Buscador de Tesis y publicaciones académicas

Spectral quasilinearization approach to study the entropy generation of unsteady mixed convective MHD Casson MoS 2 -Cu/water hybrid nanofluid flow over an inclined stretching sheet

Arpita Mandal · Arindam Sarkar · Gopinath Mandal

Impact of prolonged video game use on high school students in Duitama, Colombia

Yessica Natalia Corredor-Mesa

Background: Video game addiction is a growing problem among adolescents. This study aims to assess the level of video game addiction among middle and high school students at three public schools in Duitama, Colombia. Methods. A descriptive study was conducted, in which the Video Game Dependence Test (VDT) was administe...

Evaluation of Morphometric Conditioning Factors and Antecedent Rainfall in the Occurrence of Torrential Flows in Colombian Andean Watersheds

Laura Ortiz-Giraldo · Derly Gómez · Edwin F. García · Blanca A. Botero · y 3 más

Torrential flows, a broad category of rapid hydrogeomorphic processes that in the Colombian Andes includes debris flows, mudflows, and hyperconcentrated flows, pose a major hazard in tropical mountain regions. This study used two complementary binary classification models to examine geomorphometric conditioning and ant...

Neonatal extracorporeal membrane oxygenation in Colombia: outcomes, complication burden, and circuit-level constraints in a 15-year single-center cohort

Angelica Ortiz-Córdoba · Edgar Fabián Manrique-Hernández · Andrés Felipe Rubio-Duarte · Claudia C. Colmenares-Mejía · y 6 más

Background Neonatal extracorporeal membrane oxygenation (ECMO) is a highly specialized therapy for severe respiratory and/or cardiovascular failure, but data from low- and middle-income countries remain limited. We aimed to describe outcomes, complications, and implementation-related challenges in a 15-year neonatal EC...

CARACTERIZACIÓN DEL MANEJO REPRODUCTIVO Y GENÉTICO EN SISTEMAS DE PRODUCCIÓN OVINO - CAPRINA DE OCHO MUNICIPIOS DE NORTE DE SANTANDER, COLOMBIA: ESTUDIO TRANSVERSAL

Dubel Cely Leal · Jhon Bustamante Cano · José Flórez Gélvez · Henry Rivera Claro · y 1 más

La producción ovino - caprina representa una actividad de gran importancia para la economía de numerosas familias rurales en Colombia. A pesar de ello, todavía es limitada la información sobre las prácticas de uso reproductivo y mejoramiento genético que se desarrollan en estos sistemas de producción. El presente estud...

LEAN STARTUP IN PERSPECTIVE: A SCIENTOMETRIC ANALYSIS USING TREE OF SCIENCE

John Eider Vásquez Hernández · Sebastian Robledo-Giraldo · Jaime Andrés Vieira Salazar

The Lean Startup methodology has emerged as an agile strategy for developing new ventures, especially in digital and highly uncertain environments. This article presents a systematic literature review guided initially by a scientometric analysis and then by the Tree of Science approach, classifying seminal works (roots...

Arteria coronaria única con clasificación Lipton-Yamanaka RIII ADA-A, ACX-P: evaluación clínica e imagenológica

Jose David Sáenz López · Valeria Sofía Almeida Bustillo · Juan Camilo Diaz Hernández · Raiza Andrea Pinedo Frias · y 2 más

La arteria coronaria única es una anomalía congénita poco frecuente, con una prevalencia que oscila entre el 0,02 % y el 0,06 % en estudios angiográficos. Este artículo presenta un caso clínico de una variante excepcionalmente infrecuente, clasificada como RIII ADA-A, ACX-P según el sistema Lipton-Yamanaka. Se describe...

Correlation of structure and function in native starches assisted by principal component analysis

Liliana Avila‐Martín · Sandra Arroyave · Cristian C Villa · Jairo E Perilla

Abstract BACKGROUND Understanding how properties such as amylose/amylopectin ratio, granule morphology, crystallinity, molecular weight, and branching degree dictate functionality is essential for optimizing starch applications in food and biomaterials. Principal component analysis (PCA) is a multivariate tool that int...

Search for τ− → μ−μ+μ− decays at the LHCb experiment with Run 2 data

LHCb collaboration · Aaij, R. · Abdelmotteleb, A. S. W. · Beteta, C. Abellan · y 196 más

A bstract A search for the lepton-flavour-violating decay τ − → μ − μ + μ − is carried out using data collected by the LHCb experiment between 2016 and 2018 in proton-proton collisions at the LHC at a centre-of-mass energy of 13 TeV, corresponding to an integrated luminosity of 5.4 fb − 1 . An upper limit of 1 . 9 (2 ....

Metacognition and executive functioning as predictors of functional independence in community-dwelling older adults: a systematic review with bibliometric mapping

Daniel Landinez Martinez · Diana Marcela Montoya Londoño · Antonio Partida Gutierrez de Blume

Functional independence in older adulthood requires cognitive capacity and the ability to monitor, regulate, and adapt behavior in everyday contexts. To synthesize evidence on associations between executive-function and metacognitive or self-regulatory processes and functional independence in cognitively healthy, commu...