Bibliografias temáticas / Spores and Biofilms

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Literatura científica selecionada sobre o tema "Spores and Biofilms"

Autor: Grafiati

Publicado: 22 de junho de 2024

Última modificação: 31 de julho de 2025

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Artigos de revistas sobre o assunto "Spores and Biofilms"

Arnett, C. M., A. M. Beckman, M. D. Ginsberg, and V. F. Hock. "Influence of bacterial biofilms on Bacillus globigii spore viability in model chlorinated water distribution systems." Water Supply 10, no. 3 (2010): 277–85. http://dx.doi.org/10.2166/ws.2010.036.

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Viability of Bacillus globigii spores in chlorinated polyvinyl chloride (PVC) pipe loop systems were examined under oligotrophic conditions. Three 2.5 cm × 10 m pipe loops having poised free chlorine concentrations of 0.0, 0.5, and 1.0 mg/L were seeded with 3.0 × 108B. globigii spores each and viability was assessed over a 21 day period in both the recirculating waters and within the biofilms associated with pipe wall surfaces. After 10 min of exposure, viable spores were found to be associated within the pipe biofilms. In the untreated pipe loop spore counts remained statistically consistent

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Wijman, Janneke G. E., Patrick P. L. A. de Leeuw, Roy Moezelaar, Marcel H. Zwietering, and Tjakko Abee. "Air-Liquid Interface Biofilms of Bacillus cereus: Formation, Sporulation, and Dispersion." Applied and Environmental Microbiology 73, no. 5 (2007): 1481–88. http://dx.doi.org/10.1128/aem.01781-06.

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ABSTRACT Biofilm formation by Bacillus cereus was assessed using 56 strains of B. cereus, including the two sequenced strains, ATCC 14579 and ATCC 10987. Biofilm production in microtiter plates was found to be strongly dependent on incubation time, temperature, and medium, as well as the strain used, with some strains showing biofilm formation within 24 h and subsequent dispersion within the next 24 h. A selection of strains was used for quantitative analysis of biofilm formation on stainless steel coupons. Thick biofilms of B. cereus developed at the air-liquid interface, while the amount of

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LINDSAY, D., V. S. BRÖZEL, and A. von HOLY. "Spore Formation in Bacillus subtilis Biofilms." Journal of Food Protection 68, no. 4 (2005): 860–65. http://dx.doi.org/10.4315/0362-028x-68.4.860.

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Spore formation by a Bacillus strain (Bacillus subtilis SpoIVFB-GFP) engineered with a green fluorescent protein (GFP) fused to a polytopic membrane protein (SpoIVF) that fluoresces during sporulation was observed. Biofilms of B. subtilis SpoIVFB-GFP containing ca. 8 log CFU/ml vegetative cells and spores below the lower detection limit (i.e., &lt;1 log CFU/ml) were allowed to develop on glass wool (37°C). These biofilms were subsequently exposed to nutrient limitation to stimulate spore formation, which was monitored for fluorescence by confocal scanning laser microscopy. Sporulation in c

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Hu, Wen Si, Dong U. Woo, Yang Jae Kang, and Ok Kyung Koo. "Biofilm and Spore Formation of Clostridium perfringens and Its Resistance to Disinfectant and Oxidative Stress." Antibiotics 10, no. 4 (2021): 396. http://dx.doi.org/10.3390/antibiotics10040396.

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Clostridium perfringens is a major human pathogen that causes gastroenteritis via enterotoxin production and has the ability to form spores and biofilms for environmental persistence and disease transmission. This study aimed to compare the disinfectant and environmental resistance properties of C. perfringens vegetative cells and spores in planktonic and sessile conditions, and to examine the nucleotide polymorphisms and transcription under sessile conditions in C. perfringens strains isolated from meat. The sporulation rate of sessile C. perfringens TYJAM-D-66 (cpe+) was approximately 19% at

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LINDSAY, D., V. S. BRÖZEL, and A. VON HOLY. "Biofilm-Spore Response in Bacillus cereus and Bacillus subtilis during Nutrient Limitation." Journal of Food Protection 69, no. 5 (2006): 1168–72. http://dx.doi.org/10.4315/0362-028x-69.5.1168.

