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Tesi sul tema "Active oxygen"

Autore: Grafiati

Pubblicato: 4 giugno 2021

Ultima modifica: 31 luglio 2024

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1

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.

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Oxygen is one of the most important molecules in human beings. Our research is focused on how the human body can respond and adapt to the physiological challenge posed by a lack of oxygen. Ascorbic acid (Vitamin C) is one of the most important and considered the most effective water-soluble, chain-breaking antioxidant in human plasma, with the capacity to prevents damage by free radicals. This thesis presents four studies investigating the phenomenon of Reactive Oxygen Species (ROS) generation in the many different surgical conditions in the animal and in the human. Study one investigated the

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2

Sun, 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.

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3

Gabe, Atsushi. "Understanding of Carbon Active Sites for Oxygen Reduction Reaction." Doctoral thesis, Universidad de Alicante, 2018. http://hdl.handle.net/10045/87127.

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Este trabajo de Tesis Doctoral se ha centrado en comprender el comportamiento de electrocatalizadores basados en materiales carbonosos para la reacción de reducción de oxígeno. Con el fin de profundizar en el conocimiento de la naturaleza de los sitios activos de catalizadores basados en materiales carbonosos para esta reacción, se han seleccionado o preparado muestras con diferentes composiciones, texturas porosas y estructuras. De estos resultados se han conseguido importantes avances en el conocimiento del papel que los sitios activos de catalizadores basados en materiales carbonosos desemp

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4

Johansson, 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.

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Oxygen scavengers are used in active packages to protect the food against deteriorative oxidation processes. The aim of this work was to investigate the possibilities to produce oxygen-scavenging packaging materials based on oxygen-reducing enzymes. The enzymes were incorporated into a dispersion coating formulation applied onto a food-packaging board using conventional laboratory coating techniques. Various enzymes were used: a glucose oxidase, an oxalate oxidase and three laccases originating from different organisms. All of the enzymes were successfully incorporated into a coating layer and

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5

Wu, Wan Man. "Reactive oxygen species and murine malaria." Thesis, The University of Sydney, 1992. https://hdl.handle.net/2123/26446.

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The aim of this study was to investigate the role of ROS in the protective and pathological immune response during malarial infection. For this purpose, four isolates of Plasmodium parasites (P. berghei ANKA, P. vinckei, P. berghei K152 and P. chabaudi) and two different inbred strains of mice (CBA and DBA) were used. The patterns of mortality varied between the different mouseparasite strain combinatio ns. The mortality of CBA mice infected with P. vinckei and P. berghei K152, and DBA mice infected with P. berghei ANKA, related to the levels of parasitaemia. However early mortality of CBA

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6

Sun, 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.

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7

Peng, 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.

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8

Peng, 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.

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9

Mahajan, Kamal. "Synthesis and Characterization of New Active Barrier Polymers." University of Toledo / OhioLINK, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1271339021.

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10

Rentel, 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.

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Abstract (sommario):

Many environmental stresses result in increased generation of active oxygen species (AOS) in plant cells, leading to the induction of protective mechanisms. In this study, signalling components linking AOS perception to downstream responses were examined, with particular emphasis on H<sub>2</sub>O<sub>2</sub> signalling. All AOS investigated had an early [Ca<sup>2+</sup>]<sub>cyt</sub> peak in common, but differed in other aspects of their Ca<sup>2+</sup> signatures, indicating that the plant is able to discriminate between different types of AOS. An early event in AOS signal transduction may

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11

Huynh, 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.

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Thesis: Ph. D., Massachusetts Institute of Technology, Department of Chemistry, 2016.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references.<br>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

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12

Chen, 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/.

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13

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.

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14

Pahlmark, 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.

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15

Cherbonnel, Angéline. "Study of the mechanism of action of metallic active oxygen barriers applied in polymers for food and drinks preservation." Thesis, Strasbourg, 2018. http://www.theses.fr/2018STRAF017.

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Les plastiques sont devenus les matériaux les plus utilisés pour la préservation de denrées alimentaires. Malgré leurs nombreux avantages (transparence, prix, modularité, propriété barrière aux gaz), leur imperméabilité à l’oxygène doit être sans cesse améliorée afin d’éviter aux denrées de subir diverses réactions d’oxydation et ainsi prolonger leurs durées de conservation. Pour cela, une solution envisageable consiste à combiner à des polymères, des catalyseurs métalliques pour piéger l’oxygène. Cette possibilité a été étudiée dans cette thèse. Après un premier chapitre introductif, le deuxi

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16

Harris, Jessica. "BODIPY dyes for singlet oxygen and optical limiting applications." Thesis, Rhodes University, 2018. http://hdl.handle.net/10962/58002.

