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Similarity in the microbial community structure of tobacco from geographically similar regions.
Sci Rep
December 2024
College of Agronomy, Hunan Agricultural University, Changsha, 410128, China.
To investigate the structural and functional similarities of microbial communities in burnt-sweetness alcoholized tobacco as a function of distance from the equator and their effects on tobacco quality, we sampled alcoholized tobacco from Chenzhou, Hunan Province, China and from Brazil and Zimbabwe, which are also burnt-sweetness-type tobacco producing regions, and performed high-throughput sequencing of tobacco bacterial and fungal communities along with an analysis of the main chemical constituents of the tobacco to analyze differences in the quality of the tobacco and similarities in the structure of the microbial communities. The total nitrogen, nicotine and starch contents of Chenzhou tobacco were greater than those of Brazilian and Zimbabwean tobacco, and the total sugar and reducing sugar contents of the Brazilian and Zimbabwean tobacco were greater than those of the Chenzhou tobacco (P < 0.05).
View Article and Find Full Text PDFMental health indicators in pharmaceutical sciences students during the COVID-19 pandemic.
Curr Pharm Teach Learn
December 2024
School of Pharmaceutical Sciences, São Paulo State University (UNESP), São Paulo, Brazil. Electronic address:
Introduction: The COVID-19 pandemic changed the daily lives of university students and affected their mental health. The aim of this study was to assess the feelings and perceptions regarding the pandemic and teaching, and to identify the mental health symptoms perceived by pharmaceutical sciences students at a Brazilian public university.
Methods: This is a cross-sectional study with data triangulation (mixed-methods approach), conducted online with semiannual data collection from May 2020 to May 2021.
Genomic data support reticulate evolution in whiptail lizards from the Brazilian Caatinga.
Mol Phylogenet Evol
December 2024
Department of Earth and Environmental Sciences, Rutgers University, Newark, NJ, USA.
Species relationships and speciation have traditionally been represented by phylogenetic trees, but not all evolutionary histories fit into bifurcating divergence models. Introgressive hybridization challenges this assumption by sometimes [or maybe often] leading to mitochondrial introgression, wherein one species' mitochondrial genome is entirely replaced by another's (mitochondrial capture). Such processes result in mitonuclear discrepancies, complicating species delimitation and phylogenetic inference.
View Article and Find Full Text PDFImpact of the COVID-19 pandemic on dengue in Brazil: Interrupted time series analysis of changes in surveillance and transmission.
PLoS Negl Trop Dis
December 2024
Institute of Mathematics and Computer Science, University of São Paulo, São Carlos, SP, Brazil.
Measures to curb the spread of SARS-CoV-2 impacted not only COVID-19 dynamics, but also other infectious diseases, such as dengue in Brazil. The COVID-19 pandemic disrupted not only transmission dynamics due to changes in mobility patterns, but also several aspects of surveillance, such as care seeking behavior and clinical capacity. However, we lack a clear understanding of the overall impact on dengue in different parts of Brazil and the contribution of individual causal drivers.
View Article and Find Full Text PDFMulticenter comparative analysis of local and aggregated data training strategies in COVID-19 outcome prediction with Machine learning.
PLOS Digit Health
December 2024
School of Public Health, University of São Paulo, São Paulo, Brazil.
Machine learning (ML) is a promising tool in assisting clinical decision-making for improving diagnosis and prognosis, especially in developing regions. It is often used with large samples, aggregating data from different regions and hospitals. However, it is unclear how this affects predictions in local centers.
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