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Tesi sul tema "Ismer"

Autore: Grafiati

Pubblicato: 29 luglio 2024

Ultima modifica: 31 luglio 2024

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1

Back, Jenny. "TRÄNINGSBEROENDE - EN SAMBANDSSTUDIEAV POTENTIELLA MEKAN ISMER". Thesis, Högskolan i Halmstad, Akademin för hälsa och välfärd, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-30318.

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Studiens syfte var att studera träningsberoende i relation till ångest, depression, självkritik, passion, kroppstillfredsställelse och idrottsidentitet samt skillnader avseende dessa faktorer mellan individer med och utan träningsberoende. Vidare undersöktes om dessa faktorer kunde predicera träningsberoende. Datainsamling skedde via webbenkät. I studien deltog 124 individer, 62 män och 62 kvinnor. Enligt resultat på EDS-R kategoriserades 15 som träningsberoende, 100 som symptomatiska och 9 som icke träningsberoende. Resultatet visade signifikanta samband mellan träningsberoende, grad av träning, ångest, jämförande och internaliserad självkritik, harmonisk och tvångsmässig passion, AO samt idrottsidentitet. Vidare fanns skillnader mellan träningsberoende och icke träningsberoende gällande GLTEQ, regelbundenhet av fysisk aktivitet, genomsnittlig längd på träningspass, idrottslig ambitionsnivå, ångest, jämförande och internaliserad självkritik, tvångsmässig passion samt idrottsidentitet. Regressionsanalys visade att träningsmängd mätt i GLTEQ, genomsnittlig längd på träningspass, ångest, internaliserad självkritik, harmonisk och tvångsmässig passion förklarade 42 % av variansen hos variabeln träningsberoende. Sammantaget indikerade studiens resultat att träningsmängd, ångest, självkritik och passion kan vara mekanismer som är särskilt viktiga att beakta för att upptäcka, förebygga och behandla träningsberoende. Resultatet kan anses användbart exempelvis för idrottsföreningar, hälso- och träningsinstitutioner som sannolikt kommer i kontakt med träningsberoende individer. För dem kan studiens resultat ge kunskap som kan bidra till förståelse för vad träningsberoende är, hur individer i riskzonen kan upptäckas samt möjliga vägar till förebyggande och behandling.

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2

Haber, Tobias [Verfasser], Eva-Maria [Akademischer Betreuer] Bitzer, Bruno [Akademischer Betreuer] Ismer, Eva-Maria [Gutachter] Bitzer e Bruno [Gutachter] Ismer. "Ingenieurtechnische Lösungen für didaktische Simulationen zur Elektrotherapie des Herzens / Tobias Haber ; Gutachter: Eva-Maria Bitzer, Bruno Ismer ; Eva-Maria Bitzer, Bruno Ismer". Freiburg : Pädagogische Hochschule Freiburg, 2021. http://nbn-resolving.de/urn:nbn:de:bsz:frei129-opus4-9099.

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3

Ismer, Sven [Verfasser]. "Wie der Fußball Deutsche macht : Die Fußballweltmeisterschaft 2006 in der Fernsehberichterstattung / Sven Ismer". Frankfurt am Main : Campus Verlag, 2016. http://www.campus.de/home/.

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4

Haber, Tobias [Verfasser], Prof Dr med habil Eva-Maria [Akademischer Betreuer] Bitzer, Prof Dr rer nat habil Bruno [Akademischer Betreuer] Ismer, Prof Dr med habil Eva-Maria [Gutachter] Bitzer e Prof Dr rer nat habil Bruno [Gutachter] Ismer. "Ingenieurtechnische Lösungen für didaktische Simulationen zur Elektrotherapie des Herzens / Tobias Haber ; Gutachter: Prof. Dr. med. habil. Eva-Maria Bitzer, Prof. Dr. rer. nat. habil. Bruno Ismer ; Prof. Dr. med. habil. Eva-Maria Bitzer, Prof. Dr. rer. nat. habil. Bruno Ismer". Freiburg : Pädagogische Hochschule Freiburg, 2021. http://d-nb.info/1241326789/34.

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5

Ismer, Britta [Verfasser], e David [Akademischer Betreuer] Jones. "Novel gene fusions identified as new drug targets in paediatric glioma and their pre-clinical characterisation / Britta Ismer ; Betreuer: David Jones". Heidelberg : Universitätsbibliothek Heidelberg, 2018. http://d-nb.info/1177044870/34.

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6

Ismer, Jan-Peter [Verfasser], Ilya [Gutachter] Eremin e Dirk [Gutachter] Manske. "Coexistence of superconductivity and density waves in quasi-two-dimensional metals / Jan-Peter Ismer ; Gutachter: Ilya Eremin, Dirk Manske ; Fakultät für Physik und Astronomie". Bochum : Ruhr-Universität Bochum, 2011. http://d-nb.info/1223171779/34.

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7

Gray-Jones, Craig. "Isomer spectroscopy of ²⁵⁴No". Thesis, University of Liverpool, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.501596.

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A number of experiments were carried out to clarify the structure and decay path of an isomeric state in ²⁵⁴No [Gh73, He06, Ta06]. A band built on the 1298 keV Kπ = 8- isomer was found. From the observed branching ratios in this band a two-proton configuration is favoured for this state, which further supports our earlier conclusions [He08] that the deformed shell closures in this mass region are at Z = 100 and N = 152, in contradiction to predictions by Skyrme-Hartree-Fock models [Cha06]. Furthermore, the level scheme of ²⁵⁴No was extended to include a floating band and a systematic of reduced hindrance factors for ΔΚ = 8 E1 transitions is given.

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8

Torma, Krisztián Gabor. "I3: Isomerization of Isomer Ions". Scholarly Commons, 2019. https://scholarlycommons.pacific.edu/uop_etds/3649.

