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Rozprawy doktorskie na temat „Spectroscopy of Sodium Selenate”

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Data publikacji: 3 czerwca 2025
Data aktualizacji: 31 lipca 2025

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1

Dierking, Christoph Wilhelm Hansjörn Ralf. "Photoionization and vibrational spectroscopy of sodium doped water clusters." Doctoral thesis, Niedersächsische Staats- und Universitätsbibliothek Göttingen, 2019. http://hdl.handle.net/11858/00-1735-0000-002E-E608-3.

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Faria, Letícia de Abreu. "Levantamento sobre selênio em solos e plantas do Brasil e sua aplicação em plantas forrageiras." Universidade de São Paulo, 2009. http://www.teses.usp.br/teses/disponiveis/74/74131/tde-13042009-094603/.

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A incidência de altas concentrações de selênio (Se) no solo é relatada em várias partes do mundo. Em regiões do estado de São Paulo se observou deficiência em gramíneas, provavelmente associadas ao solo, que em alguns países é corrigido através de fertilização. O Se é essencial aos animais e sua deficiência implica na ocorrência de doenças e nas plantas superiores sua essencialidade também foi constatada. É relevante a falta de informações sobre o assunto a ser estudado, principalmente em solos tropicais. O objetivo da pesquisa foi à obtenção de informações sobre Se no sistema solo x planta. O
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3

Finzer, Brant M. "Detection of Oxyanion Adsorption at the Silica-Aqueous Interface using Total Internal Reflection (TIR)-Raman Spectroscopy." The Ohio State University, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=osu1417521135.

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4

Ge, Jian 1966. "Sodium laser guide star technique, spectroscopy and imaging with adaptive optics." Diss., The University of Arizona, 1998. http://hdl.handle.net/10150/282740.

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A sodium laser guide star (LGS) adaptive optics (AO) system developed at Stewart Observatory is to be used at the 6.5m MMT. Annual measurements at Kitt Peak show that the mean mesospheric sodium column density varies from ∼2x10⁹cm⁻² (summer) to ∼5x10⁹cm⁻² (winter). The sodium column density also varies by a factor of two during a one hour period. The first simultaneous measurements of sodium LGS brightness, sodium column density and laser power were obtained. The absolute sodium return for a continuous wave circularly polarized beam is 1.2(±0.3)x10⁶ photons s⁻¹m⁻²W⁻¹ for the sodium column dens
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5

Vegunta, Vijaya Lakshmi. "A study on the thermal stability of sodium dithionite using ATR-FTIR spectroscopy." Thesis, KTH, Fiber- och polymerteknologi, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-197370.

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Sodium dithionite (Na2S2O4) is a powerful reducing agent. It has therefore been suggested to be used as an additive in kraft pulping to improve the yield. However, sodium dithionite easily decomposes and it is thus important to determine the effect of different conditions. The aim of this thesis has been to investigate the thermal stability of sodium dithionite under anaerobic conditions using ATR-FTIR spectroscopy under different conditions, such as heating temperature, concentration of the solution, heating time and pH. The stability of sodium dithionite was found to decrease with increasing
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6

Bachiega, Patricia. "Atividade antiproliferativa \"in vitro\" em diferentes estádios de maturação do brócolis (Brassica oleracea L. var. itálica) biofortificados ou não com selênio." Universidade de São Paulo, 2014. http://www.teses.usp.br/teses/disponiveis/11/11141/tde-11082014-165534/.

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O câncer é a segunda causa de morte da população mundial e constitui-se em sério problema de saúde pública no mundo. Seu tratamento acarreta além de elevados gastos, diversos efeitos colaterais aos pacientes. Dessa forma, alternativas que possam minimizar esses fatos são extremamente viáveis. Diversos estudos já comprovaram o efeito sinérgico dos isotiocianatos e do selênio e a sua contribuição como agentes protetores contra danos oxidativos e aumentam a expressão de enzimas responsáveis pela desintoxicação de compostos cancerígenos. Com base nisso, o objetivo desta pesquisa foi avaliar a infl
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7

Valley, John Francis. "Nonlinear optical experiments in sodium vapor and comparison with Doppler-broadened two-level-atom theory." Diss., The University of Arizona, 1989. http://hdl.handle.net/10150/184930.

