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description Publicationkeyboard_double_arrow_right Other literature type , Journal , Article , Thesis 2017 Canada, Mexico, Canada, United States, United States, Canada, Canada, United StatesPublisher:University of British Columbia Authors: Nosek, Grace;doi: 10.14288/1.0355231
handle: 2429/62902
There is scientific consensus that anthropogenic climate change is occurring and that it has had and will continue to have profoundly negative social, economic, and environmental consequences. The US government has not taken sufficient action to mitigate the threat of dangerous climate change. Frustrated by the lack of action in the legislative and executive branches, climate advocates have turned to the judicial branch and litigation to advance their cause. Litigation is important not only for its ability to create substantive legal change, but also for its power to generate media coverage and shape public and political discourse. There is growing recognition of the important contributions psychology can make to the study and practice of law. Research in psychology helps illuminate why the US public has had trouble engaging with the science of climate change, understanding the risks posed by climate change, and feeling motivated to take corrective action. Research also shows that how a public health issue is framed powerfully shapes the public debate and policy prescriptions for that issue. This thesis examines how climate advocates can construct their litigation messaging in light of insights from psychological and framing theories to most effectively advance the climate movement in the US. I chose to analyze three climate change litigation strategies that might present an opportunity of overcoming the public’s psychological hurdles to engaging with climate change and offer a narrative on climate change that would resonate with the public. In conducting my analysis, I found that, if used effectively, the medium of litigation offers a unique opportunity to reframe climate change and overcome the public’s cognitive hurdles to perceiving the true dangers of climate change. The structure of litigation, which requires plaintiffs to trace their injuries—including economic, social, and health-related injuries—to the actions of defendants, allows climate advocates to leverage insights from framing and psychology to make their climate change narratives as salient as possible.
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For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Thesis 2012Embargo end date: 20 Sep 2012 CanadaPublisher:Université d'Ottawa / University of Ottawa Authors: Clarke, Kaila-Lea;doi: 10.20381/ruor-6032
handle: 10393/23296
This thesis examines the susceptibility of human health to climate-related stresses in the rural municipality of Addington Highlands, Ontario. Human health is sensitive to climatic variations and change, and public health systems play a role in managing climate-related risks. Canada is generally deemed to have considerable capacity to adapt to vulnerabilities associated with climate change, yet there is variability among communities in their exposure and ability to manage health risks. This thesis examines the health-related vulnerability of the community of Addington Highlands. Drawing upon data gained from key informant interviews and newspaper articles, as well as other secondary data sources, the thesis documents climate-related health risks, outlines the programs and services available to deal with those risks, and assesses the capacity of the community to adapt to future climate conditions and risks. Conditions such as storms, heat stress and forest fires currently present health risks in the area, and they are expected to become more prevalent with climate change. The health risks of Lyme disease, West Nile virus and algal blooms are likely to increase in the future as the climate continues to change. Adaptation to these risks is evident in several of Addington Highlands public health and emergency management programs. The community’s adaptive capacity is strengthened by its social networks and institutional flexibility, but it is constrained by its aging population, limits to the availability and access to health care services, and challenges relating to the retention of service providers. An important strategy to assist adaptation to climate change risks to health is the promotion of public awareness, a strategy to which this research contributes. This thesis research serves to identify and better understand vulnerabilities, and help stimulate actions toward preparing Addington Highlands for possible future climate-related risks.
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For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Other literature type , Report 2010 Canada, Canada, Mexico, Canada, United States, CanadaPublisher:The University of British Columbia Authors: Cancino, Karen;doi: 10.14288/1.0075500
handle: 2429/31711
The Urban Heat Island Effect has become one of the world’s leading urban environmental issues of this century. Urbanization has increased concerns about the UHIE, especially in terms of human health and a healthy functioning urban environment. The UHIE results in significant and sometimes dramatic increase in air temperature change between the urban environment and its surrounding areas. The most dramatic change to be seen is the alteration of the landscape, causing multiple interactions with people, different surface materials, atmospheric anomalies and the urban ecology. Mostly important is the heat island structure which extends from the ground to certain levels above ground, and the atmospheric interactions which in turn causes different thermal projections throughout the city. Thus the heat island effect is a contributing factor to a larger list of health problems which will only increase with the explosive growth of the population and the increasing impact of climate change. The only viable solution to this alteration of our environment is to implement better urban planning and for the ultimate expansion of green spaces that are made possible through new materials, technology and urban forestry. Urban forestry has come from being valued for its aesthetic quality, to being valued as an essential urban ecosystem. There is much more to our natural green spaces than imagined: they ameliorate our environment by giving us many resources that we need in any city. Maintaining urban forests and addressing changes to urban planning will become valuable steps in mitigating the UHIE problems for future generations; making natural environments a valuable component of any urban city should be a priority for the sustainability and future developments in an urban environment.
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For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article 2023 Spain Funded by:CIHR, EC | PREDIMED PLUSCIHR ,EC| PREDIMED PLUSGarcía, Silvia; Bouzas, Cristina; Mateos, David; Pastor, Rosario; Álvarez, Laura; Rubín, María; Martínez-González, Miguel Ángel; Salas-Salvadó, Jordi; Corella, Dolores; Goday Arnó, Albert; Martínez, J. Alfredo; Alonso-Gómez, Ángel María; Wärnberg, Julia; Vioque, Jesús; Romaguera, Dora; Lopez-Miranda, José; Estruch, Ramón; Tinahones, Francisco J..; Lapetra, José; Serra-Majem, Luís; Riquelme-Gallego, Blanca; Pintó, Xavier; Gaforio, José J; Matía-Martín, Pilar; Vidal, Josep; Daimiel, Lidia; Ros, Emilio; Bes-Rastrollo, Maira; Guillem-Saiz, Patricia; Nishi, Stephanie; Cabanes, Robert; Abete, Itziar; Goicolea-Güemez, Leire; Gómez-Gracia, Enrique; Signes-Pastor, Antonio José; Colom, Antoni; García-Rios, Antonio; Castro-Barquero, Sara; Fernández-García, José C..; Santos-Lozano, José Manuel; Vázquez, Zenaida; Sorlí, José V.; Pascual, Maria; Castañer, Olga; Zulet, M. Angeles; Vaquero-Luna, Jessica; Basterra Gortari, Francisco Javier; Babio, Nancy; Ciurana, Ramon; Martín, Vicente; Tur, Josep A.;Research related to sustainable diets is is highly relevant to provide better understanding of the impact of dietary intake on the health and the environment. To assess the association between the adherence to an energy-restricted Mediterranean diet and the amount of CO emitted in an older adult population. Using a cross-sectional design, the association between the adherence to an energy-reduced Mediterranean Diet (erMedDiet) score and dietary CO emissions in 6646 participants was assessed. Food intake and adherence to the erMedDiet was assessed using validated food frequency questionnaire and 17-item Mediterranean questionnaire. Sociodemographic characteristics were documented. Environmental impact was calculated through greenhouse gas emissions estimations, specifically CO emissions of each participant diet per day, using a European database. Participants were distributed in quartiles according to their estimated CO emissions expressed in kg/day: Q1 (≤2.01 kg CO), Q2 (2.02-2.34 kg CO), Q3 (2.35-2.79 kg CO) and Q4 (≥2.80 kg CO). More men than women induced higher dietary levels of CO emissions. Participants reporting higher consumption of vegetables, fruits, legumes, nuts, whole cereals, preferring white meat, and having less consumption of red meat were mostly emitting less kg of CO through diet. Participants with higher adherence to the Mediterranean Diet showed lower odds for dietary CO emissions: Q2 (OR 0.87; 95%CI: 0.76-1.00), Q3 (OR 0.69; 95%CI: 0.69-0.79) and Q4 (OR 0.48; 95%CI: 0.42-0.55) vs Q1 (reference). The Mediterranean diet can be environmentally protective since the higher the adherence to the Mediterranean diet, the lower total dietary CO emissions. Mediterranean Diet index may be used as a pollution level index.