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This study aimed to trace the dynamics of biofilm formation by vegetative cells and endospores of Bacillus cereus DL5 and Bacillus subtilis 168. Counts of B. cereus DL5 and B. subtilis 168 vegetative cells and spores either attached to glass wool or, correspondingly, planktonic cells were determined by standard plate-counting methods. Results from this study highlighted the biofilm-forming potential of both spores and vegetative cells of two different Bacillus species. It was shown that once Bacillus spores had attached to a surface, the spores germinated under favorable (B. cereus DL5) and ev

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Hupka, Megan, Raj Kedia, Rylee Schauer, et al. "Morphology of Penicillium rubens Biofilms Formed in Space." Life 13, no. 4 (2023): 1001. http://dx.doi.org/10.3390/life13041001.

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Fungi biofilms have been found growing on spacecraft surfaces such as windows, piping, cables, etc. The contamination of these surfaces with fungi, although undesirable, is highly difficult to avoid. While several biofilm forming species, including Penicillium rubens, have been identified in spacecraft, the effect of microgravity on fungal biofilm formation is unknown. This study sent seven material surfaces (Stainless Steel 316, Aluminum Alloy, Titanium Alloy, Carbon Fiber, Quartz, Silicone, and Nanograss) inoculated with spores of P. rubens to the International Space Station and allowed biof

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Gong, Jinglei, Die Hu, Jinzhi He, Ling Zou, Zhu Chen, and Mingyun Li. "Effect of LongZhang Gargle on Dual-Species Biofilm of Candida albicans and Streptococcus mutans." BioMed Research International 2021 (March 22, 2021): 1–10. http://dx.doi.org/10.1155/2021/6654793.

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Bioactive natural products have become a hot spot for oral disease treatments. At the present study, LongZhang Gargle was investigated for its effects on single-species biofilms of Candida albicans and dual-species biofilms of Candida albicans and Streptococcus mutans. Two different models of single and dual-species biofilms were grown in YNBB medium under appropriate conditions. Biofilm biomass, biofilm architecture, and cell activity in biofilms were assessed using Crystal Violet Staining, MTT, scanning electron microscopy (SEM), and confocal laser scanning microscopy (CLSM). Significant red

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Pizarro-Guajardo, Marjorie, Paulina Calderón-Romero, and Daniel Paredes-Sabja. "Ultrastructure Variability of the Exosporium Layer of Clostridium difficile Spores from Sporulating Cultures and Biofilms." Applied and Environmental Microbiology 82, no. 19 (2016): 5892–98. http://dx.doi.org/10.1128/aem.01463-16.

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ABSTRACTThe anaerobic sporeformerClostridium difficileis the leading cause of nosocomial antibiotic-associated diarrhea in developed and developing countries. The metabolically dormant spore form is considered the morphotype responsible for transmission, infection, and persistence, and the outermost exosporium layer is likely to play a major role in spore-host interactions during recurrent infections, contributing to the persistence of the spore in the host. A recent study (M. Pizarro-Guajardo, P. Calderón-Romero, P. Castro-Córdova, P. Mora-Uribe, and D. Paredes-Sabja, Appl Environ Microbiol 8

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ANJOS, MÁRCIA MARIA dos, SUELEN PEREIRA RUIZ, CELSO VATARU NAKAMURA, and BENÍCIO ALVES de ABREU FILHO. "Resistance of Alicyclobacillus acidoterrestris Spores and Biofilm to Industrial Sanitizers." Journal of Food Protection 76, no. 8 (2013): 1408–13. http://dx.doi.org/10.4315/0362-028x.jfp-13-020.