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A series of structurally related BODIPY dyes were synthesised and characterised. Their photophysical properties were studied in order to determine whether they would be suitable candidates for use as photosensitisers in the photodynamic therapy (PDT) treatment of cancer. The synthesis of two highly fluorescent BODIPY cores was achieved via the acid-catalysed condensation of a pyrrole and a functionalised aldehyde. In order to promote intersystem crossing, and hence improve the singlet oxygen generation of these dyes, bromine atoms were added at the 2,6-positions of the BODIPY core. These dibro

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17

Garcia, Angela. "Kinetic modeling of oxygen absorption by unsaturated esters and linseed oil to be used as oxygen scavengers." Thesis, Paris, ENSAM, 2016. http://www.theses.fr/2016ENAM0001/document.

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Les capteurs d’oxygène sont le plus grand apport dans la technologie des emballages actifs parce qu’ils permettent de retarder la dégradation oxydante des aliments et ainsi éviter la perte de saveurs et le développement microbien au sein des aliments. Bien que le développement des emballages actes existe depuis les années 70 dans des pays producteur agricole, la recherche sur ces emballages reste encore embryonnaire, en particulier sur les critères techniques portant sur l’absorption d’oxygène de films. Cette thèse constitue une contribution sur l’étude des cinétiques d’absorption d’oxygène de

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18

Cherpinski, 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.

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[ES] La presente tesis doctoral tuvo como objetivo desarrollar nuevos materiales biodegradables hechos a base de fibras obtenidas mediante la técnica de electroestirado, denominadas "biopapers" o biopapeles, con barrera a agua y a gases y propiedades de secuestro de oxígeno para su posible aplicación en recubrimientos de papel o como capas intermedias en envases alimentarios basados en papel y cartón. En un primer estudio, se desarrollaron biopapeles de PHB mediante electroestirado, usando dos tipos de colectores, colectores de placa plana y rotativo, para evaluar la influencia del alineamien

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19

Ricard, 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.

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20

Portune, 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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21

Lo, Shih-Ching. "Regulation of Nrf2 by a keap1-dependent E3 ubiquitin ligase." Diss., Columbia, Mo. : University of Missouri-Columbia, 2007. http://hdl.handle.net/10355/4699.

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Thesis (Ph.D.)--University of Missouri-Columbia, 2007.<br>The entire dissertation/thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file (which also appears in the research.pdf); a non-technical general description, or public abstract, appears in the public.pdf file. Title from title screen of research.pdf file (viewed on March 11, 2009) Includes bibliographical references.

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22

Lewis, Tony. "Mechanisms of lung injury caused by residual oil fly ash role of metal-induced reactive oxygen species /." Morgantown, W. Va. : [West Virginia University Libraries], 2001. http://etd.wvu.edu/templates/showETD.cfm?recnum=2210.

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Abstract (sommario):

Thesis (M.S.)--West Virginia University, 2001.<br>Title from document title page. Document formatted into pages; contains vii, 53 p. : ill. (some col.). Includes abstract. Includes bibliographical references (p. 48-53).

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23

Pal, 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.

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24

Kotronia, 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.

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Abstract (sommario):

This thesis encompasses the successful synthesis, characterization (NMR, IR, TGA) and electrochemical testing of novel, potentially redox-active organic materials. These were destined as electrodes for Li-organic cells and/or as catalysts for Li–O2 cells. The electrochemical performance of the dilithiated and tetralithiated salts of 2,5-dialkylamide hydroquinones (with ethyl, isopropyl or benzyl as the alkyl group) and of a partially lithiated polymer with a backbone of alternating 2,5-dicarbonylhydroquinone and 1,4-benzyl diaminophenylene units was evaluated. The small organicsalts exhibited

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25

Srivastava, 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.

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26

Mukhopadhyay, Suman. "Identification and characterization of genes that protect Escherichia coli from hydrogen peroxide mediated oxidative stress." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk2/tape16/PQDD_0018/NQ30161.pdf.

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27

Lee, Chung-yung Jetty, and 李忠英. "The influence of antioxidant vitamin E on immunocompetence and oxidative stress of healthy Hong Kong individuals." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1998. http://hub.hku.hk/bib/B31238828.

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28

Lee, Chung-yung Jetty. "The influence of antioxidant vitamin E on immunocompetence and oxidative stress of healthy Hong Kong individuals /." Hong Kong : University of Hong Kong, 1998. http://sunzi.lib.hku.hk/hkuto/record.jsp?B2066820X.

