Дисертації з теми "FRET experiments"
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Kallis, Eleni [Verfasser]. "Quantitative single-molecule FRET and its application in experiments on DNA damage recognition by PARP-1 / Eleni Kallis." Ulm : Universität Ulm, 2020. http://d-nb.info/1221671170/34.
Повний текст джерелаGötz, Markus [Verfasser], Thorsten [Akademischer Betreuer] Hugel, Thorsten [Gutachter] Hugel, and Friedrich [Gutachter] Simmel. "Multi-Color Single-Molecule FRET Experiments and Analysis : The Dynamic Protein System Hsp90 / Markus Götz ; Gutachter: Thorsten Hugel, Friedrich Simmel ; Betreuer: Thorsten Hugel." München : Universitätsbibliothek der TU München, 2017. http://d-nb.info/1172880077/34.
Повний текст джерелаKoestner, Peter E., Karen Koestner, Daniel G. Neary, and Carl C. Trettin. "An Overview of the Sierra Ancha Experimental Forest's Role in the Free-Air CO₂ Enrichment Large Wood Decomposition Experiment." Arizona-Nevada Academy of Science, 2012. http://hdl.handle.net/10150/301295.
Повний текст джерелаMinh, David. "Free energy reconstruction from irreversible single-molecule pulling experiments." Connect to a 24 p. preview or request complete full text in PDF format. Access restricted to UC campuses, 2007. http://wwwlib.umi.com/cr/ucsd/fullcit?p3258785.
Повний текст джерелаTitle from first page of PDF file (viewed June 8, 2007). Available via ProQuest Digital Dissertations. Vita. Includes bibliographical references (p. 69-72).
D'Agostino, Silvia. "Particle segregation and mixing in a dry free surface granular flow." Doctoral thesis, Università degli studi di Trento, 2021. http://hdl.handle.net/11572/317018.
Повний текст джерелаD'Agostino, Silvia. "Particle segregation and mixing in a dry free surface granular flow." Doctoral thesis, Università degli studi di Trento, 2021. http://hdl.handle.net/11572/317018.
Повний текст джерелаPerreca, Antonio. "Experimental demonstration of displacement noise free interferometry." Thesis, University of Birmingham, 2010. http://etheses.bham.ac.uk//id/eprint/817/.
Повний текст джерелаAnzuola, Valencia Esdras. "Atmospheric compensation experiments on free-space optical coherent communication systems." Doctoral thesis, Universitat Politècnica de Catalunya, 2015. http://hdl.handle.net/10803/308498.
Повний текст джерелаEn los últimos años las comunicaciones ópticas en el espacio libre han sido propuestas, analizadas e implementadas debido, principalmente, al gran ancho de banda disponible mediante esta tecnología. Aún así, en la práctica, los sistemas de radiofrecuencia (RF) han sido mantenidos en las aplicaciones comerciales debido a la mejora de los dispositivos utilizados y al desarrollo de equipos electrónicos con gran velocidad de procesado. Hoy en día la situación está cambiando como consecuencia de un incremento en la tasa de transmisión requerida en sistemas de comunicaciones terrestres y en el espacio exterior. El cambio de sistemas de RF hacia sistemas ópticos en el espacio libre implica una serie de ventajas clave que motiva la transición hacia estas tecnologías. La primera y gran ventaja de trabajar con frecuencias pertenecientes al espectro óptico es el aumento del ancho de banda disponible, ya que trabajar a alta frecuencia implica directamente un incremento en el ancho de banda. Además, la eficiencia en términos de potencia es incrementada, ya que, para un tamaño de antena fijo, la potencia de señal recivida es proporcional al inverso de la longitud de onda al cuadrado. De especial interés es el desarrollo de sistemas de comunicaciones ópticos que utilicen modulaciones complejas, lo que implica una mayor eficiencia espectral y una mayor robustez contra efectos perniciosos introducidos por el canal. La detección coherente es una avanzada técnica que permite un aumento en la eficiencia espectral y maximiza la eficiencia de la potencia recibida. Esto es debido a que los simbolos son demodulados utilizando las señales en fase y cuadratura, aumentando los grados de libertad del sistema. En este contexto, los efectos de la atmósfera sobre las comunicaciones ópticas coherentes deben ser analizadas en