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Dissertations / Theses on the topic 'Intense ultraviolet (UV) radiation'

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Published: 2 June 2025

Last updated: 31 July 2025

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1

Martin, Virginie. "Etude de microdécharges comme source de rayonnement ultraviolet intense." Phd thesis, Université Paris Sud - Paris XI, 2011. http://tel.archives-ouvertes.fr/tel-00656909.

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La décontamination bactériologique des surfaces par lumière pulsée est un enjeu de société qui requiert le développement de nouveaux outils. Une technique ayant prouvée son efficacité est l'utilisation de lumière pulsée dans le domaine de longueur d'onde 200-280 nm (bande d'absorption de l'ADN). Dans ce travail, nous avons étudié deux sources, Décharge à Barrière Diélectrique (DBD) et réseaux de microdécharges permettant de générer un rayonnement à 222 nm correspondant à l'émission de l'exciplexe KrCl*. Nos études ont permis de démontrer qu'il était possible de produire des décharges dans de n

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2

Guo, Zhen. "Optimization of the photoresponse of ZnS-based UV detectors /." View Abstract or Full-Text, 2002. http://library.ust.hk/cgi/db/thesis.pl?PHYS%202002%20GUO.

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Thesis (M. Phil.)--Hong Kong University of Science and Technology, 2002.<br>Includes bibliographical references (leaves 76-77). Also available in electronic version. Access restricted to campus users.

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3

Meldrum, Lennox R. "Estimate of lifetime UV exposure for selected workers in South East Queensland." Thesis, Queensland University of Technology, 1998.

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4

Rady, Nicholas Henry Shiner David C. "Nonlinear UV laser build-up cavity an efficient design /." [Denton, Tex.] : University of North Texas, 2009. http://digital.library.unt.edu/permalink/meta-dc-9833.

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5

Chalus, Olivier Jean. "Study of nonlinear effects of intense UV beams in the atmosphere." Université Louis Pasteur (Strasbourg) (1971-2008), 2007. https://publication-theses.unistra.fr/public/theses_doctorat/2007/CHALUS_Olivier_Jean_2007.pdf.

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Les faisceaux lasers de hautes puissances déclenchent durant leur propagation la formation d’effets nonlinéaires. Si l’intensité est suffisamment élevée l’accumulation de ces effets peut provoquer un mode de propagation s’approchant des caractéristiques des guides d’ondes. Ce phénomène est appelé filamentation. Il est amplement complexe et extensivement étudié pour les faisceaux IR mais injustement ignoré pour l’UV. Dans cette thèse, l’étude du cas UV est traitée. Une double étude théorique pour caractériser le profil du faisceau et sa propagation est développée. Ensuite l’étude expérimentale

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6

Siebeck, Ulrike Elisabeth. "UV vision and visual ecology of reef fish /." St. Lucia, Qld, 2002. http://www.library.uq.edu.au/pdfserve.php?image=thesisabs/absthe16520.pdf.

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7

Garoli, Denis. "Development of Sensors for Ultraviolet Radiation Monitoring." Doctoral thesis, Università degli studi di Padova, 2008. http://hdl.handle.net/11577/3425004.

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Stratospheric ozone is known to be the most important atmospheric factor determining clear sky UV radiation reaching the Earth's surface. There are, however, other effects that influence the UV radiant energy transfer: cloud cover, aerosols, tropospheric ozone, and other gaseous pollutants. The relationships between various phenomena taking place in the atmosphere are complex and not well known. Therefore, ground based UV measurements are necessary to explore atmospheric changes and resultant effects on the biosphere and on the life. Moreover in this century the human will travel in space and

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8

Zeng, Minzhen. "Investigations of operating conditions to improve the UV transmittance in chemically enhanced primary treatment /." View abstract or full-text, 2009. http://library.ust.hk/cgi/db/thesis.pl?EVNG%202009%20ZENG.

