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Dissertations / Theses on the topic 'Bacterial Organism'

Author: Grafiati

Published: 5 June 2025

Last updated: 2 August 2025

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1

Auton, K. A. "The oxidation of methylamine by the obligate methylotroph, organism 4025." Thesis, University of Southampton, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.233262.

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2

Sowerby, Zoe. "Bacterial n-nitrosation and nitrite reduction in the model organism Neisseria subflava." Thesis, Nottingham Trent University, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.241830.

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3

King, Rebecca May. "Characterisation of Host-Bacterial Interaction in the Invasion Process of C. jejuni." Thesis, Griffith University, 2011. http://hdl.handle.net/10072/365520.

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Campylobacter jejuni is a major cause of human bacterial gastroenteritis worldwide, however despite its importance, relatively little is known about its mechanisms of pathogenesis or interaction with the host. Previous studies have identified flagella, motility, and other surface structures as essential requirements for C. jejuni pathogenesis, with exact interactions still to be elucidated. It has been hypothesised that C. jejuni interacts with cell surface glycoproteins known as mucins; these structures have previously been identified as chemoattractants for C. jejuni. Specifically, MUC1 is a

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4

Robinson, Penny Eleanor. "The epidemiology of Xanthomonas campestris pv. vitians causal organism of Bacterial Leaf Spot of lettuce." [Gainesville, Fla.] : University of Florida, 2003. http://purl.fcla.edu/fcla/etd/UFE0002852.

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5

Flewellen, James Lewis. "Digital holographic microscopy for three-dimensional studies of bacteria." Thesis, University of Oxford, 2012. http://ora.ox.ac.uk/objects/uuid:94ff344b-51ec-41c5-a5f8-c579e16dccd7.

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Holography has the ability to render three-dimensional information of a recorded scene by capturing both the amplitude and phase of light incident on the recording medium. The application of digital camera technology and high-speed computing means digital holograms can be analysed numerically and novel applications can be found for this technology. This thesis explores the potential for both inline and off-axis digital holographic microscopy to study the three-dimensional swimming behaviour of bacteria. A high-magnification (225x) digital holographic microscope was designed and constructed wit

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6

Temple, Graham Stuart. "Pseudomonas stutzeri : characteristics of the organism and its cell envelope." Thesis, University of Hull, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.304438.

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7

Al-Hamami, L. A. A. J. "Evaluation of factors influencing salmonella food-poisoning organisms in meat." Thesis, University of Strathclyde, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.382280.

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8

Egan, Suhelen Microbiology &amp Immunology UNSW. "Production and regulation of fouling inhibitory compounds by the marine bacterium Pseudoalteromonas tunicata." Awarded by:University of New South Wales. Microbiology and Immunology, 2001. http://handle.unsw.edu.au/1959.4/17838.

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The marine surface-associated bacterium Pseudoaltermonas tunicata, produces a range of compounds that inhibit fouling organisms, including invertebrate larvae, bacteria, algal spores and fungi. In addition to these antifouling compounds P. tunicata cells produce both a yellow and a purple pigment. The aim of this study was to further characterise the antifouling activities, their regulation and relationship with pigmentation, and the ecological significance of P. tunicata and related organisms. It was discovered that the anti-algal compound was extracellular, heat sensitive, polar and betwe

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9

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

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10

Clegg, Christopher David. "The effect of soil invertebrates on the survival of genetically modified organisms." Thesis, University of Exeter, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.262433.

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11

Kauppi, Anna. "Chemical attenuation of bacterial virulence : small molecule inhibitors of type III secretion." Doctoral thesis, Umeå : Department of Chemistry, Umeå University, 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-936.

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12

Perry, Elizabeth. "Gene, Organism and Environment: Understanding Patterns of Genome Evolution in Bacteria and Bacteriophage." Thesis, University of Oregon, 2013. http://hdl.handle.net/1794/13275.