detalle. Las turbulencias atmosféricas distorsionan el frente de onda y son responsables del deterioro de la tasa de error en las comunicaciones ópticas en el espacio libre. El uso de óptica adaptativa para mitigar los efectos de turbulencia atmosphérica abre una ventana a la implementación de la próxima generación de sistemas de comunicaciones, basados en tecnologías coherentes. En este trabajo se describe la implementación de un sistema completo de comunicaciones ópticas coherentes utilizando una modulación coherente (QPSK) y detección heterodina. Un sistema de óptica adaptativa y algoritmos de procesado de señal son implementados con el objetivo de mitigar los diferentes efectos introducidos por el canal. Por otro lado, un nuevo método para generar frentes de onda distorsionados por el canal atmosférico es desarrollado y su eficiencia es analizada. Este método se basa en el uso de holografía binaria generada por computador (BCGH) junto con un dispositivo de modulación óptica binaria de bajo coste (DLP). El funcionamiento del sistema completo es verificado y su eficiencia, en términos de tasa de error, son analizados. La eficiencia obtenida experimentalmente es comparada contra los modelos teóricos propuestos en la literatura. La viabilidad del uso de óptica adaptativa para mitigar efectos en sistemas ópticos coherentes es experimentalmente demostrada.
Callas, Eleni. "How Free Am I?: Where Neuroscientific Experiments Can Lead Philosophy." Thesis, Boston College, 2016. http://hdl.handle.net/2345/bc-ir:106849.
Повний текст джерелаThesis advisor: Liane Young
The first two-thirds of this project is an in-depth analysis of the contemporary Free Will debate as it revolves around the Libet et al, Soon et al, and Wegner et al (“Helper Hands”) experiments. The last section of the thesis illustrates in detail the following suggestions regarding the future of the Free Will debate: that there be a shift in the fundamental question of the debate, a shift in the analysis of famous neuroscientific experiments, and a shift in the formation of future experiments that test potential elements of free will
Thesis (BA) — Boston College, 2016
Submitted to: Boston College. College of Arts and Sciences
Discipline: Scholar of the College
Discipline: Philosophy
Deutschländer, Robert. "Alltagsintuitionen zur Willensfreiheit." Doctoral thesis, Humboldt-Universität zu Berlin, 2018. http://dx.doi.org/10.18452/19245.
Повний текст джерелаFree will is one of the most crucial concepts in our daily life. It represents one of the most important aspects of daily human behaviour and has crucial importance in societal mechanism. However, despite its importance and long tradition philosophers still disagree on a definition. At the heart of the problem lie diverging intuitions about what is important for the concept of freedom. This is particular obvious in neuroscientific experiment, like the famous Libet-Experiment. Here I investigate in three empirical surveys whether the lay intuitions about freedom match freedom intuitions on which the Libet-experiment are based or rather the classical philosophical intuitions about freedom. For this purpose I adopt the empirical approach of experimental philosophy. The results demonstrate that lay people’s intuitions are pretty much in line with assumption that are made by the Libet-Experiment and contradict common philosophical intuitions about free will.
FAINOZZI, DANNY. "Espressione delle potenzialità dei Laser ad elettroni liberi attraverso esperimenti innovativi." Doctoral thesis, Università degli Studi di Trieste, 2021. http://hdl.handle.net/11368/2981745.
Повний текст джерелаMaddox, Douglas Lamar. "An experimental testbed for a free-floating manipulator." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 1993. http://handle.dtic.mil/100.2/ADA277350.
Повний текст джерелаZeng, Lingping. "Studying phonon mean free paths at the nanoscale : modeling and experiments." Thesis, Massachusetts Institute of Technology, 2016. http://hdl.handle.net/1721.1/106784.
Повний текст джерелаCataloged from PDF version of thesis.
Includes bibliographical references (pages 108-119).
