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Breast Cancer Pink Route (RRCS): a proposal for the navigation of cancer patients in Montería, Córdoba
Breast cancer remains a leading cause of mortality and morbidity among women in Colombia, a situation exacerbated in regions like Montería, Córdoba, where social, economic, geographic, and administrative limitations persist, affecting access to and continuity of cancer care. The objective of this study was to identify the main barriers to access related to breast cancer and to propose a patient navigation plan adapted to the regional context. A literature review was conducted using scientific databases and grey literature, complemented by a semi-structured interview with a representative of the League Against Cancer – Córdoba Chapter. Based on this review, phenomena such as significant delays in the diagnostic-therapeutic process, low screening coverage, and multiple structural barriers were identified, ultimately leading to diagnosis at advanced stages. As a result, the Breast Cancer Pink Route (RRCS) patient navigation system was proposed, focused on strengthening early detection, streamlining access to health services, and optimizing comprehensive patient support through strategies such as cancer navigation, risk stratification, priority pathways, and telemedicine. It is concluded that the implementation of comprehensive strategies adapted to the regional context will contribute to improving timely access to and the quality of cancer care.
Copyright (c) 2026 Natalia Tabares-Acosta, Camilo Villegas-Pulido, Isabella Vallejo-Caiza, Saray Fernanda Saavedra-Velandia, Mariana Zamudio-Diaz, Francisco Palencia-Sánchez (Autor/a) https://creativecommons.org/licenses/by/4.0
Intramolecular epistasis, in the context of energy compensation, describes how pairs of residues within a protein interact to preserve structural stability under perturbations. This work presents a mathematical framework derived from thermodynamic principles to formalize energy compensation between residues. By defining the scalar function Cpq and incorporating first- and second-order derivatives, local and cross curvatures, and sensitivity coefficients, the model captures how perturbations in conformational states propagate through the protein network. The Hessian matrix is introduced to characterize energetic rigidity, flexibility, and structural coupling, while the coefficients λpq quantify the efficiency of energy transmission and reveal conditions of robustness, plasticity, independence, conflict, and destructive resonance. Altogether, this approach provides a conceptual and quantitative basis for mapping the energetic geometry of proteins, identifying critical regions that act as buffers, absorbers, or amplifiers of perturbations, and advancing the understanding of how proteins maintain homeostasis and adaptive stability.
Copyright (c) 2026 Maurizio Cavani (Autor/a) https://creativecommons.org/licenses/by-nc/4.0
Evaluating teaching practice or staging an ideal class? Pedagogical reflections on the demonstration video requested by INEVAL in Ecuador
The incorporation of demonstration videos as part of teacher performance evaluation processes represents a growing trend in various educational systems. In Ecuador, the implementation of this approach by the National Institute for Educational Evaluation (INEVAL) has generated considerable discussion within the educational community. Based on the experience of recording a demonstration lesson and analyzing hundreds of comments posted by teachers and students on social media, this article reflects on the tensions between the authenticity of pedagogical practice and the tendency to stage idealized lessons to meet evaluation criteria. It analyzes aspects related to school infrastructure, the availability of technological resources, actual teaching conditions, the emotional pressure on teachers, and the methodological challenges arising from recording an evaluative lesson. Finally, it argues that teacher evaluation processes should consider the contextual realities of educational institutions and prioritize pedagogical authenticity over staged perfection.
Copyright (c) 2026 Leonardo Armijos Alarcon (Autor/a) https://creativecommons.org/licenses/by/4.0
Optimal magnetoelastic control of magnetization switching: energy mechanisms and robustness limits
This work examines magnetization switching driven by magnetoelastic control. In this mechanism, switching is not produced by a direct rotation of the magnetization, but by a transient modification of the energy landscape that lowers the effective barrier between magnetic states and enables the transition toward the desired final configuration. The analysis is centered on the operational limits of this control strategy. In particular, dissipation and noise are treated as decisive factors for switching reliability. Within an appropriate parameter range, the process remains stable and reproducible; outside this range, the control loses precision and the transition may become incomplete or fail. The results therefore define an effective operating window for magnetoelastic switching and identify the physical conditions required for its reliable implementation.
