University of Concepción

Effects of a Chilean Hazelnut-Supplemented Diet on Oxidative Stress and Cytokine Expression in PBMCs of Hypercholesterolemic Adults: A Randomized Controlled Trial

Background/Objectives: Hypercholesterolemia is characterized by alterations in lipid metabolism, oxidative stress, and inflammatory status. Nuts have been shown to mitigate these alterations; however, limited evidence is available regarding their effects in the Chilean population...

Inverse Gas Chromatography Characterization of Cellulose Nanofibers: Impact of Chemical Composition on Surface Properties

ABSTRACT Inverse gas chromatography (IGC) was employed to investigate how the presence of hemicellulose influences surface properties and adsorption behavior of cellulose nanofibers. Two samples prepared under equivalent processing conditions were compared: cellulose rich nanofib...

Habitat Risk Assessment for the Tidal Marshes and Flats of Huildad Bay, Isla Grande de Chiloé, Chile

The tidal marsh and tidal flats in the intertidal zones of Chiloé, Chile are highly productive ecosystems that provide essential ecosystem services and preserve local biodiversity. However, they face increasing pressure from human activities. This study evaluated the cumulative r...

Limited global awareness of invasive alien species and little support for their management

Invasive alien species (IAS) are one of the main drivers of global change and can cause a wide range of negative ecological and social impacts. Addressing these impacts requires management actions, which can fail to be effective when not supported by the public. Here, we conducte...

Overweight, Obesity, and Musculoskeletal Symptom Burden in Chile: A Population-Based Cross-Sectional Study

Background/Objectives: Musculoskeletal symptoms (MSS) are among the leading causes of pain and functional limitation worldwide, yet population-level evidence linking excess body weight to MSS in Latin America remains scarce. This study examined the association between body mass i...

Feasibility of High-Pole-Number Synchronous Reluctance Machines for Low-Speed, High-Torque Direct-Drive Applications

Direct-drive, low-speed, high-torque (LSHT) applications operating at a fixed rated frequency require electrical machines with high pole numbers. However, synchronous reluctance machines (SynRMs) are often considered unsuitable in this range because increasing the pole number can...

GPCR/moody reduction at the blood–brain barrier accelerates Alzheimer’s-like neurodegeneration in Drosophila

Abstract Background The blood–brain barrier (BBB) is essential for maintaining central nervous system homeostasis by regulating the exchange of molecules between the brain and circulating blood. Dysfunction of this barrier has been implicated in the progression of several neurode...

Gas-Phase Photocatalytic Nitrogen Conversion over Nanostructured Metal-Modified Fe2O3: The Role of Surface Chemistry, Band Alignment, and Hydrogen Activation

Abstract Photocatalytic nitrogen conversion over iron oxide-based materials remains challenging, particularly under gas-phase conditions, where reaction pathways and product distributions are poorly understood. Herein, nanostructured Fe2O3 and metal-modified Fe2O3 photocatalysts...

Onshore surface–subsurface correlation of orogenic structures and the continuation of the late Paleozoic Gondwanides in the Tierra del Fuego fold-and-thrust belt, southern Patagonia

Background The Cretaceous–Cenozoic Tierra del Fuego fold-and-thrust belt in southern Patagonia exposes Paleozoic–Cenozoic rocks recording the protracted, subduction-dominated tectonic evolution of South America, from Cambrian–Ordovician magmatism to Permian metamorphism, Jurassic...

Artificial intelligence in human parasitic gastrointestinal infections: a systematic review closing the protozoan gap

Abstract Human parasitic gastrointestinal infections affect over 3.5 billion people worldwide, yet their diagnostic management remains heavily dependent on conventional microscopy. While artificial intelligence (AI) has emerged as a valuable tool in digital parasitology, its appl...

Slip-Informed Ground-Motion Models in Subduction Zones

ABSTRACT Ground-motion models (GMMs) are fundamental tools for seismic hazard analysis but typically rely on simplified distance metrics that fail to capture the spatial heterogeneity of energy radiated during earthquake ruptures. In this study, we evaluate the performance of GMM...

Horizontal mitochondrial transfer and mitochondrial transplantation in skin: protection against UVR-induced ROS damage and enhancement of cell proliferation and wound healing

Skin homeostasis, protection against ultraviolet radiation (UVR), and wound repair depend on coordinated interactions among melanocytes, keratinocytes, and fibroblasts. Horizontal mitochondrial transfer (HMT) is a naturally occurring form of intercellular communication in which m...

Design and Evaluation of Molecularly Imprinted Nanoparticles for Oxolinic Acid Photodegradation

Abstract Molecularly imprinted polymers have evolved into versatile functional platforms that extend far beyond traditional separation science applications. This work reports the development of photoactive molecularly imprinted nanoparticles (MINs) for the capture and photocataly...

Projecting the evolution of the Northern Patagonian Icefield until the year 2200

The Northern Patagonian Icefield (NPI), Chile, is the second-largest ice mass in the Southern Hemisphere outside Antarctica and a major remnant of the Patagonian ice sheet from the Last Glacial Period. It is located in the Southern Andes, which is among the world’s glacierized re...

Evaluation of the Quality of Solid Fertilizers by Portable X‐Ray Fluorescence

ABSTRACT The growing global demand for food necessitates an increase in the supply of fertilizers that enable greater crop productivity in a sustainable manner, minimizing environmental impacts. The increasing availability of fertilizer products and formulations has raised concer...

Anthropometric Characteristics, Neuromuscular Performance and Cardiorespiratory Fitness of Chilean Youth Soccer Players: A Cross-Sectional Study

Background and Objectives: Comprehensive physical profiling is important for monitoring athletic development in youth soccer players (YSP), yet integrated data from competitive South American players remain limited. This study aimed to characterize the anthropometric profile, neu...

Maxwell kinematical algebras and 3D gravities

Abstract In this paper, we present a Maxwell extension of kinematical Lie algebras by promoting the contraction method underlying the Bacry and Lévy-Leblond cube to a semigroup expansion framework. Within this approach, we show that both non- and ultra-relativistic Maxwell algebr...

Replication package: World prices govern the timing and local climate the location of a perennial crop boom

Specialty tree-crop booms are rapidly reshaping land use and rural livelihoods across the Global South, yet the forces that drive them are seldom observed across an entire expansion. Here we reconstruct a census-grade, year-by-year record of new hazelnut planting across southern...

New Approaches for Monitoring Edible Coating Quality Using Hyperspectral Imaging (HSI) and Chemometrics

Abstract Preserving fruit quality after harvest presents a major challenge for the food industry, and edible coatings are increasingly proposed as sustainable alternatives to synthetic packaging materials. This work offers a concise review of recent advances in edible coatings fo...

Nanofiber-based second-order atomic Bragg lattice for collectively enhanced coupling

Abstract We propose two experimental schemes for nanofiber-based compensated optical dipole traps that optimize the collective coupling of a one-dimensional array of atoms. The created array satisfies the second-order Bragg condition (d = λ), facilitating constructive interferenc...