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For my dissertation research, I used a model system of bacteria and bacteriophage to study patterns of genome evolution. I performed whole-genome sequencing of replicate populations to determine the genetic changes responsible for a repeatable pattern of coevolution between bacteria and phage. I found that genetic changes conferring resistance in bacteria negatively impacted other traits such as growth rates and sensitivity to antibiotic. Different resistance mutations varied in the magnitude of their pleiotropic costs, and this resulted in a fixation bias favoring mutations that minimize

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13

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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14

Ruskin, Robert H. 1952. "Bacterial indicator organisms in various classes of cisterns in the U.S. Virgin Islands." Diss., The University of Arizona, 1996. http://hdl.handle.net/10150/191211.

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Because cisterns are exposed to the environment via their direct attachment to catchment surfaces, cistern water quality is often poor. In the U.S. Virgin Islands cisterns are involved in supplying the water needs for private homes, hotels, businesses and public housing, making them subject to the mandates of the Federal Safe Drinking Water Act. This study compares the results of the occurrence of various water quality indicators in Private Residential, Public Housing, and Hotels and Guest House cisterns in the U.S. Virgin Islands in a side-by-side analysis. Forty-seven separate independent va

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15

Lyutenko, M., and M. V. Miroshnichenko. "Bacteria in our lives." Thesis, Sumy State University, 2014. http://essuir.sumdu.edu.ua/handle/123456789/45351.

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Bacteria are an integral part of our lives. They don’t only surround us externally, but also live inside us. Most people think that the bacteria are harmful micro-organisms, but they are wrong. Along with the pathogenicity, they play an important role in ensuring the normal functioning of our body. Microbial colonies found on or in the body are normally benign or beneficial. Bacteria are the basis of the normal microflora of many systems, especially of the digestive tract. These microbial colonies carry out a series of helpful and necessary functions, such as aiding in digestion. They also pro

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16

Huang, Yi-Li. "Potential roles of bacterial quorum sensing and biofilm formation in the biofouling process /." View abstract or full-text, 2007. http://library.ust.hk/cgi/db/thesis.pl?AMCE%202007%20HUANG.

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17

Husted, James Ross. "Bacterial and fungal organisms in the vagina of normal cows and cows with vaginitis." Thesis, Texas A&M University, 2003. http://hdl.handle.net/1969.1/1310.

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Bacterial and fungal culturing was conducted on samples taken from the vaginal fornix of 106 cows, of which 42 had vaginitis and 64 had normal vaginas. The diagnosis of vaginitis and non-vaginitis samples was determined by histologic examination. Aerobic, anaerobic, and microaerophilic cultures were done. In addition, cultures were performed for Campylobacter sp., Ureaplasma sp., Mycoplasma sp., Tritrichomonas foetus, and fungi. All 106 samples contained mixed aerobic bacterial cultures. The more frequent aerobic isolates included Acinetobacter lwoffii, Arcanobacterium pyogenes, Escherichia co

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18

Mogg, Andrew. "The production and removal of dimethyl sulphide by marine micro-organisms." Thesis, University of Aberdeen, 2012. http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?pid=195805.

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19

MINNECI, MARCO. "DETECTION AND ISOLATION OF THE BACTERIAL SECOND MESSENGER (P)PPGPP." Doctoral thesis, Università degli Studi di Milano, 2021. http://hdl.handle.net/2434/840186.

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This work has been carried out within the framework of the ERC funded project ERACHRON (Eradicating chronic infection), directed to the study of the chemical biology of bacterial persisters. Persisters are dormant phenotypic variants that are present in small amount in microbial populations. This phenotype shows high tolerance to antibiotics and for this reason it plays a key role in chronic infections. Indeed, after antibiotic treatment kills most of the bacterial population, persisters surviving the treatment can revert to the active phenotype, resuming growth and restoring the original, ant

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20

Santos, Carla Gabaldo Pessoa dos. "Avaliação da passagem de micro-organismos por meio da interface entre implantes e conectores protéticos com parafusos convencionais planos e experimentais cônicos pela técnica DNA-Checkerboard." Universidade de São Paulo, 2017. http://www.teses.usp.br/teses/disponiveis/58/58131/tde-17052018-154257/.

