A Dataset of Fact-Checked Images Shared on WhatsApp During the Brazilian and Indian Elections

Recently, messaging applications, such as WhatsApp, have been reportedly abused by misinformation campaigns, especially in Brazil and India. A notable form of abuse in WhatsApp relies on several manipulated images and memes containing all kinds of fake stories. In this work, we performed an extensive data collection from a large set of WhatsApp publicly accessible groups and fact-checking agency websites. This paper opens a novel dataset to the research community containing fact-checked fake images shared through WhatsApp for two distinct scenarios known for the spread of fake news on the platform: the 2018 Brazilian elections and the 2019 Indian elections.Comment: 7 pages. This is a preprint version of an accepted paper on ICWSM'20. Please, consider to cite the conference version instead of this on

Experimental Observation of Environment-induced Sudden Death of Entanglement

We demonstrate the difference between local, single-particle dynamics and global dynamics of entangled quantum systems coupled to independent environments. Using an all-optical experimental setup, we show that, while the environment-induced decay of each system is asymptotic, quantum entanglement may suddenly disappear. This "sudden death" constitutes yet another distinct and counter-intuitive trait of entanglement.Comment: 4 pages, 4 figure

A diagnosis of the microbiological quality of dehydrated bee-pollen produced in Brazil

Bee-pollen is an apicultural product with potential for medical and nutritional applications; therefore, its microbiology quality should be monitored. In this context, the objective of this study was to diagnose the microbiological quality of 45 dehydrated bee-pollen samples collected from November 2011 to December 2013 in nine Brazilian States. All the samples were negative for sulphite-reducing Clostridium spores, Salmonella, coagulase-positive Staphylococcus and Escherichia coli, which are micro-organisms of public health concern. Total aerobic mesophilic micro-organism counts ranged from < 10 to 1·10 × 10 4 CFU g -1 , with psychrotroph counts ranging from < 10 to 1·12 × 10 3 CFU g -1 and total coliforms from < 10 to 2·80 × 10 3 CFU g -1 , while the values for yeasts and moulds were between < 10 to 7·67 × 10 3 CFU g -1 . According to the literature, the microbiota observed in this study were typical; however, it is important to consider that these micro-organisms may cause spoilage and diminish shelf life, reason by which quality control programs should be implemented. Significance and Impact of the Study: Contamination of bee-pollen can occur during production, collection and processing, but there are few studies of the microbiological quality of this product. Brazil is an important producer of dehydrated bee-pollen, therefore, a diagnosis of the microbiological status is important to ensure the safety of many consumers. Salmonella sp., genus Clostridium, coagulase-positive Staphylococcus, Escherichia coli and even some yeast species are micro-organisms of public health concern and their presence must be monitored. Furthermore, the determination of spoilage micro-organisms indicates whether the production and the processing practices carried out by beekeepers and warehouses were adequate. Significance and Impact of the Study: Contamination of bee-pollen can occur during production, collection and processing, but there are few studies of the microbiological quality of this product. Brazil is an important producer of dehydrated bee-pollen, therefore, a diagnosis of the microbiological status is important to ensure the safety of many consumers. Salmonella sp., genus Clostridium, coagulase-positive Staphylococcus, Escherichia coli and even some yeast species are micro-organisms of public health concern and their presence must be monitored. Furthermore, the determination of spoilage micro-organisms indicates whether the production and the processing practices carried out by beekeepers and warehouses were adequate.The authors are grateful to State of S~ao Paulo Research Foundation (FAPESP) for financial support (FAPESP process 2011/51741-5) and scholarship granted to Adriane Alexandre Machado de Melo (FAPESP process 2013/ 23179-6).info:eu-repo/semantics/publishedVersio

A dog oviduct-on-a-chip model of serous tubal intraepithelial carcinoma

Ovarian cancer is the fifth cause of cancer-related mortality in women, with an expected 5-year survival rate of only 47%. High-grade serous carcinoma (HGSC), an epithelial cancer phenotype, is the most common malignant ovarian cancer. It is known that the precursors of HGSC originate from secretory epithelial cells within the Fallopian tube, which first develops as serous tubal intraepithelial carcinoma (STIC). Here, we used gene editing by CRISPR-Cas9 to knock out the oncogene p53 in dog oviductal epithelia cultured in a dynamic microfluidic chip to create an in vitro model that recapitulated human STIC. Similar to human STIC, the gene-edited oviduct-on-a-chip, exhibited loss of cell polarization and had reduced ciliation, increased cell atypia and proliferation, with multilayered epithelium, increased Ki67, PAX8 and Myc and decreased PTEN and RB1 mRNA expression. This study provides a biomimetic in vitro model to study STIC progression and to identify potential biomarkers for early detection of HGSC.</p

Avaliação fenotípica da produção de biofilmes por estirpes de Staphylococcus aureus isolados de propriedade leiteira.

