The program “Cities for the future”, at the crossroads of education, communication, and technology. An articulation between museums and schools for utopian imagination

[EN] This article presents the results of the educational program “Ciudades para el futuro: crear utopías” (“Cities for the Future: creating utopias”) implemented between 2021 and 2022 jointly by the Museo Kosice and Museo Xul Solar (both in the city of Buenos Aires, Argentina), and some interrogations enabled thanks to the rethinking of the role of museums during the Covid-19 crisis. Precisely, Cities for the Future was designed during and for a context of social isolation as a result of a horizontal association between two single-artist museums and a strong collaborative articulation with other social actors (educational, artistic, technological and governmental). The aim was to establish a dialogue with a new public, transcending geographical barriers and enabling interactive and participatory access to both collections through digital technologies (Virtual Reality and 360º immersive videos), but with a focus on students’ creativity, imagination and inventiveness in school contexts. For this, a wide array of multimedia educational resources was specifically produced. We proposed a subtle shift in the institutional objectives of museums: from the acquisition, conservation, research, communication and exhibition of their heritage, to the promotion of new heritage creation, resignification and development outside its walls. In this transition –which traces a museum's journey from "the instituted" to its instituting possibilities– Cities for the Future was analytically broken down into four specific, consecutive and complementary objectives or lines of action: to bring both museums’ collections closer to new audiences outside their immediate region of influence, particularly to students from all over the country (muselogical perspective), to promote new ways of art consumption mediated by digital technology in a context of indefinite closure of museums (technological perspective), to promote school and educational activities –in person or online– where teachers and students can imagine, design and project future utopian cities with any artistic language (pedagogical perspective), and to make an audiovisual record of the whole experience, as a time capsule of the utopian imagination of the kids and youth of Argentina (communicational perspective). This article presents the results of the experience and some educational, technological, communicational and strictly museological questions about the role and digital actions of museums during the pandemic, the possibility of new ways of addressing old and new audiences and the museum-school partnership. We suggest that an educational and dialogical perspective enables the rethinking of the role of the museum as a space of creation and invention.[ES] En este artículo se presentan los resultados del programa educativo “Ciudades para el futuro: crear utopías” desarrollado entre el 2021 y el 2022 de forma conjunta por el Museo Kosice y el Museo Xul Solar (ambos en la Ciudad de Buenos Aires, Argentina), y algunos de los interrogantes que se habilitaron gracias al replanteamiento del rol de los museos durante la crisis del Covid-19.Precisamente, Ciudades para el futuro se diseñó durante y para un contexto de aislamiento social, partiendo de una asociación horizontal entre dos museos de arte monoautorales y una fuerte articulación colaborativa con otros actores sociales (educativos, artísticos, tecnológicos y gubernamentales).Se buscó establecer un diálogo con un nuevo público, trascendiendo barreras geográficas y habilitando el acceso interactivo y participativo a ambas colecciones a través de tecnologías digitales (Realidad Virtual y videos inmersivos 360º), pero con un eje centrado en la creatividad, imaginación e invención de los estudiantes en contextos escolares, produciendo para ello una diversidad de recursos pedagógicos específicos y multimediales. Se propuso un sutil deslizamiento de los objetivos institucionales de los museos: de la adquisición, conservación, investigación, comunicación y exposición de su patrimonio, a promover su creación, resignificación y desarrollo fuera de sus paredes. En este tránsito -que traza un recorrido de un museo de “lo instituido” a sus posibilidades instituyentes- Ciudades para el futuro se desgranó en cuatro objetivos (líneas de acción) específicos, consecutivos y complementarios: acercar el patrimonio de ambos museos a nuevos públicos fuera de su región, particularmente a estudiantes de todo el país (dimensión museística), promover nuevas formas de relación con la obra de arte mediada por la tecnología en un contexto de cierre indefinido de museos (dimensión tecnológica), promover el trabajo en aula -presencial o virtual- con docentes y estudiantes para imaginar, diseñar o proyectar ciudades futuras desde cualquier lenguaje artístico (dimensión pedagógica), y realizar y difundir el registro audiovisual de la experiencia, como una cápsula de tiempo de la imaginación utópica de niños y jóvenes argentinos (dimensión comunicacional).Esta comunicación presenta los resultados de la experiencia y algunos interrogantes educativos, tecnológicos, comunicacionales y estrictamente museológicos sobre el rol y acciones digitales de los museos durante la pandemia, la posibilidad de interpelar de otras maneras a viejos y nuevos públicos y la articulación museo-escuela. En este recorrido, sugerimos que una perspectiva educativa y dialógica habilita el replanteamiento del rol del museo en tanto espacio de creación e invención.Pérez Fallik, M. (2022). El programa “Ciudades para el futuro” en el cruce de la educación, la comunicación y la tecnología. Una articulación entre museos y escuelas para la imaginación utópica. En CIMED22 - II Congreso internacional de museos y estrategias digitales. Editorial Universitat Politècnica de València. 149-161. https://doi.org/10.4995/CIMED22.2022.1553914916

Fruit Quality of Grafted Watermelon (Citrullus lanatus): Relationship between Rootstock, Soil Disinfection and Plant Stand