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Two spectral regions of gain exist for a weak probe beam propagating through a medium of two-level-atoms pumped by a strong near-resonance field. Experimentally a cw ring-dye laser is used to explore this gain at the Na D₂ resonance in a vapor. Plane-wave calculations of probe-gain spectra which include the Doppler broadening inherent in a vapor agree well with experimental spectra obtained with a Fabry-Perot interferometer. Such two-beam-coupling gain might have applications as optical pre- or power amplifiers. The gain is also the primary step in four-wave-mixing. Mixing of the pump and side
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8

Marshall, P. "Kinetic studies of sodium atoms at elevated temperatures by time-resolved atomic resonance absorption spectroscopy." Thesis, University of Cambridge, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.355262.

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9

Chawla, Gunjit. "Study of long range potentials in excited states of diatomic sodium using modulated gain spectroscopy." Thesis, Massachusetts Institute of Technology, 1985. http://hdl.handle.net/1721.1/15297.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Chemistry, 1985.<br>MICROFICHE COPY AVAILABLE IN ARCHIVES AND SCIENCE.<br>Includes bibliographical references.<br>by Gunjit Chawla.<br>Ph.D.
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10

Saaranen, Michael W. "Measuring the Radiative Lifetimes of the Vibrational Levels in the 6 sSg State of Sodium Dimers Using Time-Resolved Spectroscopy." Miami University / OhioLINK, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=miami1556890302820845.

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11

Wagle, Dinesh. "TIME-RESOLVED LASER SPECTROSCOPY TO MEASURE LIFETIME OF THE 6sSg(v,J) STATE IN DIATOMIC SODIUM MOLECULE." Miami University / OhioLINK, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=miami1563203851937262.

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12

Safrany, Renard Marianne. "Propriétés électrochimiques et réponse structurale du polymorphe gamma'-V2O5 vis-à-vis de l'insertion du lithium et du sodium." Thesis, Paris Est, 2017. http://www.theses.fr/2017PESC1185/document.

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La question du stockage de l’énergie est actuellement au cœur de nombreuses problématiques internationales. Le développement de systèmes de stockage tels que les batteries lithium ion (LIB) et sodium ion (SIB) fait donc l’objet aujourd’hui de nombreuses recherches. Dans ce contexte, les matériaux lamellaires présentant un espace inter-feuillet permettant une insertion d’espèces cationiques semblent idéals dans le cadre d’une utilisation comme matériau d’électrode positive pour ces systèmes LIB et SIB. Parmi ces structures le pentoxyde de vanadium, sous sa forme alpha est un composé modèle prés
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13

Junior, Euclydes Marega. "Espectroscopia de alta resolução num feixe supersônico de sódio." Universidade de São Paulo, 1993. http://www.teses.usp.br/teses/disponiveis/54/54131/tde-21052007-105156/.

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Neste trabalho realizamos medidas espectroscópicas de alta resolução nas bandas vibracionais da transição A1&#8721;+u&#8594;X1&#8721;+g do dímero de Sódio, produzido a partir da expansão supersônica do vapor deste metal no vácuo. Para determinação das constantes moleculares utilizamos técnicas alternativas de espectroscopia óptica de alta-resolução, tais como: Fluorescência Ressonante, Raman Estimulado e Depopulação Óptica. As duas últimas técnicas utilizam dois campos de laser, por isso são também chamadas de técnicas de campo duplo e proporcionam a simplificação do espectro de Fluorescência
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14

Ng, Chi Wing. "Detection of sodium and potassium in single human erythrocytes by laser-induced plasma spectroscopy : instrumentation and feasibility demonstration." HKBU Institutional Repository, 1999. http://repository.hkbu.edu.hk/etd_ra/173.

