Buscador de Tesis y publicaciones académicas

First-Principles Study of Electronic, Optical, and Magnetic Properties of Fe-, Co-, and Ni-Doped MoS2 Monolayer

Soufyane Aqiqi · Elarbi Laghchim · C. A. Duque

In this work, a comprehensive first-principles investigation of the electronic, magnetic, and optical properties of pristine and Fe-, Co-, and Ni-doped MoS2 monolayers is presented within the framework of density functional theory. Substitutional transition-metal doping at the Mo site is shown to induce spin-polarized...

A Retrospective Analysis of Dengue-associated Hemophagocytic Lymphohistiocytosis in a Dengue-endemic Country

Daniel De Zubiría Posada · Vanessa Cabrera Guarín · Jacobo Triviño Arias · Oriana Arias Valderrama · y 12 más

Background: Dengue-associated hemophagocytic lymphohistiocytosis (DA-HLH) is a rare but severe hyperinflammatory complication of dengue. Its clinical overlap with severe dengue often delays recognition. We describe the clinical, laboratory and therapeutic characteristics of pediatric patients with DA-HLH in a dengue-en...

Age-related Reference Data for Cortical and Trabecular 3D-DXA Parameters: the SEIOMM-3D-DXA Project

E Casado · S Di Gregorio · C Valero · J González-Macías · y 22 más

Abstract Purpose Osteoporosis and associated hip fractures are a major public health concern. Dualenergy X-ray Absorptiometry (DXA) remains the diagnostic gold standard, but its areal (a) bone mineral density (BMD) measurements have limited sensitivity, as many fractures occur at T-scores above −2.5. Three-dimensional...

Grain size and yield of quinoa with the application of organic matter and biological and mineral fertilizers

Natalia Duque Hoyos · Daniel Ortiz-González · Consuelo Montes Rojas

Abstract The search for alternative crop nutrition practices is essential to reduce dependence on synthetic chemical fertilizers and contribute to sustainability. This study aimed to evaluate the integrated effect of biological fertilizers (3.7 L ha⁻¹), soil mineral fertilizer (90-60-52 kg ha⁻¹ of NPK), foliar mineral...

Study on the impact of injection timing advance on the performance and emissions of a diesel engine fueled with a gasoline–diesel blend

Luisa Fernanda Mónico Muñoz · Oscar Hernando Venegas Pereira

Environmental concerns have increasingly driven industries worldwide, particularly the automotive sector, to address the challenges posed by pollutant emissions from internal combustion engines. Diesel engines, for instance, offer higher thermal efficiency than gasoline engines but remain major contributors to atmosphe...

Neuroprognostication After Cardiac Arrest: From Test-Centered Prediction to Ethically Constrained, Longitudinal Decision-Making

Javier Andrés Mora-Arteaga

Empreendedorismo: causas e dificuldades do empreendedorismo jovem em São Luís

Dimas Costa Guilhermino · Jheissy Louenny de Jesus Pires · Carlos Antônio Furtado Dutra

O presente estudo tem como objetivo analisar as motivações que levam jovens a empreender e as principais dificuldades enfrentadas por microempreendedores individuais no município de São Luís, Maranhão. A pesquisa caracteriza-se como qualitativa, de natureza bibliográfica, baseada na revisão de literatura sobre empreend...

Cultural Adaptation and Validation of the Overall Anxiety and Depression Severity and Impairment Scales in Colombia

N. García-Mejía · J. D. Moreno-Villamizar · J. D. Ángel · C. Parada · y 1 más

Abstract Post-traumatic stress disorder (PTSD), anxiety, and depressive disorders are highly prevalent among individuals affected by armed conflict. In Colombia, over 9 million people have been exposed to such violence, contributing to elevated emotional distress. This study validated the Overall Anxiety Severity and I...

Clinical phenotypes and molecular endotypes of chronic urticaria: Linking clinical expression to underlying immune mechanisms

Murat Türk · Mojca Bizjak-Suran · Pelin Kuteyla Can · Paulo Ricardo Criado · y 10 más

Chronic urticaria (CU) is a biologically heterogeneous inflammatory skin disease characterized by recurrent wheals and/or angioedema. Despite its uniform clinical presentation, the disease encompasses diverse clinical phenotypes and molecular endotypes driven by distinct immune mechanisms. Integrating these patterns is...

Solitary waves generated by the Buneman instability in cold plasmas: particle-in-cell simulations

D F Socha · C A González · H Riascos

Abstract We investigate the formation and evolution of solitons arising from the Buneman instability, considering various plasma parameters. Specifically, we examine the impact of the drift velocity and the influence of the guiding magnetic field on the amplitude of the most energetic modes as well as the propagation s...