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Dissertations / Theses on the topic 'SRFT'

Author: Grafiati

Published: 11 September 2023

Last updated: 25 July 2025

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1

Smith, Gemma Ann. "Regulation of SRF activity." Thesis, University College London (University of London), 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.404483.

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2

Matsushima, Aki. "Transverse laser cooling of SrF." Thesis, Imperial College London, 2014. http://hdl.handle.net/10044/1/17839.

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This thesis discusses an experiment, which has demonstrated transverse laser cooling of a pulsed supersonic beam of strontium monofluoride (SrF) molecules. Producing ultracold molecules is important because they could advance many fields including many-body physics, quantum chemistry and precision measurements to explore fundamental forces in nature. Direct laser cooling of molecules is a new and promising way to produce molecules with temperatures in the sub-millikelvin range. In the experiment, SrF molecules produced from a pulsed supersonic source were cooled in the transverse direction usi

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3

Vennekate, Hannes. "Emittance Compensation for SRF Photoinjectors." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2017. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-229164.

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The advantages of contemporary particle injectors are high bunch charges and good beam quality in the case of normal conducting RF guns and increased repetition rates in the one of DC injectors. The technological edge of the concept of superconducting radio frequency injectors is to combine the strengths of both these sides. As many future accelerator concepts, such as energy recovery linacs, high power free electron lasers and certain collider designs, demand particle sources with high bunch charges and high repetition rates combined, applying the superconductivity of the accelerator modules

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4

Zaromytidou, Alexia Ileana. "Molecular study of SRF-cofactor interactions." Thesis, University College London (University of London), 2008. http://discovery.ucl.ac.uk/1445165/.

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Serum Response Factor regulates a large array of genes involved in diverse processes including cell proliferation, muscle differentiation and development, and cytoskeletal processes such as cell migration and adhesion. The specificity and versatility of the SRF responses is achieved by combinatorial interactions with accessory factors. SRF binds to the CC(A/T)2A(A/T)3GG CArG box consensus sequence within the promoters of its target genes and acts as a docking platform for diverse signal regulated and cell- type specific cofactors to elicit their distinct responses. In fibroblasts two pathways

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5

Valente-Feliciano, Anne-Marie. "Development of SRF monolayer/multilayer thin film materials to increase the performance of SRF accelerating structures beyond bulk Nb." Thesis, Paris 11, 2014. http://www.theses.fr/2014PA112254/document.

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La réduction du cout de construction et d’exploitation des futurs accélérateurs d particules, a grande et petite échelles, dépend du développement de nouveaux matériaux pour les surfaces actives des structures supraconductrices en radiofréquence (SRF). Les propriétés SRF sont essentiellement un phénomène de surface vu que la profondeur de pénétration (profondeur de pénétration de London, λ) des micro-ondes (RF) est typiquement de l’ordre de 20 à 400 nm en fonction du matériau. Lorsque les procédés de préparation de surface sont optimises, la limite fondamentale du champ RF que les surfaces SRF

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6

Kolb, Philipp Ulrich. "The TRIUMF nine-cell SRF cavity for ARIEL." Thesis, University of British Columbia, 2016. http://hdl.handle.net/2429/57725.

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Modern physics research relies on particle accelerators and available beam time is a very limited resource. The ARIEL eLINAC will strengthen the rare isotope program at TRIUMF by providing an alternative way to create rare isotope beams (RIB). A possible way to add additional use to this machine is to create a return beam line and use the beam to excite a free electron laser (FEL). The remaining beam can be used to drive fields in the SRF cavities to reduce the required RF power. One limitation of these energy recovery LINACs (ERL) is beam-break up. Higher order modes (HOM), especially dipole

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7

Guettler, Sebastian. "Regulation of the SRF cofactor MAL by actin." Thesis, University College London (University of London), 2007. http://discovery.ucl.ac.uk/1445537/.