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Photoelectron Photoion Coincidence (PEPICO) spectroscopy is a robust tool for elucidating complex unimolecular dissociation mechanisms and for determining thermochemical and kinetic data of gas-phase ion dissociations with high accuracy. In this work, the dissociative photoionization of two sets of isomeric systems were analyzed with PEPICO: 1) C7H7+ ions of toluene (Tol) and 1,3,5-cycloheptatriene (CHT), and 2) two butyl alcohol isomers, 1-butanol and isobutanol. Threshold dissociative photoionization data on these four molecules of interest were collected on the imaging PEPICO apparatus at the VUV beamline of the Swiss Light Source. Data analysis was aided by ab initio calculations and Rice-Ramsperger-Kassel-Marcus (RRKM) statistical rate theory was employed to model the complex dissociation pathways of each system. Finally, thermochemical, reaction mechanism, and dissociation kinetics data were extracted from the modeled data and are reported here. In the first project, the dissociation of energy-selected 1,3,5-cycloheptatriene (CHT) and toluene (Tol) cations was investigated by imaging photoelectron photoion coincidence spectroscopy. In the measured energy ranges of 10.30−11.75 eV for CHT and 11.45−12.55 eV for Tol, only the hydrogen atom loss channels open up, leading to C7H7+ from both molecular ions, which are both metastable at the H-loss threshold. Our quantum chemical calculations showed that these ions can interconvert below their dissociation thresholds. Therefore, we constructed a single statistical model to describe both systems simultaneously. We determined 0 K appearance energies (E0) for the tropylium and benzyl fragment ions from CHT to be 9.520 ± 0.060 eV and 9.738 ± 0.082 eV, and from Tol to be 10.978 ± 0.063 eV and 11.196 ± 0.080 eV, respectively. Using the experimentally determined benzyl ion appearance energy, its 0 K heat of formation was calculated to be 937.9 ± 7.7 kJ mol–1. On the basis of this value and the recently determined benzyl ionization energy, we point out discrepancies concerning the benzyl radical thermochemistry. For the second project, the fragmentation processes of two internal energy-selected C4H10O+• cations, 1-butanol and isobutanol, were investigated. For both isomers, the first dissociation channel leads to the formation of C4H8+• ions (m/z = 56) by a water loss. Using statistical energy distribution and rate models, which include isomerization of the molecular ions, the 0 K appearance energies (E0) were determined to be 10.347 ± 0.015 eV and 10.566 ± 0.050 eV, for 1-butanol and isobutanol, respectively. The second dissociation channel, the formation of CH3OH2+, quickly overtakes the water-loss channel in isobutanol, with an E0 of 10.612 ± 0.020 eV, but appears only as a minor channel in 1-butanol with an E0 of 10.738 ± 0.080 eV. The methanol-loss channel, forming propylene ion, opens up at E0 = 10.942 ± 0.040 eV and 10.723 ± 0.020 eV in 1-butanol and isobutanol, respectively. The next two fragmentation pathways correspond to a complementary pair of C3H7+ through the loss of CH2OH, and CH2OH+ through the loss of C3H7. From both isomers, C3H7+ is the isopropyl ion, which is readily formed in isobutanol via a simple bond cleavage at E0 = 10.970 ± 0.050 eV and its pair, CH2OH+, at E0 = 11.11 ± 0.20 eV. However, there is an internal hydrogen shift necessary in 1-butanol and, therefore, the complementary ions appear at the same E0 of 11.104 ± 0.030 eV, which most likely corresponds to their common transition state. Finally, C3H5+, a product of sequential dissociation from m/z = 56, appears above 11.6 eV as a minor channel for both isomers.

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9

Lloyd, Bissell. "Collinear laser spectroscopy of the 178Hf S- isomer and the 18<>-ra naturally occurring isomer". Thesis, University of Birmingham, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.487474.

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The work presented in this thesis was conducted as part of an ongoing investigation into the properties of multi quasiparticle isomers. Specifically, collinear laser spectroscopy was perfonned on singly ionized 178Hf. Laser induced fluorescence spectra of the 301.3 nm transition were recorded from which the isomer shift between the 178Hf ground state and the r=s- isomer was obtained along with the hyperfine structure associated with this isomer, With these measurements it was possible to detennine the change in mean square charge radius between the ground state and isomer and also its magnetic and elec;:trostatic quadrupole moments. The observed properties of this isomer have been used in conjunction with measurements ofother isomeric systems to explore the origins of the decrease in charge radii of multi quasi-particle isomers, a phenomenon observed in all systems ofthis type measured to date. With the objective of extending this work on the properties ofmulti quasi-particle isomers, off-line measurements of transitions in singly charged Ta were conducted. Strong second order contributions to the hyperfine structures were observed. With a full description of these contributions, it was possible to unambiguously detennine the spin of the 18<>-ra naturally occurring isomer along with its magnetic and electrostatic quadrupole moments.

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10

Kohler, George Y. "Ismar Schorsch, Leopold Zunz: Creativity in Adversity". HATiKVA e.V. – Die Hoffnung Bildungs- und Begegnungsstätte für Jüdische Geschichte und Kultur Sachsen, 2017. https://slub.qucosa.de/id/qucosa%3A34732.

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11

Isemer, Rena [Verfasser]. "Die WHIRLY-Proteine von Arabidopsis thaliana / Rena Isemer". Kiel : Universitätsbibliothek Kiel, 2013. http://d-nb.info/1043957642/34.

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12

Terent'ev, Aleksandr V. "Theoretical investigation of excited states of C 3 and pathways for the reaction C 3 + C 3 = C 6". [S.l. : s.n.], 2005. http://www.bsz-bw.de/cgi-bin/xvms.cgi?SWB12046013.

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13

Ҫelik, Murat. "The ethics of reading : Ingarden, Iser, Ricoeur". Thesis, University of Sussex, 2017. http://sro.sussex.ac.uk/id/eprint/67289/.

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This thesis explores the ethical impact of literary narrative fictions on the reader. It does so by focusing mainly on the reading experience since one of the main claims of the thesis is that literary narrative fictions are co-products of the author and the reader. In that sense the aforementioned impact cannot be understood without taking into account the creative acts of the reader. The exploration is carried out by focusing on three scholars whose investigations on the problem of literary experience can be read as complementary works. In the first chapter I descriptively lay out Roman Ingarden's investigation on the ontological and structural character of the literary work of art along with his phenomenological inquiry into the cognition of this work. By examining his basic claims about the nature of the literary work of art and its cognition, I discuss the ontological incompleteness of these works which necessitates the active role of the reader in giving the work its final shape. In the second chapter I focus upon Wolfgang Iser's reader-response theory. Iser's theory goes parallel to Ingarden's in the sense that they both accept the openness of the work to the creative acts of the reader. Iser, however by his notions of depragmatization, negation and negativity suggest us a two-way traffic between the fictional work and the reader. Through the reading proses, by virtue of the negations and de-pragmatizations, the work invites the reader to reflect on the familiar norms it represents and suggest to her a new model to understand the real world. In this way, while giving a shape to the work, the reader is also shaped by it. The third chapter addresses the phenomenological hermeneutics of Paul Ricoeur. By exploring his notion of “narrative identity” as a mediator between the ipse and idem identities, my aim is to show the influence of the literary fictional narratives in understanding the identity of the individual subject as a temporal, historical, and intersubjective being. It is only through this understanding that we can construe the subject in her ethical identity. I will also focus on Ricoeur's notions of “emplotment,” and “threefold mimesis,” which implies the active role of the reader in realizing the literary narrative fiction, so that I can reveal how fictional narratives enhance the notion of narrative identity.

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14

Starovoytov, A. A., E. N. Kaliteevskaya, V. P. Krutyakova e T. K. Razumova. "Influence of Substituent in Conjugated Chain of Molecules on Nanocomponents Composition of Polymethine Dye Films". Thesis, Sumy State University, 2012. http://essuir.sumdu.edu.ua/handle/123456789/34890.

