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Dissertations / Theses on the topic 'Kinetics of Ring'

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Published: 5 June 2025
Last updated: 1 August 2025

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1

Han, Lu. "UNDERSTANDING THE VIBRATIONAL STRUCTURE, RING-OPENING KINETICS OF OXAZINE RING AND HYDROGEN BONDING EFFECTS ON FAST POLYMERIZATION OF 1,3-BENZOXAZINES." Case Western Reserve University School of Graduate Studies / OhioLINK, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=case1523026767260573.

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2

Beltz, Linda Ann. "The kinetics of poly(acrylonitrile) homopolymer and co-polymer cyclization /." Thesis, Connect to this title online; UW restricted, 1992. http://hdl.handle.net/1773/5468.

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3

Mills, Judith Frances. "Kinetics and mechanism of the hydrolysis of benzoxazines and their ring opened derivatives." Thesis, King's College London (University of London), 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.267701.

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4

Pidgeon, I. M. "The kinetics of the gas phase thermal unimolecular reactions of some small ring compounds." Thesis, University of Reading, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.353478.

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5

Schwarz, Andrew Douglas. "Sulfonamide supported catalysts for the ring opening polymerisation of cyclic esters." Thesis, University of Oxford, 2010. http://ora.ox.ac.uk/objects/uuid:74918e6d-524b-404a-a3e7-c1c34987f4f4.

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This Thesis describes the synthesis and characterisation of sulfonamide supported titanium, zirconium and aluminium complexes and their use as ring opening polymerisation catalysts for ε-caprolactone and rac-lactide. Chapter 1 introduces polyester use, development and characterisation in general. Metal catalysed ring opening polymerisation of cyclic esters is considered in a literature review of the field. Titanium, zirconium and aluminium complexes supported by polydentate sulfonamide ligands are also discussed. Chapter 2 describes the synthesis and characterisation of new sulfonamide support
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6

Wang, Yonghui. "The Chemistry of Cyclopropylarene Radical Cations." Diss., Virginia Tech, 1997. http://hdl.handle.net/10919/29818.

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Cyclopropane derivatives are frequently utilized as "probes" for radical cation intermediates in a number of important chemical and biochemical oxidation. The implicit assumption in such studies is that if a radical cation is produced, it will undergo ring opening. Through a detailed examination of follow-up chemistry of electrochemically and chemically generated cyclopropylarene radical cations, we have shown that the assumption made in the use of these substrates as SET probes is not necessarily valid. While cyclopropylbenzene radical cation undergoes rapid m
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7

Phillips, Janice Paige. "Rearrangements of Radical Anions Generated from Cyclopropyl Ketones." Diss., Virginia Tech, 1998. http://hdl.handle.net/10919/40178.

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Cyclopropyl-containing substrates have been frequently utilized as "probes" for the detection of SET pathways in organic and biorganic systems. These reactions are based on the cyclorpropylcarbinyl - homoallyl rearrangement, which is fast and essentially irreversible. The implicit assumption in such studies is that if a "radical" species is produced, it will undergo ring opening. We have found that there are two important factors to consider in the design of SET probes: 1) ring strain, the thermodynamic driving force for the rearrangement, and 2) resonance energy, which may
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8

Contreras, Moreno Viviana. "Captage et valorisation du CO2 par voie chimique : application à la synthèse de carbonates cycliques à partir d’époxydes." Thesis, Rouen, INSA, 2016. http://www.theses.fr/2016ISAM0021/document.

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L'utilisation du CO2 comme matière première pour la synthèse de produits à haute valeur ajoutée, comme les carbonates cycliques, est aujourd'hui l'une des alternatives proposées dans la réduction des émissions gazeuses à effet de serre. Ce travail de thèse vise à comprendre et concevoir un procédé de valorisation de CO2 à partir de la modélisation de la thermodynamique et des cinétiques de transfert de matière et de réactions, qui sont engendrées dans la synthèse de carbonates cycliques à partir des époxydes et un composé hétérocyclique comme catalyseur. Grâce à ce nouveau système, les carbona
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9

Nallapaneni, Asritha. "BIOMIMETIC NON-IRIDESCENT STRUCTURAL COLORATION VIA PHASE-SEPARATION OF COMPATIBILIZED POLYMER BLEND FILMS." University of Akron / OhioLINK, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=akron1590749223865508.