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9

Kaplan, Jefferson Coker. "Effect of UV irradiation on properties of hot pressed aluminum nitride." Thesis, Georgia Institute of Technology, 1994. http://hdl.handle.net/1853/19480.

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10

Cooley, Nicola M. "Responses to supplementary UV radiation of some temperate meadow species." Thesis, University of East London, 2001. http://roar.uel.ac.uk/3573/.

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The growth and development of various meadow species was monitored while growing under enhanced UV-radiation in the natural light environment. Growth responses to supplementary ultraviolet-B (UV-B+A) were mostly inhibitory when compared to the ambient daylight treatment for Bellis perennis, Cardamine pratensis, Cynosurus critatus and Ranunculus ficaria. When the response of ultraviolet-A (UVA) treated plants were compared with those of the UV-B+A, differences were found which varied according to the species and parameter investigated. No correlation in B. perennis growth responses could be mad

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11

Li, Dongyun. "The effect of UV-laser radiation on lenses and lens proteins." Thesis, Georgia Institute of Technology, 1989. http://hdl.handle.net/1853/27271.

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12

Martin, Jr Daniel E. "Reduction of Microbial Load on Boneless, Skinless Chicken Breast Using Ultraviolet Radiation." Thesis, Virginia Tech, 2002. http://hdl.handle.net/10919/45331.

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This study examined the effectiveness of UV radiation in reducing numbers of naturally occurring aerobic psychotrophic bacteria, lactic acid bacteria, Campylobacter and surface inoculated E. coli on split, boneless, skinless chicken breasts and the effects the UV treatments had on the taste of the chicken. The objective of the study was to determine the UV dosage that gave the largest amount of microbial kill without adversely affecting the taste of the chicken. Two groups of 12 breasts were individually vacuum packaged. One group was surface inoculated with 1ml of a 2.0 X 106 CFU/ml culture

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13

Laakso, Kirsi. "Effects of ultraviolet-B radiation (UV-B) on needle anatomy and glutathione status of field-grown pines /." Oulu [Finland] : Oulun Yliopisto, 1999. http://herkules.oulu.fi/isbn9514254953.

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14

Allman, Amy Jane. "Effects of UV radiation on Marfan syndrome cells in culture." Virtual Press, 1993. http://liblink.bsu.edu/uhtbin/catkey/879841.

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Ultraviolet radiation causes an alteration in DNA by modifying neighboring thymine bases resulting in the formation of a dimer. These dimers block the processes of transcription and translation and ultimately no protein is synthesized and the cell dies. However, DNA repair mechanisms correct this damage by excising the dimer from the DNA strand and inserting replacement bases which are joined to the original strand by DNA ligase. This allows transcription to resume and ultimately protein synthesis to take place.This research focused on determining the DNA damage and subsequent repair levels in

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15

Kibe, Alison G. "Farm Scale Feasibility of Exploiting UV Radiation for Sustainable Crop Production." Scholarship @ Claremont, 2015. http://scholarship.claremont.edu/scripps_theses/605.

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The Food and Agriculture Organization of the United Nations predicts that food supplies will need to increase by 70 percent by 2050. To cope with this, farmers and technologies must adapt to produce higher yields and do so in harsher conditions associated with climate change. The shifting view of ultraviolet radiation may be one of a system of management approaches that agriculture could sustainably adopt to improve crop production. While this technology sounds promising, whether or not farmers choose to adopt the technology, on what scale, or when, is often ambiguous. These decisions are depe

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16

Cuesta, Esperanza-Raquel Gonzalez. "Responses of cultivated pea (Pisum sativum L.) to UV-B radiation (280-315nm)." Thesis, Lancaster University, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.337579.

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17

Knight, Grady C. "The molecular chaperone α-crystallin protects proteins from UV-induced aggregation". Diss., Georgia Institute of Technology, 1999. http://hdl.handle.net/1853/30486.

