical, solid and either heavy or light. When heavy particles are considered, only Stokes drag is used as interaction term. LÄS MER

3. 12. New Reactions with Allyl- and Allenylboron Reagents : Transition-Metal-Catalyzed and Transition-Metal-Free Carbon-Carbon Bond Formation Processes

   Författare :Dong Wang; Kálmán J. Szabó; Jianbo Wang; Stockholms universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; carbon-carbon bond formation; cross-coupling; organoboron compound; allylboron reagent; allylation; transition metal; metal carbene; allenylboron reagent; transition metal free; diazo compound; tosylhydrazone; quinone; organisk kemi; Organic Chemistry;

   Sammanfattning : Organoboron compounds have been widely used in carbon-carbon bond formation reactions in organic synthesis and catalysis. This thesis is focused on cross-coupling reactions of allyl-, allenylboronic acids and their ester derivatives via transition metal catalysis or transition-metal-free processes. LÄS MER

4. 13. Transition Metal Nitrides : Alloy Design and Surface Transport Properties using Ab-initio and Classical Computational Methods

   Författare :Davide G. Sangiovanni; Valeriu Chirita; Lars Hultman; Paul Mayrhofer; Linköpings universitet; []
   Nyckelord :;

   Sammanfattning : Enhanced toughness in brittle ceramic materials, such as transition metal nitrides (TMN), is achieved by optimizing the occupancy of shear-sensitive metallic electronic-states. This is the major result of my theoretical research, aimed to solve an inherent long-standing problem for hard ceramic protective coatings: brittleness. LÄS MER

5. 14. F�r�ndring och kontinuitet : Al-Ghaz�l�s politiska omsv�ngning

   Författare :Mohammad Fazlhashemi; Umeå universitet; []
   Nyckelord :HUMANIORA; HUMANITIES; The c Abbâsîds; Central Asia; Mirror for princes kings Nasihat al-Mulûk; Qâbûs Nâma; Siyâsat Nâma ; al-Ghazâlî 1058-1111 ; genre; caliph khalîfa; khilafa ; Nizam al-Mulk 1018-1092 ; justice Cadi; cidâla ; the Saljûqs; Sûfîsm stifî; tasawwuf ; sultân;

   Sammanfattning : The present dissertation ia an analysis in the history of ideas of the 12th-century Persian-Islamic thinker Ab� Hamid Muhammad al-Ghaz�l�'s political ideas and his political reversal, ie. his abandonment of a religiously-influenced political theory in favour of a Persian-influenced political theory. LÄS MER

7. 15. Reportaget som kom av sig : en analys av reportaget som textform utifrån produktionsperspektivet och sändarrollen med betoning på reporterns personliga tonfall : en undersökning av reportaget i några landsortstidningar 1960-1985

   Författare :Lars J. Hultén; Stockholms universitet; []
   Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES;

   Sammanfattning : Reportage is a generally accepted, yet poorly defined genre in Swedish newspaperterminology. It is usually associated with journalistic texts that are produced outside theroutines of daily news coverage; reportage features also have a more personal tone thanstandard news texts in that the reporter imparts his or her personal observations andperceptions of the scene in question. LÄS MER