Sistema Regional de Información
en línea para Revistas Científicas de América Latina,
el Caribe, España y Portugal

In Mexico, around 75 % of corn plants are native varieties, particularly in Yucatan; corn is grown in Leptosol soil, which has a low water storage capacity and nutritional problems. Microbial inoculants present an alternative to these conditions by improving plant rooting and nutrient availability in the soil. The objective of this work was to evaluate the effect of microbial inoculants based on Rhizophagus irregularis, Pseudomonas fluorescents and Bacillus subtilis, on the growth and yield parameters of the native corn Nal-tel. Microbial inoculants were applied to the native corn Nal tel, and the parameters of gas exchange in corn at the flowering stage and the yield parameters at the physiological maturity stage were determined. The microbial inoculants showed a significant increase in the parameters of gas exchange and dry biomass (27 - 110 and 10 - 63 %, respectively). Inoculated plants did not show a significant effect on yield parameters (1637.50 - 1987.50 kg/ha).

The purpose of this research was to determine the connection between Nordic hamstring power, and agility and speed performance among Turkish national badminton players. The study included 11 male and 6 female national badminton players. The hamstring muscle power of the athletes was measured using the H-Bord machine. Additionally, agility performance was evaluated using the Agility T-Test, and the 10-meter sprint performance was measured using an electronic photocell. An analysis of the study findings revealed a statistically significant difference between NHTecc(a) and NHTecc(b) hamstring muscle strength, and the T-test and 10-meter sprint scores in terms of the gender variable. Furthermore, a strong negative correlation was observed between participants’ NHTecc(a) and NHTecc(b) leg strength and their T-test performance. Supporting this finding, a negative correlation was also identified between NHTecc(a) and NHTecc(b) leg power and 10-meter sprint performance. In conclusion, this research analyzed the effects of Nordic hamstring strength on agility and speed performance in badminton athletes and identified a strong negative correlation between these variables. In this context, it is suggested that training programs aimed at improving eccentric muscle strength may help optimize agility and speed performance, particularly in the sport of badminton.

The agrarian tradition of Salasaka in Ecuador is characterized by its ancestral heritage. However, the use of chemical inputs and the monoculture have led to a decline in productive capacity. This study evaluated the perception of Salasaka farmers regarding the use of chemical pesticides and their knowledge of sustainable agricultural pest management strategies. A cross-sectional study was conducted using a structured questionnaire applied to agricultural producers from the Manguihua Cochapamba Katitawa Community (Salasaka parish). The results showed that 60 % of farmers believe pesticides are effective for rapid pest and disease control, as well as for increasing productivity and stimulating plant growth. However, farmers also perceive negative aspects such as high cost (73.3 %), potential harm during handling (46.7 %), and environmental damage (73.3 %). Despite a high proportion of farmers claiming to know about sustainable pest control alternatives, only a small percentage use them. This highlights the need for the development and implementation of training programs to demonstrate the potential of sustainable pest control practices.

This study aimed to evaluate the potential of dehydrated wild prickly pear (Opuntia robusta) for the growth of Lactobacillus spp. A minimal medium based on prickly pear and peptone (NPM) was formulated and separately inoculated with five Lactobacillus strains. Growth kinetics were performed to determine growth, total sugar consumption, pH behavior, and lactic acid production compared with a comercial culture medium (MRS). Results show that NPM provides the minimum substrates necessary for the growth of the strains evaluated. L. fermentum 634 was the most efficient, reaching an OD630 of 0.7667±0.0527 and 1.0639±0.0616 in NPM and MRS, respectively. Notably, no lag phase (λ = 0) was observed in NPM, suggesting rapid bacterial adaptation, while in MRS, L. fermentum 634 presented a lag phase of 1.137 h. The generation time in NPM (2.67 h) was comparable to that in MRS (2.31 h), indicating efficient bacterial replication. These results suggest that dehydrated prickly pear could serve as a foundation for formulating culture media. This can be enhanced by incorporating specific substrates necessary for bacteria, optimizing sustainable and economical industrial fermentation processes.

