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Teses / dissertações sobre o tema "Bacteria Effect of radiation on"

Autor: Grafiati

Publicado: 4 de junho de 2021

Última modificação: 1 de fevereiro de 2022

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1

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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2

Manners, Vicki. "Molecular studies on the radiation-resistant bacteria Deinococcus radiodurans and Deinobacter grandis." Thesis, University of Edinburgh, 1989. http://hdl.handle.net/1842/12557.

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3

Li, Sha. "Potency of nanoparticles to amplify radiation effects revealed in radioresistant bacteria." Thesis, Paris 11, 2014. http://www.theses.fr/2014PA112061/document.

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Les thérapies par irradiation sont utilisées pour traiter la plupart des cas de cancer. Une limitation majeure est l’induction de dommages dans les tissus sains. Par conséquent, l’amélioration du ciblage tumoral est un défi majeur. L'addition de nanoparticules (NPs) est proposée comme une nouvelle stratégie pour amplifier les effets des radiations dans les tumeurs (radiosensibilisation ). Les nanoparticules de Z élevé (platine, or, gadolinium) se révèlent être de bons candidats. Afin de développer de nouveaux nanoagents et d’améliorer les plans de traitement, il est nécessaire de mieux compren

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4

Alkan, Ufuk. "The effects of solar radiation, adsorption and sedimentation of the population of enteric bacteria in marine waters." Thesis, University of Newcastle Upon Tyne, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.359000.

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5

PEREIRA, MARCO A. dos S. "Estudo da acao da radiacao gama de sup(60)Co sobre Salmonella poona, Escherichia coli e Alicyclobacillus Acidoterrestris em polpa de manga congelada." reponame:Repositório Institucional do IPEN, 2009. http://repositorio.ipen.br:8080/xmlui/handle/123456789/9425.

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Made available in DSpace on 2014-10-09T12:26:42Z (GMT). No. of bitstreams: 0<br>Made available in DSpace on 2014-10-09T14:06:23Z (GMT). No. of bitstreams: 0<br>Tese (Doutoramento)<br>IPEN/T<br>Instituto de Pesquisas Energeticas e Nucleares - IPEN-CNEN/SP

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6

Kminek, Gerhard. "The effect of ionizing radiation on amino acids and bacterial spores in different geo- and cosmochemical environments /." Diss., Connect to a 24 p. preview or request complete full text in PDF format. Access restricted to UC campuses, 2003. http://wwwlib.umi.com/cr/ucsd/fullcit?p3090438.

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7

BLAY, CLAUDIA C. "Analise comparativa da reducao bacteriana com irradiacao do laser Er:YAG ou ponta montada em alta rotacao apos remocao de tecido cariado em dentina: estudo in anima nobile." reponame:Repositório Institucional do IPEN, 2001. http://repositorio.ipen.br:8080/xmlui/handle/123456789/10940.

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Made available in DSpace on 2014-10-09T12:45:51Z (GMT). No. of bitstreams: 0<br>Made available in DSpace on 2014-10-09T14:07:49Z (GMT). No. of bitstreams: 1 07504.pdf: 5692268 bytes, checksum: 60490f409615b73fe05c25c382b94a02 (MD5)<br>Dissertacao (Mestrado Profissionalizante em Lasers em Odontologia)<br>IPEN/D-MPLO<br>Intituto de Pesquisas Energeticas e Nucleares, IPEN/CNEN-SP; Faculdade de Odontologia, Universidade de Sao Paulo

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8

BORRELY, SUELI I. "Reducao da toxidade aguda de efluentes industriais e domesticos tratados por irradiacao com feixe de eletrons, avaliada com as especies Vibrio fischeri, Daphnia similis e Poecilia reticulata." reponame:Repositório Institucional do IPEN, 2001. http://repositorio.ipen.br:8080/xmlui/handle/123456789/10943.

