University of O'Higgins

Silicon Fertigation and Azospirillum brasilense Modulate the Microbiological Profile of Total Mixed Ration Silage for Dairy Goats

The objective of this study was to evaluate the effects of fertigation with silicon (Si) combined with inoculation with Azospirillum brasilense during off-season corn cultivation on the fermentation profile, microbiological quality, and chemical and bromatological composition of...

Biotechnological adaptation of high-yielding, gibberellin-overproducing Populus trees to seasonal growth patterns

Tree growth is central to both terrestrial ecology and the forestry industry. Biotechnology for inducing the overproduction of phytohormones such as gibberellins (GAs) is a powerful tool for improving tree yield and wood properties. Augumentation of GAs in trees in temperate and...

A Rare Roman Multi-Sheave Block from Alexandria

Ship J2 was discovered and excavated by the Institut Européen d’Archéologie Sous-Marine (IEASM) in the Portus Magnus of Alexandria, Egypt, between 2023 and 2024. According to its construction details and the ceramic assemblage from the fill of the hull, the ship dates to the 1st–...

Dietary Patterns, Micronutrient Adequacy, and Metabolic Vulnerability in Alzheimer’s Disease: A Critical Narrative Review

Dietary factors may influence cognitive aging and Alzheimer’s disease (AD), but observational associations, mechanistic findings, and intervention effects should not be considered equivalent evidence. This critical narrative review examines how dietary patterns, micronutrient ade...

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...

Deep molecular profiling of lung neuroendocrine tumours and supra-carcinoids

BACKGROUND: Lung neuroendocrine tumours (NETs, also known as carcinoids) are rapidly rising in incidence worldwide but have unknown aetiology and limited therapeutic options beyond surgery. The current WHO classification, based on mitotic count and presence or absence of necrosis...

A framework to compare the performance of spatial disaggregation methods of statistical climate downscaling in South America

Study region Chile and South America. Study focus Climate change is simulated at a coarse scale with General Circulation Models. Impact and regional studies require downscaling to increase spatial resolution. Several downscaling methods exist, but most studies do not analyze or c...

Measuring Dissimilarity between Convex Cones by Means of Max-Min Angles

Abstract. This work introduces a novel dissimilarity measure between two convex cones, based on the max-min angle between them. We demonstrate that this measure is closely related to the Pompeiu–Hausdorff distance, a well-established metric for comparing compact sets. Furthermore...

Misunderstanding and Overprotection: The Impact of Research Ethics Committees on Social Disability Studies in Chile

This study explores the experiences of researchers in Chile when submitting disability-related projects to Research Ethics Committees. Through a qualitative approach involving 18 semi-structured interviews with researchers, the study identifies the barriers that arise from applyi...