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Dissertations / Theses on the topic 'Temperature field in the shell'

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Published: 28 May 2022

Last updated: 31 July 2025

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1

Дубинка, С. Ю. "Моделювання теплових полів в багатошарових системах із заданими граничними умовами". Master's thesis, Сумський державний університет, 2019. http://essuir.sumdu.edu.ua/handle/123456789/75674.

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Сформована математична задача дослідження, визначені початкові та граничні умови поширення теплової енергії. Виконано моделювання теплового поля, що базувалось на рішенні диференціального рівняння теплопровідності. Розглянуто процес теплопередачі між матеріалами стінки. Розроблено математичну модель при переході температури в оболонці з покриттям. Розроблена комп’ютерна програма в середовищі Matlab. Програмно реалізований чисельний розрахунок температурного поля оболонки.

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2

Katona, Gregory. "Field Theoretic Lagrangian From Off-Shell Supermultiplet Gauge Quotients." Doctoral diss., University of Central Florida, 2013. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/5958.

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Recent efforts to classify off-shell representations of supersymmetry without a central charge have focused upon directed, supermultiplet graphs of hypercubic topology known as Adinkras. These encodings of Super Poincare algebras, depict every generator of a chosen supersymmetry as a node-pair transformtion between fermionic / bosonic component fields. This research thesis is a culmination of investigating novel diagrammatic sums of gauge quotients by supersymmetric images of other Adinkras, and the correlated building of field theoretic worldline Lagrangians to accommodate both classical and

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3

Kestin, Gregory Michael. "Light-Shell Theory Foundations." Thesis, Harvard University, 2014. http://dissertations.umi.com/gsas.harvard:11596.

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We study the motivation and groundwork for the construction of a Light-Shell Effective Theory, an effective field theory for describing the matter emerging from high-energy collisions and the accompanying radiation. We begin in chapter 2 with a simple electrodynamics calculation to motivate the picture of the ``light-shell," in which all electric and magnetic fields lie on a spherical shell that moves outward at the speed of light. The result turns out to do more than motivate, as it also hints at an important feature of the theory, namely the gauge in which we subsequently choose to do cal

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4

Hedqvist, Anders. "Quantitative plasma spectroscopy in a resistive shell reversed-field pinch." Doctoral thesis, KTH, Physics, 1999. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-2868.

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5

González-León, Juan A. (Juan Antonio). "Low temperature processing of baroplastic core-shell nanoparticles and block copolymers." Thesis, Massachusetts Institute of Technology, 2005. http://hdl.handle.net/1721.1/36202.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Materials Science and Engineering, February 2006.<br>Includes bibliographical references (p. 131-144).<br>Baroplastics are nanophase polymeric materials comprised of two components that can miscibilize under pressure thereby facilitating flow. The possibility of processing these materials at low temperatures was the main focus of this work. Block copolymer baroplastics comprised of a low Tg and a high Tg component that microphase separate, such as polystyrene-block-poly(butyl acrylate) (PS-b-PBA) and polystyrene-b-poly(2-ethyl he

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6

Willis, Nicholas Hedley. "BRST quantisation and finite temperature field theory." Thesis, University of Cambridge, 1996. https://www.repository.cam.ac.uk/handle/1810/270450.

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7

Lang, Gladys Hau-Wan Goddard William A. Koonin Steven E. "Auxiliary-field Monte Carlo methods for interacting fermions application to the nuclear shell model /." Diss., Pasadena, Calif. : California Institute of Technology, 1993. http://resolver.caltech.edu/CaltechTHESIS:10222009-160215418.

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Thesis (Ph. D.)--California Institute of Technology, 1993. UM #93-25,365.<br>Advisor names found in the Acknowledgments pages of the thesis. Title from home page. Viewed 01/22/2010. Includes bibliographical references.

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8

Belopolsky, Alexander. "The role of tachyons and dilatons in off-shell string field theory." Thesis, Massachusetts Institute of Technology, 1996. http://hdl.handle.net/1721.1/32685.

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9

Sajjad, Aqil. "An effective theory on the light shell." Thesis, Harvard University, 2014. http://nrs.harvard.edu/urn-3:HUL.InstRepos:13064982.