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10

Tubiana, Luca. "Equilibrium and kinetic properties of knotted ring polymers: a computational approach." Doctoral thesis, SISSA, 2012. http://hdl.handle.net/20.500.11767/4796.

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We provide hereafter a summary of the Thesis organization. Chapter 1 contains a short introduction to the mathematical theory of knots. Starting from the mathematical definition of knotting, we introduce the fundamental concepts and knot properties used throughout this Thesis. In chapter 2 we tackle the problem of measuring the degree of localization of a knot. This is in general a very challenging task, involving the assignment of a topological state to open arcs of the ring. To assign a topological state to an open arc, one must first close it into a ring whose topological state can b
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11

Flassig, Robert Johann. "Dusty ringlets in Saturn’s ring system." Master's thesis, Universität Potsdam, 2008. http://opus.kobv.de/ubp/volltexte/2008/2704/.

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Recently, several faint ringlets in the Saturnian ring system were found to maintain a peculiar orientation relative to Sun. The Encke gap ringlets as well as the ringlet in the outer rift of the Cassini division were found to have distinct spatial displacements of several tens of kilometers away from Saturn towards Sun, referred to as heliotropicity (Hedman et al., 2007). This is quite exceptional, since dynamically one would expect eccentric features in the Saturnian rings to precess around Saturn over periods of months. In our study we address this exceptional behavior by investigating the
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12

Cai, Xiaoshuang. "Production of carbonated vegetable oils from a kinetic modeling to a structure-reactivity approach Structure-reactivity : comparison between the carbonation of epoxidized vegetable oils and the corresponding epoxidized fatty acid methyl ester Aminolysis of cyclic-carbonate vegetable oils as a non-isocyanate route for the synthesis of polyurethane: a kinetic and thermal study Influence of ring‐opening reactions on the kinetics of cottonseed oil epoxidation Investigation of the physicochemical properties for vegetable oils and their epoxidized and carbonated derivatives Influence of gas-liquid mass transfer on kinetic modeling : carbonation of epoxidized vegetable oils." Thesis, Normandie, 2019. http://www.theses.fr/2019NORMIR05.

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La valorisation de la biomasse et du dioxyde de carbone est à présent considérée comme une solution aux problèmes environnementaux du réchauffement climatique et l'épuisement des réserves de pétrole. Ainsi, les huiles végétales ont attiré l'attention croissante des milieux universitaires et industriels, comme une source de biomasse potentielle renouvelable qui peut être appliquée à la production de substitut fossile pour un développement durable, due à leurs caractères renouvelables, durables, biodégradables. De plus, cette biomasse est disponible avec une énorme quantité. Durant des décennies
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13

Weiss, Maximilian Ernst Richard [Verfasser]. "A kinetic model for the anionic ring-opening polymerization of glycidol / Maximilian Ernst Richard Weiss." Berlin : Freie Universität Berlin, 2013. http://d-nb.info/1031421602/34.

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14

Dixon, Wendy Jane. "Kinetic studies of the addition of water oxazines and the formation of ring opened products." Thesis, King's College London (University of London), 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.264933.

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15

Alzaid, Ali H. "A kinetic study of decalin selective ring opening reactions over Iridium supported on H-Beta zeolite catalyst." Thesis, University of British Columbia, 2011. http://hdl.handle.net/2429/35589.

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Selective ring opening of naphthenic rings is the optimum process for reducing the cyclo-paraffin and aromatic content of gas oils in order to improve its quality and consequently its value. The aim of this study was to examine the reaction rates of ring opening of a model multi-ring compound, namely decalin, using a bifunctional catalyst. Three catalysts, Pd/H-Y-30, Ir/H-Beta-300 and Ir/H-Beta-25, were tested to examine the activity and yield of ring opened products at the same reaction conditions. The reaction was performed in a continuously-stirred, batch reactor at 350°C and 3 MPa H₂ press
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16

Ryabova, Anna. "Électrocatalyse de la réduction de l'oxygène et du peroxyde d'hydrogène sur les oxydes de manganèse." Thesis, Strasbourg, 2018. http://www.theses.fr/2018STRAF011/document.