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Apesar da confiabilidade e da sobrevivência relacionadas aos tratamentos com implantes, falhas das reabilitações orais implanto-suportadas ainda são persistentes. Estas falhas podem causar tanto danos mecânicos -como o afrouxamento do parafuso de retenção devido à instabilidade das conexões- quanto danos biológicos -como as reações inflamatórias nos tecidos peri-implantares devido à ocorrência de infiltração bacteriana através da interface implante/pilar e a consequente colonização do interior dos implantes e seus componentes. Os mecanismos responsáveis por estas falhas mecânicas/biológicas do

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21

Gauthier, Elisabeth. "Utilization of low molecular weight substrates by psychrotrophic meat spoilage organisms." Thesis, McGill University, 1990. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=59274.

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Four meat spoilage organisms were grown at 4$ sp circ$C for 7 d, in an aqueous extract of meat (Meat Juice Medium), and the levels of various nutrients in the extracts were measured. At an agitation rate of 50 rev$ cdot$min$ sp{-1},$ the four species reached viable counts of 10$ sp8$ Colony Forming Units (CFU)$ cdot$ml$ sp{-1},$ and the order of nutrient utilization was as follows: (1) glucose, (2) gluconate and urea, (3) glycerol, (4) glucose-6-phosphate. Several substrates were still present in the growth medium at the end of the growth period, namely lactate, glucose-6-phosphate and the two

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22

Mendes, Elisa Donalisio Teixeira. "Banho de clorexidina para prevenção de colonização e infecção por micro-organismos multirresistentes na unidade de transplante de células tronco e hematopoiéticas." Universidade de São Paulo, 2016. http://www.teses.usp.br/teses/disponiveis/5/5134/tde-02052016-144208/.

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Introdução: Infecções relacionadas à assistência de saúde (IRAS) representam hoje um dos principais desafios da qualidade do cuidado do paciente, principalmente em pacientes submetido a transplante de células tronco e hematopoiéticas (TCTH) O banho diário com a clorexidina (CHG) degermante a 2% tem sido proposto principalmente em unidades de terapia intensivas (UTIs) para diminuir a colonização bacteriana do paciente e assim diminuir IRAS. O objetivo deste estudo foi avaliar o impacto do banho com CHG degermante a 2% em unidade de internação de TCTH na incidência de infecção e coloniza

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23

Brota, Giovani Archanjo. "Ensaios ecotoxicológicos em organismos-teste Daphnia similis e Vibrio fischeri na avaliação de efluentes sanitários aplicados na cultura de eucalipto (Eucaliptus urograndis)." [s.n.], 2012. http://repositorio.unicamp.br/jspui/handle/REPOSIP/257995.

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Orientador: Alexandre Nunes Ponezi<br>Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Civil, Arquitetura e Urbanismo<br>Made available in DSpace on 2018-08-21T10:44:37Z (GMT). No. of bitstreams: 1 Brota_GiovaniArchanjo_M.pdf: 4346412 bytes, checksum: b44166c5b1e0b8b8123c49c267aa9a87 (MD5) Previous issue date: 2012<br>Resumo: O tratamento de esgoto doméstico é de fundamental importância para a manutenção da qualidade dos corpos hídricos e da vida aquática assim como para a conservação dos recursos naturais. Neste foco, os sistemas de tratamento como lagoas

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24

AVELLA, MATTEO ALESSANDRO. "Probiotics and fish development: studies of molecular changes in the host organism induced by beneficial bacteria." Doctoral thesis, Università Politecnica delle Marche, 2010. http://hdl.handle.net/11566/242165.

