Tesis sobre el tema "Ethers"
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Huang, Zilin. "Synthesis and Complexation Studies of Novel Functionalized Crown Ethers and Azacrown Ethers". Thesis, University of North Texas, 2006. https://digital.library.unt.edu/ark:/67531/metadc5593/.
Texto completoWelsh, Gwendolyn L. "Polybrominated diphenyl ethers". Cincinnati, Ohio : University of Cincinnati, 2008. http://rave.ohiolink.edu/etdc/view.cgi?acc_num=ucin1216928488.
Texto completoAdvisors: Jodi Shann PhD (Committee Chair), Brian Kinkle PhD (Committee Member), Anne Vonderheide PhD (Committee Member), Stacy Pfaller PhD (Committee Member) Title from electronic thesis title page (viewed Oct. 5, 2008). Includes abstract. Keywords: Brominated Flame Retardants; PBDE; GC-MS; Soil Sorption; Bioavailability; GC-ECD; Microbial Degradation Includes bibliographical references.
Lousenberg, Robert Daniel. "Synthesis of trifluorovinyl ethers". Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp04/mq29227.pdf.
Texto completoRico, Joseph G. "Directed lithiations of enol ethers : stereoselective synthesis and reactions of substituted enol ethers". Diss., Georgia Institute of Technology, 1987. http://hdl.handle.net/1853/27166.
Texto completoYassin-Hussan, Saad. "Photolyse des ethers aromatiques halogenes : bromo phenetole, paradibromo phenetole, parabromo phenetole, parabromodiphenyl ether". Toulon, 1990. http://www.theses.fr/1990TOUL0004.
Texto completoStarkey, Darren Paul. "The tropospheric oxidation of ethers". Thesis, University of Hull, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.322331.
Texto completoJones, D. "The synthesis of aryl ethers". Thesis, Swansea University, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.637726.
Texto completoVile, Sadie. "Alpha-sulphonyl ethers in synthesis". Thesis, Imperial College London, 1990. http://hdl.handle.net/10044/1/46595.
Texto completoWild, Carl. "Trifluoroethyl enol ethers, dienol ethers, and acetals: an investigation of their preparations, reactivities, and synthetic applications". Diss., Virginia Polytechnic Institute and State University, 1988. http://hdl.handle.net/10919/54459.
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Landry, Denis Joseph Carleton University Dissertation Chemistry. "Approaches to the synthesis and sterochemical analysis of aza crown ethers". Ottawa, 1989.
Buscar texto completoHuang, Zilin. "Synthesis and Properties of Novel Cage-Annulated Crown Ethers". Thesis, University of North Texas, 2003. https://digital.library.unt.edu/ark:/67531/metadc5523/.
Texto completoKleissler, Charles Richard. "Comparison of poly(vinyl alcohol) backbone-grafted ethers and chain-growth crown ether polymers in selective cation adsorption". Diss., Georgia Institute of Technology, 1987. http://hdl.handle.net/1853/10115.
Texto completoLightfoot, Andrew Philip. "Chiral oxime ethers : applications in synthesis". Thesis, Loughborough University, 1996. https://dspace.lboro.ac.uk/2134/28182.
Texto completoFowler, Tom. "Claisen rearrangments of bicyclic enol ethers". Thesis, University of Oxford, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.414088.
Texto completoTelford, Peter T. "New routes to highly fluorinated ethers". Thesis, Durham University, 1986. http://etheses.dur.ac.uk/6835/.
Texto completoOwens, K. A. "Polycyclic crown ethers incorporating cyclophane units". Thesis, University of Liverpool, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.370864.
Texto completoLaurent, Pierre. "Asymmetric synthesis using chiral oxime ethers". Thesis, University of Exeter, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.248161.
Texto completoHunt, James Charles Atlee. "Chiral oxime ethers in asymmetric synthesis". Thesis, University of Exeter, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.302639.
Texto completoWilson, Mark James. "Activity relationships for aromatic crown ethers". Thesis, University of Strathclyde, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.249872.
Texto completoDawkins, David Anthony. "Asymmetric synthesis using chiral vinyl ethers". Thesis, University of Leicester, 1992. http://hdl.handle.net/2381/33644.
Texto completoAwad, Amneh. "Palladium Catalyzed Reactions of Enol Ethers". The Ohio State University, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=osu1398070523.
Texto completoSnelling, Jeff Barnett Mark O. "Higher ethers as replacement oxygenates for methyl tertiary butyl ether in gasoline synthetic and environmental aspects /". Auburn, Ala., 2007. http://repo.lib.auburn.edu/2006%20Fall/Dissertations/SNELLING_JEFF_42.pdf.
Texto completoBodvik, Rasmus. "Bulk and interfacial properties of cellulose ethers". Doctoral thesis, KTH, Yt- och korrosionsvetenskap, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-95379.
