Dissertations / Theses on the topic 'Active oxygen in the body'
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Gutowski, Mariusz. "Molecular detection and characterisation of biologically relevant free radicals during surgical ischaemia-reperfusion." Thesis, University of South Wales, 2011. https://pure.southwales.ac.uk/en/studentthesis/molecular-detection-and-charcaterisation-of-biologically-relevant-free-radicals-during-surgical-ischaemiareperfusion(016f6447-5d02-45f7-a543-8b880148dc23).html.
Full textThe I-R has got a major influence on the muscle oxygenation to increased ROS and the return of values towards baseline period in reperfusion stage appears to coincide with increased oxidative stress. Using the state-of-the-art molecular techniques that include Electron Paramagnetic Spectroscopy (EPR) for the direct detection of free radicals and Near Infrared Spectroscopy (NIRS) for the direct detection of muscle oxygenation these studies have attempted to translate the basic mechanisms associated with free radical formation during I-R and have provided unique insight into the basic mechanisms responsible for the oxidative stress with the ultimate objective of developing novel antioxidant interventions that can provide effective prophylaxis.
McConnell, Paul S. "Green tea antioxidants inhibition of oxidation and mutation." Morgantown, W. Va. : [West Virginia University Libraries], 2001. http://etd.wvu.edu/templates/showETD.cfm?recnum=2052.
Full textVan, Reyk David Marc. "Oxidative phenomena in T lymphocyte activation." Thesis, The University of Sydney, 1997. https://hdl.handle.net/2123/27622.
Full textWright, Paul F. A. "Systemic oxidant stress and its effects on hepatotoxicity /." Title page, contents and abstract only, 1988. http://web4.library.adelaide.edu.au/theses/09PH/09phw952.pdf.
Full textRogers, Colin Brian Schwartz Dean D. "Heat stress and ischemia/reperfusion cause oxidative stress via NADPH oxidase in hypothalamic neurons." Auburn, Ala, 2009. http://hdl.handle.net/10415/1683.
Full textKalghatgi, Sameer Ulhas Friedman Gary. "Mechanisms of interaction of non-thermal plasma with living cells /." Philadelphia, Pa. : Drexel University, 2010. http://hdl.handle.net/1860/3208.
Full textThrash, Bessy Suppiramaniam Vishnu Dhanasekaran Muralikrishnan. "Neuroprotection against methamphetamine induced neurotoxicity applications for Parkinson's disease /." Auburn, Ala, 2009. http://hdl.handle.net/10415/1718.
Full textLee, Sansan. "The effects of knocking down ROS detoxification enzymes on the Caenorhabditis elegans mutants clk-1(qm30) and isp-1(qm150) /." Thesis, McGill University, 2006. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=101597.
Full textMohammed, Warda. "Optimizing Sample Dissolution Methods of Low Water Soluble Intermediate Organic Compounds to Support Environmental Risk Assessment during Active Pharmaceutical Ingredient Manufacturing." Thesis, Örebro universitet, Institutionen för naturvetenskap och teknik, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:oru:diva-93416.
Full textKristovich, Robert Lee. "Chemistry and toxicology of respirable airborne particulates." Connect to this title online, 2004. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1100898370.
Full textTitle from first page of PDF file. Document formatted into pages; contains xvii, 260 p.; also includes graphics (some col.). Includes bibliographical references (p. 242-260).
Austin, Mark. "Constructing the active-body : a sociological investigation." Thesis, Oxford Brookes University, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.404518.
Full textGabe, Atsushi. "Understanding of Carbon Active Sites for Oxygen Reduction Reaction." Doctoral thesis, Universidad de Alicante, 2018. http://hdl.handle.net/10045/87127.
Full textHeiwa Nakajima Foundation
Brink-Elfegoun, Thibault. "Limitations of maximal oxygen uptake during whole-body exercise /." Stockholm : Karolinska institutet, 2007. http://diss.kib.ki.se/2007/20071116brin/.
Full textLandauer, Rachel Clare. "Maturation of carotid body chemoreceptor sensitivity to natural stimuli." Thesis, University of Birmingham, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.251135.
Full textQubain, Ala. "Active control of a turbulent bluff body wake." Thesis, Imperial College London, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.506037.
Full textSun, Zhenning. "Studies on fluorescent probes for the specific detection of reactive oxygen species and reactive nitrogen species in living cells." View the Table of Contents & Abstract, 2006. http://sunzi.lib.hku.hk/hkuto/record/B36845395.
