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Dissertations / Theses on the topic 'Depolarization'

Author: Grafiati

Published: 4 June 2021

Last updated: 26 July 2025

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1

Cui, Jiajia. "Nonzero depolarization volumes in electromagnetic homogenization studies." Thesis, University of Edinburgh, 2007. http://hdl.handle.net/1842/2437.

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The work of this thesis concerns depolarization regions in the homogenization of random, particulate composites. In conventional approaches to homogenization, the depolarization dyadics which represent the component phase particles are provided by the singularity of the corresponding dyadic Green function. Thereby, the component particles are effectively treated as vanishingly small, point-like entities. However, through neglecting the spatial extent of the depolarization region, important information may be lost, particularly relating to coherent scattering losses. In this thesis, depolarizat

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2

Garrington, Simon T. "Asymmetric depolarization in powerful extragalactic radio sources." Thesis, University of Manchester, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.328338.

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3

Cooke, A. V. "Anode depolarization in the electrowinning of copper." Thesis, University of Cambridge, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.355256.

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4

Zhao, Shunli. "Thermally Stimulated Depolarization Current Evaluation of Molding Compounds." Thesis, University of North Texas, 2014. https://digital.library.unt.edu/ark:/67531/metadc500107/.

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TSDC (thermally stimulated depolarization current) is one of the most important and popular technique for investigating electret materials. TSDC technique can indicate the magnitude of polarization and depolarization, relaxation time, charge-storage, glass transition, and activation energy. To fully investigate polarization and relaxation for pure epoxy and filled epoxy materials, a TSDC system was built and verified by the research. The article describes the building processes and verification of the TSDC system. TSDC, TSPC, and TWC tests data for epoxy and filled epoxy samples are presented

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5

Woods, Sarah F. "Optical Depolarization from Turbulent Convective Flow: A Laboratory Study." Scholarly Repository, 2010. http://scholarlyrepository.miami.edu/oa_dissertations/362.

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In an effort to investigate the role of turbulence in near-forward scattering, laboratory measurements of scattering on turbulent flow were carried out in a Rayleigh-Bénard convective tank. Particle Image Velocimetry and profiling thermistor temperature measurements are used to characterize the turbulent flow through determination of the large scale flow features, turbulent kinetic energy dissipation rates, and thermal dissipation rates. Polarized diffractometer measurements allow for determination of the turbulence-induced depolarization rate, which is comparable to that observed with pola

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6

Stephan, Jonathan Verfasser], Christine R. [Akademischer Betreuer] Rose, and Dieter [Akademischer Betreuer] [Willbold. "Mechanisms of ammonium-induced depolarization of astrocytes in situ." Düsseldorf : Universitäts- und Landesbibliothek der Heinrich-Heine-Universität Düsseldorf, 2011. http://d-nb.info/1015363687/34.

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7

Liu, Guodong. "Regulation of alternative pre-mRNA splicing by depolarization/CaMKIV." the American Society for Biochemistry and Molecular Biology, 2009. http://hdl.handle.net/1993/14168.

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Alternative pre-mRNA splicing is often controlled by cell signals (1-3). Membrane depolarization/calcium (Ca2+) signaling controls alternative splicing of a group of genes in neurons and endocrine cells (4-9), with important implications in memory formation or secretion of hormones and neurotransmitters (10-15). However, the underlying molecular basis remains largely unknown. In rat GH3 pituitary cells, BK potassium channels control cellular electrical firing, which is critical for the release of growth hormone and prolactin. Inclusion of the STREX exon of the Slo1 gene encoding the channel α

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8

Huang, Jie. "Depolarization-dependent pro-survival signaling in spiral ganglion neurons." Diss., University of Iowa, 2007. https://ir.uiowa.edu/etd/214.

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Membrane depolarization is an effective neurotrophic stimulus, with its trophic effect on spiral ganglion neurons (SGNs) even surpassing that of neurotrophins. Thus, SGN cultures are a favorable system to investigate pro-survival signal transduction downstream of depolarization. Depolarization promotes SGN survival by recruiting three distinct kinase pathways: cyclic AMP-dependent protein kinase (PKA), Ca2+/calmodulin-dependent protein kinase II (CaMKII) and CaMKIV. CaMKIV mediates the pro-survival effect of depolarization by activating CREB in nucleus. However, the mechanisms by which PKA and

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9

Groß, Silke Martha. "Aerosol characterization by multi-wavelength Raman- and depolarization lidar observations." Diss., lmu, 2011. http://nbn-resolving.de/urn:nbn:de:bvb:19-130763.

