Pós-tratamento físico-químico por flotação fad em efluentes de laticínios

A agroindústria de laticínios constitui um setor com uma geração de efluente de alto potencial poluidor, que sem o tratamento adequado acaba se tornando um problema ambiental. Buscando solucionar os efeitos do tratamento inadequado destes efluentes, complementar ao tratamento convencional, em alguns casos é realizada a aplicação de um pós-tratamento visando uma melhor qualidade do efluente final. Uma das formas utilizadas é a flotação precedida de coagulação/floculação, que através de agentes coagulantes e floculantes permitem à aglomeração de partículas possibilitando a flotação. Essas substâncias utilizadas são produtos químicos normalmente à base de alumínio ou ferro, acarretando na geração de lodos com altas concentrações de íons metálicos, dificultando e encarecendo a destinação do lodo. Tendo em vista os problemas citados, vêm sendo estudados e utilizados coagulantes e floculantes com base orgânica, uma vez que estes geram lodos biodegradáveis. Assim, este trabalho teve por objetivo comparar a eficiência entre dois coagulantes, sendo um inorgânico (Klaraid IC 1176L) e o outro orgânico (Novfloc 1540), associados ao processo de flotação e sedimentação em escala de bancada, no tratamento de efluente de uma agroindústria de laticínio. Para a realização deste trabalho, foi aplicada a metodologia de planejamento experimental e otimização de processos, utilizando como variáveis independentes a concentração de coagulantes e floculantes, tendo como variável resposta à remoção de turbidez. Como primeiro passo foi feito o planejamento inicial fatorial 22 de sedimentação e flotação visando ajustar as faixas de aplicação, seguindo para um delineamento composto central rotacional visando à otimização dos processos da sedimentação e flotação. Com a utilização do coagulante de base inorgânica (Klaraid) seguido pelo floculante, obteve-se uma remoção de turbidez de até 78,93% para o processo de sedimentação, já para o processo de flotação os melhores resultados apontaram uma remoção de turbidez de 74,92%. Com o uso do coagulante de base orgânica (Novfloc) combinado ao uso do floculante, a eficiência de remoção de turbidez para sedimentação chegou até 78,09%, já na flotação o resultado foi até 72,11% de remoção

Comparação entre a imuno-separação magnética, acoplada à imunofluorescência, e as técnicas de Faust et al. e de Lutz para o diagnóstico de cistos de Giardia lamblia em fezes humanas

No presente trabalho, o desempenho da técnica de Imunoseparação Magnética, acoplada à Imunofluorescência (IMS-IFA), foi comparado com aqueles das técnicas parasitológicas de FAUST et al. e de Lutz na detecção de cistos de Giardia lamblia em fezes humanas. Foram processadas 127 amostras de fezes pelas três técnicas paralelamente e a detecção de cistos foi de 27,5% para IMS-IFA e de 15,7% para as técnicas de FAUST et al. e de Lutz concomitantemente. A análise dos resultados mostrou maior sensibilidade da IMS-IFA na detecção de cistos de G. lamblia quando comparada aos métodos de FAUST et al. e Lutz. A utilização desta metodologia como procedimento de rotina proporciona o processamento de várias amostras simultaneamente, além de aumentar a recuperação de cistos de G. lamblia e reduzir o tempo de estocagem das amostras.In the present study, the performance of Immunomagnetic Separation technique, coupled with Immunofluorescence (IMS-IFA), was compared with the FAUST et al. and Lutz parasitological techniques for the detection of Giardia lamblia cysts in human feces. One hundred and twenty-seven samples were evaluated by the three techniques at the same time showing a rate of cyst detection of 27.5% by IMS-IFA and 15.7% by both Faust et al. and Lutz techniques. Data analysis showed a higher sensitivity of IMS-IFA for the detection of G. lamblia cysts in comparison with the techniques of FAUST et al. and Lutz. The use of this methodology as a routine procedure enables the processing of many samples simultaneously, in order to increase recovery rate of G. lamblia cysts and reduce the time of sample storage

A Global Strategy for Ecologically Sustainable Transport and other Linear Infrastructure