Heat conduction in semiconductors and dielectrics involves cumulative contributions from phonons with different frequencies and mean free paths (MFPs). Knowing the phonon MFP distribution allows us to gain insight into the fundamental microscopic transport physics and has important implications for many energy applications. The key metric that quantifies the relative contributions of different phonon MFPs to thermal conductivity is termed thermal conductivity accumulation function. In this thesis, we advance a thermal conductivity spectroscopy technique based upon experimental observation of non-diffusive thermal transport using wire grid linear polarizer in conjunction with time-domain thermoreflectance (TDTR) pump-and-probe measurement setup. Consistent algorithm based on solution from the phonon Boltzmann transport equation (BTE) is also developed to approximately extract the thermal conductivity accumulation functions in materials studied. The heat flux suppression function appropriate for the experimental sample geometry relates the measured apparent thermal conductivities to the material's phonon MFP distributions. We develop a multi-dimensional thermal transport model based on the gray phonon BTE to find the suppression function relevant to our spectroscopy experiment. The simulation results reveal that the suppression function depends upon both the heater size and the heater array period. We also find that the suppression function depends significantly on the location of the temperature measurement. Residual suppression effect is observed for finite filling fractions (ratio of heater size to heater array period) due to the transport coupling in the underlying substrate induced by the neighboring heaters. Prior phonon MFP spectroscopy techniques suffer from one or several of the following limitations: (1) diffraction limited to micrometer lengthscales by focusing optics, (2) applying only to transparent materials, or (3) involving complex micro-fabrications. We explore an alternate approach here using wire grid linear polarizer in combination with TDTR measurement. The wire grid polarizer is designed with sub-wavelength gaps between neighboring heaters to prevent direct photo-excitation in the substrate while simultaneously functioning as heaters and thermometers during the measurement. The spectroscopy technique is demonstrated in crystalline silicon by studying length-dependent thermal transport across a range of lengthscales and temperatures. We utilize the calculated heat flux suppression functions and the measured size-dependent effective thermal conductivities to reconstruct the phonon MFPs in silicon and achieve reasonably good agreement with calculation results from first principle density function theory. Knowledge of phonon MFP distributions in thermoelectric materials will help design nanostructures to further reduce lattice thermal conductivity to achieve better thermoelectric performance in the next-generation thermoelectric devices. We apply the developed wire grid polarizer spectroscopy technique to study phonon MFP distributions in two thermoelectric materials: Nb0.95 Ti0.05FeSb and boron-doped nanocrystalline Si80Ge20B. We find that the dominant phonon MFPs that contribute to thermal conductivity in those two materials are in the a few tens to a few hundreds of nanometers. The measurement results also shed light on why nanostructuring is an effective approach to scattering phonons and improve the thermoelectric behavior.
by Lingping Zeng.
Ph. D.
PeÌrez, Navarro J. M. "Develping a 'recipe' for success in free-response Ganzfeld ESP experimental research." Thesis, Coventry University, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.289245.
Повний текст джерелаStögbauer, Tobias Roland. "Experiment and quantitative modeling of cell-free gene expression dynamics." Diss., lmu, 2012. http://nbn-resolving.de/urn:nbn:de:bvb:19-151600.
Повний текст джерелаLi, Jinxia. "Lubricating grease Experiments and modeling of wall-bounded- and free-surface flows." Doctoral thesis, Luleå tekniska universitet, Maskinelement, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-26489.
Повний текст джерелаGodkänd; 2014; 20141017 (jinlit); Nedanstående person kommer att disputera för avläggande av teknologie doktorsexamen. Namn: Jinxia Li Ämne: Maskinelement/Machine Elements Avhandling: Lubricating Grease Experiments and Modellingo f Wall-Bounded and Free-Surface Flours Opponent: Professor Arto Lehtovaara, University of Technology, Tampere, Finland Ordförande: Professor Erik Höglund, Institutionen för teknikvetenskap och matematik, Luleå tekniska universitet Tid: Fredag den 19 december 2014, kl 09.00 Plats: E632, Luleå tekniska universitet
Thomson, Robert W. "Experimental damage studies for a free electron laser weapon." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 1999. http://handle.dtic.mil/100.2/ADA366836.