The objective of the research was to evaluate the effect of the Steiner nutrient solution concentration (50, 75, 100 and 125 %) and the foliar application of silicon (with and without application) on the production of hydroponic serrano chili. The treatments were distributed under a design of randomized complete blocks arranged in divided plots. The base solution (100 %) and 75 % concentration caused greater plant growth and greenness index (SPAD readings). The highest fruit yields were achieved with the 75 and 50 % solutions. The solution at an ionic concentration of 75 % increased the diameter of premium fruits, however, none of the concentrations of the nutrient solution modified the soluble solids (ºBrix) of the fruits. On the other hand, it was shown that silicon significantly favors growth, greenness index and plant yield, but not fruit quality (ºBrix). The 75 % SN combined with the foliar application of silicon guarantees the highest crop yield (2.02 kg m-2) and fruit diameter (1.82 cm).

Con motivo del XXIII Premio Internazionale Carlo Scarpa per il Giardino, otorgado al Espacio Escultórico y al paisaje del Pedregal de San Ángel, por la Fundación Benetton, se preparó un libro que reúne a más de 20 autores, quienes documentan y reflexionan sobre este icono de Ciudad Universitaria y de la UNAM. Editado por Luigi Latini y Patrizia Boschiero, este libro vio la luz en italiano e inglés y la versión en español ha sido coeditada con la UNAM. Presentamos un fragmento del texto «Origen y evolución de la Ciudad Universitaria de México».

La Asociación de Instituciones de la Enseñanza de la Arquitectura de la República Mexicana (ASINEA) agrupa a diversas universidades e instituciones educativas enfocadas en la docencia de la arquitectura y el urbanismo en México, con el objetivo de impulsar la innovación y la excelencia académica en estos campos. En abril de 2024, la Facultad de Arquitectura de la UNAM (FA) fue sede de la Reunión Nacional 110, que también conmemoró el 60 aniversario de esta asociación. Como cierre de este suceso presentamos una entrevista con Isaura González Gottdiener —secretaria académica de la FA y coordinadora de la reunión— y con Homero Hernández Tena —presidente del Consejo Directivo de la ASINEA—. Además, con el propósito de destacar el espíritu colaborativo y el diálogo constructivo que debe caracterizar a este tipo de eventos, invitamos a dos personas de la comunidad de la FA para compartir sus impresiones sobre esta edición. Completamos este ejercicio con la participación de una estudiante de la licenciatura de Arquitectura, quien intervino algunas fotografías tomadas para documentar el encuentro.

Andrés Cedillo explora el Espacio Escultórico de Ciudad Universitaria desde una perspectiva en la que refleja tanto su formación como arquitecto como su pasión como fotógrafo. Su mirada nos revela una atmósfera configurada por volúmenes, luces y sombras que le dan a este espacio icónico un enfoque personal. «Quise capturar lo que yo siento al estar dentro de esta obra, crear un poema visual para este espacio». Andrés Cedillo es fundador de ESPACIOS - Architectural Photography and Filmmaking Studio. Su amor por la fotografía surgió mientras cursaba la carrera de arquitectura en la UNAM y decidió complementar sus estudios en la Escuela Activa de Fotografía. Sus imágenes forman parte de más de 30 publicaciones especializadas en la Facultad de Arquitectura de la UNAM y otras reconocidas revistas nacionales e internacionales.

Los 17 ensayos reunidos en el libro Meditaciones intemporales. Ensayos selectos de arquitectura de Alberto Pérez-Gómez resultan apasionantes por su extraordinaria capacidad de enfoque a una serie de temas que podemos llamar clave en el conocimiento y la teoría de la arquitectura. Construidos con erudición y dominio de cada tema, los ensayos pueden ser dirigidos lo mismo a un público lector de la disciplina de la arquitectura, como a aquellos interesados en lo general en ampliar su cultura arquitectónica.

Roberto Eibenschutz ha sido una estrella radiante en el campo de la planeación urbana y regional. Su trabajo ha iluminado muchas de las prácticas y teorías que hoy consideramos fundamentales para entender y mejorar nuestras ciudades y regiones. Su compromiso con la justicia social, el desarrollo sostenible y la educación ha nutrido a generaciones de urbanistas y arquitectos, incluyéndome a mí. Su liderazgo no sólo ha moldeado el panorama urbano, sino también el intelectual y académico de México y quizás más allá.