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Molecular layers of polymethine dye long conjugation chain on glass contain several types of molecular nanocomponents. The number and type of the components depend on the thickness of a layer. In thin layers, only monomolecular components (all-trans-stereoisomers and cis-isomers) are present. We studied a series of four dicarbocyanines and determined the steric structure of the nanocomponents of the layers. The layers of less than 1 monolayer thick contain up to 4 monomeric components. For monocis- and dicisisomers of the dyes studied, which are obtained from the all-trans form upon rotation of fragments of a molecule around different bonds in the conjugated chain, the steric models were constructed. It was shown that in the series of polymethine molecules differing in the substituents and their positions in the chain there is a correlation between the intensity of the absorption bands of the certain components and the steric hindrance of molecular isomers. The above correlation may be used for the determination of the steric structure of monomeric components of the layer. When you are citing the document, use the following link http://essuir.sumdu.edu.ua/handle/123456789/34890

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15

Agabalian, Grigory. "Suffixation en -ISME et construction d'un sens valorisationnel". Electronic Thesis or Diss., Université Paris Cité, 2019. http://www.theses.fr/2019UNIP5167.

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La thèse a pour objet d'étude le sens valorisationnel construit par la suffixation en -ISME en français. Ce sens consiste en une valorisation de ce que représente la base (par exemple POPULISME a pour sens valorisationnel 'valorisation de ce que représente PEUPLE') et concerne essentiellement les noms de doctrines, de théories, de religions, de mouvements et certains noms d'attitudes formés par suffixation en -ISME. L'objectif est de proposer un modèle de description pour ce sens. Après avoir posé les fondements théoriques généraux nécessaires à la description de ce sens et après avoir présenté les travaux déjà effectués, nous développons différentes hypothèses concernant ce sens valorisationnel. Ainsi, nous défendons 1) que ce sens est construit dans un contexte de rivalité entre ce que représente la base et autre chose, 2) que la suffixation en -ISME permet de transformer des discours en noms, 3) que les noms en -ISME concernés par ce sens ne forment pas une classe sémantique, 4) qu'il existe deux types de sens valorisationnel (modal et attitudinal), 5) que la base peut représenter aussi bien l'objet valorisé que l'agent qui valorise et 6) que tout nom dont la forme se termine par le segment -isme peut, formellement, faire l'objet d'une interprétation valorisationnelle
This dissertation is a study of the valorizational sense constructed by the suffixation in -ISME in French. That sense consists in a valorization of what the base represents (for instance POPULISME has the valorizational sense 'valorization of what PEUPLE represents') and is essentially that of the nouns of doctrines, theories, religions, movements and some nouns of attitudes formed by the suffixation in -ISME. The aim of the dissertation is to offer a model of description for that sense. After having established some necessary theoretical bases and reviewed former research, I develop different hypotheses about the valorizational sense. Thus, I champion the following ideas: 1) the valorizational sense is constructed in a context of rivalry opposing what the base represents to something else, 2) the suffixation in -ISME allows to turn discourses into nouns, 3) the nouns with the valorizational sense don't form a semantic class, 4) two types of valorizational sense exist (modal and attitudinal), 5) the base can represent either the object or the agent of valorization and 5) any noun ending with the segment -isme can formally be interpreted with a valorizational sense

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16

Aktas, Ismet [Verfasser], Klaus [Akademischer Betreuer] Wehrle e Jörg [Akademischer Betreuer] Widmer. "Harnessing cross-layer design / Ismet Aktas ; Klaus Wehrle, Jörg Widmer". Aachen : Universitätsbibliothek der RWTH Aachen, 2015. http://d-nb.info/1125910631/34.

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17

Steer, Steven John. "Isomer decay spectroscopy of N<126 neutron-rich nuclei". Thesis, University of Surrey, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.493243.

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18

Chafin, Raymond William II. "Torlon® and Silicalite Mixed Matrix Membranes for Xylene Isomer Purification". Diss., Georgia Institute of Technology, 2007. http://hdl.handle.net/1853/14562.

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Organic/inorganic materials have a high potential to enable major advances in membrane performance. It has previously been impossible to develop polymeric systems with adequate transport properties for xylene purification. Zeolite membranes have been created with the appropriate selectivities; however low productivity, low mechanical durability, and high capital costs have kept these materials from being utilized. So-called mixed matrix hybrid organic/inorganic membranes combine the mechanical durability and cost effectiveness of polymeric membranes with the enhanced performance of zeolitic structures. This project will focus on investigating polymeric and molecular sieve materials for mixed matrix membrane use in xylene isomer separation as a model system. Torlon polyamide-imide has unique properties that should be potentially useful in a mixed matrix composite. Silicalite will be investigated as the dispersed phased given its proven applicability with xylene isomers. The overarching goal is to establish an approach for creation of mixed matrix materials that can be broadly applied to challenging organic separations. This project has three specific goals: (1) characterization of Torlons inherent properties, processing ability, and important transport potential, (2) characterization of zeolite matching properties and the effect of interfacial engineering on these properties, and (3) development of appropriate approaches to combine the sieve and polymer to obtain a hybrid material with properties that match theoretically predicted separation property enhancements relative to the neat polymer. High temperature pervaporation will be used to evaluate material transport properties, as this experimental setup closely mimics the high activity vapor streams found in many industrial xylene processes. The results of this research will be used to develop a protocol for development of future mixed matrix membranes that may be applied to a variety of organic liquid systems.

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19

Ecker, Josef. "Isomer specific effects of conjugated linoleic acid on macrophage ABCG1 expression". kostenfrei, 2007. http://www.opus-bayern.de/uni-regensburg/volltexte/2008/898/.

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20

Brassat, Julia Sonja. "Filling the silence an Iserian reading of Ilse Aichinger's work /". Morgantown, W. Va. : [West Virginia University Libraries], 2006. https://eidr.wvu.edu/etd/documentdata.eTD?documentid=4634.

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Thesis (M.A.)--West Virginia University, 2006.
Title from document title page. Document formatted into pages; contains vi, 88 p. : ill. Includes abstract. Includes bibliographical references (p. 85-88).

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21

Fremann, Dorothee. "Konjugierte Linolsäuren Zufuhr und Verteilung in den Plasmalipidfraktionen beim Menschen /". [S.l.] : [s.n.], 2000. http://deposit.ddb.de/cgi-bin/dokserv?idn=961364076.

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22

IWATA, HISASHI, MASARU OHASHI e HIROSHI SHIGENO. "Glycosaminoglycan in Liver and Spleen of Casein-Induced Experimental Amyloidosis of Mice". Nagoya University School of Medicine, 1985. http://hdl.handle.net/2237/17484.

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23

Emerton, Duncan Alan Neil. "Biotransformations of acyclic monoterpene alcohols : the search for biocatalytic routes to aromatic cyclic ethers". Thesis, University of Kent, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.311225.

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24

Kelly, Sam. "New techniques and data acquisition for nuclear spectroscopy at the laser-IGISOL". Thesis, University of Manchester, 2018. https://www.research.manchester.ac.uk/portal/en/theses/new-techniques-and-data-acquisition-for-nuclear-spectroscopy-at-the-laserigisol(57934c38-263a-4bee-8ee4-6273d0919017).html.