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Made available in DSpace on 2014-10-09T12:45:52Z (GMT). No. of bitstreams: 0<br>Made available in DSpace on 2014-10-09T14:05:37Z (GMT). No. of bitstreams: 1 07546.pdf: 6655959 bytes, checksum: d53d0f4431174f96fa71e1f77ae4a138 (MD5)<br>Tese (Doutoramento)<br>IPEN/T<br>Instituto de Pesquisas Energeticas e Nucleares - IPEN/CNEN-SP

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9

BOIANI, NATHALIA F. "Remoção da toxicidade do fármaco propranolol e de sua mistura com cloridrato de fluoxetina em solução aquosa empregando irradiação com feixe de elétrons." reponame:Repositório Institucional do IPEN, 2016. http://repositorio.ipen.br:8080/xmlui/handle/123456789/27140.

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Submitted by Maria Eneide de Souza Araujo (mearaujo@ipen.br) on 2017-03-10T16:49:56Z No. of bitstreams: 0<br>Made available in DSpace on 2017-03-10T16:49:56Z (GMT). No. of bitstreams: 0<br>A saúde do meio ambiente vem sendo comprometida devido ao descarte incorreto de produtos e seus subprodutos. Dentre os contaminantes emergentes encontram-se os fármacos, causadores de problemas ambientais por serem descartados no meio ambiente através dos efluentes. As técnicas convencionais de tratamento são insuficientes na remoção de diversos fármacos, por apresentarem resíduos resistentes e baixa biodeg

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10

Almeida, Ana Rita Marques. "Combined effects of ultraviolet radiation and xenobiotics on zebrafish." Master's thesis, Universidade de Aveiro, 2013. http://hdl.handle.net/10773/12624.

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Mestrado em Biologia Aplicada - Microbiologia Clínica e Ambiental<br>Nowadays, climate changes are an imperative problem and multiple measurements made in the last years showed an increase of all wavelengths of solar radiance, specially the Ultraviolet radiation. In their natural environment organisms are not only affected by biotic and environmental factors, but also by abiotic factors such as xenobiotics. Besides, these both stressors can interact with each other being their combined effect unpredictable (producing additive, synergistic or antagonistic effect). This work aims to studying the

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11

Jensen, Brandi Jean. "The role of infrared radiation in the evolution and ecology of anaerobic photosynthetic bacteria." Laramie, Wyo. : University of Wyoming, 2008. http://proquest.umi.com/pqdweb?did=1594477811&sid=1&Fmt=2&clientId=18949&RQT=309&VName=PQD.

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12

Meneghel, Julie. "Study of the cryopreservation-related stresses in the lactic acid bacterium Lactobacillus delbrueckii subsp. bulgaricus through a global and multi-scale approach." Thesis, Université Paris-Saclay (ComUE), 2017. http://www.theses.fr/2017SACLA030.

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La cryopréservation engendre des dégradations variables de l’activité biologique et des fonctionnalités des bactéries lactiques, notamment chez Lactobacillus delbrueckii subsp. bulgaricus, un starter de l’industrie laitière. Le but de ce travail a été d’identifier les marqueurs cellulaires de cryorésitance et de cryosensibilité afin de mieux comprendre les mécanismes de dégradation sous-jacents et d’améliorer les performances industrielles des bactéries lactiques. La cryopresérvation a ici été considérée comme une combination de deux stress majoritaires : froid et osmotique. Une attention part

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13

Dijkstra, Camelia Elena. "Effect of diamagneic levitation on bacteria." Thesis, University of Nottingham, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.479268.

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14

Wahle, Peter Joseph 1961. "Radiation effects on power MOSFETs under simulated space radiation conditions." Thesis, The University of Arizona, 1989. http://hdl.handle.net/10150/277024.