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Serum Response Factor (SRF) is controlled by actin dynamics at many of its target genes: Rho-induced depletion of G-actin is sensed by MAL, a member of the myocardin family of SRF coactivators. MAL binds G-actin via its N-terminus, the "RPEL domain", containing three RPEL motifs. MAL rapidly circulates between nucleus and cytoplasm in resting NIH3T3 fibroblasts. It accumulates in the nucleus and activates SRF upon serum stimulation, which alters interactions between G-actin and the RPEL domain. In contrast, myocardin (MC) itself is constitutively nuclear and active when expressed in fibroblast

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8

Xiao, Binping. "Surface Impedance of Superconducting Radio Frequency (SRF) Materials." W&M ScholarWorks, 2012. https://scholarworks.wm.edu/etd/1539623605.

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Superconducting radio frequency (SRF) technology is widely adopted in particle accelerators. There remain many open questions, however, in developing a systematic understanding of the fundamental behavior of SRF materials, including niobium treated in different ways and various other bulk/thin film materials that are fabricated with different methods under assorted conditions. A facility that can measure the SRF properties of small samples in a range of 2∼40 K temperature is needed in order to fully answer these questions. The Jefferson Lab surface impedance characterization (SIC) system has b

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9

Gualdrini, F. "Mechanisms of transcriptional regulation by SRF co-factors." Thesis, University College London (University of London), 2015. http://discovery.ucl.ac.uk/1460723/.

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Serum response factor (SRF) controls gene activation in response to changes in actin dynamics and mitogen-activated protein kinases. SRF has low intrinsic transcriptional activity and requires the recruitment of one of two families of co-activators: the MRTFs (myocardin-related transcription factors) and the TCFs (ternary complex factors). MRTFs are actin-binding proteins. Disruption of the actin-MRTF interaction is sufficient to induce MRTF nuclear accumulation and transcriptional activation. The TCF family are specifically activated by MAPK signalling. This thesis aims to elucidate how the S

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10

Fortier-Topping, Hugo. "Conception d'une chambre de combustion pour la microturbine à gaz SRGT-2." Mémoire, Université de Sherbrooke, 2014. http://hdl.handle.net/11143/5417.

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Dans un contexte mondial où les ressources énergétiques commencent à se faire rares, beaucoup de recherches se font sur l’amélioration de l’efficacité thermique et de la densité de puissance des sources d’énergie existantes. Ainsi, un projet de développement d’une microturbine à gaz avec une architecture de nouveau genre permettant d’augmenter la densité de puissance tout en réduisant les coûts a vu le jour. La recherche proposée dans le présent document se concentre sur la conception et la caractérisation d’une chambre de combustion et d’un banc d’essai pour la turbine SRGT-2. Une chamb

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11

Jones, F. W. "Evidence for dissociable learning processes from the SRT task." Thesis, University of Cambridge, 2001. http://create.canterbury.ac.uk/11341/.

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12

Greaney, Peter. "Regulation of cell survival by caspase-mediated SRF cleavage." Thesis, University of Nottingham, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.403410.

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13

Gustafsson, Helena, and Anna Nilsson. "Avskaffandet av revisionsplikten : en studie av SRF och Skatteverket." Thesis, Högskolan i Borås, Institutionen Handels- och IT-högskolan, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:hb:diva-19773.

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Bakgrund och problem: Idag förs det en diskussion om avskaffandet avrevisionsplikten. Den 7 september 2006 bestämde regeringen att reglerna om revision försmå bolag skulle ses över och granskas genom en utredning. Idag (2009) är företagenskyldiga att använda sig av en revisor där hon/han kontrollerar styrelsens och denverkställande direktörens förvaltning. Avskaffandet av revisionsplikten skulle innebäraatt 96 procent av Sveriges företag skulle slippa plikten att ha en revisor. Ett avskaffandekommer att beröra olika parter exempelvis företag, revisorer, redovisningskonsulter,Skatteverket, kund

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Faltová, Karolína. "Název práce: Je srst bobra evropského (Castor fiber) vhodným indikátor intoxikace rizikovými prvky?" Master's thesis, Česká zemědělská univerzita v Praze, 2016. http://www.nusl.cz/ntk/nusl-260339.