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Les oxydes de manganèse présentent un grand intérêt en raison de leur activité catalytique pour l'ORR (la réaction de réduction de l’oxygène) en milieu alcalin et peuvent être utilisés comme matériaux sans métaux nobles pour la cathode dans les piles à combustible. La présente thèse est consacrée à l’étude de l’activité d'oxydes de manganèse pour l’ORR. Il a été montré que Mn2O3 avec structure bixbyite a une meilleure activité catalytique vers l'ORR en milieu alcalin que les autres oxydes de manganèse étudiés. L'activité spécifique de Mn2O3 est seulement 4 fois inférieure à celle de Pt à une s
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17

Matsumoto, Akira. "Studies on Organocatalytic Asymmetric Construction of Chiral Carbinols." Kyoto University, 2019. http://hdl.handle.net/2433/242517.

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18

Sanni, Olujide Samuel. "Calcium carbonate surface/bulk scaling mechanisms and kinetics in a once-through in-situ flow visualization rig." Thesis, University of Leeds, 2016. http://etheses.whiterose.ac.uk/16419/.

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Scale management is usually a complex mixture of prediction, inhibition and sometimes removal strategies. Investigations into scale formation have largely been focused on precipitation in the bulk solution by assuming that surface scaling always results from pre-precipitated crystals in the bulk solution. Recent observations have shown that bulk and surface scaling do not share the same trends with respect to crystal growth kinetics and inhibition as such the relationship between these two scaling processes are being given attention in the literature. Despite much recent attention on scale for
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19

Menshykau, Dzianis. "Computational electrochemistry." Thesis, University of Oxford, 2012. http://ora.ox.ac.uk/objects/uuid:64e553c7-1bd2-429d-a5de-aeb4a29fc067.

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This thesis addresses simulation of electrochemical experiments, with an emphasis on processes of diffusional mass transport to electrode surface. Following system has been studied: • Applying theoretical modeling and experimentation is shown that even significant surface roughness produced by deliberate polishing or scratching is not sufficient to be distinguished in cyclic voltammetry experiments conducted under the usual conditions. In stripping voltammetry experiment the shape of the voltammograms strongly depends on the model of the electron transfer but is not always sensitive to th
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20

Krarti, Mohamed Ali. "Contribution a l'etude de la passivite du fer et de sa rupture sur electrodes a disque et disque-anneau : facteurs electrochimiques et hydrodynamiques." Paris 7, 1988. http://www.theses.fr/1988PA077087.

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Influence du regime hydrodynamique de la solution corrosive sur la surface d'un metal passif (fer) sensible a la corrosion par piqure. Etude a l'aide de techniques d'electrodes tournantes (electrode disque, electrode disque-anneau)
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21

NICOL, PASCAL. "Etude comparee des polymerisations cationiques des cyclosiloxanes par des amorceurs protoniques et non protoniques." Paris 6, 1987. http://www.theses.fr/1987PA066711.

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Polymerisation de l'hexamethylcyclosiloxane amorcee par des complexes d'association entre un acide de lewis et un chlorure d'acide, donnant les memes produits que la polymerisation amorcee par l'acide trifluorosulfonique. Formation dans les 2 cas d'un haut polymere par un mecanisme de propagation en chaine via un nombre constant de macromolecules lineaires. Discussion des mecanismes globaux possibles
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22

Vitart, Xavier. "Contribution a l'extraction liquide-liquide et a la separation de certains elements du groupe viii, notamment du ruthenium, par des systemes synergiques polyimines aromatiques-echangeurs cationiques micellaires." Paris 6, 1987. http://www.theses.fr/1987PA066663.

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Caracterisation et quantification des equilibres chimiques qui regissent un nouveau systeme d'extraction dont l'apport est de pouvoir operer a partir du milieux fortement acides avec des cinetiques d'extraction tres rapides. Des substitutions de coordinats sont prealablement operees en phase aqueuse. L'extraction elle-meme est realisee par des echangeurs cationiques formant des micelles inverses dans les diluants utilises. Cas de l'acide dinonylnaphtalenesulfonique
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23

Dörfler, Katharina. "Bewertung verschiedener Bolzenschussbetäubungsapparate beim Rind hinsichtlich ihrer Effektivität und ihres Einflusses auf den Ausblutungsgrad." Doctoral thesis, Universitätsbibliothek Leipzig, 2015. http://nbn-resolving.de/urn:nbn:de:bsz:15-qucosa-166636.