Copyright (c) 2026 ISMAEL ELIAS ERAZO VELASCO (Autor/a) https://creativecommons.org/licenses/by/4.0
Mental health in the 1990 peruvian dictatorship. The impact of sensationalism on citizens by the «chicha» newspapers during the Fujimori government
This article analyzes the mental health of citizens in Peru in the 1990s, based on the use of «chicha newspapers» as a measure by the Fujimori government dictatorship to divert attention from matters of public interest. To this end, it focuses on mental health in the context of COVID-19 to highlight, comparatively, its impact on people by producing situations of anxiety, anxiety, pain, and uncertainty in the face of freedom and mental well-being. It then argues that mental health, although currently the object of priority attention by the Peruvian State, has gone through various historical episodes that have put it in jeopardy, highlighting, for the purposes of this research, the Fujimori dictatorship period. He reaches the point where he identifies that the generation of this state of affairs was made possible by the disastrous García Pérez government, which had already seriously affected mental health with the economic crisis and the subversion that swept through the country, paving the way for the rise of Fujimori and his political actions with the «chicha newspapers», which were a psychological tool to reduce any critical stance toward his government through «psychosocial» media. Using sociological and historical techniques, he concludes that the «chicha newspapers», with their sensationalist content, undermined the countryʼs mental health by plunging it into fear and a lack of trust among people, reducing the capacity for citizen indignation against those in power.
Copyright (c) 2026 Luis Alberto Huamán Ordóñez, Danny Mezones Abad, Jessica Pilar Hermoza Calero (Autor/a) https://creativecommons.org/licenses/by/4.0
Quality in health services: the case of Mexican universities
This study investigates the quality of health services provided by universities, focusing on two institutions with comprehensive educational programs: the National Polytechnic Institute (IPN) and the Monterrey Institute of Technology and Higher Education (ITESM). Concepts such as quality, health services, and quality models are presented. The objective is to propose the applicability of quality models to universities that implement comprehensive education. The SERVQUAL model focuses on user perception, allowing for the measurement of satisfaction with the service received. The GAPS model identifies structural weaknesses that hinder service quality. These models allow for the analysis of discrepancies between user expectations and the actual perception of the service, providing insight into the experience of the educational community and paving the way for continuous improvement, ultimately achieving the goal of physical and mental well-being for students.
Copyright (c) 2026 Cintia Gabriela Cardona Garcia (Autor/a) https://creativecommons.org/licenses/by/4.0
The origin of the Fine Structure Constant 137
This document lays the foundation for a new physical architecture that resolves the deepest mystery of contemporary science: the origin and significance of the Fine Structure Constant (1/137). What the reader will find in this article is the culmination of a century of research, achieved through a break with established dogmas and an unprecedented unification of thermodynamics, relativity, and quantum mechanics.
Copyright (c) 2026 Alex A Pavon L. (Autor/a) https://creativecommons.org/licenses/by/4.0
Scientific metaphors in Social Sciences: An essay on conceptual migration
The essay under consideration addresses the discussion of conceptual migrations and scientific metaphors in the production of social knowledge.In order to do so, it presents certain elements of the production of social scientific knowledge itself, in its intertwining with the scientific revolution and the positive philosophy that explains it. It then goes on to present the contributions of metaphors in overcoming positive philosophy in two complementary ways. Firstly, a concise examination of structuralist constructivism as outlined in the text “El Oficio del Sociólogo” is undertaken. Secondly, a contemplation on the significance of metaphors in accordance with intricate cognitive processes and their elucidation of social phenomena is provided. The objective of this reflection is to contribute to the ongoing discourse on the reinterpretation of critical thinking’s contributions to transformative pedagogy, as founded on the theory of complexity.
Copyright (c) 2026 Ernesto Mirt Alvarado (Autor/a) https://creativecommons.org/licenses/by-nc-sa/4.0
Quantum tunneling in synaptic enzymes as a source of genuine neural variability
We propose that thermally assisted proton tunneling in presynaptic enzymes contributes measurably to synaptic variability, producing a kinetic isotope effect (KIE) distinguishable from classical thermal noise. H→D isotope substitution in neuronal cultures should reduce the interspike interval coefficient of variation (ISI CV) by a KIE_network factor in the range of 1.5–3.5×, with a modal estimate of ~2.5×, under conditions where pure thermal noise predicts KIE ≈ 1. The prediction rests on: (1) documented proton tunneling in enzymes with KIE up to 100×; (2) a PCET-mediated vesicular fusion model; and (3) experimental evidence that heavy water modulates hippocampal synaptic transmission. The hypothesis does not require macroscopic quantum coherence or novel physics. The falsification threshold is explicit: KIE_red < 1.5× under controlled conditions with sufficient statistical power would refute the hypothesis in its current formulation.