Повний текст джерелаJones, Ryan Edward 1974. "Design and testing of experimental free-piston cryogenic expander." Thesis, Massachusetts Institute of Technology, 1999. http://hdl.handle.net/1721.1/80237.
Повний текст джерелаChiu, Yuen-Yuen. "Experimental and theoretical analysis of free radical crosslinking polymerizations /." The Ohio State University, 1994. http://rave.ohiolink.edu/etdc/view?acc_num=osu148785841798507.
Повний текст джерелаLatham, Andrew James. "Indirect Compatibilism." Thesis, The University of Sydney, 2019. http://hdl.handle.net/2123/20440.
Повний текст джерелаMaroju, Praveen Kumar [Verfasser], and Giuseppe [Akademischer Betreuer] Sansone. "Attosecond pulse shaping at a seeded free-electron laser : : towards attosecond time-resolved experiments at the free-electron lasers." Freiburg : Universität, 2021. http://d-nb.info/1239556527/34.
Повний текст джерелаSumantran, V. "The effect of free stream disturbances and control surface deflections on the performance of the Wortmann airfoil at low Reynolds numbers." Diss., Virginia Polytechnic Institute and State University, 1985. http://hdl.handle.net/10919/49921.
Повний текст джерелаPh. D.
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González, Guerrero Ana Belén. "Bimodal waveguide interferometer device based on silicon photonics technology for label-free and high sensitive biosensing." Doctoral thesis, Universitat Autònoma de Barcelona, 2012. http://hdl.handle.net/10803/107886.
Повний текст джерелаOptical biosensor devices based on evanescent wave detection could overcome the limitations of conventional diagnostic tests (expensive and time-consuming) due to the possibility of carrying out the detection in real-time and using a label-free scheme. Among the different optical transducers, interferometric devices have evidenced the best limit of detection (LOD) for refractive index changes of bulk solutions (10-7-10-8 Refractive Index Units, RIU) and for surface sensing (in the pg/ml range) and a wider linear range. However, usual interferometric transducers (Mach-Zehnder or Young interferometers) employ the Y-junction to split or recombine light, a drawback for the coherence and performance of the device due to standard tolerances of microfabrication techniques. To overcome these problems, we have developed a simple configuration based on a single straight waveguide where two modes of the light of the same polarization are interfering between them. This simple approach avoids the complexity of the usual interferometric transducers and as a consequence, more reliable and reproducible biosensors can be obtained. This thesis is focused on the development and characterization of a new photonic transducer, the Bimodal Waveguide device (BiMW), for label- free and high sensitive biosensing. To achieve this, the following steps have been pursued: 1. Design, fabrication, and optical characterization of an optical transducer operating by two-mode interference principle. 2. Development and optimization of biofunctionalization strategies on the transducer surface using silanization techniques. 3. Study of the applicability of the biosensor with the demonstration of bioanalytical diagnosis of relevant problems. The transducers are fabricated at wafer level in Clean Room facilities, which warrants a cost-effective and mass-production of the sensor chips. The device is highly sensitive to small changes in the refractive index occurring on the sensor area, leading to a detection limit of 2.5×10-7 RIU for bulk changes in refractive index solutions. The biofunctionalization of the sensor area is one of the most crucial aspects of this work. Optimized functionalization procedures have been achieved, which has been employed to immobilize different types of bioreceptors (DNA strands, proteins, and antibodies) on the surface. The optimized protocols have been used for the demonstration of different bioapplications such as the detection of hormones, bacteria, or complementary DNA sequences. The results presented in this work have highlighted the superior performance of this device in comparison with conventional diagnostics tests due to: i) the possibility of monitoring biomolecular interactions in real-time and by using a label-free scheme which reduce the time and cost of the assay , ii) the fabrication of the device using standard silicon microelectronics technology opening the possibility for mass-production, iii) the high sensitivity demonstrated for the different bioapplications assessed achieving detection limits in the pg/ml range (femtomolar), and iv) the device meets the specific requirements to be miniaturized and integrated in a multiplexed platform. This work opens the door for the integration of this transducer in a lab-on-a-chip device, including the in-coupling/out-coupling of light, a system able to modulate the interferometric signal, and the incorporation of microfluidics channels for multiplexing. Each of these subjects adds a great complexity to the final device, and must be independently developed and optimized in order to be successfully integrated at the final lab-on-a-chip biosensor. Finally, the possibility to detect simultaneously multiple analytes will involve further efforts in developing new optical in and outcoupling as well as new biofunctionalization strategies.