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15

Huynh, Le Thanh Nguyen. "Les accumulateurs au sodium et sodium-ion, une nouvelle génération d’accumulateurs électrochimiques : synthèse et électrochimie de nouveaux matériaux d’électrodes performants." Thesis, Paris Est, 2016. http://www.theses.fr/2016PESC1123/document.

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Les accumulateurs au lithium jouent un rôle important comme source d'alimentation pour les appareils électroniques portables en raison de leur forte capacité gravimétrique et volumétrique et leur haute tension. En outre, la technologie lithium-ion est la mieux placée pour une application à grande échelle, telle que le véhicule électrique, ce qui pose un problème de ressource et à terme, de coût. Une des réponses envisagées sur le plan économique et environnemental est le développement d’accumulateurs sodium-ion. Dans tous les cas, le problème scientifique consiste à proposer des matériaux d’in
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16

David, Lucas. "Sodium-water reaction : a heterogeneous runaway process." Thesis, Aix-Marseille, 2019. http://www.theses.fr/2019AIXM0580.

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La réaction sodium-eau est une réaction hétérogène : les réactifs sont en deux phases séparées par un film de gaz. Une telle réaction chimique ne peut théoriquement pas s’emballer, or les observations démontrent le contraire. En effet, la réaction sodium-eau peut devenir explosive, générant ondes de pression et éjections de matière. Un mécanisme présenté précédemment propose d’expliquer ces observations par la vaporisation rapide du sodium. Sous l’effet de la chaleur dégagée par la réaction, le sodium pourrait se vaporiser intensément et se mélanger à la vapeur d’eau, permettant l’emballement.
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17

Hacene, Cherkaski Yanis. "Influence de la microstructure de la thorine yttriée sur sa tenue au sodium, en vue de réaliser des sondes à oxygène dans les réacteurs au sodium de IVème Génération." Thesis, Montpellier, 2018. http://www.theses.fr/2018MONTS126/document.

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Dans le cadre du développement du démonstrateur de réacteur de IVème Génération ASTRID (Advanced Sodium Fast Reactor for Industrial Demonstration), une sonde potentiométrique permettant de réaliser une mesure spécifique et précise de l’oxygène dissous dans le sodium, redondante et diversifiée par rapport à l’indicateur de bouchage, est en voie d’élaboration. Celle-ci inclut une céramique électrolyte, la thorine yttriée, qui en constitue un élément essentiel. Ce travail de thèse a donc consisté à évaluer les propriétés d’un tel électrolyte solide, dont sa conduction ionique et sa durabilité en
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18

Feng, Xu. "Interaction of Na, O2, CO2 and water on MnO(100): Modeling a complex mixed oxide system for thermochemical water splitting." Diss., Virginia Tech, 2015. http://hdl.handle.net/10919/77378.

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A catalytic route to hydrogen production via thermochemical water splitting is highly desirable because it directly converts thermal energy into stored chemical energy in the form of hydrogen and oxygen. Recently, the Davis group at Caltech reported an innovative low-temperature (max 850C) catalytic cycle for thermochemical water splitting based on sodium and manganese oxides (Xu, Bhawe and Davis, PNAS, 2012). The key steps are thought to be hydrogen evolution from a Na2CO3/MnO mixture, and oxygen evolution by thermal reduction of solids formed by Na+ extraction from NaMnO2. Our work is aimed
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19

Frisch, Jessica Lynne. "Tandem Mass Spectrometric Analysis of Ammonium and Sodium Oligoperoxide Adducts with the Application of Two-Dimensional Correlation Spectroscopy and Computational Chemistry." Doctoral diss., University of Central Florida, 2012. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/5212.

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Oligoperoxides, H[OO(CH3)2C]nOOH, are formed as side products in the synthesis of the primary high explosive triacetone triperoxide (TATP). Previous tandem mass spectrometry (MSn) experiments using a quadrupole ion trap reported that the open-chained oligoperoxide adducts of ammonium or sodium resulted in different product ions in the mass spectra. Dissociation mechanisms were previously proposed based on MSn experiments, where n>2; however, a dissociation pathway achieved by an MSn experiment, where n>2, may not necessarily be the same pathway achieved in an MS2 experiment. For this disser
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20

SANLI, AYDIN. "Transition Dipole Moment and Lifetime Study of Sodium Dimer and Lithium Dimer Electronic States via Autler-Townes and Resolved Fluorescence Spectroscopy." Diss., Temple University Libraries, 2017. http://cdm16002.contentdm.oclc.org/cdm/ref/collection/p245801coll10/id/444569.