The current Global Strategy for Ecologically Sustainable Transport and other Linear Infrastructure primarily sets up the objectives and principles for governments and organizations for mainstreaming biodiversity and ecological connectivity on transport infrastructure development. Additionally, it addresses the overall framework of stakeholders who must be engaged as key players in: • launching proactive policies, • establishing appropriate legal frameworks, • supporting better planning, • promoting multi-sector cooperation, and • encouraging innovative science-based solutions. We consider this as a living document as future versions may integrate additional elements with regards to governance, policy, and financing, in the attempt to develop a common comprehensive language and grounds for cooperation. This “Global Strategy” has been developed by an international working group coordinated by IENE and supported by an international coalition formed from the international conferences on transport and ecology and conservation organisations as IENE, ICOET, ANET, ACLIE, WWF and IUCN. The working group is drawn from global experts in transport and ecology and aims to work towards finding a ‘win-win’ solution for securing mainstreaming biodiversity and ecological connectivity and avoiding, mitigating, or compensating ecosystems’ fragmentation during transport infrastructure development or adaptation. This Strategy builds upon five years of development of the guidelines “International Guidance for Ecologically - Friendly Linear Infrastructure (IGELI)” initiated at the ICOET 2015 conference in North Carolina, USA. IGELI was an international debate with experts from all over the world continued during workshops held at the international conferences of IENE (Lyon, France, 2016 and Eindhoven, Holland, 2018), ICOET (Salt Lake City, USA, 2017 and Sacramento, USA, 2019), IUCN (Hawaii, USA, 2016) and ACLIE (Kruger National Park, South Africa, 2019). Summarising the Decision 14/3 on mainstreaming of biodiversity in the energy and mining, infrastructure, manufacturing, and processing sectors (CBD/ COP/DEC/14/3/30 November 2018) of 14th COP CBD (Sharm El Sheikh, Egypt, Nov 2018) (Convention on Biological Diversity 2018), the international coalition of the working group, initiated to promote the Strategy at the CBD COP 15 in China. We hope, this Strategy provides a useful tool and roadmap for promoting the urgent need of supporting biodiversity conservation and securing ecological connectivity at all scales of governance, policies, planning and implementation of transport projects internationally. The creation of an International Observatory for monitoring the fragmentation status globally as an important threat for biodiversity loss is proposed as a common ambition of the working group members and their organizations.IENE, ICOET, ANET, ACLIE, WWF, IUCN, WWF, WCPA, Connectivity Conservation Specialist Grou

National identity predicts public health support during a global pandemic

Changing collective behaviour and supporting non-pharmaceutical interventions is an important component in mitigating virus transmission during a pandemic. In a large international collaboration (Study 1, N = 49,968 across 67 countries), we investigated self-reported factors associated with public health behaviours (e.g., spatial distancing and stricter hygiene) and endorsed public policy interventions (e.g., closing bars and restaurants) during the early stage of the COVID-19 pandemic (April-May 2020). Respondents who reported identifying more strongly with their nation consistently reported greater engagement in public health behaviours and support for public health policies. Results were similar for representative and non-representative national samples. Study 2 (N = 42 countries) conceptually replicated the central finding using aggregate indices of national identity (obtained using the World Values Survey) and a measure of actual behaviour change during the pandemic (obtained from Google mobility reports). Higher levels of national identification prior to the pandemic predicted lower mobility during the early stage of the pandemic (r = −0.40). We discuss the potential implications of links between national identity, leadership, and public health for managing COVID-19 and future pandemics.publishedVersio

Predicting attitudinal and behavioral responses to COVID-19 pandemic using machine learning

At the beginning of 2020, COVID-19 became a global problem. Despite all the efforts to emphasize the relevance of preventive measures, not everyone adhered to them. Thus, learning more about the characteristics determining attitudinal and behavioral responses to the pandemic is crucial to improving future interventions. In this study, we applied machine learning on the multinational data collected by the International Collaboration on the Social and Moral Psychology of COVID-19 (N = 51,404) to test the predictive efficacy of constructs from social, moral, cognitive, and personality psychology, as well as socio-demographic factors, in the attitudinal and behavioral responses to the pandemic. The results point to several valuable insights. Internalized moral identity provided the most consistent predictive contribution—individuals perceiving moral traits as central to their self-concept reported higher adherence to preventive measures. Similar results were found for morality as cooperation, symbolized moral identity, self-control, open-mindedness, and collective narcissism, while the inverse relationship was evident for the endorsement of conspiracy theories. However, we also found a non-neglible variability in the explained variance and predictive contributions with respect to macro-level factors such as the pandemic stage or cultural region. Overall, the results underscore the importance of morality-related and contextual factors in understanding adherence to public health recommendations during the pandemic.Peer reviewe

National identity predicts public health support during a global pandemic (vol 13, 517, 2022) : National identity predicts public health support during a global pandemic (Nature Communications, (2022), 13, 1, (517), 10.1038/s41467-021-27668-9)

Publisher Copyright: © The Author(s) 2022.In this article the author name ‘Agustin Ibanez’ was incorrectly written as ‘Augustin Ibanez’. The original article has been corrected.Peer reviewe

National identity predicts public health support during a global pandemic.

Changing collective behaviour and supporting non-pharmaceutical interventions is an important component in mitigating virus transmission during a pandemic. In a large international collaboration (Study 1, N = 49,968 across 67 countries), we investigated self-reported factors associated with public health behaviours (e.g., spatial distancing and stricter hygiene) and endorsed public policy interventions (e.g., closing bars and restaurants) during the early stage of the COVID-19 pandemic (April-May 2020). Respondents who reported identifying more strongly with their nation consistently reported greater engagement in public health behaviours and support for public health policies. Results were similar for representative and non-representative national samples. Study 2 (N = 42 countries) conceptually replicated the central finding using aggregate indices of national identity (obtained using the World Values Survey) and a measure of actual behaviour change during the pandemic (obtained from Google mobility reports). Higher levels of national identification prior to the pandemic predicted lower mobility during the early stage of the pandemic (r = -0.40). We discuss the potential implications of links between national identity, leadership, and public health for managing COVID-19 and future pandemics