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24

Jaquith, James B. "Synthesis of Angiotensin-converting Enzyme, ACE, inhibitors using dynamic kinetic resolution, Synthesis of the highly methylated tryptophan residue of hemiasterlin using glycidic ester ring opening reactions ; Synthesis of benz(o)indenes." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape7/PQDD_0019/NQ46525.pdf.

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25

Dörfler, Katharina. "Bewertung verschiedener Bolzenschussbetäubungsapparate beim Rind hinsichtlich ihrer Effektivität und ihres Einflusses auf den Ausblutungsgrad." Doctoral thesis, Max Rubner-Institut, 2014. https://ul.qucosa.de/id/qucosa%3A13286.

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26

Bernadet, Philippe. "Propriétés spectroscopiques de complexes formes entre un hydracide (HCl, HBr, HI)) et l'oxyde d'éthylène (EO) en matrice d'argon et d'azote : analyse du profil de la bande d'absorption HCl des complexes H(D)Cl:EO et H(D)Cl:dimethylether et étude." Paris 6, 1986. http://www.theses.fr/1986PA066355.

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27

Maudoux, Nicolas. "Catalyseurs phénolates et alcoolates de métaux trivalents pour la polymérisation stéréosélective du lactide." Thesis, Rennes 1, 2014. http://www.theses.fr/2014REN1S139/document.

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Le poly(acide lactique) (PLA), un polyester bio-ressourcé et biodégradable, est un candidat majeur pour la substitution des polymères issus de ressources fossiles. Le contrôle méticuleux de sa microstructure permet de modifier ses propriétés physiques. Dans ce contexte, ce manuscrit rapporte le design de complexes originaux de métaux trivalents et leur utilisation pour la polymérisation par ouverture de cycle (ROP) stéréosélective du lactide racémique (rac-LA). Ainsi, (i) les complexes M-Salen chiraux (M = Al, Ga, In, Salen = (1,2-diphényléthane)bis(phénoxyimine)) ont permis de confirmer l’apt
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28

Tébéka, Iris Raquel Maia. "Síntese total da (+)-trans-triquentrina A." Universidade de São Paulo, 2012. http://www.teses.usp.br/teses/disponiveis/46/46136/tde-26042013-113225/.

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Apresenta-se, nesta tese, a síntese total do alcaloide marinho (+)-trans-triquentrina A. Três abordagens foram investigadas como estratégias sintéticas: uma adição conjugada assimétrica, um acoplamento arílico com um complexo de ferro e uma resolução cinética enzimática. Esta última permitiu finalizar a síntese do produto natural em 20 etapas e com 0,6% de rendimento global. A síntese tem como etapas-chave a resolução cinética de um éster racêmico, mediada pela lipase da Pseudomonas cepacia - que forneceu o (S)-ácido correspondente em excelente excesso enantiomérico - e a contração de anel de
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Poux, Tiphaine. "Study of the oxygen reduction on perovskite-type oxides in alkaline media." Thesis, Strasbourg, 2014. http://www.theses.fr/2014STRAF001/document.

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La cinétique lente de la réduction de l’oxygène (ORR) est en grande partie responsable de la perte d’énergie de nombreux systèmes de conversion tels que les piles à combustible. Parmi les possibles catalyseurs de l’ORR, les oxydes de type pérovskite sont des candidats prometteurs en milieu alcalin. La présente thèse est consacrée à l’étude de l’activité, du mécanisme et de la stabilité de pérovskites à base de Co et Mn pour l’ORR. Grâce aux techniques d’électrode tournante à disque et disque-anneau (R(R)DE), les études de l’ORR et des transformations d’HO2- sur les couches minces de pérovskite
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30

LAKKIS, ZAHREDDINE ZEINAB. "Aspects thermodynamiques et cinetiques de l'extraction de metaux divalents par des acyl-4-pyrazolones-5." Strasbourg 1, 1986. http://www.theses.fr/1986STR13001.

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Extraction de cd et zn a partir des milieux aqueux, perchlorate, nitrate et sulfate par des melanges de phenyl-1 methyl-3 benzoyl-4 pyrazolone-5 et de sels d'ammonium lipophiles. Le pyrazolonate de nh::(4) est l'agent reel de synergie. Mecanisme de transport de cuivre par des acyl-4 pyrazolones-5 a travers une membrane liquide epaisse
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31

Béteille, Jean-Pierre. "Thermolyse eclair d'allyl-1 silacyclopentenes-3 : etude mecanistique et application a la synthese d'hydrogenosiloles et de leurs derives fonctionnels." Toulouse 3, 1988. http://www.theses.fr/1988TOU30156.

