Multidisciplinar (Montevideo) (Journal)
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Relationship between the use of ChatGPT in academic activities and the development of communication skills in university students
No full textThis study explored the relationship between ChatGPT use and the development of communication competencies among 370 Communication students in Ecuador. Using a quantitative, correlational, and cross-sectional approach, a validated questionnaire measured frequency of use and perceived impact on expressive skills. Results indicated a strong and significant correlation (r = 0.79), suggesting that strategic ChatGPT usage enhances discourse organization, argumentation, and communicative clarity. Descriptive statistics revealed high student appreciation for its utility in structuring ideas and resolving complex topics. While variations in communicative impact were observed, findings underscore the formative value of generative AI when used reflectively. The study recommends pedagogical and ethical frameworks to guide its responsible integration in higher education, fostering critical thinking and holistic development. These results offer empirical support for institutional policies and future research on the role of AI in shaping professional competencies in academic environments
Development of a website for the National Student Scientific Group
No full textIntroduction: the National Student Scientific Group of the University Student Federation of Cuba promotes scientific and technological development among university students. It organizes projects, academic events, and facilitates the publication of research.Objective: to describe the construction of a website for the National Student Scientific Group.Methods: a technological innovation development study to design an educational website, using computer tools and methodological research in technological production. The process was divided into two phases: the creation of the site and the design of the interface and content insertion.Results: the website was developed, accessible via computers, tablets, and cell phones, about the National Student Scientific Group.Conclusion: the development of the website for the National Student Scientific Group has proven to be a valuable initiative for the promotion and dissemination of scientific activities within our universities
Mechanical power and mortality: analysis of a prospective cohort of ventilated patients
Full text linkIntroduction: Mechanical power establishes the amount of energy per unit time transferred from the ventilator to the respiratory system. Its usefulness as a predictor of death has been demonstrated in COVID-19 or acute respiratory distress syndrome. However, its prognostic value in ventilated patients without these conditions is unknown. Objective: to determine the association of mechanical power with the incidence of mortality in patients with invasive artificial ventilation in the Intensive Care Unit. Methods: a prospective cohort study in 52 patients ventilated invasively in an Intensive Care Unit of a Cuban hospital. The final variable of interest was mortality. Sociodemographic and ventilatory variables were studied. The level of significance was found according to p value ≤ 0.05 through hypothesis testing of differences in means and proportions and the the area under the ROC curve. Results: mortality predominated in female patients, with a mean age of 51.76 ± 21.76 years. The main causes of ventilation were respiratory. High APACHE II score, SOFA and a mean mechanical power value of 14.82 ± 1.67 J/min were associated with mortality. On analysis of the area under the ROC curve, mechanical power yielded adequate discriminative ability for mortality (AROC: 0.993; 95 % CI: 0.979 - 1; p = 0.000). Conclusions: In this series of ventilated patients the mechanical power value proved to be a factor associated with mortality
Impact of internal combustion engine overheating on lubricating oil degradation
Full text linkIntroduction: overheating of an internal combustion engine in the operation of radiators, coolant conductors and water conductors is highly relevant at the present time.Objective: to characterize aspects related to the overheating of the internal combustion engine.Method: a review of the available bibliography in databases such as SciELO, Scopus and ClinicalKey was carried out, from which a total of 11 related articles were consulted, empirical methods such as logical history and analysis and synthesis were used.Results: the growing concern about climate change and the adoption of increasingly strict policies on greenhouse gas emissions. The overheating of internal combustion engines is very relevant in research and technological innovation. The overheating of an internal combustion engine is a common problem that can cause deterioration of the lubricating oil. It is very important that the engine works at the correct temperatureConclusions: overheating of the combustion engine is a problem that, in order to avoid it, factors such as the correct temperature, the cooling system and the type of oil used must be taken into account, which allows its consequences on the correct operation of the engin
Current perspectives in the diagnosis and management of bacterial meningitis. Literature review and update
Full text linkIntroduction: Bacterial meningitis is a serious and potentially fatal disease that has represented a significant challenge to medicine since its identification in the 19th century. Despite advances in antimicrobial treatment, it remains a major cause of morbidity and mortality worldwide. This review aims to update current perspectives on the diagnosis and management of bacterial meningitis, focusing on its pathogenesis, clinical manifestations, diagnostic methods, and therapeutic strategies. Methods: A search for information was carried out in the period August-December 2024 in the SciELO, LILACS, Scopus, PubMed-MedLine databases, the Google Scholar search engine, as well as in the ClinicalKeys services. For the recovery of information, an advanced search strategy was used and the terms “meningitis or bacterial meningitis” were used, as well as their translations into the English language. To combine the terms, Boolean operators were used, with search formulas according to the syntax requested by each database. Furthermore, in order to achieve a review based on the best possible evidence, only studies of the type case series, original articles or systematic reviews were selected. Results and discussion: Bacterial meningitis develops when pathogens overcome the host\u27s defense mechanisms, colonizing mucous membranes, invading the bloodstream and penetrating the subarachnoid space. The main pathogens include Streptococcus pneumoniae, Neisseria meningitidis and Haemophilus influenzae. The most common clinical manifestations are fever, headache, stiff neck and altered mental status. Diagnosis is based on analysis of cerebrospinal fluid (CSF), which shows pleocytosis, increased protein and decreased glucose. Empirical treatment includes antibiotics such as cefotaxime, ceftriaxone and vancomycin, together with dexamethasone as adjuvant therapy to reduce inflammation. Conclusions: Bacterial meningitis is a serious infection of the central nervous system, a medical emergency whose mortality and sequelae can be reduced with timely diagnosis and treatment. The key is to start treatment immediately and without delay. Prevention is the cornerstone of its control. Only through multidisciplinary management, which could include an expert infectious disease specialist, an intensive care physician, a specialized nurse and adequate laboratory equipment, can the impact of this devastating disease be mitigated