Full textLee, Shang Chiun. "Adenosine and Down-Regulation of Myocardial Oxygen Demand." Thesis, University of North Texas, 1991. https://digital.library.unt.edu/ark:/67531/metadc332565/.
Full textJohansson, Kristin. "Oxygen-reducing enzymes in coatings and films for active packaging." Doctoral thesis, Karlstads universitet, Institutionen för ingenjörs- och kemivetenskaper, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-28749.
Full textPaulet, Julia. "MATURATION OF THE CAROTID BODY OXYGEN-SENSOR DURING RAT DEVELOPMENT." Wright State University / OhioLINK, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=wright1337703804.
Full textWhiteman, Jacob T. "Active Flow Control Schemes for Bluff Body Drag Reduction." The Ohio State University, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=osu1452184221.
Full textRentel, Maike Christina. "Signal transduction in response to active oxygen species in Arabidopsis thaliana." Thesis, University of Oxford, 2002. http://ora.ox.ac.uk/objects/uuid:5dc0b7f5-5aa9-4633-a8dd-89ca2dcb3982.
Full textHuynh, Michael Ph D. Massachusetts Institute of Technology. "Design of active, stable, and earth-abundant acidic oxygen evolution catalysts." Thesis, Massachusetts Institute of Technology, 2016. http://hdl.handle.net/1721.1/105023.
Full textCataloged from PDF version of thesis.
Includes bibliographical references.
Solar-driven electrochemical splitting of water to hydrogen and oxygen is crucial for the production of inexpensive, sustainable, and carbon-neutral fuels for future global energy requirements. Of the two half-reactions for water splitting, developing catalysts for the oxygen evolution reaction (OER) is a challenge because orchestrating the coupled transfer of four protons and four electrons is kinetically demanding. Currently, inexpensive and active OER catalysts comprised of earth-abundant elements from cobalt and nickel oxides operate in neutral and alkaline pH. These same systems corrode under acidic conditions, which is a regime important for electrolyzers and photoelectrochemical devices as well as for fundamental mechanistic studies. In this thesis, we iteratively design an active, stable, and earth-abundant acidic oxygen evolution catalyst through multiple generations. The first version focused on an electrodeposited manganese oxide (MnOx) catalyst that is stable in acid but exhibits low OER activity. Kinetic and mechanistic analysis on deposition and oxygen evolution mechanisms show that its stability manifests from strong manganese-oxygen bonds and self-healing. The second generation system improved activity while retaining acid stability by activating MnOx through a voltage cycling protocol. Structural studies show that activation induces a lower bulk manganese oxidation state and turbostratic disorder. This catalyst architecture was redesigned in the third iteration as a mixed metal oxide where functionality is decoupled into separate metals: Co was employed as the catalytic element while Mn served as the structural component. These CoMnOx films demonstrate the facile OER kinetics of Co and the acid corrosion resistance of Mn. However, these films cannot operate at high potentials since Mn dissolves as permanganate. Thus in our final fourth generation catalyst, we replaced the structural component with lead (doped with iron), an optimization discovered by potential-pH analysis. These CoFePbOx films exhibit ~70 mV/decade Tafel slopes and long-term stability at 1 mA/cm² in pH 2.5, operating at only 200 mV higher overpotential than iridium oxide. Overall, we demonstrate the ability to rationally modify and design an active, stable, and earth-abundant oxygen evolution catalyst.
by Michael Huynh.
Ph. D.
Pallares, Luiz Carlos Marques. "Oxygen transport in cardiopulmonary bypass induced acute lung injury." Thesis, Imperial College London, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.307379.
Full textWu, Wan Man. "Reactive oxygen species and murine malaria." Thesis, The University of Sydney, 1992. https://hdl.handle.net/2123/26446.
Full textMahajan, Kamal. "Synthesis and Characterization of New Active Barrier Polymers." University of Toledo / OhioLINK, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1271339021.
Full textDamiano, John. "Active Body Bias for Low-Power Silicon-On-Insulator Design." NCSU, 2006. http://www.lib.ncsu.edu/theses/available/etd-03312006-003214/.
Full textCabitza, Sara. "Active control of the wake from a rectangular-sectioned body." Thesis, Imperial College London, 2014. http://hdl.handle.net/10044/1/23959.
Full textPeng, Tao, and 彭濤. "Rhodol fluorophores and fluorescent probes for the detection and imaging of reactive oxygen species." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2009. http://hub.hku.hk/bib/B41757920.