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Nuclear and laser spectroscopy measurements have been conducted at the Ion Guide Isotope Separator On-Line, IGISOL-IV, JYFL laboratory, Jyvaskyla. Nuclear moments have been extracted for two ground and two isomeric states of neutron deficient yttrium, 85g,mY and 86g,mY. The mean square charge radii and moments have been extracted for all states, providing, for the first time, estimates of static and dynamic quadrupole deformations in these shape transitioning nuclei. A second laser spectroscopy experiment yielded the frequency shifts between all stable isotopes of ionic ytterbium in exotic (high-lying metastable) resonance lines. Atomic field and mass shift parameters in these (high purity) transitions have been evaluated. A discussion of the impact these parameters may have on the chemical homologue, nobelium, is presented. New measurements of charge-state dependent IGISOL fission production yields (of strontium, yttrium and zirconium) are reported in this thesis. For the first time, charge state dependent effects in relative isomeric to ground state production have been detected. Possible explanations for, and exploitation of, this unexpected phenomenon is presented. A new data acquisition (DAQ) system has been built at The University of Manchester. It has been designed to fully replace the current setup used for laser spectroscopy at the JYFL laboratory. The new hardware has been extensively tested off-line and is ready to be installed at the laser-IGISOL. To work in conjunction with the new DAQ, two graphical user interfaces (GUIs) have been created, to display and sort data online, and permit efficient data extraction. Both have been shown to perform at the level required for experimental on-line use. An updated report on the status of an electrostatic ConeTrap is presented. Improved (more realistic) simulations are now seen to be capable of reproducing experimentally observed results. Further computational effort on the ion optics has shown that improved containment and transport efficiency can be readily achieved. A new trap, featuring a larger rear electrode, promises a greatly increased ion survival. The next commissioning phase will see the construction and installation of this upgraded ConeTrap.

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Brock, Timothy Stephen. "Isomer and B-decay studies of very neutron-deficient 94Pd and 97Cd". Thesis, University of York, 2011. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.542829.

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26

Victor, Laikyn. "Investigating the possible cytoprotective effects of melatonin isomer against simulated ischemic injury". Master's thesis, University of Cape Town, 2017. http://hdl.handle.net/11427/26869.

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Introduction: The presence of melatonin in wine contributes to the cardioprotective effect of regular and moderate consumption of wine against lethal ischemia/reperfusion injury. Recently, the presence of melatonin isomers has been identified in red wine, but whether or not these isomers confer any physiological properties is unknown. Aim: The aim of our study was to establish a cell culture model of simulated ischemia to study and compare the possible cytoprotective effects of dietary melatonin and a melatonin isomer against an ischemic insult and to explore the possible role of melatonin receptors in this effect. Methods: H9C2 cardiac fibroblast cells were subjected to simulated ischemia by exposure to 1mM H₂O₂ following a 30min pre-treatment with 75ng/L (dietary concentration), 1μM (pharmacological concentration, 0.232mg/L) melatonin or/and 75mg/L (dietary concentration) melatonin isomer. To determine the role of melatonin receptors, cells were pre-treated with the melatonin receptor inhibitor, luzindole (10 μM) for 1h prior to H₂O₂ treatment. At the end of the simulated ischemic insult, cell viability was assessed using trypan blue staining. Mitochondrial respiration in permeabilized H9C2 cells was measured using the Oroboros Instrument, at two different time points: at the end of a 30min pre-treatment with either 75ng/L melatonin or 75mg/L melatonin isomer, or the afore mentioned pre-treatments prior to a 15min treatment of 1mM H₂O₂. Results: A simulated ischemic insult with 1mM H₂O₂ reduced cell viability from 92.9±1.5% to 28.4±1.4% (p<0.001 vs control). Pre-treatment with the dietary concentrations of melatonin or the melatonin isomer improved the cell viability to a similar extent as a pre-treatment with the pharmacological concentration of melatonin (74.4±3.1%, 73.9±2.7% and 69.0±1.2%, p<0.001 vs H₂O₂ and p<0.01 vs H₂O₂ respectively). A combined pre-treatment of melatonin and the melatonin isomer did not add further cytoprotective benefit. Addition of luzindole fully abolished the cytoprotective effect of dietary melatonin (29.7±2.4%, p<0.001 vs H₂O₂ + Mel), but only partially abolished the cytoprotective effect of the melatonin isomer (41.4±3.6%). Both dietary concentrations of melatonin and the melatonin isomer did not affect mitochondrial respiration in permeabilized H9C2 cells. Conclusion: Our findings suggest that both dietary melatonin and the melatonin isomer confer cytoprotection against a simulated ischemic insult, an effect which is mediated, at least in part, via the activation of melatonin receptors. Both melatonin and melatonin isomers present the advantage to be potentially safe and inexpensive therapies against ischemic heart disease.

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Li, Shulan. "Synthesis, characterization and capillary electrophoretic use of new, single-isomer hexasulfated alpha-cyclodextrins". Diss., Texas A&M University, 2003. http://hdl.handle.net/1969.1/2200.

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The first three, pure, single-isomer, 6-O-sulfo a-cyclodextrins, the sodium salts of hexakis(6-O-sulfo)-a-CD (HxS), hexakis(2,3-di-O-methyl-6-O-sulfo)-a-cyclodextrin (HxDMS) and hexakis(2,3-di-O-acetyl-6-O-sulfo)-a-cyclodextrin (HxDAS) have been synthesized, analytically characterized and utilized as chiral resolving agents in capillary electrophoresis. The purity of each synthetic intermediate and of the final product was determined by HPLC-ELSD and indirect UV-detection capillary electrophoresis. The structural identity of each intermediate and final product was verified by 1D and 2D NMR, and mass spectrometry.HxS, HxDMS and HxDAS have been used to separate a series of neutral, basic, ampholytic and acidic enantiomers in pH 2.5 and pH 9.5 aqueous and acidic methanol background electrolytes using capillary electrophoresis. Rapid separations with satisfactory peak resolution values were obtained for most of the analytes, indicating that HxS, HxDAS and HxDMS can serve as chiral resolving agent for a wide range of analytes. The observed separation patterns follow the predictions of the CHArged Resolving agent Migration (CHARM) model. The separation patterns observed with HxS, HxDAS and HxDMS as chiral resolving agent were compared with those of (1) b-cyclodextrin analogues, such as, heptakis(6-O-sulfo)-b-cyclodextrin (HS), heptakis(2,3-di-O-acetyl-6-O-sulfo)-b-cyclodextrin (HDAS) and heptakis(2,3-di-O-methyl-6-O-sulfo)-b-cyclodextrin (HDMS); (2) g-cyclodextrin analogues, such as, octakis(6-O-sulfo)-g-cyclodextrin (OS), octakis(2,3-di-O-acetyl-6-Osulfo)- g-cyclodextrin (ODAS) and octakis(2,3-di-O-methyl-6-O-sulfo)-g-cyclodextrin (ODMS). The effects of the structure of the analytes, and those of the pH and the solvent of the background electrolyte were also studied.