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We describe work on the construction of an effective field theory on a spherical light shell. The motivation arises from classical electromagnetism: If a collision produces charged particles with zero net charge emerging simultaneously from a point and instantaneously accelerating to the speed of light, then the electromagnetic fields due to these charges lie entirely on a spherical shell expanding at the speed of light. We show that this also applies to classical color radiation from high-energy collisions that produce colored particles. Specifically, the color fields produced in such a proce

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10

Crottini, Andrea. "Low temperature near-field spectroscopy of quantum wires /." [S.l.] : [s.n.], 2001. http://library.epfl.ch/theses/?nr=2374.

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11

Keil, Werner H. "Perturbative finite temperature field theory in Minkowski space." Thesis, University of British Columbia, 1989. http://hdl.handle.net/2429/29127.

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This thesis contains a perturbative analysis of decay and scattering rates in finite temperature and density environments. The discussion is based on the Niemi-Semenoff real-time formulation of quantum field theory at finite temperature. Two systems are investigated: neutron β decay at finite density, and Higgs boson decay with radiative QED corrections, at finite temperature. For neutron β decay, a fully relativistic analysis at tree level is presented. An analytic formula for the free neutron decay rate is derived, and subsequently generalized to a finite-density environment. The decay rate

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12

Braithwaite, Joanne. "Magnetic field and temperature dependence of semiconductor lasers." Thesis, University of Surrey, 1994. http://epubs.surrey.ac.uk/842949/.

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The work described in this thesis investigates the effect of modifying the band structure in order to reduce the threshold current and its temperature sensitivity in 1.55mum InGaAsP/InP lasers. The threshold current, amplified spontaneous emission spectrum and lasing wavelength of a bulk InGaAsP laser have been measured in strong magnetic fields up to 14 Tesla, over the temperature range 70 - 240 K. A study of the effect of a magnetic field, B, on the shape of the amplified spontaneous emission spectrum and the rate at which the amplified spontaneous and lasing spectra shift with B, confirms t

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13

Rawlinson, Andrew A. "Calculations in gauge field theory at finite temperature /." Title page, contents and abstract only, 1992. http://web4.library.adelaide.edu.au/theses/09PH/09phr261.pdf.

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14

Johnston, Martin David. "Current and field distribution in high temperature superconductors." Thesis, Imperial College London, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.298870.

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15

Karmarkar, Makarand Anand. "Smart material composites for magnetic field and force sensors." Thesis, Virginia Tech, 2008. http://hdl.handle.net/10919/34686.

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Piezoelectric material based sensors are widely used in applications such as automobiles, aircraft, and industrial systems. In past decade, attention has been focused on synthesizing composites that can provide multifunctional properties, i.e., same material exhibits two or more properties. In this group of composites, magnetoelectric materials are particularly interesting as they provide the opportunity of coupling magnetic and electric field. Another class of composite materials that are being actively pursued is piezoresistive materials. Piezoresistivity refers to change in resistance with

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16

Penante, Brenda Correa de Andrade. "On-shell methods for off-shell quantities in N = 4 Super Yang-Mills : from scattering amplitudes to form factors and the dilatation operator." Thesis, Queen Mary, University of London, 2016. http://qmro.qmul.ac.uk/xmlui/handle/123456789/23649.

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Planar maximally supersymmetric Yang-Mills theory (N = 4 SYM) is a special quantum fi eld theory. A few of its remarkable features are conformal symmetry at the quantum level, evidence of integrability and, moreover, it is a prime example of the AdS/CFT duality. Triggered by Witten's twistor string theory [1], the past 15 years have witnessed enormous progress in reformulating this theory to make as many of these special features manifest, from the choice of convenient variables to recursion relations that allowed new mathematical structures to appear, like the Grassmannian [2]. These methods

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17

Gray, Norman. "Dimensionally regulated on-shell renormalisation in QCD and QED." Thesis, n.p, 1991. http://oro.open.ac.uk/19423/.

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18

Kulikov, Igor Konstantinovich. "Temperature, topology and quantum fields." Diss., Georgia Institute of Technology, 1996. http://hdl.handle.net/1853/29870.

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19

James, Kieron Anthony. "The temporal axial gauge at finite temperature." Thesis, University of Cambridge, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.358658.