Diposit Digital de D... arrow_drop_down Diposit Digital de Documents de la UABArticle . 2023License: CC BYData sources: Diposit Digital de Documents de la UABadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
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more_vert Diposit Digital de D... arrow_drop_down Diposit Digital de Documents de la UABArticle . 2023License: CC BYData sources: Diposit Digital de Documents de la UABadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
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For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Thesis 2021Embargo end date: 07 Sep 2021 CanadaPublisher:Université d'Ottawa / University of Ottawa Authors: Thiam, Moussa;doi: 10.20381/ruor-26858
handle: 10393/42638
Modernization has brought about steady increase in the consumption of goods and services by human societies across the globe, which mostly driven by both population growth and the change of individual living standards. This, of course, leads to an ever-increasing waste production that ends up in landfills and very often as a source of pollution on natural ecosystems, especially in the low and middle-income countries where waste management is almost inexistent. The management of waste streams is a huge challenge for developed countries as well, where societal and environmental impacts are visible despite massive investments in waste management. One of the most problematic waste materials is plastic, which can remain in nature for over 100 years without degradation, leading to serious environmental concerns. As one of the most significant innovations of the 20th century, plastic is a widely used and cost-effective material for many applications. After their useful lifetimes, their management is problematic. Thus, robust and innovative approaches of managing such waste material are needed in order to mitigate the problem. One of the innovative approaches of tackling the menace cause by plastic waste is through its incorporation into the construction materials. This thesis seeks to address this problem by exploring the use of melted plastic wastes (High Density Poly Ethylene, HDPE and Low Density Poly Ethylene, LDPE) as binder in developing new construction materials (mortar with melted plastic as the only binder, MPB and Plastic Waste Crete, PWC) as an alternative to partially replace traditional concrete and mortar, or finding other engineering uses for this type of waste. Worldwide, about 190 m3 of concrete is poured every second, which translates to 6 billion m3 per year and making it, one of the most widely used manufactured materials. However, the production of concrete requires water and cement. Cement is expensive, and its production contributes to the emission of environmentally polluting gases. Replacing this binding element with recycled plastic derivatives would have significant economic and environmental benefits. In addition to the elimination of cement cost, this will result in water savings, which is especially important for areas without fresh water scarcity. Some researchers have used plastics in concrete and mortars as additives and/or replacement for fine and coarse aggregates. In addition, different types of plastics have been used in bitumen as an additive to reduce construction cost and improve sustainability by adding value to wastes materials. However, there is paucity of technical information about the use of the melted HDPE and LDPE plastic wastes as the only binding phase in concrete- or mortar-like materials. Moreover, many parameters such as preparation conditions, field variables, constituent elements, and final applications have impacts on the performance of construction materials Thus, the key objective of this PhD research is to develop the mortar with plastic binder (MPB) and PlasticWasteCrete (PWC) by using molten HDPE and LDPE plastic wastes as the only binder as well as to investigate the engineering properties of these new types of construction materials. The plastic contents of 45%, 50%, 60% and 65% and HDPE to LDPE ratios of 40/60, 50/50, and 60/40 were selected for the experimental tests. Clean river sand was used as the only aggregate for the MPB, while both sand and gravel were used for the PWC. Various tests were then performed on prepared MPB and PWC samples at different curing times from early to advanced ages to assess their engineering properties. These tests were conducted in accordance with the ASTM standards to evaluate the mechanical properties (compressive strength and splitting tensile strength), permeability and density of the MPB and PWC materials. Additional tests were carried out to analyze the products at the microstructural level (optical microscope, SEM, MIP and thermogravimetric analysis) to gain an insight into the microstructural properties of the developed materials and how that affect their engineering properties. The compressive strength tests revealed the optimal plastic content for the MPB and PWC with the best strength performance. The average compressive strength values for various optimal formulations after 28 days were found to be in the range of 9 to 18 MPa. The splitting tensile strength for the new materials from 1 to 28 days of curing time, were found to be between 1 and 5 MPa. The average hardened density of the MPB and PWC is about 2 g/cm3, which makes them lightweight material according to RILEM classification. In addition, various absorption tests (capillary and immersion) were performed on different MPB and PWC samples, and the obtained results showed that they are porous materials having lower rate of absorption than the traditional cementitious materials (mortar, concrete). This observation was supported by the results from both MIP and SEM analyses. Finally, thermogravimetric analysis provided interesting details on the thermal decomposition of the new materials, with significant changes or mass loss for these products being observed only at temperatures higher than 300°C. The findings from this study suggest MPB and PWC made with melted plastic waste as the only binder have a promising potentials for use in construction. The research conducted in this PhD study offers a good understanding of the engineering properties of the materials as well as the optimal formulations that yield best performance in terms of strength and durability. In summary, it provides useful technical information and tools on the MPB and PWC that will contribute in setting guidelines on the optimal applications of these products in the field of construction in order to have safe, durable and cost-effective structures. Résumé Avec la modernisation de nos sociétés, les habitudes ont considérablement changé, ainsi, on observe une forte consommation des biens et services, due à l’augmentation de la population et l’amélioration de leurs conditions de vie. Ce qui conduit à une augmentation considérable des quantités des déchets qui terminent leurs cycles au niveau des décharges ou dans les océans/fleuves devenant ainsi une source de source de pollution des écosystèmes naturels, surtout dans les pays à revenu faible et intermédiaire avec des systèmes défaillants ou moins performants de gestion des déchets. La gestion des flux de déchets est aussi un défi pour certains pays développés, où les impacts sociaux et environnementaux sont visibles en dépit des investissements massifs dans ce secteur. Parmi ces déchets, nous avons les plastiques, l’une des innovations du 20e siècle avec des qualités versatiles et coût faible, se trouve partout dans nos vies quotidiennes. Après leur utilisation, les plastiques deviennent des déchets qui peuvent rester dans la nature plus de 100 ans sans aucune dégradation, avec des conséquences néfastes sur l’Homme et l’environnement. Ainsi, une approche robuste et innovante de gestion de ces déchets est nécessaire afin d'atténuer leurs impacts. L'une des approches innovantes pour réduire l’impact causé par les déchets plastiques consiste à les incorporer dans les matériaux de construction. Ainsi, le problème est abordé dans cette thèse en développant des technologies permettant de recycler les plastiques fondus comme liant dans les nouveaux matériaux de construction (MPB et PWC), afin d’offrir une alternative pour remplacer partiellement le béton / mortier traditionnel. Le béton est l’un des matériaux les plus utilisés au monde, avec environ 190 m3 coulés chaque seconde, correspondant à 6 milliards de m3 par an. Cependant, la production de béton nécessite de l'eau et du ciment. Le ciment coûte cher et sa production contribue à l'émission de gaz polluants l'environnement. Le remplacement d'une partie du béton traditionnel par un matériau à base des déchets plastique aura des avantages économiques, sociaux et environnementaux importants. Allant dans ce sens, certains chercheurs ont utilisé les plastiques dans le béton et le mortier comme additifs et / ou substituts des matériaux granulaires tels que le sable et le gravier. Aussi, différents types de plastiques ont été utilisé dans le bitume comme additif pour réduire les coûts de construction et améliorer la durabilité, ainsi contribuer à donner de la valeur aux déchets. Cependant, jusqu'à présent, il existe peu d’informations techniques sur l'utilisation de déchets plastiques (HDPE et LDPE) fondus comme seuls liants pour développer de nouveaux types de matériaux de construction. En plus, plusieurs facteurs (les conditions de