Heintze, Olaf. "A Computationally Efficient Free Energy Model for Shape Memory Alloys - Experiments and Theory." NCSU, 2004. http://www.lib.ncsu.edu/theses/available/etd-12172004-221828/.
Повний текст джерелаDoshi, Urmi R. "One-dimensional free energy surface models of protein folding: connecting theory and experiments." College Park, Md. : University of Maryland, 2007. http://hdl.handle.net/1903/6875.
Повний текст джерелаThesis research directed by: Biochemistry. Title from t.p. of PDF. Includes bibliographical references. Published by UMI Dissertation Services, Ann Arbor, Mich. Also available in paper.
Melendez, Ramirez Antonio Jose Beckermann Christoph. "Experimental investigation of free dendritic growth of succinonitrile-acetone alloys." [Iowa City, Iowa] : University of Iowa, 2009. http://ir.uiowa.edu/etd/407.
Повний текст джерелаPedley, Tony J. "An experimental investigation into coherent structures in free shear flows." Thesis, University of Leeds, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.277480.
Повний текст джерелаAllison, Mark. "An experimental and computational investigation of transition metal-free reactions." Thesis, University of Strathclyde, 2018. http://digitool.lib.strath.ac.uk:80/R/?func=dbin-jump-full&object_id=30916.
Повний текст джерелаZeng, Lingping. "Experimental and numerical investigation of phonon mean free path distribution." Thesis, Massachusetts Institute of Technology, 2013. http://hdl.handle.net/1721.1/79267.
Повний текст джерелаCataloged from PDF version of thesis.
Includes bibliographical references (p. 99-107).
Knowledge of phonon mean free path (MFP) distribution is critically important to engineering size effects. Phenomenological models of phonon relaxation times can give us some sense about the mean free path distribution, but they are not accurate. Further improvement of thermoelectric performance requires the phonon MFP to be known. In this thesis, we improve recently developed thermal conductivity spectroscopy technique to experimentally measure MFPs using ultrafast transient thermoreflectance method. By optically heating lithographically patterned metallic nanodot arrays, we are able to probe heat transfer at length scales down to 100 nm, far below the diffraction limit for visible light. We demonstrate the new implementation by measuring MFPs in sapphire at room temperature. A multidimensional transport model based on the grey phonon Boltzmann equation is developed and solved to study the quasi-ballistic transport occurring in the spectroscopy experiments. To account for the nonlinear dispersion relation, we present a variance reduced Monte Carlo scheme to solve the full Boltzmann transport equation and compare the simulation results with experimental data on silicon.
by Lingping Zeng.
S.M.
Melendez, Ramirez Antonio Jose. "Experimental investigation of free dendritic growth of succinonitrile-acetone alloys." Diss., University of Iowa, 2009. https://ir.uiowa.edu/etd/407.
Повний текст джерелаFlores, Michel Luz. "Rationalisation and design of molecular recognition : computational and experimental approaches." Thesis, University of Manchester, 2013. https://www.research.manchester.ac.uk/portal/en/theses/rationalisation-and-design-of-molecular-recognition-computational-and-experimental-approaches(0bcfe73a-bee9-45db-aa43-90b742ccb9fd).html.
Повний текст джерелаLamounier, Lucia. "Between slavery and free labour : experiments with free labour and patterns of slave emancipation in Brazil and Cuba c.1830-1888." Thesis, London School of Economics and Political Science (University of London), 1993. http://etheses.lse.ac.uk/108/.
