Publications by authors named "G Fernando Cubillos"
The rapid advancement of technology necessitates the continual development of versatile materials that can adapt to new electronic devices. Rare earth elements, which are scarce in nature, possess the set of properties required for use as semiconductors. Consequently, this research aims to achieve similar properties using materials that are abundant in nature and have a low commercial cost.
View Article and Find Full Text PDFThin films of transition metal oxides and oxynitrides have proven highly effective in protecting stainless steels against corrosion in both chemically aggressive environments and biological fluids. In the present work, cerium zirconium oxynitride thin films were deposited to enhance the corrosion resistance of surgical-grade stainless steel to be used in osteosynthesis processes. Two techniques were employed: co-sputtering and radiofrequency (RF) sputtering, and the morphology and corrosion efficiency of the coatings deposited by each technique were evaluated.
View Article and Find Full Text PDFPatients undergoing metabolic surgery have factors ranging from anatomo-surgical, endocrine metabolic, eating patterns and physical activity, mental health and psychological factors. Some of the latter can explain the possible pathophysiological neuroendocrine, metabolic, and adaptive mechanisms that cause the high prevalence of weight regain in postbariatric patients. Even metabolic surgery has proven to be effective in reducing excess weight in patients with obesity; some of them regain weight after this intervention.
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- This study focuses on early prediction of Gestational Diabetes Mellitus (GDM) risk using machine learning (ML) models, which can help in effective interventions for both mother and fetus, especially in areas without advanced medical testing.
- A dataset of 1,611 pregnancies was analyzed, optimizing twelve ML models to enhance prediction accuracy, with key variable selection methods implemented for better results.
- The top models demonstrated high sensitivity and specificity for GDM prediction, achieving a balance of accuracy and the number of input variables needed, indicating potential for use in regular prenatal care.
ZrN-ZrO[Formula: see text]N[Formula: see text] and ZrO[Formula: see text]-ZrO[Formula: see text]N[Formula: see text] coatings were deposited on 316L stainless steel substrates via the unbalanced DC magnetron sputtering technique in order to improve their corrosion resistance and evaluate their possible use as a coating biocompatible with bone cells. The composition, structure, morphology, and corrosion resistance were studied by sum means of x-ray photoelectron spectroscopy (XPS), x-Ray diffraction (XRD), scanning electron microscopy (SEM), and atomic force microscopy (AFM). The corrosion resistance was evaluated in 3.
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