préparation, les éléments constitutifs, les applications finales, etc.) ont un impact sur les caractéristiques des matériaux de construction. Ainsi, l'objectif de cette recherche doctorale est de développer des nouveaux matériaux de construction (MPB et PWC) en utilisant les déchets plastiques fondus (HDPE et LDPE) comme seul liant, puis déterminer les propriétés caractéristiques de ces matériaux afin de trouver la formulation optimale conduisant à la meilleure résistance. En plus de l'élimination du coût du ciment, cette technologie permet aussi de faire des économies d'eau, bénéfique surtout pour les zones avec des difficultés d'accès à l’eau potable. Cela contribuera à la réduction des coûts de la construction en utilisant les produits innovants comme alternative au béton / mortier conventionnel. Un vaste programme expérimental, comprenant des tests à petite et grande échelle, a été développé afin d'atteindre les objectifs de cette étude de doctorat. La campagne expérimentale a comporté différentes étapes comprenant la sélection des matériaux, la détermination de la formulation optimale et les conditions appropriées pour la préparation des matériaux susmentionnés. Par la suite, pour une meilleure compréhension du comportement technique et des propriétés du produit final, divers tests ont été effectué sur les matériaux préparés à différents temps de durcissement. Ces tests ont été menés conformément aux normes ASTM pour évaluer les propriétés mécaniques (résistance à la compression et à la traction), la perméabilité et la densité des nouveaux matériaux. Les expériences ont été approfondies en analysant les produits au niveau microstructural (microscope optique, SEM, MIP et analyse thermique) pour avoir un aperçu des propriétés microstructurales des matériaux développés et essayer de comprendre les relations avec leur comportement mécanique. Les essais de compression ont permis de trouver la teneur en plastique optimale pour les matériaux (MPB et PWC) avec les meilleures valeurs de résistance. Les résistances moyennes à la compression à 28 jours pour diverses formulations étaient comprises entre 9 et 18 MPa. La résistance à la traction par fendage des nouveaux matériaux entre 1 et 28 jours se situait entre 1 et 5 MPa. La densité moyenne du béton et mortier écologique est proche de 2 g / cm3, ils peuvent donc être considérés comme des matériaux légers selon la classification RILEM. De plus, divers tests d'absorption (capillaire et par immersion) ont été réalisé sur différents échantillons de MPB et PWC, les résultats obtenus ont montré qu'il s'agit de matériaux poreux ayant un taux d'absorption plus faible que les matériaux traditionnels contenant du ciment. Plusieurs analyses microstructurales ont été réalisées sur différents échantillons des nouveaux produits (MPB et PWC) et les matériaux cimentaires traditionnels ont été utilisés pour renforcer notre compréhension. Enfin, l'analyse thermique a fourni des détails intéressants sur la décomposition thermique de ces nouveaux matériaux ; des changements significatifs avec une perte de masse considérable ont été observés seulement pour des températures supérieures à 300 ° C. Les résultats de ces essais permettent d'acquérir une bonne compréhension des propriétés techniques des nouveaux matériaux (MPB et PWC) ainsi que de déterminer les teneurs optimales en plastique conduisant aux meilleures performances en termes de résistance et de durabilité. Ainsi, les recherches menées dans cette étude de doctorat fournissent des informations techniques et des outils utiles sur le MPB et le PWC; et contribueront à installer des bases pour guider les applications optimales de ces nouveaux produits dans le domaine de la construction afin d'avoir des structures sûres, durables et rentables.
uO Research (Univers... arrow_drop_down uO Research (University of Ottawa - uOttawa)Thesis . 2021License: CC BY NC NDFull-Text: http://hdl.handle.net/10393/42638Data sources: Bielefeld Academic Search Engine (BASE)add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
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more_vert uO Research (Univers... arrow_drop_down uO Research (University of Ottawa - uOttawa)Thesis . 2021License: CC BY NC NDFull-Text: http://hdl.handle.net/10393/42638Data sources: Bielefeld Academic Search Engine (BASE)add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
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For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Thesis 2018Embargo end date: 21 Nov 2018 CanadaPublisher:Université d'Ottawa / University of Ottawa Authors: Marushka, Lesya;doi: 10.20381/ruor-22706
handle: 10393/38453
Traditional food is fundamental for the cultural identity, mental and spiritual well-being, and physical and nutritional health of First Nations in Canada. Rapid environment changes including environmental contamination and degradation, climate change, urbanization and industry growth reduce the availability and diversity of traditional foods. This is concomitant with changing lifestyle and an increased prevalence of malnutrition, obesity, diabetes, and cardiovascular diseases. The goal of this thesis is to investigate the roles of traditional fish consumption for First Nations’ health in the complex interplays between environmental contaminant exposure, climate change, and food and nutrition security. Data collected from the First Nations Food Nutrition and Environment Study were used. The thesis is comprised of seven chapters presented in three sections. Section 1 addressed the importance of traditional fish consumption for food and nutritional security among First Nations in Canada. With increased income-related food insecurity, First Nations rely more on traditional foods including fish and participate more in fishing and other traditional practices. Nevertheless, many factors such as climate change, governmental restrictions, hydro and forestry operations continue to reduce the availability of traditional fish and access to traditional food sources, land and waterways. Section 2 explored the associations between locally-harvested fish consumption, long chain omega-3 fatty acid (n-3 FA) intake and dietary exposure to persistent organic pollutants (POP) with type 2 diabetes in First Nations in Canada. Dietary POP exposure was positively associated with the prevalence of type 2 diabetes whereas fish consumption (n-3 FA) showed protective dose-response associations. Furthermore, we found that relatively high POP exposure from fish may outweigh the protective associations of fish on type 2 diabetes. Therefore, the balance of risks and benefits associated with fish consumption is highly dependent on the regional POP concentrations in fish. Section 3 entailed studies on the nutritional benefits of seafood consumption and modelling potential impacts of the climate-related decline in seafood abundance on the nutritional quality of adult diets and cardiovascular health among coastal First Nations in British Columbia. We estimated that projected climate change may reduce the intakes of essential nutrients by 21%– 31% by 2050 relative to 2000. Moreover, hypothetical substitution of seafood with alternative non-traditional foods would not provide adequate amounts of nutrients. Reduced fish consumption and consequent n-3 FAs intake may increase the risk of cardiovascular diseases in First Nations. Our findings provide important information for communities, fishery governance, local resource managers and public health professionals to promote traditional food systems, nutritional health, food security, and food sovereignty in Canadian First Nations.
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For further information contact us at helpdesk@openaire.eu0 citations 0 popularity Average influence Average impulse Average Powered by BIP!
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For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Other literature type , Report 2014 United States, Canada, Canada, Mexico, Canada, CanadaPublisher:The University of British Columbia Authors: Peng, Yuan;doi: 10.14288/1.0075583
handle: 2429/50630
With the temperature rising caused by the global climate change, forest fire season has increased longer and fire severity in the Amazon has been more intense. Some extreme drought events in the Amazon in 2005 and 2010 caused severe fire activities during the fire season. The effects of climate change on forest fires in the Amazon have been discussed in the paper. Warming temperatures have increased the forest dry season; subsequent fires have higher intensity and severity, with fire season expansion in the Amazon forest. Some data and research proved that dry seasons would affect the fire season and fire activity. The consequence of forest fires in the Amazon on environmental conditions, economic development, and human health has been discussed in the paper as well. Greenhouse gas, timber products profits reduction, and harmful smoke release are the three major negative impacts caused by forest fires. Forest fire can produce a large amount of carbon dioxide into the atmosphere and release smoke, which makes environment conditions worse and can harm human health. Additional timber loss due to forest fire causes timber industry loss as well. What’s more, fire monitoring, sustainable management, law enforcement, and afforestation are suggested in the paper as solutions in the recommendations section.
