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Dissertations / Theses on the topic 'Organisms'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

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1

Attwell, Arthur. "Simple Organisms." Master's thesis, University of Cape Town, 2001. http://hdl.handle.net/11427/7673.

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2

Золотова, Світлана Григорівна, Светлана Григорьевна Золотова, Svitlana Hryhorivna Zolotova, and I. Yu Matyushenko. "Genetically modified organisms." Thesis, Видавництво СумДУ, 2011. http://essuir.sumdu.edu.ua/handle/123456789/13467.

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3

Núñez, Marcé Mireia. "Emerging organic contaminants in aquatic organisms." Doctoral thesis, Universitat Rovira i Virgili, 2017. http://hdl.handle.net/10803/456825.

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Aquesta Tesi Doctoral se centra en el desenvolupament de nous mètodes analítics per determinar diferents contaminants orgànics emergents, com ara productes farmacèutics de consum generalitzat, els medis iodat de contrast per a raigs-X (un altre grup de productes farmacèutics emprats en la medicina de diagnòstic), i un grup d'edulcorants d'alta intensitat en organismes aquàtics. Dues tècniques d'extracció (extracció mitjançant líquids pressuritzats i QuEChERS) van ser avaluades per extreure els compostos seleccionats i diferents neteges també van ser provades. La determinació es va realitzar mi

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4

Leistenschneider, David. "Physical and chemical toxicity of microplastics on marine organisms." Electronic Thesis or Diss., Sorbonne université, 2024. http://www.theses.fr/2024SORUS283.

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L'objectif de cette thèse de doctorat est de mieux comprendre l'impact chimique et physique du plastique sur les organismes marins. La toxicité chimique du plastique provient soit de la lixiviation des produits chimiques des plastiques, soit de l'adsorption de polluants à la surfaces des plastiques. Étant donné que les expériences de lixiviation dans la littérature ont été réalisées avec des temps de lixiviation courts, des lixiviations jusqu'à 8 mois ont été réalisées. La toxicité et la composition en éléments inorganique des lixiviats ont été analysées. L'adsorption des polluants à la surfac

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5

Bonnefille, Bénilde. "Evaluation de l’approche métabolomique pour l’étude de la métabolisation et des effets du diclofénac chez la moule méditerranéenne." Thesis, Montpellier, 2017. http://www.theses.fr/2017MONTT085/document.

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Le travail de thèse présenté dans ce manuscrit porte sur la caractérisation de l’exposition des organismes aquatiques à un produit pharmaceutique (PP) et sur l’étude des perturbations métaboliques associées. Un PP récemment inclus dans la liste de vigilance de la directive cadre sur l’eau européenne (2015/495/EC), le DCF, et un organisme du milieu marin, Mytilus galloprovincialis, ont été choisis comme modèles de travail. L’approche méthodologique développée est une combinaison de l’analyse ciblée et non-ciblée des métabolites endogènes et exogènes (l’endo- et le xéno-métabolome) présents chez

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6

Chow, Stephanie S. Wold Barbara J. "Speciation in digital organisms /." Diss., Pasadena, Calif. : California Institute of Technology, 2005. http://resolver.caltech.edu/CaltechETD:etd-06062005-171257.

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7

Siebert, Tiago Henrique [UNESP]. "Análise do período de defeso do camarão marinho Artemesia longinaris através da maturidade ovariana anual." Universidade Estadual Paulista (UNESP), 2013. http://hdl.handle.net/11449/86662.

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Made available in DSpace on 2014-06-11T19:22:22Z (GMT). No. of bitstreams: 0 Previous issue date: 2013-02-25Bitstream added on 2014-06-13T20:48:47Z : No. of bitstreams: 1 siebert_th_me_jabo.pdf: 780967 bytes, checksum: 77d072c9560fa467e35c57e133f297b6 (MD5)<br>O Artemesia longinaris é endêmica nas águas costeiras do Atlântico Sul, e ocorre a partir da costa do Rio de Janeiro até Puerto Rawson, Argentina. Assim, considerando a exploração das espécies naturais, é necessário estudar a dinâmica reprodutiva para a renovação do estoque natural da espécie, e contribuir para a adequação do fechament

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8

Siebert, Tiago Henrique. "Análise do período de defeso do camarão marinho Artemesia longinaris através da maturidade ovariana anual /." Jaboticabal, 2013. http://hdl.handle.net/11449/86662.