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20

Nolan, Leah Sarah Polly. "Equatorial sea surface temperature seasonality in the Mississippian (Carboniferous) derived from brachiopod shell calcite." Thesis, University of Leicester, 2018. http://hdl.handle.net/2381/42667.

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The stable isotope composition (δ18O and δ13C) of biogenic (low-magnesium) calcite is commonly used as a palaeoenvironment proxy. These proxies are used to help understand the palaeotropical environment in the Brigantian to help elucidate the timing of the onset of the Late Palaeozoic icehouse. However, to validate isotope data there needs to be an understanding of the environment in which the constituent organisms lived and the preservation of their calcitic shells must be assessed to ensure resultant data are reliable. This study focussed on shell beds at two localities on the Derbyshire car

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21

Greene, Jeff Isom. "Cooling tower temperature setpoint optimization based on field data." Thesis, Georgia Institute of Technology, 1993. http://hdl.handle.net/1853/16994.

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22

Hole, Christopher. "Pulsed magnetic field characterisation of technological high temperature superconductors." Thesis, University of Oxford, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.294363.

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23

Brigante, Mauro. "Aspects of finite temperature field theories in Ads/CFT." Thesis, Massachusetts Institute of Technology, 2008. http://hdl.handle.net/1721.1/45454.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Physics, 2008.<br>Includes bibliographical references (p. 119-124).<br>In this dissertation I study some properties of field theories at finite temperature using the AdS/CFT correspondence. I present a general proof of an "inheritance principle" satisfied by a weakly coupled SU(N) (or U(N)) gauge theory with adjoint matter on a class of compact manifolds (like S3). In the large N limit, finite temperature correlation functions of gauge invariant single-trace operators in the low temperature phase are related to those at zero temp

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24

Olofsson, Erik. "Closed-loop control and identification of resistive shell magnetohydrodynamics for the reversed-field pinch." Licentiate thesis, KTH, School of Electrical Engineering (EES), 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-12794.

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<p>It is demonstrated that control software updates for the magnetic confinement fusion experiment EXTRAP T2R can enable novel studies of plasma physics. Specifically, it is shown that the boundary radial magnetic field in T2R can be maintained at finite levels by feedback. System identification methods to measure in situ magnetohydrodynamic stability are developed and applied with encouraging results. Subsequently, results from closed-loop identification are used for retooling the T2R regulator. The track of research here pursued could possibly be relevant for future thermonuclear fusion reac

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25

Bloom, Scott Harris. "Superconducting and normal compounds : some high field/high pressure effects /." Thesis, Connect to Dissertations & Theses @ Tufts University, 1989.

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Thesis (Ph.D.)--Tufts University, 1989.<br>Submitted to the Dept. of Physics. Includes bibliographical references (leaves 192-204). Access restricted to members of the Tufts University community. Also available via the World Wide Web;

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26

Zou, Shengnan [Verfasser]. "Magnetization of High Temperature Superconducting Trapped-Field Magnets / Shengnan Zou." Karlsruhe : KIT Scientific Publishing, 2017. http://www.ksp.kit.edu.

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27

Khalil, Nahla Mahmood. "Novel optoelectronic temperature sensor having application in the biomedical field." Thesis, City University London, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.328417.

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28

Van, der Walt Jacobus Gert. "Radiation field shaping through low temperature thermal-spray in radiotheraphy." Thesis, Bloemfontein : Central University of Technology, Free State, 2009. http://hdl.handle.net/11462/116.

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Thesis (D. Tech.) -- Central University of Technology, Free State, 2009<br>Superficial cancerous lesions are commonly treated through low energy X-ray or electron radiation in radiotherapy. The treatment units that produce the radiation are equipped with square, rectangular and round applicators of different sizes. These applicators attach to the treatment units and define the radiation field size applied during treatment. An applicator is chosen to fit the shape of the cancerous lesion on the patient as closely as possible. Since cancerous lesions are irregular in shape, there will always be

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29

Oliver, Matthew. "Density, temperature and magnetic field measurements in low density plasmas." Thesis, University of Oxford, 2018. http://ora.ox.ac.uk/objects/uuid:df217453-1e10-4684-beb7-83c1bcecf285.

