- About
-
The Global ETD Search service is a free service for researchers
to find electronic theses and dissertations. This service is
provided by the
Networked Digital Library of Theses and Dissertations.
Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
Search results
Showing 51 to 60 of 8656 (0.092 seconds)Spelling suggestions: "subject:"atransition."" "subject:"2transition.""
| 51 |
Some chemistry of triosmium clusters with P- and N- ligandsIrele, Patricia Taiwo January 1987 (has links)
No description available.
|
| 52 |
Phenomenology and simulations of active fluidsTjhung, Elsen January 2013 (has links)
Active fluids are an interesting new class of non-equilibrium systems in physics. In such fluids, the system is forced out of equilibrium by the individual active particles - in contrast to driven systems where the system is forced out of equilibrium by some external forces. Some biological examples of active fluids are bacterial suspensions and actomyosin solutions inside eukaryotic cells. In the case of bacterial suspensions, the fluid is stirred internally by the swimming bacteria and as a consequence of this, active fluids can have some interesting physics of their own such as hydrodynamic instabilities and spontaneous symmetry breaking. Here, in particular, we study how such instabilities may arise and how they may lead to a non-equilibrium steady state. We also study numerically a droplet of active matter as a simple representation of cell extract comprising actomyosin solution bounded by a cell membrane. It is widely believed that cell motility is driven only by actin polymerization pushing against the cell membrane. However, we show that even in the absence of actin polymerization, actin-myosin contraction alone can also generate a unidirectional motion. This happens due to the spontaneous breakdown of a discrete symmetry at large enough activity (i.e. actomyosin contraction). This non-equilibrium phase transition from stationary to motile state is somewhat similar to the second order phase transition in equilibrium thermodynamics. Finally, we studied the behaviour of an active droplet on a two-dimensional surface to mimic cell crawling. Whereas cell migration in 3D environment maybe driven mainly by actin-myosin contraction (described above), cell crawling on a 2D surface is driven mainly by actin polymerisation. Here we find that localised actin polymerisation can cause protrusion in the cell membrane which is qualitatively similar to lamellipodium formation in cell crawling.
|
| 53 |
Identity transition in persons undergoing elective interval sterilisation and vasectomy : An approach based on identity structure analysisMcCoy, D. B. January 1986 (has links)
No description available.
|
| 54 |
The synthesis and reactions of some polysubstituted 1,2,3,4-tetrahydroisoquinolinetricarbonylchromium adductsO'Callaghan, John Mark January 1990 (has links)
No description available.
|
| 55 |
Resource contention in real-time systemsSmart, Robert John January 2003 (has links)
No description available.
|
| 56 |
Novel luminescent compounds for immunoassayBlincko, Stuart January 1989 (has links)
No description available.
|
| 57 |
Scanning tunnelling microscopy studies of TiOâ†2 surfacesMurray, William Paul January 1994 (has links)
No description available.
|
| 58 |
Multinuclear NMR studies on rhodium compounds containing N-heterocyclic ligandsSampanthar, J. T. January 1996 (has links)
No description available.
|
| 59 |
The preparation, matrix isolation and spectroscopic study of some transition metal oxides, halides and chalcogenide halidesTurff, J. W. January 1984 (has links)
No description available.
|
| 60 |
Synthesis, structure and magnetic properties of complex metal oxidesKnee, Christopher Sebastian January 1999 (has links)
No description available.
|
Page generated in 0.0973 seconds