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For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Thesis 2017Embargo end date: 09 Mar 2017 CanadaPublisher:Université d'Ottawa / University of Ottawa Authors: Larkin, Patricia Marguerite;doi: 10.20381/ruor-20164
handle: 10393/35881
Climate change is a risk issue of global proportions. Human health and environmental impacts are anticipated from hazards associated with changes in temperature and precipitation regimes, and climate extremes. Increased natural hazards include storms and flooding, extreme heat, drought, and wildfires. Reduced food and water quality and quantity, reduced air quality, new geographic range of infectious diseases, and increased exposure to ultra-violet radiation are also predicted. In order to make a measurable contribution to reducing carbon dioxide emissions at point source fossil fuel and industrial process sites that contribute to climate change, estimates suggest that up to 3,000 dedicated large scale carbon capture and geological sequestration (CCS) projects will be necessary by 2050. Integrated projects include carbon dioxide capture; compression into a supercritical stream; transport, most often by pipeline; deep injection at wellheads; and sequestration in suitable saline aquifer geological formations, usually 800 metres or more below the earth’s surface. In implementing CCS as part of an overall climate change mitigation strategy, it is important to note that population health and environmental risks are associated with each of these value chain components of integrated projects. Based on an assessment of existing regulatory and non-regulatory guidance for risk assessment/risk management (RA/RM), an analysis of the application, assessment, and approval process for four large scale Canadian projects, and findings from a structured expert elicitation focused on hazard and risk issues in injection and storage and risk management of low probability high impact events, this research developed an Integrated Risk Management Framework (IRMF) for CCS in the Canadian context. The IRMF is a step-wise systematic process for RA/RM during the life of a project, including engagement with wide ranging government and non-government partners that would contribute to a determination of acceptable risk and risk control options. The execution of the IRMF is an intervention that could reduce local hazards and associated risks in terms of likelihood and consequence, as well as identify and document risk management that could underpin broad acceptance of CCS as a climate change mitigation technology. This would thereby also have an important part in protecting global population health and wellbeing in the long term. Indeed, diverse stakeholders could be unforgiving if hazard assessment and risk management in CCS is considered insufficient, leading to ‘pushback’ that could affect future implementation scenarios. On the other hand, RA/RM done right could favourably impact public perception of CCS, in turn instilling confidence, public acceptance, and ongoing support for the benefit of populations worldwide. This thesis is composed of an introduction to the research problem, including a population health conceptual framework for the IRMF, followed by five manuscripts, and concluding with a discussion about other barriers to CCS project development, and a risk management policy scenario for both the present time and during the 2017-2030 implementation period.
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For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Thesis 2019Embargo end date: 31 May 2019 CanadaPublisher:Université d'Ottawa / University of Ottawa Authors: Hafizi, Kaamel;doi: 10.20381/ruor-23512
handle: 10393/39265
Objectives: Most weight loss medications target reductions in energy intake while neglecting energy expenditure, a critical predictor of weight loss/regain. This pilot study examined the effect of short-acting methylphenidate (MPH) on resting energy expenditure (REE), thermic effect of food (TEF), physical activity energy expenditure (PAEE), and how changes in energy expenditure relate to changes in body composition in youth and adults living with obesity. Methods: This study was a randomized, double-blind, placebo-controlled two-parallel arm study. In total, 19 participants were screened, of which 14 participants were randomized into the study, but complete data was only collected for 12, and only analyzed for 10 participants. Those 10 participants aged 28.8 ± 6.9 yrs. (5 Male, 5 Female) were randomized to receive either MPH (0.5 mg/kg) (n = 5) or placebo (n =5) twice daily for 60 days. Participants’ REE and TEF (indirect calorimetry), were measured at baseline (no drug/placebo), and day 60 post-treatment (drug/placebo). Participants’ PAEE (Actical) was measured between screening and baseline for a 1-week period (no drug/placebo), and on day 53 for a 1-week period (drug/placebo). Participants’ anthropometrics were measured using DEXA at baseline, and day 60 post-treatment. Results: From baseline to day 60, MPH showed a relative difference to placebo in relative REE (Relative REE: F(1, 8) = 4.235, p = 0.074, d = 0.83, 2 = 0.346) of 10%, evidenced by a 6% increase in relative REE kcal/kg (18.53 ± 1.97 Kcal/day/kg at baseline, 19.71 ± 2.52 Kcal/day/kg at final) for the MPH group, and a 4% decrease (19.08 2.36 Kcal/day/kg at baseline, 18.26 ± 2.04 Kcal/day/kg at final) in placebo, translating to moderate-effect size (Cohen’s d=0.63) favouring MPH. From baseline to day 60, there were no significant differences between groups on changes in TEF (TEF AUC: F(1, 8) = 0.079, p = 0.785, d = 0.15, 2 = 0.010) or any PAEE variables such as sedentary behavior (SB: F (1, 8) = 0.455, p = 0.52, d = 0.02, 2 = 0.054), light physical activity (LPA: F (1, 8) = 0.504, p = 0.50, d = 0.16, 2 = 0.059), moderate physical activity (MPA: F (1, 8) = 0.281, p = 0.61, d = 0.19, 2 = 0.034), moderate-to-vigorous physical activity (MVPA: F (1, 8) = 0.120, p = 0.74, d = 0.15, 2 = 0.015), or vigorous physical activity (VPA: F (1, 8) = 3.495, p = 0.098, d = 0.91, 2 = 0.304) . Mean change in body weight (kg) resulted in a weight loss of roughly -2.66 ± 2.00 kg in the MPH group and -1.64 ± 1.41 kg in the placebo group, differences that were not statistically significant. Mean change in both groups for body fat% of -0.33 ± 2.08 %, mean change in fat mass of -1.05 ± 2.59 kg, and finally a mean change in fat-free mass of -0.06 ± 1.19 kg was reported. Changes in relative REE were inversely correlated with changes in body weight (r = -0.599, p = 0.067), body fat (r = -0.524, p = 0.12) and fat mass (r = -0.599, p = 0.096). These associations were stronger in the MPH group. Conclusions: Our data suggests that MPH administration may lead to a meaningful increase in relative REE, and these suggested changes were associated with reductions in adiposity among individuals with obesity. These preliminary findings suggest that MPH should be further examined using a larger sample size and study duration to determine its effectiveness in promoting weight loss and maintenance of weight loss in individuals with obesity, a population at high risk of morbidity and premature mortality.
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For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Other literature type , Report 2015 Canada, Canada, Mexico, United States, Canada, CanadaPublisher:The University of British Columbia Benson, George; Haber, Andrea; Lao, Aaron; Krahn, Alix; Marteleira, Michelle; Trujillo, Maria;doi: 10.14288/1.0348240
handle: 2429/61941
Baliwag currently faces various impacts from climate change. Baliwag should focus on adaptation in response to climate change. [Images omitted] The Philippines is a minor cause of climate change, but faces major impacts. Baliwag must focus on adapting to these impacts. This report combines the voices of Baliwag citizens, the strengths of the community, and the authors’ outside perspective to to produce locally relevant adaptation recommendations. Summary of Recommendations Human Health & Security-- Continue livelihood programs in resettlement areas Plant local, non- invasive tree species on the sidewalks and roads for shade Host IECs on heat-related health issues. Food Security--Upgrade and maintain irrigation canals Continue to implement educational programs for farmers Establish a food systems plan and goals for creating food security. Water Sufficiency--Improve water infrastructure maintenance through institutional coordination Pursue water conservation measures through jointly-created IECs. Infrastructure--Continue to prioritize upgrading stormwater drainage infrastructure Identify and protect vulnerable infrastructure Decrease heat island effect through shade creation strategies. Industry--Train businesses, especially small and medium enterprises, and provide resources to be climate adaptive Leverage new and existing corporate social responsibility policies for adaptation. Knowledge & Capacity Building--Build staff and community knowledge on climate change Standardize and increase data collection Increase institutional collaboration with a climate Technical Working Group. These recommended climate adaptations can be taken by all actors in Baliwag, from the municipal staff, to individual businesses. Baliwag is already adapting, and will only continue to become more resilient.