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Physics<br>Ph.D.<br>This dissertation consists of three major studies. The first study, described in Chapter 3, focuses on the experimental work we carried out; experimental study of the electronic transition dipole moment matrix elements (TDMM) for the and electronic transitions of the sodium dimer molecule. Here we obtained the electronic transition dipole moments through Autler-Townes and resolved fluorescence spectroscopy and compared them to the theory. The second study, described in Chapter 4, is on sodium dimer ion-pair states. In this work, we calculated the radiative lifetimes and ele
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21

Pant, Lok Raj. "The Radiative Lifetime Measurement on 61Σ+g (v = 9, 10, 11, J = 31) Excited States of Molecular Sodium Using Time Resolved High Resolution Doubled Resonance Spectroscopy". Miami University / OhioLINK, 2021. http://rave.ohiolink.edu/etdc/view?acc_num=miami1626966676896514.

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22

Thompson, Jeffrey M. "The electronic structure and spectra of small metal clusters /." Thesis, Connect to this title online; UW restricted, 1998. http://hdl.handle.net/1773/9648.

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23

Daire, Sophia Elaine. "The spectroscopy of NO containing complexes and the thermodynamics of Na containing cations in relation to the formation of sodium sporadic layers." Thesis, University of Sussex, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.288628.

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24

Dierking, Christoph Wilhelm Hansjörn Ralf [Verfasser], Thomas [Akademischer Betreuer] Zeuch, Thomas [Gutachter] Zeuch, and Alec [Gutachter] Wodtke. "Photoionization and vibrational spectroscopy of sodium doped water clusters / Christoph Wilhelm Hansjörn Ralf Dierking ; Gutachter: Thomas Zeuch, Alec Wodtke ; Betreuer: Thomas Zeuch." Göttingen : Niedersächsische Staats- und Universitätsbibliothek Göttingen, 2019. http://d-nb.info/120463596X/34.

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25

LALWANI, DARSHAN NARENDRA. "An oral dosage form of ceftriaxone sodium using enteric coated sustained release calcium alginate beads." University of Toledo Health Science Campus / OhioLINK, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=mco1430403186.

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Zhao, Shangqing. "Coumarin-based molecular probes : exploring the spectroscopic properties of complex mixtures and applications in colloid chemistry." Thesis, Linnéuniversitetet, Institutionen för kemi och biomedicin (KOB), 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-79176.

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Warfarin is a well-known anticoagulant drug that is used to prevent cardiovascular disease and blood coagulation such as thrombosis. In this study, the main aim was to investigate the photo physical characteristics of warfarin in the different molecular environments provided by sodium dodecyl sulfate (SDS) micelles by using ultraviolet absorption and fluorescence emission spectroscopic techniques. Warfarin and a structural analogue not existing in solution as a cyclic hemiketal, phenprocoumon, were mixed with different concentrations of SDS and spectral changes for these warfarin and phenproco
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27

Yu, Yueh-Chung. "K-shell x-ray production cross sections in carbon, oxygen, fluorine, sodium, magnesium, and aluminum by 0.5 to 8.0 mev protons, helium, and lithium ions." Thesis, University of North Texas, 1991. https://digital.library.unt.edu/ark:/67531/metadc332830/.

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28

Zahmakiran, Mehmet. "Synthesis And Characterization Of Ruthenium(0) Metal Nanoparticles As Catalyst In The Hydrolysis Of Sodium Borohydride." Master's thesis, METU, 2005. http://etd.lib.metu.edu.tr/upload/3/12605966/index.pdf.