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25

Chivukula, Vasanta Lakshmi. "Commensal fecal bacteria : population biology, diversity, and usefulness as indicator organisms in reclaimed water." [Tampa, Fla] : University of South Florida, 2005. http://purl.fcla.edu/usf/dc/et/SFE0001334.

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26

Klein, Timothy Matsiko Ninsiima. "The isolation and characterisation of novel natural products from marine bacterial symbionts." University of the Western Cape, 2015. http://hdl.handle.net/11394/4747.

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>Magister Scientiae - MSc<br>Drug-resistant infections are a global health crisis and drastically hinder the treatment options to effectively combat disease. Today, natural products remain an important source of novel drug candidates. Micro-organisms, in addition to being a source of bioactive natural products, represent a sustainable source of these compounds. As the marine environment is largely underexplored, the oceans represent a potential source of novel NPs. This study aimed at the discovery of novel NPs from bacteria associated with novel marine invertebrate species endemic to the Sout

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27

D'Aoust, Frédéric. "The effects of organic acids and microcolony formation on the adhesion of meat spoilage organisms." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape10/PQDD_0003/MQ44153.pdf.

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28

Whitley, Katherine. "Phenotypic variants of lactic acid bacteria, their metabolism and relevance to probiotic criteria." Thesis, University of Huddersfield, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.323780.

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29

Stelzer, Sacha Biotechnology &amp Biomolecular Sciences Faculty of Science UNSW. "WmpR regulation of antifouling compounds and iron uptake in the marine bacterium Pseudoalteromonas tunicata." Awarded by:University of New South Wales. School of Biotechnology and Biomolecular Sciences, 2006. http://handle.unsw.edu.au/1959.4/29354.

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The dark-green pigmented marine bacterium Pseudoalteromonas tunicata produces several extracellular compounds against a range of common fouling organisms including bacteria, fungi, protozoa, diatoms, invertebrate larvae and algal spores. The regulator WmpR, which has N-terminal similarity to ToxR from Vibrio cholerae and CadC from Escherichia coli, controls all of the pigment and antifouling phenotypes. These compounds appear at the onset of stationary phase. The role of WmpR as a stationary phase regulator in P. tunicata was investigated in this thesis. Starvation and stress studies demonstra

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30

Giannantonio, David John. "Molecular Characterization of Microbial Communities Fouling Concrete Infrastructures." Thesis, Georgia Institute of Technology, 2008. http://hdl.handle.net/1853/24797.

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The objective of this study was to identify and characterize naturally-occurring communities of Bacteria and Fungi fouling the surfaces of concrete structures in Georgia, USA, through the use of culture-independent and culture-dependent approaches. Genomic DNA was extracted and ribosomal RNA genes were PCR amplified from 4 biofouled sites located in or around the cities of Atlanta, Gainesville, LaGrange, and Savannah. Bacterial and fungal community composition was determined by phylogenetic analysis. Molecular analysis revealed five bacterial phyla, and representatives of the phylum Cyanobac

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31

Caro, Quintero Alejandro. "The role of horizontal gene transfer in bacterial evolution." Diss., Georgia Institute of Technology, 2013. http://hdl.handle.net/1853/48979.

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Horizontal gene transfer (HGT) is probably the most important mechanism for functional novelty and adaption in bacteria. However, a robust understanding of the rates of HGT for most bacterial species and the influence of the ecological settings on the rates remain elusive. Four whole-genome comparative studies of free-living bacteria will be described that integrated physiological and ecological data with novel detection bioinformatic pipelines to elucidate the magnitude of HGT at three distinct levels of genetic relatedness: i) the species level, where overlapping ecological niche among co-oc

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32

Shallcross, Jane Amanda. "An investigation into gene probe methods to detect viable foodborne bacteria using Listeria monocytogenes as a model organism." Thesis, University of Reading, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.318623.

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33

Xu, Ying. "Antifouling compounds from deep-sea bacteria and their potential mode of action /." View abstract or full-text, 2009. http://library.ust.hk/cgi/db/thesis.pl?BIOL%202009%20XU.