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La pyrolyse eclair d'allyl-1 silolenes-3 est effectuee. Elle permet d'obtenir des hydrogenosiloles ainsi que des siloles fonctionnels a liaison silicium-azote, -oxygene ou -fluor et des siloles a groupement aryle ou allyle lie au silicium. De la meme facon on etudie la pyrolyse d'allylgermolenes. Les mecanismes de reaction sont etudies
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32

Clément, Benoît. "Synthèse de copolymères à blocs amphiphiles comme précurseurs de guides tubulaires pour la réparation nerveuse périphérique." Aix-Marseille 1, 2010. http://www.theses.fr/2010AIX1A081.

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Ce travail a pour objectif de concevoir et d'évaluer un guide de repousse nerveux biorésorbable afin de développer une stratégie de réparation du système nerveux périphérique alternative à l'autogrelfe nerveuse, le Gold Standard clinique actuel. Ce tuteur de repousse nerveux a été conçu à partir d'un copolymère séquencé de type poly(D,L-lactide-b-hydroxyéthyle acrylate) (PLA-b-PHEA). La synthèse de ce copolymère diblocs PI. A-h-PHEA combine la polymérisation par ouverture de cycle (ROI') du D,L-I actide et la polymérisation radicalaire contrôlée par les nitroxydes (Nitroxyde-Mediated Polymeriz
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33

Su, Yi-Fang, and 蘇一芳. "Catalyst Kinetics and Product Analysis of Anionic Ring-Opening Polymerization." Thesis, 1999. http://ndltd.ncl.edu.tw/handle/39117387601310864840.

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碩士<br>國立中興大學<br>化學工程學系<br>87<br>The use of various initiators reacted with oxirane to proceed ring-opening polymerization and synthesize polymers containing polyether segments which ran in autoclave. The initiators included amide, amine/amide, urethane, urea and alcohol. Oxirane included propylene oxide (PO) and 1,2-butylene oxide (BO). Those polymers which have been successfully synthesized were classfied to five groups. (1) Amide type: The structure of amide type contained diamide and triamide. Diamide was synthesized by diamine and ethyl acetate. Triamide was synthesiz
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34

Claverie, Jérôme. "Ring-Opening Metathesis Polymerization with Tungsten Based Catalysts: Kinetics, Thermodynamics and Mechanism." Thesis, 1996. https://thesis.library.caltech.edu/11896/1/claverie-jp-1996.pdf.

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<p>Ring-opening metathesis polymerization (ROMP) is instrumental in the synthesis of a variety of polymers. Since the appearance of well defined metathesis catalysts, the synthesis and characterization of ROMP polymers has been greatly improved.</p> <p>In the first chapter, the kinetics and the thermodynamics of such polymerizations are presented. When a living ROMP polymerization is effected in the presence of a chain transfer-agent, the molecular weight distribution is governed by the kinetics of the polymerization. The molecular weight distribution has been evaluated numerically, and the
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Shen, Linhan. "Cavity Ring-Down and Multi-Pass Spectroscopies for Methane Source Attribution and Chemical Kinetics Studies." Thesis, 2018. https://thesis.library.caltech.edu/10804/15/Caltech_Thesis_Shen_Linhan_2017_v2.pdf.

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<p>Methane is the most abundant hydrocarbon in the Earth atmosphere, is also an important greenhouse gas, energy source, and microbial metabolic energy source and product. With the rapid increase of atmospheric methane concentration, it has become very important to quantify methane emissions from different sources. This thesis describes the applications of cavity ring-down applications on atmospheric ethane measurements and measurements of doubly substituted methane for methane source attributions. We also present our work on chemical kinetics studies of an alkene ozonolysis intermediate, C
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Khan, Abdulaziz M. "Kinetic Studies of Oxidative Coupling of Methane Reaction on Model Catalysts." Thesis, 2016. http://hdl.handle.net/10754/609454.

