Microbiologic assessment of indoor air quality in hospitals (2009)
Graça, Joana, Pinto, Claúdia, Lopes, Ariana, Gonçalves, Sérgio, Santos, Isabel, Nicolau, Ana, ...
Moura, Claúdia, Neto, Marta Martins, Santos, Liliana, Mina, Isabel Aguiar Pinto, Lima, Nelson, Mota, M., ...
Fundação para a Ciência e a Tecnologia (FCT) - projecto PTDC/AMB/68393/2006
Santos, Sílvio B, Carvalho, Carla M, Sillankorva, Sanna, Nicolau, Ana, Ferreira, Eugénio C, Azeredo, Joana
Abstract Background The Double-Layer Agar (DLA) technique is extensively used in phage research to enumerate and identify phages and to isolate mutants and new phages. Many phages form large and...
Santos, Sílvio, Carvalho, Carla M., Sillankorva, Sanna, Nicolau, Ana, Ferreira, E. C., Azeredo, Joana
Background The Double-Layer Agar (DLA) technique is extensively used in phage research to enumerate and identify phages and to isolate mutants and new phages. Many phages form large and well-defined...
Antibiotherapy and pathogenesis of uncomplicated UTI : difficult relationships (2009)
Moura, A., Nicolau, Ana, Hooton, T., Azeredo, Joana
In a time when conventional antibiotics are becoming increasingly less effective for treatment of infections, the relationship between bacteria and antimicrobial resistance is becoming more and more...
Oliveira, A., Sereno, R., Nicolau, Ana, Azeredo, Joana
Escherichia coli can cause severe respiratory and systemic infections in chickens, and it is often associated with significant economic losses in the poultry industry. Bacteriophages (phages) have...
Impact of biofilm growth in the microbial community composition of a sequencing batch reactor (2008)
Matos, Maria F., Nicolau, Ana, Brito, A. G., Nogueira, R.
Conventional activated sludge wastewater treatment plants (WWTP) for carbon and nutrient removal operate at high sludge retention time and, consequently, at a low food to microorganisms ratio. While...
Production of a salmonella bacteriophage in a non-pathogenic E. coli strain (2008)
Santos, Sílvio R. B., Fernandes, E., Krylov, V. N., Pleteneva, E. A., Shaburova, O. V., Nicolau, Ana, ...
In vitro and in vivo evaluation of campylobacter bacteriophages (2008)
Carvalho, Carla A. O. C. M., Gannon, B. W., Halfhide, D. E., Nicolau, Ana, Azeredo, Joana
Stalked protozoa identification by image analysis and multivariable statistical techniques (2008)
Amaral, A. L., Ginoris, Y. P., Nicolau, Ana, Coelho, M. A. Z., Ferreira, E. C.
Protozoa are considered good indicators of the treatment quality in activated sludge systems as they are sensitive to physical, chemical and operational processes. Therefore, it is possible to...
Viability and preservation of the lytic spectra of Salmonella bacteriophages during storage (2007)
Fernandes, E., Amorim, L., Nicolau, Ana, Silva, Joana Laranjeira, Azeredo, Joana, Teixeira, P.
Nicolau, Ana, Santos, Sílvio R. B., Carvalho, Carla A. O. C. M., Ferreira, E. C., Azeredo, Joana
Stalked protozoa identification by image analysis and multivariable statistical techniques (2007)
Amaral, A. L., Ginoris, Y. P., Nicolau, Ana, Coelho, M. A. Z., Ferreira, E. C.
Protozoa are considered good indicators of the treatment quality in activated sludge systems as they are sensitive to physical, chemical and operational processes. Therefore, it is possible to...
Bacteriophage therapy in salmonella infected broiler chickens (2007)
Gannon, B. W., Halfhide, D. E., Zammerini, D., Hayes, C. M., Krylov, V. N., Nicolau, Ana, ...
Ginoris, Y. P., Amaral, A. L., Nicolau, Ana, Coelho, M. A. Z., Ferreira, E. C.
Protozoa and metazoa are considered good indicators of the treatment quality in activated sludge systems due to the fact that these organisms are fairly sensitive to physical, chemical and...
Ginoris, Y. P., Amaral, A. L., Nicolau, Ana, Coelho, M. A. Z., Ferreira, E. C.
A procedure for the semi-automatic identification of the main protozoa and metazoa species present in the activated sludge of wastewater treatment plants was developed. This procedure was based on...
Microfauna as indicator of copper, zinc, and cycloheximide in activated sludge processes (2007)
Nicolau, Ana, Mota, M., Lima, Nelson
Microfauna, comprising protists and little metazoan, has proved to be a useful tool for assessing the occurrence of pollution in wastewater treatment systems, namely on activated-sludge plants. In...
Ginoris, Y. P., Amaral, A. L., Nicolau, Ana, Coelho, M. A. Z., Ferreira, E. C.
Different protozoa and metazoa populations develop in the activated sludge wastewater treatment processes and are highly dependent on the operating conditions. In the current work the protozoa and...
Bacteriophage therapy in Campylobacter-infected broiler chickens (2007)
Carvalho, Carla A. O. C. M., Gannon, B. W., Halfhide, D. E., Nicolau, Ana, Azeredo, Joana
A mathematical model for a Salmonella bacteriophage (2007)
Santos, Sílvio R. B., Azeredo, Joana, Nicolau, Ana, Ferreira, E. C.