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10

Lee, Ji-Ann. "Identification and characterization of depolarization-induced alternative splicing in neurons." Diss., Restricted to subscribing institutions, 2008. http://proquest.umi.com/pqdweb?did=1666117481&sid=12&Fmt=2&clientId=1564&RQT=309&VName=PQD.

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11

Kim, Arnold D. "Optical pulse propagation, diffusion and depolarization in discrete random media /." Thesis, Connect to this title online; UW restricted, 2000. http://hdl.handle.net/1773/6770.

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12

Cherry, Cortnie Lauren. "Mechanisms of Depolarization Induced Dendritic Growth of Drosophila Motor Neurons." Diss., The University of Arizona, 2006. http://hdl.handle.net/10150/195475.

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MECHANISMS OF DEPOLARIZATION INDUCED DENDRITIC GROWTH OF DROSOPHILA MOTOR NEURONS Cortnie Lauren Cherry The University of Arizona, 2006 Director: Richard B. Levine The study of the cellular mechanisms underlying dendritic growth contributes to our understanding of nervous system development, function and disease. Electrical activity is a fundamental property of neurons, and this property is utilized to influence the mechanisms involved in dendrite formation and maturation. Here we employ the Drosophila transgenic system to quantify dendritic growth of identified motor neurons using bo

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13

Horinaka, Jun-ichi. "Local Motion of Polymer Chains Studied by the Fluorescence Depolarization Method." Kyoto University, 1998. http://hdl.handle.net/2433/77939.

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14

Shi, Ling. "Effect of depolarization block by dopamine antagonist on self-stimulation in rats." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp04/mq24987.pdf.

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15

Golde, Jonas, Florian Tetschke, Robin Vosahlo, et al. "Assessment of occlusal enamel alterations utilizing depolarization imaging based on PS-OCT." Society of Photo-Optical Instrumentation Engineers, 2019. https://tud.qucosa.de/id/qucosa%3A36150.

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While dental caries represents the major chronic disease of humans, visual and tactile inspection are the methods of choice in daily dental practice. Several optical technologies have been developed in recent years for the purpose of dental examination, including near-infrared light transillumination as a promising tool for the supplementation and partial replacement of radiography. In case of occlusal alterations, the incidence of surface discolorations impedes the visual assessment, whereas tactile inspection appears to yield little diagnostic information or might be detrimental. Optical coh

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16

Lin, Hung Wen. "Saturated fatty acids released from the rat superior cervical ganglion upon depolarization /." Available to subscribers only, 2007. http://proquest.umi.com/pqdweb?did=1691249441&sid=3&Fmt=2&clientId=1509&RQT=309&VName=PQD.

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Thesis (Ph. D.)--Southern Illinois University Carbondale, 2007.<br>"Department of Pharmacology." Keywords: Saturated fatty acids, Superior cervical ganglion, Depolarization Includes bibliographical references (p. 121-134). Also available online.

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17

Winkler, Maren Katharina Laura [Verfasser]. "Cortical spreading depolarization in patients with aneurysmal subarachnoid hemorrhage / Maren Katharina Laura Winkler." Berlin : Medizinische Fakultät Charité - Universitätsmedizin Berlin, 2012. http://d-nb.info/1026788943/34.

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18

Lee, Ray A. "Analysis of Spreading Depolarization as a Traveling Wave in a Neuron-Astrocyte Network." The Ohio State University, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=osu1503308416771087.

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19

Golde, Jonas, Florian Tetschke, Julia Walther, et al. "Detection of carious lesions utilizing depolarization imaging by polarization sensitive optical coherence tomography." SPIE, 2018. https://tud.qucosa.de/id/qucosa%3A71747.

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As dental caries is one of the most common diseases, the early and noninvasive detection of carious lesions plays an important role in public health care. Optical coherence tomography (OCT) with its ability of depth-resolved, high-resolution, noninvasive, fast imaging has been previously recognized as a promising tool in dentistry. Additionally, polarization sensitive imaging provides quantitative measures on the birefringent tissue properties and can be utilized for imaging dental tissue, especially enamel and dentin. By imaging three exemplary tooth samples ex vivo with proximal white spot,

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20

Reiffurth, Clemens [Verfasser]. "The role of Na+/K+-ATPase alpha isoforms in spreading depolarization / Clemens Reiffurth." Berlin : Medizinische Fakultät Charité - Universitätsmedizin Berlin, 2020. http://d-nb.info/1218078200/34.