Copyright (c) 2026 Julián Collados (Autor/a) https://creativecommons.org/licenses/by/4.0
Contemporary evidence-based techniques for the conservative treatment of medial tibial periostitis: an integrative review of the state of the art
Medial tibial periostitis is one of the most prevalent overuse injuries in runners and athletes exposed to repetitive impact loads. This paper presents an integrative review of the state of the art regarding contemporary physiotherapy techniques for the conservative treatment of this clinical condition. Strategies based on load management, progressive strengthening, biomechanical rehabilitation, neuromuscular training, manual therapy, extracorporeal shockwave therapy, and functional monitoring technologies were analyzed. Recent evidence suggests that individualized multimodal programs show better clinical outcomes than purely passive interventions.
Copyright (c) 2026 Mariete Trapezoide (Autor/a) https://creativecommons.org/licenses/by/4.0
Between protocol and judgment: physiotherapy education as a field of epistemic dispute
Background: Physiotherapy education in Chile takes place within disciplinary inequalities, institutional heterogeneity, and territorial gaps that affect the teaching of professional reasoning, a key competence for clinical autonomy. Biomedical dominance, protocol-driven cultures, and fragmented curricula have made reasoning an implicit rather than explicit learning objective, producing unequal training trajectories. Objective: To understand the barriers, challenges, and opportunities in learning professional reasoning in physiotherapy, considering inequalities in training quality, territorial context, and institutional type, through the voices of academic leaders. Methods: A qualitative interpretive study based on Grounded Theory. In-depth interviews were conducted with four leaders from three types of institutions in southern Chile: a regionally oriented private university (UPVR1), a public traditional university (UTE2), and a publicly oriented private university (UPVP3). Data were analyzed using constant comparison and open, axial, and selective coding until theoretical saturation. Results: The central phenomenon was professional reasoning as a “declared core but pedagogically fragile” element of training. Main barriers included biomedical dominance, protocol culture, the academia–clinical gap, and unequal student trajectories. Strengths were linked to role-modeling teachers, student diversity, and situated learning experiences. Discussion and conclusions: Inequities in learning professional reasoning reflect an unequal distribution of epistemic agency. Achieving equity requires explicitly embedding professional reasoning in curricula, strengthening teaching practices, and recognizing physiotherapy’s disciplinary object as the basis for autonomous and socially responsive practice.
Copyright (c) 2026 Máximo Escobar Cabello (Autor/a) https://creativecommons.org/licenses/by/4.0
Frequency of pathologies related to kinesiology and physiotherapy suffered by older adults, year 2022.
This study aims to identify the frequency of pathologies found in the physiotherapy records of elderly patients who attended the physiotherapy service provided by the Años Dorados Foundation in the city of Ñemby. The results obtained will allow for future research and projects focused on the well-being of older adults. A quantitative, cross-sectional, descriptive, non-experimental study was conducted. Seventy-eight physiotherapy records of elderly adults were examined. The results show that the most common pathologies in this sample were neuropathies and radiculopathies.
Copyright (c) 2026 Pedro Rejala (Autor/a) https://creativecommons.org/licenses/by/4.0
Ethnobotany in Santiago Nejapilla, Oaxaca: biocultural knowledge at risk
Oaxaca is one of the most biodiverse states in Mexico and is home to 16 ethnic groups, demonstrating the richness of its biocultural heritage. Understanding the uses of plants is essential to ensuring food security, health, and ecological balance. Therefore, this study sought to document the plant species that the community of Santiago Nejapilla has historically used and conserved. Five field trips were conducted during different seasons (April 2022 to March 2024). Botanical collections were made, and semi-structured interviews were conducted with community members. The results were analyzed by calculating use value indices and performing cluster analysis. A total of 109 useful plant species were recorded, 35 of which are endemic to Mexico (32.11%). The most relevant families were Asteraceae, Bromeliaceae, and Fagaceae. The main reported uses were forage, food, medicinal, and ornamental. The genera with the greatest cultural significance were Tillandsia and Quercus. The most frequently treated ailments are related to the digestive system; however, those associated with cultural practices, such as cleansing rituals and curses, remain part of the community's daily life. Given the significant number of endemic and endangered species, the management and conservation of biodiversity in the region is a priority. Cluster analysis revealed that the population shares collective knowledge about the use of plants; however, the transmission of this knowledge is at risk due to ecological and social factors: ongoing migration, loss of the native language, and limited promotion of traditional knowledge.