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This thesis deals with the burden of European beaver (Castor fiber) populations with risk elements in three areas of the Czech Republic and one area in Slovakia. There were investigated concentrations of heavy metals (Cd, Zn, Fe, Cu, Pb and As) in the kidneys, livers, lungs, hearts, muscles and fur of 19 found dead beaver individuals. Furthermore, their food was analysed to determine the contamination of their areas of origin and discover, which organ reflects the observed concentrations of Cd the best. The main aim of the study was to determine whether the analysis of hair could be used as a

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15

Schmidt, Larisa. "Synthese und Charakterisierung von nano-SrF2 und -YbF3 für Anwendungen in der Dentalmedizin." Doctoral thesis, Humboldt-Universität zu Berlin, Mathematisch-Naturwissenschaftliche Fakultät, 2015. http://dx.doi.org/10.18452/17272.

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Das Ziel der Promotionsarbeit ist es optisch transparente, nanoskalige Strontiumfluorid- und Ytterbiumfluorid-Sole hoher Konzentration für mögliche Anwendung in der Dentalmedizin zu synthetisieren. Über die fluorolytische Sol-Gel-Synthese ist es gelungen nanoskalige MFn-Sole (M=Sr, Yb) erfolgreich herzustellen. Die Umsetzung der Metallpräkursoren mit alkoholischer HF-Lösung im organischen Lösungsmittel führt zu transparenten, niedrig viskosen Solen. Mittels DLS, XRD und TEM wurden die Sole hinsichtlich ihrer Partikelgröße und ihres Alterungsverhaltens untersucht. Mittels WAXS-Messungen wurde d

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16

Parlakian, Ara. "Rôle du facteur de transcription SRF dans le système cardiovasculaire." Paris 7, 2004. http://www.theses.fr/2004PA077137.

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17

Tian, Hui. "Surface study of niobium for superconducting radio frequency (SRF) accelerators." W&M ScholarWorks, 2008. https://scholarworks.wm.edu/etd/1539623534.

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Niobium rf superconductivity is a near-surface phenomenon because of the shallow rf penetration depth. Accordingly, the performance of Nb SRF accelerator cavities is strongly impacted by the topmost few nanometers interior surface, especially as impacted by the final surface conditioning treatments.;Surface topography impacts performance through local loss of superconductivit caused by intrusion of the rf magnetic field, which is enhanced at sharp protrusions. "Sharpness" comprises both vertical and lateral aspects, requiring development a new characterization approach beyond the familiar roug

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18

Völker, Jens. "Development of a compact test facility for SRF Photoelectron injectors." Doctoral thesis, Humboldt-Universität zu Berlin, 2018. http://dx.doi.org/10.18452/19322.

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SHF Photoelektroneninjektoren sind eine vielversprechende Elektronquelle für hochbrillante Teichenbeschleuniger mit hohem mittlerem Strom und kurzen Teilchenpulsen, wie FELs und ERLs. Für das ERL Projekt bERLinPro wurde einer unabhängige Testanlage GunLab entwickelt um die Leistungsfähigkeit der Injektoren und die Strahlparameter zu überprüfen. Darüber hinaus können neue Komponenten zur Strahldiagnose getestet werden. Die Hauptaufgabe von GunLab ist die Beschreibung des vollständigen sechsdimensionalen Phasenraums der Elektronen in Abhängigkeit aller Injektorparameter. Die Anlage besteht aus e

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19

Recari, Ansa Javier. "Gasification of biomass and solid recovered fuels (SRFs) for the synthesis of liquid fuels." Doctoral thesis, Universitat Rovira i Virgili, 2017. http://hdl.handle.net/10803/450856.