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21

Chourasia, Sonam. "CORRELATION BETWEEN ALTERNANS OF EARLY AND LATE PHASES OF VENTRICULAR ACTION POTENTIAL." UKnowledge, 2011. http://uknowledge.uky.edu/cbme_etds/1.

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Several studies suggest that action potential duration (APD) alternans play an important role in initiation of arrhythmias, while less is known about the alternans of early phases of action potential (AP) and phase relation between the two. Transmembrane potentials recorded from swine and canine ventricles were analyzed to determine the correlation and phase relation between alternans of early and late phases of an AP. In both species, for activation intervals ≤ 400 ms, action potential amplitude (APA) alternans occurred≥ 50% of times when APD alternans occurred and vice versa, both were mostl

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22

Khan, Shahid Ahmed. "Extra-high frequency line-of-sight propagation for future urban communications." Thesis, University of Portsmouth, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.326987.

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23

Pinczolits, Alexandra. "Einfluss von Cortical Spreading Depolarization auf eine verzögerte Infarktprogression bei Patienten mit malignem Schlaganfall." Doctoral thesis, Humboldt-Universität zu Berlin, Lebenswissenschaftliche Fakultät, 2015. http://dx.doi.org/10.18452/17193.

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Der Schlaganfall steht hinter den Herz- und Tumor-Erkrankungen an dritter Stelle aller Todesursachen. Der wichtigste Faktor für die Vermeidung dauerhafter Invalidität und die Wiederherstellung maximaler Lebensqualität ist die Verhinderung von sekundären Komplikationen. Dabei stellt die Infarktprogression eine der schwerwiegendsten Komplikationen dar. Im Rahmen dieser Arbeit konnte bei insgesamt 45 Patienten mit einem malignen Schlaganfall mittels serieller MRT-Aufnahmen bestimmt werden, ob eine Infarktprogression vorlag. Ein Schwerpunkt der Arbeit war es, die hämodynamische Antwort und die

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24

Tyler, Alan Wayne. "Studies on the ionic basis of primary afferent depolarization in the isolated mammalian spinal cord." Thesis, University of Southampton, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.296523.

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25

Mongeon, Luc Roland. "The right atrial pacemaker complex: The underlying mechanisms mediating the multicentric origin of atrial depolarization." Case Western Reserve University School of Graduate Studies / OhioLINK, 1993. http://rave.ohiolink.edu/etdc/view?acc_num=case1060777680.

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26

Kuwahara, M., T. Morino, T. Nakanishi, et al. "Spin-Polarized Electrons Extracted from GaAs Tips using Field Emission." American Institite of Physics, 2007. http://hdl.handle.net/2237/11993.

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27

Drummond, Krista. "Polarimetric Road Ice Detection." Thesis, The University of Arizona, 2014. http://hdl.handle.net/10150/347115.

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Ever since automobiles became affordable for the average American, with the introduction of the Ford Model T in 1908, making driving safer has been a priority. While driver intoxication and distraction are the leading causes of automotive fatalities, poor road conditions increase the frequency and deadliness of these incidents. Monitoring road conditions for thousands of miles of road is a huge undertaking, one too large for human surveillance. Automated systems capable of detecting and reacting to dangerous road conditions would be life-saving. These systems could be mounted to the sides of r

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28

Gilad, Ori. "Preliminary studies in imaging neuronal depolarization in the brain with electrical or magnetic detection impedance tomography." Thesis, University College London (University of London), 2008. http://discovery.ucl.ac.uk/1444179/.

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Electrical impedance Tomography (EIT) is a novel medical imaging method which has the potential to provide the revolutionary advance of a method to image fast neural activity non-invasively. by imaging electrical impedance changes over milliseconds which occur when neuronal ion channels open during activity. These changes have been estimated to be c.1% locally in cerebral cortex, if measured with applied current below 100Hz. The purpose of this work was to determine if such changes could be reproducibly recorded in humans non invasive First, a novel recessed electrode was designed and tested t

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29

De, Voir Christopher S. "Wavelet Based Feature Extraction and Dimension Reduction for the Classification of Human Cardiac Electrogram Depolarization Waveforms." PDXScholar, 2005. https://pdxscholar.library.pdx.edu/open_access_etds/1740.