Copyright (c) 2026 Ana María Soriano Martínez, M. en C. Héctor Serrano Casas, Bióloga Araceli Celia Tejero Gervacio (Autor/a) https://creativecommons.org/licenses/by-nc-nd/4.0
This study presents the numerical simulation of thermoacoustic (TA) wave propagation in time domain using the Finite Difference Time Domain (FDTD) method, along with a comparative analysis against the k-Space pseudospectral method (k-Wave). A physically realistic thermoacoustic source is modeled using a Gaussian initial pressure distribution, and the resulting pressure signals are recorded using a point sensor. The numerical results obtained from both methods show excellent agreement for different grid resolutions when a fixed Courant-Friedrichs-Lewy (CFL) number is maintained. However, discrepancies arise when different CFL numbers are used for varying grid resolutions, leading to mismatched signal responses. Further investigations are conducted using various realistic source configurations, including circular (disk), Chebyshev polynomial based ($1^{st}$ order), and asymmetric (rock-like) shapes. The corresponding time domain signals and frequency spectra are analyzed using both FDTD and k-space methods. It is observed that the two methods exhibit strong agreement in the low frequency regime, while noticeable deviations occur at higher frequencies. Further the study highlights the limitations associated with binary image based sources. Sharpe discontinuities at the edges introduces non-physical high frequency components, resulting in spurious oscillations and degraded signal quality. A multi sensor configuration is utilized to analyze the signals at different locations.
Copyright (c) 2026 Ujjal Mandal (Autor/a) https://creativecommons.org/licenses/by/4.0
Physical fitness, body composition and quality of life in first-year medical sciences students
Physical fitness and body composition are key determinants of health and quality of life, and in medical students they also influence their future role as promoters of healthy habits. In Cuba, their actual status at the beginning of university education is unknown. This cross-sectional descriptive study characterized the level of basic physical abilities and the anthropometric profile of first-year students entering Medical Sciences programs, analyzing their distribution, correlations, and territorial differences. A total of 8116 first-year students (58.9 % male) from four provinces participated. Standardized physical tests (800 m, 60 m, push-ups, sit-ups) were applied, and body mass index (BMI) and waist circumference (WC) were measured. Only 9.2 % achieved the Talent category, with arm strength being the most deficient ability (11.5 % in level V). Mean BMI was 25.8 kg/m² (SD=3.5), and 14.5 % presented abdominal obesity. Correlations between BMI/WC and physical performance were moderate (r between 0.29 and 0.51; p<0.001). A total of 24.1 % showed high metabolic risk. According to functional health criteria, 36.7 % had insufficient arm strength and 32.2 % had insufficient abdominal strength. Cluster analysis identified three profiles: healthy (38.2 %), moderate risk (41.5 %), and high risk (20.3 %), with significant interprovincial differences (p<0.001). It is concluded that a low-to-medium physical condition predominates, one in three students is overweight, one in four has high metabolic risk, and significant territorial gaps exist, highlighting the need for early curricular interventions.
Copyright (c) 2026 Elmys Ramírez González (Autor/a) https://creativecommons.org/licenses/by-nc-nd/4.0
Emergent gravitational effects from the transformation between inertial and non-inertial frames in the observation of a photon
It is investigated a theoretical framework in which gravitational phenomena arise from the transformation between an inertial reference frame and a non-inertial frame used to observe photon dynamics. Starting from a photon action modified by one kinematic factor associated with the velocity and acceleration of the observer, I derive an effective spacetime metric and the corresponding geodesic equations. The curvature tensor and Einstein tensor of the ressulting geometry are calculated explicitly. The weak-field limit is analyzed and compared with Newtonian gravity and General Relativity. Predictions for galaxy rotation curves, cosmological expansion, gravitational lensing, photon spheres around compact objects, and solar-system test are discussed. Possible observational consequences are examined.