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34

Al-Mamari, Ahmed. "Biocontainment system for bacterial antigen delivery carriers." Thesis, University of Edinburgh, 2017. http://hdl.handle.net/1842/28793.

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Genetically modified organisms (GMOs) are confined physically in order to contain their spread in nature and to minimise chances of horizontal gene transfer. However, with the potential that GMOs hold as cheap, reliable and efficient micro-machines, their eventual uncontrolled release into the wider space is becoming more likely. Indeed, their application as environmental sensors is largely increasing. Nevertheless, the field of synthetic biology may also afford solutions to the problem. A major potential application of GMOs is the delivery of antigens to human and animal hosts, through the ut

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35

Ståhle, Jonas. "Structure Elucidations of Bacterial Polysaccharides using NMR Spectroscopy and Bioinformatics." Doctoral thesis, Stockholms universitet, Institutionen för organisk kemi, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-146867.

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Carbohydrates are ubiquitous components in nature involved in a range of tasks. They cover every cell and contribute both structural stability as well as identity. Lipopolysaccharides are the outermost exposed part of the bacterial cell wall and the primary target for host-pathogen recognition. Understanding the structure and biosynthesis of these polysaccharides is crucial to combat disease and develop new medicine. Structural determinations can be carried out using NMR spectroscopy, a powerful tool giving information on an atomistic scale. This thesis is focused on method development to stud

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36

Griffith, James T. "The Influence of Antimicrobial use on Bacterial Resistance." ScholarWorks, 1992. https://scholarworks.waldenu.edu/dissertations/1395.

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Antimicrobial resistance is becoming an increasingly serious problem accompanied by relatively few studies examining the relationship between use and resistance. The present study undertakes a twenty year analysis of antimicrobial production and factors affecting antimicrobial use for a particular microorganism (Stp. faecalis)/antimicrobial agent (Cephalothin) combination. The period is inclusive of the market introduction of the agent and considerate of prescribing practices to the present time. The accumulated data reveal that there is indeed a relationship between total drug availability (m

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37

Serrano, Guilherme Coutinho de Melo. "Síntese e degradação de lisina em organismos superiores = uma possível origem bacteriana." [s.n.], 2010. http://repositorio.unicamp.br/jspui/handle/REPOSIP/317203.

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Orientador: Paulo Arruda<br>Dissertação (mestrado) - Universidade Estadual de Campinas, Instituto de Biologia<br>Made available in DSpace on 2018-08-16T11:56:55Z (GMT). No. of bitstreams: 1 Serrano_GuilhermeCoutinhodeMelo_M.pdf: 1314215 bytes, checksum: f2ea574317887a52e797252a637d3649 (MD5) Previous issue date: 2010<br>Resumo: A lisina é considerada um aminoácido essencial, pois é componente fundamental de proteínas e não pode ser sintetizado por animais, sendo necessário ingeri-lo em sua forma final. Sua concentração é baixa em cereais, principal fonte de alimento animal e sua carência pod

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38

ZANNINI, EMANUELE. "Sourdough lactic acid bacteria: biopreservation of bakery products by the production of antifungal metabolites." Doctoral thesis, Università Politecnica delle Marche, 2007. http://hdl.handle.net/11566/242584.

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39

Pereira, Camila Malvessi. "Caracterização de mreB de Xanthomonas citri subsp. citri codificando uma actina bacteriana /." Rio Claro, 2019. http://hdl.handle.net/11449/181581.

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Orientador: Henrique Ferreira<br>Resumo: Xanthomonas citri subsp. citri (X. citri) é o agente etiológico do cancro cítrico, uma doença que ataca todas as variedades comerciais de citros, causando prejuízos econômicos em vários países produtores. Em áreas endêmicas, o cancro cítrico é controlado principalmente por aplicação de bactericidas cúpricos. Compostos alternativos para controlar a doença são desejáveis, pois os bactericidas cúpricos causam impactos ambientais e podem induzir resistência em X. citri. Um passo importante para a descoberta e avaliação de novos compostos para controle de X.