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Orientador: Irene Bastos Franceschini Vicentini<br>Coorientador: Rogério Caetano da Costa<br>Banca: Maíra Aparecida Stefanini<br>Banca: Bruno Cesar Schimming<br>Resumo: O Artemesia longinaris é endêmica nas águas costeiras do Atlântico Sul, e ocorre a partir da costa do Rio de Janeiro até Puerto Rawson, Argentina. Assim, considerando a exploração das espécies naturais, é necessário estudar a dinâmica reprodutiva para a renovação do estoque natural da espécie, e contribuir para a adequação do fechamento da pesca. O objetivo deste estudo foi caracterizar morfologicamente os diferentes estágios d

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9

Bajrai, Leena. "Organisms associated with amoebae infection." Thesis, Aix-Marseille, 2017. http://www.theses.fr/2017AIXM0055.

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Cette thèse présente nouveaux organismes trouvés dans d'échantillons d'eaux usées proviennent la zone sud de Jeddah, en Arabie Saoudite. Legionella saoudiensis, Kaumoebavirus, moumouvirus saoudien (SDMV), Yasminevirus et Bunga messiliensis qui sont isolés par une méthode de co-culture amibienne d'infection par Dictyostelium discoideum ATCC 44841, Vermamoeba vermiformis CDC-19, Acanthamoeba polyphaga Linc AP-1 , et Acanthamoeba griffinii, respectivement. Legionella saoudiensis, une souche bactérienne Gram-négative, en forme de bacille, LS-1T appartient au genre Legionella de la famille des Legi

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10

Vonsée, Henk John. "Urogenital micro-organisms in pregnancy." Maastricht : Maastricht : Datawyse ; University Library, Maastricht University [Host], 1989. http://arno.unimaas.nl/show.cgi?fid=5510.

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11

Mudge, Stephen Michael. "Carbonic anhydrase in marine organisms." Thesis, Bangor University, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.318943.

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12

Zhou, Yuming. "Optical properties of living organisms." Thesis, Open University, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.301878.

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13

Beanland, Timothy James. "The phylogeny of photosynthetic organisms." Thesis, University of Cambridge, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.385339.

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14

Miller, Luke Rex. "Evolution of highly fecund organisms." Thesis, University of Oxford, 2015. http://ora.ox.ac.uk/objects/uuid:60a9fcc7-b939-4075-be31-ed69014ad898.

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We develop and study the high-density limit of various new models in mathematical pop- ulation genetics. These models extend the Λ-Fleming–Viot process when there are two genetic types at the locus of study. Given a finite sample from a population undergoing these dynamics, a key tool for understanding the corresponding genealogy is the method of duality. We introduce the reproduction-linked mutation mechanism and consider how this affects the process of relative allelic frequencies and the genealogy. The second generalization incorporates two forms of natural selection – differential killing

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15

Reggi, Michela <1986&gt. "Biomineralization in calcifying marine organisms." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2015. http://amsdottorato.unibo.it/7096/1/Michela_Reggi_Tesi.pdf.

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The objective of this theses is to contribute to the wide discussion about the biological control level on the biomineralization operated by calcifying organisms. In particular the intra-crystalline organic matrix associated with different coral species was studied and its role in the process was investigated. The main goals obtained from the research on corals included: (i) the discovery of the species specific role of the intra-crystalline organic matrix molecules in the precipitation of calcium carbonate; (ii) the definition of the role of magnesium ions in the control of the macromolecules

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Reggi, Michela <1986&gt. "Biomineralization in calcifying marine organisms." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2015. http://amsdottorato.unibo.it/7096/.