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This study evaluated the adhesion and biofilm formation of Alicyclobacillus acidoterrestris on industrial orange juice processing equipment and the bactericidal efficacy of peracetic acid, sodium hypochlorite, and quaternary ammonia after biofilm formation. The efficacy of these sanitizers against the spores of this microorganism was also evaluated. Stainless steel and nylon surfaces exhibited higher cell adhesion levels than did polyvinyl chloride surfaces. Peracetic acid was the most effective in removing biofilms from all surfaces (P &lt; 0.05) and also reduced bacterial counts by 3 log

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Gerwig, Jan, Taryn B. Kiley, Katrin Gunka, Nicola Stanley-Wall, and Jörg Stülke. "The protein tyrosine kinases EpsB and PtkA differentially affect biofilm formation in Bacillus subtilis." Microbiology 160, no. 4 (2014): 682–91. http://dx.doi.org/10.1099/mic.0.074971-0.

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The Gram-positive soil bacterium Bacillus subtilis is able to choose between motile and sessile lifestyles. The sessile way of life, also referred to as biofilm, depends on the formation of an extracellular polysaccharide matrix and some extracellular proteins. Moreover, a significant proportion of cells in a biofilm form spores. The first two genes of the 15-gene operon for extracellular polysaccharide synthesis, epsA and epsB, encode a putative transmembrane modulator protein and a putative protein tyrosine kinase, respectively, with similarity to the TkmA/PtkA modulator/kinase couple. Here

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Teses / dissertações sobre o assunto "Spores and Biofilms"

PORTINHA, Inês Cunha. "Exploring the evolutionary link between biofilms and spores formation in spore-formers." Master's thesis, Instituto de Higiene e Medicina Tropical, 2015. http://hdl.handle.net/10362/19323.

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Bacteria are often thought as single cell organisms, however they can develop into morphologically complex multicellular communities composed of different subpopulations of specialized cell types. Biofilm is an example, in which bacteria organize for protection from harmful conditions in the host and to create nutrient-rich areas. In the last years biofilm have been show to comprise an important aspect of microbial persistence in the human gut. Endospore-formers, although thought not to be major constituents of the microbiota in the human intestine, cause several intestinal diseases, usually a

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Iapichino, Martina. "Motilité individuelle et collective chez les systèmes microbiens : biofilms bactériens et dispersion de spores fongiques." Thesis, Université Côte d'Azur (ComUE), 2019. http://www.theses.fr/2019AZUR4051.

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Le but de cette thèse est de développer des expériences pour comprendre la physique de la motilité dans deux systèmes microbiens, vivant dans le domaine du faible nombre de Reynolds, c’est-à-dire lorsque les forces visqueuses l’emportent sur les forces d’inertie. La première partie de la thèse traite de la croissance de biofilms bactériens sur une surface solide. Les biofilms bactériens sont des communautés de cellules étroitement empilées dans une matrice polymère. Du point de vue physique, ces colonies se comportent comme des gels et la matrice polymérique crée des flux osmotiques qui permet

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Le, Toquin Esther. "Mode d'action biocide de nouveaux procédés de décontamination sur deux formes de résistances bactériennes." Thesis, Normandie, 2018. http://www.theses.fr/2018NORMR103/document.

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Il existe de nombreuses technologies de décontamination, néanmoins les spores et les biofilms bactériens demeurent une préoccupation majeure dans de nombreux domaines, tels que le secteur hospitalier, alimentaire et de la biodéfense car elles sont résistantes. Une mousse novatrice contenant un biocide (l’hypochlorite de sodium ou le peroxyde d’hydrogène) et un agent stabilisant (le Xanthane) a été étudiée pour répondre à ce besoin. Cette mousse a la capacité d’être mise en oeuvre de différentes façons sur le terrain par : pulvérisation au sol ; talochage et pulvérisation sur les murs ; remplis

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Al, Saabi Alexandre-Ahmad. "Mousses en écoulement pour le nettoyage d’équipements fermés contaminés par des spores de Bacillus cereus ou des biofilms de Pseudomonas fluorescens." Thesis, Lille 1, 2020. http://www.theses.fr/2020LIL1R015.

