Publicaciones recientes
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PublicaciónAntimicrobial Activity of Origanum vulgare Essential Oil against Staphylococcus aureus and Escherichia coli(Multidisciplinary Digital Publishing Institute (MDPI), 2024-01-01)Background/Objectives: Oreganum vulgare essential oil (OEO) is safe, effective, multifunctional, and widely used. This study aimed to evaluate OEO’s chemical composition and antimicrobial activity in vitro against S. aureus and E. coli. Methods: The composition of OEO was determined by gas chromatography–mass spectrometry (GC-MS). Results: Compounds included monoterpenes with known antimicrobial activity, such as 2-menthen-1-ol (36.33%), linalyl acetate (9.26%), terpinene-4-ol (9.01%), 4-thujanol (6.33%), menthen (5.81%), sabinene (5.18%), and carvacrol methyl ether (5.14%). Conclusions: OEO had a strong antimicrobial activity with a minimum inhibitory concentration (MIC) of 1.90 mg/mL for S. aureus and 0.49 mg/mL for E. coli after 18 h incubation. The minimum bactericidal concentration (MBC) was 7.9 mg/mL against S. aureus and 0.99 mg/mL against E. coli. Thus, OEO could be used as a natural antimicrobial against S. aureus and E. coli infections.
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PublicaciónAplicación del ultrasonido para conservar las propiedades antioxidantes de la pitahaya(Latin American and Caribbean Consortium of Engineering Institutions, 2024-01-01)Pitahaya fruit has a considerable content of antioxidant and nutraceutical substances. Traditional techniques and thermal treatments used in fruit processing alter the phytochemical and nutritional components and limit their utilization, so a modern and suitable technology was sought to help preserve its components, finding ultrasound as one of the techniques that favors the preservation of the nutritional properties, bioactivity and antioxidants of the fruit pulp and its derived or processed products. In the processing of the pitahaya, the pulp was extracted by cutting it into slices and freezing it at -50°C, then freeze-drying it for about 49 hours. The dry ground sample was macerated in methanol for 7 days, separated into portions to determine the antioxidant capacity by DPPH method and analyzed by spectrophotometer. In a filtered portion, the antioxidant capacity was determined directly, and other portions were subjected to ultrasound before analysis, evaluating the times, power and frequency of application in order to preserve the natural antioxidant and nutritional composition of the pulp; it was found that the sample to which ultrasound was applied for 20 minutes at 180 W power and 40 kHz frequency was the most relevant to preserve the antioxidant capacity of the pitahaya pulp. © 2024 Latin American and Caribbean Consortium of Engineering Institutions. All rights reserved.
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PublicaciónModels for R+D+i+e interaction between the university and its context. A Literature Review(Latin American and Caribbean Consortium of Engineering Institutions, 2024-01-01)The interaction of the university and its context determines the policies to ensure that research and development (R+D) have a positive impact on society. However, innovation and entrepreneurship (I+E) have been generating new scenarios and policies in the university. The aim of this study is to identify models for R+D+i+e interaction between the university and its context. In this research, a systematic mapping study (SMS) was performed in five digital libraries. In the process, 13,561 articles were obtained and 336 articles selected as primary studies. In the literature, 17 interaction models for R+D+i+e interaction between the university and its context were identified. The most reported models are: Industrial University, Triple Helix, Entrepreneurial University, Open Innovation and Stakeholders. Likewise, the main types of activities linked to the identified models are: research, innovation and the combination of research and development. In contrast, there are few for experimental development and entrepreneurship. © 2024 Latin American and Caribbean Consortium of Engineering Institutions. All rights reserved.
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PublicaciónSustainability in undergraduate course curricula at Andalusian (Spain) universities: a critical analysis(Frontiers Media SA, 2024)Education is one of the main tools used to implement sustainable development goals (SDGs). Higher education institutions (HEIs) have a major social responsibility regarding sustainability given the relevance and impact of their educational work and the creation of knowledge through their research. Sustainability is promoted and linked to values, teaching-learning methodologies, and studying of global–local problems. Within this framework, the objective of our research is to determine the presence and means by which sustainability appears in the course curricula of university bachelor’s degrees of the public universities of Andalusia (Spain). The study used quantitative methodology. As in other studies, major deficiencies have been revealed in terms of the inclusion of sustainability in the universities, determining a limited presence of local problems to address sustainability. Thus, Andalusian universities distance themselves from the society and community in which they exist. This may also limit student knowledge of sustainability issues in which they could potentially be relevant participants.
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PublicaciónEl valor social integrado en empresas de la economía social en España: una revisión sistemática(Associacao Iberica de Sistemas e Tecnologias de Informacao, 2024-01-01)This systematic review focuses on Integrated Social Value (ISV), an emerging methodology essential to evaluate the monetary impact in social economy companies. It highlights its relevance in the creation of long-term value, in contrast to the maximization of short-term profits. The Prisma method was applied, and various documentary sources were used, such as C.I.R.I.E.C, Dialnet, ResearchGate, Science Direct, B.E..E, Frontiers and Sage Journals, revealing that the methodology has only been applied and studied in Spain. In the literature examined, cases from special employment centers to social cooperatives stand out, evidencing the emerging importance of VSI for organizations of this type. In conclusion, the VSI emerges as a valuable tool for quantifying social value in nonprofit companies, with implications for corporate social responsibility and social accounting. © 2024, Associacao Iberica de Sistemas e Tecnologias de Informacao. All rights reserved.
