Publications by authors named "Renan A de Oliveira"
Changes in land use have been occurring in a continuous and disorderly way in recent decades due to rapid population growth and the growing demand for food. These constant changes result in a series of harmful effects to the environment, especially to water resources, significantly changing their availability and quality. This study aims to evaluate the degradation potential of watersheds through an evaluation of some environmental indicators using arithmetic means to construct an index called in this research "index of potential environmental degradation" (IPED).
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- A neural network model was developed to predict the evolution of cosmological -body simulations, suggesting it effectively approximates the Green's function relating initial conditions to outcomes in complex, nonlinear scenarios.
- The model was tested against various simpler configurations, demonstrating good generalization and the ability to learn physical principles from random Gaussian training data, which highlighted its strengths and weaknesses.
- However, the model struggled with initial conditions that it wasn't trained on, specifically those involving transverse modes, and it achieved high accuracy when compared to traditional simulation methods for density and momentum power spectra, outperforming a fast simulation method called COLA.
Agricultural waste products can be used as biosorbents for bioremediation once they are low-cost and high-efficient in pollutants removal. Thus, waste products from mushroom farming such as cutting and substrate of (popularly known as shiitake) and (also known as champignon) were evaluated as biosorbents for metallic contaminants copper (Cu) and lead (Pb). Shiitake and champignon stalks, and shiitake substrate (medium in which shiitake was cultivated) were dried, grounded, characterized and experimented to remove Cu and Pb from contaminated water.
View Article and Find Full Text PDFEnvironmental noise has been growing in recent years, causing numerous health problems. Highly sensitive environments such as hospitals deserve special attention, since noise can aggravate patients' health issues and impair the performance of healthcare professionals. This work consists of a systematic review of scientific articles describing environmental noise measurements taken in hospitals between the years 2015 and 2020.
View Article and Find Full Text PDFResidues from pharmaceutical products are found in effluents and in other environmental matrices such as soil and surface waters. Chitin and chitosan are highly adsorptive substances present in mushrooms such as champignon (Agaricus bisporus) and shiitake (Lentinula edodes). This study evaluated the adsorption efficiency of shiitake and champignon stalks, and shiitake substrate in water contaminated with paracetamol and 17 α-ethynyl estradiol (EE2).
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