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Application of power MOSFETs in spaceborne power converters was simulated by exposing devices to low-dose-rate ionizing radiation. Both radiation-hardened and nonhardened devices were tested with constant and switched gate biases during irradiation. In addition, some of the devices were under load. The threshold-voltage shifts were strongly bias dependent. The threshold-voltage shift of the nonhardened parts was approximately dose-rate independent, while the hardened parts exhibited significant dose-rate dependence. A pre-anneal dose-rate dependence was found for the interface-state buildup of

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15

Martinez, Laura-Maria Madeleine. "Effect of solar radiation on cetaceans." Thesis, Queen Mary, University of London, 2011. http://qmro.qmul.ac.uk/xmlui/handle/123456789/2420.

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Despite the marked deceleration in the amount of ozone lost at the poles each year, high levels of solar ultraviolet radiation (UVR) continue to reach our biosphere, potentially threatening living organisms, which owing to their life-histories and physiological constraints, are unable to avoid exposure to UVR. I aimed to demonstrate that cetaceans are affected by UVR and that they have adaptive mechanisms against exposure. Using histological analyses of skin biopsies and high-quality photographs, I characterized and quantified UVR-induced lesions in 184 blue, fin and sperm whales sampled in th

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16

Slaninová, Eva. "Metabolická a biofyzikální charakterizace bakteriálních buněk schopných akumulace PHA." Doctoral thesis, Vysoké učení technické v Brně. Fakulta chemická, 2021. http://www.nusl.cz/ntk/nusl-438297.

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This thesis deals with the characterization of bacterial cells capable of polyhydroxyalkanoates (PHA) accumulation. The dissertation thesis is written in the form of a discussed published publications which are attached to the thesis as appendixes. The work develops a study of the current topic of the protective functions of PHA and clarifies protective mechanisms against selected stressors. Firstly, we focused on the protective effects of PHA granules against UV radiation and osmotic stress, specifically hypotonic conditions. In the case of UV exposition, the cells protected themselves by sca

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17

Arrage, Andrew Anthony. "Characterization of DNA-repair potential in deep subsurface bacteria challenged by UV light, hydrogen peroxide, and gamma radiation." Thesis, This resource online, 1991. http://scholar.lib.vt.edu/theses/available/etd-08182009-040256/.

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18

Caló, A. (Antonio). "Electron spectroscopy of atoms and molecules using synchrotron radiation, UV radiation and electron impact." Doctoral thesis, University of Oulu, 2007. http://urn.fi/urn:isbn:9789514286650.

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Abstract The present thesis investigates the electronic structure of selected atoms and molecules in vapor phase. Electron spectroscopy is applied for studying the electronic transitions following excitation and ionization with electron and photon bombardment. The work focuses on the photoionization and Auger decay of selected noble gasses, and on the photoionization and Auger decay of core ionized or resonant excited alkali halide molecules. The experimental results are compared with theoretical predictions.

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19

Johns, Desmond J. "Effect of pH on phytoplankton and bacteria production." College Park, Md.: University of Maryland, 2009. http://hdl.handle.net/1903/9487.

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Thesis (M.S.) -- University of Maryland, College Park, 2009.<br>Thesis research directed by: Marine, Estuarine, Environmental Sciences Graduate Program. Title from t.p. of PDF. Includes bibliographical references. Published by UMI Dissertation Services, Ann Arbor, Mich. Also available in paper.

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20

Wadsworth, Jennifer Louise. "Microbial responses to extreme radiation environments." Thesis, University of Edinburgh, 2018. http://hdl.handle.net/1842/31217.

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Microorganisms are known to tolerate a variety of extreme environments, such as high and low pH, desiccation and a wide range of temperatures that would prove uninhabitable for most eukaryotic cells. However, extreme radiation exposure is a ubiquitous hazard to pro- and eukaryotic viability. Ionising and non-ionising radiation, and their associated high energies, cause damage to a cell in the form of DNA double-strand breaks, membrane deterioration, and lethal mutations. Radiation also induces secondary effects such as the production of reactive oxygen species, which attack and degrade organic

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21

Vorster, Werner. "The effect of microwave radiation on mineral processing." Thesis, University of Birmingham, 2001. http://etheses.bham.ac.uk//id/eprint/309/.