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PublicaciónRaising Awareness in the Adoption of COVID-19 Preventive Measures in Higher Education Students through an Epidemiological Surveillance Mobile App(CEUR-WS, 2021-01-01)COVID-19 disease has started several levels of alert and biosafety protocols to mitigate the risk of contagion everywhere, therefore causing universities to adopt the virtual environments in their teachings, but nowadays it became a necessity to return to classrooms in a short term basis; however, how prepared are we for this “new normal”? In this research, a validated questionnaire was used to measure the knowledge of COVID-19 and preventive measures adopted by university students, before and after the use of an epidemiological surveillance mobile app, developed as a tool to raise awareness in students. The research was quantitative, quasi-experimental, it was applied in a sample of 82 students, the analysis was global and gender inferential using the non-parametric T test for paired samples. The results indicated that the epidemiological surveillance mobile app made possible to raise awareness in the students in the adoption of preventive measures, proposing awareness strategies that allow establishing alerts and timely controls. © 2020 Copyright for this paper by its authors.
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patent.listelement.badgeUna camilla de rescate para disminuir los riesgos ergonómicos de los bomberos( 2024-09-25)Esta innovación incluye un disco giratorio situado debajo de la mesa, que permite rotar la camilla en espacios reducidos sin esfuerzo físico, facilitando así la evacuación. Sus patas regulables mejoran la maniobrabilidad en lugares de difícil acceso. Además, se complementa con un chaleco que integra un riel casero para ajustar la altura de la camilla, minimizando el ángulo de inclinación y reduciendo la carga física, junto con un cinturón que utiliza el bombero en el extremo opuesto.
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PublicaciónCOVID-19 Preventive Measures Among Artisan Women Working with Native Cotton in a Protected Natural Area(CEUR-WS, 2022-01-01)The COVID-19 pandemic has significantly affected the tourism sector globally. In recent years, tourism in Peru experienced sustained growth, and the natural protected areas (ANP Areas Naturales Protegidas) became consolidated into main tourist destinations. Nevertheless, vulnerable groups like artisan workers have suffered more acutely from this crisis. This study was conducted in the buffer zone of the Bosque de Pómac Historic Sanctuary, with the study population being the artisan women of the native cotton weaving line (of the scientific name of Gossypium barbadense L., a trade product native to the area, which is in the process of extinction and was used by ancestral cultures). The objective of this study is to describe the socio-demographic profile and the compliance with preventive measures against COVID-19 of artisan women for tourism recovery. The research has a quantitative, descriptive-cross-sectional approach. A checklist was given to 30 artisan women specifically from the Jotoro-Jayanca, Pómac III-Pitipo, and Túcume population centers. To test the content validity of the instrument, Aiken's validity coefficient was chosen with 10 assessors who were experts in health and tourism; the items were fully approved and statistically significant (Aiken's V = 1, p = 0.0 01). The data was processed with IBM SPSS version 25, using descriptive statistical techniques. The results showed that 93.3 of the artisans had their vaccination doses and 70% are still not complying with preventive measures such as hand washing, the use of masks, and social distancing required by COVID-19 on behalf of the Peruvian state. It is concluded that interventions are needed to apply protocols when tourism has recovered for personal, family, and community care. © 2022 Copyright for this paper by its authors. Use permitted under Creative Commons License Attribution 4.0 International (CC BY 4.0)
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PublicaciónA Qualitative Systematic Literature Review on Phonological Awareness in Preschoolers Supported by Information and Communication Technologies(MDPI, 2022-01-01)This review is a systematic literature review (SLR) with the aim of advancing the state of the art in Phonological Awareness in preschoolers (4–6 years) by means of Information and Communication Technologies (ICT). The SLR provides an important guide to newcomers to this domain and researchers who seek a structured body of knowledge in the subject for gaining new, important insights. Searches were carried out in the indexed database Scopus© between June and July 2020. Among the inclusion and exclusion criteria were studies reported in English, Spanish and Portuguese, updated electronic documents from the last ten years and studies cited by others at least once, except for those with publication acknowledgement after 2017. To complete the task, a triangulation assessment was made among three researchers using the same tool developed in Microsoft Excel©, in which the search terms, the search strings, inclusion and exclusion criteria and the study collection process were systematized along with a word cloud of keywords to improve the systematic feature of the SLR. Fifty-nine (59) scientific articles were selected and from those, 24 articles met the experts’ criteria. The method included: (1) search and selection of terms, (2) inclusion and exclusion criteria; (3) the searching process; and (4) reporting study collection. The SLR synthesis reported in this paper is a novel contribution built on two conceptual categories: Computer assisted learning systems (CAL) and Computer assisted instruction systems (CAI) which frame works on Phonological Awareness processes with Preschoolers and provide an appraisal of the results to advance knowledge of systematic reviews of preschoolers’ phonological awareness strictly supported by ICT.
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PublicaciónVirtual Educational Intervention of Craftswomen Working with Native Peruvian Cotton during COVID-19 for Reactivating the Artisian Tourism(MDPI, 2022-01-01)The pandemic has significantly affected the tourism sector worldwide; however, craftswomen are a vulnerable group that has been affected economically by this crisis. This research evaluated the level of compliance with preventive measures before and after carrying out the virtual educational intervention for craftswomen working with native cotton in the Lambayeque Region, Peru. The methodology applied was a pilot study, quasi-experimental, without a control group. The population consisted of 30 craftswomen from the populated areas of La Raya–Túcume, Pómac III-Pitipo and Jotoro-Jayanca. SPSS Statistics v25 was used for data processing. The χ2 test was used in order to evaluate the variation before and after the intervention. The correlational findings demonstrate that after applying the virtual educational intervention, it is sufficient to apply specific measures in the first (before) and second stage (during) to obtain a higher result in compliance with the general level of the regulations against COVID-19. It is concluded that the virtual educational intervention for the craftswomen has generated awareness, impacting the care of their personal health, their family and their community, as well as being prepared for the reactivation of tourism.