9 documents found, page 1 of 1
Access to information, concerns, myths and truths on food safety during COVID-1...
Lemos, M.; Maia, R.; Teixeira, P.Purpose: The COVID-19 pandemic raised questions and concerns about the possibility of transmission of SARS-CoV-2 via foods. While cases of COVID were rapidly rising, information related to the virus and ways of prevention was also increasing, with much of this information being provided by the media and the general population. In this context, this study had two main objectives: 1) To understand the doubts and ...
Reflections on the conservation challenges of scientific and technological objects
Lemos, M.; Tissot, I.The conservation of science and technology (S&T) heritage encompasses complex challenges. Among the reasons for this complexity are the S&T objects specific characteristics: the wide variety of materials, construction techniques and dimensions, and the existence of operating mechanisms. Present conservation methods are not fully adapted to the specificity of this heritage, requiring more research on S&T conserv...
Validation of a LLME/GC-MS methodology for quantification of volatile compounds...
Coelho, Eduardo João Louro; Lemos, M.; Genisheva, Zlatina; Domingues, Lucília; Vilanova, Mar; Oliveira, J. M.Knowledge of composition of beverages volatile fraction is essential for understanding their sensory attributes. Analysis of volatile compounds predominantly resorts to gas chromatography coupled with mass spectrometry (GCMS). Often a previous concentration step is required to quantify compounds found at low concentrations. This work presents a liquidliquid microextraction method combined with GCMS (LLME/GCMS) ...
The action of chemical and mechanical stresses on single and dual species biofi...
Gomes, I. B.; Lemos, M.; Mathieu, L.; Simões, M.; Simões, Lúcia C.The presence of biofilms in drinking water distribution systems (DWDS) is a global public health concern as they can harbor pathogenic microorganisms. Sodium hypochlorite (NaOCl) is the most commonly used disinfectant for microbial growth control in DWDS. However, its effect on biofilm removal is still unclear. This work aims to evaluate the effects of the combination of chemical (NaOCl) and mechanical stresses...
A internet e as redes sociais online nas eleições presidenciais portuguesas de ...
Lemos, M.; Alturas, B.A contínua expansão das Tecnologias de Informação, nomeadamente as relacionadas com a comunicação e a difusão dos computadores pessoais, tablets e smartphones ligados à Internet têm vindo a possibilitar uma profunda reformulação dos sistemas de divulgação de informação. Atualmente os políticos utilizam cada vez mais a Internet e as Redes Sociais Online cada vez mais como ferramentas de marketing político para i...
Effect of sodium hypochlorite on bacteria isolated from drinking water
Gomes, Inês B.; Lemos, M.; Malheiro, J.; Simões, Lúcia C.; Simões, M.Biofilm formation inside drinking water distribution systems (DWDS) constitutes one of the major microbial problems in the distribution of safe water. Biofilms in DWDS can act as a reservoir of pathogenic microorganisms and consequently constitute a threat to public health. Therefore, the control of biofilm development inside the pipes of DWDS is a concern for drinking water companies being the use of chlorine ...
Ageing profiling of craft beers: a sensorial and chemical overview
Lemos, M.; Coelho, Eduardo João Louro; Macieira, F.; Pereira, F. B.; Oliveira, J. M.; Domingues, LucíliaOne of the main differences between craft and commercial beers is the presence of active yeast in the bottle, which can have high impact on beer stability during shelflife. For this reason, sensory and chemical beer profiling during storage is of upmost importance when focusing quality control. This study investigated the changes that occur during the storage/ageing of four different craft beers and two commerc...
Feline Calicivirus: unveiling data on viral inactivation
Lemos, M.; Nóbrega, C.; Vala, Helena; Mesquita, J. R.Feline Calicivirus (FCV) is an important and widespread virus of the feline population. As a member of the Caliciviridae family, FCV mutates readily in nature, and this has resulted in the recent emergence of a highly virulent haemorrhagic systemic strain. Despite the increased concern about this feline pathogen, little is still known on potential FCV virucidal compounds. On the other hand several experiments o...
Neoplasias Mamárias em Felídeos
Lemos, M.; Cruz, R.; Santos, C.; Esteves, F.; Vala, HelenaThe neoplasms in small animals have great relevance in the clinic of pets, not only for its increasing incidence, but also because of its gravity. This study includes a review of the subject, combined with a case study of mammary tumours in felines, from the Pathology Laboratory of Agrarian School of Viseu samples. The mammary neoplasias have higher incidence in not spayed geriatric females, being rare in anima...