Copyright (c) 2026 Vicente Cotrino Bautista (Autor/a) https://creativecommons.org/licenses/by/4.0
Emergent gravitational dynamics from a photon action with an effective refractive index
I investigate a gravitational framework derived from a variational principle applied to the action of a photon observed from a non-inertial reference frame. We define an effective refractive index associated with the gravitational field. The resulting photon trajectories correspond to geodesic of an effective optical metric. In the weak-field limit the theory predicts a modified gravitational potential that can explain the flat galactic rotation curves without dark matter. At cosmological scales the model generates an effective gravitational energy density that lead to acelerated cosmic expansion without introducing a cosmological constant. Possible observational consequences are discussed
Clinical factors associated with diagnosis or suspicion of ASD in children from southern Chile
Introduction: Autism Spectrum Disorder (ASD) is a neurodevelopmental condition with increasing prevalence and clinical heterogeneity. Identifying risk factors associated with confirmed or suspected ASD diagnosis is crucial for early detection and intervention, particularly in local clinical settings with limited resources. Objective: This study aimed to determine the sociodemographic, perinatal, and clinical factors that influence the probability of presenting a suspected or confirmed ASD diagnosis in a pediatric clinical sample attended between 2019 and 2024 at a university clinic in the Araucanía Region, Chile. Materials and methods: A total of 271 clinical records were analyzed using descriptive statistics, comparative analyses, and binary logistic regression. Results. Showed that the only statistically significant predictor was the presence of neurodevelopmental disorders (OR = 3.58; p = 0.006). Variables such as sex, parental age, and perinatal conditions showed no significant associations. Conclusion. These findings underscore the clinical value of neurodevelopmental disorders as early warning indicators for ASD and support their inclusion in diagnostic alert protocol s. It is concluded that comorbidities offer higher predictive value than perinatal factors in clinical phonoaudiological and neurodevelopmental settings. The implementation of early screening protocols based on clinical profiles is recommended to improve diagnostic timing and access to interventions.
Copyright (c) 2026 Sanhueza Salazar Diego, Leonardo Lagos Gutiérrez, Pantoja Silva Verónica (Autor/a) https://creativecommons.org/licenses/by/4.0
The given, language, and knowledge. A critical reading of Wilfrid Sellars
This essay examines Wilfrid Sellars’s critique of the “myth of the given” in empiricism, arguing that all knowledge—including perceptual knowledge—is mediated by a conceptual‑linguistic network. Drawing on Empiricism and the Philosophy of Mind (1971), the paper shows that Sellars’s distinction between “seeing that something is the case” and merely “seeing something” entails that experience is never pure but always situated within a “space of reasons.” This article explores parallels between this view and the Sapir‑Whorf hypothesis, as well as Kuhn’s notion of paradigm, highlighting how theoretical frameworks shape both scientific observation and everyday perception. Ontological and methodological implications of denying “pure” data are discussed, pointing out tensions concerning non‑discursive forms of knowledge (animals, infants, practical know‑how). Finally, a broadened reading is proposed that acknowledges the normative and social dimension of knowledge while still recognizing situated, embodied, and affective ways of knowing.
Copyright (c) 2026 Alfredo Montero Fonseca (Autor/a) https://creativecommons.org/licenses/by/4.0
Manual for the preparation of the graduation portfolio
Due to the need to guide students and faculty in the Bachelor of Primary Education and Bachelor of Preschool Education programs at the University of Las Tunas in the design, selection, development, improvement, and presentation of portfolios as a means of culminating their studies, a review and analysis of research related to portfolios as an assessment tool was conducted, along with professional discussions and a methodological and scientific study at the departmental and program levels. This effort aimed to address this need, leading to the development of a manual with methodological and practical guidelines, which is included in this article. This manual establishes the rationale for using the portfolio as a culminating document, identifies the necessary elements for its application, and presents, in a didactic and detailed manner, the phases established for its implementation. These phases take into account the general objectives of the professional model, the work that will be presented as evidence of the degree of fulfillment of these objectives, and the professional problems that the portfolio aims to address.