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Sodium borohydride is stable in alkaline solution, however, it hydrolyses and generates hydrogen gas in the presence of suitable catalyst. By this way hydrogen can be generated safely for the fuel cells. All of the catalyst having been used in the hydrolysis of sodium borohydride, with one exception, are heterogeneous. The limited surface area of the heterogeneous and therefore, have limited activity because of the surface area. Thus, the use of metal nanoclusters as catalyst with large surface area is expected to provide a potential route to increase the catalytic activity. In this dissertat
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29

Le-That, Tran-Trung. "Switchable ionic liquids for biomass treatment : Investigation of structural changes in sodium lignosulfonate by 2D-NMR spectroscopy after treatment with switchable ionic liquids." Thesis, Umeå universitet, Kemiska institutionen, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-123118.

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30

Krishnakumar, Megha. "Physicochemical compatibility and stability of 4% sodium citrate and ethanol when stored in silicone coated and non-silicone coated glass containers." University of Toledo Health Science Campus / OhioLINK, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=mco1588869684016374.

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31

Le, Thi-Kim-Khanh. "Study of corrosion of steel in molten sodium nitrate at 340°C." Thesis, Université Paris-Saclay (ComUE), 2016. http://www.theses.fr/2016SACLS371/document.

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Cette thèse a été réalisée initialement dans le cadre du projet Stockage Thermique Appliqué à l’extension de Production d’énergie Solaire thermodynamique (STARS) soutenu par l'Agence De l'Environnement et de la Maîtrise de l'Energie (ADEME).L’objectif du projet est de développer une solution de stockage thermique adaptée à la technologie Fresnel à génération directe de vapeur avec une zone de stockage de chaleur latente. Dans une unité de stockage latent, le nitrate de sodium (NaNO3) a été choisi comme matériau à changement de phase (MCP) et l’acier faiblement allié a été envisagé comme matéri
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32

Difi, Siham. "Phosphates de type NASICON comme matériaux d'électrode pour batteries sodium-ion à haute densité d'énergie." Thesis, Montpellier, 2016. http://www.theses.fr/2016MONTT212/document.

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Ce mémoire est consacré à l’étude des composites à base de phosphates de type NASICON comme matériaux d’électrode pour batteries sodium-ion : Na1+xFexTi2-x(PO4)3/C et Na1+xFexSn2-x(PO4)3/C avec 0 ≤ x ≤ 1. Ces composites ont été synthétisés par voie solide suivie d’une pyrolyse avec le saccharose. Ils sont constitués de particules ayant une porosité élevée et enrobées par du carbone conférant à l’électrode une bonne conductivité ionique et électronique. Les mécanismes réactionnels se produisant lors des cycles de charge-décharge ont été analysés en mode operando par diffraction des rayons X, sp
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33

Keon, Claudia Anne. "Ionic, metabolic and contractile function changes in the isolated rat heart during ischemia and reperfusion: Lithium-7, sodium-23 and phosphorus-31 NMR spectroscopy studies." Thesis, University of Ottawa (Canada), 1992. http://hdl.handle.net/10393/7638.

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$\sp7$Li NMR spectroscopy has been used to investigate the transsarcolemmal transport mechanisms responsible for the increase in intracellular sodium that occurs during global ischemia in the isolated rat heart. Hearts were perfused with a modified Krebs Henseleit buffer containing 78 mM sodium and 78 mM lithium, lithium being a biological congener for sodium with twice the sodium NMR sensitivity. The NMR relaxation times for lithium were investigated in the perfused heart and buffer solutions. The addition of the shift reagent, DyTTHA$\sp{3-}$, shortened the relaxation times for lithium in bu
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34

Storjohann, Rasmus. "Structure of a biologically active fragment of human serum apolipoprotein C-II in the presence of sodium dodecyl sulfate and dodecylphosphocholine determined by NMR spectroscopy." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp01/MQ37638.pdf.

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35

Rosso, Aldana. "Free Molecular and Metal Clusters Studied by Synchrotron Radiation Based Electron Spectroscopy." Doctoral thesis, Uppsala universitet, Institutionen för fysik och materialvetenskap, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-9323.