Full textPeng, Tao. "Rhodol fluorophores and fluorescent probes for the detection and imaging of reactive oxygen species." Click to view the E-thesis via HKUTO, 2009. http://sunzi.lib.hku.hk/hkuto/record/B41757920.
Full textSun, Zhenning, and 孫振宁. "Studies on fluorescent probes for the specific detection of reactive oxygen species and reactive nitrogen species in living cells." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2006. http://hub.hku.hk/bib/B38677490.
Full textChen, Yuan-Han. "The active site chemistry of factor inhibiting HIF-1, coordination, bonding, and reaction." Amherst, Mass. : University of Massachusetts Amherst, 2009. http://scholarworks.umass.edu/dissertations/AAI3372258/.
Full textGibson, Robert H. "The effect of elevated core temperature upon excess post exercise oxygen consumption." Virtual Press, 1995. http://liblink.bsu.edu/uhtbin/catkey/941356.
Full textSchool of Physical Education
Logan, Angela. "Production of reactive oxygen species in mitochondria and mitochondrial DNA damage." Thesis, University of Cambridge, 2011. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.609201.
Full textRicard, Thomas A. "Active and passive microwave radiometry for transcutaneous measurements of temperature and oxygen saturation." [Tampa, Fla] : University of South Florida, 2008. http://purl.fcla.edu/usf/dc/et/SFE0002505.
Full textHarris, Jessica. "BODIPY dyes for singlet oxygen and optical limiting applications." Thesis, Rhodes University, 2018. http://hdl.handle.net/10962/58002.
Full textBlumoff, Sonja. "Oxygen Uptake Kinetics in Severe Intensity Exercise." Thesis, University of North Texas, 2000. https://digital.library.unt.edu/ark:/67531/metadc2539/.
Full textPahlmark, Kerstin. "The role of oxygen free radicals in ischemic brain damage." Lund : Laboratory for Experimental Brain Research and the Dept. of Anesthesiology, Lund University, 1995. http://catalog.hathitrust.org/api/volumes/oclc/39782077.html.
Full textJackson, Adele. "Oxygen sensing, plasticity and catecholaminergic functions in cultured chromaffin cells of rat carotid body and adrenal medulla : modulation by chronic hypoxia and acetylcholine receptors /." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk2/tape16/PQDD_0018/NQ30096.pdf.
Full textPtak, April Louise Hill David. "VO₂ response profile in heavy intensity cycling after heavy intensity arm or leg exercise." [Denton, Tex.] : University of North Texas, 2006. http://digital.library.unt.edu/permalink/meta-dc-5441.
Full textCherpinski, Correa Adriane. "NOVEL ELECTROSPUN POLYHYDROXYALKANOATE BASED HIGH BARRIER AND ACTIVE BIOPAPERS OF INTEREST IN FOOD PACKAGING." Doctoral thesis, Universitat Politècnica de València, 2020. http://hdl.handle.net/10251/123064.
Full text[CAT] La present tesi doctoral va tindre com a objectiu desenvolupar noves capes biodegradables actives obtingudes mitjançant electrospinning, denominades "biopapers" o biopapeles, amb barrera a aigua i a gasos i propietats de segrest d'oxigen per a la seua possible aplicació en recobriments de paper o com a capes intermèdies en envasos alimentaris basats en paper i cartó. En un primer estudi, es van desenvolupar bio-papers de PHB mitjançant electrospinning, utilitzant dos tipus de col·lectors, col·lectors de placa plana i rotatiu, per a avaluar la influència de l'alineament de les fibres. Amb posterioritat es va aplicar un tractament de recuita per davall del punt de fusió del polímer a diferents temperatures, temps i processos de refredament per a obtenir pel·lícules contínues per coalescència de les fibres, la qual cosa al seu torn va conduir a l'adhesió entre capes, i a una millora en les propietats barrera i òptiques. En un segon estudi, es van depositar bio-papers monocapa i multicapa fets de PHB, PVOH i PLA sobre un substrat de paper no estucat, utilitzant els dos col·lectors citats; i el temps de processament per electrospinning es va variar per a produir grossàries diferents. Per a millorar l'adhesió al substrat de paper, i les propietats òptiques i de barrera de les multicapes, els biopapers es van sotmetre a un procés de recuita com es descriu i optimitza en el primer estudi. Respecte a la barrera a l'aigua, el sistema de paper/PVOH/PHB va presentar les millors propietats. En un tercer estudi, es van obtenir dos nano-papers d'alta barrera fets a base de nanofibres de cel·lulosa de dos tipus, nanofibres de cel·lulosa (CNF) i nanofibres de lignocel·lulosa (LCNF) i es van recobrir amb bio-papers de PHA electro-estirats amb barrera a aigua. Com a resultat, el caràcter hidròfob dels nano-papers es va millorar significativament. D'altra banda, aquests també van exhibir un rendiment mecànic més equilibrat. En un quart estudi, es van desenvolupar bio-papers de PHA amb capacitat activa de segrest d'oxigen, per a això es van usar nanopartícules de pal·ladi (PdNP) com a catalitzadors de la resposta activa. La principal dificultat associada amb les nanopartícules és mantenir-les disperses, per la qual cosa en aquest treball avaluem l'ús de surfactants CTAB i TEOS com a substàncies permeses en contacte