Copyright (c) 2026 MSc. Pedro Pablo Nápoles Cruz , DrC. Ada Iris Nápoles Cruz , MSc. Mireisys Perdomo Thompson , Lic. Yeranis Díaz Acosta (Autor/a) https://creativecommons.org/licenses/by/4.0
Quantification of greenhouse gas emissions from the 2024 wildfire in Cocó State Park using remote sensing
Urban mangroves constitute strategic Blue Carbon ecosystems, playing a relevant role in climate change mitigation. However, when disturbed by wildfires, these environments can rapidly shift from carbon sinks to sources of greenhouse gas (GHG) emissions. This study aimed to estimate GHG emissions associated with the 2024 fire event in Cocó State Park (PEC), Fortaleza, Brazil. The methodology integrated high-resolution remote sensing data (PlanetScope, 3 m) to delineate the burned area and stratify fire severity, combined with the equations proposed by the IPCC guidelines. Emissions of CO₂, CH₄, N₂O, CO, and NOx were calculated based on burned area, biomass load, combustion factors, and emission factors specific to mangrove forests and other vegetation types. The results indicate that the fire resulted in a total release of 507.5 t of CO₂, with the “Other Vegetation” class accounting for approximately 60% of total emissions due to the high combustion efficiency of dry biomass. In contrast, mangrove areas exhibited a higher relative contribution of methane (CH₄), associated with incomplete combustion processes. Moderate fire severity accounted for approximately 87% of total emissions, highlighting that the spatial extent of burned areas was the primary driver of climatic impact. It is concluded that the integration of high-resolution remote sensing and ecosystem-specific biophysical parameters is essential for accurate GHG inventories in urban coastal ecosystems, providing robust technical support for preventive fire management and the protection of Blue Carbon stocks.
Copyright (c) 2026 Mauricio Alejandro Perea Ardila (Autor/a) https://creativecommons.org/licenses/by/4.0
Where, who, and how International Book Day (2024) Was Celebrated in the Department of Nariño, Colombia
This document emerges as a contribution to the diagnostic phase of the development of the Departmental Plan for Orality, Reading, Writing, and Spaces (OLEE Plan) of the department of Nariño (Colombia). It aims to disseminate and analyze, from the perspective of cultural management and territorial realities, the results of the mapping of initiatives related to the promotion of orality, reading, and writing, carried out on April 23, 2024, during the celebration of International Book Day, in 37 of the 64 municipalities of Nariño. The nature of the actors involved in the initiatives developed, the roles played by women within these initiatives, the contribution of public libraries, articulation actions, coverage in rural contexts, and sources of funding are among the themes through which this document proposes reflections, analyses, and recommendations. These seek to contribute to the construction of the OLEE Plan and to future research on cultural policies, library and information science, and cultural governance in regions with characteristics similar to those of the department of Nariño.
Copyright (c) 2026 Vladimir Hernández Botina (Autor/a) https://creativecommons.org/licenses/by-nc-sa/4.0
Emotionality and critical citizenship: Evidence from engineering students
This research explores the relationship between emotion and critical thinking in 144 first-year students at a technological institute in Yucatán, Mexico. Through a validated questionnaire featuring four digital dilemmas, 576 brief narratives were collected. Mixed analysis (descriptive counting and open-axial-selective qualitative coding) revealed that 75% of initial reactions were affective. Three narrative cores dominated: moral outrage (36.1%), critical curiosity (43.1%), and reflective empathy (20.8%). Upon introducing dissonant sources, nearly half of the responses shifted from an Uncritical-Uncritical pattern to an Uncritical-Critical one, suggesting that outrage can serve as a cognitive lever if the classroom provides contrasting inputs. The findings support the relevance of incorporating metacognitive pauses as a pedagogical practice that slows down the attention economy and fosters reflective digital citizenship. Socio-critical and humanistic implications for curricula are discussed, as well as inherent limitations related to convenience sampling and the need to extend longitudinal follow-up (T₁–T₄) to contexts with precarious connectivity. Finally, it is proposed that literacy is not only about teaching how to “navigate” the web but how to breathe within it: managing the emotional spark so that the fire of judgment illuminates without consuming.
Copyright (c) 2026 Jesús Francis Martínez Ortega, Elvira del Carmen May Dorantes, Alma Patricia Aguilar Novelo (Autor/a) https://creativecommons.org/licenses/by/4.0
Estimating blue carbon potential in Cocó state park: An approach using remote sensing products
In the context of the climate emergency, urban mangroves constitute strategic ecosystems for climate change mitigation, although their management is constrained by the scarcity of quantitative data on their carbon stocks. This study estimates the Blue Carbon potential and the spatial distribution of carbon stocks in the Cocó State Park (PEC), Fortaleza, Brazil, over the period 2010–2022. To this end, we employed geoprocessing techniques and integrated global-scale remote sensing products from the ESA Climate Change Initiative (ESA CCI) with regional datasets from MapBiomas (considering the soil layer down to 30 cm depth), in order to quantify biomass and soil organic carbon (SOC). The results reveal that the PEC mangroves functioned as an active carbon sink, with an 11.3% increase in areal extent and a 21.5% increase in total carbon stock, rising from 45,988.9 MgC in 2010 to 55,871.9 MgC in 2022. The edaphic component represented the dominant reservoir, accounting for 69.5% of the total stock and exhibiting high temporal stability. Spatial analysis identified a functional duality, with a dynamic western sector characterized by greater biomass gains, and an eastern sector acting as a stable SOC reservoir. With a storage capacity of up to 205,049.8 Mg of CO₂ equivalent by the end of the study period, the park's resilience to urban pressure is confirmed, providing a fundamental quantitative baseline for Nationally Determined Contributions (NDCs) and climate finance strategies.