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Les contaminants tels que les spores / biofilms sont problématiques dans nombreux secteurs de l'industrie alimentaire. En effet, même après les procédures d'hygiène, ces biofilm/spores pouvaient être retrouvés sur toutes les surfaces en contact direct ou non direct avec les aliments (Bénézech & Faille, 2018). Les risques associés aux biofilms peuvent être contrôlés soit en limitant le nombre des cellules adhérentes, soit en facilitant l'élimination des bactéries adhérentes. Le nettoyage en place (CIP) est une pratique de nettoyage courante et est largement utilisée dans les industries alim

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Al, Saabi Alexandre-Ahmad. "Mousses en écoulement pour le nettoyage d’équipements fermés contaminés par des spores de Bacillus cereus ou des biofilms de Pseudomonas fluorescens." Electronic Thesis or Diss., Université de Lille (2018-2021), 2020. http://www.theses.fr/2020LILUR015.

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Dallagi, Heni. "Numerical and experimental investigations of the rheological behavior of foam flow : application to the cleaning of surfaces contaminated by microorganisms in the food industries." Electronic Thesis or Diss., Université de Lille (2022-....), 2022. http://www.theses.fr/2022ULILR003.

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La caractérisation expérimentale et numérique du comportement rhéologique d'une mousse aqueuse s'écoulant à l'intérieur d'un tuyau horizontal avec et sans singularités (demi-expansion soudaine, et chicane) a été étudiée. Différentes conditions d'écoulement ont été étudiées en faisant varier les qualités de mousse (55-85%), et trois nombres de Reynolds (32, 65, et 97). Les mesures de la pression, de la répartition de la vitesse locale et de la contrariante et de l'épaisseur des films liquides au niveau de la paroi à l'aide respectivement de capteurs de pression, de la PIV, de la polarographie e

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Ribeiro, Maria Cecília Enes. "Adesão e formação de biofilme por Bacillus cereus em aço inoxidável." [s.n.], 2015. http://repositorio.unicamp.br/jspui/handle/REPOSIP/255191.

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Orientador: Mirna Lucia Gigante<br>Tese (doutorado) - Universidade Estadual de Campinas, Faculdade de Engenharia de Alimentos<br>Made available in DSpace on 2018-08-30T23:01:21Z (GMT). No. of bitstreams: 1 Ribeiro_MariaCeciliaEnes_D.pdf: 17038739 bytes, checksum: 54c8350faac4b14e773283e6e871aa78 (MD5) Previous issue date: 2015<br>Resumo: O objetivo geral deste trabalho foi avaliar o efeito de diferentes matrizes na adesão e formação de biofilme em aço inoxidável por Bacillus cereus, bem como avaliar a eficiência dos procedimentos de higienização no controle de biofilmes de esporos desse micr

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Shane, William T. "Persistence of Spore Forming Bacteria on Drinking Water Biofilm and Evaluation of Decontamination Methods." University of Cincinnati / OhioLINK, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1205164893.

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Packard, Benjamin H. "Retention and Removal of Bacterial Endospores from Common Drinking Water Distribution System Pipe Materials." University of Cincinnati / OhioLINK, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1277132818.

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Gorinati, Camilla. "Caratterizzazione funzionale di sorgenti plasma di non equilibrio a pressione atmosferica per l’eradicazione di biofilm batterici e l’inattivazione di spore." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2020.

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Durante la mia attività di tesi mi sono focalizzata sulla caratterizzazione funzionale di una sorgente plasma surface Dielectric Barrier Discharge (sDBD) impiegata per l’inattivazione di spore batteriche di Geobacillus stearothermophilus, e per l’eradicazione di biofilm batterici di Staphylococcus aureus e Pseudomonas aeruginosa. Durante la prima attività è stata compiuta la caratterizzazione elettrica della sorgente sDBD e sono state condotte analisi di temperatura all’interno del volume di trattamento della sorgente. In seguito sono stati eseguiti test biologici per dimostrare l’efficacia d

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Capítulos de livros sobre o assunto "Spores and Biofilms"

Rönner, U., and U. Husmark. "Adhesion of Bacillus cereus Spores — A Hazard to the Dairy Industry." In Biofilms — Science and Technology. Springer Netherlands, 1992. http://dx.doi.org/10.1007/978-94-011-1824-8_34.