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18

Coombs, Anne-Marie. "A study of near-ultraviolet radiation induced oxidative damage in Escherichia coli." Thesis, University of Bath, 1988. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.380929.

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19

Burgueno, Pedro Osvaldo Cuadra. "Induced responses of Gnaphalium vira-vira and Gnaphalium luteo-album to UV-B radiation." Thesis, University of Reading, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.318582.

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20

Sabburg, Jeffrey Martin. "Quantification of cloud around the sun and its correlation with global UV measurement." Thesis, Queensland University of Technology, 2000.

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21

Whitehead, Kenia Luz. "Biogeochemistry of mycosporine-like amino acids (MAAs) : a new perspective on UV-absorbing compounds via liquid chromatography-mass spectrometry /." Thesis, Connect to this title online; UW restricted, 2002. http://hdl.handle.net/1773/10981.

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22

Salter, William Thomas. "Growing in Australia – plant strategies to survive intense solar radiation and soils lacking in phosphorus." Thesis, The University of Sydney, 2016. http://hdl.handle.net/2123/15479.

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Sunlight is essential to plants as the main energy source for photosynthesis, yet excess light that cannot be processed in photosynthesis can be damaging. Australian plants are regularly exposed to very intense light, enriched in ultraviolet (UV) radiation, placing them at direct risk of photodamage. Low inorganic phosphate (Pi) availability, characteristic of Australian soils, can reduce the energy threshold of photosynthesis and exacerbate photodamage. Whilst intense light and low Pi are common in Australian ecosystems, relatively little is known about the strategies generalist plant species

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23

Bao, Yiping. "Investigation of the mechanisms by which UV irradiation activates the tyrosinase gene." Thesis, University of Liverpool, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.366716.

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24

Howell, Anne C. "Effects of antioxidant vitamin treatment on UV-irradiated cells." Virtual Press, 1995. http://liblink.bsu.edu/uhtbin/catkey/941360.

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Ultraviolet (UV) radiation damages both eukaryotic and prokaryotic cells by causing the formation of free radicals which damage cell membranes and DNA. Antioxidant vitamins have been shown to protect cells from UV-induced damage by scavenging free radicals. The protection of skin and its normal flora is necessary for the health of individuals in resisting diseases caused by microorganisms and delaying the long-term damage caused by UV radiation.This research investigated the effects of the antioxidants vitamin A and ascorbic acid, as well as UV-irradiation on both prokaryotic (Staphylococcus e

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25

Verma, Meera Mary. "On the effect of UV-irradiation on DNA replication in Escherichia coli." Title page, contents and summary only, 1985. http://web4.library.adelaide.edu.au/theses/09PH/09phv522.pdf.

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26

Lake, Nicholas Charles Hermon. "Effects of solar ultraviolet radiation on fish with particular respect to the culture of turbot and gilthead bream." Thesis, Heriot-Watt University, 1990. http://hdl.handle.net/10399/854.

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27

Chae, Suhn-Kee. "DNA repair and mutagenesis in the UV-sensitive mutant UVSI of Aspergillus nidulans." Thesis, McGill University, 1993. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=41098.

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The effects of a newly mapped DNA repair-defective mutant, uvsI, on mutagen sensitivities and mutation were investigated. Results showed that uvsI differs for most of the investigated properties from other uvs mutants of A. nidulans which are known to belong to three different epistatic groups, "UvsF", "UvsC", and "UvsB". Most of these mutants are sterile and many of them alter mitotic recombination frequencies, while uvsI exhibits normal levels of meiotic and mitotic recombination. In addition, uvsI strains are not more sensitive than wild type to MMS (methyl methanesulfonate) to which all ot

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28

Fu, Yibing. "Pattern of genomic loci controlling morphological responses to UV-B radiation in maize (Zea mays L.) /." Electronic version (PDF), 2004. http://dl.uncw.edu/etd/2004/fuy/yibingfu.pdf.