Analysis of engine overheating in the Mazda BT-50 model. Perspectives from automotive mechanics experts
Full text linkEngine overheating in the Mazda BT-50 affects its performance, durability and sustainability, directly influencing the degradation of the lubricating oil and cooling system. This study analyzed the causes, consequences and solutions to the problem, based on structured interviews with experts in automotive mechanics. The results revealed that radiator, thermostat and water pump failures are the main causes of overheating. These failures, along with non-compliance with maintenance practices, aggravate the risks of severe engine damage. The experts recommended maintaining a temperature range between 92 and 98°C and performing preventive maintenance, including radiator flushing, periodic coolant change and replacement of key components at regular intervals. The study concludes that overheating can be prevented through a comprehensive approach that combines robust design, rigorous maintenance and user education. This not only improves efficiency and extends engine life, but also reduces repair costs and promotes more sustainable practices in the automotive industr
Socio Scientific Issue Approach to Enhance Critical Thinking Skills: A Prisma Systematic Literature Review
Full text linkThe purpose of this project is to explore the Social Scientific Issues (SSI) method to enhance students’ critical thinking skills. The Preferred Reporting Items for Systematic Reviews and Meta-analyses (PRISMA) served as the basis for a systematic literature review, which aimed to determine how SSI and the development of critical thinking skills are related. SSI is a cutting-edge educational program that links social issues, science, and decision-making. The capacity to study, evaluate, and understand data in a comprehensive, impartial, and methodical manner is known as critical thinking. A learning environment that is appropriate to the cultural and environmental context of students can be built using the SSI method. This research review suggests that the SSI approach can help students develop their critical thinking skills by engaging them in solving environmental problems and hot topics. Students’ understanding of the relationship between science and society is also expanded when they become aware of existing environmental issues. The findings of this literature review demonstrate the value of SSI-based learning strategies in preparing students to become critical, analytical, and creative thinkers who can address complex problems in the industrial age 5.
Bi-directional AI Framework for Differentiate Psychiatric Disorders and Predicting Symptoms from Drug-Induced Neurotoxicity
Full text linkIntroduction: Diagnosis of mental disorders such as schizophrenia, bipolar disorder, and borderline personality disorder is complicated by the similarity of symptoms, especially in the early stages. The situation becomes even more complicated in the presence of psychoneurological symptoms caused by toxic effects of substances that mimic mental illnesses. There is a need for an intelligent system that can distinguish between these conditions and predict the dynamics of symptoms.Methods: A bidirectional artificial intelligence model was developed, consisting of two modules: a diagnostic classifier (based on XGBoost, LightGBM, CNN) and a prognostic module (based on LSTM/GRU or transformers). Open synthetic and toxicological datasets were used. The model was trained in direct (symptom prediction) and reverse (determination of etiology based on the current state) modes. Efficiency was assessed by classification (accuracy, F1-score, ROC-AUC) and prognostic (MAE, RMSE) metrics.Results: XGBoost demonstrated the highest accuracy (91.2%) in diagnostic classification. The predictive module provided consistently low MAE values when predicting symptoms over a 7- to 30-day horizon. In the inverse analysis mode, the model distinguished endogenous and exogenous symptoms with high probability, especially in cases related to hallucinogens and drug-induced affective lability.Conclusions: The developed AI model demonstrates high accuracy in distinguishing mental disorders from toxic-induced conditions, as well as in predicting symptoms. Its implementation can significantly improve diagnostics and monitoring in psychiatric and toxicological practice, especially with limited clinical information or in outpatient settings
Analysis of the use of waste cooking oil as an alternative fuel
Full text linkThis paper analyzes the use of used cooking oil as a sustainable alternative for biodiesel production, highlighting its potential to reduce dependence on fossil fuels and mitigate environmental problems. Used cooking oil, abundant and inexpensive, offers a solution for waste management by aligning with the principles of the circular economy. Through methods such as transesterification, biodiesel derived from used cooking oil shows advantages such as biodegradability and lower greenhouse gas emissions, although it presents challenges such as high viscosity and nitrogen oxide emissions. The study reviews research that employs additives and advanced technologies to improve biodiesel properties and engine performance. Strategies such as blending with other fuels and incorporating nanoparticles have been shown to optimize thermal efficiency and reduce pollutant emissions. Despite its limitations, biodiesel from used cooking oil represents a technically and environmentally viable alternative, especially if support policies and improvements in its production are implemented. Used cooking oil is a promising feedstock for moving towards a sustainable energy transition, with significant benefits in waste management and reduction of the environmental footprin
Design of Science E-Modules Based on Guided Inquiry to Improve Science Literacy Using Canva and Heyzine
Full text linkIntroduction: the development of guided inquiry-based e-modules emphasizes the need for relevant and interesting materials to improve students\u27 scientific literacy. Methods: a descriptive qualitative method was used, applying a guided inquiry approach to create engaging and relevant materials to improve science literacy. The e-module prototype was developed using Canva and Hayzine, chosen for its interactive and easy-to-use features. Results: the feasibility of the guided inquiry-based science e-module was evaluated by expert validators specializing in educational media and science education content. Key aspects such as readability, interactivity, and curriculum alignment were assessed. The findings confirmed that the prototype met the standards required for effective teaching materials and showed significant potential to improve elementary science education.Conclusion: the study showed that integrating the Guided Inquiry approach with Canva and Hayzine created an engaging and culturally relevant e-module. This resource effectively supports better science education by increasing student engagement and science literacy skills