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description Publicationkeyboard_double_arrow_right Other literature type , Journal , Article , Thesis 2017 Canada, Mexico, Canada, United States, United States, Canada, Canada, United StatesPublisher:University of British Columbia Authors: Nosek, Grace;doi: 10.14288/1.0355231
handle: 2429/62902
There is scientific consensus that anthropogenic climate change is occurring and that it has had and will continue to have profoundly negative social, economic, and environmental consequences. The US government has not taken sufficient action to mitigate the threat of dangerous climate change. Frustrated by the lack of action in the legislative and executive branches, climate advocates have turned to the judicial branch and litigation to advance their cause. Litigation is important not only for its ability to create substantive legal change, but also for its power to generate media coverage and shape public and political discourse. There is growing recognition of the important contributions psychology can make to the study and practice of law. Research in psychology helps illuminate why the US public has had trouble engaging with the science of climate change, understanding the risks posed by climate change, and feeling motivated to take corrective action. Research also shows that how a public health issue is framed powerfully shapes the public debate and policy prescriptions for that issue. This thesis examines how climate advocates can construct their litigation messaging in light of insights from psychological and framing theories to most effectively advance the climate movement in the US. I chose to analyze three climate change litigation strategies that might present an opportunity of overcoming the public’s psychological hurdles to engaging with climate change and offer a narrative on climate change that would resonate with the public. In conducting my analysis, I found that, if used effectively, the medium of litigation offers a unique opportunity to reframe climate change and overcome the public’s cognitive hurdles to perceiving the true dangers of climate change. The structure of litigation, which requires plaintiffs to trace their injuries—including economic, social, and health-related injuries—to the actions of defendants, allows climate advocates to leverage insights from framing and psychology to make their climate change narratives as salient as possible.
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For further information contact us at helpdesk@openaire.euAccess Routesgold 3 citations 3 popularity Average influence Average impulse Average Powered by BIP!
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For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Thesis 2012Embargo end date: 20 Sep 2012 CanadaPublisher:Université d'Ottawa / University of Ottawa Authors: Clarke, Kaila-Lea;doi: 10.20381/ruor-6032
handle: 10393/23296
This thesis examines the susceptibility of human health to climate-related stresses in the rural municipality of Addington Highlands, Ontario. Human health is sensitive to climatic variations and change, and public health systems play a role in managing climate-related risks. Canada is generally deemed to have considerable capacity to adapt to vulnerabilities associated with climate change, yet there is variability among communities in their exposure and ability to manage health risks. This thesis examines the health-related vulnerability of the community of Addington Highlands. Drawing upon data gained from key informant interviews and newspaper articles, as well as other secondary data sources, the thesis documents climate-related health risks, outlines the programs and services available to deal with those risks, and assesses the capacity of the community to adapt to future climate conditions and risks. Conditions such as storms, heat stress and forest fires currently present health risks in the area, and they are expected to become more prevalent with climate change. The health risks of Lyme disease, West Nile virus and algal blooms are likely to increase in the future as the climate continues to change. Adaptation to these risks is evident in several of Addington Highlands public health and emergency management programs. The community’s adaptive capacity is strengthened by its social networks and institutional flexibility, but it is constrained by its aging population, limits to the availability and access to health care services, and challenges relating to the retention of service providers. An important strategy to assist adaptation to climate change risks to health is the promotion of public awareness, a strategy to which this research contributes. This thesis research serves to identify and better understand vulnerabilities, and help stimulate actions toward preparing Addington Highlands for possible future climate-related risks.
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For further information contact us at helpdesk@openaire.eu0 citations 0 popularity Average influence Average impulse Average Powered by BIP!
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For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Other literature type , Report 2010 Canada, Canada, Mexico, Canada, United States, CanadaPublisher:The University of British Columbia Authors: Cancino, Karen;doi: 10.14288/1.0075500
handle: 2429/31711
The Urban Heat Island Effect has become one of the world’s leading urban environmental issues of this century. Urbanization has increased concerns about the UHIE, especially in terms of human health and a healthy functioning urban environment. The UHIE results in significant and sometimes dramatic increase in air temperature change between the urban environment and its surrounding areas. The most dramatic change to be seen is the alteration of the landscape, causing multiple interactions with people, different surface materials, atmospheric anomalies and the urban ecology. Mostly important is the heat island structure which extends from the ground to certain levels above ground, and the atmospheric interactions which in turn causes different thermal projections throughout the city. Thus the heat island effect is a contributing factor to a larger list of health problems which will only increase with the explosive growth of the population and the increasing impact of climate change. The only viable solution to this alteration of our environment is to implement better urban planning and for the ultimate expansion of green spaces that are made possible through new materials, technology and urban forestry. Urban forestry has come from being valued for its aesthetic quality, to being valued as an essential urban ecosystem. There is much more to our natural green spaces than imagined: they ameliorate our environment by giving us many resources that we need in any city. Maintaining urban forests and addressing changes to urban planning will become valuable steps in mitigating the UHIE problems for future generations; making natural environments a valuable component of any urban city should be a priority for the sustainability and future developments in an urban environment.
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For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article 2023 Spain Funded by:CIHR, EC | PREDIMED PLUSCIHR ,EC| PREDIMED PLUSGarcía, Silvia; Bouzas, Cristina; Mateos, David; Pastor, Rosario; Álvarez, Laura; Rubín, María; Martínez-González, Miguel Ángel; Salas-Salvadó, Jordi; Corella, Dolores; Goday Arnó, Albert; Martínez, J. Alfredo; Alonso-Gómez, Ángel María; Wärnberg, Julia; Vioque, Jesús; Romaguera, Dora; Lopez-Miranda, José; Estruch, Ramón; Tinahones, Francisco J..; Lapetra, José; Serra-Majem, Luís; Riquelme-Gallego, Blanca; Pintó, Xavier; Gaforio, José J; Matía-Martín, Pilar; Vidal, Josep; Daimiel, Lidia; Ros, Emilio; Bes-Rastrollo, Maira; Guillem-Saiz, Patricia; Nishi, Stephanie; Cabanes, Robert; Abete, Itziar; Goicolea-Güemez, Leire; Gómez-Gracia, Enrique; Signes-Pastor, Antonio José; Colom, Antoni; García-Rios, Antonio; Castro-Barquero, Sara; Fernández-García, José C..; Santos-Lozano, José Manuel; Vázquez, Zenaida; Sorlí, José V.; Pascual, Maria; Castañer, Olga; Zulet, M. Angeles; Vaquero-Luna, Jessica; Basterra Gortari, Francisco Javier; Babio, Nancy; Ciurana, Ramon; Martín, Vicente; Tur, Josep A.;Research related to sustainable diets is is highly relevant to provide better understanding of the impact of dietary intake on the health and the environment. To assess the association between the adherence to an energy-restricted Mediterranean diet and the amount of CO emitted in an older adult population. Using a cross-sectional design, the association between the adherence to an energy-reduced Mediterranean Diet (erMedDiet) score and dietary CO emissions in 6646 participants was assessed. Food intake and adherence to the erMedDiet was assessed using validated food frequency questionnaire and 17-item Mediterranean questionnaire. Sociodemographic characteristics were documented. Environmental impact was calculated through greenhouse gas emissions estimations, specifically CO emissions of each participant diet per day, using a European database. Participants were distributed in quartiles according to their estimated CO emissions expressed in kg/day: Q1 (≤2.01 kg CO), Q2 (2.02-2.34 kg CO), Q3 (2.35-2.79 kg CO) and Q4 (≥2.80 kg CO). More men than women induced higher dietary levels of CO emissions. Participants reporting higher consumption of vegetables, fruits, legumes, nuts, whole cereals, preferring white meat, and having less consumption of red meat were mostly emitting less kg of CO through diet. Participants with higher adherence to the Mediterranean Diet showed lower odds for dietary CO emissions: Q2 (OR 0.87; 95%CI: 0.76-1.00), Q3 (OR 0.69; 95%CI: 0.69-0.79) and Q4 (OR 0.48; 95%CI: 0.42-0.55) vs Q1 (reference). The Mediterranean diet can be environmentally protective since the higher the adherence to the Mediterranean diet, the lower total dietary CO emissions. Mediterranean Diet index may be used as a pollution level index.
