93 research outputs found

    Indoor Environmental Quality and Consumption Patterns before and during the COVID-19 Lockdown in Twelve Social Dwellings in Madrid, Spain

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    This article analyses the situation that prevailed in 12 dwellings located on the outskirts of Madrid during Spain’s state of emergency. How did 24/7 occupation affect the quality of indoor air and power consumption patterns? The mixed method used (surveys and instrumental monitoring) pragmatically detected the variation in consumption, comfort and indoor air quality patterns before and during the COVID-19 pandemic. The characteristics initially in place and household predisposition had a conclusive effect on such variations. The starting conditions, including household composition, habits and the way daily activities were performed, differed widely, logically affecting power consumption: 8/12 case studies increase occupancy density by more than 25 percent; 11/12 improve thermal comfort; 10/12 improve air quality but not necessarily translate in a sufficient ventilation practices; air quality was lower in the bedrooms on the whole; only 4/12 case studies use the potential of passive measures; only one household adopted energy savings strategies; 10/12 case studies increase electric power consumption but none of the dwellings was fitted with a renewable power generation system. The conclusion drawn is that, despite starting conditions differing widely, household composition, habits (including performance of daily activities performance) and power consumption also played an active role in the end result. This approach allowed to integrate qualitative and quantitative findings on indoor environmental quality (IEQ), energy use and households’ behavior. The objective data on the energy situation of the case studies not only is useful for the study, but also for potential enrollment in energy rehabilitation programs, such as the European Regional Development Fund (ERDF).This study was funded by the Spanish Ministry of the Economy’s National Programme for R&D + I Geared to Societal Challenges under the project BIA2017-83231-C2-1-R ‘Nueva herramienta integrada de evaluación para áreas urbanas vulnerables. Hacia la autosuficiencia energética y a favor de un modelo de habitabilidad biosaludable’ and ‘Habita_RES-(2018–2021)’.S

    Evaluación del confort térmico y la calidad de aire en centros docentes públicos en Madrid. Estudio de tres casos durante un año

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    Thermal comfort and air quality in schools are two parameters that must be studied in depth. They have consequences on the health of people whose bodies are developing and on the learning outcomes obtained in educational spaces. To analyze the interior environmental quality, the main parameters to consider are: thermal comfort and air quality. In this paper, data on CO2 concentration and temperature are taken in a total of nine classrooms belonging to three public schools during a year with the aim of analyzing the situation, determining the causes that influence the mentioned aspects and offering measures to correct the deviations recorded and improve the quality of the indoor environment in classrooms. The data obtained shows that CO2 concentrations exceed the established limit values for one third of the teaching time and that the temperature values are outside the comfort zone for more than two thirds of teaching time.El confort térmico y la calidad del aire en los centros docentes son dos parámetros que deben ser estudiados en profundidad. Tienen consecuencias en la salud de las personas cuyo cuerpo está en desarrollo y en los resultados de aprendizaje que se obtienen en los espacios educativos. En este trabajo se toman datos de concentración de CO2 y temperatura en un total de ocho aulas que pertenecen a tres centros docentes públicos durante un año con el objetivo de analizar la situación, determinar las causas que influyen en los aspectos mencionados y ofrecer medidas para corregir las desviaciones registradas y mejorar la calidad del ambiente interior en las aulas. Los datos obtenidos muestran que durante un tercio del tiempo lectivo las concentraciones de CO2 superan los valores límite establecidos y que durante más de dos tercios del tiempo lectivo los valores de temperatura se encuentran fuera de la zona de confort

    European Energy Poverty: Agenda Co-Creation and Knowledge Innovation (ENGAGER 2017-2021) Case study: Innovation and energy poverty policies

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    This document aims at contributing to the reflection of innovativeness of policies to alleviate energy poverty by providing a review of the literature that identifies and summarizes novel approaches and measures currently being implemented. This review is thus meant to offer a contribution to knowledge on the state-of-the-art concerning policies to tackle energy poverty, as well as a contribution to knowledge exchange across different contexts and disciplines on the most advanced strategies and solutions. In order to accomplish this, the review initially searched documents on energy poverty focused on innovation, according to a set of criteria for the selection of these documents. Yet, since it was found that there is a lack of research on what can be considered innovative or not in tackling energy poverty, a second method to assess innovation concerning this topic was employed. A short survey was conducted among the international network of experts related to this COST Action. Based on the results of this survey, which identified approximately 60 policies considered innovative by the experts, a procedure was developed to evaluate their characteristics. The outcome of this “innovation check” is a matrix that identifies the dimensions and sub-dimensions that are common to innovative policies to alleviate energy poverty.info:eu-repo/semantics/publishedVersio