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28

Liu, Junqiang. "Development of next generation mixed matrix hollow fiber membranes for butane isomer separation". Diss., Georgia Institute of Technology, 2010. http://hdl.handle.net/1853/42807.

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Mixed matrix hollow fiber membranes maintain the ease of processing polymers while enhancing the separation performance of the pure polymer due to inclusion of molecular sieve filler particles. This work shows the development process of high loading mixed matrix hollow fiber membranes for butane isomer separation, from material selection and engineering of polymer-sieve interfacial adhesion to mixed matrix hollow fiber spinning. The matching of gas transport properties in polymer and zeolite is critical for forming successful mixed matrix membranes. The nC4 permeability in glassy commercial polymers such as Ultem® and Matrimid® is too low (< 0.1 Barrer) for commercial application. A group of fluorinated (6FDA) polyimides, with high nC4 permeability and nC4/iC4 selectivity, are selected as the polymer matrix. No glassy polymers can possibly match the high permeable MFI to make mixed matrix membranes with selectivity enhancement for C4s separation. Zeolite 5A, which has a nC4 permeability (~3 Barrer) and nC4/iC4 selectivity (essentially ∞), matches well with the 6FDA polymers. A 24% nC4/iC4 selectivity enhancement was achieved in mixed matrix membranes containing 6FDA-DAM and 25 wt% treated 5A particles. A more promising mixed matrix membrane contains 6FDA-DAM-DABA matrix and 5A, because of a better match of gas transport properties in polymer and zeolite. Dual layer hollow fibers, with cellulose acetate core layer and sheath layers of 6FDA polyimides, were successfully fabricated. Successive engineering of the 6FDA sheath layer and the dense skin is needed for the challenging C4s separation, which is extremely sensitive to the integrity of the dense skin layer. The delamination-free, macrovoid-free dual layer hollow fiber membranes provide the solution for the expensive 6FDA polyimides spinning. Mixed matrix hollow fiber membranes are spun base on the platform of 6FDA/Cellulose acetate dual layer hollow fibers. Preliminary results suggest that high loading mixed matrix hollow fiber membranes for C4s is feasible. Following research is needed on the fiber spinning with well treated zeolite 5A nanoparticles. The key aspect of this research is elucidating the three-step (sol-gel-precipitation) mechanism of sol-gel-Grignard treatment, based on which further controlling of Mg(OH)2 whisker morphologies is possible. A Mg(OH)2 nucleation process promoted by acid species is proposed to explain the heterogeneous Mg(OH)2 growing process. Different acid species were tried: 1) HCl solution, 2) AlClx species generated by dealumination process and 3) AlCl3 supported on zeolite surfaces. Acids introduced through HCl solution and dealumination are effective on commercial 5A particles to generate Mg(OH)2 whiskers in the sol-gel-Grignard treatment. Supported AlCl3 is effective on both commercial and synthesized 5A particles (150 nm-1 µm) during the sol-gel-Grignard treatment, in terms of promoting heterogeneous Mg(OH)2 whiskers formation. But the byproduct of Al(OH)3 layer separates the Mg(OH)2 whiskers from zeolite surface, and leads to undesirable morphologies for polymer-zeolite interfacial adhesion. The elucidation of sol-gel-Grignard mechanism and importance of zeolite surface acidity on Mg(OH)2 formation, builds a solid foundation for future development towards ''universal'' method of growing Mg(OH)2 whiskers on zeolite surfaces.

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29

Mason, Peter J. R. "Recoil-isomer tagging of extremely neutron-deficient nuclei, 142 Tb and 144 Ho". Thesis, University of Manchester, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.506592.

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30

Fobi, Kwabena, Bronson Lynn e Abbas Gholipour Shilabin. "Extraction, Purification, and Characterization of Radioprotective Agent gamma-Tocotrienol Isomer in Palm Oil". Digital Commons @ East Tennessee State University, 2019. https://dc.etsu.edu/asrf/2019/schedule/188.

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The clinical consequences of ionizing radiation exposure remain one of the leading causes of death in the United States. Much research has been carried out to discover a potential countermeasure for acute radiation syndrome (ARS) without success. The United States Food and Drug Administration (US FDA) has not accepted any effective and harmless ionizing radiation therapy agents (radioprotectors) for treating ARS. It has recently been discovered that g-tocotrienol (GT-3), one of the E vitamers chiefly present in palm oil, has radioprotective abilities in mice and nonhuman primate (NHP) models. Though GT-3 is one of the most promising countermeasures discovered, the separation and purification from other vitamers or its matrix is difficult. This has limited its characterization, derivatization, and biomedical application. We have therefore designed novel chromatographic methods to optimize separation and purification. Thin layer chromatography (TLC) was used to ascertain the best solvent system for column chromatography (CC). Exactly 8% ethyl acetate in hexane employed in TLC and CC resulted in good separation (Rf ≥ 0.3) and purification. Various fractions presumed to contain GT-3 were collected and analyzed to confirm the exact structure using 1H NMR, 13C NMR, DEPT, and GC-MS. Results obtained so far have revealed the exact structure of the compound. However, some traces of impurities have been indicated by the NMR outcomes; therefore, high-performance liquid chromatography (HPLC) will be used to maximize GT-3 purification. This present study will be instrumental in elucidating the biochemical structure of various complex plant bioactive components that are hard to isolate and analyze. It is envisioned that this work will help to erase the knowledge deficit in medicinal chemistry and assist in the development of new medications for ARS.

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31

Gulliksson, Håkan. "Transformerande litteratur : Modellering via läsupplevelse och fiktiva världar". Thesis, Umeå universitet, Institutionen för kultur- och medievetenskaper, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-160161.

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I uppsatsen tas en modell fram för skillnaden mellan den värld som gestaltas i en skönlitterär text och den vi upplever i vardagen, en skillnad som skulle kunna transformera en läsare. Modellen som presenteras baseras på Wolfgang Isers teori om läsupplevelsen och Nelson Goodmans teori om fiktiva världar. För att testa modellen appliceras den på en nyskriven utopisk roman där tekniken spelar en betydande roll.

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32

Schneider, Jan-Christoph. "Neue mesoionische Azapentalene 2H-Pyrrolo[2,1-c][1,2,4]triazole ; mit Untersuchungen zum 1H-Isomer /". kostenfrei, 2006. http://www.digibib.tu-bs.de/?docid=00011592.

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33

Bice, Ismet [Verfasser]. "Optimierung der biosynthetischen Produktion von Polysialinsäure und Oligosialinsäure aus Escherichia coli K1 / Ismet Bice". Hannover : Technische Informationsbibliothek und Universitätsbibliothek Hannover (TIB), 2012. http://d-nb.info/1023627744/34.

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34

Schiffers, Stefanie. "Time resolved crystallographic studies". Thesis, University of Bath, 2010. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.521018.