Diposit Digital de D... arrow_drop_down Diposit Digital de Documents de la UABArticle . 2023License: CC BYData sources: Diposit Digital de Documents de la UABadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
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more_vert Diposit Digital de D... arrow_drop_down Diposit Digital de Documents de la UABArticle . 2023License: CC BYData sources: Diposit Digital de Documents de la UABadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
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For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Thesis 2021Embargo end date: 07 Sep 2021 CanadaPublisher:Université d'Ottawa / University of Ottawa Authors: Thiam, Moussa;doi: 10.20381/ruor-26858
handle: 10393/42638
Modernization has brought about steady increase in the consumption of goods and services by human societies across the globe, which mostly driven by both population growth and the change of individual living standards. This, of course, leads to an ever-increasing waste production that ends up in landfills and very often as a source of pollution on natural ecosystems, especially in the low and middle-income countries where waste management is almost inexistent. The management of waste streams is a huge challenge for developed countries as well, where societal and environmental impacts are visible despite massive investments in waste management. One of the most problematic waste materials is plastic, which can remain in nature for over 100 years without degradation, leading to serious environmental concerns. As one of the most significant innovations of the 20th century, plastic is a widely used and cost-effective material for many applications. After their useful lifetimes, their management is problematic. Thus, robust and innovative approaches of managing such waste material are needed in order to mitigate the problem. One of the innovative approaches of tackling the menace cause by plastic waste is through its incorporation into the construction materials. This thesis seeks to address this problem by exploring the use of melted plastic wastes (High Density Poly Ethylene, HDPE and Low Density Poly Ethylene, LDPE) as binder in developing new construction materials (mortar with melted plastic as the only binder, MPB and Plastic Waste Crete, PWC) as an alternative to partially replace traditional concrete and mortar, or finding other engineering uses for this type of waste. Worldwide, about 190 m3 of concrete is poured every second, which translates to 6 billion m3 per year and making it, one of the most widely used manufactured materials. However, the production of concrete requires water and cement. Cement is expensive, and its production contributes to the emission of environmentally polluting gases. Replacing this binding element with recycled plastic derivatives would have significant economic and environmental benefits. In addition to the elimination of cement cost, this will result in water savings, which is especially important for areas without fresh water scarcity. Some researchers have used plastics in concrete and mortars as additives and/or replacement for fine and coarse aggregates. In addition, different types of plastics have been used in bitumen as an additive to reduce construction cost and improve sustainability by adding value to wastes materials. However, there is paucity of technical information about the use of the melted HDPE and LDPE plastic wastes as the only binding phase in concrete- or mortar-like materials. Moreover, many parameters such as preparation conditions, field variables, constituent elements, and final applications have impacts on the performance of construction materials Thus, the key objective of this PhD research is to develop the mortar with plastic binder (MPB) and PlasticWasteCrete (PWC) by using molten HDPE and LDPE plastic wastes as the only binder as well as to investigate the engineering properties of these new types of construction materials. The plastic contents of 45%, 50%, 60% and 65% and HDPE to LDPE ratios of 40/60, 50/50, and 60/40 were selected for the experimental tests. Clean river sand was used as the only aggregate for the MPB, while both sand and gravel were used for the PWC. Various tests were then performed on prepared MPB and PWC samples at different curing times from early to advanced ages to assess their engineering properties. These tests were conducted in accordance with the ASTM standards to evaluate the mechanical properties (compressive strength and splitting tensile strength), permeability and density of the MPB and PWC materials. Additional tests were carried out to analyze the products at the microstructural level (optical microscope, SEM, MIP and thermogravimetric analysis) to gain an insight into the microstructural properties of the developed materials and how that affect their engineering properties. The compressive strength tests revealed the optimal plastic content for the MPB and PWC with the best strength performance. The average compressive strength values for various optimal formulations after 28 days were found to be in the range of 9 to 18 MPa. The splitting tensile strength for the new materials from 1 to 28 days of curing time, were found to be between 1 and 5 MPa. The average hardened density of the MPB and PWC is about 2 g/cm3, which makes them lightweight material according to RILEM classification. In addition, various absorption tests (capillary and immersion) were performed on different MPB and PWC samples, and the obtained results showed that they are porous materials having lower rate of absorption than the traditional cementitious materials (mortar, concrete). This observation was supported by the results from both MIP and SEM analyses. Finally, thermogravimetric analysis provided interesting details on the thermal decomposition of the new materials, with significant changes or mass loss for these products being observed only at temperatures higher than 300°C. The findings from this study suggest MPB and PWC made with melted plastic waste as the only binder have a promising potentials for use in construction. The research conducted in this PhD study offers a good understanding of the engineering properties of the materials as well as the optimal formulations that yield best performance in terms of strength and durability. In summary, it provides useful technical information and tools on the MPB and PWC that will contribute in setting guidelines on the optimal applications of these products in the field of construction in order to have safe, durable and cost-effective structures. Résumé Avec la modernisation de nos sociétés, les habitudes ont considérablement changé, ainsi, on observe une forte consommation des biens et services, due à l’augmentation de la population et l’amélioration de leurs conditions de vie. Ce qui conduit à une augmentation considérable des quantités des déchets qui terminent leurs cycles au niveau des décharges ou dans les océans/fleuves devenant ainsi une source de source de pollution des écosystèmes naturels, surtout dans les pays à revenu faible et intermédiaire avec des systèmes défaillants ou moins performants de gestion des déchets. La gestion des flux de déchets est aussi un défi pour certains pays développés, où les impacts sociaux et environnementaux sont visibles en dépit des investissements massifs dans ce secteur. Parmi ces déchets, nous avons les plastiques, l’une des innovations du 20e siècle avec des qualités versatiles et coût faible, se trouve partout dans nos vies quotidiennes. Après leur utilisation, les plastiques deviennent des déchets qui peuvent rester dans la nature plus de 100 ans sans aucune dégradation, avec des conséquences néfastes sur l’Homme et l’environnement. Ainsi, une approche robuste et innovante de gestion de ces déchets est nécessaire afin d'atténuer leurs impacts. L'une des approches innovantes pour réduire l’impact causé par les déchets plastiques consiste à les incorporer dans les matériaux de construction. Ainsi, le problème est abordé dans cette thèse en développant des technologies permettant de recycler les plastiques fondus comme liant dans les nouveaux matériaux de construction (MPB et PWC), afin d’offrir une alternative pour remplacer partiellement le béton / mortier traditionnel. Le béton est l’un des matériaux les plus utilisés au monde, avec environ 190 m3 coulés chaque seconde, correspondant à 6 milliards de m3 par an. Cependant, la production de béton nécessite de l'eau et du ciment. Le ciment coûte cher et sa production contribue à l'émission de gaz polluants l'environnement. Le remplacement d'une partie du béton traditionnel par un matériau à base des déchets plastique aura des avantages économiques, sociaux et environnementaux importants. Allant dans ce sens, certains chercheurs ont utilisé les plastiques dans le béton et le mortier comme additifs et / ou substituts des matériaux granulaires tels que le sable et le gravier. Aussi, différents types de plastiques ont été utilisé dans le bitume comme additif pour réduire les coûts de construction et améliorer la durabilité, ainsi contribuer à donner de la valeur aux déchets. Cependant, jusqu'à présent, il existe peu d’informations techniques sur l'utilisation de déchets plastiques (HDPE et LDPE) fondus comme seuls liants pour développer de