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Seale, Brent, Sara Burgess, Steve Flint, John Brooks, Phil Bremer, and Shanthi Parkar. "Thermophilic Spore-Forming Bacilli in the Dairy Industry." In Biofilms in the Dairy Industry. John Wiley & Sons, Ltd, 2015. http://dx.doi.org/10.1002/9781118876282.ch7.

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Kamala, Devi S., and Swapna Sreenivasagan. "Evaluation of Biofilm Adherence using Two Different Composite." In Advances in Sports Science and Technology. CRC Press, 2025. https://doi.org/10.1201/9781003616283-157.

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Gupta, Nidhi, Arfa Jabin, Akshay Bhargava, Divya, Natasha Gambhir, and Chetna Arora. "“Catalyzing Innovation: Antimicrobial Nanoparticles in Endodontics for Biofilm Disruption and Enhanced Treatment Strategies”." In Advances in Sports Science and Technology. CRC Press, 2025. https://doi.org/10.1201/9781003616283-140.

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de Siqueira, V. M., and N. Lima. "Efficacy of Free Chlorine Against Water Biofilms and Spores of Penicillium Brevicompactum." In Water Contamination Emergencies. The Royal Society of Chemistry, 2011. https://doi.org/10.1039/bk9781849731560-00157.

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C. Bhagwat, Amrita, Amrita M. Patil, and Sunil D. Saroj. "Natural Bio-actives Acting Against Clinically Important Bacterial Biofilms." In Therapeutic Implications of Natural Bioactive Compounds. BENTHAM SCIENCE PUBLISHERS, 2022. http://dx.doi.org/10.2174/9789815080025122030006.

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Biofilm research is growing rapidly due to the widespread existence of biofilms in pathogens and their resistance to a variety of antimicrobial therapies. World Health Organization in 2017 categorised pathogens into three categories based on their AMR [Antimicrobial resistance] and severity of infection viz. critical, high and medium. Acinetobacter baumannii, Pseudomonas aeruginosa and organisms belonging to Enterobacteriaceae family are top priority pathogens- ‘critical’, amongst which the majority of them are reported to cause the infection due to biofilm formation. As antibiotic resistance

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Shrirang Shinde, Sonam, Viraj Vivek Gaonkar, Humaira Mushtaq Mukadam, and Shikha Vikrant Gaikwad. "Bacillus subtilis: A Biological Marvel in the Domain of Agriculture and Environmental Science." In Bacillus subtilis - Functionalities and Emerging Applications [Working Title]. IntechOpen, 2025. https://doi.org/10.5772/intechopen.1007131.

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Bacillus subtills is a Gram-positive, rod-shaped, aerobic, non-pathogenic bacterium that synthesizes resilient endospores. Due to the capability of forming spores, the organism has ecological versatility that allows the organism to thrive in distinct environments such as soil, rhizospheric zones of plants, and even in the gastrointestinal tracts of animals. It is widely known as a plant growth-promoting rhizobacterium (PGPR) that enhances plants’ growth by producing various primary and secondary metabolites such as phytohormones, volatile organic compounds (VOC), enzymes (exo), biosurfactants,

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Lindsay, D. "Biofilm formation by spore-forming bacteria in food processing environments." In Biofilms in the Food and Beverage Industries. CRC Press, 2009. http://dx.doi.org/10.1201/9781439847480-c10.

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Lindsay, D., and S. Flint. "Biofilm formation by spore-forming bacteria in food processing environments." In Biofilms in the Food and Beverage Industries. Elsevier, 2009. http://dx.doi.org/10.1533/9781845697167.2.270.

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Trabalhos de conferências sobre o assunto "Spores and Biofilms"

Kramer, J. F. "Peracetic Acid: A New Biocide for Industrial Water Applications." In CORROSION 1997. NACE International, 1997. https://doi.org/10.5006/c1997-97404.