Повний текст джерелаUmirova, Arailym. "Experimental Design for Ceramic Panel Production." Thesis, Luleå tekniska universitet, Materialvetenskap, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-85954.
Повний текст джерелаWünscher, Michael [Verfasser], and Eckehard [Akademischer Betreuer] Schöll. "Crucible-free Crystal Growth of Germanium - Experiments and Simulations / Michael Wünscher. Betreuer: Eckehard Schöll." Berlin : Universitätsbibliothek der Technischen Universität Berlin, 2011. http://d-nb.info/1017154147/34.
Повний текст джерелаBateman, Brett E. "Experiments on laser beam jitter control with applications to a shipboard free electron laser." Thesis, Monterey, Calif. : Naval Postgraduate School, 2007. http://bosun.nps.edu/uhtbin/hyperion-image.exe/07Dec%5FBateman.pdf.
Повний текст джерелаThesis Advisor(s): Baker, Steven R. ; Agrawal, Brij N. "December 2007." Description based on title screen as viewed on January 18, 2008. Includes bibliographical references (p. 81-82). Also available in print.
Djouadi, Manil. "Wire Boom Deployment and Attitude of Spinning Free Falling Units in Sounding Rocket Experiments." Thesis, KTH, Skolan för elektroteknik och datavetenskap (EECS), 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-235747.
Повний текст джерелаUppskjutningen för SPIDER experimentet skedde i februari 2016. Mätningar från en Aurora/Norrsken/Polarsken samlades. Det är troligt att få en bättre förståelse för instabiliteter som förekommer i den, särskilt av Farley-Buneman instabilitet. För att kunna utnyttja denna mätning korrekt måste inställningen hos de frit-fallande detektorer kallades FFU -Free-Falling Units på engelska- som samlar mätningarna vara välkända. Men återställningsprocessen görs svårare genom en extra wobblingrörelse som gäller för enheterna. Genom att använda rå data från GPS-satelliter och data från tröghetsmätaren och genom att känna till magnetfältets beteende utanför elektrojet kan inställningen hos ett FFU avgöras med en acceptabel nivå av precision. Detta kan sträcka sig till andra veten- skapliga projekt och erbjuda ett billigt alternativ till användningen av stjärn- spårare. Ett nytt flyg till 2019 är planerat för SPIDER-experimentet. Förbättringar av boom-implementeringsenhet -Boom Deployment Unit (BDU) på engelska- un- dersöks så att dess mekanism är robustare, så väl som enklare och snabbare att montera. Att få en bättre förståelse av den genom funktionell analys har hjälpt till att hitta riktningar för förbättringar på pinfrigörningsmekanismen, på lös- ningarna för att säkerställa rotationsstyrningen, avskärmning från vibrationer under uppskjutningen och på anslutningarna mellan mätproberna och elektron- iken för att bearbeta mätförvärv. Ett BDU inklusive de föreslagna ändringarna bör monteras och testas med tanke på att den nya designen ingår i omflyttningen
Allen, Lucy Ruth. "Free energy landscapes of proteins : combining experimental data with numerical simulation." Thesis, University of Leeds, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.507863.
Повний текст джерелаNg, Edwin S. B. Massachusetts Institute of Technology. "Experimental designs for efficient free-space multi-spatial-mode optical communication." Thesis, Massachusetts Institute of Technology, 2013. http://hdl.handle.net/1721.1/83831.
Повний текст джерелаCataloged from PDF version of thesis.
Includes bibliographical references (page 77).
In optical communications, two measures of efficiency are commonly at odds. The first is the photon information efficiency (in bits/photon) which measures the information that each detected photon conveys; the second is the spectral efficiency (in bits/s/Hz) which measures the bit rate achieved under limited bandwidth. One interesting communication protocol which can simultaneously obtain high information efficiency without sacrificing spectral efficiency, however, is spatial pulse-position- modulation (spatial-PPM), in which information is encoded into the spatial modes of light and sent through free space between transmitter and receiver. This thesis aims to lay the groundwork for an experimental design to achieve efficient spatial-PPM free-space optical communication using 1550 nm light at the single photon level. We focus on presenting and evaluating a transmitter-receiver design by giving a precise characterization of its operation, properties, and limitations.
by Edwin Ng.