The appropriation of pop culture in popular movements of struggle and the emergence of a revolutionary aesthetics
Faced with an aesthetic paradigm that aligns with and perpetuates the hegemonic social order, based on economic, social, and political exploitation, we argue for the need to construct a new revolutionary aesthetic. In contemporary movements of popular struggle, we observe representations and graphic creations that suggest the first steps toward this new aesthetic are already underway. The aim is to determine whether the appropriation of pop culture in the graphic expressions of contemporary popular movements of struggle represents the initial steps toward a new aesthetic relationship of a revolutionary nature. The research design is qualitative, inductive, and based on case studies. The cases of Chile, Colombia, Nepal, and the Faculty of Engineering of UNAM, Mexico, were analyzed. The findings indicate that contemporary movements of popular struggle exhibit characteristics that point to the emergence of a revolutionary aesthetic project.
Copyright (c) 2026 Héctor Ulises Chiñas Aguilar (Autor/a) https://creativecommons.org/licenses/by/4.0
Integration of finite element analysis (FEA) in the design of critical mechanical components to improve occupational safety
Finite Element Analysis (FEA) has become a fundamental tool in the design of mechanical components, especially those considered critical within industrial environments. This article aims to explore the integration of FEA into the mechanical design process as a strategy to enhance occupational safety. To this end, an exhaustive review of specialized scientific literature was conducted, focusing on recent studies related to simulation-assisted design, structural analysis, and mechanical failure prevention.The results show that the application of FEA makes it possible to identify stress concentration zones, deformations, and potential failures prior to manufacturing, thereby reducing occupational risks and operational costs. Finally, it is concluded that the incorporation of FEA into mechanical design significantly contributes to the improvement of occupational safety and the optimization of industrial processes.Furthermore, the study highlights that the use of FEA impacts not only the design phase but also the validation, maintenance, and continuous improvement stages of industrial equipment. By simulating different loading, temperature, and pressure conditions, it is possible to evaluate the mechanical behavior of components under real operating scenarios, which facilitates informed decision-making and reduces dependence on costly and potentially hazardous physical testing.Likewise, the integration of FEA with Computer-Aided Design (CAD) and Computer-Aided Manufacturing (CAM) tools promotes a comprehensive product life cycle approach, increasing structural reliability and productive efficiency.
Copyright (c) 2026 Alanis Monserrate Apolo Peralta (Autor/a) https://creativecommons.org/licenses/by/4.0
Information and communication technologies uses and the relationship with obesity in Cuban youth
The study analyzes the influence of Information and Communication Technologies (ICTSs) use on the increase of overweight and obesity in Cuban youth. A systematic review following PRISMA guidelines and descriptive statistical analysis of physical fitness assessments in 176 youth were conducted. Results show that 24% of the Cuban population presents obesity (2024). In physical fitness, only 38.64% passed the evaluations, with 61.36% in "Poor" category. Descriptive analysis reveals low performance in general endurance (mean=3.12/5) and arm strength (mean=25.87 repetitions). It is concluded that ICTSs constitute an emerging obesogenic factor that interacts with social, economic and cultural determinants, requiring multisectoral strategies to counteract their negative effects.