amb aliments per a ajudar la dispersió i distribució de PdNP dins de les fibres de PHA. Com a resultat, es van preparar nano-compostos electro-estirats amb capacitat de segrest d'oxigen fets de PHB i PdNP, seguits d'un tractament de recuita per a obtenir capes contínues i autoadhesives. La capacitat de segrest d'oxigen dels bio-papers, mesurada a un 100% d'humitat relativa (HR), va mostrar un millor rendiment per al material en forma de fibra que en forma de film. En qualsevol cas, els resultats van indicar una cinètica de absorció relativament baixa. Amb la finalitat de millorar encara més la cinètica de segrest d'oxigen, fins i tot a una humitat intermèdia i en forma de pel·lícula, un cinquè estudi, va desenvolupar bio-papers multicapa fets de PCL i PHA aplicats sobre paper no estucat. Els nano-compostos de PCL/PdNP van mostrar una cinètica de segrest d'oxigen molt major que la del sistema PHA/PdNP anterior. Aquest resultat s'atribueix a la major fracció de volum lliure del PCL que permet que la humitat, l'hidrogen i la permeància d'oxigen desencadenen la reacció d'eliminació catalítica de forma més eficient. Finalment, un sisè estudi, va desenvolupar un nou concepte de capa amb capacitat de segrest d'oxigen i amb alta barrera passiva a gasos i vapors orgànics basat en PdNP, CNC i EVOH. Així, CNC i CNC oxidat com TEMPO (TEMPO oxidat CNC), es van utilitzar per a produir PdNP in situ sobre el nano-reforç, que es van incorporar en la matriu del polímer EVOH. El TEMPO oxidat CNC va demostrar posseir una major absorció d'oxigen degut als grups carboxílics generats.
[EN] The present PhD thesis aimed to develop novel active fiber based biodegradable layers obtained by electrospinning, so-called biopapers, with water and gas barrier and oxygen scavenging properties for their potential use as paper coatings or packaging interlayers in fiber based packaging. In a first study, PHB biopapers were obtained by electrospinning, by means of two types of collectors namely, flat plate and rotation drum collectors, to evaluate the influence of the alignment of fibers. Annealing post-processing below the polymer melting point was carried at different temperatures, isothermal times and cooling processes to obtain transparent and pore free continuous films by fibers coalescence which in turn led to interlayer adhesion, enhanced barrier and optical properties. In a second study, mono and multilayer biopapers comprising PHB, PVOH and PLA were deposited onto a conventional uncoated paper substrate, using the cited two collectors; and the electrospinning processing time was varied to produce different thickneses. To enhance adhesion to the paper substrate, optical and barrier performance of the multilayer, the biopapers were subjected to an annealed process as described and optimized in the first study. Regarding water barrier, the system paper/PVOH/PHB presented the highest barrier performance. In a third study, environmentally friendly materials such as cellulose based nanopapers, i.e. gas barrier layers made of cellulose nanofibrils (CNFs) and lignocellulose nanofibrils (LCNFs), were obtained and coated with the water barrier electrospun PHA biopapers. As a result, the hydrophobic character of the nanopapers was significantly improved by the electrospun biopapers. Moreover, these also exhibited a more balanced mechanical performance. In a fourth study, active oxygen scavenging PHA biopapers were developed, in which palladium nanoparticles (PdNP) were used as catalysts to scavenge oxygen from the headspace. The main difficulty associated with nanoparticles is to keep them dispersed, so in this work we assessed the use of CTAB and TEOS surfactants as food contact permitted substances to help dispersion and distribution of the PdNP within the PHA fibers. As a result, oxygen scavenging nanocomposite biopapers made of electrospun PHB and PdNP were prepared, followed by annealing treatment to obtain homogeneous and continuous active layers. The oxygen scavenging capacity at 100% relative humidity (RH) of the biopapers in fiber form showed better performance than their annealed specimens as expected, but in general this was not considered optimal. In order to improve further the oxygen scavenging capacity, even at a low relative humidity and in film form, a fifth study, developed multilayered biopapers made of PCL and PHA coated on conventional cellulose paper. The PCL/PdNP nanocomposites showed much more enhanced oxygen scavenging performance in comparison with the above PHA/PdNP system. This result is attributed to the higher fractional free volume of the PCL polymer that allows moisture, hydrogen and oxygen permeation to trigger the catalytic scavenging reaction. Finally, a sixth study, developed a solvent casting high gas barrier and active oxygen scavenging layer concept based on PdNP, CNC and EVOH. Thus, CNC and TEMPO oxidized CNC, were used to produce in situ PdNP, which were incorporated into the EVOH polymer matrix. The TEMPO oxidized CNC exhibited higher oxygen absorption due to the generated carboxylic groups.
