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Dissertations / Theses on the topic 'Oscillatory properties'

Author: Grafiati

Published: 7 June 2025

Last updated: 2 August 2025

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1

Romanov, Vasily Vladimirovich. "MATERIAL PROPERTIES OF AORTA FROM BIAXIAL OSCILLATORY TESTS." Master's thesis, Temple University Libraries, 2010. http://cdm16002.contentdm.oclc.org/cdm/ref/collection/p245801coll10/id/117228.

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Mechanical Engineering<br>M.S.E.<br>This project addresses characterization of the material properties of aortic tissue. Understanding of these properties is important for a variety of studies including tissue engineering, effects of aging and diseases, stents engineering, and traumatic aorta rupture. The goal of the presented research was to characterize the stress-strain relationship of aorta in dynamic oscillatory biaxial loading. A setup was developed that supplied pressure loading from the physiological to sub-failure levels (between 7 and 76 kPa) to porcine aorta at frequencies ranging f

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2

Norton, Edward. "Steady State and Dynamic Oscillatory Shear Properties of Carbon Black Filled Elastomers." University of Akron / OhioLINK, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=akron1553332886931084.

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3

Vanderploeg, Eric James. "Mechanotransduction in Engineered Cartilaginous Tissues: In Vitro Oscillatory Tensile Loading." Diss., Available online, Georgia Institute of Technology, 2006, 2006. http://etd.gatech.edu/theses/available/etd-05192006-110158/.

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Thesis (Ph. D.)--Mechanical Engineering, Georgia Institute of Technology, 2007.<br>Radhakrishna, Harish, Committee Member ; LaPlaca, Michelle, Committee Member ; Nerem, Robert, Committee Member ; Garcia, Andres, Committee Member ; Levenston, Marc, Committee Chair.

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4

Contreras, Diego. "Oscillatory properties of cortical and thalamic neurons and the generation of synchronized rhythmicity in the corticothalamic network." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1996. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp04/nq25228.pdf.

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5

Chen, Ding. "Spatiotemporal Properties of Coupled Nonlinear Oscillators." Thesis, University of North Texas, 1996. https://digital.library.unt.edu/ark:/67531/metadc278564/.

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Spatiotemporal properties of classical coupled nonlinear oscillators are investigated in this thesis. Chapter 1 gives an introduction to nonlinear lattices and to the concept of breathers, that are spatially localized and temporally periodic excitation in nonlinear lattices. The concept of anti-continuous limit that provides the basic methodology in probing spatiotemporal breather properties is discussed. In Chapter 2, the general approach for finding exact breather solutions from the anti-continuous limit is examined, and the rotating wave approximation(RWA) is applied to probe the spatial st

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6

Gazes, Seth Brian. "Computer controlled device to independently control flow waveform parameters during organ culture and biomechanical testing of mouse carotid arteries." Thesis, Atlanta, Ga. : Georgia Institute of Technology, 2009. http://hdl.handle.net/1853/31812.

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Thesis (M. S.)--Mechanical Engineering, Georgia Institute of Technology, 2010.<br>Committee Chair: Rudy Gleason; Committee Member: Raymond Vito; Committee Member: W. Robert Taylor. Part of the SMARTech Electronic Thesis and Dissertation Collection.

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7

Kogan, Oleg Boris Cross Michael Clifford Cross Michael Clifford. "Stochastic and collective properties of nonlinear oscillators /." Diss., Pasadena, Calif. : California Institute of Technology, 2009. http://resolver.caltech.edu/CaltechETD:etd-06012009-145134.

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8

Damineli, Daniel Santa Cruz. "Synchronization properties of multi-oscillator circadian systems." Doctoral thesis, Universidade Nova de Lisboa. Instituto de Tecnologia Química e Biológica, 2014. http://hdl.handle.net/10362/13561.

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Dissertation presented to obtain the Ph.D degree in Computational Biology<br>Circadian oscillators are usually regarded as time-keeping mechanisms that can synchronize to environmental cycles (zeitgebers) and coordinate the timing of virtually all aspects of organismal function. Circadian pacemakers would be the main time-keepers that synchronize to light/dark cycles and convey temporal information to peripheral oscillators. However, the idea of circadian systems as being simple clocks is challenged by the coexistence, within the same organism, of multiple circadian oscillators with div

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9

Littlejohn, Samuel David. "Electrical properties of graphite nanoparticles in silicone : flexible oscillators and electromechanical sensing." Thesis, University of Bath, 2013. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.600642.