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The main purpose of this Thesis is the experimental characterization of the electronic and geometric structures of objects called clusters. A cluster consists of a finite group of bound atoms or molecules. Due to its finite size, it may present completely different properties than those of the isolated atom and the bulk. The clusters studied in this work are constituted by rare-gas atoms, organic molecules, and metal atoms. Intense cluster beams were created using either an adiabatic expansion source or a gas-aggregation source, and investigated by means of synchrotron radiation based photoele
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36

Metin, Onder. "Synthesis And Characterization Of Hydrogenphosphate-stabilized Nickel(0) Nanoclusters As Catalyst For The Hydrolysis Of Sodium Borohydride." Master's thesis, METU, 2006. http://etd.lib.metu.edu.tr/upload/3/12607239/index.pdf.

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The development of new storage materials will facilitate the use of hydrogen as a major energy carrier in near future. In hydrogen economy, chemical hydrides such as NaBH4, KBH4, LiH, NaH have been tested as hydrogen storage materials for supplying hydrogen at ambient temperature. Among these chemical hydrides, sodium borohydride seems to be an ideal hydrogen storage material because it is stable under ordinary conditions and liberates hydrogen gas in a safe and controllable way in aqueous solutions. However, self hydrolysis of sodium borohydride is so slow that it requires a suitable catalyst
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37

Suský, Stanislav. "Elektrolyty pro sodno – iontové akumulátory s použitím iontových kapalin." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2021. http://www.nusl.cz/ntk/nusl-442526.

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The content of this work deals with a theoretical search of sodium-based batteries. The first part of the work contains an introduction to the issue of batteries, contains basic concepts, principles of secondary batteries. In the second part, the basic three divisions of sodium batteries according to the design principles are discussed in more detail. He also deals with the theory of ionic liquids. Their mechanical, thermal and electrical properties and the method used to measure electrolytes are described here. The practical part describes the measurement procedure, displays the recorded meas
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Baumgartner, Sean. "COLLISIONAL DEPOLARIZATION OF THE ATOMIC SODIUM 3S2S1/2 → 3P2P3/2 → 5S2S1/2 TRANSITION WITH ARGON AND XENON BUFFER GAS BY SPECTRAL HOLE-BURNING." Miami University / OhioLINK, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=miami1311956327.

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Borges, Ana Flavia Sanches. "Identificação molecular da dentina decidua em diferentes tratamentos quimicos : analise quimica, micro-mecanica e morfologica." [s.n.], 2007. http://repositorio.unicamp.br/jspui/handle/REPOSIP/288617.

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Orientador: Regina Maria Puppin-Rontani<br>Tese (doutorado) - Universidade Estadual de Campinas, Faculdade de Odontologia de Piracicaba<br>Made available in DSpace on 2018-08-09T19:32:12Z (GMT). No. of bitstreams: 1 Borges_AnaFlaviaSanches_D.pdf: 9249860 bytes, checksum: 185c997bcd0228668822df9171b2e4c2 (MD5) Previous issue date: 2007<br>Resumo: Teoricamente, o suposto menor grau de mineralização da dentina decídua comparado à permanente, produziria comportamento diferente deste substrato após contato com soluções desproteinizantes/desmineralizantes, seguido de restaurações com materiais res
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Amaral, Ian Rodrigues do. "Propriedades estruturais e vibracionais de carbonatos fosfatos isoestruturados (sidorenkiktas)." Universidade Federal do CearÃ, 2017. http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=18566.

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Carbonatos fosfatos isoestruturados do tipo sidorenkitas sÃo materiais com alto potencial de aplicaÃÃo em cÃtodos dos mais modernos tipos de baterias de sÃdio. Sua estrutura lamelar permite a inserÃÃo e extraÃÃo dos Ãons de sÃdio, que sÃo a principal fonte de forÃa eletromotriz da bateria. Utilizando um elemento muito mais abundante na crosta terrestre, esses dispositivos sÃo a grande promessa para substituiÃÃo da, jà bastante difundida, bateria de Ãons de lÃtio. PorÃm, o cÃtodo que contÃm as caracterÃsticas ideais para produzir o melhor desempenho, propiciando alta densidade de energia e esta
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Stiborský, Filip. "Srovnávací studie interakcí tenzidů s hyauronanem a jinými polyelektrolyty." Master's thesis, Vysoké učení technické v Brně. Fakulta chemická, 2012. http://www.nusl.cz/ntk/nusl-216817.