Ginoris, Y. P., Amaral, A. L., Ferreira, E. C., Coelho, M. A. Z., Nicolau, Ana
Os protozoários e pequenos metazoários são organismos abundantes nos tanques de aeração das Estações de Tratamento de Efluentes (ETEs) por lodos ativados. A distribuição de espécies e sua...
Modelling bacteria and bacteriophage population dynamics (2006)
Santos, Sílvio R. B., Azeredo, Joana, Nicolau, Ana, Ferreira, E. C.
Moreover, it is necessary to evaluate and to understand the phage and bacteria population dynamics in order to foresee its potential for use in vivo. To understand how natural communities are...
Isolation and selection of campylobacter bacteriophages from poultry carcasses (2006)
Carvalho, Carla A. O. C. M., Susano, M., Nicolau, Ana, Azeredo, Joana
Fundação para a Ciência e a Tecnologia (FCT)
Ginoris, Y. P., Amaral, A. L., Nicolau, Ana, Ferreira, E. C., Coelho, M. A. Z.
A mixed culture of microorganisms is usually present in biological wastewater treatment processes such as the activated sludge system in aeration tanks. These microorganisms are capable of reducing...
Effect of copper in the protistan community of activated sludge (2005)
Nicolau, Ana, Martins, Maria João, Mota, M., Lima, Nelson
Protists have proved to be an interesting tool for assessing the occurrence of pollution in wastewater treatment systems along with its role in the control of pollution itself through grazing of...
Estudo da citotoxicidade in vitro de corantes azo em Tetrahymena pyriformis (2004)
Fonseca, Helena, Dias, Nicolina, Nicolau, Ana, Lima, Nelson
O aumento da poluição ambiental e o contínuo desenvolvimento da síntese de novos químicos desencadeou uma crescente preocupação acerca dos possíveis efeitos desses componentes directa ou...
Nicolau, Ana, Mota, M., Lima, Nelson
The sensitivity of protozoa, and particularly ciliated protozoa, to environmental changes suggested a study on the physiological responses arising from exposure to toxic compounds. Tetrahymena...
Importância da identificação das espécies responsáveis pelo crescimento filamentoso nas ETARs (2002)
Nicolau, Ana, Martins, Maria João, Mota, M., Lima, Nelson
Para se ultrapassarem as situações de crescimento filamentoso exagerado, é necessário, antes de mais, identificar correctamente a espécie ou espécies responsáveis por esse crescimento. Após a...
Trends in the use of protozoa in the assessment of wastewater treatment (2001)
Nicolau, Ana, Dias, Nicolina, Mota, M., Lima, Nelson
Increasing environmental pollution and the continuous development of new chemicals and drugs has led to ever growing concern about the potential effects of these compounds directly or indirectly on...
Semi-automated recognition of protozoa by image analysis (1999)
Amaral, A. L., Baptiste, C., Pons, M. N., Nicolau, Ana, Lima, Nelson, Ferreira, E. C., ...
A programme was created to semi-automatically analyse protozoal digitised images. Principal Component Analysis technique was used for species identification. After data collection and mathematical...
Dias, Nicolina, Nicolau, Ana, Carvalho, Graça Simões De, Mota, M., Lima, Nelson
This paper describes a critical evaluation of a miniaturised colorimetric assay, using MTT (3-[4,5- dimethyl-thiazol-2-yl]-2,5-diphenyl-tetrazolium bromide) reduction, applied to protozoan viability...
Nicolau, Ana, Mota, M., Lima, Nelson
Protozoa, and particularly ciliates, are essential in aerobic purification processes of wastewaters and have proved to be very sensitive to environmental changes. The physiological response of the...
Nicolau, Ana, Martins, Maria João, Mota, M., Lima, Nelson
A importância e o papel dos protozoários nos processos de tratamento aeróbio de águas residuais são bem conhecidos, e constituem um valioso instrumento da avaliação do funcionamento das ETAR,...
Os protozoários como ferramenta da monitorização biotecnológica da poluição: ensaios in vitro (1999)
Nicolau, Ana, Dias, Nicolina, Carvalho, Graça Simões De, Mota, M., Lima, Nelson
Os protozoários, e particularmente os ciliados, são essenciais nos processos de depuração biológica e aeróbica das águas residuais e constituem, por outro lado, um grupo de organismos muito...
Automated characterization of protozoa in activated sludge (1998)
Baptiste, C., Amaral, A. L., Nicolau, Ana, Pons, M. N., Lima, Nelson, Ferreira, E. C., ...
The use of immunocytochemical methods for toxicity assessment in Tetrahymena pyriformis (1998)
Dias, Nicolina, Nicolau, Ana, Lima, Nelson, Carvalho, Graça Simões De, Mota, M.
Fundação para a Ciência e a Tecnologia (FCT) - Praxis XXI BD/5080/95, PRAXIS XXI.2/2.1/BIO/1118/95.
Physiological responses of the ciliated protozoa tetrahymena pyriformis to toxic compounds (1998)
Nicolau, Ana, Dias, Nicolina, Lima, Nelson, Carvalho, Graça Simões De, Mota, M.
PRAXIS XXI.
Amaral, A. L., Nicolau, Ana, Ferreira, E. C., Lima, Nelson, Mota, M.
PRAXIS XXI.