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40

Albaugh, Catherine Elizabeth. "Degradation of monoaromatic compounds by an aerobic halotolerant alkaliphilic bacterium." Online access for everyone, 2005. http://www.dissertations.wsu.edu/Thesis/Summer2005/c%5Falbaugh%5F081905.pdf.

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41

Shah, Siddharth Prakashchandra. "LIPID COMPOSITIONS OF MICROBIAL ORGANISMS ISOLATED FROM EXTREME ENVIRONMENTS AND THEIR IMPLICATION IN THERMO STABILITY OF BACTERIAL CELL MEMBRANE STRUCTURE." Diss., Temple University Libraries, 2016. http://cdm16002.contentdm.oclc.org/cdm/ref/collection/p245801coll10/id/419298.

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Chemistry<br>Ph.D.<br>Microorganisms with an ability to thrive in harsh environments are referred as “extremophiles”. With advances in biotechnology, interest has grown in the extremophile research because of their unique macromolecules’ characteristics due to their growth environments. Over last decade, researchers have isolated many extremophiles from environments like volcano, salt lakes, hydrothermal vents, deep oceans, Antarctica glaciers etc. Macromolecules of these extremophiles are responsible for their survival in extreme environments. In this research work we have isolated lipid mole

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Figueiredo, Leila Aparecida. "Fluoroquinolonas na avicultura: impacto sobre a comunidade bacteriana em solos e organismos aquáticos." Universidade de São Paulo, 2015. http://www.teses.usp.br/teses/disponiveis/64/64135/tde-26062015-095445/.

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A produção de frango de corte é acompanhada por uma geração elevada de resíduos. Assim, o reuso da cama de aviário como adubo tem se mostrado como uma alternativa viável para a destinação adequada deste resíduo. Entretanto o emprego de fármacos utilizados na produção de aves de corte pode atingir o ambiente e gerar efeitos indesejados tanto na microbiota do solo quanto nos organismos aquáticos de ambientes lacustres próximos aos galpões de produção. O objetivo deste trabalho foi quantificar os fármacos norfloxacina (NOR), enrofloxacina (ENR) e ciprofloxacina (CIP) nas matrizes cama de aviário,

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Nordmark, Eva-Lisa. "Structural and Interaction Studies of Bacterial Polysaccharides by NMR Spectroscopy." Doctoral thesis, Stockholm : Institutionen för organisk kemi, Univ, 2004. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-284.

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44

Chorell, Erik. "Pilicides and Curlicides : Design, synthesis, and evaluation of novel antibacterial agents targeting bacterial virulence." Doctoral thesis, Umeå universitet, Kemiska institutionen, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-37161.

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New strategies are needed to counter the growing problem of bacterial resistance to antibiotics. One such strategy is to design compounds that target bacterial virulence, which could work separately or in concert with conventional bacteriostatic or bactericidal antibiotics. Pilicides are a class of compounds based on a ring-fused 2-pyridone scaffold that target bacterial virulence by blocking the chaperone/usher pathway in E. coli and thereby inhibit the assembly of pili. This thesis describes the design, synthesis, and biological evaluation of compounds based on the pilicide scaffold with the

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45

Mönnich, Julian [Verfasser], Tilmann [Akademischer Betreuer] Harder, Tilmann [Gutachter] Harder, and Thorsten [Gutachter] Brinkhoff. "Investigation of diatom-bacteria interactions with the model organism Thalassiosira rotula / Julian Mönnich ; Gutachter: Tilmann Harder, Thorsten Brinkhoff ; Betreuer: Tilmann Harder." Bremen : Staats- und Universitätsbibliothek Bremen, 2019. http://d-nb.info/1199537233/34.

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46

Firmino, Stella Maris. "Biossolubilização da calcopirita ('CU'FE'S IND. 2') na presença de íons cloreto /." Araraquara, 2013. http://hdl.handle.net/11449/88025.