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La gasificació és una tecnologia prometedora per l’aprofitament energètic de biomassa i residus, ja que permet convertir els combustibles sòlids en un gas de síntesi (syngas) amb diverses aplicacions. No obstant això, algunes limitacions encara impedeixen la completa implementació d’aquesta tecnologia a escala industrial, en particular per a la producció de combustibles líquids a partir del procés Fischer-Tropsch (FT). Els principals inconvenients estan relacionats amb la qualitat del syngas, per exemple una baixa relació H2/CO i la presència d’impureses (tar i contaminants menors), i depenen

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20

Vézina, Gabriel. "Aérodynamique d'une turbomachine à architecture concentrique de type SRGT (Supersonic RIM-ROTOR gaz turbine)." Mémoire, Université de Sherbrooke, 2014. http://hdl.handle.net/11143/5419.

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Le groupe de recherche CAMUS de l'Université de Sherbrooke a conceptualisé et breveté en 2011 une nouvelle architecture de turbine à gaz nommé SRGT (Supersonic Rim-Rotor Gas Turbine). Aucune démonstration expérimentale n’a encore permis d’évaluer ses performances. Ce projet de maitrise consiste donc à l’analyse de la dynamique des gaz d’une turbomachine de type SRGT afin d’évaluer la possibilité de générer de la puissance nette positive en régime permanent. L’objectif de ce projet de recherche est de concevoir les composantes aérodynamiques d’une turbine à gaz SRGT en mode supersonique et de c

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21

Wilde, Stuart. "Development of superconducting thin films for use in SRF cavity applications." Thesis, Loughborough University, 2017. https://dspace.lboro.ac.uk/2134/34659.

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Superconducting thin films are a possible alternative to bulk niobium for superconducting radio frequency cavity applications. Thin film cavities have produced larger Q0 than bulk niobium at low accelerating voltages [1], are less susceptible to external magnetic fields and therefore require less magnetic shielding than bulk niobium cavities [2] and can benefit from substrates which conduct heat more effectively than bulk niobium [3]. The major drawback for current thin film cavity technology is the large Q slope which is observed above accelerating gradients of 6 7 MV/m. The mechanism for the

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22

Zhao, Liang. "Surface polishing of niobium for superconducting radio frequency (SRF) cavity application." W&M ScholarWorks, 2015. https://scholarworks.wm.edu/etd/1563899057.

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Niobium cavities are important components in modern particle accelerators based on superconducting radio frequency (SRF) technology. The interior of SRF cavities are cleaned and polished in order to produce high accelerating field and low power dissipation on the cavity wall. Current polishing methods, buffered chemical polishing (BCP) and electropolishing (EP), have their advantages and limitations. We seek to improve current methods and explore laser polishing (LP) as a greener alternative of chemical methods. The topography and removal rate of BCP at different conditions (duration, temperat

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23

Juntong, Nawin. "Investigation of optimised electromagnetic fields in SRF cavities for the ILC." Thesis, University of Manchester, 2012. https://www.research.manchester.ac.uk/portal/en/theses/investigation-of-optimised-electromagnetic-fields-in-srf-cavities-for-the-ilc(d0ddfc7c-c72e-4c68-810a-8cecacb20407).html.

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The International Linear Collider (ILC) project aims at colliding electrons and positrons at an initial centre of mass energy of 500 GeV with high luminosity, and thus will allow scientists to probe new energy regimes. A general consensus within the accelerator physics and particle physics community has been made to utilise superconducting technology rather than normal conducting technology. A superconducting radio frequency (SRF) cavity will be used to accelerate bunches of particles to the design energy before delivering them to an interaction point. The major financial cost of the ILC lies

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24

Papaefthymiou, Aikaterini. "Role of the Srf transcription factor in adult muscle stem cells." Thesis, Sorbonne Paris Cité, 2016. http://www.theses.fr/2016USPCB120/document.

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Le muscle squelettique adulte est un tissu avec une grande plasticité étant donné qu’il adapte sa taille suite à la surcharge fonctionnelle et il régénère suite à une lésion. La base de cette plasticité est la myofibre et les cellules souches associées, les cellules satellites (CS). Suite aux stimuli, les CS sortent de la quiescence, elles s’activent, proliférent, s’engagent dans la voie myogénique et fusionnent entre elles ou bien avec la fibre pre-éxistante. Une partie des CS retourne à la quiescence afin de maintenir le « pool » de progéniteurs. Ce projet a pour objectif de mieux caractéris

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Blais, Mélody. "Apprentissage procédural moteur et mémoire procédurale dans le trouble développemental de la coordination : études comportementales, en électroencéphalographie et en imagerie par résonance magnétique." Thesis, Toulouse 3, 2018. http://www.theses.fr/2018TOU30061/document.