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29

Berry, Nicole Lynn. "DOES DISSOLVED ORGANIC MATTER PROTECT MOSQUITO LARVAE FROM DAMAGE BY SOLAR ULTRAVIOLET RADIATION?" Miami University / OhioLINK, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=miami1547210872871561.

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30

Ho, Chiu Man. "Repression of photoreactivation and dark repair of coliform bacteria by TiO[subscript 2]-modified UV-C irradiation /." View abstract or full-text, 2009. http://library.ust.hk/cgi/db/thesis.pl?CIVL%202009%20HO.

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31

Yaghdjian, Laurence. "Etude des mécanismes de transformation de matériaux céramiques sous l'influence d'un rayonnement UV intense." Aix-Marseille 1, 2002. http://www.theses.fr/2002AIX11015.

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Cette thèse concerne l'étude de l'interaction entre un rayonnement laser à excimères KrF (248 nm) et deux céramiques, le nitrure de silicium (Si3N4) et le nitrure d'aluminium (AIN). Ces matériaux aux propriétés technologiques attractives (excellentes propriétés thermo-mécaniques pour Si3N4, conductivité thermique élevée et grande résistivité électrique pour AIN) ont de nombreuses applications en mécanique, électronique et micro-électronique. Leurs utilisations sont cependant encore limitées, en raison notamment d'une qualité de surface insuffisante et de difficultés d'usinage. L'étude des pote

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32

Carpenter, Lucy. "DNA repair pathways involved in determining the level of cytotoxicity of environmentally relevant UV radiation." Thesis, Lancaster University, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.340566.

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33

Smith, Andrew E. "The effect of enhanced ultraviolet-B radiation on the photosynthetic metabolism of terrestrial Antarctic plants." Thesis, Anglia Ruskin University, 2009. https://arro.anglia.ac.uk/id/eprint/581959/1/Andrew%20Edwin%20Smith%20thesis.pdf.

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The potential effect of increased UV-B radiation on photosynthetic activity and related processes in a range of terrestrial Antarctic plant species was investigated; from a chlorophyte alga to a vascular plant (Deschampsia antartica). The relative contribution of the UV-B waveband to photosystem II (PSII) damage was used to construct an action spectrum for those species found to be sensitive to UV-B exposure. Investigation involved non-invasive measurements of photosynthesis using chlorophyll-a fluorescence emission coupled with polarographic measurement of oxygen and infra-red gas analysis

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34

Smith, Andrew E. "The effect of enhanced ultraviolet-B radiation on the photosynthetic metabolism of terrestrial Antarctic plants." Thesis, Anglia Ruskin University, 2009. http://arro.anglia.ac.uk/581959/.

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The potential effect of increased UV-B radiation on photosynthetic activity and related processes in a range of terrestrial Antarctic plant species was investigated; from a chlorophyte alga to a vascular plant (Deschampsia antartica). The relative contribution of the UV-B waveband to photosystem II (PSII) damage was used to construct an action spectrum for those species found to be sensitive to UV-B exposure. Investigation involved non-invasive measurements of photosynthesis using chlorophyll-a fluorescence emission coupled with polarographic measurement of oxygen and infra-red gas analysis of

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35

Fatnasare, Ike S. "A study of the effect of water-pick up of UV curable offset ink on its curing time and its end use properties /." Online version of thesis, 1993. http://hdl.handle.net/1850/11169.

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36

Dev, Kumar Govindaraj. "Effect of Ozone and Ultraviolet Irradiation Treatments on Listeria monocytogenes Populations in Chill Brines." Thesis, Virginia Tech, 2008. http://hdl.handle.net/10919/35954.