Edição dos Trabalhos apresentados no V Congresso Latino Americano e XI Congresso Brasileiro de Higienistas de Alimentos, I Encontro Nacional de Vigilância de Zoonoses e Agravos Causados por Animais de Interesse à Saúde Pública, III Encontro do Sistema Brasileiro de Inspeção de Produtos de Origem Animal, Salvador, abr. 2011

Monitoramento das características química de solo em barragem subterrânea no Semiárido paraibano.

Com o objetivo de avaliar as características químicas do solo da área de plantio/captação de água de barragens subterrâneas, foram monitoradas quatro barragens no estado da Paraíba em propriedades localizadas nos Municípios de Remígio, Arara e Casserengue no período chuvoso de 2011 e 2012. As análises químicas permitiram avaliar a qualidade do solo, principalmente a salinidade das barragens, empregando-se índices clássicos da literatura, como CE e RAS. As quatro barragens subterrâneas monitoradas, não apresentaram problemas de salinidade, possivelmente essas barragens encontram-se com manejo adequado e dentro das características necessária para construção de barragem. É fundamental, antes de construir uma barragem subterrânea, certificar-se da qualidade da água do riacho, bem como do solo circundante, através de análise destes dois parâmetros, assegurando, assim, maior eficiência da tecnologia

Produção de biofilmes por Staphylococcus aureus e a associação com os genes icaAD e clfAB no processo de formação.

A formação de biofilmes nas doenças crônicas de animais pelos Staphylococcus aureus têm aumentado o interesse por pesquisas com a caracterização de genes envolvidos neste processo. Este estudo tem como objetivo determinar a habilidade dos Staphylococcus aureus produzirem biofilmes e associar com os genes de adesão icaAD e clfAB. Foram estudadas 440 estirpes de S. aureus oriundas de leite de vacas com mastite subclínica, tanque de expansão e ambiente de ordenha. Para determinar a produção de biofilme foram realizados os testes fenotípicos do Ágar Vermelho Congo e teste de aderência em microplacas. Para identificar os genes envolvidos foi realizada a reação em cadeia da polimerase. Os resultados demonstraram que a grande maioria dos isolados foram capazes de produzir biofilme ?in vitro? sendo 79% dos isolados de leite e 89% dos isolados de ambiente de ordenha no Agar Vermelho Congo e 84% para as estirpes oriundas de leite e 85% para as estirpes oriundas de ambiente de ordenha no teste de microplacas, sendo que 90%, 97% ,99% e 98% das estirpes apresentaram os genes icaA, icaD, clfB e clfA respectivamente. O envolvimento dos genes com a produção de biofilme principalmente nos equipamentos de ordenhadeira, alerta para um melhor direcionamento nas condutas higiene e sanitazação além da terapia e prevenção da mastite em bovinos leiteiros

Respostas fotossinteticas de Sesbania exasperata Kunth cultivada na presença de arsênio.

Com objetivo de estudar os efeitos da toxicidade do As em plantas, avaliaram-se as respostas fotossintéticas de Sesbania exasperata cultivadas em vasos plásticos com 1,39 dm3 de solo nas concentrações de 0; 100; 200; 400 e 800 mg dm-3 de As, na forma de arsenato de sódio.Suplemento. Edição dos Resumos do XI Congresso Brasileiro de Fisiologia Vegetal, Gramado, set. 2007

Avaliação do escurecimento de grãos de linhagens de feijoeiro-comum, no Estado de Mato Grosso.

O presente trabalho teve como objetivo avaliar linhagens de grão carioca com escurecimento lento de grãos no estado de Mato Grosso.CONAF