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Between 50% and 70% of the total energy used in the extraction process may be attributed to comminution. Microwave pre-treatment has been suggested as a means to decrease the energy requirements. A variety of mineral ores have been investigated and the effects of microwave radiation quantified in terms of the mineralogy, changes in the Bond Work Index, flotability and magnetic separation. It has been shown that microwave pre-treatment is most effective for coarse grained ores with consistent mineralogy consisting of good microwave absorbers in a transparent gangue (up to a 90% decrease in Bond

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22

Allred, Clark L. (Clark Lane) 1972. "Effect of radiation on silicon and borosilicate glass." Thesis, Massachusetts Institute of Technology, 2003. http://hdl.handle.net/1721.1/29965.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Materials Science and Engineering, 2003.<br>Includes bibliographical references (p. 245-255).<br>A study was made that is logically divided into two parts, both involving radiation damage effects. The first is a study of the effects of neutron and gamma radiation on the dimensions of two borosilicate glasses, Pyrex® and Hova SD-2®. These two glasses are commonly used as substrates for silicon microelectromechanical (MEMS) devices, and radiation-induced compaction in a substra.te can have deleterious effects on device performance.

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23

Zemp, Franz Joseph, and University of Lethbridge Faculty of Arts and Science. "The bystander effect : animal and plant models." Thesis, Lethbridge, Alta. : University of Lethbridge, Faculty of Arts and Science, 2008, 2008. http://hdl.handle.net/10133/685.

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Bystander effects are traditionally known as a phenomenon whereby unexposed cells exhibit the molecular symptoms of stress exposure when adjacent or nearby cells are traversed by ionizing radiation. However, the realm of bystander effects can be expanded to include any systemic changes to cellular homeostasis in response to a number of biotic or abiotic stresses, in any molecular system. This thesis encompasses three independent experiments looking at bystander and bystander-like responses in both plant and animal models. In plants, an investigation into the regulation of small RNAs has given

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24

Hind, John. "The effect of antibiotics on bacteria under hyperbaric conditions." Thesis, Manchester Metropolitan University, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.290430.

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25

Neto, Ricardo Francisco. "High pressure effect on malolactic bacteria growth and metabolism." Master's thesis, Universidade de Aveiro, 2013. http://hdl.handle.net/10773/11603.

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Mestrado em Biotecnologia<br>O Oenococcus oeni é uma espécie de bactéria de elevado interesse, nomeadamente enológico, porque é capaz de realizar a fermentação maloláctica (desacidificação do vinho) e reúne as condições essenciais para poder sobreviver às condições adversas do vinho. Por outro lado ao alta-pressão é uma tecnologia com grande potencial para explorar novas e promissoras aplicações na biotecnologia. Neste trabalho pretendeu-se avaliar o efeito de um tratamento de alta-pressão no metabolismo desta bactéria, nomeadamente na descarboxilação do ácido L-málico, no metabolismo de açúc

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26

MacPhail, Susan Helen. "Effect of intercellular contact on radiation-induced DNA damage." Thesis, University of British Columbia, 1988. http://hdl.handle.net/2429/27986.

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Chinese hamster V79-171B cells grown for about 24 hours in suspension culture display increased resistance to cell killing by ionizing radiation compared with cells grown as monolayers, an observation originally termed the "contact effect". More recently, development of that resistance was shown to be accompanied by changes in the conformation of the DNA which reduce its denaturation rate in high salt/weak alkali. These changes in DNA conformation, mediated by the cellular micro-environment, appear to be responsible for the contact effect. The conditions necessary for the development of the e

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27

Phillips, Stanley D. "Developing radiation hardening by design." Thesis, Atlanta, Ga. : Georgia Institute of Technology, 2009. http://hdl.handle.net/1853/29640.

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Thesis (M. S.)--Electrical and Computer Engineering, Georgia Institute of Technology, 2010.<br>Committee Chair: Cressler, John; Committee Member: Citrin, David; Committee Member: Shen, Shyh-Chiang. Part of the SMARTech Electronic Thesis and Dissertation Collection.

