Multi-species tests in bioassays offer a holistic view of the ecosystem's response to toxicity, as different species display varying sensitivities to pollutants. This research aimed to assess the ability of toxicity tests' to distinguish contamination levels, examine site-specific effects, and investigate seasonal variability. Using a multispecies approach (Nannochloropsis oceanica, Artemia franciscana, and Arbacia nigra), bioassays evaluated marine water quality from Callao Bay in Peru across four sampling areas (Naval School: PA1, Peruvian Marine Institute: PA2, Callao Pier: PA3, and San Lorenzo Island: PA4).
View Article and Find Full Text PDFInt J Environ Res Public Health
August 2024
Introduction: The COVID-19 pandemic challenged the scientific community to find and develop a vaccine to fight the disease. However, problems with achieving high vaccine coverage have emerged, even among high-risk groups such as healthcare workers (HCWs).
Objective: The objective of this study is to examine factors that influence HCW's and the general population's adherence to COVID-19 vaccination and national policies to vaccinate HCWs and other target groups.
Unlabelled: The 22q11.2 deletion syndrome (DS) can have a significant impact on functionality. The purpose was to describe 22q11.
View Article and Find Full Text PDFSome studies have reported the removal of As (As) and fluoride (F) using different sacrificial anodes; however, they have been tested with a synthetic solution in a batch system without hydrated silica (SiO) interaction. Due to the above, concurrent removal of As, F, and SiO from natural deep well water was evaluated (initial concentration: 35.5 μg L As, 1.
View Article and Find Full Text PDFWe study the formation of caustics and wavefronts produced by multiple refraction-reflections through a plane-parallel transparent plate, assuming a point source placed at an arbitrary position along the optical axis. The caustic surfaces are obtained by using the envelope's method. Subsequently, the wavefronts are directly related to the involutes, which are associated with the envelopes for all the rays.
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