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Browsing by Issue Date, starting with "2019-07-21"

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  • Adolescents and harmful consumptions: what do they know? A scoping review
    Publication . Correia, C.; Fernandes, F.; Correia, M.; Dias, H.; Amendoeira, J.; Silva, M.
    Introduction Adolescence is highly marked by the experiencing of numerous conducts of experimentation, being the most common the use of legal or illegal substances that most of the times translates to an unweight decision-making, mostly due to peer pressure or for recreative purposes. Objectives To understand the dynamic between adolescents’ harmful consumptions and their sexuality experience. Methods It was developed a scoping review from the following review question: ‘‘do adolescents’ harmful consumptions influence their experience of sexuality?’’ using Joanna Briggs Institute’s Protocol. Alcohol drinking, health literacy, tobacco use, selfinjurious behaviour and sexuality were defined as mesh descriptors, which lead to the following search expression (health literacy OR alcohol drinking AND tobacco use OR selfinjurious behaviour AND sexuality). There were used two data bases, PubMed and ProQuest, and established a few research limiters, such as free full text, a time period since 21/03/2014 up until 21/03/2019 and adolescent (13 to 18) in both data bases. Results Most adolescents consume alcohol, tobacco and drugs in schools by the age of 14/15. The first contact with these substances occurs through their friends. This can be translated not only by the lack of information of adolescents, but also by not knowing where to find it, which suggests a lack of health literacy in this subject and possible influence in decision making, especially in the experience of sexuality. Conclusions The early experience of harmful consumption in adolescence causes problems that can affect health in general and in particular, the expression of sexuality through the adoption of unsafe behaviours. Nurses need to be attentive to the needs of young people to intervene according to their needs, increasing their health literacy.
    2019-07-21Journal article Restricted access Show more
  • Activity of nitrifying bacteria in aerobic granular sludge treating food industry wastewater
    Publication . Paulo, Ana M. S.; Amorim, Catarina L.; Castro, Paula M. L.
    Aerobic Granular Sludge (AGS) is an innovative wastewater biological treatment, which uses less energy and space compared to other technological solutions. AGS presents a diverse microbial community responsible for the simultaneous removal of carbon and nutrients. These communities are protected by extracellular polymeric substances (EPS), which provide a compact structure to the granules. As a result, bacteria present in the aerobic granules are more resistant to variable wastewater composition, as commonly produced in food industry. In this study, carbon and NH4+ removal from a fish canning plant wastewater was evaluated using an AGS-SBR (sequential batch reactor), operated during 90 days. Chemical oxygen demand (COD) at the outlet was below the discharge limit of 125 mg O2 L-1 throughout the operation. Nitrification occurred during the first 23 days of operation. Between days 24 and 60, nitrification was completely inhibited, without ammonium removal from the wastewater. Nitrifying bacteria recovered their activity right after a decrease in the wastewater organic load, showing that the inhibition of the nitrification process was reversible. This study will contribute to our knowledge on the application of the AGS process to food industry wastewater treatment.
    2019-07-21Conference object Open access Show more