S.B.
Wen, Yang. "Experimental and numerical investigations of rotating flows with deformable free surface." Thesis, Sorbonne université, 2018. http://www.theses.fr/2018SORUS455.
Повний текст джерелаThis work is a contribution to the understanding of instabilities in rotating flows with deformable free surface. The configuration under study is a cylindrical container partially filled with water or water-glycerin mixture and the rotation is driven by a disk located at the bottom. In such flow, several families of instability patterns can be triggered depending on the flow parameters (Froude and Reynolds numbers and aspect ratio). As a mean of investigation, steady and unsteady simulations are conducted using the two in-house codes ROSE and Sunfluidh, in conjunction with experiments. The novelty lies in two-phase numerical simulations with strongly deformed interface and large density ratio between the phases, in accurate surface height and Laser-Doppler Velocimetry measurements, and in cross validations between numerical and experimental techniques. The base flow is first carefully described. Axisymmetric steady solutions show the structure of the rotating flow: a central solid body rotation and a toroidal flow cell located at the periphery, the intensity and geometry of which are characterized. Focusing on Reynolds numbers large enough so that boundary layers form at solid walls, two additional layers are described: an internal layer at the edge of the central region and a layer under the free surface never reported before. This flow structure is shown to be robust as Froude number is varied. Three-dimensional unsteady simulations reveal that the time and space averaged flow shows many similarities with steady axisymmetric solutions and that the surface remains almost flat even though three-dimensional large structure instabilities have developed in the bulk. Through this full numerical approach corroborated by velocity measurements, the flow structure is thus clarified and compared to the simplified models used in the literature. The transient spin-up dynamics of a fluid from rest are also investigated for two configurations, namely Newton's bucket and the bottom-driven flow. Experimental surface height and velocity evolution are found in very good agreement with axisymmetric unsteady simulations. These results are meant to serve as a benchmark for unsteady rotating two-phase flow simulations. Large amplitude three-dimensional surface deformation waves known as rotating polygons are eventually studied experimentally. These patterns are usually observed at very large Reynolds number. Conducting investigations in more viscous flow regimes, the link between bulk and surface polygon instabilities is tentatively elucidated. Through a spectral analysis of surface deformation and velocity measurements, the phase-velocity to disk speed ratio is found to be close to 1/3 for rotating polygons whereas it is 2/3 for the bulk instability
Garcia, de la Cruz Lopez Juan Marcos. "Experimental study of free surface mixing in vortical and chaotic flows." Thesis, Imperial College London, 2011. http://hdl.handle.net/10044/1/9007.
Повний текст джерелаBarbosa, Michele. "Uma abordagem para análise de dados com medidas repetidas utilizando modelos lineares mistos." Universidade de São Paulo, 2009. http://www.teses.usp.br/teses/disponiveis/11/11134/tde-14102009-084734/.
Повний текст джерелаIn this present work was proposed a simple approach to know how to choose a linear mixed model that can be adjustable to data with repeated measures. The construction of the model involved the choice of random effects, the fixed effects and covariance structure, using graphical and analytical techniques. The use of the Likelihood Ratio Test and the Akaike Information Criteria - AIC and Schwarz - BIC can lead to different choices of the structure of covariance, which may influence the results of inferences made about the parameters of fixed effects. The approach was applied to data sets that was resulted from farming studies using the software R. Comparisons of the results of models implemented were made with the proc mixed of SAS and with the function lme() of R, noting the advantages and limitations of these two softwares.
Mahé, Jérôme. "Far infrared/Tera-Hertz spectroscopy in the gas phase : experiments and theory." Thesis, Université Paris-Saclay (ComUE), 2017. http://www.theses.fr/2017SACLE043/document.