nouveaux types de matériaux de construction. En plus, plusieurs facteurs (les conditions de préparation, les éléments constitutifs, les applications finales, etc.) ont un impact sur les caractéristiques des matériaux de construction. Ainsi, l'objectif de cette recherche doctorale est de développer des nouveaux matériaux de construction (MPB et PWC) en utilisant les déchets plastiques fondus (HDPE et LDPE) comme seul liant, puis déterminer les propriétés caractéristiques de ces matériaux afin de trouver la formulation optimale conduisant à la meilleure résistance. En plus de l'élimination du coût du ciment, cette technologie permet aussi de faire des économies d'eau, bénéfique surtout pour les zones avec des difficultés d'accès à l’eau potable. Cela contribuera à la réduction des coûts de la construction en utilisant les produits innovants comme alternative au béton / mortier conventionnel. Un vaste programme expérimental, comprenant des tests à petite et grande échelle, a été développé afin d'atteindre les objectifs de cette étude de doctorat. La campagne expérimentale a comporté différentes étapes comprenant la sélection des matériaux, la détermination de la formulation optimale et les conditions appropriées pour la préparation des matériaux susmentionnés. Par la suite, pour une meilleure compréhension du comportement technique et des propriétés du produit final, divers tests ont été effectué sur les matériaux préparés à différents temps de durcissement. Ces tests ont été menés conformément aux normes ASTM pour évaluer les propriétés mécaniques (résistance à la compression et à la traction), la perméabilité et la densité des nouveaux matériaux. Les expériences ont été approfondies en analysant les produits au niveau microstructural (microscope optique, SEM, MIP et analyse thermique) pour avoir un aperçu des propriétés microstructurales des matériaux développés et essayer de comprendre les relations avec leur comportement mécanique. Les essais de compression ont permis de trouver la teneur en plastique optimale pour les matériaux (MPB et PWC) avec les meilleures valeurs de résistance. Les résistances moyennes à la compression à 28 jours pour diverses formulations étaient comprises entre 9 et 18 MPa. La résistance à la traction par fendage des nouveaux matériaux entre 1 et 28 jours se situait entre 1 et 5 MPa. La densité moyenne du béton et mortier écologique est proche de 2 g / cm3, ils peuvent donc être considérés comme des matériaux légers selon la classification RILEM. De plus, divers tests d'absorption (capillaire et par immersion) ont été réalisé sur différents échantillons de MPB et PWC, les résultats obtenus ont montré qu'il s'agit de matériaux poreux ayant un taux d'absorption plus faible que les matériaux traditionnels contenant du ciment. Plusieurs analyses microstructurales ont été réalisées sur différents échantillons des nouveaux produits (MPB et PWC) et les matériaux cimentaires traditionnels ont été utilisés pour renforcer notre compréhension. Enfin, l'analyse thermique a fourni des détails intéressants sur la décomposition thermique de ces nouveaux matériaux ; des changements significatifs avec une perte de masse considérable ont été observés seulement pour des températures supérieures à 300 ° C. Les résultats de ces essais permettent d'acquérir une bonne compréhension des propriétés techniques des nouveaux matériaux (MPB et PWC) ainsi que de déterminer les teneurs optimales en plastique conduisant aux meilleures performances en termes de résistance et de durabilité. Ainsi, les recherches menées dans cette étude de doctorat fournissent des informations techniques et des outils utiles sur le MPB et le PWC; et contribueront à installer des bases pour guider les applications optimales de ces nouveaux produits dans le domaine de la construction afin d'avoir des structures sûres, durables et rentables.
uO Research (Univers... arrow_drop_down uO Research (University of Ottawa - uOttawa)Thesis . 2021License: CC BY NC NDFull-Text: http://hdl.handle.net/10393/42638Data sources: Bielefeld Academic Search Engine (BASE)add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
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more_vert uO Research (Univers... arrow_drop_down uO Research (University of Ottawa - uOttawa)Thesis . 2021License: CC BY NC NDFull-Text: http://hdl.handle.net/10393/42638Data sources: Bielefeld Academic Search Engine (BASE)add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
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For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Thesis 2018Embargo end date: 21 Nov 2018 CanadaPublisher:Université d'Ottawa / University of Ottawa Authors: Marushka, Lesya;doi: 10.20381/ruor-22706
handle: 10393/38453
Traditional food is fundamental for the cultural identity, mental and spiritual well-being, and physical and nutritional health of First Nations in Canada. Rapid environment changes including environmental contamination and degradation, climate change, urbanization and industry growth reduce the availability and diversity of traditional foods. This is concomitant with changing lifestyle and an increased prevalence of malnutrition, obesity, diabetes, and cardiovascular diseases. The goal of this thesis is to investigate the roles of traditional fish consumption for First Nations’ health in the complex interplays between environmental contaminant exposure, climate change, and food and nutrition security. Data collected from the First Nations Food Nutrition and Environment Study were used. The thesis is comprised of seven chapters presented in three sections. Section 1 addressed the importance of traditional fish consumption for food and nutritional security among First Nations in Canada. With increased income-related food insecurity, First Nations rely more on traditional foods including fish and participate more in fishing and other traditional practices. Nevertheless, many factors such as climate change, governmental restrictions, hydro and forestry operations continue to reduce the availability of traditional fish and access to traditional food sources, land and waterways. Section 2 explored the associations between locally-harvested fish consumption, long chain omega-3 fatty acid (n-3 FA) intake and dietary exposure to persistent organic pollutants (POP) with type 2 diabetes in First Nations in Canada. Dietary POP exposure was positively associated with the prevalence of type 2 diabetes whereas fish consumption (n-3 FA) showed protective dose-response associations. Furthermore, we found that relatively high POP exposure from fish may outweigh the protective associations of fish on type 2 diabetes. Therefore, the balance of risks and benefits associated with fish consumption is highly dependent on the regional POP concentrations in fish. Section 3 entailed studies on the nutritional benefits of seafood consumption and modelling potential impacts of the climate-related decline in seafood abundance on the nutritional quality of adult diets and cardiovascular health among coastal First Nations in British Columbia. We estimated that projected climate change may reduce the intakes of essential nutrients by 21%– 31% by 2050 relative to 2000. Moreover, hypothetical substitution of seafood with alternative non-traditional foods would not provide adequate amounts of nutrients. Reduced fish consumption and consequent n-3 FAs intake may increase the risk of cardiovascular diseases in First Nations. Our findings provide important information for communities, fishery governance, local resource managers and public health professionals to promote traditional food systems, nutritional health, food security, and food sovereignty in Canadian First Nations.
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For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Other literature type , Report 2014 United States, Canada, Canada, Mexico, Canada, CanadaPublisher:The University of British Columbia Authors: Peng, Yuan;doi: 10.14288/1.0075583
handle: 2429/50630
With the temperature rising caused by the global climate change, forest fire season has increased longer and fire severity in the Amazon has been more intense. Some extreme drought events in the Amazon in 2005 and 2010 caused severe fire activities during the fire season. The effects of climate change on forest fires in the Amazon have been discussed in the paper. Warming temperatures have increased the forest dry season; subsequent fires have higher intensity and severity, with fire season expansion in the Amazon forest. Some data and research proved that dry seasons would affect the fire season and fire activity. The consequence of forest fires in the Amazon on environmental conditions, economic development, and human health has been discussed in the paper as well. Greenhouse gas, timber products profits reduction, and harmful smoke release are the three major negative impacts caused by forest fires. Forest fire can produce a large amount of carbon dioxide into the atmosphere and release smoke, which makes environment conditions worse and can harm human health. Additional timber loss due to forest fire causes timber industry loss as well. What’s more, fire monitoring, sustainable management, law enforcement, and afforestation are suggested in the paper as solutions in the recommendations section.
