Buscador de Tesis y publicaciones académicas

Characterization of patients with bacterial tracheitis after head and neck reconstruction using flaps at a highcomplexity center in Bogotá, Colombia

Sebastian Alejandro Guevara-Carvajal · María Camila Rojas-Gómez · Juana Gabriela Rueda-Donado · Jacobo Moya-Beltrán · y 6 más

Tracheostomy is common in head and neck reconstructive surgeries and is associated with bacterial tracheitis. However, the influence of additional risk factors on the development of this complication remains unclear. This study aimed to estimate the incidence of bacterial tracheitis and describe associated factors in p...

Toward a semiotic-Bayesian epistemology of skeletal trauma interpretation in forensic anthropology

Roberto C. Parra · Frank Crispino · Douglas H. Ubelaker · José A. Saravia-Yataco · y 9 más

This article introduces a semiotic-Bayesian epistemological framework for the analysis and interpretation of skeletal trauma in forensic anthropology. The model integrates Peircean semiotics with probabilistic inference to provide a structured, reproducible approach to evaluating forensic evidence under conditions of u...

Economic and health burden of severe respiratory syncytial virus infection among hospitalised children at three tertiary hospitals in Argentina, Brazil, and Colombia: a two-year prospective multicentre cohort study

Gonzalo G. Guiñazú · Julia Dvorkin · Pilar Sorgente · Pablo Pakciarz · y 17 más

Respiratory syncytial virus (RSV) is a leading cause of severe lower respiratory tract infection (LRTI) in young children, yet prospective data on its societal and health burden in Latin America remain scarce. We estimated the direct medical, direct non-medical, and indirect costs and the health burden (disability-adju...

Genomic and chromosomal Instability: Hidden drivers of Glioblastoma aggressiveness

Anlly Niño-Salgado · Milena Rondón-Lagos

Glioblastoma is the most common and aggressive primary brain tumor in adults, characterized by rapid proliferation, diffuse infiltration, and poor clinical outcomes despite multimodal therapy. A hallmark of GBM biology is its remarkable genomic (GI) and chromosomal instability (CIN), which act as fundamental engines of...

Impact of liquid scintillator manufacturing date on alpha-beta counting efficiency and resolution

Alhussain A. Abuhoza · Aljawharah Almatrif · Jaber A. Maini · Amjad Assiri · y 5 más

This study compares the performance of three batches of OptiPhase HiSafe-3, each with different production and expiration dates, in order to assess the impact of batch age on the counting efficiency of organic liquid scintillators. Three radioactive sources were examined: Sr-90 (low energy β emitter), Ra-228 (ultra-low...

Pattern formation in quantum hierarchical cellular neural networks

W.A. Zúñiga-Galindo · B.A. Zambrano-Luna · Chayapuntika Indoung

We present a new class of quantum neural networks (QNNs) whose states are solutions of $p$-adic Schrödinger equations with a non-local potential that controls the interaction between the neurons. These equations are obtained as Wick rotations of the state equations of $p$-adic cellular neural networks (CNNs). The CNNs...

Structural, compositional, and mechanical assessment of human root dentin following ionizing radiation exposure in head and neck cancer tomotherapy

Sebastián Cortés · Sergio D. Cruz-Romero · Maria C. Plazas · Paula A. Rodríguez-Urrego · y 3 más

Human root dentin may undergo direct physicochemical, microstructural, and mechanical alterations during radiotherapy for head and neck cancer. In this study, healthy third molars were irradiated under tomotherapy-like conditions using a clinically inspired fractionated protocol of 2 Gy per day for 10, 20, and 30 days,...

Assessment of fuel property enhancement toward TRL advancement in biomass torrefaction

Edward Gomez-Delgado · Martha Cobo · Maria José Rey-Sanchez · Ruth Ruiz-Pardo · y 3 más

Rapid seismic screening of non-engineered URM buildings in liquefaction-prone areas

Alejandro Cruz · Hajar Farnoudkia · Shaghayegh Karimzadeh · Nicola Chieffo · y 2 más

Rapid visual screening is essential for prioritising interventions in densely populated, data-scarce areas. However, this process is often complicated by the combined influence of structural vulnerabilities and geotechnical hazards. This study proposes an engineering-driven framework for rapid susceptibility screening...

Membrane-initiated glucocorticoid signaling in the dorsomedial striatum modulates resistance to extinction

Martha Martínez-Degollado · Andrea C. Medina · Paola C. Bello-Medina · Roberto A. Prado-Alcalá

Corticosterone (CORT) modulates aversive memory through glucocorticoid receptor signaling. Although classical models emphasize intracellular receptors and transcriptional mechanisms, glucocorticoids can also produce rapid, non-genomic effects through membrane-associated signaling. The dorsomedial striatum (DMS) is crit...