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X-ray crystallography is an important analytical method for the characterisation of materials in the solid state. During the last decade, it has become important as a tool in the new field of photocrystallography. This combines both crystallography and photochemistry and is used to monitor the formation of light-induced metastable and transient species, so that structural information can be obtained during the change of a material. This is an important area of research as solid state chemistry can display new phenomena and reveal properties that are not possible in solution. Chapter 1 of this thesis commences with a brief introduction to the different methods used to achieve and measure the excitation within crystalline compounds, while Chapter 2 contains an introduction into diffraction methods. In Chapters 3-5 new photocrystallographic studies were performed on two series of compounds. The first one consists of a systematic study on metal complexes with different pyridylethylene ligands. The focus was to align complexes in the solid state so that they can undergo photo induced cycloaddition reactions. These solid state reactions are important as they present “green synthetic chemistry”. The second study involves the photoinduced linkage isomerisation of [Ni(L)2(NO2)2] complexes. Structural characterisation shows that the NO2 ligands change their coordination mode when irradiated with light of different wavelengths. Conditions for the metastable isomerisation were optimised by altering temperature and wavelengths. In Chapters 6 and 7 a systematic study of structural changes in a series of lanthanide complexes and their use as triboluminescence materials, is described. The proposed mechanism of triboluminescence for these complexes is discussed. To summarise, in this thesis, systematic investigations have been carried out in different aspects of crystallography using appropriate series of compounds. The nature of and the conditions required for the change to occur within the solid state have been established.

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35

Nzeadibe, Kingsley C. I. "Synthesis of new, single-isomer quaternary ammonium derivatives of beta-cyclodextrin for electrophoretic enantiomer separations". Texas A&M University, 2003. http://hdl.handle.net/1969.1/5833.

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The isolation of individual enantiomers of drugs is an important subject of interest in the pharmaceutical and medical fields, because stereochemistry can have a significant effect on the biological activity of the drug. Therefore, it is important to develop enantiomeric separation methods for the determination of the optical purity of drugs, since the undesired enantiomer is regarded as one of the impurities. The available single isomer anionic cyclodextrins (CD) can resolve the enantiomers of only a few weakly acidic analytes. To rectify this problem, the chloride salts of heptakis(6-deoxy-6-morpholinio)-cyclomaltoheptaose (HMBCD), and mono(6- deoxy-6-N,N,N r,N r,N r-pentamethylethylenediammonio)-cyclomaltoheptaose (PEMEDA-BCD), the first members of the permanently charged, single-isomer cationic cyclodextrin family, have been synthesized. The purity of process intermediates and final products was determined by HPLC-ELSD and indirect UV-detection capillary electrophoresis. Structural identity was verified by 1D and 2D NMR and massBoth cationic CD derivatives have been used for the separation of the enantiomers of strong acid, weak acid, weak base, ampholytic, and neutral analytes by capillary electrophoresis. Because the charge state of these cationic chiral resolving agents is independent of the pH of the buffer, separation could be performed in both low and high pH buffers without compromising the charge density of the resolving agent. Contrary to expectation, the multiply charged HMBCD showed poor complexation with the newly synthesized strong electrolyte test analytes. The weak binding between the analytes and HMBCD resulted in separation of enantiomers of only three strong electrolyte analytes. Strong complexation was observed between PEMEDA-BCD and the anionic and nonionic analytes in both low and high pH buffers, though complexation was stronger in the high pH buffer. Due to strong complexation between the anions and PEMEDA-BCD, only low concentrations of the resolving agent were required to effect good enantiomer resolutions. spectrometry.

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36

Khan, Shehzad. "Recoil isomer tagging on seniority in the mass 150 region using new dual-MWPC setup". Thesis, University of Manchester, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.493559.

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37

Al-Dahan, Nawras M. S. "Isomer and (beta)-delayed gamma-ray spectroscopy for structure studies of heavy, neutron-rich nuclei". Thesis, University of Surrey, 2010. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.520560.

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38

Gottardo, Andrea. "Isomer decay spectroscopy in the region of neutron-rich lead isotopes from relativistic 238U fragmentation". Doctoral thesis, Università degli studi di Padova, 2012. http://hdl.handle.net/11577/3425455.

