National University of San Marcos

Well-posedness and polynomial decay for Rao–Nakra sandwich beam with memory and Kelvin–Voigt damping

Abstract In this paper, we investigate the well-posedness and long-term behavior of a Rao–Nakra sandwich beam model with two different damping mechanisms. The top layer is subjected to memory-type damping, described by a relaxation kernel that satisfies standard positivity and de...

Delivery of cardiac rehabilitation through hybrid models and alternative settings by country income classification and decade: Comparisons from the International Council of Cardiovascular Prevention and Rehabilitation’s 2025 Global Audit Update

Objective Cardiac rehabilitation (CR) is an outpatient model of secondary prevention that improves patient outcomes, yet use remains limited. Hybrid/alternative CR addresses these challenges, but global availability, structure, and volumes have not been characterized since the pa...

Brief historical reconstruction of the first university laboratory of experimental psychology in Peru.

The experimental laboratory and the Institute of Psychology and Psychotechnics at the University of San Marcos, which housed it, were inaugurated on November 14, 1935. German professor Walter Blumenfeld (1887-1967), who was in charge of this establishment, assumed the chair of Ex...

Synthesis, DFT studies, and molecular docking of novel pyrazole semicarbazones targeting GPb, PPA-II, and DPP-4 enzymes

Abstract Six new phenyl-1 H -pyrazole-carbaldehyde semicarbazone derivatives ( 1 – 6 ) have been synthesized and characterized by FT-IR, NMR ( 1 H and 13 C), and mass spectrometry. NMR analysis indicated that these compounds in DMSO-d 6 exhibit a cisE isomeric form. This evidence...

When scale matters: Drivers of faunal diversity in cacao production landscapes in the Peruvian Amazon

Preserving biodiversity in tropical agricultural areas relies on a fine balance between crop management strategies and landscape characteristics. Moreover, the response of different species to these local and landscape metrics may greatly differ. Therefore, identifying strategies...

Versatility of Lateral Intercostal Artery Perforator Flaps in Partial Breast Reconstruction: First National Experience of Peru

Objective: Oncoplastic breast surgery (OBS) allows wide oncologic resections without compromising breast symmetry. In small-breasted patients with minimal ptosis, volume displacement techniques have limited applicability. Lateral intercostal artery perforators (LICAP)-based perfo...

Factors Associated with the Dimensions of Compassion Fatigue in Nursing: The Role of Empathy and the Work Environment

Background/Objectives: Compassion fatigue can affect nursing professionals exposed to demanding clinical environments and may be influenced by individual and work-related factors. The objective of this study was to analyze the factors associated with the compassion and fatigue/ex...

Predictors of dengue vaccination intention among adults in selected endemic areas of Peru: a PLS-SEM analysis

Background Dengue remains a major public health challenge in endemic settings. Evidence on the psychosocial predictors of dengue vaccination intention remains limited in Peru. This study aimed to identify predictors of dengue vaccination intention among adults in selected endemic...

Biofunctionalized hierarchical mesoporous zeolite 5A–maghemite hybrids for Cd(II) adsorption: Surface chemistry and interfacial binding mechanisms

Cadmium contamination of water requires adsorbents that combine high removal efficiency, rapid kinetics, and easy recovery after treatment. In this work, two families of biofunctional magnetic nanohybrids, MCZO and MCZ1, were prepared by combining zeolite 5A with γ-Fe 2 O 3 nanop...

Intestinal Microbiota Response to Dietary Hermetia illucens Meal in Cultured Finfish: A Systematic Review

This review synthesizes the available evidence on the effects of Hermetia illucens meal inclusion on the intestinal microbiota of fish. A literature search was conducted in Scopus, Web of Science, PubMed, and Embase from inception to 23 April 2025, including in vivo experimental...

Personal, Normative, and Access-Related Correlates of Fruit and Vegetable Purchase Intention in Peruvian Adults

Background/Objectives: Fruit and vegetable purchase intention may reflect personal, normative, and access-related factors, yet evidence from Peru remains limited. This study aimed to examine associations of health consciousness, family influence, perceived behavioral control, and...

Critical thinking and technostress among university students: the mediating role of AI-related academic self-efficacy

Abstract Background The proliferation of technology in higher education has generated new forms of psychological stress that require an understanding of cognitive mechanisms. Method This study examined the association between critical thinking and technostress and the mediating r...

Study of the Gas-Phase Pyrolysis of N-Aryl-3-Oxobutanamides and the 2-Aryl Hydrazone Derivatives: A Novel Computational Approach Including DFT with Multivariant Analysis

In this work, we carried out a computational study of the gas-phase thermal decomposition of N-aryl-3-oxobutanamides (β-ketoamides) and the 2-arylhydrazone derivatives. We performed calculations using density functional theory (DFT) at the B97D-GD3BJ/deft2tzvp level, with multiva...

Integrated Genome Mining and Bioactivity-Guided Isolation of Antimicrobial Peptides from Bacillus amyloliquefaciens BS4

Bacterial resistance remains a critical global health challenge, driving the continuous search for novel antimicrobial agents. Bacillus amyloliquefaciens is a recognized repository of bioactive metabolites; however, its full biosynthetic potential requires integrated genomic and...

Comparative Evaluation of Machine Learning Models for Global Horizontal Irradiance Estimation in an Arid Coastal Climate

Accurate estimation of global horizontal irradiance (GHI) is relevant for characterizing solar resources in regions with limited measurement infrastructure. This study compared six machine learning models Polynomial Ridge Regression, Decision Tree, Random Forest, XGBoost, Artific...

Trace-element enrichment in agricultural soils under wastewater-influenced surface-water irrigation: a plot-scale study in an Andean micro-watershed

Abstract The use of wastewater-influenced surface waters for agricultural irrigation is common in many regions, yet its implications for soil geochemistry remain insufficiently characterized, particularly in Andean micro-watersheds. This study evaluates the occurrence and distrib...

Immunization withthe Tc85-Derived Peptide Displayedon Virus-like Particles Confers Protection against Trypanosoma cruzi Infection

Abstract Chagas disease, caused by the Trypanosoma cruzi, remains a major global health burden with limited prophylactic options. We describe a vaccine platform that leverages a peptide epitope derived from the T. cruzi trans-sialidase group II (Tc85pep), displayed on the virus-l...

Social Approach to the Epidemiological Characterization of COVID-19 Cases in the Tumbes Region

The aim of the study was to analyse the epidemiological characteristics of confirmed COVID-19 cases in the Tumbes region between March 2020 and December 2022. Method: An ecological design with a descriptive approach was used for the study population, which consisted of 51,421 con...