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An essential task for a pacemaker or implantable defibrillator is the accurate identification of rhythm categories so that the correct electrotherapy can be administered. Because some rhythms cause a rapid dangerous drop in cardiac output, it is necessary to categorize depolarization waveforms on a beat-to-beat basis to accomplish rhythm classification as rapidly as possible. In this thesis, a depolarization waveform classifier based on the Lifting Line Wavelet Transform is described. It overcomes problems in existing rate-based event classifiers; namely, (1) they are insensitive to the conduc

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30

Nicolet, Mathieu. "Characterization of ice crystals and water droplets with the ice optical detector device (IODE) using depolarization measurements /." Zürich : ETH, 2008. http://e-collection.ethbib.ethz.ch/show?type=diss&nr=17659.

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31

Anderson, Trent R. "Imaging of spreading depression and anoxic depolarization in rat neocortical slice, prevention by sigma¦1 receptor agonists." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2001. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp05/NQ63400.pdf.

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32

Talib, Zeeshan. "Investigation of Fast High Voltage PDC Measurement based on a Vacuum Reed-switch." Thesis, KTH, Elektroteknisk teori och konstruktion, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-91924.

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The diagnostic technique, polarization and depolarization current (PDC) is useful for insulation testing. It requires applying a DC step voltage to the test sample and measuring the current. To measure fast PDC phenomena a fast step is needed. One way of applying a fast high voltage step is to use power electronic switches. Series connection can be used to increase the voltage limit, but this result in unequal voltage sharing unless equipped with voltage balancing. In this work a high voltage vacuum reed switch is investigated as a simple and low-cost alternative to power electronic switches,

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33

Knauer, Beate [Verfasser], Motoharu [Akademischer Betreuer] Yoshida, and Denise [Akademischer Betreuer] Manahan-Vaugham. "Persistent firing and depolarization block in rat CA1 pyramidal neurons / Beate Knauer. Gutachter: Motoharu Yoshida ; Denise Manahan-Vaugham." Bochum : Ruhr-Universität Bochum, 2016. http://d-nb.info/1089005970/34.

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34

Oi, Kazuki. "Low-dose perampanel improves refractory cortical myoclonus by the dispersed and suppressed paroxysmal depolarization shifts in the sensorimotor cortex." Doctoral thesis, Kyoto University, 2021. http://hdl.handle.net/2433/263565.

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35

Guigue, Mathieu. "À la recherche de nouvelles forces avec l’hélium 3 polarisé." Thesis, Université Grenoble Alpes (ComUE), 2015. http://www.theses.fr/2015GREAY026/document.

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L’exploration des interactions fondamentales entre les particules subatomiquesa abouti à la construction du Modèle Standard de la physique des particules qui n’a été misen défaut par aucune expérience en laboratoire. Cependant, de sérieuses indications théoriqueset cosmologiques révèlent des insuffisances au Modèle Standard et des déviationssont attendues. Cette nouvelle physique est recherchée auprès des grands collisionneursmettant en jeu des énergies de l’ordre de l’échelle électrofaible et au-delà. A contre-courant,la nouvelle physique pourrait aussi se manifester à très basse énergie, néc

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36

Smith, Helen. "Scattering ice clouds." Thesis, University of Manchester, 2015. https://www.research.manchester.ac.uk/portal/en/theses/scattering-ice-clouds(949032cc-fbdd-4fde-a942-163d870a5ddd).html.

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The 2013 meeting of the Intergovernmental Panel on Climate Change concluded that the coupling of clouds to the Earth's climate is one of the biggest uncertainties faced in predicting climate change today. Cirrus clouds are of particular interest because the extensive variability in particle size, shape and complexity poses a number of challenges in the accurate modelling of optical properties. The dependence of the single-scattering properties on particle shape demand accurate representation of the crystal geometries in scattering models, geometries which can vary from simple hexagonal prisms

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37

Li, Yao. "Contributions of TRPM4 and Rho Kinase to Myogenic Tone Development in Cerebral Parenchymal Arterioles." ScholarWorks @ UVM, 2016. http://scholarworks.uvm.edu/graddis/464.