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The objective of this theses is to contribute to the wide discussion about the biological control level on the biomineralization operated by calcifying organisms. In particular the intra-crystalline organic matrix associated with different coral species was studied and its role in the process was investigated. The main goals obtained from the research on corals included: (i) the discovery of the species specific role of the intra-crystalline organic matrix molecules in the precipitation of calcium carbonate; (ii) the definition of the role of magnesium ions in the control of the macromolecules

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17

Pathirana, Induruwa Charles. "Secondary metabolites from selected marine organisms." Thesis, University of British Columbia, 1986. http://hdl.handle.net/2429/27506.

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Marine organisms are known to produce secondary metabolites which have novel structures and are often biologically active. Chemical studies of biologically active metabolites from three different marine organisms led to the discovery of six new compounds and six previously known compounds. The brown alga Dictyota binghamiae is fairly abundant in British Columbia coastal waters. A chemical study of this alga yielded ten diterpenoids of which four are new compounds. All the new compounds, dictyoxide A (66), dictyol G acetate (68), dictyotriol A diacetate (69), and epidictyol B acetate (70) cont

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18

Till, Marisa. "Studies of New Zealand Marine Organisms." The University of Waikato, 2007. http://hdl.handle.net/10289/2498.

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The chemical study of three New Zealand marine organisms is described, along with a survey of the chemistry and biological activity of eighty-five marine organisms collected from New Zealand waters. The study of the New Zealand marine bryozoan Pterocella vesiculosa has resulted in the isolation of three new compounds; pterocellin H, pterocellin I and 1-methyl-5-bromo-8-methoxy-β-carboline. These compounds were characterised using high resolution mass spectrometry, one- and two-dimensional nuclear magnetic resonance spectroscopy and X-ray crystallography. The biological activity of these compou

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19

Edwards, N. J. "Ammonia metabolism in rumen mirco-organisms /." Title page, contents and summary only, 1985. http://web4.library.adelaide.edu.au/theses/09AB/09abe26.pdf.

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20

Psarrakos, Panagiotis. "Disulphide bond formation in multicellular organisms." Thesis, University of Kent, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.497681.

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21

Carter, Laura. "Uptake of pharmaceuticals into terrestrial organisms." Thesis, University of York, 2013. http://etheses.whiterose.ac.uk/4678/.

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Over the past decade, there has been increasing scientific interest in the occurrence, fate and effects of pharmaceuticals in the environment. To date, the majority of this research has focussed on the aquatic environment whilst the terrestrial environment has remained relatively unexplored. Research carried out in the terrestrial environment has primarily focussed on the fate of pharmaceuticals in soils as well as the uptake of pharmaceuticals into plants. Less information is available on the uptake of pharmaceuticals into other soil dwelling species. The studies presented in the thesis were

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22

Bi, Ran. "Lignocellulose Degradation by Soil Micro-organisms." Doctoral thesis, KTH, Träkemi och massateknologi, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-182336.

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Lignocellulosic biomass is a sustainable resource with abundant reserves. Compared to petroleum ‐ based products, the biomass ‐ derived polymers and chemicals give better environmental profiles. A lot of research interest is focused on understanding the lignocellulose structures. Lignin, among the three major wood components, represents most difficulty for microbial degradation because of its complex structure and because cross ‐ linking to hemicellulose makes wood such a compact structure. Nevertheless, wood is naturally degraded by wood ‐ degrading micro ‐ organisms and modified and partly d

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23

Allen, Catherine Elizabeth. "Lipid profiles of deep-sea organisms." Thesis, University of Southampton, 1998. https://eprints.soton.ac.uk/42077/.