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Low density plasmas are found throughout the known universe. Therefore, accurate diagnostic methods have implications for our understanding of a variety of topics, ranging from star formation to the semi conductor industry. Low density plasmas are ubiquitous in the material processing industry. However, measurements of the electron temperature and density, two of the most fundamental plasma properties, are not straightforward. In the laboratory, we create a low density, radio frequency, helium plasma with a bi-Maxwellian electron distribution, similar to those found in the semiconductor proces

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30

Neibert, Michael Joseph. "Thermal stresses of a trimaterial medium in a nonuniform temperature field." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 1993. http://handle.dtic.mil/100.2/ADA267243.

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Thesis (M.S. in Mechanical Engineering) Naval Postgraduate School, March 1993.<br>Thesis advisor(s): Salinas, David ; Kwon, Young. "March 1993." Includes bibliographical references. Also available online.

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31

Strumke, Inga. "Field Theory at finite Temperature and Density : Applications to Quark Stars." Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for fysikk, 2012. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-16796.

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Abstract:In this thesis we will consider different thermal field theories, and derive an equation of state for deconfined matter.This equation of state will be used in the Tolman-Oppenheimer-Volkoff (TOV)-equations to calculate the mass andradius of quark stars.Firstly, a scalar field with a four-point interaction is studied at finitie temperature, and the validity of the perturba-tive expansion is discussed. The pressure is calculated to fifth order.Secondly, QED and QCD are studied at finite chemical potential and zero temperature, and an equation of state fordegenerate quark matter is deriv

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32

Cheong, Hoon Sin. "Cryogenically-cooled high temperature superconducting (HTS) coils for low field MRI." Thesis, University of Sheffield, 2011. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.575382.

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In low field MRl (<0.5T), the signal-to-noise ratio (SNR) is predominantly degraded by thermal noise of the imaging coil when the sample loading is minimized. This means surface coils made of high temperature superconductors (HTS) should have an SNR significantly higher than their room-temperature copper equivalents due to the reduction in resistivities. While this hypothesis has been reportedly validated, the actual efficacy of HTS coils is still debatable as the benchmark setups in the prior art had an unfavorably large coil-to-sample separation which diminished the SNR yield. This thesis is

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33

Monica, Andrew Hayes. "In-plane carbon nanotube field emitters for high temperature integrated electronics." Connect to Electronic Thesis (ProQuest) Connect to Electronic Thesis (CONTENTdm), 2008. http://worldcat.org/oclc/436284954/viewonline.

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34

Culverhouse, Stephen Richard. "Neutron spectroscopy of rare earth intermetallics and high temperature superconductors." Thesis, University of Southampton, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.255651.

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35

Kovacik, P., M. Soltys, and F. Stepanek. "Core-shell Structured Composite Silica Micro- and Nanoparticles with Ability Release a De fined Quantity „on Demand“." Thesis, Sumy State University, 2013. http://essuir.sumdu.edu.ua/handle/123456789/35571.

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The aim of this work was the preparation of biocompatible micro- and nanoparticles with a hollow in-terrior. The particles must be able to encapsulate and store a chemical payload for a certain time, followed by the release on demand of this payload. In our previous work [13] we have prepared silica microparticles with a hollow core and found that the diffusion across the mesoporous silica shell was strongly dependent on temperature. In this work, we used this dependence and attached iron oxide nanoparticles on the sur-face of the silica shell to create composite iron oxide/silica particles. T

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36

Thorne, Jacob Aaron. "Electric field optimisation for cryogenic nEDM experiments." Thesis, University of Sussex, 2018. http://sro.sussex.ac.uk/id/eprint/80282/.

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This thesis presents details of the design, construction and measurements of an apparatus (Blue Elbow cryostat) for high voltage testing of a full-size cryogenic nEDM cell in liquid helium at 4.2 K SVP. The test cell is cylindrical and of 24 cm internal diameter with stainless steel electrodes and an insulating borosilicate glass spacer. The cylinder axis of the cell is vertical and the insulator is located in grooves in the electrodes. The electrode separation can be varied from 0.2 cmto 2.6 cm and a voltage of up to 260 kV can be applied across the cell. It has long been expected that a nEDM

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37

Sun, Momo T. (Momo Tianxiao). "Nervi's design and construction methods for two thin-shell structures : the Leverone Field House and Thompson Arena." Thesis, Massachusetts Institute of Technology, 2017. http://hdl.handle.net/1721.1/111511.