    Inner wall filler as a singular and significant source of indoor radon pollution in heritage buildings: An exhalation method-based approach

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    Abstract The presence of radon in buildings is a matter of growing concern in the industry. A further layer of complexity is present in heritage buildings, where sources of exhalation other than those observed in more modern conventional buildings may render diagnosis and intervention even more difficult. This study explored the high exhalation rates originating in the inner fillers in thick elements such as bearing walls and structural floors and vaults characterising historic construction. They were found to be close to the values observed in soils and one to two orders of magnitude greater (range: 32.5 mBq/m2·s to 149.7 mBq/m2·s) than found in the construction materials themselves, such as granite. The radon emitted into building interiors by those members exhibited more or less uniform concentration profiles on all storeys, irrespective of elevation and consequently distance form the soil. Further to the results delivered by an accumulative model, the only explanation for the empirical findings is that the inner filler in structural members sources a substantial fraction of the high exhalation rates. That would open a new exploratory pathway for remedies that should necessarily address all emissions, rather than deeming the soil as the sole or primary source of radon gas. The issue is broached in this article on the grounds of a case study of the Tower of Hercules at Corunna, Spain, a building dating from Roman times and presently used as a museum and monument open to the public

    Selection of nature-based solutions to improve comfort in schools during heat waves

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    Climate change impacts particularly affect vulnerable populations such as children. Therefore, addressing the adaptation of educational buildings is crucial in avoiding these negative effects on school performance. In this paper, three educational buildings, located in Badajoz (Spain), Evora (Portugal) and Porto (Portugal), serve as pilot samples to study the suitability of nature-based solutions (NBS), chosen for each one of three climatic zones. The NBS selected include green roofs, vertical structures with vegetation to shade holes, outdoor trees and free-cooling ventilation. The scenarios of the different NBS implemented in the three models were simulated with the software EnergyPlus, which allows optimising the appropriate decision before renovation operations begin. The results obtained from the simulations suggest energy performance improvements after applying the most adequate NBS selection to each one of the three buildings tested. Particularly, a reduction in radiation on both roofs and facades is required in the case of Evora and Badajoz, where both climate zones have similar features, that is, warm and dry. While in Porto, milder and more humid than the former ones, it is very effective to operate mainly on the roof, complemented by small ventilation operations.The authors gratefully acknowledge the support of this work by the LIFE+ Programme under the responsibility of the Directorate General for the Environment of the European Commission through the agreement LIFE17 CCA/ES/00088, LIFE myBUILDINGisGREEN

    Compendium: On existing and missing links between energy poverty and other scholarly debates

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    ENGAGER Working Group 4 has just produced an extensive compendium on existing and missing links between energy poverty and other scholarly debates. The compendium is edited Ana Stojilovska (HU), Lidija Zivcic (SI), Ricardo Barbosa (PT), Katrin Grossmann (DE) and Rachel Guyet (FR), with contributions from 10 other authors from across Europe. The compendium is one of the most detailed and extensive reviews of its kind that have been published to date. In the introduction of the compendium, the authors note: We publish this work, undertaken between March 2019 and February 2019, in the midst of a huge worldwide health crisis that will alter life and living circumstances. We are aware that this crisis is likely to impact vulnerable people, among them the energy poor, in severe ways. We only start to understand how important energy is as a basis of living and of participation in society. Staying at home is only possible for those who have a home, and it is bearable only if energy can be used for cooking, heating – and communicating. We see this compendium as a living document that will profit from discussion, revision and updating.info:eu-repo/semantics/publishedVersio

    Pesticides in soil, groundwater and food in Latin America as part of one health.