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Lipids are a group of biologically important compounds that may be used as indicators of relationships between an organism and its environment. Lipid class composition identifies types of storage lipid which can suggest a pelagic or benthic existence and may be used to measure the condition of an organism. Fatty acid composition may reflect trophic ecology. Lipid profiling has been used to elucidate elements of the ecology of organisms from Mid-Atlantic and Juan de Fuca Ridge hydrothermal vents and shrimp from below a permanent oxygen minimum zone. Lipid profiles of these organisms from extrem

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24

Pao, Shi-Chiang. "Halophilic organisms in sufu, Chinese cheese /." The Ohio State University, 1994. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487857546388848.

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25

López, i. Losada Raül. "Analysing toxicity for biochemical-producing organisms." Thesis, KTH, Hållbarhet och miljöteknik, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-235713.

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Using macroalgae as bio-feedstock for the bio-based plastic industry is a developing process that possesses inherent comparative advantages with regard to its environmental impacts compared to using other bio-feedstock sources. Thus, research effort is considered necessary to improve its competitiveness and resolve the technical challenges that it is currently facing. Within this context, this thesis aims at improving existing knowledge on ecotoxicity impacts from metals found in macroalgae tissue to microbes used within bio-reactors for their fermentation. The basis for a novel impact pathway

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26

Maeda, Hiroshi. "Vitamin E functions in photosynthetic organisms." Diss., Connect to online resource - MSU authorized users, 2006.

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27

Smith, E. C., Phillip R. Scheuerman, and Kurt J. Maier. "Toxicity of Nanomaterials to Aquatic Organisms." Digital Commons @ East Tennessee State University, 2005. https://dc.etsu.edu/etsu-works/2939.

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28

Hoffman, Jennifer. "Effects of and defenses against ultraviolet radiation in marine embryos and larvae /." Thesis, Connect to this title online; UW restricted, 2002. http://hdl.handle.net/1773/5243.

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29

Lamotte, Hadrien. "Libération de composés intracellulaires par application d'arcs électriques entre électrodes immergées." Thesis, Université Grenoble Alpes (ComUE), 2017. http://www.theses.fr/2017GREAI122/document.

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Cette thèse est consacrée à l’étude d’une technique innovante de lyse de microorganismes, fondée sur l’utilisation d’impulsions haute tension en milieu aqueux. Cette technique se distingue de l’électroporation qui exploite le champ électrique produit pour dégrader la membrane cellulaire ; dans notre étude les impulsions haute tension permettent la formation d’arcs électriques produisant de multiples phénomènes physico-chimiques qui peuvent entraîner la lyse des microorganismes.L’efficacité du procédé a été évalué sur les microorganismes suivants : des microalgues productrices d’huile (Nannochl

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30

Oehmen, Adrian. "The competition between polyphosphate accumulating organisms and glycogen accumulating organisms in the enhanced biological phosphorous removal process /." [St. Lucia, Qld.], 2004. http://www.library.uq.edu.au/pdfserve.php?image=thesisabs/absthe18339.pdf.

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31

Panzarini, Nathalie Hamine. "Panorama de OGM’S na cadeia de suprimentos de farinhas e preparados a base de trigo." Universidade Tecnológica Federal do Paraná, 2015. http://repositorio.utfpr.edu.br/jspui/handle/1/1564.

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CAPES<br>Os debates atuais sobre a inserção dos OGM’s nos produtos alimentícios, bem como seus riscos e benefícios no que diz respeito a alimentos, continuam inconclusos. Percebe-se que a sociedade em geral tem informação insuficiente a respeito do assunto e as empresas que estão envolvidas não realizam uma exposição eficiente a respeito do assunto. No Brasil, existem poucos laboratórios públicos ou privados que trabalham com a finalidade objetivo de detectar e quantificar os resíduos OGM’s em alimentos. Torna-se fundamental que as informações sobre esse tipo de produto, cada vez mais consumid

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32

Kachtík, Michal. "Revitalizace vybraného úseku vodního toku." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2016. http://www.nusl.cz/ntk/nusl-240187.