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The present thesis describes the results of an experiment which was performed at the GSI laboratory, Darmstadt, Germany in September 2009, aiming at studying neutron-rich nuclei in the region of lead nuclei. In the introduction the main modern research lines on nuclear structure are briefly described. A particular attention is devoted to the study of exotic nuclei, i.e. of nuclei far from the valley of stability. They are one of the most important themes of research in nuclear physics since their study may point out details of the nuclear interaction not easy to disentangle investigating only stable nuclei. Moreover, significant modifications of the nuclear structure are expected, as the disappearance of the known magic numbers and the appearance of new ones. The study of neutron-rich nuclei is also fundamental to quantitatively understand the nucleosynthesis of heavy elements via the rapid process thought to happen in supernovae. However, the study of exotic nuclei is hampered by many difficulties, concerning both their production and their measurement. The region of neutron-rich lead nuclei, which is the object of the present thesis, has proved quite complicate to study due to the fact that these isotopes cannot be populated via fusion-evaporation or deep-inelastic reactions using stable beams. Therefore, other production mechanisms must be exploited, as the fragmentation reactions. The drawbacks of this method are the low production cross sections and the necessity of using high-energy uranium beams (1 GeV A) in order to facilitate the separation in mass and atomic number. As a consequence, the neutron-rich isotopes around doubly-magic 208Pb have been less investigated with respect to regions with lower mass, as for example those around doubly-magic 132Sn and 78Ni. Nevertheless, these isotopes are very important. On the one hand, they are fundamental for evaluating the evolution of the nuclear shell structure beyond N = 126. On the other hand, the measurement of the beta half lives of these nuclei is of paramount importance to better parameterize the models from which the half lives of the nuclei directly involved the rapid process stellar nucleosynthesis have to be extrapolated. The exotic nuclei close to lead were produced by the fragmentation of a relativistic uranium beam at an energy of 1 GeV A. The available energy and beam current, around 10^9 particles per second (pps), allowed to cope with the aforementioned mass separation issue and to have a sufficient production yield, despite the low cross sections. The reaction products were separated with the mass spectrometer FRagment Separator (FRS), which allows one to select the channels of interest and to identify, event by event, the produced ions in mass and atomic number. The identified fragments were then slowed down in a degrader and implanted in double-sided silicon-strip detector, which allows one to measure the time and the position of the implantation. This array also detects the beta decay of the implanted isotopes, by revealing the produced electrons. This implantation setup is surrounded by the high-efficiency array RISING, composed of 105 germanium crystals. Its purpose is to measure energy and time of the gamma rays emitted in the isomer or beta decay of the implanted ions. Employing the described setup, new isomers in the even-even lead isotopes 212;214;216Pb were identified. The excitation spectrum of such nuclei, observed for the first time, follows the seniority scheme as expected for semi-magic nuclei outside a double shell closure. From the measurement of the isomer lifetimes the electromagnetic transition matrix elements are deduced. They are a sensitive probe of the nuclear wave function and hence their comparison with theoretical predictions indicates to which extent the nuclear models employed are able to reproduce the nuclear structure. The observed significant experimental discrepancies with the shell-model calculations (derived from realistic nuclear hamiltonian with state-of-the-art shell-model codes) require the introduction of state-dependent effective charges. It is shown that this need is actually the result of neglecting of effective three-body forces. These forces appear when an interaction is adapted to a certain valence space, but are almost always not considered as they are thought to produce negligible effects. In the present thesis it is proved that, on the contrary, these forces can produce significant changes on the final results of the calculations. Isomers were also observed in 217Bi, 213Pb, 211;213Tl and 208;210Hg. The assignment of spin and parity to the levels in 217Bi and 208Hg was straightforward, whereas in the other isotopes it was more challenging. In conclusion, the present work reports results on several new isomers in the neutron-rich nuclei in the lead region. The technical difficulties of the experiment and the devices exploited to overcome them are also highlighted. The physical cases studied appear very interesting, as they point out previously neglected aspects of the nuclear structure. The future investigations that will be possible with the new accelerators and detection setups under construction will shed more light on these issues
La presente tesi di dottorato descrive la preparazione ed i risultati di un esperimento svoltosi presso il laboratorio del GSI, Darmstadt, Germania nel settembre 2009. Nella parte introduttiva si descrivono brevemente le principali linee della moderna ricerca sulla struttura nucleare. Particolare risalto viene dato alla tematica dello studio dei nuclei esotici, cioè lontani dalla valle di stabilità. Essi costituiscono uno dei più importanti obbiettivi di ricerca della fisica nucleare, poiché il loro studio metterà in evidenza aspetti dell'interazione nucleare altrimenti difficili da comprendere. Inoltre, ci si aspettano significativi cambiamenti della struttura del nucleo, come la scomparsa degli usuali numeri magici e l'apparizione di nuovi. Lo studio dei nuclei ricchi di neutroni è anche fondamentale per comprendere quantitativamente la nucleosintesi degli elementi pesanti nel processo rapido, che si pensa accada nelle supernovae. Lo studio dei nuclei esotici presenta tuttavia numerose difficoltà, legate sia alla loro produzione che alla loro misura. La regione dei nuclei di piombo ricchi di neutroni si è infatti rivelata particolarmente complicata da studiare poiché questi isotopi non possono essere popolati con reazioni di fusione-evaporazione o di trasferimento di nucleoni usando fasci stabili. Quindi devono essere sfruttati altri meccanismi di produzione, come le reazioni di frammentazione. Questo metodo ha però degli svantaggi, come le basse sezioni d'urto di produzione e la necessità di disporre di fasci di uranio ad alta energia (1 GeV A) al fine di agevolare la separazione in massa e in numero atomico. Conseguenza di ciò è il fatto che gli isotopi ricchi di neutroni nella zona del nucleo doppio magico 208Pb, siano stati assai meno studiati rispetto a regioni di massa inferiore, come per esempio quelle attorno ai nuclei doppio magici 132Sn e 78Ni. Pur tuttavia questi isotopi sono estremamente interessanti. Da un lato essi sono fondamentali per valutare l'evoluzione della struttura a shell nucleare allontanandosi dal 208Pb, cercando di capire se le chiusure di shell Z = 82 e N = 126 permangano tali. D'altra parte la misura della vita media per decadimento beta di questi nuclei è di vitale importanza per parametrizzare meglio i modelli dai quali poi si devono estrapolare le vite medie degli isotopi direttamente coinvolti nel processo rapido di nucleosintesi stellare. I nuclei esotici vicini al piombo sono stati prodotti mediante frammentazione di un fascio di uranio relativistico ad una energia di 1 GeV A. L'energia e la corrente di fascio disponibili, circa 10^9 particelle per secondo, hanno permesso di affrontare i problemi appena menzionati riguardanti la separazione in massa e di avere una produzione sufficiente dei nuclei di interesse, nonostante le basse sezioni d'urto. I prodotti di reazione sono stati separati con lo spettrometro di massa FRS, che permette di selezionare i canali di interesse e identificare gli ioni prodotti in massa e in numero atomico, evento per evento. I frammenti così identificati sono quindi stati rallentati in un degrader e poi impiantati in un rivelatore a strip di silicio, che permette di misurare tempo e posizione dell'impianto. Questo rivelatore permette inoltre di studiare il decadimento beta degli isotopi in esso fermati, misurando gli elettroni prodotti. Questo rivelatore è circondato da un apparato ad alta efficienza per la misura di fotoni , RISING, composto da 105 cristalli di germanio. Il compito di RISING è quello di misurare energia e tempo dei raggi gamma emessi nel decadimento degli isomeri o nel decadimento beta degli ioni impiantati. Utilizzando gli apparati descritti, si sono studiati gli isomeri negli isotopi pari-pari del piombo 212;214;216Pb. Il loro spettro di eccitazione, studiato per la prima volta, segue molto bene lo schema di seniorità previsto in questi casi. La misura delle vite medie degli isomeri ha inoltre permesso di ricavare gli elementi di matrice di transizione elettromagnetica. Essi rappresentano una sonda molto accurata della funzione d'onda nucleare e quindi la loro comparazione con le stime teoriche consente di stabilire se i modelli nucleari impiegati sono veramente in grado di riprodurre la struttura del nucleo. Le discrepanze che si sono osservate rispetto calcoli di modello a shell (effettuati con hamiltoniani realistici e i più moderni codici di calcolo), richiederebbero l'introduzione di cariche efficaci dipendenti dallo stato per essere risolte. Si è dimostrato che questo è dovuto al fatto che le forze efficaci a tre corpi sono state trascurate. Queste forze, che compaiono ogniqualvolta un hamiltoniano è adattato ad uno spazio di valenza, sono quasi sempre ignorate perché si ritiene producano effetti molto piccoli. In questa tesi si dimostra invece che questa approssimazione può portare a importanti variazioni nei risultati finali dei calcoli. Sono stati osservati isomeri anche negli isotopi 217Bi, 213Pb, 211;213Tl e 208;210Hg. Attribuire spin e parità ai livelli nel 217Bi e nel 208Hg si è rivelato semplice, mentre neglialtri nuclei è stato più difficile. In conclusione, la tesi riporta risultati su diversi nuovi isomeri nei nuclei ricchi di neutroni vicino al piombo. Si sono anche messe in luce le difficoltà tecniche legate all'esperimento e gli accorgimenti adottati per risolverle. I casi fisici trovati appaiono molto interessanti, poiché mettono in evidenza aspetti prima ignorati della struttura nucleare. Le future indagini che saranno possibili con gli acceleratori e gli apparati oggi in costruzione forniranno molte più informazioni su queste tematiche

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39

Iser, Markus [Verfasser], e C. [Akademischer Betreuer] Sinz. "Recognition and Exploitation of Gate Structure in SAT Solving / Markus Iser ; Betreuer: C. Sinz". Karlsruhe : KIT-Bibliothek, 2020. http://d-nb.info/1209199122/34.