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This thesis reports the discovery of a wide negative di↵erential resistance (NDR) region in a graphite-silicone composite that was utilized to create a strain-tuned flexible oscillator. Encoding the strain into frequency mimics the behavior of mechanoreceptor neurons in the skin and demonstrates a flexible and electronically active material suitable for state of the art bio-electronic applications. The NDR was investigated over a range of composite filling fractions and temperatures; alongside theoretical modelling to calculate the tunneling current through a graphite-silicone barrier. This le

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10

Contreras, Carmen Rosa. "On some physical aspects of the group properties of point transformations of harmonic oscillators." Scholarly Commons, 1991. https://scholarlycommons.pacific.edu/uop_etds/2220.

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The purpose of our work is to study the physical aspects of the application of the Lie group analysis to simple harmonic oscillators and related systems which can or cannot be canonical ones. The mathematical part of the problem has been studied by many authors. Quite recently L. Hubbard, C.Wulfman and H. Rabitz and C. Wulfman and H.Rabitz have developed a method for a group theoretical analysis applicable to a more general class of linear systems of Ordinary Differential Equations (ODE).

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11

Arciniegas, Carlos Andres Gonzalez. "Properties of the light emitted by a silicon on-chip optical parametric oscillator (OPO)." Universidade de São Paulo, 2017. http://www.teses.usp.br/teses/disponiveis/43/43134/tde-22112017-153330/.

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The Optical Parametric Oscillator (OPO) has been one of the most versatile source of non-classical states of light. Usual configurations of such devices are a macroscopic second order nonlinear crystals inside an optical cavity. Recently the use of silicon photonics techniques allowed the implementation of high quality factor microcavities and OPOs which include several technological advantages over usual configuration as a small size, bigger bandwidth, CMOS compatibility, facility to engineer the dispersion properties and compatibility with commercial optical fiber communications. Nevertheles

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12

Baker, Charles Edmond. "On the Determination of Spectral Properties of Certain Families of Operators." The Ohio State University, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=osu1449153836.

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13

Pathak, Mihir Gaurang. "Periodic flow physics in porous media of regenerative cryocoolers." Diss., Georgia Institute of Technology, 2013. http://hdl.handle.net/1853/49056.

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Pulse tube cryocoolers (PTC) are a class of rugged and high-endurance refrigeration systems that operate without moving parts at their low temperature ends, and are capable of reaching temperatures down to and below 123 K. PTCs are particularly suitable for applications in space, guiding systems, cryosurgery, medicine preservation, superconducting electronics, magnetic resonance imaging, weather observation, and liquefaction of gases. Applications of these cryocoolers span across many industries including defense, aerospace, biomedical, energy, and high tech. Among the challenges facing the PT

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14

Åberg, Daniel. "Transition Properties of f-electrons in Rare-earth Optical Materials." Doctoral thesis, Uppsala University, Condensed Matter Theory, 2004. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-4014.

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<p>The main purpose of this thesis is to theoretically study energy levels and intra-electronic transition intensities for various f-electron systems. The f-f electronic dipole transitions are parity-forbidden for a free ion but become non-zero when the ion is subject to a crystal-field. This is commonly described within the framework of Judd-Ofelt theory which accounts for the mixing of odd parity into the wave-functions.</p><p>Some refinements and quantitative studies have been made by applying many-body perturbation theory, or the perturbed functions approach, to obtain effective dipole ope

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15

Durugo, Samuel O. "Higher-order airy functions of the first kind and spectral properties of the massless relativistic quartic anharmonic oscillator." Thesis, Loughborough University, 2014. https://dspace.lboro.ac.uk/2134/16497.

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This thesis consists of two parts. In the first part, we study a class of special functions Aik (y), k = 2, 4, 6, ··· generalising the classical Airy function Ai(y) to higher orders and in the second part, we apply expressions and properties of Ai4(y) to spectral problem of a specific operator. The first part is however motivated by latter part. We establish regularity properties of Aik (y) and particularly show that Aik (y) is smooth, bounded, and extends to the complex plane as an entire function, and obtain pointwise bounds on Aik (y) for all k. Some analytic properties of Aik (y) are also

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16

Radmanesh, Seyed Mohammad Ali. "Ultra-low Temperature Properties of Correlated Materials." ScholarWorks@UNO, 2018. https://scholarworks.uno.edu/td/2511.

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Abstract After the discovery of topological insulators (TIs), it has come to be widely recognized that topological states of matter can actually be widespread. In this sense, TIs have established a new paradigm about topological materials. Recent years have seen a surge of interest in topological semimetals, which embody two different ways of generalizing the effectively massless electrons to bulk materials. Dirac and, particularly, Weyl semimetals should support several transport and optical phenomena that are still being sought in experiments. A number of promising experimental results indic

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17

Katterwe, Sven-Olof. "Properties of small Bi2Sr2CaCu2O8 intrinsic Josephson junctions: confinement, flux-flow and resonant phenomena." Doctoral thesis, Stockholms universitet, Fysikum, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-62583.