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In this diploma thesis, the interactions between polyelectrolyte and surfactant at low and also at high concentration were studied. There was used pyrene as fluorescent probe during the fluorescence spectroscopy measurement, a cationic surfactant cetyltrimethylammonium bromide and as a main polyelectolyte has been chosen sodium polystyrene sulfonate at 1 MDa molecular size. In the medium containing 0.15 M NaCl we could observed a creation of the complexes – precipitates in the surrounding of CMC concentration and behind of this concentration. In the mixtures containing sodium polystyrene sulfo
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Lima, Cleânio da Luz. "Estudo das propriedades vibracionais do molibidato de sódio hidratado por espectroscopia Raman em função da pressão hidrostática." reponame:Repositório Institucional da UFC, 2008. http://www.repositorio.ufc.br/handle/riufc/12774.

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LIMA, Cleânio da Luz. Estudo das propriedades vibracionais do molibidato de sódio hidratado por espectroscopia Raman em função da pressão hidrostática. 2008. 87 f. Dissertação (Mestrado em Física) - Programa de Pós-Graduação em Física, Departamento de Física, Centro de Ciências, Universidade Federal do Ceará, Fortaleza, 2008.<br>Submitted by Edvander Pires (edvanderpires@gmail.com) on 2015-06-09T18:03:35Z No. of bitstreams: 1 2008_dis_cllima.pdf: 1735905 bytes, checksum: a38aca9b6ecaf707ab1b6f24cdf68c3d (MD5)<br>Approved for entry into archive by Edvander Pires(edvanderpires@gmail.com) on 2015
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Neehaul, Yashvin. "Study of protein in the respiratory chain by IR spectroscopy and electrochemistry." Phd thesis, Université de Strasbourg, 2012. http://tel.archives-ouvertes.fr/tel-00827526.

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The field of molecular bioenergetics deals with the energy transduction in biological cells. In this project, respiration and more specifically proton and sodium pumping enzymes and their coupling to electron transfer have been in focus. First we have been interested in the Na+-pumping NADH:quinone reductase from Vibrio cholerae which is the entry site of electrons in the respiratory chain of several pathogens. The role of specific flavin cofactors and amino acids involved in Na+ transfer has been shown in a combined IR spectroscopic and electrochemical approach. The interaction between protei
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Cunha, Luciana Castro da. "Estudo fitoquímico biomonitorado de Amorimia rigida (Malpighiaceae): 1. Purificação e caracterização do monofluoroacetato de sódio 2. Avaliação bioquímica dos efeitos tóxicos em ratos." Universidade de São Paulo, 2012. http://www.teses.usp.br/teses/disponiveis/10/10133/tde-21052013-140600/.

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A ocorrência de monofluoroacetato de sódio (MFA-Na) em plantas foi registrada, pela primeira vez, em Dichapetalum cymosum. Posteriormente, esta substância tóxica foi encontrada em outras espécies de plantas, como Palicourea marcgravii, causadora de morte súbita. Amorimia rigida, que é bastante conhecida e frequente no Nordeste do Brasil, está entre as plantas tóxicas, que também causam morte súbita em bovinos, com quadro clínico semelhante ao decorrente da ingestão de plantas que contém fluoroacetato de sódio e ao apresentado por animais intoxicados experimentalmente com este tóxico. À A. rigi
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BASSANI, ANDREA. "Terahertz vibrations in proteins: experimental and numerical investigation." Doctoral thesis, Politecnico di Torino, 2017. http://hdl.handle.net/11583/2673736.