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Thesis: M. Eng., Massachusetts Institute of Technology, Department of Civil and Environmental Engineering, 2017.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (pages 53-54).<br>This thesis studies two major thin-shell concrete structures by Pier Luigi Nervi (1891- 1979) - the Leverone Field House and Thompson Arena. These two similar parabolic vaults are two of the few international structures he has completed in the United States. Situated across the street from each other at Dartmouth College, these two thin-shell concrete structures designed only a few year

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38

Wong, Stephen Man Hoe. "Finite temperature field theory - hard thermal loops and the quark-gluon plasma." Thesis, University of Cambridge, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.309328.

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39

SOARES, LARISSA MARIA BESERRA. "OPTICAL FIBER FABRY-PEROT CAVITIES FOR SENSING TEMPERATURE, STRAIN AND MAGNETIC FIELD." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2015. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=26587@1.

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PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO<br>COORDENAÇÃO DE APERFEIÇOAMENTO DO PESSOAL DE ENSINO SUPERIOR<br>PROGRAMA DE SUPORTE À PÓS-GRADUAÇÃO DE INSTS. DE ENSINO<br>PROGRAMA DE EXCELENCIA ACADEMICA<br>Nesta dissertação foram discutidos os resultados obtidos com um interferômetro Fabry-Perot intrínseco (FPI) a fibra óptica, para sensoriamento de deformação longitudinal, temperatura e campo magnético. O FPI foi construído através da emenda de uma fibra capilar entre dois pedaços de fibra padrão de telecomunicação, formando uma cavidade de ar retangular. Esta cavidade, quando atua com

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40

Freitas, P. S., Leon J. Clarke, H. A. Kennedy, and C. A. Richardson. "Inter- and intra-specimen variability masks reliable temperature control on shell Mg/Ca ratios in laboratory and field cultured Mytilus edulis and Pecten maximus (bivalvia)." 2008. http://hdl.handle.net/10454/4760.

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yes<br>The Mg/Ca ratios of biogenic calcite is commonly seen as a valuable palaeo-proxy for reconstructing past ocean temperatures. The temperature dependence of Mg/Ca ratios in bivalve calcite has been the subject of contradictory observations. The palaeoceanographic use of a geochemical proxy is dependent on initial, rigorous calibration and validation of relationships between the proxy and the ambient environmental variable to be reconstructed. Shell Mg/Ca ratio data are reported for the calcite of two bivalve species, Mytilus edulis (common mussel) and Pecten maximus (king scallo

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41

Chen, Sin-An, and 陳信安. "Au(Sn)-SnO2 core-shell nanowires : high temperature nanothermometers." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/52750147529512644028.

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碩士<br>國立清華大學<br>材料科學工程學系<br>97<br>In this study, a one-step approach is utilized to fabricate Au-SnO2 core-shell nanowires. 250 nm Au nanoparticles were dispersed on a Si substrate with 350 nm silica capping layer, Sn vapor was provided by Sn powders at elevated temperature. The crystal structure, microstructure, and the chemical composition of the as-grown products were examined by X-ray diffractometer (XRD), and field emission transmission electron microscopy (FETEM) attached with an energy dispersive spectrometer (EDS). To investigate the thermal behaviors of Au(Sn)-SnO2 core-shell nanowire

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42

Berndt, Ingo [Verfasser]. "Structure of multi-temperature sensitive core shell microgels / Ingo Berndt." 2005. http://d-nb.info/978446917/34.

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43

Su, Ting-Feng, and 蘇庭鋒. "Creep Buckling of Column and Shell Structures at Room Temperature." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/89221161672815289165.

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碩士<br>國立清華大學<br>動力機械工程學系<br>94<br>The creep buckling behavior of column and shell structures at room temperature was investigated. In experiment, the mechanical properties of test structures were measured by tensile test. An experimental setup was designed to measure the material creep behavior at different stress levels. The material creep behavior is described by the strain-hardening equation and modified time-hardening equation. In analysis, the creep deformation and the corresponding critical time at creep buckling for column and shell structures were analyzed by finite element code ANSYS.

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44

Chang, Fang-Hao, and 張方豪. "Temperature Field Variation of Stay Cable Effected by Environmental Temperature." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/cp2794.