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In this thesis, intrinsic Josephson junctions, naturally formed in the strongly anisotropic high-temperature superconductor Bi2Sr2CaCu2O8 (Bi-2212), are studied experimentally. For this purpose, small mesa structures are fabricated on the surface of single crystals using micro- and nano-fabrication tools, focused ion beam is used to reduce the area of the mesa-structures down to ≈ 1 × 1 μm2. The properties of charge transport across copper-oxide layers inside the mesas are studied by intrinsic tunneling spectroscopy. Temperature, bias and magnetic field dependences of current-voltage character

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18

Zillmer, Rüdiger. "Statistical properties and scaling of the Lyapunov exponents in stochastic systems." Phd thesis, Universität Potsdam, 2003. http://opus.kobv.de/ubp/volltexte/2005/125/.

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Die vorliegende Arbeit umfaßt drei Abhandlungen, welche allgemein mit einer stochastischen Theorie für die Lyapunov-Exponenten befaßt sind. Mit Hilfe dieser Theorie werden universelle Skalengesetze untersucht, die in gekoppelten chaotischen und ungeordneten Systemen auftreten. <br /> <br /> Zunächst werden zwei zeitkontinuierliche stochastische Modelle für schwach gekoppelte chaotische Systeme eingeführt, um die Skalierung der Lyapunov-Exponenten mit der Kopplungsstärke ('coupling sensitivity of chaos') zu untersuchen. Mit Hilfe des Fokker-Planck-Formalismus werden Skalengesetze hergeleitet, d

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19

Schläger, Laura [Verfasser], Carmen [Gutachter] Wellmann, and Angsar [Gutachter] Büschges. "Ionic currents and intrinsic properties of key interneurons and their influence on network activity in a chain of coupled oscillators / Laura Schläger ; Gutachter: Carmen Wellmann, Angsar Büschges." Köln : Universitäts- und Stadtbibliothek Köln, 2018. http://d-nb.info/1177241226/34.

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20

Padula, Daniel Paulino Figueiredo. "Protótipo para medição das propriedades viscoelásticas de tecidos moles." Universidade de São Paulo, 2007. http://www.teses.usp.br/teses/disponiveis/59/59135/tde-23062008-205741/.

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O estudo de força aplicada em função da deformação dos materiais é um método comum para estudar as propriedades mecânicas dos mesmos. Este trabalho descreve o desenvolvimento do protótipo de um instrumento dedicado à medição das propriedades viscoelásticas de tecidos moles. O protótipo é composto por um módulo de excitação, um de medição do deslocamento e outro de medição da carga, arranjados de forma compacta para proporcionar a sua aplicação em centro cirúrgico. O módulo de medição do deslocamento é baseado em um sensor magnetoresistivo posicionado eqüidistante entre dois pequenos magnetos c

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21

Ostermann, Florian [Verfasser], Christian Oliver [Akademischer Betreuer] Paschereit, Rene [Akademischer Betreuer] Woszidlo, et al. "Fundamental properties of a spatially oscillating jet emitted by a fluidic oscillator / Florian Ostermann ; Gutachter: Christian Oliver Paschereit, Julien Weiss, Sven Olaf Grundmann, Rene Woszidlo ; Christian Oliver Paschereit, Rene Woszidlo." Berlin : Technische Universität Berlin, 2018. http://d-nb.info/1162189630/34.

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22

Nitsche, Robert. "Optical Properties of Organic Semiconductors: from Submonolayers to Crystalline Films." Doctoral thesis, [S.l.] : [s.n.], 2005. http://deposit.ddb.de/cgi-bin/dokserv?idn=979835186.

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23

Nitsche, Robert. "Optical Properties of Organic Semiconductors: from Submonolayers to Crystalline Films." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2006. http://nbn-resolving.de/urn:nbn:de:swb:14-1147356837431-39487.

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We have measured the optical properties of films of the organic semiconductors PTCDA (3,4:9,10-perylene-tetracarboxylic dianhydride) and HBC (peri-hexabenzocoronene), prepared by Organic Molecular Beam Expitaxy (OMBE), on different substrates by means of Differential Reflectance Spectroscopy (DRS). The optical setup enables us to directly follow the thickness dependent optical properties of the organic films, starting from submonolayer coverage up to thicker films on the order of 20 monolayers (ML) film thickness. Due to the different optical nature of the different substrates used, i.e., mica

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24

BERECZKI, ALLAN. "Desenvolvimento de um laser DPSSL polarizado com mais de 100 W de potência e parâmetro de qualidade próximo de um." reponame:Repositório Institucional do IPEN, 2016. http://repositorio.ipen.br:8080/xmlui/handle/123456789/26822.