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Le Trouble Développemental de la Coordination (TDC) se caractérise par une altération des habiletés motrices. Si le déficit du contrôle moteur est univoque, les études testant un déficit d'apprentissage procédural moteur restent peu nombreuses et aboutissent à des résultats divergents. L'objectif principal de ce travail est de mettre en évidence les conditions dans lesquelles les enfants présentant un TDC manifestent ou non un déficit d'apprentissage procédural et de la mémoire procédurale. Quatre études ont été menées pour comparer l'apprentissage procédural moteur d'enfants présentant un TDC

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26

Grüner, T. "A functional RNAi screen for regulators of the serum response factor (SRF)." Thesis, University College London (University of London), 2009. http://discovery.ucl.ac.uk/19000/.

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Serum response factor (SRF) controls transcription of numerous immediate early and muscle-specific genes by its association with diverse co-activators. Amongst the SRF binding regulators are the TCF family proteins, including Elk1, SAP1 and SAP2 and the myocardin-related transcription factor (MRTF) family proteins including MAL and MAL16. Both types of transcriptional coactivators form a complex with SRF, which binds to serum response elements (SREs) upon serum activation by different upstream signal transduction pathways. While SRF activation by TCFs occur through the MAP kinase pathway, MRTF

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27

Lu, Pengnan. "Optimization of an SRF Gun for High Bunch Charge Applications at ELBE." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2017. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-223386.

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As a cutting-edge technology for photoinjectors, SRF guns are expected to provide CW electron beams with high bunch charge and low emittance, which is critical to the development of future FELs, ERLs and 4th/5th generation light sources. However, existing research has not explored the full potential of SRF guns as predicted by theory. Currently, the research activities at ELBE focus on solving technological challenges of a 3.5 cell SRF gun as well as applying it to high-bunch-charge experiments. This thesis aims to optimize the ELBE SRF gun and the relevant beam transport for future high-bunc

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Cunha, Gina Michelle Mac?do da. "Altera??es nas concentra??es das SRAT, conte?do de GSH e atividade da CAT em pacientes com esquistossomose aguda." Universidade Federal do Rio Grande do Norte, 2008. http://repositorio.ufrn.br:8080/jspui/handle/123456789/13435.

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Made available in DSpace on 2014-12-17T14:16:21Z (GMT). No. of bitstreams: 1 GinaMMC.pdf: 1174181 bytes, checksum: 37699ea266658587623a87a8fcd376f3 (MD5) Previous issue date: 2008-01-30<br>Schistosomiasis is an ancient disease caused by helminth Schistosoma mansoni and is a public health problem in Brazil. The granulomatous lesion, typical of the disease, associates itself with increase in the oxidative damage through the generation of free radicals. The aim of this work was to evaluate the occurrence of changes in parameters oxidant / antioxidant that are part of the human defense syst

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Tomáš, Petr. "Návrh a realizace senzorického systému pro mobilní robot s využitím frameworku ROS." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2014. http://www.nusl.cz/ntk/nusl-231374.

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The essence of this master thesis is design and implementation of sensor system based on robotic framework which is called ROS (Robot Operating System). The main task is to perform detailed analysis and test of capabilities of the framework with final implementation on specific robot application (sensor system) with following evaluation of applicability of the system in mobile robotics. As parallel aim is to create detailed general and practical guide for beginners with ROS which they are also beginners in Linux based operating systems.

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Bezerra, Claudiane dos Santos. "Estudo estrutural e óptico do CaF2, SrF2 e LiCaAlF6 produzidos pelo método hidrotermal assistido por micro-ondas." Universidade Federal de Sergipe, 2016. https://ri.ufs.br/handle/riufs/5266.