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The topic of the submitted thesis is to carry out revitalization of a selected section of a watercourse. At first, the actual conditions of the riverbed and its surroundings are described. In the following part of the thesis the description of the newly designed watercourse section is focused. The main goal of the new design is to improve the life conditions both in and around the watercourse as well as to support its self-cleaning process.

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33

Heuett, William J. "New methods for modeling large-scale biochemical networks /." Thesis, Connect to this title online; UW restricted, 2005. http://hdl.handle.net/1773/6769.

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34

Avio, Carlo Giacomo. "Ecotoxicological risk of microplastics for marine organisms." Doctoral thesis, Università Politecnica delle Marche, 2016. http://hdl.handle.net/11566/243067.

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La presenza di Microplastiche (MP) negli oceani rappresenta una problematica emergente per l’ecosistema marino; è ormai stato dimostrato che le MP possono essere ingerire da diverse specie di organismi, ma non è stata ancora dimostrata la capacità di trasferimento trofico e di accumulo di queste microparticelle, e sono ancora molto carenti le informazioni sui effetti avversi indotti. In questo lavoro di ricerca, il ruolo di alcuni polimeri plastici, come vettori di inquinanti chimici, è stato inizialmente valutato su campioni di macro-plastiche vergini, macro- e micro-plastiche spiaggiate. Tr

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35

Mostafa, Wael M. Abdel-Mageed. "Investigations of secondary metabolites from marine organisms." Thesis, Available from the University of Aberdeen Library and Historic Collections Digital Resources. Online version available for University member only until Sep. 1, 2014, 2009. http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?application=DIGITOOL-3&owner=resourcediscovery&custom_att_2=simple_viewer&pid=53365.

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36

Lam, Chi-wah. "Antibacterial effects of nanoparticles on cariogenic organisms /." View the Table of Contents & Abstract, 2005. http://sunzi.lib.hku.hk/hkuto/record/B31490414.

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37

Lock, Malcolm William. "Studies of Proteins from Extremophilic Micro-organisms." Thesis, University of Sheffield, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.485113.

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Organisms from extreme environments have adapted to multiple stress factors induced by the local environment. The use of micro-:organisms from these environments can provide novel insights into cell and macromolecule function. Two such studies are presented in this thesis. . Firstly the tolerance of elevated magnesium chloride concentrations by the extreme halophile, Haloferax volcanii, which was isolated from the Dead Sea. The saturating salt conditions expose the Archaeon to 2.0 M MgCh and 2.1 M NaCI. The resultant osmotic pressure across the cell membrane is stabilised by saline equivalence

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38

Zelmer, Carla Dale. "Root-associated organisms of the Cypripedioideae (Orchidaceae)." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2002. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp05/NQ65843.pdf.

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39

Connolly, Helen. "The formation of halocarbons by marine organisms." Thesis, Bangor University, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.280676.

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40

Phipps, Richard K. "Natural products from marine derived micro-organisms." Thesis, University of Canterbury. Chemistry, 2002. http://hdl.handle.net/10092/5796.

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A large number of micro-organisms were cultured from marine substrates collected from multiple sites along the coast of the South Island of New Zealand. Depending on growth rate and colony morphology the micro-organisms were classified as terrestrial, facultative marine or obligate marine. Micro-organisms were selected for large scale culture and extraction based on either apparent unusual morphology or observed cytotoxicity in small scale extracts. Two very pale yellow compounds were isolated from cytotoxic extracts prepared from culture broths of a Fusarium sp. The first compound (A) was id

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41

Li, Shangxiao. "Bioactive compounds from New Zealand marine organisms." Thesis, University of Canterbury. Chemistry, 1988. http://hdl.handle.net/10092/7314.

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Primary screening of recent collections from the sea around New Zealand revealed a wide range of bioactivities, including antitumour, antiviral and anti-HIV activities. Seven marine organisms, including sponges and an ascidian, were examined to identify the active compounds responsible for these three type of biological activities. A chemical screening protocol was established for the dereplication and prioritization of antiviral natural product extracts, which was also applied to extracts with other bioactivities. A recent modification included HPLC analysis of the eluates from solid phase e

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42

林志華 and Chi-wah Lam. "Antibacterial effects of nanoparticles on cariogenic organisms." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2005. http://hub.hku.hk/bib/B45007743.

