Computational fluids dynamics (CFD) in the spatial distribution of air velocity in prototype designed for animal experimentation in controlled environments

ArticleMaintaining a comfortable and productive thermal environment is one of the major challenges of poultry farming in tropical and hot climates. The thermal environment encompasses a number of factors that interact with each other and reflect the actual thermal sensation of the animals. These factors characterize the microclimate inside the facilities and influence the behaviour, performance and well-being of the birds. Thus, the objective of this study is to propose and validate a computational model of fluid dynamics to evaluate the spatial distribution of air velocity and the performance of a system designed to control air velocity variation for use in experiments with birds in controlled environment. The performance of the experimental ventilation prototype was evaluated based on air velocity distribution profiles in cages. Each prototype consisted of two fans coupled to a PVC pipe 25 cm in diameter, one at each end of the pipe, with airflow directed along the entire feeder installed in front of the cages. The contour conditions considered for the simulation of airflow inside the cage were air temperature of 35 °C at the entrance and exit of the cage; air velocity equal to 2.3 m s -1 at the entrance of the cage; pressure of 0 Pa. The model proposed in this study was representative when compared to the experimental measurements, and it can be used in the study of air flow behaviour and distribution for the improvement of the prototype design for later studies

Perfil dos Usuários de Medicamentos das Unidades Básicas de Saúde de Ceres-GO.

Foram aplicados 321 questionários aos usuários de medicamentos nas seis unidades básicas de saúde da cidade de Ceres – GO.  Os dados foram analisados estatisticamente pelo software EPI INFO 3.5.2 e Microsoft Office Excel® 2007. O perfil dos entrevistados demonstra que a população estudada é carente de informações quanto ao uso correto de medicamentos, sendo a ausência do farmacêutico uma das principais causas deste problema. Portanto esta pesquisa fornece subsídios importantes para o estabelecimento de estratégias específicas e políticas públicas como a Política Nacional de Medicamentos e a Política Nacional de Assistência Farmacêutica, visando à melhoria da saúde da população. Abstract 321 questionnaires were applied to drug users in the six basic health units in the city of Ceres - GO. Data were statistically analyzed by using EPI INFO 3.5.2 and Microsoft Office Excel ® 2007. The profile of respondents shows that the population is deprived of information concerning the correct use of medicines, and the absence of the pharmacist a major cause of this problem. Therefore this research provides important support for the establishment of specific strategies and policies such as the National Drug Policy and the National Policy for Pharmaceutical Care, aiming to improve the population's health

System complexity and policy integration challenges: The Brazilian Energy- Water-Food Nexus

The Energy-Water-Food Nexus is one of the most complex sustainability challenges faced by the world. This is particularly true in Brazil, where insufficiently understood interactions within the Nexus are contributing to large-scale deforestation and land-use change, water and energy scarcity, and increased vulnerability to climate change. The reason is a combination of global environmental change and global economic change, putting unprecedented pressures on the Brazilian environment and ecosystems. In this paper, we identify and discuss the main Nexus challenges faced by Brazil across sectors (e.g. energy, agriculture, water) and scales (e.g. federal, state, municipal). We use four case studies to explore all nodes of the Nexus. For each, we analyse data from economic and biophysical modelling sources in combination with an overview of the legislative and policy landscape, in order to identify governance shortcomings in the context of growing challenges. We analyse the complex interdependence of developments at the global and local (Brazilian) levels, highlighting the impact of global environmental and economic change on Brazil and, conversely, that of developments in Brazil for other countries and the world. We conclude that there is a need to adjust the scientific approach to these challenges as an enabling condition for stronger science-policy bridges for sustainability policy-making. © 2019 The Author(s