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Conselho Nacional de Pesquisa e Desenvolvimento Científico e Tecnológico - CNPq<br>Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - CAPES<br>In this work, CaF2, SrF2 and LiCaAlF6 pure and doped with rare earths were produced by microwave-assisted hydrothermal synthesis, which is a promising method to produce nanostructured powders in a simple, low cost and fast way. The samples were produced with or without using chelating agent and synthesized at low temperature, under pressure and a short time period. The crystalline phases of the samples were identified by X-ray diffraction

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Li, Shijie. "Mechanistic analysis of SRF and the myocardin family of coactivators during muscle development." Access to abstract only; dissertation is embargoed until after 12/20/2006, 2005. http://www4.utsouthwestern.edu/library/ETD/etdDetails.cfm?etdID=132.

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Kim, Hyun Sung. "Experimental and Numerical Analysis of Hydroformed Tubular Materials for Superconducting Radio Frequency (SRF) Cavities." The Ohio State University, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=osu1462533811.

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Al-Sayegh, Mohamed. "The role of SRF coactivators MRTF-A and MRTF-B in adipogenesis in vitro." Thesis, St George's, University of London, 2012. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.589960.

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This thesis comprises the work undertaken to investigate the role of the family of myocardin- related transcription factors, MRTF-A and MRTF-B, at regulating adipogenesis using the well- established in vitro model of 3T3-LI preadipocyte cells. Serum response factor (SRF) is an essential transcription factor that activates the expression of early immediate genes via recruitment of the family ternary complex factors or the transcription of cytoskeleton and muscle-specific genes via MRTF-A and MRTF-B recruitment. It has been shown that SRF depletion is sufficient to promote adipocyte differentiat

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Penkava, Josef [Verfasser], and Thomas [Akademischer Betreuer] Gudermann. "Charakterisierung von Myoferlin als neues MKL/SRF-abhängiges Zielgen / Josef Penkava ; Betreuer: Thomas Gudermann." München : Universitätsbibliothek der Ludwig-Maximilians-Universität, 2019. http://d-nb.info/1202011926/34.

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Stoll, Christian Philipp [Verfasser]. "Beam dynamical behaviour of the MESA SRF structures under recirculating operation / Christian Philipp Stoll." Mainz : Universitätsbibliothek der Johannes Gutenberg-Universität Mainz, 2020. http://d-nb.info/1224896653/34.

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Roach, Wiliam Michael. "Superconducting Thin Films for SRF Cavity Applications: A Route to Higher Field Gradient Linacs." W&M ScholarWorks, 2014. https://scholarworks.wm.edu/etd/1539623638.

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Many linear accelerator (linac) applications rely on the use of superconducting radio frequency (SRF) cavities. In order to overcome the current field gradient limits imposed by the use of bulk niobium, a model involving the deposition of alternating superconducting-insulating-superconducting (SIS) thin films onto the interior surface of SRF cavities has been proposed. Since SRF performance is a surface phenomenon, the critical surface of these cavities is less than 1 micron thick, thus enabling the use of thin films. Before such approach can successfully be implemented fundamental studies cor

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Neumann, Axel. "Compensating microphonics in SRF cavities to ensure beam stability for future free-electron-lasers." Doctoral thesis, Humboldt-Universität zu Berlin, Mathematisch-Naturwissenschaftliche Fakultät I, 2008. http://dx.doi.org/10.18452/15848.

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Laser-initiierte Freie Elektronen Laser (FEL) und Energy Recovery Linearbeschleuniger (ERL) erfordern höchste Stabilität der beschleunigten Elektronenpakete. Die zeitliche Streuung der Elektronenpakete und die mittlere Energieabweichung in den Undulatoren sollten in der Grössenordnung von Femtosekunden bzw. im Promille Bereich liegen. Das erfordert eine Regelung der Hochfrequenz (HF) Beschleunigungsfelder in den supraleitenden Hohlraumresonatoren bis zu 0.02° Phasen- und 1e-4 Amplitudengenauigkeit. Die TESLA Resonatoren des 2.3 GeV Linearbeschleunigers des geplanten BESSY-FEL sollen

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Panofski, Eva. "Beam Dynamics and Limits for High Brightness, High Average Current Superconducting Radiofrequency (SRF) Photoinjectors." Doctoral thesis, Humboldt-Universität zu Berlin, 2019. http://dx.doi.org/10.18452/19962.