Copyright (c) 2026 Elmys Ramírez González, Yskra Monte de Oca Escalona (Autor/a) https://creativecommons.org/licenses/by/4.0
Acute exacerbation of superinfected EPOC in elderly patients with multiple comorbidities
Introduction: Chronic obstructive pulmonary disease (COPD) is a chronic respiratory condition with high prevalence and significant mortality. It predominantly affects older adults with multiple comorbidities. Acute exacerbations, usually of infectious origin, represent a major cause of hospitalization and functional decline. Methods: We report the case of an 80-year-old male patient with a history of COPD, chronic ischemic heart disease, arterial hypertension, and former smoker, who was admitted to the Dr. Bolívar Argüello Geriatric Hospital due to progressive dyspnea, productive cough, and oxygen desaturation. A comprehensive clinical assessment was performed, including laboratory tests, arterial blood gas analysis, serial electrocardiograms, and chest radiography. Discusión: Findings revealed hypoxemia, elevated C-reactive protein levels, secondary polycythemia, mild thrombocytopenia, and urinalysis compatible with urinary tract infection. Chest radiography showed pulmonary hyperinflation and increased bronchovascular markings. Electrocardiograms demonstrated conduction abnormalities suggestive of trifascicular block. Based on these findings, a diagnosis of acute infective exacerbation of COPD was established. The patient was treated with broad-spectrum antibiotics, inhaled bronchodilators, mucolytics, oxygen therapy, and prophylactic anticoagulation, achieving a favorable clinical outcome. Conclusion: Acute exacerbations of COPD in geriatric patients with multiple comorbidities require a comprehensive and multidisciplinary approach. Timely management allowed clinical stabilization and contributed to a favorable outcome during the current acute hospitalization.
Copyright (c) 2026 Aarón Tubón (Autor/a) https://creativecommons.org/licenses/by-nc-sa/4.0
Technical-economic analysis of equivalent photovoltaic configurations of microinverters: Case study at the SENA Pedregal photovoltaic park, Medellín
The efficiency of electrical power generation in photovoltaic systems is a critical aspect that can be affected by various factors such as weather conditions, technical specifications of components, and infrastructure configurations. In this study, we focused on analyzing the impact on generation efficiency between two equivalent photovoltaic configurations, which differ in the use of two types of microinverters (MIs) from the same manufacturer, but with different nominal power characteristics and analyzed the economics implementation factor to determine which configuration maximizes the return on investment (ROI). This research was carried out at the SENA photovoltaic park, located in Medellín. For this study, the energy generation data from both configurations were utilized. This information was supplemented with irradiance data for the same 8-month period from SIATA. The results obtained, under identical environmental conditions, indicate that the D1 configuration, equipped with 600 W MIs, is on average 55.1% more efficient in converting irradiated solar energy into electrical power. This resulted in an average 53.7% increase in electricity production compared to the D2 system, which employs 1200 W Mis. In economic terms, the D1 600 W configuration entails a 34% higher initial investment compared to D2. However, this investment is amortized within an estimated 17-month period due to its superior energy efficiency, thereby enhancing the photovoltaic system's cost-benefit ratio.
Copyright (c) 2026 David A. Calle-Bedoya, Diego A. Villa-Rodas, Francisco J. Vélez-Hoyos, Victor H Aristizabal-Tique (Autor/a) https://creativecommons.org/licenses/by/4.0
The state of neurological physiotherapy in Spain: a national survey
Introduction: Despite recent advances in neurorehabilitation and neurological physiotherapy, uncertainty remains regarding the practical application of different interventions. The objective was to determine the sociodemographic and professional characteristics of neurological physiotherapists in Spain and their relationship to the application of different therapeutic options. Methods: A national survey was conducted, consisting of 14 closed-ended questions that collected sociodemographic information, academic and professional profile, and use of different interventions. Participants responded anonymously. Data from 849 respondents were analyzed, exploring the association between different professional characteristics and the use of interventions. Results: The majority were women (75.27%), with a predominant age range of 21–40 years. Territorial representation was uneven across regions. 73.62% were exclusively dedicated to clinical practice, and the majority lacked experience or training in research (60–65%). The highest level of academic achievement was comparable among continuing education, postgraduate programs, and official master's degrees. The most frequently used intervention was therapeutic exercise/motor control (85.75%), followed by the Bobath concept (66.55%). Differences were found in the use of various interventions according to academic training, healthcare system, and work experience. Conclusions: Neurological physiotherapists in Spain are predominantly young women dedicated exclusively to clinical practice. Differences exist in the use of therapeutic interventions between public and private healthcare systems and among different levels of postgraduate training or work experience, which likely influences the quality of care.
Copyright (c) 2026 Selma Peláez Hervás, Alfredo Lerín Calvo, Carlos Rodríguez López, Ismael Sanz Esteban, Marcos Moreno Verdú (Autor/a) https://creativecommons.org/licenses/by/4.0