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Gorgy, Tamer George Alexan. "Polybrominated diphenyl ethers in biosolids-amended soils". Thesis, University of British Columbia, 2011. http://hdl.handle.net/2429/35020.
Texto completoFruteau, de Laclos Anne-Marie F. (Anne-Marie François). "Cleavage of benzyl aryl ethers by chlorine". Thesis, McGill University, 1991. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=70291.
Texto completoCatalytic amounts of Cl$ sb2$ cleaved benzyl aryl ether bonds (OR=2-methoxy-4-methylphenoxy) before any ring chlorination occurred. Yields of cleavage decreased in the order: R$ sp prime$=H; R$ sp prime$=$-$CH$ sb2$-2-methoxyphenoxy; R$ sp prime$=$-$CH(CH$ sb2$OH)-2-methoxyphenoxy. These results support the concept that the delignification of wood pulp by chlorine results from benzyl aryl ether cleavage. The conditions of the reaction, as well as control reactions with hydrochloric acid, suggest that the cleavage is due to conventional acid hydrolysis induced by chlorine. The experimental evidence does not rule out another possible mechanism in which the cleavage is initiated by molecular chlorine.
Benzyl ether links were generally stable in models of the benzyl alkyl type, whose primary reactions were ring chlorination. A large excess of chlorine caused side-chain displacement, hitherto considered the primary reaction in the solubilization of lignin.
Scullion, Lisa. "Single molecular conductance of ethers and peptides". Thesis, University of Liverpool, 2010. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.539474.
Texto completoWadman, S. N. "Stereoselective alkene syntheses from cyclic enol ethers". Thesis, University of Southampton, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.233924.
Texto completoEngel, García Paloma. "Novel coupling reactions for complex polycyclic ethers". Thesis, University of Glasgow, 2013. http://theses.gla.ac.uk/4339/.
Texto completoTaylor, Piers. "Aza-enolate alkylation reactions of lactim ethers". Thesis, University of Bath, 2005. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.425801.
Texto completoDenike, John Kane Carleton University Dissertation Chemistry. "The synthesis and complexation of bis-crown ethers and polymers bearing pendant crown ethers and the study of molecular motion of crown ethers in solids using solid state 2H NMR". Ottawa, 1992.
Buscar texto completoHöglund, Anders. "Controllable degradation product migration from biomedical polyester-ethers". Licentiate thesis, KTH, Fibre and Polymer Technology, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-4366.
Texto completoThe use of degradable biomedical materials has during the past decades indeed modernized medical science, finding applications in e.g. tissue engineering and drug delivery. The key question is to adapt the material with respect to mechanical properties, surface characteristics and degradation profile to suit the specific application. Degradation products are generally considered non-toxic and they are excreted from the human body. However, large amounts of hydroxy acids may induce a pH decrease and a subsequent inflammatory response at the implantation site.
In this study, macromolecular design and a combination of cross-linking and adjusted hydrophilicity are utilized as tools to control and tailor degradation rate and subsequent release of degradation products from biomedical polyester-ethers. A series of different homo- and copolymers of -caprolactone (CL) and 1,5-dioxepan-2-one (DXO) were synthesized and their hydrolytic degradation was monitored in phosphate buffer solution at pH 7.4 and 37 °C for up to 546 days. The various materials comprised linear DXO/CL triblock and multiblock copolymers, PCL linear homopolymer and porous structure, and random cross-linked homo- and copolymers of CL/DXO using 2,2’-bis-(ε-caprolactone-4-yl) propane (BCP) as a cross-linking agent.
The results showed that macromolecular engineering and controlled hydrophilicity of cross-linked networks were useful implements for customizing the release rate of acidic degradation products in order to prevent the formation of local acidic environments and thereby reduce the risk of inflammatory responses in the body.
Merilis, Giorvanni. "Distribution of Polybrominated Diphenyl Ethers Among Demographic Categories". Scholar Commons, 2017. http://scholarcommons.usf.edu/etd/6903.
Texto completoRolland, de Denus Christine Marie. "Controlled molecular design and polymerization of polyaromatic ethers". Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp04/nq23656.pdf.
Texto completoTeclechiel, Daniel. "Synthesis and characterization of highly polybrominated diphenyl ethers". Doctoral thesis, Stockholm : Department of Environmental Chemistry, Stockholm university, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-7410.
Texto completoDanon-Schaffer, Monica N. "Polybrominated diphenyl ethers in landfills from electronic waste". Thesis, University of British Columbia, 2010. http://hdl.handle.net/2429/20740.
Texto completoGallimore, A. R. "The biogenesis of terrestrial and marine polycyclic ethers". Thesis, University of Cambridge, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.599282.
Texto completoBird, P. M. "Stereocontrol in the synthesis of substituted spirocyclic ethers". Thesis, University of Cambridge, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.596658.