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The efficacy of ozone and ultraviolet light, used in combination, to inactivate Listeria monocytogenes in fresh (9% NaCl, 91.86% transmittance at 254 nm) and spent chill brines (20.5% NaCl, 0.01% transmittance at 254 nm) was determined. Preliminary studies were conducted to optimize parameters for the ozonation of â freshâ and â spentâ brines. These include diffuser design, comparison of kit to standard methods to measure residual ozone, studying the effect of ozone on uridine absorbance and determining presence of residual listericidal activity post ozonation. An ozone diffuser was de

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37

Ploger, Desiree. "Effects of ultraviolet (UV) radiation on thermal, chemical, and rheological properties of rubber-modified asphalt binders." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2018.

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This research aims to investigate the thermal, chemical and rheological properties of UV-aged asphalt binders containing recycled tire rubber (RTR) powder. The UV Aging process changes the chemical composition and physical properties of asphalt and causes distress on pavement. It is known that the presence of crumb rubber (CR) reduces the susceptibility of asphalt to aging, but its mechanism is not fully understood. Moreover the rheological performance of a crumb rubber modified binder are still partially unknown. In this research, the effect of ultraviolet (UV) rays on samples of asphalt bi

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38

Du, Preez David Jean. "Changes in surface solar ultraviolet (UV) radiation related to changes in atmospheric conditions over South Africa." Thesis, La Réunion, 2021. http://www.theses.fr/2021LARE0020.

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Le rayonnement solaire ultraviolet (UVR) qui atteint la surface de la Terre varie en raison des changements des paramètres atmosphériques tels que la couverture nuageuse, l'ozone ou les concentrations d'aérosols. L'exposition personnelle excessive à des rayons ultraviolets solaires a des incidences importantes sur la santé de la population humaine, notamment le développement de cancers de la peau et de certaines cataractes. Les recherches présentées dans cette thèse visaient à quantifier les effets des aérosols et de l'ozone sur les UV de surface, ainsi qu'à estimer le risque de cancer des kér

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39

Macaluso, Amy L. "DIRECT AND INDIRECT EFFECTS OF ULTRAVIOLET RADIATION AND DISSOLVED ORGANIC MATTER ON FRESHWATER FLAGELLATES." Diss., Temple University Libraries, 2010. http://cdm16002.contentdm.oclc.org/cdm/ref/collection/p245801coll10/id/101579.

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Biology<br>Ph.D.<br>The purpose of this study was to examine the direct and indirect effects of ultraviolet-B (UV-B) radiation on freshwater protists. Laboratory experiments were conducted in order to determine the importance of photoenzymatic repair (PER) of UVBinduced DNA damage in the heterotrophic nanoflagellate Paraphysomonas sp. Investigations into the combined effects of UV-B and chromophoric dissolved organic matter (CDOM) were conducted in laboratory experiments in which protist cultures were exposed to UV-B radiation in the presence and absence of water amended to a higher CDOM conce

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40

Binyamin, Jacqueline. "Modelling spectral and broadband UV-B (290-325 nm) irradiance for Canada /." *McMaster only, 2001.

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41

Pahkala, Maarit. "Evolutionary ecology of ultraviolet-B radiation stress tolerance in amphibians." Doctoral thesis, Uppsala : Acta Universitatis Upsaliensis : Univ.-bibl. [distributör], 2001. http://publications.uu.se/theses/91-554-5081-4/.

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42

Laakso, K. (Kirsi). "Effects of ultraviolet-B radiation (UV-B) on needle anatomy and glutathione status of field-grown pines." Doctoral thesis, University of Oulu, 1999. http://urn.fi/urn:isbn:9514254953.

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Abstract It has been suggested that pine needles protect themselves against UV-B radiation via anatomical and chemical changes in the epidermal layer. This could lead to growth reductions if more assimilates are allocated to the protection mechanisms in the epidermis at the expense of the photosynthetic area. If the protection is insufficient, the UV-B radiation could cause oxidative stress. Moreover, the UV-B-induced stress could increase year by year and the responses could become cumulative. Therefore, two different UV-B field experiments were conducted at two sites. The first was a long-te

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43

Parker, Nicole Renee. "The role of kynurenine and UV light in lens protein modification." Access electronically, 2005. http://www.library.uow.edu.au/adt-NWU/public/adt-NWU20060720.111305/index.html.