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碩士<br>國立雲林科技大學<br>營建工程系<br>103<br>Cables are the most critical force-transmitting members of cable-supported bridges. An accurate determination of cable force accordingly plays an important role in the structural health monitoring of suspension or cable-stayed bridges. The alternation of cable force, however, also strongly relates with the change of cable temperature. Therefore, the analysis for the temperature field to be effected by the variation of environmental temperature is actually a crucial topic to investigate, but seldom explored in the literature. This research is first aimed to dev

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45

DING, JUN-SHOU, and 鄧俊壽. "Numerical simulation of the flow field on an APDS's shell." Thesis, 1993. http://ndltd.ncl.edu.tw/handle/48632099635739034277.

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46

B, S. W., and 施文彬. "Flow Field and Temperature Field Anallysis in The Rectaangular Space." Thesis, 1999. http://ndltd.ncl.edu.tw/handle/38211593248601168779.

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碩士<br>國立臺灣科技大學<br>機械工程系<br>87<br>The rectangular space is widely used in engineer application, for instance, cooling room, wind tunnel, heat exchanger, and cleanroom in semiconductor industry. The thesis uses the numerical method to study the flow situation of fluid in the rectangular space. The flow is specified in the laminar region, with isothermal boundary condition or point heat sources in the rectangular space. The velocity and temperature distributions are calculated. The positions of flow inlet and exit are varied. The numbers of flow exit are changed. The influences of the

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47

Nah, Junghyo 1978. "High performance germanium nanowire field-effect transistors and tunneling field-effect transistors." Thesis, 2010. http://hdl.handle.net/2152/ETD-UT-2010-12-2268.

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The scaling of metal-oxide-semiconductor (MOS) field-effect transistors (FETs) has continued for over four decades, providing device performance gains and considerable economic benefits. However, continuing this scaling trend is being impeded by the increase in dissipated power. Considering the exponential increase of the number of transistors per unit area in high speed processors, the power dissipation has now become the major challenge for device scaling, and has led to tremendous research activity to mitigate this issue, and thereby extend device scaling limits. In such efforts, non-plana

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48

Huth, Frank Lukas. "Local interactions and shell-model interactions from chiral effective field theory." Phd thesis, 2018. http://tuprints.ulb.tu-darmstadt.de/7645/5/Huth_Thesis_final.pdf.

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The strong force is a vital contribution to both, nucleon-nucleon interactions as well as complicated nu- clear many-body systems. The theory of the strong interactions is quantum chromodynamics (QCD), but it is nonperturbative in the low-energy region of interest to us. Chiral effective field theory (EFT) pro- vides a systematic framework to derive low-energy few-body interactions and currents, based on, and consistent with all relevant symmetries of QCD. Short-distance physics is not resolved explicitly and gets absorbed in contact terms with so-called low-energy constants (LECs), which

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Chen, Ping-Hong, and 陳炳宏. "Core-Shell Structure and Pertinent Resistivty-Temperature Properties in Pb0.6Sr0.4TiO3 Materials with Positive-Temperature-Coefficient of Resistivity." Thesis, 1999. http://ndltd.ncl.edu.tw/handle/09544096912419964552.

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Abstract:

碩士<br>國立臺灣科技大學<br>機械工程系<br>87<br>Abstract In this thesis, we study the microstructures, especially the core-shell structures and the corresponding ρ-T properties of Pb0.6Sr0.4TiO3 positive temperature coefficient of resistivity (PTCR) materials. Distinct ρ-T curves of materials were obtained employing different sintering processes, in which microwave sintered specimens exhibit a single Tc at about 380℃, but the specimen sintered by conventional method, on the other hand, shows an intriguing double Tc behavior. Beside the ρ-T properties, conventional sintered specimens possessed high

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You, Yu-Hao, and 游育豪. "Temperature field analysis of LED Cooling plate." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/47196823727541780474.

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Abstract:

碩士<br>元智大學<br>機械工程學系<br>99<br>As the demand of performance LED components increased and package size decreased, the heat generated more than before. The most popular ways to accelerate the cooling procedure are increase the contact area for cooling and choose the suitable materials. Aluminum heat plate is widely used for the cooling procedure, because aluminum possesses good heat dissipation, easy processed and low cost. In this study, we implemented experiment by using FLUENT, compare the results with results of temperature field by using wind tunnel testing machine. The proposed method i

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