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28

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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29

Tangboonduangjit, Puangpen. "Intensity-modulated radiation therapy dose maps the matchline effect /." Access electronically, 2006. http://www.library.uow.edu.au/adt-NWU/public/adt-NWU20060724.095712/index.html.

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30

Young, Stephen Michael Radley. "The effect of intense laser radiation on atomic collisions." Thesis, University of Oxford, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.302895.

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31

Daar, Eman S. "Effect of ionizing radiation on hyaluronan and fibrous pericardium." Thesis, University of Surrey, 2010. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.540706.

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32

Chakravarthy, Usha. "The effect of gamma radiation on intraocular cellular proliferation." Thesis, Queen's University Belfast, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.317046.

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33

Phorah, Motee William. "The effect of radiation and convection on stellar oscillations." Doctoral thesis, University of Cape Town, 2007. http://hdl.handle.net/11427/4426.

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34

Peters, Chris (Christopher Joseph) Carleton University Dissertation Engineering Electrical. "MOSFET based gamma radiation detector." Ottawa, 1992.

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35

Smith, Mark William 1961. "Effect of infrared reflectance on stem temperatures of saguaros." Thesis, The University of Arizona, 1989. http://hdl.handle.net/10150/277222.

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The role of high infrared (IR) reflectance in the temperature regulation of a single species of cactus, Cereus giganteus (saguaro cactus), was investigated. Two independent methods were used to determine the effect of high near-IR reflectance on C. giganteus stem temperatures. The first method was to measure the surface temperature of two individual plants of comparable size and health, one of which was partially shaded by a canopy of loose sun-screening material. The second method involved the numerical solution on a computer of the energy balance, or heat transfer, equation for C. giganteus.

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36

Reinhard, Mark. "Radiation hardness study of high purity silicon and the development of a radiation damage monitoring system for silicon devices in mixed radiation fields /." Access electronically, 2003. http://www.library.uow.edu.au/adt-NWU/public/adt-NWU20040727.132611/index.html.

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37

Mo, Anthony John. "Effect of NaOH solutions on planktonic bacteria, biofilms, and lipopolysaccharide." Thesis, University of British Columbia, 2016. http://hdl.handle.net/2429/58354.

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Background: Eradicating bacteria, biofilms and harmful by-products such as LPS from the root canal system is important in providing successful endodontic treatment. To date no irrigant or medicament used in endodontics has been able to completely eradicate bacteria in the root canal system or detoxify all LPS. Aim: It is proposed that a novel solution containing NaOH (Sodium hydroxide), Sodium dodecyl sulfate (SDS) and an alcohol may have unique disinfective properties against bacterial factors highly relevant in endodontic treatment. Materials and Methods: Combinations of the proposed sol

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38

Kayagil, Fulya. "Effect Of Traditional Starter Cultures On Quality Of Cheese." Master's thesis, METU, 2006. http://etd.lib.metu.edu.tr/upload/12607103/index.pdf.

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In this study, the physico-chemical chances occurring in white cheese and possible effects of starter culture combinations to the ripening period during 30 days storage examinated. A total of thirty six lactic acid bacteria were isolated from a cheese made witohout using starter culture. For identification gram staining, catalase, gas production and coagulation tests were performed. For determination of species API50 CH (BioM&eacute<br>rieux) and partial 16S rDNA gene sequence analysis were used. Four cheese were produced, one by using commercial starter culture [Lyofast CMS (Lactococcus lacti

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39

Johnson, William H. "Lost life expectancy rate survey meter." Thesis, Georgia Institute of Technology, 1992. http://hdl.handle.net/1853/16408.

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40

Kabilan, Usha. "Studying the Effect of Low Doses of Ionization Radiation on Senescence in Human Lung Fibroblasts." Thesis, Université d'Ottawa / University of Ottawa, 2020. http://hdl.handle.net/10393/40982.

