Minerva

Deficiencies in the use of oral language in academic presentations by university students

Mayra Del Rocio Duarte Mendoza — 2025-05-03

In this study, the misuse of language presented by university students in didactic presentations was identified. The methodology was applied, non-experimental and descriptive. The technique of content analysis was applied to determine the types of language vices that the lecturers use in the presentations. Purposive sampling was used to select 21 students. The results revealed that there is a wide variety of language vices and that this misuse of words negatively affects the clarity, accuracy or correctness of a message. In this way, it was possible to conclude that it is important to strengthen oral communication skills and promote an appropriate use of the language for the professional development of students.

Obtaining lubricating greases from the epoxidation of Sacha Inchi seed oil

Fernando David Garcia Pallo — 2025-05-03

This study focuses on the production of lubricant fats from the epoxidation of oil extracted from Sacha Inchi seeds. The research addresses the growing need for sustainable alternatives to traditional petroleum-based lubricants by leveraging the properties of the Sacha Inchi seed. Through an epoxidation process, the oil was chemically modified to enhance its physicochemical properties and adapt it for lubricant applications. An experimental design was implemented to optimize the reaction conditions, evaluating factors such as reactant concentration, temperature, and reaction time. The results demonstrated the viability of this seed as a sustainable and effective option in the formulation of lubricant fats, concluding that it has favorable physicochemical characteristics both in its crude and epoxidized forms and complies with the INEN and ISO standards for such lubricants.

Digital tools and the learning of mathematics in basic education

Alex Andres Acosta Marino — 2025-05-05

In this work, the impact of digital tools on the learning of mathematics in basic education students was evaluated. The methodology combined qualitative and quantitative approaches, using surveys to collect data on the accessibility, usability, effectiveness, and security of digital tools, as well as on math performance. The results indicated that, although students have access to and frequently use digital tools, the perceived effectiveness is moderate due to the lack of teacher training. The perception of security and confidence in these tools varies, and the attitude towards learning mathematics shows an intermediate interest. The conclusions suggest the need to improve teacher training and optimize teaching and assessment strategies in mathematics.

Influence of marketing on the consumption of ultra-processed foods in university environments

Jennifer Lizbeth Andaluz — 2025-05-06

Ultra-processed foods are associated with obesity and chronic diseases. This study analyzes how marketing and the university food environment influence perceptions and preferences towards this type of food. The high availability of products considered as ultra-processed and the lack of healthy options near the different campuses, especially at night, generate an unfavorable food environment for university students. A quantitative-descriptive methodology with surveys was used. The results show that the most common advertising formats are posters and banners, while taste and price are the main motivators for consumption. In addition, there is a positive correlation between frequency of consumption and perception of benefits, evidencing the influence of marketing focused on ultra-processed products. The study highlights the need for educational interventions and advertising regulations in university environments to promote healthy habits, and counteract the prevention of catastrophic diseases.