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    We here report of a conference about "Pesticides in Soil, Groundwater and Food in Latin America as part of One Health" that took place at the "IV Seminario Internacional de Sanidad Agropecuaria (SISA)" in Varadero, Cuba, 8-12 May 2023. Researchers of Latin America (Argentina, Brazil, Chile, Costa Rica, Colombia, Cuba, Mexico) and Switzerland (workshop initiator) held presentations about occurrence and effects of pesticides on the environment, human health, the replacement of highly hazardous pesticides (HHP) by agroecological alternatives and the agri-food value chain. In a subsequent round table discussion, the presenters identified deficits, needs, interests and opportunities. According to them, the lack of awareness of pesticide use affects the health and safety of workers applying the chemicals. Despite Latin America representing the main agricultural area in the world with a very intense pesticide use, monitoring data of pesticides in soil, surface and groundwaters, food, as well as in humans are missing. Risks of pesticides to humans should be assessed so that authorities can withdraw or limit within "short time" the access to corresponding formulations on the market. Also, communication is not state of the art and should be improved as, e.g. the teaching of workers and farmers, how to correctly use and apply pesticides or the briefing of decision makers. Pollinators suffer from multiple stressors not the least due to pesticides, and alternatives are badly needed. On the technical side, the different analytical methods to determine residues of active ingredients and transformation products in matrices of concern should be harmonized among laboratories.Seven future actions and goals were identified to overcome the above deficits. Next steps after the publishing of this conference report are to harmonize and complete the information status of the presenters by exchanging the results/data already present. Therefore, a platform of interaction to address issues described above and to enhance collaboration shall be created. Samples of different matrices shall be exchanged to harmonize the chemical analysis and establish interlaboratory comparisons. Such activities might be facilitated by joining international associations or organizations, where researchers can offer their expertise, or by forming a new pesticide network for Central and South America that could present tailored projects to national and international organizations and funding agencies

    The critical role of trust in experiencing and coping with energy poverty : Evidence from across Europe

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    Trust is a fundamental ingredient of prosperous democracies. In Europe, trust in existing elected democratic institutions is fading while authoritarian nationalist movements grow. Experiences of neglect, ignorance, and inferiority are one explanation for this. This paper explores the link between the experiences of households in a state of energy poverty and their trust in institutions and social networks. Using qualitative data from ten different European countries, we show that a lack of trust in both public and private institutions is widespread among energy-poor households. Our interviewees show distrust in various dimensions. In their contacts with institutions, they report experiences of powerlessness, bad and unfair treatment, and feelings of inferiority. While some interviewees do trust single individuals within institutions, others trust only their own social networks and some have no trust in anyone. We further show how trust in networks or (people in) institutions can strengthen the coping capacities of energy-poor households while a lack of trust even cuts people off from the support they could attain and thus deepens their state of energy poverty.acceptedVersionPeer reviewe

    Spatiotemporal Characteristics of the Largest HIV-1 CRF02_AG Outbreak in Spain: Evidence for Onward Transmissions

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    Background and Aim: The circulating recombinant form 02_AG (CRF02_AG) is the predominant clade among the human immunodeficiency virus type-1 (HIV-1) non-Bs with a prevalence of 5.97% (95% Confidence Interval-CI: 5.41–6.57%) across Spain. Our aim was to estimate the levels of regional clustering for CRF02_AG and the spatiotemporal characteristics of the largest CRF02_AG subepidemic in Spain.Methods: We studied 396 CRF02_AG sequences obtained from HIV-1 diagnosed patients during 2000–2014 from 10 autonomous communities of Spain. Phylogenetic analysis was performed on the 391 CRF02_AG sequences along with all globally sampled CRF02_AG sequences (N = 3,302) as references. Phylodynamic and phylogeographic analysis was performed to the largest CRF02_AG monophyletic cluster by a Bayesian method in BEAST v1.8.0 and by reconstructing ancestral states using the criterion of parsimony in Mesquite v3.4, respectively.Results: The HIV-1 CRF02_AG prevalence differed across Spanish autonomous communities we sampled from (p < 0.001). Phylogenetic analysis revealed that 52.7% of the CRF02_AG sequences formed 56 monophyletic clusters, with a range of 2–79 sequences. The CRF02_AG regional dispersal differed across Spain (p = 0.003), as suggested by monophyletic clustering. For the largest monophyletic cluster (subepidemic) (N = 79), 49.4% of the clustered sequences originated from Madrid, while most sequences (51.9%) had been obtained from men having sex with men (MSM). Molecular clock analysis suggested that the origin (tMRCA) of the CRF02_AG subepidemic was in 2002 (median estimate; 95% Highest Posterior Density-HPD interval: 1999–2004). Additionally, we found significant clustering within the CRF02_AG subepidemic according to the ethnic origin.Conclusion: CRF02_AG has been introduced as a result of multiple introductions in Spain, following regional dispersal in several cases. We showed that CRF02_AG transmissions were mostly due to regional dispersal in Spain. The hot-spot for the largest CRF02_AG regional subepidemic in Spain was in Madrid associated with MSM transmission risk group. The existence of subepidemics suggest that several spillovers occurred from Madrid to other areas. CRF02_AG sequences from Hispanics were clustered in a separate subclade suggesting no linkage between the local and Hispanic subepidemics
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