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The exposure to high doses of ionizing radiation (>5Gy) is unequivocally associated with increased cancer risk. However, there is substantial experimental evidence showing that in response to low doses of ionizing radiation (LDR: <100mGy), cells and organisms are benefitted with delayed ageing, improved immunity and reduced cancer growth. These intriguing findings have proposed the “Radiation Hormesis” hypothesis. Herein, I studied the senescence effects of LDR exposure to normal human HFL1 cells and examined transcriptional changes. I found that HFL1 cells exposed to 10 mGy of gamma radiation

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41

Habeeb, Fatema. "Bacteria-cytokines interactions : effect of normal bacterial flora of pathogenic bacteria on pro-inflammatory cytokines production in human blood." Thesis, University of Strathclyde, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.501921.

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42

Itoh, Yoshito, Yasuo Kitane, and Paramashanti. "Long-term performance of rubber bearing considering solar radiation effect." 土木学会, 2010. http://hdl.handle.net/2237/18846.

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43

Marty, Christoph. "Surface radiation, cloud forcing and greenhouse effect in the Alps /." Zürich, 2000. http://e-collection.ethbib.ethz.ch/show?type=diss&nr=13609.

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44

Xia, Zichao. "Effect of neutron radiation on the mechanical properties of B4C." Master's thesis, University of Central Florida, 2011. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/5087.

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B4C is an important engineering ceramic used in a number of different applications. One of the promising applications of B4C is in the nuclear industry. B4C has a high neutron absorption cross-section (600 barns) and that is why it can absorb neutrons without forming long lived radio nuclides. As a result, B4C is extensively used as control rods, shielding material and as neutron detectors in nuclear reactors. During the reactor’s operation, the B4C undergoes severe neutron radiation and defects, such as vacancies and helium bubbles, are generated in the structure. These defects are responsibl

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45

Millar, Samuel John. "The effect of ionising radiation on the appearance of meat." Thesis, Queen's University Belfast, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.241420.

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46

Pattenden, Caroline Sarah. "The effect of radiation on the thermal stability of polyisobutylene." Thesis, University of Birmingham, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.366649.

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47

Wyss, Rolf A. (Rolf Andreas). "Far-infrared radiation response of antenna-coupled quantum-effect devices." Thesis, Massachusetts Institute of Technology, 1995. http://hdl.handle.net/1721.1/33537.

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48

Bolsa, Ferruz Marta. "Oxygen effect in medical ion beam radiation combined with nanoparticles." Thesis, Université Paris-Saclay (ComUE), 2017. http://www.theses.fr/2017SACLS476/document.

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Environ 50% des patients recevant un traitement contre le cancer bénéficient de la radiothérapie. La radiothérapie conventionnelle consiste à utiliser des rayons X de haute énergie capables de traverser les tissus et de traiter des tumeurs situées en profondeur de façon non-invasive. Malheureusement, les rayons X ne font pas la distinction entre les tumeurs et les tissus sains, qui peuvent donc être endommagés. Cette non-sélectivité est à l’origine de graves effets secondaires, voire du développement de cancers secondaires. Par conséquent, l’amplification des effets radiatifs au sein de la tum

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49

Thurston, Gavin O. "Studies on the effect of radiation on 3T3 cell motility." Thesis, University of British Columbia, 1988. http://hdl.handle.net/2429/29441.

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The ability of mammalian cells to locomote is important in a variety of normal and pathological processes. Previous work has suggested that low doses of x-irradiation may perturb cell motility, a finding that may have important consequences in embryogenesis, cancer metastasis, and immune response. This thesis has sought to study in more detail the effect of radiation on mammalian cell motility. Work performed in other laboratories used the colloidal gold assay and time lapse cinemicroscopy to study x-irradiation induced changes to 3T3 fibroblast motility in tissue culture. These studies were

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50

Watson, Anna. "The effect of nutrient pulsing on competition between phytoplankton and bacteria." Thesis, Lancaster University, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.310355.

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