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The principal goal of this Doctorate thesis is to study high frequency vibrations (in the range between Gigahertz and Terahertz) in nanoscopic biological structures such as proteins. In particular, the idea of this thesis is to found, by means of experimental sessions and numerical simulations, natural frequencies of entire proteins or of large portions of that. The mechanical behaviour of proteins is receiving an increasing attention from the scientific community. Recently it has been suggested that mechanical vibrations play a crucial role in controlling structural configuration changes (f
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Rabab, Houssam. "Modeling of sodium-ion batteries for on-board diagnosis of their states of charge and health." Electronic Thesis or Diss., Compiègne, 2024. http://www.theses.fr/2024COMP2809.

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La thèse présente un modèle basé sur la physique pour les cellules sodium-ion de type NVPF/HC. Le modèle tient compte des complexités de la modélisation de ces cellules, notamment à cause de leurs non-linéarités liées au courant, à la température et à l'état de charge (State of charge : SoC). La structure du modèle est un circuit équivalent amélioré par des concepts utilisés dans les modèles à particules uniques (Single particle model : SPM) pour former une structure ECM-SPe, adaptée aux diagnostics de SoC et d'état de santé (State of health : SoH). La structure ECM-SPe sépare les effets de la
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PIRES, LUIZ E. B. "Avaliação e identificação da toxidade (Toxicity Identification Evaluation - TIE) do efluente líquido do pólo industrial de Belford Roxo, RJ, e sua contribuição na qualidade das águas do curso inferior do Rio Sarapuí, sub-bacia do Rio Iguaçú, bacia da Baía da Guanabara, RJ, Brasil." reponame:Repositório Institucional do IPEN, 2006. http://repositorio.ipen.br:8080/xmlui/handle/123456789/11476.

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Made available in DSpace on 2014-10-09T12:52:19Z (GMT). No. of bitstreams: 0<br>Made available in DSpace on 2014-10-09T14:00:49Z (GMT). No. of bitstreams: 0<br>Tese (Doutoramento)<br>IPEN/T<br>Instituto de Pesquisas Energeticas e Nucleares - IPEN/CNEN-SP
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Robinet, Laurianne. "The role of organic pollutants in the alteration of historic soda silicate glasses." Thesis, University of Edinburgh, 2006. http://hdl.handle.net/1842/1475.

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The stability of glass is linked to its composition and the atmosphere controls its alteration. The organic pollutants emitted by wooden showcases play a role in the alteration of historic glasses. This study examines the effects of acetic acid, formic acid and formaldehyde on objects from the National Museums of Scotland and on replica glasses aged artificially, all with a soda silicate composition. Composition was determined by electron microprobe and analytical decomposition of the Raman spectra was used to establish correlations between glass structure and composition. This allowed interpr
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Schmidt, Christian. "Experimental Study of the PVTX Properties in Part of the Ternary System H₂O-NaCl-CO₂." Diss., Virginia Tech, 1997. http://hdl.handle.net/10919/30610.

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Phase equilibria and volumetric properties in the system water-sodium chloride-carbon dioxide were determined experimentally for pressures between about 1 to 6 kbar, temperatures of 300° to 800°C, and fluid compositions up to 40 wt% NaCl and 20 mol% carbon dioxide, both relative to water. This was accomplished by using the synthetic fluid inclusion technique in conjunction with conventional microthermometry, a hydrothermal diamond-anvil cell and Raman spectroscopy. At constant salinity, the high-pressure portion of the solvus migrates to higher pressures and temperatures with increasing carbo
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Sgarbi, Stabellini Francesca. "Synthesis and surface characterization of metal (Mn, Ti) hexacyanoferrate electrodes." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2021. http://amslaurea.unibo.it/24378/.

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Due to the limited resources of lithium, new chemistries based on the abundant and cheap sodium and even zinc have been proposed for the battery market. Prussian Blue Analogues (PBAs) are a class of compounds which have been explored for many different applications because of their intriguing electrochemical and magnetic properties. Manganese and titanium hexacyanoferrate (MnHCF and TiHCF) belong to the class of PBAs. In this work, MnHCF and TiHCF electrodes were synthetized, cycled with cyclic voltammetry (CV) in different setups and subsequently, the surfaces were characterized with X-ray Ph
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