Deforestation caused by gold mining in the Ecuadorian Amazon has increased by 300% in the last decade, leading to severe environmental degradation of water and land resources. Effective remediation and revegetation technologies are still needed to address this issue. This study aimed to foster revegetation on 0.5 hectares of degraded land in Naranjalito, a mining site in the Ecuadorian Amazon, by applying plant-based biocompost and biochar and planting Ochroma pyramidale and Arachis pintoi, two pioneer species. The project’s objective was to evaluate the impact of these treatments on vegetation cover recovery through physicochemical and microbiological improvements in the soil. Four blocks and sixteen experimental plots were established: eight plots received treatments with varying doses of biocompost+biol (BIOC), four plots included plantations without biocompost (Not-BIOC), and four served as control plots (bare land). Over six months, dasometric characteristics of O. pyramidale and the expansion of A. pintoi were recorded. The data were analyzed using multivariate methods. The results revealed significant differences between treatments, with BIOC plots T4 and T1 showing greater improvements in vegetation development compared to Not-BIOC plots T3 and T2, confirming the positive influence of biocompost+biol. The BIOC treatment favored not only the planted species but also the secondary successional plant communities including certain grasses, leguminous plants, and other shrub and tree species, thus accelerating the revegetation process. This study demonstrates that biocompost application is an effective strategy to enhance plant recolonization on land severely degraded by gold mining in the Ecuadorian Amazon.

Reflectors antennas in Ku band are primarily used for satellite communications. They are mainly employed for establishing the communications for data transmission. In this paper, a displaced axis dual reflector antenna, usually referred as Axially Displaced Ellipse (ADE)antenna, is presented, demonstrating its advantages compared to the classical dual reflector antennas. Results show that the design antenna meets the expectations for SATCOM communications.

We evaluate the performance of direct-detection 25 Gb/s Passive Optical Networks (PON) with adaptive equalization at the receiver side, comparing three transmitter schemes: two including digital signal processing (DSP), namely square-root raised-cosine pulse shaping and pre-emphasis, and the third one without any DSP pre-compensation. We show that DSP at transmitter side can provide a performance advantage only under strong bandwidth limitations and when considering feed-forward equalization (FFE) at the receiver. When including decision-feedback equalization (DFE), the use of pre-compensation at transmitter does not provide any advantage under linear transmission.

Objectives: This study aims to explore the conceptual and procedural elements of using heuristics in the teaching of Experimental Sciences and their impact on strengthening students' cognitive and metacognitive competencies. Heuristic strategies such as analogy, working backward, and problem segmentation are analyzed to determine their role in metacognitive development. Theoretical Framework: The theoretical framework emphasizes heuristics as a set of methods and strategies that foster discovery and problem-solving. These tools are essential for promoting active and reflective learning, as well as addressing current academic and professional challenges. Methodology: This study adopts a qualitative-descriptive approach based on action research. Heuristic strategies applied in educational contexts were analyzed through interviews with students and teachers, along with systematic classroom observations. Results and Discussion: The findings reveal that integrating heuristic processes into teaching enhances the understanding of complex concepts, fosters autonomous learning, and promotes critical reflection among students. Additionally, teacher training in these strategies is identified as crucial to maximizing their effectiveness in educational settings. Research Implications: This study highlights the importance of incorporating heuristic strategies into educational programs to strengthen students' metacognitive competencies and improve reflective learning. Future research should explore the adaptability of these strategies across different cultural and educational contexts. Originality/Value: This work stands out for its detailed analysis of heuristics as a key tool in developing metacognitive competencies. It provides empirical evidence supporting the relevance of these strategies for education in Experimental Sciences and offers a conceptual foundation for future research.

La tecnología ha experimentado una evolución significativa en los últimos años, y su impacto en las empresas ha sido notorio. La Realidad Aumentada (RA) se ha convertido en una tecnología en constante desarrollo que combina elementos virtuales con el mundo real, ofreciendo nuevas formas de interacción e información en varios sectores: entretenimiento, medicina y educación. Las normas de seguridad e higiene en laboratorios son vitales para asegurar un entorno de trabajo libre de riesgos, donde la manipulación segura de objetos y sustancias en estos espacios es esencial, llevando a considerar las normativas y pautas regulatorias pertinentes para garantizar la higiene y la seguridad en los laboratorios de nivel 1. El objetivo de esta investigación es diseñar una app móvil utilizando la RA y los componentes touchable Opacity, touchable Opacity on Press, codificados en IDE visual Studio Code y Framework React Native acerca de un conjunto de normas de seguridad e higiene en laboratorios: técnicos y de enfermería, con el fin de hacer conciencia de su uso correcto. La metodología empleada consta de cuatro fases: i) análisis de Información, ii) diseño de la App Móvil, iii) desarrollo de Ambientes, iv) pruebas y lanzamiento. En base a los resultados obtenidos la implementación de una app móvil con la RA resultó amigable y de fácil utilización por los usuarios, permitiendo generar conciencia y la correcta utilización de las normas de seguridad en los laboratorios. Concluyendo que la RA ofrece una tecnología transformadora que enriquece la percepción del mundo real al superponer información digital.