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Cerebral parenchymal arterioles (PAs) play a critical role in assuring appropriate blood flow and perfusion pressure within the brain. PAs are unique in contrast to upstream pial arteries, as defined by their critical roles in neurovascular coupling, distinct sensitivities to vasoconstrictors, and enhanced myogenic responsiveness. Dysfunction of these blood vessels is implicated in numerous cardiovascular diseases. However, treatments are limited due to incomplete understanding of the fundamental control mechanisms at this level of the circulation. One of the key elements within most vascular

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38

Maslarova, Anna [Verfasser]. "Different susceptibility of acutely injured and chronically epileptic brain tissue to induction of cortical spreading depolarization and seizures / Anna Maslarova." Berlin : Medizinische Fakultät Charité - Universitätsmedizin Berlin, 2014. http://d-nb.info/1062949048/34.

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39

Nashat, Amir Hossein 1973. "Temporal evolution of intracellular signaling and gene expression following patterns of membrane depolarization in the pheochromocytoma cell line, PC 12." Thesis, Massachusetts Institute of Technology, 2002. http://hdl.handle.net/1721.1/29297.

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Thesis (Sc.D.)--Massachusetts Institute of Technology, Dept. of Chemical Engineering, February 2003.<br>Includes bibliographical references.<br>An experimental study was performed to characterize the effects of different patterns of membrane depolarization on undifferentiated pheochromocytoma (PC 12) cells. In response to chronic depolarization, cytoplasmic free Ca2+ ([Ca2+]i) levels increased transiently, then decreased to intermediate levels that were maintained for more than 90 minutes. Short pulses of depolarization, from 1 to 5 minutes in length, also resulted in transient increases in [C

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40

Starr, Michael Allan. "Rain attenuation and depolarization along 10 to 30 GHz earth space links predicted from s-band dual-polarized radar measurements." Thesis, Virginia Polytechnic Institute and State University, 1986. http://hdl.handle.net/10919/101151.

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This thesis presents the computer model FORWP that is capable of predicting attenuation and cross polarization at 10-30 GHz from dual-polarization radar data with a high degree of accuracy. FORWP uses a rigorous backscattering computer model BSCAT to infer rain drop size distribution along the slant path from radar measured reflectivity and differential reflectivity data collected along the path. Then, two semi-empirical models are developed which predict attenuation from radar measured reflectivity and differential reflectivity. These two semi-empirical models are used to evaluate FORWP. Fi

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41

Milakara, Denny [Verfasser]. "Simulation of spreading depolarization trajectories in cerebral cortex : correlation of velocity and susceptibility in patients with aneurysmal subarachnoid hemorrhage / Denny Milakara." Berlin : Medizinische Fakultät Charité - Universitätsmedizin Berlin, 2018. http://d-nb.info/1176632361/34.

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42

Bachynskyi, V. T., O. Pavliukovych, O. Vanchuliak, M. Garazdiuk, and N. Pavliukovych. "Change of degree of depolarization of the laser radiation scattered by the hepatic tissue to diagnose the prescription of death coming." Thesis, Abstract der 97. Jahrestangung der DGRM. Rechtsmedizin – Halle, 12-15/09/2018. – P. 384-385, 2018. http://dspace.bsmu.edu.ua:8080/xmlui/handle/123456789/15091.

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The basic task s of forensic medical experts are establishing the cause of death and the prescription of its coming that is very complicated due to the absence of circumstances and objective data which would be able to point out a possible time of its coming.

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43

Koirala, Prakash. "Experimental determination of the electric quadrupole moment and collisional depolarization of J=3/2 cesium atoms with krypton using linear polarization spectroscopy." Oxford, Ohio : Miami University, 2008. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=miami1217011195.

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44

Zipprich, Hannah [Verfasser], Otto W. Gutachter] Witte, Frank [Gutachter] Richter, and Rüdiger [Gutachter] [Köhling. "Untersuchung ausgewählter Translationsinitiationsfaktoren nach Spreading Depolarization zur Analyse der globalen Proteinsynthese / Hannah Maria Zipprich ; Gutachter: Otto W. Witte, Frank Richter, Rüdiger Köhling." Jena : Friedrich-Schiller-Universität Jena, 2017. http://d-nb.info/1177599635/34.