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43

Fasthén, Patrick. "Diachronic Identity : Temporal Plasticity of Functional Organisms." Thesis, Högskolan i Skövde, Institutionen för kommunikation och information, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:his:diva-6550.

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Eliminative materialism is a view that has been sparsely acknowledged and often overlooked when it comes to providing us with a criterion of what it takes for you and me to persist over time. This owes much to its counterintuitive belief in the non-existence of folk-psychological notions, such as persons. Against a backdrop of philosophical and scientific inquiry, this paper amounts to providing such a criterion in the form of f-organisms, taking a different route based on emergent descriptions, instead of conventional reductive explanations. The temporal plasticity (change over time) of such

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44

Welburn, Susan Christina. "The rickettsia-like organisms of Glossina spp." Thesis, University of Bristol, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.240341.

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45

Schutte, Mart-Alet (Martha Aletta). "Molecular characterization of Sulfobacillus and related organisms." Thesis, Stellenbosch : Stellenbosch University, 2004. http://hdl.handle.net/10019.1/53753.

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Thesis (MSc)--University of Stellenbosch, 2004.<br>ENGLISH ABSTRACT: Thirteen Sulfobacillus strains from different geographical locations and two Alicyclobacillus strains were included in this study. These organisms proved to be moderately thermophillic (two different sets of optimal temperatures of 45°C and 55°C were found), Gram-positive, endospore forming bacteria. The pH optima of the strains tested was pH 2.5 and the pH range lay between pH 1.5 and pH 5.0. It was established that some strains of Sulfobacillus had the capacity for anaerobic growth when using ferric iron as an electr

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46

Ziehm, Matthias Fritz. "Computational biology of longevity in model organisms." Thesis, University of Cambridge, 2014. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.648888.

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47

Dandachi, Iman. "Multi drug resistant organisms in Lebanese livestock." Thesis, Aix-Marseille, 2018. http://www.theses.fr/2018AIXM0286/document.

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De nos jours, l'épidémiologie des bactéries multi-résistantes a évolué et ne se limite plus aux milieux hospitaliers. En effet, les animaux sont désormais considérés comme d’importants réservoirs de bactéries multi-résistantes, notamment des Bacilles à Gram négatif sécréteurs de bêta-lactamases et/ou résistant à la colistine. L'émergence de ces bactéries chez les animaux est due principalement à l’utilisation excessive d’antibiotiques en tant que prophylaxie et facteurs de croissance. Le transfert d’organismes multi-résistants aux antibiotiques provenant d’animaux vers les humains est un probl

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48

Hidas, Eszter Zsofia. "The patterns of abundance and demography of rocky intertidal marine invertebrates indicate that recruitment can set geographical range limits." Access electronically, 2007. http://www.library.uow.edu.au/adt-NWU/public/adt-NWU20080917.090811/index.html.

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49

Ahmed, Mansoor. "Numerical simulations of micro-organisms in shear flows." Thesis, KTH, Mekanik, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-31044.

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50

Tischler, Mark. "Secondary metabolites from selected British Columbian marine organisms." Thesis, University of British Columbia, 1987. http://hdl.handle.net/2429/26650.

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The two purine alkaloids, phidolopin (36) and desmethylphidolopin (37), originally isolated from Phidolopora pacifica, were synthesized in order to produce sufficient quantities of the natural products for extended biological and pharmacological screening and to confirm the previous structural assignment of 37 which was based on spectral data. Various combinations of phidolopin (36), desmethylphidolopin (37), 4-hydroxymethyl-2-nitrophenol (38) and 4-methoxymethyl-2-nitrophenol (39) were isolated from four different species of bryozoans, Diaperoecia californica, Heteropora alaskensis, Tricella

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