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Zukünftige Beschleunigerprojekte und Nutzerexperimente erfordern für ihren Betrieb einen hochbrillanten Elektronenstrahl mit hohem mittlerem Strom. Eine Elektronenquelle mit dem Potential die Anforderungen erfüllen, ist ein supraleitender Hochfrequenz (SHF) Photoinjektor im Dauerstrichbetrieb. Die Strahldynamik eines solchen Photoinjektor Systems bestimmt die maximal zu erreichende Strahlbrillanz und wird ihrerseits von den Design und Betriebsparametern des Photoinjektors beeinflusst. Ziel ist immer die entscheidenden Design- und Betriebsparameter der Elektronenquelle hinsichtlich einer maxim

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Möller, K., A. Arnold, P. Lu, et al. "Emittance minimization at the ELBE superconducting electron gun." Forschungszentrum Dresden, 2014. http://nbn-resolving.de/urn:nbn:de:bsz:d120-qucosa-146950.

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The transverse emittance is one of the most important quantities which characterize the quality of an electron source. For high quality experiments low beam emittance is required. By means of theoretical considerations and simulation calculations we have studied how the emittance of the Rossendorf superconducting radio-frequency photoelectron source (SRF gun) can be minimized. It turned out that neither a solenoid magnet nor the effect of space charge forces is needed to create a pronounced emittance minimum. The minimum appears by just adjusting the starting phase of the electron bunch with r

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Senanayake, Pubudu Seewali. "Two-Colour Excitation of Impurity Trapped Excitons in Wide Bandgap Insulators." Thesis, University of Canterbury. Department of Physics and Astronomy, 2013. http://hdl.handle.net/10092/8710.

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Impurity trapped excitons (ITEs) occurring in divalent ytterbium doped calcium and strontium fluoride crystals have been investigated by exploiting the radically different radiative decay rates of the lowest exciton state and higher excited states, utilizing a novel two-colour transient photoluminescence enhancement experiment. The ITE energy levels have been directly measured with the observation of sharp transitions occurring from the changes of states of the localized hole and broad bands associated with changes of state of the delocalized electrons. The dynamic behaviour under excitation b

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Collard, Laura. "Rôle du facteur de transcription Srf au cours de l’atrophie du muscle squelettique et dans les cellules satellites." Thesis, Paris 5, 2013. http://www.theses.fr/2013PA05T068/document.

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Le muscle squelettique adulte est un tissu possédant la capacité fondamentale d’adapter sa taille à la demande fonctionnelle : il peut s’atrophier ou s’hypertrophier en réponse à une variation de la charge mécanique qui lui est appliquée. A l’heure actuelle, les facteurs impliqués dans la plasticité musculaire demeurent méconnus. D’une part, grâce à différents modèles d’atrophie musculaire, nous démontrons que le facteur de transcription Srf joue le rôle de médiateur de la mécano-transduction par la voie actine/Mrtfs/Srf. L’arrêt de l’activité mécanique provoque une accumulation nucléaire d’ac

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Swinarski, Marie. "PCP-driven cardiac remodeling couples changes in actomyosin tension with myocyte differentiation." Doctoral thesis, Humboldt-Universität zu Berlin, Lebenswissenschaftliche Fakultät, 2017. http://dx.doi.org/10.18452/17775.