Повний текст джерелаInfrared spectroscopy allows the assignment of three dimensional structures of molecular systems, by comparing experimental and theoretical spectra. Our investigations take place in the gas phase, where molecules and clusters are free of intermolecular interactions.Our work combines experimental IR-UV ion dip spectroscopy and theoretical DFT-MD anharmonic spectroscopy. The infrared spectrum is calculated for low energy 3Dstructures and the best match between theory and experiment provides the information about the structure present in the experimental conditions.We demonstrate for several systems that far infrared/THz spectroscopy (<800 cm-1, <24THz) allows conformational assignment without ambiguities, contrary to the more traditional 1000-4000 cm-1 range. Systems investigated here are dipeptides, a β-sheet model, phenol derivatives (also complexe dwith water molecules), DNA base pairs, all these structures being built on intra-/intermolecular hydrogen bonds
Seggebrock, Thorben. "Conceptual design of a laser-plasma accelerator driven free-electron laser demonstration experiment." Diss., Ludwig-Maximilians-Universität München, 2015. http://nbn-resolving.de/urn:nbn:de:bvb:19-184314.
Повний текст джерелаBharathula, Ashwini. "Experimental and Computational Investigations of Strain Localization in Metallic Glasses." The Ohio State University, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=osu1282158393.
Повний текст джерелаWohaieb, Saleh A. "Oxygen free radical scavenging systems in clinical and experimental (chemical and spontaneous) diabetes mellitus." Thesis, University of British Columbia, 1987. http://hdl.handle.net/2429/27567.
Повний текст джерелаMedicine, Faculty of
Anesthesiology, Pharmacology and Therapeutics, Department of
Graduate
Zambrano, Cruzatty Luis Eduardo. "Advancements for the Numerical Simulation of Free Fall Penetrometers and the Analysis of Wind Erosion of Sands." Diss., Virginia Tech, 2021. http://hdl.handle.net/10919/104861.
Повний текст джерелаDoctor of Philosophy
With global warming and climate change, it is expected that the frequency and intensity of storms will increase. This increment will put extra stress on coastal sediments such as beach sand and coastal dunes, making them prone to erosion. Coastal dunes lose their ability to withstand storms as they erode, potentially making coastal flooding more frequent. In light of this, all stakeholders involved in the protection against coastal disasters must have the tools to predict, prepare for, and mitigate for situations like the ones stated above. An essential aspect of the prediction component is dependent on a successful sediment characterization, for example, determining how much wind the sand can withstand before it erodes. Free-fall penetrometers (FFP) are devices designed to conduct the characterization mentioned above. However, the procedures used to perform this characterization are mainly based on empirical or semi-empirical expressions. Computer models, capable of simulating the physics behind FFP testing, can bring more insight into the process of interaction between FFP devices, sands, and water and can be the basis to improve the characterization methods. The latter results can be utilized for instance to predict wind erosion, including several properties of the sand, such as its mineralogy and shape. This study contributes to developing the computer simulations of FFP deployment and the wind erosion prediction models. Eventually, these developments can help engineers and coastal managers to anticipate and prepare for more frequent coastal hazards.
Badam, Vijay Kumar. "Experimental and theoretical investigations of the evaporation of fluids from free surfaces." [S.l.] : [s.n.], 2007. http://deposit.ddb.de/cgi-bin/dokserv?idn=984903402.
Повний текст джерелаRana, Md Ruhul Amin. "Numerical and experimental study of orientation dependency of free convection heat sinks." Thesis, University of British Columbia, 2015. http://hdl.handle.net/2429/52716.
Повний текст джерелаApplied Science, Faculty of
Engineering, School of (Okanagan)
Graduate
Donnelly, Martin John. "An Experimental Investigation of Spanwise Vortices Interacting with Solid and Free Surfaces." Diss., Virginia Tech, 2006. http://hdl.handle.net/10919/28130.
Повний текст джерелаPh. D.
Leonard, James W. Jr. "Replacing indirect manual assistive solutions with hands-free, direct selection." Wright State University / OhioLINK, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=wright1309282777.
Повний текст джерела