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Thesis (Ph.D.)--University of Wollongong, 2005.<br>Typescript. EMBARGOED - This thesis is subject to a 12 month embargo (07/03/06 to 07/03/07) and may only be viewed and copied with the permission of the author. For further information please Contact the Archivist. Includes bibliographical references: leaf 236-266.

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44

Coates, Nicholas John Hewlett. "On the nature of the UV-inhibition of oriC and oriCc allele /." Title page, contents and summary only, 1996. http://web4.library.adelaide.edu.au/theses/09PH/09phc652.pdf.

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45

Newton, Kelley Nicole. "The Role of Nucleotide Excision Repair in Restoring Replication Following UV-Induced Damage in Escherichia coli." PDXScholar, 2012. https://pdxscholar.library.pdx.edu/open_access_etds/767.

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Following low levels of UV exposure, Escherichia coli cells deficient in nucleotide excision repair recover and synthesize DNA at near wild type levels, an observation that formed the basis of the post replication recombination repair model. In this study, we characterized the DNA synthesis that occurs following UV-irradiation in the absence of nucleotide excision repair and show that although this synthesis resumes at near wild type levels, it is coincident with a high degree of cell death. We confirm that the replication occurring under these conditions involves extensive levels of strand ex

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46

Rose, Kevin C. "CAUSES AND CONSEQUENCES OF VARIATION IN UV TRANSPARENCY FOR FRESHWATER ECOSYSTEMS." Miami University / OhioLINK, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=miami1304107334.

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47

Clarke, Ulrike. "Do ambient and elevated ultraviolet-B (UV-B) radiation affect the growth and photosynthesis of native British plants?" Thesis, University of Essex, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.343500.

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48

Matallana, Surget Sabine-Astrid Biotechnology &amp Biomolecular Sciences Faculty of Science UNSW. "Physiological and molecular responses of the marine oligotrophic ultramicrobacterium Sphingopyxis Alaskensis rb2256 to visible light and ultraviolet radiation." Awarded By:University of New South Wales. Biotechnology & Biomolecular Sciences, 2009. http://handle.unsw.edu.au/1959.4/43251.

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Ultraviolet radiation reaching the Earths surface (UVR, 280-400 nm) may penetrate deep into the clear oligotrophic waters influencing a large part of the euphotic layer. Marine heterotrophic bacteria at the surface of the oceans are especially sensitive to the damaging solar radiation due to their haploid genome with little or no functional redundancy and lack of protective pigmentation. In a context of climate change and ozone depletion, it is clearly important to understand the physiology and underlying molecular UVR responses of abundant marine bacteria species. We chose the marine ultrami

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49

Cheung, Lok Man. "Investigation of virus inactivation and by-products formation under sequential disinfection using UV irradiation and free chlorine/monochloramine /." View abstract or full-text, 2004. http://library.ust.hk/cgi/db/thesis.pl?CIVL%202004%20CHEUNG.

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Thesis (M. Phil.)--Hong Kong University of Science and Technology, 2004.<br>Includes bibliographical references (leaves 106-124). Also available in electronic version. Access restricted to campus users.

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50

Jia, Keqin. "Workers’ UV exposure and the subsequent impact on skin." Thesis, Queensland University of Technology, 2010. https://eprints.qut.edu.au/38658/1/Keqin_Jia_Thesis.pdf.

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Introduction: Excessive exposure to ultraviolet (UV) radiation from sunlight is a causative factor in the development of skin damage and skin cancer. Little research has been undertaken into assessing the sun exposure linking to skin damage inside buildings or behind window glass. This project directly addressed this issue by aiming to assess the role that UV exposure has on skin damage for indoor workers and drivers. Methods: Measurements of personal UV exposure using UV sensitive polymer dosimeters were undertaken of 41 indoor workers and 3 professional drivers. Physical measurements of

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