Universidad Técnica Federico Santa María

Stacking Ensemble Learning for Copper Grade Prediction at the Sungun Porphyry Copper Deposit: Statistical Performance Versus Geological Coherence

Mineral resource estimation has traditionally relied on geostatistical techniques such as Ordinary Kriging (OK), which explicitly account for spatial continuity but may introduce smoothing effects and require extensive manual parameterization. In parallel, Machine Learning (ML) m...

Decoding multiway gravitational junctions in AdS in terms of holographic quantum maps

A bstract It has been shown that multiway junctions gluing n copies of locally AdS 3 spacetimes ( n ≥ 2) can be described by n − 1 strings obeying non-linear Nambu-Goto equations coupled by Monge-Ampère like terms. Here we study how such junctions along with their stringy degrees...

Structural integration of inert porous media as a primary mitigation strategy for firewood stoves: Toward decoupling combustion intensification from emissions

Residential wood combustion in energy-vulnerable contexts creates a critical trade-off between thermal comfort and air quality, while many conventional emission-control technologies require electricity, maintenance, or active control. This study evaluates the structural integrati...

Type I + II seesaw model in light of the new neutrino oscillation measurements

Abstract Global analysis of neutrino oscillation data slightly favors normal mass ordering. In this work, we investigate an extended scalar sector that naturally gives rise to a type I + II seesaw mechanism after spontaneous symmetry breaking and explore the interplay between col...

The effects of increasing and decreasing dopamine on inhibition of return: a psychopharmacological investigation

Abstract Inhibition of Return (IOR) is the phenomenon of being slower to re-attend to previously attended locations, and is thought to improve the efficiency of attention. Previous studies of dopaminergic disorders indicate that excessive or insufficient dopamine signaling in the...

Co-creation with older adults in undergraduate design education: illustrative evidence from two Chilean cases in the Global South

This study explores the role of co-creation with older adults in undergraduate design education in Chile using a multi-case illustrative design. Two educational experiences that incorporated participatory design approaches are examined: a short-term User-Centered Design (UCD) wor...

Visible-spectrum image analysis for copper concentration measurement in heap leach solutions: Characterization of photographic and model parameters using a laboratory prototype

Heap leaching is widely used for the recovery of copper from low-grade oxide ores. Continuous monitoring of copper concentration in the pregnant leach solution (PLS) is essential for tracking leaching kinetics, determining optimal irrigation termination, and balancing metallurgic...

Characterization of the Immune Response of Atlantic Salmon to Tenacibaculum dicentrarchi Using In Vivo and In Vitro Approaches

Tenacibaculosis, primarily caused by Tenacibaculum dicentrarchi in Chile, is now the second leading infectious cause of mortality in Chilean Atlantic salmon (Salmo salar) farming, yet the host immune response remains uncharacterized. Here, we combined in vitro and in vivo approac...

Dust Substructures and Line Perturbations driven by a Forming Planet in J16120

Abstract Hints of planet formation have been independently reported within the gap of the disc around 2MASS J16120668-301027 from millimetre continuum, infrared, and Hα observations. In this work, we present new evidence for ongoing planet formation based on Atacama Large Millime...

Rhodococcus erythropolis ICBD2 membrane and cell wall adaptation to long-chain alkane degradation

Abstract Long-chain hydrocarbon biodegradation is limited by its low bioavailability. Specific strains degrade hydrocarbons including long-chain alkanes. Rhodococcus erythropolis ICBD2 is a hydrocarbonoclastic bacterium isolated from a chronically petroleum-contaminated coastal s...

Synthesis and In Vivo Antifungal Evaluation of 3-Acyl-bromoindole Regioisomers: A Multi-Targeting Study on Postharvest Pathogen Control and Molecular Dynamics

Background/Objectives: Postharvest fungal decay caused by Botrytis cinerea and Monilinia fructicola poses major threats to global fruit security. Driven by the need for sustainable crop protection agents, this work presents the systematic synthesis, biological evaluation, and com...

Bioinformatic Identification and Experimental Validation of Novel Antioxidant Peptides Derived from Salmon Collagen

The objective of this study was to identify and experimentally validate novel antioxidant peptides derived from salmon collagen through an integrated bioinformatic and experimental workflow. Collagen sequences from Salmo salar were subjected to in silico enzymatic hydrolysis, and...

Chemical Signaling and Integrated Strategies for Biological Control in Crop Agroecosystems

Food security faces significant challenges due to the growing threat of insect pests and global climate change, making it essential to adopt sustainable agricultural strategies. Plants possess intrinsic defense systems that are activated in response to herbivore attack, including...