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With the increasing production of natural gas as a result of the advancement in the technology, methane conversion to more valuable products has become a must. One of the most attractive processes which allow the utilization of the world’s most abundant hydrocarbon is the oxidative coupling. The main advantage of this process is the ability of converting methane into higher paraffins and olefins (primarily C2) in a direct way using a single reactor. Nevertheless, low C2+ yields have prevented the process to be commercialized despite the fact that great number of attempts to prepare catalysts w
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Bescherer-Nachtmann, Klaus. "Fibre-Loop Ring-Down Spectroscopy Using Liquid Core Waveguides." Thesis, 2013. http://hdl.handle.net/1974/7906.

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Cavity ring-down spectroscopy has been used over the last twenty years as a highly sensitive absorption spectroscopic technique to measure light attenuation in gases, liquids, and solid samples. An optical cavity is used as a multi-pass cell, and the decay time of the light intensity in the cavity is measured, thereby rendering the techniques insensitive to light intensity fluctuations. Optical waveguides are used to build the optical cavities presented in this work. The geometries of such waveguides permit the use of very small liquid sample volumes while retaining the advantages of cavity ri
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Bains, Jasleen. "Structural and functional characterization of a hybrid benzoate degradation pathway." Thesis, 2011. http://hdl.handle.net/1828/3640.

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Aromatic compounds comprise approximately one quarter of the Earth's biomass and thus play a critical role in the biogeochemical carbon cycle. These compounds are degraded almost exclusively by specialized microbial enzymes that are part of complex metabolic pathways. Detailed characterization of these enzymes is both a gateway to understanding a biological process fundamental to nature and a platform for bioengineering applications in bioremediation. Recently, a novel pathway was shown to metabolize two key aromatic intermediates: Benzoate and Benzoyl-Coenzyme A. Designated as the box pathway
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"On the relevance of adhesion : applications to Saturn's rings." Phd thesis, Universität Potsdam, 2006. http://opus.kobv.de/ubp/volltexte/2006/1084/.

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Since their discovery in 1610 by Galileo Galilei, Saturn's rings continue to fascinate both experts and amateurs. Countless numbers of icy grains in almost Keplerian orbits reveal a wealth of structures such as ringlets, voids and gaps, wakes and waves, and many more. Grains are found to increase in size with increasing radial distance to Saturn. Recently discovered "propeller" structures in the Cassini spacecraft data, provide evidence for the existence of embedded moonlets. In the wake of these findings, the discussion resumes about origin and evolution of planetary rings, and growth process
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邱樹國. "Use Rotation Ring Disk To Study The Kinetic Behavior Of Nickel-Iron Alloy." Thesis, 2001. http://ndltd.ncl.edu.tw/handle/96583358672439239922.

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碩士<br>元智大學<br>化學工程研究所<br>89<br>We develop a fast analytical method for nickel-iron electrodeposition system. Due to the double working electrode nature characteristics of RRDE which can individually control ring and disk potential, we can evaluate the alloy composition and the stability of the plating bath. The content of the study includes : (i) Measurement of the Ni-Fe alloy partial current densities by stripping the deposited alloy on the disk. Part of the stripping charges are collected by the ring by oxidizing Fe(II) to Fe(III). With the concept of collection efficiency, one can calculate
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"Kinetic studies of [3+2] cycloaddition of Fischer carbene complexes with nitrones." Chinese University of Hong Kong, 1994. http://library.cuhk.edu.hk/record=b5887287.

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by Ming Lok Yeung.<br>Thesis (M.Phil.)--Chinese University of Hong Kong, 1994.<br>Includes bibliographical references (leaves 54-56).<br>ACKNOWLEDGMENT --- p.i<br>ABBREVIATION --- p.ii<br>ABSTRACT --- p.iii<br>CONTENTS --- p.iv<br>Chapter I. --- INTRODUCTION --- p.1<br>Chapter II. --- RESULTS AND DISCUSSION --- p.8<br>Chapter II-1 --- [3+2] CYCLOADDITION OF FISCHER CARBENE COMPLEXES WITH NITRONES --- p.8<br>Chapter II-2 --- KINETIC STUDIES OF THE [3+2] CYCLO ADDITION --- p.18<br>Chapter III. --- CONCLUSION --- p.35<br>Chapter IV. --- EXPERIMENTAL --- p.36<br>Chapter V. --- APPENDIX -
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Li, Gang. "Transition-Metal Complexes Catalyzed Hydrogen Atom Transfer: Kinetic Study and Applications to Radical Cyclizations." Thesis, 2015. https://doi.org/10.7916/D88S4P7C.