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Submitted by Claudinei Pracidelli (cpracide@ipen.br) on 2016-11-11T16:24:00Z No. of bitstreams: 0<br>Made available in DSpace on 2016-11-11T16:24:00Z (GMT). No. of bitstreams: 0<br>A operação dinamicamente estável com zonas conjuntas foi obtida para um ressonador laser contendo dois bastões de Nd:YAG com módulos laser comerciais. O ressonador não polarizado gerou 115 W de potência no modo transversal fundamental TEM00. Quando polarizado por lâmina de Brewster atingiu 100,5W de potência de saída com 91% de polarização. Quando o ressonador foi polarizado com um polarizador de filme fino, obteve-

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25

Port, Martin. "Čtyřelektrodový impedanční pletysmograf." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2014. http://www.nusl.cz/ntk/nusl-220285.

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This master’s thesis is an introduction to the measurement of changes in tissue impedance of blood flow by impedance plethysmography. Other chapters deal with the kinds of plethysmographs and their principles. The aim is to draft four-electrode impedance plethysmograph to measure changes in tissue impedance depending on blood flow. First, describe the individual blocks of the medical instrument. The practical part of the master’s thesis involves circuit design four-electrode plethysmograph. Given that a very important role in its function plays a constant current source operating at a frequenc

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26

Raynal, Caroline. "Frottement avec glissement de polymères fondus : filières à haute et basse énergie de surface." Université Joseph Fourier (Grenoble), 1997. http://www.theses.fr/1997GRE10002.

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Nous analysons l'ecoulement de polymeres fondus de grandes masses moleculaires dans des contractions brusques. Dans des filieres a haute energie de surface, un glissement macroscopique se manifeste pour des debits moderes lors de l'ecoulement oscillant. Pour des debits du meme ordre, un regime instable se developpe en amont de la contraction. Dans ce memoire, une etude experimentale detaillee de l'ecoulement oscillant a ete menee pour deux polyethylenes et les resultats obtenus pour l'un des produits ont permis de valider un modele theorique. Pour trois familles de polymeres, deux polyethylene

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27

Hruboš, Zdeněk. "Oscilátory generující nekonvenční signály." Doctoral thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2016. http://www.nusl.cz/ntk/nusl-239937.

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Dizertační práce se zabývá elektronicky nastavitelnými oscilátory, studiem nelineárních vlastností spojených s použitými aktivními prvky a posouzením možnosti vzniku chaotického signálu v harmonických oscilátorech. Jednotlivé příklady vzniku podivných atraktorů jsou detailně diskutovány. V doktorské práci je dále prezentováno modelování reálných fyzikálních a biologických systémů vykazujících chaotické chování pomocí analogových elektronických obvodů a moderních aktivních prvků (OTA, MO-OTA, CCII ±, DVCC ±, atd.), včetně experimentálního ověření navržených struktur. Další část práce se zabývá

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28

Johnson, Monica Anne. "Oscillatory flow birefringence properties of "ring" Polystyrene solutions." 1996. http://catalog.hathitrust.org/api/volumes/oclc/36932512.html.

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29

Chang, Jien-Kuen, and 張錦坤. "On the Oscillatory properties of Nonlinear Differential Equations." Thesis, 1999. http://ndltd.ncl.edu.tw/handle/65478296869679277976.

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30

Yu, Ming-Cun, and 俞明村. "The oscillatory properties of some nonlinear functional differential equations." Thesis, 1989. http://ndltd.ncl.edu.tw/handle/15001296787765052935.

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31

Lou, Yuh Ling, and 婁裕麟. "On the Oscillatory Properties of Some Nonlinear Second Order Diffreence Equations." Thesis, 1994. http://ndltd.ncl.edu.tw/handle/66653555939052447588.

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碩士<br>輔仁大學<br>數學系<br>82<br>In this paper some oscillation criteria are obtained for the second order nonlinear difference equation with the neutral and delay terms .DELTA.(c(n-1).DELTA.(x(n-1)+p(n-1)x(n-1-l)))+q(n)f( x(n-k))=0, n=1,2,.bcdot. .bcdot..bcdot. where .DELTA. is the forward difference operater, i.e. .DELTA.x(n)=x(n+1)-x(n);. ibrace.c(n).rbrace., .ibrace.p(n).rbrace., .ibrace.q(n).rbrace., are the real sequences. k, l are positive integers. and n. gtoreq. max .ibrace.k,l+1 .rbrace

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32

Tseng, Po-kang, and 曾柏剛. "Properties of a polymer chain under an oscillatory driveor flow field." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/10221757363688681241.

