Buscador de Tesis y publicaciones académicas

High resolution lipoprotein subfraction profiling identifies obesity associated distributional changes in LDL and HDL subfractions and particle ratios

Novia Minaee · Reika Masuda · Philipp Nitschke · Drew Hall · y 20 más

Abstract Background Obesity is associated with adverse alterations in lipoprotein profiles and increased cardiometabolic risk, yet standard clinical lipid measures provide limited resolution of the underlying lipoprotein structure. Here, we perform a population-level characterisation of the impact of obesity on the hig...

Hybrid Recommendation System for the Marketing of Artisanal Agricultural Products in Dispersed Rural Markets

Mary Elsy Arzuaga-Ochoa · Jorge Gómez · Melisa Acosta-Coll · Mauricio Barrios-Barrios

Artisanal farmers in developing regions capture limited commercial value due to information asymmetries, market fragmentation, and informal intermediation, where commercialization, rather than production, is the main bottleneck for rural income. This study formalizes artisanal agricultural commercialization as a buyer-...

Genetic Diversity and Population Structure of Wild and Hatchery-Associated Prochilodus magdalenae from Northern Colombia

Leonardo Chamorro-Anaya · Adriana Quintana-Canabal · Juan Cardenas-Guerra · Jorge Romero-Polo · y 2 más

Maintaining genetic diversity is essential for the long-term conservation of migratory freshwater fishes facing increasing anthropogenic pressures. Prochilodus magdalenae (bocachico), one of Colombia’s most economically and ecologically important freshwater fish species, supports artisanal fisheries, regional food secu...

Skew-symmetric augmented matrices and a characterization of virtual doodles

Oscar Ocampo · José Gregorio Rodríguez-Nieto · Olga Patricia Salazar-Díaz

Abstract In this paper, we present a brief overview of the concept of doodles from the perspective of J. S. Carter’s work on classifying immersed curves and the work of J. Carter, S. Kamada, and M. Saito on stable equivalence of knots on surfaces and virtual knot cobordisms. We use the homology intersection number and...

Adding Value to Cassava Genetic Resources Conserved at CIAT—Part II: Fifty Years of Evaluation and Use of Landraces for Variety Development

Clair H. Hershey · Hernan Ceballos · Sean Fenstemaker · Carlos Iglesias · y 4 más

For millennia, farmers in cassava’s homeland in the neotropics selected varieties suited to their climate, soils, biological environments, management systems, and nutritional needs. These actions were fundamental to the crop’s success as a reliable staple energy source. After the arrival of Europeans in the New World,...

GW240925 and GW250207: Astrophysical Calibration of Gravitational Wave Detectors

The LIGO Scientific Collaboration · the Virgo Collaboration · the KAGRA Collaboration · Abac, A. G. · y 196 más

GW240925 and GW250207 are two loud gravitational-wave signals from binary black hole coalescences observed with network signal-to-noise ratios ∼ 32 and ∼ 69 , respectively, by the LIGO Hanford-LIGO Livingston-Virgo network. Gravitational-wave signals from coalescing binaries have characteristic phase and amplitude evol...

Recovering Latent Association from Likert-Type Responses: A Monte Carlo Comparison of Pearson, Spearman, Kendall, and Polychoric Correlations Under Discretization, Response Perturbation, and Gumbel-Copula Dependence

Diógenes de Jesus Ramirez-Ramirez · Osnamir Elias Bru-Cordero · Cristian David Correa-Álvarez

Likert-type responses are often analyzed as continuous scores, although their categories are ordered rather than truly metric. This study uses Monte Carlo simulation to examine how ordinal discretization, response perturbation, and non-Gaussian dependence affect four association estimators: Pearson correlation, Spearma...

Additional file 1 of Non-pharmacological interventions for older adults with mild cognitive impairment: an umbrella review

Diana C. Tiga-Loza · Edwing A. Urrea-Vega · Raquel Rivera-Carvajal · William A. Alvarez-Anaya · y 3 más

Effects of Zinc Supplementation on Glycemic Control, Insulin Resistance, Inflammation and Oxidative Stress in Diabetes: A Systematic Review and Meta‐Analysis of Randomized Controlled Trials

Jessica Paola Loaiza‐Giraldo · Florencia Amigo‐Fierro · Camila Ignacia Cancino‐Castro · Matias Donoso‐Emig · y 12 más

ABSTRACT Objectives Diabetes mellitus (DM) is a chronic metabolic disorder characterized by insulin resistance, impaired insulin secretion, and increased cardiometabolic and inflammatory burden. Zinc plays a key biological role in insulin synthesis, storage, signalling and antioxidant defence; however, the clinical rel...

Epidemiological characterization of snakebite in Colombia, 2017–2023

Maria Camila Rangel-Piñeros · Maria D. Ramiro-Gonzalez · Mario Javier Olivera · José Leonardo Gómez-Gómez · y 1 más

Snakebite is a neglected public health problem worldwide, particularly in tropical countries such as Colombia.This study aims to describe the epidemiological characteristics of snakebite cases in Colombia between 2017 and 2023.A cross-sectional observational study was conducted using data from the National Public Healt...