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29

Seotsanyana-Mokhosi, Itumeleng. "Photosensitizing properties of non-transition metal porphyrazines towards the generation of singlet oxygen." Thesis, Rhodes University, 2001. http://hdl.handle.net/10962/d1006086.

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Metallophthalocyanine complexes containing non-transition metals are very useful as sensitizers for photodynamic therapy, a cure for cancer that is based on visible light activation of tumour localized photo sensitizers. Excited sensitizers generate singlet oxygen as the main hyperactive species that destroy the tumour. Water soluble sensitizers are sought after for the convenience of delivery into the body. Thus, phthalocyanine (pc), tetrapyridinoporphyrazines (tppa) and tetramethyltetrapyridinoporphyrazines (tmtppa) with non-transition central metal atoms of Ge, Si, Sn and Zn were studied. F

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30

Lam, Dennis, and 林勁行. "A study of biological role of reactive oxygen species in cellular response in stress." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2012. http://hub.hku.hk/bib/B47869604.

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When proteins are unable to fold properly in the endoplasmic reticulum (ER), the resultant formation of misfolded proteins causes stress of the ER. Cells with ER stress often have a higher abundance of reactive oxygen species (ROS). Previous studies suggest that ROS could aggravate ER stress by further disrupting the ER protein folding process. More recent studies suggest that the unfolded protein response signaling pathways activated by ER stress could lead to the production of ROS. Such studies lead to the hypothesis that ER stress could be promoted by ROS, and vice versa. The aim of

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31

Han, Jin-Soon Brockman Herman E. "Effects of active oxygen species generated from hydrogen peroxide in Neurospora crassa and Salmonella typhimurium." Normal, Ill. Illinois State University, 1991. http://wwwlib.umi.com/cr/ilstu/fullcit?p9203030.

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Thesis (Ph. D.)--Illinois State University, 1991.<br>Title from title page screen, viewed December 8, 2005. Dissertation Committee: Herman E. Brockman (chair), Radheshym K. Jayaswal, Alan J. Katz, David F. Weber, Brian J. Wilkinson. Includes bibliographical references (leaves 113-125) and abstract. Also available in print.

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32

Xia, Chang. "The role of reactive oxygen species and PI3K/AKT signaling in tumor angiogenesis." Morgantown, W. Va. : [West Virginia University Libraries], 2006. https://eidr.wvu.edu/etd/documentdata.eTD?documentid=4714.

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Thesis (Ph. D.)--West Virginia University, 2006.<br>Title from document title page. Document formatted into pages; contains xi, 261 p. : ill. (some col.). Vita. Includes abstract. Includes bibliographical references.

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33

Azad, Neelam. "Molecular mechanisms of chromium (VI)-induced apoptosis and malignant transformation." Morgantown, W. Va. : [West Virginia University Libraries], 2007. https://eidr.wvu.edu/etd/documentdata.eTD?documentid=5041.

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Thesis (Ph. D.)--West Virginia University, 2007.<br>Title from document title page. Document formatted into pages; contains ix, 103 p. : ill. (some col.). Vita. Includes abstract. Includes bibliographical references.

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34

Guo, Jing. "Studying the signaling pathways in ROS-induced neuronal cell death /." View abstract or full-text, 2005. http://library.ust.hk/cgi/db/thesis.pl?BIOL%202005%20GUO.

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35

Trumbull, Kari Adele. "Development of an oxidatively-releasable caged biosensor system and application to the release of antioxidants and fluorescent probes /." view abstract or download file of text, 2007. http://proquest.umi.com/pqdweb?did=1324377721&sid=1&Fmt=2&clientId=11238&RQT=309&VName=PQD.

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Thesis (Ph. D.)--University of Oregon, 2007.<br>Typescript. Includes vita and abstract. Includes bibliographical references (leaves 137-158). Also available for download via the World Wide Web; free to University of Oregon users.

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36

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.

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37

Van, Reyk David Marc. "Oxidative phenomena in T lymphocyte activation." Thesis, The University of Sydney, 1997. https://hdl.handle.net/2123/27622.