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碩士<br>國立中央大學<br>物理研究所<br>95<br>Polymer physics is a very important subject whose application can be found in various, which are both materials as well as in biological machinery. The purpose of this research is to investigate the dynamical properties of a polymer chain. We use the dynamical models of a polymer chain consider a polymer under different kinds of an oscillatory external drives in a structure and dynamics of a solution. Our purpose is to understand how the polymer chain are affected by the external oscillatory drive. In this thesis, we consider a polymer chain under different oscil

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33

KE, FEI-LIN, and 柯飛麟. "Studies on oscillatory properties of some first order differential equations with deviating arguments." Thesis, 1989. http://ndltd.ncl.edu.tw/handle/55953692478909943706.

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34

Crain, Patrick Michael. "Polymer/solvent interactions as revealed by dynamic viscoelastic and oscillatory flow birefringence properties for polystyrene solutions." 1991. http://catalog.hathitrust.org/api/volumes/oclc/25662306.html.

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Thesis (Ph. D.)--University of Wisconsin--Madison, 1991.<br>Typescript. Vita. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 295-300).

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Braid, Frederick I. "Viscoelastic and oscillatory flow birefringence properties of PMM-PS molecular "bottlebrush" polymers and errors in the determination of viscoelastic properties arising from deviations from the "surface loading" and "gap loading" limits in small amplitude oscillatory shear experiments." 1996. http://catalog.hathitrust.org/api/volumes/oclc/36836582.html.

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Thesis (Ph. D.)--University of Wisconsin--Madison, 1996.<br>Typescript. Vita. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 341-344).

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Pang, Chan Hoi. "The mechanical properties of raw potato tissues as measured by uniaxial compression and small strain oscillatory shear tests." 1995. http://hdl.handle.net/1993/18959.

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Stokich, Theodore M. "The influence of polymer/solvent interactions on the viscoelastic and oscillatory flow birefringence properties of polystyrene and polyisoprene solutions." 1988. http://catalog.hathitrust.org/api/volumes/oclc/19759530.html.

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Vishue, Shanker. "Synthesis and dielectric properties of nanocrystalline titanates,zirconates,niobates and tantalates:discovery of an unusual oscillatory behaviour of the dietectric properties of composites of nano and micron sized particales." Thesis, 2007. http://localhost:8080/iit/handle/2074/3650.

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Bhate, Vijay. "Solution Behaviour of Mixed Surfactant Systems In The Presence Of Electrolytes and Their Effect on Oscillatory Rheological Properties of Sodium Carboxymethyl Cellulose." Thesis, 2015. http://ethesis.nitrkl.ac.in/7070/1/Solution__Bhate_2015.pdf.

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Data on critical micelle concentration (CMC) of mixed surfactant system containing solution of CTAB + IGEPAL CO 890 have been evaluated as a function of mole fraction of CTAB. The results have been studied in terms of Rubingh’s theory and the interaction parameter (ß) has been calculated. Experimental values of mixed surfactants 3:7 and 7:3 has been evaluated as 0.1 and 0.2 mM respectively, which is lower than the theoretical values. Thus, best suited for solution parameter analysis and further rheological properties is 3:7. Simultaneously the effect of mixed surfactant solutions on rheologica

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Kogan, Oleg Boris. "Stochastic and Collective Properties of Nonlinear Oscillators." Thesis, 2009. https://thesis.library.caltech.edu/2370/2/MyThesis.pdf.

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<p>Two systems of nonlinear oscillators are considered: (a) a single periodically driven nonlinear oscillator interacting with a heat bath, which may operate in the regime of bistability or monostability, and (b) a one-dimensional chain of self-sustaining phase oscillators with nearest-neighbor interaction.</p> <p>For a single oscillator we analyze the scaling crossovers in the thermal activation barrier between the two stable states. The rate of metastable decay in nonequilibrium systems is expected to display scaling behavior: the logarithm of the decay rate should scale as a power of the

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Cao, Xuewei [Verfasser]. "Low-frequency elastic properties of glasses at low temperatures : investigations with double-paddle oscillators based on a dc-SQUID readout / presented by Xuewei Cao." 2005. http://d-nb.info/974008338/34.

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