Spanish Ministry of Economy and Competitiveness (MINECO) project AGL2015-63855-C2-1-R for financial support. A. Cherpinski also would like to thank the Brazilian Council for Scientific and Technological Development (CNPq) of Brasilian Government for her predoctoral grant (205955/2014-2). A. Cherpinski also acknowledges the European Cooperation in Science and Technology (COST) Action FP1405 for funding through a Short Term Scientific Mission (STSM)
Cherpinski Correa, A. (2019). NOVEL ELECTROSPUN POLYHYDROXYALKANOATE BASED HIGH BARRIER AND ACTIVE BIOPAPERS OF INTEREST IN FOOD PACKAGING [Tesis doctoral no publicada]. Universitat Politècnica de València. https://doi.org/10.4995/Thesis/10251/123064
TESIS
Willmert, Nancy R. "Comparing the effects on physical performance when super oxygenated water is consumed vs regular bottled water /." Connect to online version, 2001. http://minds.wisconsin.edu/handle/1793/38637.
Full textJewell, Derryn T. "The importance of active versus passive body movement cues in infant search." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape10/PQDD_0001/MQ45495.pdf.
Full textKleinbach, Christian Georg [Verfasser]. "Simulation of Occupant Kinematics using Active Human Body Models / Christian Georg Kleinbach." Düren : Shaker, 2019. http://d-nb.info/1208599461/34.
Full textKotronia, Antonia. "Investigation of novel, redox-active organic materials for lithium-ion and lithium-oxygen batteries." Thesis, Uppsala universitet, Strukturkemi, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-304751.
Full textSrivastava, Vaibhav. "Active oxygen involvement in developmental processes in Populus : with emphasis on HipI-superoxide dismutase /." Umeå : Swedish University of Agricultural Sciences, 2009. http://epsilon.slu.se/200921.pdf.
Full textSkovereng, Knut. "Oxygen consumption in cycling: The difference between the whole body and the local muscles." Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for bevegelsesvitenskap, 2011. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-13162.
Full textPal, Rituraj. "PDI, reactive oxygen species stress and polyphenolic phytochemicals implications for neurodegenerative diseases /." To access this resource online via ProQuest Dissertations and Theses @ UTEP, 2009. http://0-proquest.umi.com.lib.utep.edu/login?COPT=REJTPTU0YmImSU5UPTAmVkVSPTI=&clientId=2515.
Full textPawar, Anita. "Intermittent Hypoxia and Neonatal Carotid Body Function." Case Western Reserve University School of Graduate Studies / OhioLINK, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=case1237993899.
Full textPalioca, Wayne Bryant. "The effect of body temperature on arteriovenous oxygen difference during rest and activity in the toad, Bufo marinus." PDXScholar, 1987. https://pdxscholar.library.pdx.edu/open_access_etds/3729.
Full textPortune, Kevin Joseph. "Examinations on harmful algal cyst distribution, germination, and reactive oxygen species production within Delaware's Inland Bays, USA." Access to citation, abstract and download form provided by ProQuest Information and Learning Company; downloadable PDF file, 210 p, 2008. http://proquest.umi.com/pqdweb?did=1601513961&sid=6&Fmt=2&clientId=8331&RQT=309&VName=PQD.
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