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Murine lymph node cells (LNC) were used as model for the assessment of a role for reactive oxygen species (ROS) in T lymphocyte activation. When 2’7’- dichlorofluorescin (DCFHz) is oxidised it becomes the fluorescent compound dichlorofluorescein. Analysis of DCFHz-loaded LNC by flow cytometry identified an increase in DCFH2 oxidation upon stimulation with a mitogenic dose of the phorbol ester, phorbol myristate acetate. This could also be seen, although to a lesser extent, with a mitogenic dose of the lectin concanavalin A. The phorbol ester-induced increase in DCFH2 oxidation was inhibited

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38

Sanyal, Debraj. "Isoindoline nitroxide antioxidants : a spin trapping investigation of the radical reactions of biologically important substrates." Thesis, Queensland University of Technology, 1999.

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39

Kang, Lori S. "Aging and gender in the coronary microcirculation effects of O₂ and H₂O₂ /." Morgantown, W. Va. : [West Virginia University Libraries], 2009. http://hdl.handle.net/10450/10213.

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Abstract (sommario):

Thesis (Ph. D.)--West Virginia University, 2009.<br>Title from document title page. Document formatted into pages; contains viii, 109 p. : ill. (some col.). Vita. Includes abstract. Includes bibliographical references.

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40

Wang, Suwei. "Mechanisms of Cr(VI)-induced carcinogenesis the involvement of reactive oxygen species and signal transduction pathway /." Morgantown, W. Va. : [West Virginia University Libraries], 2001. http://etd.wvu.edu/templates/showETD.cfm?recnum=1803.

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Abstract (sommario):

Thesis (Ph. D.)--West Virginia University, 2001.<br>Title from document title page. Document formatted into pages; contains viii, 124 p. : ill. (some col.). Vita. Includes abstract. Includes bibliographical references.

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41

Zuo, Li. "Molecular Mechanisms of Stress-induced Reactive Oxygen Species Formation in Skeletal Muscle." The Ohio State University, 2002. http://rave.ohiolink.edu/etdc/view?acc_num=osu1038853894.

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42

King, Laura Emily. "Development and testing of a fluorometric method and instrument based on the 2',7' dichlorodihydrofluorescin assay for the measurement of reactive oxygen species." Thesis, Georgia Institute of Technology, 2012. http://hdl.handle.net/1853/45943.

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Abstract (sommario):

An online, semi-continuous instrument to measure both total and gas phase atmospheric reactive oxygen species (ROS) and determine the concentration of ROS in the particle phase (ROS(p)) was developed. This instrument was based on a fluorescent probe for quantifying ambient ROS, specifically 2'7'-dichlorodihydrofluorescin, or DCFH probe. This probe was analyzed for sensitivity to a variety of offline and online parameters for efficient use in a field instrument. The ROS(p) instrument measures the peak light intensity at 530 nm to determine ambient ROS concentrations. ROS particles and gases are

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43

Jackson, Bryan K. "A comparison of completion times between a 1.5-mile run on an indoor track and treadmill in physically active individuals /." Read thesis online, 2008. http://library.uco.edu/UCOthesis/JacksonBK2008.pdf.

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44

Wright, 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.

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45

Rogers, 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.

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46

Kalghatgi, 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.

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47

Widmann, Daniel [Verfasser]. "On the nature of active oxygen on supported Au catalysts : formation, stability and CO oxidation activity / Daniel Widmann." Ulm : Universität Ulm. Fakultät für Naturwissenschaften, 2012. http://d-nb.info/1021386367/34.

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48

Rani, Suriani Abdul. "Spatial Patterns of DNA Replication, Protein Synthesis, and Oxygen Concentration within Bacterial Biofilms Reveal active and Inactive Regions." Thesis, Montana State University, 2006. http://etd.lib.montana.edu/etd/2006/rani/RaniS0806.pdf.

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Abstract (sommario):

Biofilms harbor both active and inactive cells and it is a challenge to characterize the spatial and population heterogeneity of specific activities within a biofilm. Spatial patterns of DNA replication and protein synthetic activity were imaged by techniques developed using staphylococcal systems. The first technique measures DNA synthetic activity by pulse-labeling with the thymidine analog 5-bromo-2-deoxyuridine (BrdU) followed by immunofluorescent detection of brominated DNA. The second technique makes use of an inducible green fluorescent protein construct that can be used to detect the c

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49

Ogawa, Ken'ichi. "Function of CuZn-Superoxide Dismutase in Protection from and Utilization of Active Spe-cies of Oxygen in Plants." 京都大学 (Kyoto University), 1998. http://hdl.handle.net/2433/86528.

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50

Deb, Tapash K. "Bioinspired Redox Active Pseudotetrahedral Ni(II) Thiolate and Phenolate Complexes: Synthesis, Characterization, Alkylation Kinetics and Molecular Oxygen Activation." Ohio University / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1377256181.

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