Journal of Hunan University Natural Sciences

Human parvovirus B19 (B19) is a pathogen that primarily infects erythroid and other cell types due to its binding to the P globoside antigen. The seroprevalence of anti-B19 IgG varies with age, ranging from 2-15% in children to over 85% in older adults. B19 can cause a wide range of clinical manifestations, including erythema infectiosum (fifth disease) in children and pure red cell aplasia in immunocompromised individuals, particularly those with HIV, oncology or autoimmune diseases. The aim of this study was to determine the seroprevalence of IgM, IgG, and IgG avidity against B19 in immunocompromised patients hospitalized in two health institutions in Valle del Cauca, Colombia. A total of 104 immunocompromised patients hospitalized in intensive care units at two institutions in Valle del Cauca, Colombia, were enrolled in this study. Blood samples were collected and analyzed by immunoassay to determine the seroprevalence of IgM, IgG, and IgG avidity specific for B19. Statistical analysis was performed to assess the relationship between B19 seroprevalence and variables such as age, chronic non-communicable diseases, acquired immunodeficiencies, and severe anemic syndrome. The study showed a seroprevalence of 66.35% for IgG anti-B19 in immunocompromised patients. A statistically significant correlation was found between B19 seroprevalence and the presence of chronic non-communicable diseases (p = 0.000) and acquired immunodeficiencies (p = 0.018). There was also a significant association between seropositivity and severe anemic syndrome (p < 0.000) and patient age (p = 0.009). This study is the first to document B19 seroprevalence in immunocompromised patients in Colombia and highlights a significant association with specific immunosuppressive conditions, such as chronic non-communicable diseases and acquired immunodeficiencies. The findings highlight the importance of monitoring B19 infection in these vulnerable populations, particularly given its association with severe anemia and other critical conditions.

Keywords: Seroprevalence; immunocompromised patients; anemia; human parvovirus B19.

https://doi.org/10.55463/issn.1674-2974.52.3.6

This study analyzes the burnout syndrome in academic and administrative staff at the Polytechnic University of Tulancingo, exploring differences in the dimensions of emotional exhaustion, depersonalization and personal accomplishment, as well as variations by gender. The research had a quantitative approach, with a descriptive, correlational scope and a cross-sectional design. For this work, a total sample of 229 participants was taken, where 162 were academic staff and 67 administrative staff. The instrument used was the Maslach Burnout Inventory (MBI). The results revealed significant differences between both groups, where teachers reported higher levels of emotional exhaustion and depersonalization, while administrative staff showed a lower perception of personal accomplishment. Regarding gender, women presented higher levels of emotional exhaustion and personal accomplishment, whereas men showed greater depersonalization. These findings highlight the need to consider work and gender dynamics when studying the impact of burnout in educational institutions. The study highlights the importance of implementing personalized strategies to mitigate burnout, such as stress management programs for teachers and redesigning tasks for administrative staff. These actions, adapted to the particularities of each group, will not only promote well-being at work but also contribute to strengthening the quality of educational services and the organizational environment.

Keywords: Burnout, emotional exhaustion, depersonalization, gender.

https://doi.org/10.55463/issn.1674-2974.52.3.5

This study presents the development of a standardized process for producing artisanal paper from Gynerium sagittatum (locally known as Caña Flecha) residues, a byproduct of Zenú handicraft production, carried out at the Industrial Engineering Laboratory of Universidad del Sinú Elías Bechara Zainúm. The objective was to obtain a paper with appropriate strength, appearance, and quality using accessible and low-cost techniques. The methodology involved mechanical and chemical fiber treatment, followed by sieving, pressing, and drying. Various process parameters were tested, including cooking time (2–3 hours), chemical agents (NaOH, CaCO₃, CaO), water volume, and drying time (2–4 days). The final product exhibited satisfactory mechanical and esthetic properties. The novelty of this research lies in transforming local agro-industrial waste into a sustainable material for artisanal use, aligning traditional craftsmanship with the principles of innovation, recycling, and environmental responsibility.

Keywords: Gynerium sagittatum, Caña Flecha, Zenú handicrafts, artisanal paper production, sustainable materials, agro-industrial waste, fiber processing, eco-friendly manufacturing, circular economy, traditional crafts and innovation, low-cost paper production, indigenous technologies, natural fiber pulp, chemical treatment of the plant fibers, Colombia’s sustainable development.

https://doi.org/10.55463/issn.1674-2974.52.3.4

This study investigates the relationship between emotional intelligence (EI) and decision-making in the professional choice of eleventh grade students in a Colombian city. A quantitative approach with a descriptive cross-sectional design was used to assess decision-making. The Kuder test for career choice, Bar-On emotional intelligence test, and Bechara and Damasio card games were applied to this end. The findings indicated a positive and significant correlation (p < 0.005) between EI and career decision making, underscoring the pivotal influence of dimensions such as self-awareness (r = 0.42, p < 0.01), social skills (r = 0.44, p < 0.01), and general mood (r = 0.232, p < 0.05). Specifically, heightened self-awareness fosters a more profound comprehension of personal strengths and interests, while augmented social skills and positive moods enhance the capacity for effective interaction and the maintenance of a favorable attitude toward decisions.
One of the novel contributions of the present study is the absence of previous research using the instruments used here, which highlights its relevance within the field. Likewise, the findings obtained allow us to open a path of reflection on the importance of the phenomenon of professional choice, both in youth and society in general. These results suggest that strengthening EI in students not only improves their professional choice process, but can also reduce academic dropout and increase satisfaction in their future careers.

Keywords: Career choice, emotional intelligence, decision making, vocational guidance, secondary education.

https://doi.org/10.55463/issn.1674-2974.52.3.3

This study examines the main challenges in English Language Teaching (ELT) in the academic environment and offers innovative solutions to improve students' learning experiences. Given the importance of English as a global language, effective mastery is crucial. However, obstacles such as language anxiety, lack of exposure to the use of authentic language, less effective teaching methods, and low motivation often hinder students' progress. This study used a literature-based approach to identify and analyze these challenges and formulate actionable solution strategies. The results showed that an interactive and communicative teaching approach, the integration of technology in learning, and the creation of a supportive learning environment can improve student engagement and language retention. Furthermore, this study highlights the need for a holistic approach that combines cultural relevance, student-based teaching practices, and consistent evaluation to improve language skills and academic success in ELT programs. By providing practical recommendations for educators, institutions, and policymakers, this study contributes to the development of more effective strategies to address barriers to English language learning in academic settings.

Keywords: English Language Teaching (ELT), Academic Environments, Language Learning Challenges, Teaching Strategies.

https://doi.org/10.55463/issn.1674-2974.52.3.2