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Im Zuge der frühen embryonalen Herzentwicklung entstehen ausgehend von einem einfachen Herzschlauch zwei deutlich voneinander getrennte Herzkammern. Die Kardiomyozyten des Atriums und Ventrikels weisen spezifische Eigenschaften auf, die sich morphologisch wie auch funktionell auf das Herz auswirken. Veränderungen in der Gewebsarchitektur werden hauptsächlich durch Zellinterkalation und kollektive Zellmigration erreicht. Viele Studien zeigen, dass der Wnt/PCP-Signalweg eine essentielle Rolle in der Regulation dieser Bewegungen einnimmt. Die Daten dieser Studie belegen, dass die nicht-kanonische

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Weißbach, Julia [Verfasser]. "The role of WH2-containing proteins in regulating Actin-MRTF-SRF-mediated transcription / Julia Weißbach." Halle, 2017. http://d-nb.info/1150704489/34.

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Yu, Wai Man C. Y. O. L. "Targeting the Myocardin-related transcription factor/serum response factor (MRTF/SRF) pathway in conjunctival fibrosis." Thesis, University College London (University of London), 2017. http://discovery.ucl.ac.uk/1559574/.

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Glaucoma is the leading cause of irreversible blindness and its prevalence is estimated to reach 79.6 million people by 2020. Wound contraction and scarring are the principal causes of blockage of aqueous flow at the drainage site in glaucoma filtration surgery. The cytotoxic antimetabolites, mitomycin-C and 5-fluorouracil, are widely used but have potentially blinding complications. There is thus a large unmet need for alternative agents with more targeted physiological effects and less cytotoxicity. The myocardin-related transcription factor/serum response factor (MRTF/SRF) pathway is a mast

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SOULEZ, MARIELLE. "Role des boites carg et de la proteine srf au cours de la differenciation myogenique." Paris 7, 1996. http://www.theses.fr/1996PA077137.

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Les sequences carg, de consensus cc(a/t)#6gg, sont presentes dans les regions regulatrices de genes de specificite differente des genes repondant precocement aux facteurs de croissance et des genes musculaires et sont impliquees dans l'activite specifique de ceux-ci. Le double jeu des sequences carg constitue un modele d'etude des mecanismes de regulation transcriptionnelle. L'activation transcriptionnelle en reponse a la stimulation par le serum a ete tres bien etudiee dans le cas du proto-oncogene c-fos. Celle-ci depend d'une sequence active en cis appelee sre (serum response element) qui co

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Huet, Alexis. "Interaction du facteur de transcription SRF avec l' ADN : études spectroscopiques des mécanismes de reconnaissance." Paris 7, 2005. http://www.theses.fr/2005PA077099.

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Keckert, Sebastian [Verfasser], and Jens [Gutachter] Knobloch. "Characterization of Nb3Sn and multilayer thin films for SRF applications / Sebastian Keckert ; Gutachter: Jens Knobloch." Siegen : Universitätsbibliothek der Universität Siegen, 2019. http://d-nb.info/1211819957/34.

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Vennekate, Hannes [Verfasser], Jochen [Akademischer Betreuer] Teichert, Ulrich [Gutachter] Schramm, and Arno [Gutachter] Straessner. "Emittance Compensation for SRF Photoinjectors / Hannes Vennekate ; Gutachter: Ulrich Schramm, Arno Straessner ; Betreuer: Jochen Teichert." Dresden : Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2017. http://d-nb.info/1140735241/34.

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Beringer, Douglas. "Thin Film Approaches to The Srf Cavity Problem: Fabrication and Characterization of Superconducting Thin Films." W&M ScholarWorks, 2016. https://scholarworks.wm.edu/etd/1499449840.

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Superconducting Radio Frequency (SRF) cavities are responsible for the acceleration of charged particles to relativistic velocities in most modern linear accelerators, such as those employed at high-energy research facilities like Thomas Jefferson National Laboratory’s CEBAF and the LHC at CERN. Recognizing SRF as primarily a surface phenomenon enables the possibility of applying thin films to the interior surface of SRF cavities, opening a formidable tool chest of opportunities by combining and designing materials that offer greater benefit. Thus, while improvements in radio frequency cavity

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Gilbert, Kristen Nicole. "Psychometrically Equivalent Bisyllabic Words for Speech Reception Threshold Testing in Mongolian." Diss., CLICK HERE for online access, 2009. http://contentdm.lib.byu.edu/ETD/image/etd2877.pdf.

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