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Abstract Peracetic acid is rapidly cidal at low concentrations against a broad spectrum of microorganisms, including gram-positive and gram-negative bacteria, yeasts, molds, and algae under a wide variety of conditions. It is also effective against anaerobic and spore forming bacteria. Peracetic acid is effective at killing biofilm microorganisms at low concentrations and short contact times. Unlike a number of other biocides, the biocidal activity of peracetic acid is not affected by pH or water hardness and biocidal activity is retained even in the presence of organic matter. For these reaso

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Wolfram, J. H., R. E. Mizia, and W. J. Dirk. "Microbial Sampling of Aluminum-Clad Spent Nuclear Fuel." In CORROSION 1998. NACE International, 1998. https://doi.org/10.5006/c1998-98162.

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Abstract A microbial sampling program was initiated at the Idaho National Engineering and Environmental Laboratory (INEEL) to ascertain the effect of microbial activity on the corrosion of aluminum clad spent nuclear fuel (SNF) stored in wet and dry conditions. In the newest fuel storage pool at the INEEL (CPP-666), pitting corrosion has been observed on aluminum corrosion coupons that can not be explained by the excellent water chemistry. Pitting corrosion of the aluminum-clad SNF and corrosion coupons has been observed in the older fuel storage pool (CPP-603). Therefore a microbial assessmen

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Shmeleva, L. A. "The specificity of paleocoenosis and a trophic structure of the Upper Ordovician Bol’shaya Kos’yu reef (Northern Urals)." In All-Russia Lithological Meeting «Geology of reefs». Institute of Geology FRC Komi SC UB RAS, 2020. http://dx.doi.org/10.19110/98491-013-136-140.

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The study of the spatial-temporal and paleoecological structures of the paleocenoses of the Bolshaya Kosyu reef showed that the sphinctozoic sponges Amblysiphonelloides reticulata Rigby & Potter, 1986 and Corymbospongia sp. starting from the late Ordovician could settle in sublittoral environments with active hydrodynamics in close connection with cyanobacteria, which played a leading role in the functioning of the trophic structure of this ecosystem. Fossilized biofilms and glycocalyx, tubular and worm-like bacteriomorphs found on the surface of sponges are evidence of active participatio

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Başkan, Ceren, and Belgin Sırıken. "Role of Efflux Pump in Biofilm Formation of Multidrug-Resistant Pseudomonas aeruginosa." In 4th International Symposium on Innovative Approaches in Health and Sports Sciences. SETSCI, 2019. http://dx.doi.org/10.36287/setsci.4.9.081.

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AlSuwaidi, Saeed, and Ayman Al Ani. "Efficiency Enriched Seawater Intake Through Innovative Inspection and Cleaning Techniques." In ADIPEC. SPE, 2024. http://dx.doi.org/10.2118/223020-ms.

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Seawater is needed for chemistry, energy, and desalination. These devices collect massive amounts of seawater for desalination, cooling, and processing. These industries’ performance and cost-effectiveness depend on seawater intake system reliability. In hostile marine environments, seawater intake systems face biofouling, silt, and corrosion. Biofouling plagues seawater intake systems. Wet intake screens and lines support bacteria, plants, algae, and animals. BIOFouling jams screens and prevents water flow. It also causes corrosion and increases maintenance, reducing intake system performance

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Mena, Eva, Alicia Gadea, Alfonso Monreal-Bernal, Sergio López‐García, Victoriano Garre, and Andrés Jesús Lara-Guillén. "Biofungus: fungus MBBR pilot plant on Murcia Este WWTP." In 2nd WDSA/CCWI Joint Conference. Editorial Universitat Politècnica de València, 2022. http://dx.doi.org/10.4995/wdsa-ccwi2022.2022.14875.

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Concerns about energy efficiency and contaminants of emerging concern (CECs) in wastewater treatment plants (WWTP) lead development of new and alternative processes. Conventional activated sludge systems have a high energy consumption and footprint. Alternative processes are nowadays implemented to reduce them. In this study, we present the results of Biofungus project. Influent wastewater is treated under real conditions and continuous operation in a two-step Moving Bed Biofilm Reactor (MBBR) pilot plant based on Mucor fungus. Several strains and spontaneous mutants of the Mucor fungus were i

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