Population Fluctuations, Nonequilibrium Flows and Instabilities in Some Model Systems (Record no. 48860)
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| 000 -LEADER | |
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| fixed length control field | 02657nam a2200277Ia 4500 |
| 008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION | |
| fixed length control field | 160627s2014||||xx |||||||||||||| ||und|| |
| 080 ## - UNIVERSAL DECIMAL CLASSIFICATION NUMBER | |
| Universal Decimal Classification number | HBNI Th70 |
| 100 ## - MAIN ENTRY--AUTHOR NAME | |
| Personal name | Somdeb Ghose |
| Relator term | author |
| 245 ## - TITLE STATEMENT | |
| Title | Population Fluctuations, Nonequilibrium Flows and Instabilities in Some Model Systems |
| 260 ## - PUBLICATION, DISTRIBUTION, ETC. (IMPRINT) | |
| Year of publication | 2014 |
| 300 ## - PHYSICAL DESCRIPTION | |
| Number of Pages | 136p. |
| 502 ## - DISSERTATION NOTE | |
| Dissertation note | 2014 |
| 502 ## - DISSERTATION NOTE | |
| Degree Type | Ph.D |
| 502 ## - DISSERTATION NOTE | |
| Name of granting institution | HBNI |
| 520 3# - SUMMARY, ETC. | |
| Summary, etc | Living entities perpetually exist away from equilibrium, a condition necessary for the proper functioning of crucial biological and biochemical processes. Tools from nonequilibrium physics are thus ideally suited to the study of such systems. This thesis, studies nonequilibrium effects in a variety of model systems. The first part of the thesis, focus on counterintuitive effects of intrinsic noise as a result of fluctuations in finite-sized populations. It is found that, at the macroscale, intrinsic noise can generate and sustain oscillations in a model of epidemic spreading. At the microscale, intracellular biochemical reactions catalyzed by mesoscopic concentrations of enzymes exhibit phenomena that qualitatively differ from those due to a single enzyme or a deterministically large concentration of the same. The second part of the thesis, studies the dynamics of microscopic particles in a viscous fluid that are autonomously motile due to the conversion of chemical energy to mechanical motion. Momentum conservation and the lack of inertia at the microscale ensure that the flows around such chemomechanically active particles are force-free and torquefree. This study presents an intuitive analytical method to study such active flows in terms of its fundamental irreducible components and to reconstruct essential features of flows around various swimming microorganisms using these “atomic†flows. Filaments constructed using a collection of such active particles, interacting through local elastic potentials and nonlocal hydrodynamics, show instabilities that develop into complex flow patterns and result in complicated translational and rotational motions. Stability analysis reveals that hydrodynamic interactions are crucial for the development of such instabilities. This thesis describes these in greater detail. |
| 650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical Term | Physics |
| 653 10 - INDEX TERM--UNCONTROLLED | |
| Uncontrolled term | BioChemical Processes |
| 653 10 - INDEX TERM--UNCONTROLLED | |
| Uncontrolled term | HBNI Th70 |
| 653 10 - INDEX TERM--UNCONTROLLED | |
| Uncontrolled term | HydroDynamic Interactions |
| 653 10 - INDEX TERM--UNCONTROLLED | |
| Uncontrolled term | Nonequilibrium Flows |
| 653 10 - INDEX TERM--UNCONTROLLED | |
| Uncontrolled term | Stability Analysis |
| 720 1# - ADDED ENTRY--UNCONTROLLED NAME | |
| Thesis Advisor | Ronojoy Adhikari |
| Relator term | Thesis advisor [ths] |
| 856 ## - ELECTRONIC LOCATION AND ACCESS | |
| Uniform Resource Identifier | http://www.imsc.res.in/xmlui/handle/123456789/354 |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) | |
| Koha item type | THESIS & DISSERTATION |
| Withdrawn status | Lost status | Damaged status | Not for loan | Current library | Full call number | Accession Number | Uniform Resource Identifier | Koha item type |
|---|---|---|---|---|---|---|---|---|
| IMSc Library | HBNI Th70 | 70520 | http://www.imsc.res.in/xmlui/handle/123456789/354 | THESIS & DISSERTATION |