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40

Lorenzen-Peth, Jennifer. "Erzählperspektive und Selbstreflexion in Thomas Manns Erzählungen Sinnkonstitution und Sinndestruktion". Kiel Ludwig, 2007. http://d-nb.info/987353470/04.

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41

Swiderski-Ritchie, Martha. "The contents of criticism : Ingardenian theory in the context of literary analysis /". [S.l.] : [s.n.], 1986. http://www.ub.unibe.ch/content/bibliotheken_sammlungen/sondersammlungen/dissen_bestellformular/index_ger.html.

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42

Heine, Nadja [Verfasser]. "Vibrational Spectroscopy of Gaseous Hydrogen-Bonded Clusters: On the Role of Isomer-Specificity and Anharmonicity / Nadja Heine". Berlin : Freie Universität Berlin, 2015. http://d-nb.info/1064869831/34.

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43

Law, Sheryl A. "Factors affecting the occurrence, isomer ratio and enantioselective degradation of hexachlorocyclohexane in arctic and temperate aquatic systems". Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape4/PQDD_0022/MQ50398.pdf.

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44

Kabdulov, Mikhail [Verfasser], e Martin [Akademischer Betreuer] Jansen. "Fluorine-promoted intramolecular aryl-aryl coupling : toward the isomer-specific fullerene synthesis / Mikhail Kabdulov. Betreuer: Martin Jansen". Stuttgart : Universitätsbibliothek der Universität Stuttgart, 2013. http://d-nb.info/1034074148/34.

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45

Nicol, Duncan Patterson. "The synthesis and reactions of an unprecedented isomer of the [16] membered Jager transition metal macrocyclic complex". Thesis, Heriot-Watt University, 1999. http://hdl.handle.net/10399/587.

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46

Razavi, Regina [Verfasser]. "Über die Isomer-spezifische Apoptoseinduktion des Stickstoffmonoxid-Derivates der Acetylsalicylsäure bei der chronischen lymphatischen Leukämie / Regina Razavi". Köln : Deutsche Zentralbibliothek für Medizin, 2010. http://d-nb.info/1008537225/34.

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47

Browne, Frank. "Deformed structures in neutron-rich A ≈ 100 nuclei studied by isomer and ß- delayed γ-ray spectroscopy". Thesis, University of Brighton, 2016. https://research.brighton.ac.uk/en/studentTheses/fc8d1987-8244-4320-8673-a1973c508f95.

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Neutron-rich A∼110 nuclei have been the subject of intensive discussion since the discovery of a rapid onset of ground-state static quadrupole deformation in the A > 100 Zr nuclei over 60 years ago. The results presented in this thesis further the experimental knowledge of such deformations towards more exotic isotopes in this region. An experiment was carried out at the Radioactive Isotope Beam Factory, RIKEN, Wako-shi, Japan. Nuclei of interest were produced through the in-flight abrasion fission of a 345 MeV/nucleon 238U beam by a 555 mg/cm2 9Be target and selected by the BigRIPS spectrometer according to their mass-to-charge ratio and atomic charge. They were implanted into the WAS3ABi silicon stack and γ rays emitted following β-decay, or decay of isomeric states were detected in an array of 12 cluster HPGe (EURICA) and 18 LaBr3(Ce) detectors. A newly implemented fast β-γ timing configuration provided access to the lifetimes of excited states in the nanosecond regime. In particular, the lifetime of the 2+ state of 106Zr is reported for the first time, as well as a more precise measurement for 104Zr, compared to the adopted value. These measurements, combined with the energy of the ground-state transition, have been used to deduce the reduced transition probability and from this a model-dependent value for the ground-state deformation. New isomeric states have also been observed in 102Zr, 113Nb and 115Mo. The reduced transition probability of the 2+ + g.s transition in 106Zr shows a marked decrease from that of 104Zr. This reflects the energy systematics, and further confirms the deformed sub-shell closure at N=64. Comparisons of the systematics of the observed reduced transition probabilities to those calculated in the IBM-1 model show poor agreement. However, calculations based on the nuclear-shell model in a deformed basis state, show good agreement with observation, demonstrating the reliability of the employed ground-state wavefunction. The isomeric state in 102Zr is ascribed to a change in the K quantum number, and the isomeric states in 113Nb and 115Mo are proposed to be due to shape stabilisation of excited states.

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48

Li, Chengliang [Verfasser]. "Sorption of a branched nonylphenol isomer and perfluorooctanoic acid on geosorbents and carbon nanotubes / Chengliang Li. Forschungszentrum Jülich". Aachen : Hochschulbibliothek der Rheinisch-Westfälischen Technischen Hochschule Aachen, 2011. http://d-nb.info/101429794X/34.

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49

Rajagopal, Thivisa. "Synthesis of Single Isomer Trisubstituted Olefins from beta-chloro-alpha-iodo-alpha, beta-Unsaturated Esters and Alkynyl Esters". Thesis, University of Ottawa (Canada), 2010. http://hdl.handle.net/10393/28552.

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A convenient method to synthesize regiospecific and stereoselective trisubstituted olefins bearing three substitutents with various functionalities is disclosed. A unique olefin template such as (E)-beta-chloro-alpha-iodo-alpha,beta-unsaturated esters cross-couple with 9-alkyl-9-BBN to produce single isomer trisubstituted olefins using palladium-catalyzed Suzuki-Miyaura cross-coupling reaction. This methodology can be further expanded to introduce various alkyl groups at the beta-position. The mechanism is somewhat unusual as it involves two catalytic cycles with an allenoate intermediate to explain the observed stereochemistry and protonolysis of that intermediate produces the key product, (E)-beta-chloro-alpha,beta-unsaturated ester. The protonolysis is mediated by the presence of H2O in the inorganic base, K3PO4·H2O.* Similarly, another method has been developed to synthesize trisubstituted olefins using the alkynyl ester and 9-alkyl-9-BBN. This process also has a broad scope to introduce various alkyl groups at the beta-position. The mechanism currently proposed involves an oxidation of palladium to form H-[Pd]-OH species. This was confirmed based on the importance of water in the catalytic system and the isotopic experiments also confirmed the olefinic hydrogen at the alpha-position arises from the water itself. Following the formation of H-[Pd]-OH, syn carbopalladation to the alkynyl ester creates the hydroxyl palladium vinyl intermediate. However, this mechanism does not explain the observed stereochemistry. A more detailed study is required regarding this mechanism.* *Please refer to dissertation for diagrams.

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Issmer, Christian [Verfasser], e Ulrich [Akademischer Betreuer] Wagner. "Explaining aggressive and delinquent behaviors of disadvantaged adolescents: The impact of negative metastereotypes / Christian Issmer. Betreuer: Ulrich Wagner". Marburg : Philipps-Universität Marburg, 2013. http://d-nb.info/1032315024/34.

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