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For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Thesis 2017Embargo end date: 09 Mar 2017 CanadaPublisher:Université d'Ottawa / University of Ottawa Authors: Larkin, Patricia Marguerite;doi: 10.20381/ruor-20164
handle: 10393/35881
Climate change is a risk issue of global proportions. Human health and environmental impacts are anticipated from hazards associated with changes in temperature and precipitation regimes, and climate extremes. Increased natural hazards include storms and flooding, extreme heat, drought, and wildfires. Reduced food and water quality and quantity, reduced air quality, new geographic range of infectious diseases, and increased exposure to ultra-violet radiation are also predicted. In order to make a measurable contribution to reducing carbon dioxide emissions at point source fossil fuel and industrial process sites that contribute to climate change, estimates suggest that up to 3,000 dedicated large scale carbon capture and geological sequestration (CCS) projects will be necessary by 2050. Integrated projects include carbon dioxide capture; compression into a supercritical stream; transport, most often by pipeline; deep injection at wellheads; and sequestration in suitable saline aquifer geological formations, usually 800 metres or more below the earth’s surface. In implementing CCS as part of an overall climate change mitigation strategy, it is important to note that population health and environmental risks are associated with each of these value chain components of integrated projects. Based on an assessment of existing regulatory and non-regulatory guidance for risk assessment/risk management (RA/RM), an analysis of the application, assessment, and approval process for four large scale Canadian projects, and findings from a structured expert elicitation focused on hazard and risk issues in injection and storage and risk management of low probability high impact events, this research developed an Integrated Risk Management Framework (IRMF) for CCS in the Canadian context. The IRMF is a step-wise systematic process for RA/RM during the life of a project, including engagement with wide ranging government and non-government partners that would contribute to a determination of acceptable risk and risk control options. The execution of the IRMF is an intervention that could reduce local hazards and associated risks in terms of likelihood and consequence, as well as identify and document risk management that could underpin broad acceptance of CCS as a climate change mitigation technology. This would thereby also have an important part in protecting global population health and wellbeing in the long term. Indeed, diverse stakeholders could be unforgiving if hazard assessment and risk management in CCS is considered insufficient, leading to ‘pushback’ that could affect future implementation scenarios. On the other hand, RA/RM done right could favourably impact public perception of CCS, in turn instilling confidence, public acceptance, and ongoing support for the benefit of populations worldwide. This thesis is composed of an introduction to the research problem, including a population health conceptual framework for the IRMF, followed by five manuscripts, and concluding with a discussion about other barriers to CCS project development, and a risk management policy scenario for both the present time and during the 2017-2030 implementation period.
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For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Thesis 2019Embargo end date: 31 May 2019 CanadaPublisher:Université d'Ottawa / University of Ottawa Authors: Hafizi, Kaamel;doi: 10.20381/ruor-23512
handle: 10393/39265
Objectives: Most weight loss medications target reductions in energy intake while neglecting energy expenditure, a critical predictor of weight loss/regain. This pilot study examined the effect of short-acting methylphenidate (MPH) on resting energy expenditure (REE), thermic effect of food (TEF), physical activity energy expenditure (PAEE), and how changes in energy expenditure relate to changes in body composition in youth and adults living with obesity. Methods: This study was a randomized, double-blind, placebo-controlled two-parallel arm study. In total, 19 participants were screened, of which 14 participants were randomized into the study, but complete data was only collected for 12, and only analyzed for 10 participants. Those 10 participants aged 28.8 ± 6.9 yrs. (5 Male, 5 Female) were randomized to receive either MPH (0.5 mg/kg) (n = 5) or placebo (n =5) twice daily for 60 days. Participants’ REE and TEF (indirect calorimetry), were measured at baseline (no drug/placebo), and day 60 post-treatment (drug/placebo). Participants’ PAEE (Actical) was measured between screening and baseline for a 1-week period (no drug/placebo), and on day 53 for a 1-week period (drug/placebo). Participants’ anthropometrics were measured using DEXA at baseline, and day 60 post-treatment. Results: From baseline to day 60, MPH showed a relative difference to placebo in relative REE (Relative REE: F(1, 8) = 4.235, p = 0.074, d = 0.83, 2 = 0.346) of 10%, evidenced by a 6% increase in relative REE kcal/kg (18.53 ± 1.97 Kcal/day/kg at baseline, 19.71 ± 2.52 Kcal/day/kg at final) for the MPH group, and a 4% decrease (19.08 2.36 Kcal/day/kg at baseline, 18.26 ± 2.04 Kcal/day/kg at final) in placebo, translating to moderate-effect size (Cohen’s d=0.63) favouring MPH. From baseline to day 60, there were no significant differences between groups on changes in TEF (TEF AUC: F(1, 8) = 0.079, p = 0.785, d = 0.15, 2 = 0.010) or any PAEE variables such as sedentary behavior (SB: F (1, 8) = 0.455, p = 0.52, d = 0.02, 2 = 0.054), light physical activity (LPA: F (1, 8) = 0.504, p = 0.50, d = 0.16, 2 = 0.059), moderate physical activity (MPA: F (1, 8) = 0.281, p = 0.61, d = 0.19, 2 = 0.034), moderate-to-vigorous physical activity (MVPA: F (1, 8) = 0.120, p = 0.74, d = 0.15, 2 = 0.015), or vigorous physical activity (VPA: F (1, 8) = 3.495, p = 0.098, d = 0.91, 2 = 0.304) . Mean change in body weight (kg) resulted in a weight loss of roughly -2.66 ± 2.00 kg in the MPH group and -1.64 ± 1.41 kg in the placebo group, differences that were not statistically significant. Mean change in both groups for body fat% of -0.33 ± 2.08 %, mean change in fat mass of -1.05 ± 2.59 kg, and finally a mean change in fat-free mass of -0.06 ± 1.19 kg was reported. Changes in relative REE were inversely correlated with changes in body weight (r = -0.599, p = 0.067), body fat (r = -0.524, p = 0.12) and fat mass (r = -0.599, p = 0.096). These associations were stronger in the MPH group. Conclusions: Our data suggests that MPH administration may lead to a meaningful increase in relative REE, and these suggested changes were associated with reductions in adiposity among individuals with obesity. These preliminary findings suggest that MPH should be further examined using a larger sample size and study duration to determine its effectiveness in promoting weight loss and maintenance of weight loss in individuals with obesity, a population at high risk of morbidity and premature mortality.
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For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Other literature type , Report 2015 Canada, Canada, Mexico, United States, Canada, CanadaPublisher:The University of British Columbia Benson, George; Haber, Andrea; Lao, Aaron; Krahn, Alix; Marteleira, Michelle; Trujillo, Maria;doi: 10.14288/1.0348240
handle: 2429/61941
Baliwag currently faces various impacts from climate change. Baliwag should focus on adaptation in response to climate change. [Images omitted] The Philippines is a minor cause of climate change, but faces major impacts. Baliwag must focus on adapting to these impacts. This report combines the voices of Baliwag citizens, the strengths of the community, and the authors’ outside perspective to to produce locally relevant adaptation recommendations. Summary of Recommendations Human Health & Security-- Continue livelihood programs in resettlement areas Plant local, non- invasive tree species on the sidewalks and roads for shade Host IECs on heat-related health issues. Food Security--Upgrade and maintain irrigation canals Continue to implement educational programs for farmers Establish a food systems plan and goals for creating food security. Water Sufficiency--Improve water infrastructure maintenance through institutional coordination Pursue water conservation measures through jointly-created IECs. Infrastructure--Continue to prioritize upgrading stormwater drainage infrastructure Identify and protect vulnerable infrastructure Decrease heat island effect through shade creation strategies. Industry--Train businesses, especially small and medium enterprises, and provide resources to be climate adaptive Leverage new and existing corporate social responsibility policies for adaptation. Knowledge & Capacity Building--Build staff and community knowledge on climate change Standardize and increase data collection Increase institutional collaboration with a climate Technical Working Group. These recommended climate adaptations can be taken by all actors in Baliwag, from the municipal staff, to individual businesses. Baliwag is already adapting, and will only continue to become more resilient.
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more_vert add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
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