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Orientador: Denise Bevilaqua<br>Banca: Fabiana Alexandrino<br>Banca: Versiane Albis Leão<br>Resumo: A recuperação de cobre a partir de calcopirita usando bactérias é o grande desafio da indústria mineradora atualmente. A biohidrometalurgia é um processo de exploração mineral bem estabelecido para a recuperação de cobre, no entanto não existe ainda um processo sendo aplicado comercialmente no mundo para a extração de cobre a partir de mineral calcopirítico. São inúmeras as alternativas que vem sendo estudada para o aumento da recuperação de cobre neste processo, a adição de cloreto é uma destas

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MARTINS, RENATA de S. L. "Avaliacao da toxicidade de aguas de chuva a organismos aquaticos." reponame:Repositório Institucional do IPEN, 2009. http://repositorio.ipen.br:8080/xmlui/handle/123456789/9471.

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Made available in DSpace on 2014-10-09T12:27:07Z (GMT). No. of bitstreams: 0<br>Made available in DSpace on 2014-10-09T13:56:20Z (GMT). No. of bitstreams: 0<br>Dissertacao (Mestrado)<br>IPEN/D<br>Instituto de Pesquisas Energeticas e Nucleares - IPEN-CNEN/SP

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MACIEL-REZENDE, Claudia Mara. "Síntese de derivados benzofenônicos com potencial antifúngico e anti-leishmania." Universidade Federal de Alfenas, 2012. https://bdtd.unifal-mg.edu.br:8443/handle/tede/359.

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As benzofenonas são amplamente utilizadas como intermediários sintéticos na indústria química e farmacêutica. Elas são alvo de contínuas investigações de interesse biológico devido a propriedades, tais como: inseticida, anti-agregação plaquetária, inibitória de xantine oxidase, antioxidante, antimicrobiano, anti-inflamatório e anti-proliferativo. Neste trabalho é descrita a síntese dos derivados metilados, butilados e prenilados das benzofenonas 2,4-diidroxibenzofenona, 4-hidroxibenzofenona e 4,4’-diidroxibenzofenona, seguido da caracterização por técnicas espectroscopicas e espectrométricas (

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Mai-Prochnow, Anne Gerda Erna Biotechnology &amp Bio-molecular Sciences UNSW. "Autolysis in the development and dispersal of biofilms formed by the marine bacterium Pseudoalteromonas tunicata." Awarded by:University of New South Wales. Biotechnology and Bio-molecular Sciences, 2006. http://handle.unsw.edu.au/1959.4/25537.

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The marine bacterium Pseudoalteromonas tunicata produces target-specific inhibitory compounds against bacteria, algae, fungi and invertebrate larvae and is frequently found in association with living surfaces in the marine environment. This study examined the ability of P. tunicata to form biofilms under continuous culture conditions within the laboratory. P. tunicata biofilms exhibited a characteristic architecture consisting of differentiated microcolonies surrounded by water-channels. Interestingly, a repeatable pattern of cell death in the centre of microcolonies was observed. The antibact

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Barbarroja, Ortiz Paula. "Estudio de la dinámica poblacional y actividad de los organismos nitrificantes en sistemas de depuración de aguas residuales." Doctoral thesis, Universitat Politècnica de València, 2019. http://hdl.handle.net/10251/124063.

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[ES] Las estaciones depuradoras de aguas (EDAR) tienen un papel fundamental en la protección del medio ambiente, evitan la llegada de nutrientes (nitrógeno y fósforo) y otros contaminantes a los ecosistemas acuáticos. El sistema más utilizado para la eliminación de nitrógeno en las EDAR es el proceso biológico de nitrificación-desnitrificación vía nitrato. El rendimiento de los sistemas biológicos está directamente relacionado con la estructura de la comunidad bacteriana y su metabolismo. En este trabajo se monitorizaron las variaciones temporales de las características fisicoquímicas del afl

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