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- ItemAristóteles, la percepción del tiempo en sede práctica y las objeciones de Pseudo-Filópono(Georg Olms Verlag, 2023) Boeri Carranza, Marcelo Diego
- ItemIntroduction: The Power of Parental Talk(Elsevier, 2016) Susperreguy Jorquera, Maria Inés; Bindman, S.W.; Davis-Kean, P.E.; Tang, S.; Davis-Kean, Pamela; Tang, Sandra
- ItemExperimental Analysis of Helix Aspersa Shell as Cementitious Material(Springer, 2024) Campos-Cortes, María José; Brescia-Norambuena, Leonardo; Retamoso, Claudia; Escalona Burgos, Néstor GuillermoThe high environmental impact of the cement industry demands the study of new cementitious materials. Often supplementary cementitious materials such as fly ash or silica fume are used; however, the depletion of raw materials encourages the assessment of new sources. Due to the high calcium content of snail shells, this research explored the use of crushed powder of Helix Aspersa to replace cement, evaluating its use at different percentages of replacement in weight (0, 5, and 10%), calcination temperature (0, 450, and 900 °C) and water-cementitious materials ratios (0.35, 0.40, and 0.45). The results included analysing setting time, compressive and flexural strength, water absorption, and shrinkage. Results indicated that snail shells (i) create an expansion during the first days (~15%), reaching similar values at 28 days, (ii) decrease the water absorption at calcination temperatures ≥450 °C, and (iii) slightly reduce the flexural strength (~16% in average) and compressive strength (~10% in average). As the main decrement of the responses is at a low w/cm ratio, it is expected that calcined snail shells offer the opportunity to save cement and pollution from the construction industry.
- ItemNormas sociales y mecanismos que reproducen la desigualdad de género en el contexto educativo(2023) Paz Martin, Sarah; Jimenez Moya, Gloria; Del Río, Marais; Contreras, Camila
- ItemSustainable transport and gender equity: Insights from Santiago, Chile(Emerald Group Holdings Ltd., 2020) Sagaris, Lake; Tiznado Aitken, Ignacio Andrés; CEDEUS (Chile)Sustainable transport is often defined according to energy efficiency and environmental impacts. With global approval during Habitat III, however, a set of Sustainable Development Goals have become the focus for human development until 2030, underlining the relevance of health, equity and other social issues. These goals raise the challenge of achieving significant progress towards ‘trans-port justice’ in diverse societies and contexts. While exclusion occurs for different reasons, discrimination, based on cultural roles, combines with sexual harassment and other mobility barriers to limit women’s mobility. This makes gender an area of particular interest and potential insight for considering equity within sustainability and its social components. Using data from Metropolitan Santiago to ground a conceptual exploration, this chapter examines the equity implications of women’s travel patterns and sustainable transport. Key findings underline the importance of considering non-work trip purposes and achieving better land-use combinations to accommodate care-oriented trips. Moreover, barriers linked to unsafe public transport environments limit women’s mobility and, therefore, their participation. Women account for a disproportionately high number of walking trips, a situation that can be interpreted as ‘greater sustainability’ in terms of energy use and emissions, but suggests significant inequalities in access. Environmental and economic sustainability gains may be achieved at a high social cost, unless specific measures are taken.