Publications by authors named "Loriz Francisco Sallum"
Multiclass classification of Autism Spectrum Disorder, attention deficit hyperactivity disorder, and typically developed individuals using fMRI functional connectivity analysis.
PLoS One
October 2024
Article Synopsis
- Neurodevelopmental conditions like Autism Spectrum Disorder (ASD) and Attention Deficit Hyperactivity Disorder (ADHD) often have overlapping symptoms, complicating accurate diagnosis and treatment.
- This study uses advanced machine learning to analyze fMRI data from 120 subjects, achieving high accuracy in differentiating between ASD, ADHD, and typically developed individuals, with an ROC curve area nearing 98%.
- The research identifies unique brain connectivity patterns for each condition, aligning with clinical observations, and suggests that machine learning could improve diagnostic processes and clinical decision-making in neurodevelopmental disorders.
Determination of acetylsalicylic acid in commercial tablets by SERS using silver nanoparticle-coated filter paper.
Spectrochim Acta A Mol Biomol Spectrosc
December 2014
In this work, filter paper was used as a low cost substrate for silver nanoparticles in order to perform the detection and quantification of acetylsalicylic acid by SERS in a commercial tablet. The reaction conditions were 150mM of ammonium hydroxide, 50mM of silver nitrate, 500mM of glucose, 12min of the reaction time, 45°C temperature, pretreatment with ammonium hydroxide and quantitative filter paper (1-2μm). The average size of silver nanoparticles deposited on the paper substrate was 180nm.
View Article and Find Full Text PDFSupported silver nanoparticles on filter paper were synthesized using Tollens' reagent. Experimental designs were performed to obtain the highest SERS enhancement factor by study of the influence of the parameters: filter paper pretreatment, type of filter paper, reactants concentration, reaction time and temperature. To this end, fractional factorial and central composite designs were used in order to optimize the synthesis for quantification of nicotinamide in the presence of excipients in a commercial sample of cosmetic.
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