Texto completoTrmcic, Jelena. "Electrophilic fluorination of ethers and deactivated benzene derivatives". Thesis, Durham University, 2005. http://etheses.dur.ac.uk/2769/.
Texto completoMerithew, Andrew William. "Differential Self-Assembly of Novel Redox Crown Ethers". Thesis, University of California, Santa Barbara, 2014. http://pqdtopen.proquest.com/#viewpdf?dispub=3645672.
Texto completoRetinal prosthesis relies on the stimulation of living nerve tissue behind the rods and cones of the eye. The current state of the art relies on electrodes controlled by cameras which directly stimulate the nerve tissue to elicit a response to an image. These types of retinal implants have allowed for short-term crude vision in patients but have had limited long term success due to external battery packs and electroplating of the implanted electrodes.
Ionic stimulation is one of the principle mechanisms that sensory neurons utilize in the generation of an action potential. In a complex transduction pathway, ionic gradients are constantly altered inside the neuron by voltage sensors or mechanically controlled gates embedded in the neuronal cell membrane; responsible for the open and close state of these ion channels.
It has been demonstrated that local concentration increases of K + by direct injection proximal to the nerve can elicit nerve firing at a concentration of 15-20 mM (3-4X normal concentration) increase in K + concentration. As part of a larger concept of integrating biotechnology with nanofabrication, the materials for the development of potassium selective sequestration/storage and delivery were developed in the form of a redox-gated K+ selective crown ether.
The structure of the anthraquinone-based crown was deduced by computational simulation and stoichiometry of the complex confirmed by mass spec. along with 2D diffusion NMR techniques. In this instance, the stoichiometry could be controlled by the addition of different salts to give a 1:1 complex with large, aromatic anions and a 2:1 complex with smaller anions such as triflate. The synthesis of the molecule was optimized by computational modeling and simulations of transport through an artificial membrane. The selectivity of the architecture developed was specific for K+ over Na+, the other major ionic species present in the blood. The mechanism influencing the self-assembly of this class of compounds has much to do with the breakage of intramolecular π-stacking interactions and the formation of stronger intermolecular π-stacking interactions.
Finally, the transport of K+ through nanoporous membranes and single nanopores with novel PEG-type polymeric dispersions is demonstrated. This thesis concludes with future work toward developing more advanced transporters and proposes novel uses for anthraquinone-appended polymers as proton exchange membranes and DNA-base pair interchelators.
Fregapane, Giuseppe. "Chemo-enzymatic synthesis of sugar fatty acid ethers". Thesis, University of Reading, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.357150.
Texto completoCooper, Tracey Sara. "Synthesis of amino acids from chiral oxime ethers". Thesis, University of Exeter, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.432786.
Texto completoHeslin, J. C. "Synthesis of cyclic ethers and approaches to zoapatanol". Thesis, Imperial College London, 1988. http://hdl.handle.net/10044/1/47108.
Texto completoWikström, Linus. "Surface treatment of cellulose ethers Ytmodifiering av cellulosaetrar". Thesis, Högskolan i Borås, Institutionen Ingenjörshögskolan, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:hb:diva-17977.
Texto completoProgram: Högskoleingenjörsexamen i Kemiingenjör – tillämpad bioteknik
WELSH, GWENDOLYN L. "Polybrominated Diphenyl Ethers: Soil Sorption and Microbial Degradation". University of Cincinnati / OhioLINK, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1216928488.
Texto completoJi, Mingzhe. "Explorations with optically active, cage-annulated crown ethers". Thesis, University of North Texas, 2003. https://digital.library.unt.edu/ark:/67531/metadc4207/.
Texto completoGouardères, Frédéric P. "The cationic ring-opening polymerization of cyclic ethers". Thesis, Aston University, 1995. http://publications.aston.ac.uk/9681/.
Texto completoPage, Abigail. "Atropisomeric diaryl ethers and other non-biaryl atropisomers". Thesis, University of Manchester, 2011. https://www.research.manchester.ac.uk/portal/en/theses/atropisomeric-diaryl-ethers-and-other-nonbiaryl-atropisomers(84281e1e-416b-4d2e-834b-1d215d6767cf).html.
Texto completoLLORENS, GILBERT. "Contribution a l'etude des ethers d'alcool gras polyoxyethylene". Strasbourg 1, 1993. http://www.theses.fr/1993STR15021.
Texto completoD'Souza, Lawrence Joseph. "Bile Acid Based Molecular Tweezers And Crown Ethers". Thesis, Indian Institute of Science, 1995. https://etd.iisc.ac.in/handle/2005/114.
Texto completoD'Souza, Lawrence Joseph. "Bile Acid Based Molecular Tweezers And Crown Ethers". Thesis, Indian Institute of Science, 1995. http://hdl.handle.net/2005/114.
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