Grafting of vegetable transplants is a unique horticultural technology, which was adapted from the practice in perennial crops. However, rootstock/scion combinations may affect and alter the final size, yield, and quality of fruits of grafted plants, both immediately postharvest and during prolonged storage. We evaluated the effect of two rootstocks [TZ148 and Nurit (commercial Cucurbita spp. hybrids)] grafted on one scion (seedless watermelon cv. 1262) in two plant stands (2500 and 5000 plant ha-1), on plant viability, number of marketable fruits (fruits weight above 5 kg) and fruit quality after one week storage at 20°C, in non- or disinfested soil. Soil disinfection significantly improved the viability of non-grafted plants. All grafted plants significantly performed better vine vigor, with no wilt or vine decline symptoms, in either disinfested or non-treated soil, regardless of the type of the rootstock. Plant stand did not affect plant viability. The number of marketable watermelon fruits per m2 was 75 to 700% higher in grafted plants than in non-graft ed. Grafting on Nurit produced significantly more marketable fruits than grafting on TZ148. The quality of fruits harvested from grafted plants was significantly better than non-grafted fruit in both plant stands and soils. Watermelons harvested from Nurit-grafted plants had better taste and texture and almost seedless compared to control and TZ-148-grafted plant

Effect of 1-methylcyclopropene on the antioxidant capacity and postharvest quality of tomato fruit

Tomato fruits ‘1402’ were harvested at mature green (MG), light pink (LP) and light red (LR) stages and treated with 0.3 μL L-1 of 1-methylcyclopropene (1-MCP) at 20°C for 24 h to investigate the ability to retard tomato fruit ripening. The treated and control fruit were stored at 5°C and 12 oC for 14 days and a further 4 days at 20oC for a shelf life period. The results show that the effects of 1-MCP on fruit ripening were related to the stage of maturity and storage temperature. The MG stage was the optimal stage for 1-MCP treatment when fruit storage was at 12°C. 1-MCP treatment reduced the lipophilic antioxidant activity (LAA) of the tomato fruit, but the hydrophilic antioxidant activity (HAA) remained similar to that observed at harvest. 1-MCP is a potential tool for extending shelf life, delaying tomato fruit ripening (slowing color development and firmness loss) and enhancing quality of tomatoes.Keywords: Tomato, 1-MCP, storage, stage of maturity, temperatureAfrican Journal of Biotechnology Vol. 12(6), pp. 547-55

El arte como puente. Experiencias compartidas de la 1° Jornada EPEA

The objective of this article is to present and reflect on some tensions and triggers that manifested as a result of the organization and celebration of the 1st Conference on Pedagogical Experiences of Education through Art (EPEA).  El objetivo de este artículo es presentar y reflexionar sobre algunas tensiones y disparadores que se manifestaron como resultado de la organización y celebración de la 1° Jornada de Experiencias Pedagógicas de Educación a través del Arte (EPEA).O objetivo deste artigo é apresentar e refletir sobre algumas tensões e gatilhos que se manifestaram a partir da organização e celebração do 1º Encontro de Experiências Pedagógicas de Educação pela Arte (EPEA).&nbsp

Modelling chemotherapy resistance in palliation and failed cure

The goal of palliative cancer chemotherapy treatment is to prolong survival and improve quality of life when tumour eradication is not feasible. Chemotherapy protocol design is considered in this context using a simple, robust, model of advanced tumour growth with Gompertzian dynamics, taking into account the effects of drug resistance. It is predicted that reduced chemotherapy protocols can readily lead to improved survival times due to the effects of competition between resistant and sensitive tumour cells. Very early palliation is also predicted to quickly yield near total tumour resistance and thus decrease survival duration. Finally, our simulations indicate that failed curative attempts using dose densification, a common protocol escalation strategy, can reduce survival times

Photoselective shade nets reducing postharvest decay development in pepper fruits

During two-year studies, we evaluated the influence of photoselective coloured shade nets on the quality of fresh harvested pepper fruits (Capsicum annuum) after prolonged storage and shelf life simulation. Pepper cultivar ‘Romans’ grown in a semi arid region under 35% pearl and yellow shade nets significantly maintained better pepper fruit quality after 16 days at 7°C plus three days at 20°C, mainly by reducing decay incidence during two consecutive years (2008 and 2009), compared to commercial black and red nets. No significant differences were observed in percentage of weight loss, firmness and total soluble solids in fruit harvested under the different coloured shade nets. The skin colour of fruit harvested under Pearl net was significantly lighter than that of fruit harvested under red and black shade nets and this fact can be associated with inhibition of fruit ripening during growth. After storability and shelf life simulation however skin colour was red to dark red under all shade nets. Pearl and yellow shade nets significantly reduced Alternaria spp. population in the field, which was evaluated with Alternaria-selective growing medium. The highest Alternaria population was found under red shade net. The significant low decay incidence in fruit harvested under pearl and yellow shade nets can be explained by the low inoculum level of Alternaria spp. in the field, and inhibition of fungal sporulation, and/or by a slowing of fruit ripening during its growth, reducing fruit susceptibility to fungal infection in the field due to the scattered light, its quality and the ratio between the light spectrum under the two shade nets

Postharvest quality of refrigerated tomato fruit (Solanum lycopersicum, cv. Zinac) at two maturity stages following heat treatment

This study evaluated the effect of water heat treatment (WHT, immersion in a water bath at 40C - 30 min) application in alternative to the conventional decontamination treatment of chlorinated water (150 ppm at 5C, pH 6.5 during 2 min) on tomato (cv. Zinac) at two maturity stages (turning and pink). Physiochemical attributes, enzymatic activities and microbial load were evaluated after treatments and during 14 days of storage at 10C. The WHT applied was very effective on microbial reduction and delayed physiochemical changes of tomato, namely firmness loss and red color development during storage period, especially at turning maturity stage. Based on the firmness parameter, shelf-life of control and WHT samples were determined. Our results provide strong evidence that postharvest WHT (40C - 30 min) for tomato fruits at turning maturity stage guarantees the overall quality at 10C twice as long of fruits washed with chlorinated water.info:eu-repo/semantics/acceptedVersio