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45

Pavlyukovich, O., V. T. Bachynskyi, and N. Pavlyukovich. "Spectral change of the degree of depolarization of laser radiation scattered by the myocardia tissue to diagnose the prescription of death coming." Thesis, 39 th International Medical Scientific Congress, May 2016 Ohrid, Macedonia, 2016. http://dspace.bsmu.edu.ua:8080/xmlui/handle/123456789/11319.

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46

Larkman, Philip M. "The electrophysiology of adult rat facial motoneurones in a novel in vitro brainstem slice : ionic mechanism and pharmacological characterisation of serotonin (5-hydroxytryptamine)-evoked depolarization." Thesis, University of Edinburgh, 1990. http://hdl.handle.net/1842/29214.

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This study describes intracellular recordings from adult rat cranial motoneurones constituting the Facial Motor Nucleus of the brainstem, using a novel in vitro slice. Facial motoneurones (FMn's) were identified histologically using retrograde labelling with HRP and by antidromic invasion. Antidromically evoked action potentials were overshooting, with initial segment and somato-dendritic components and were often followed by depolarizing potentials. Directly-evoked overshooting action potentials were followed by a fast after hyperpolarization, a brief delayed depolarization and a longer lasti

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47

Ailloud, Quentin. "Composants interférentiels pour une dépolarisation spectrale contrôlée." Thesis, Aix-Marseille, 2018. http://www.theses.fr/2018AIXM0343/document.

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La lumière polarisée est généralement considérée comme une valeur ajoutée et est souvent utilisée pour améliorer l'observation de scènes et d’échantillons, grâce à différents processus d'optimisation. Cependant, il existe un certain nombre de situations où la polarisation de la lumière est pénalisante, et pour lesquelles il est majeur que la lumière polarisée soit transformée en lumière non polarisée. Pour illustration, de nombreuses applications spatiales nécessitent des détecteurs embarqués pour analyser les flux optiques provenant de la Terre ou de l’environnement. Ces flux sont collectés a

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48

Pinczolits, Alexandra [Verfasser], Johannes [Akademischer Betreuer] Woitzik, Hermann-Georg [Akademischer Betreuer] Holzhütter, York [Akademischer Betreuer] Winter, and Michael [Akademischer Betreuer] Brecht. "Einfluss von Cortical Spreading Depolarization auf eine verzögerte Infarktprogression bei Patienten mit malignem Schlaganfall / Alexandra Pinczolits. Gutachter: Johannes Woitzik ; Hermann-Georg Holzhütter ; York Winter ; Michael Brecht." Berlin : Lebenswissenschaftliche Fakultät, 2015. http://d-nb.info/1070578436/34.

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49

Kwon, Seok Chul. "Geometrical theory, modeling and applications of channel polarization." Diss., Georgia Institute of Technology, 2013. http://hdl.handle.net/1853/52954.

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Long-term evolution (LTE) standard has been successfully stabilized, and launched in several areas. However, the required channel capacity is expected to increase significantly as the explosively increasing number of smart-phone users implies. Hence, this is already the time for leading researchers to concentrate on a new multiple access scheme in wireless communications to satisfy the channel capacity that those smart users will want in the not-too-distant future. The diversity and multiplexing in a new domain - polarization domain - can be a strong candidate for the solution to that problem

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50

Carvalhaes, Roberto Paiva Magalhães. "Correntes de despolarização termicamente estimuladas, ressonância paramagnética eletrônica e absorção óptica aplicadas no estudo de defeitos dipolares em MgAl2O4." Universidade de São Paulo, 2008. http://www.teses.usp.br/teses/disponiveis/43/43134/tde-02042009-124458/.

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Neste trabalho foram utilizadas as técnicas de Ressonância Para-magnética Eletrônica (RPE), Absorção Óptica (AO) e Correntes de despolarização Termicamente Estimuladas (CDTE) no estudo de defeitos de origem dipolar no óxido de alumínio e magnésio MgAl2O4. O espectro de CDTE das amostras denominadas R apresentaram 3 picos, dois deles centrados em 160 K e 130 K, atribuídos a defeitos dipolares e um em 320 K que não apresenta características dipolares. irradiação gama cria um pico muito intenso centrado na posição de 245 K. Essa banda mostrou-se instável à temperatura ambiente tendo o seu máximo

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