Publications by authors named "Edson Aparecido Dos Santos"
Article Synopsis
- The objective of the study was to estimate the presence of SARS-CoV-2 antibodies in schoolchildren aged 4 to 14 in São Paulo during school closures due to COVID-19.
- A serological survey conducted in September 2020 revealed a 16.6% seroprevalence overall, with higher rates in municipal (18.5%) and state (16.2%) public schools compared to private ones (11.7%).
- The findings indicated that higher seroprevalence occurred among black and brown students and those in vulnerable social groups, highlighting the need for targeted public policies to monitor and protect these populations.
Pesticide dependence is one of the main disadvantages of agriculture. Despite the advances in biological control and integrated management of plant pests and diseases in recent years, herbicides are still essential for weed control and constitute the main class of pesticides worldwide. Herbicide residues in water, soil, air, and non-target organisms are among the biggest agricultural and environmental sustainability obstacles.
View Article and Find Full Text PDFCompetition with weeds is one of the main factors that limit the development of forest species. Some herbicides used to control these plants have a residual effect on the soil. Bioremediation is an alternative to decontaminate these areas.
View Article and Find Full Text PDFArticle Synopsis
- The study aimed to assess how common SARS-CoV-2 infections were among residents 18 and older in São Paulo from June 2020 to February 2021 through a population-based survey conducted every 15 days.
- Researchers tested blood samples for antibodies and used a questionnaire to gather information on participants' demographics and social behaviors related to COVID-19.
- Results showed that 9.7% to 25.0% of participants had antibodies, with higher prevalence in marginalized groups, and highlighted social inequality as a significant factor in infection rates, while 45.1% of infections were asymptomatic.
Hormone-like herbicides, used for large crops, can contaminate non-target areas with their waste. The objective of this study was to evaluate the tolerance of and to 2,4-D + picloram herbicides by means of morphological and anatomical evaluations. The experiment was performed in a greenhouse in a 4 × 2 factorial scheme.
View Article and Find Full Text PDFTrees occurring on the margins of agricultural areas can mitigate damage from residual herbicides. Rhizospheric microbial activity associated with trees is one of the main remedial capacity indicators. The objective of this study was to evaluate the rhizospheric microbiological activity in tree species subjected to the herbicides atrazine and sulfentrazone via the rhizosphere.
View Article and Find Full Text PDFResidual herbicides are important for agricultural production but they may be lost underground. Trees capable of removing or degrading these products are interesting to the agro system. The objective was to evaluate the tolerance and remedial potential of trees in soil contaminated by atrazine and sulfentrazone.
View Article and Find Full Text PDFThe aim of this study was to determine the environmental concentration of atrazine (ATZ) in five streams located in the north of São Paulo state (Brazil) and evaluate its toxicological impact on young specimens of the pacu fish Piaractus mesopotamicus. Samples of water were collected on three occasions between 2010 and 2011, corresponding to periods signifying the beginning, middle, and end of rain season. ATZ levels were estimated by a high-performance liquid chromatography coupled with a mass spectrometry (HPLC-MS/MS) triple quadrupole.
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