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Radical cyclizations have been proven to be extremely important in organic synthesis. However, their reliance on toxic trialkyltin hydrides has precluded their practical applications in pharmaceutical manufacturing. Many tin hydride substitutes have been suggested but none of them are adequate alternates to the traditional tin reagent. Transition-metal hydrides have been shown to catalyze the hydrogenation and hydroformylation of unsaturated carbon-carbon bonds. Theses reactions begin with a Hydrogen Atom Transfer (HAT) from a metal to an olefin, generating a carbon-centered radical. The
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43

Lin, Wen-Hsin, and 林文信. "Computational studies of kinetic-ring stacking model for the growth of small fullerene cages C2n (n=12 ~ 18)." Thesis, 2004. http://ndltd.ncl.edu.tw/handle/04856190676731226022.

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博士<br>國立中正大學<br>化學研究所<br>93<br>In this study, a combined quantum mechanical/graph theoretic method has been used to examine the ring-stacking mechanism for the growth of small fullerene cages C2n (n=12-18). It is observed that the reactions between the precursors and the belts in most cases are endothermic, and the reactions between the stable intermediates (bowls) and final belts are exothermic which is akin to the fullerene annealing process. According to the deformation analysis, the monocyclic precursor is found to have lower deformation energies than the polycyclic precursors. The first s
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44

Lartiga, Catalina. "Development of a rig and testing procedures for the experimental investigation of horizontal axis kinetic turbines." Thesis, 2012. http://hdl.handle.net/1828/3955.

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The research detailed in this thesis was focused on developing an experimental testing system to characterize the non-dimensional performance coefficients of horizontal axis kinetic turbines, including both wind turbines and tidal turbines. The testing rig was designed for use in a water tunnel with Particle Image Velocimetry (PIV) wake survey equipment to quantify the wake structures. Precision rotor torque measurement and speed control was included, along with the ability to yaw the rotor. The scale of the rotors were purposefully small, to enable rapid-prototyping techniques to be used to p
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Zheng, Tao. "Stereoselective construction of cyclic ether rings via cyclic orthoesters and kinetic resolution of racemic alkenes by asymmetric dihydroxylation using peptide-based ligands." Diss., 2006.

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46

Verma, Ankit. "ALTERNATE POWER AND ENERGY STORAGE/REUSE FOR DRILLING RIGS: REDUCED COST AND LOWER EMISSIONS PROVIDE LOWER FOOTPRINT FOR DRILLING OPERATIONS." 2009. http://hdl.handle.net/1969.1/ETD-TAMU-2009-05-587.

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Diesel engines operating the rig pose the problems of low efficiency and large amount of emissions. In addition the rig power requirements vary a lot with time and ongoing operation. Therefore it is in the best interest of operators to research on alternate drilling energy sources which can make entire drilling process economic and environmentally friendly. One of the major ways to reduce the footprint of drilling operations is to provide more efficient power sources for drilling operations. There are various sources of alternate energy storage/reuse. A quantitative comparison of physical size
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Biswas, Rajib. "Dynamics of Water under Confinement and Studies of Structural Transformation in Complex Systems." Thesis, 2013. http://etd.iisc.ac.in/handle/2005/3405.

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The thesis involves computer simulation and theoretical studies of dynamics of water under confinement and structural transformation in different complex systems. Based on the systems and phenomena of interest, the work has been classified in to three major parts: I. Dynamics of water under confinement II. Dynamics of water in presence of amphiphilic solutes III. Structural transformation in complex systems The three parts have further been divided into nine chapters. Brief chapter wise outline of the thesis is discussed below. Part I deals with the dynamics of water in confined systems. In
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Biswas, Rajib. "Dynamics of Water under Confinement and Studies of Structural Transformation in Complex Systems." Thesis, 2013. http://etd.iisc.ernet.in/2005/3405.

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The thesis involves computer simulation and theoretical studies of dynamics of water under confinement and structural transformation in different complex systems. Based on the systems and phenomena of interest, the work has been classified in to three major parts: I. Dynamics of water under confinement II. Dynamics of water in presence of amphiphilic solutes III. Structural transformation in complex systems The three parts have further been divided into nine chapters. Brief chapter wise outline of the thesis is discussed below. Part I deals with the dynamics of water in confined systems. In
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