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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
11

Microalgae : A Green Purification of Reject Water for Biogas Production

Waern, Sandra January 2016 (has links)
Microalgae are a diverse group of unicellular microorganisms found in various environments, ranging from small garden ponds to lakes with extreme salinity. Common for all microalgae is their ability to convert solar energy and carbon dioxide into chemical energy via photosynthesis. Additionally, they are capable of assimilating large amounts of nitrogen and phosphorus to produce proteins and lipids. These abilities have made microalgae an interesting candidate for next generation wastewater treatment coupled with production of biogas, a renewable energy source in advancement. At the Nykvarn wastewater treatment plant in Linköping, Sweden, 15,400,000 m3 of wastewater are treated annually to remove nitrogen and phosphorus that otherwise would risk to cause eutrophication in surrounding lakes and rivers. Moreover, the treatment plant manages large amounts of sewage sludge that is anaerobically digested to produce biogas and simultaneously reduce the sludge volumes. At the Nykvarn wastewater treatment plant, dewatering of the digested sludge results in a sludge fraction of about 30 % dry content and reject water, which is very nutrient-rich and therefore requires treatment in a SHARON process before it is reintroduced to the main stream of the wastewater treatment plant. In this thesis, the potential of microalgae for nutrient assimilation was studied by monitoring the nutrient removal efficiency of a mixed culture of microalgae when fed with 1) 100 % incoming wastewater, 2) 80 % incoming wastewater + 20 % reject water and 3) 60 % incoming wastewater + 40 % reject water. Furthermore, the effect of a process additive on the nutrient removal efficiency was evaluated. The results showed that microalgae are capable of removing 100 % of ingoing ammonium nitrogen and phosphate phosphorus when fed with incoming wastewater. At transition to 20 % and 40 % reject water, the culture was light-limited with a resulting ammonium reduction of 60 % and a phosphate reduction of around 30 %. The process additive slightly improved the ammonium reduction, however, mainly by formation of nitrite and nitrate by nitrifying bacteria. Moreover, a bio-methane potential test compared the methane potential of the microalgal biomass and the biomass from the SHARON process. The test resulted in an accumulated methane production around 70 mL g-1 VS-1 for the microalgal biomass and 35 mL g-1 VS-1 for the biomass from the SHARON process. That is, the mixed microalgal culture used in this experiment has a methane potential twice that of the biomass from the SHARON process. Finally, an economic analysis of a microalgae based process for purification of reject water showed that the operating costs exceed those of the SHARON process due to high energy consumption. It is thus necessary to choose a cultivation system that effectively utilize the solar energy, as well as maximize the biogas yield from anaerobic digestion of microalgal biomass.
12

Human Rights Learning : The Significance of Narratives, Relationality and Uniqueness

Adami, Rebecca January 2014 (has links)
Whereas educational policy is mainly concerned with the content of Human Rights Education (HRE), philosophers of education have widely explored the subject and her social condition in terms of social justice education. This thesis draws on philosophers of education in exploring the subject rather than the content of HRE, focusing the study on ontological rather than epistemological aspects of learning. In this thesis learning is explored through narratives, as a relational process of becoming. The turn to narrative is taken against the dominant historical narrative of human rights as a Western project. This turn concerns how claims toward universalism of human rights exclude difference and equally concerns how notions of particularity overshadows the uniqueness in life stories. The concept of uniqueness serves to elucidate the complexity of the subject, not easily reduced into social categorizations, a concept drawn from Adriana Cavarero and Hannah Arendt. / <p>At the time of the doctoral defense, the following papers were unpublished and had a status as follows: Paper 2: In Press; Paper 4: Manuscript.</p>
13

Wild Embrace

Hatch, Timothy 01 June 2016 (has links)
WILD EMBRACE is a collection of poetry that explores the themes of abuse, survival, and fragility. The speaker of these poems, older and distanced from the abuse, asks what it means to be a survivor, and explores our obligation of compassion that, as human beings, we owe one another. While much of the work in this collection is rooted in personal experience, it is not intended to be read as memoir or autobiography. Many of these poems may have begun as lived experience, but between memory, the transcription of memory, and their final form on the printed page, they have been run through a variety of embellishment, artistic license, and shifting narrative forms. The poems in this collection attempt to capture a heightened emotional truth that can’t be attained by mere reporting of fact. WILD EMBRACE sifts through the ashes of suffering and loss, and constructs a mythology as personal as it is collective.
14

Étude de la stratégie israélienne d'appropriation territoriale de Jérusalem : le cas du mur entourant Jérusalem-Est

Durocher, Marie-Hélène 08 1900 (has links) (PDF)
Cette étude propose une analyse de la construction du mur israélien, compris ici comme l'étape finale du processus d'israélisation de Jérusalem débuté en 1948, à l'issue de la première guerre israélo-arabe. Comme la politique des autorités israéliennes a toujours été appliquée différemment à Jérusalem que dans le reste des territoires palestiniens, nous mettons en évidence que les acteurs israéliens - et en particulier les divers gouvernements d'Israël - ont développé et mis en œuvre une stratégie qui vise l'appropriation sociospatiale de Jérusalem-Est afin de l'incorporer à l'État d'Israël. Notre travail de recherche vise plus précisément à mettre en lumière le rôle du mur dans la stratégie israélienne d'appropriation de Jérusalem-Est ainsi que les impacts socio-économiques sur la population palestinienne de la ville et de sa périphérie. Des approches critique et géopolitique, nous abordons le territoire de la ville comme la dimension spatiale du pouvoir étatique. L'analyse des représentations et des pratiques du gouvernement central nous permet ainsi de mettre en évidence la transformation et l'appropriation du territoire de la ville. ______________________________________________________________________________ MOTS-CLÉS DE L’AUTEUR : Territoire, appropriation sociospatiale, Jérusalem, mur, conflit israélo-palestinien.
15

Le mur de Cisjordanie : étude sur le rapport colonial entre Israël et la Palestine

Pelland-Legendre, Marie-Christine 12 1900 (has links) (PDF)
Notre objet de recherche porte sur l'étude des rapports entre Israéliens et Palestiniens, à la lumière d'un paradigme colonial et ce, dans le contexte particulier de la construction du mur de séparation en Cisjordanie comme nouvelle étape du projet colonial israélien. Cette problématique éclaire plusieurs enjeux du conflit. Dans le cadre de cette recherche, l'attention est principalement portée sur les relations entre Israël et la Palestine dans le cadre de l'occupation israélienne des territoires palestiniens et sur les modalités de cette occupation. Pour ce faire, nous présentons, dans notre cadre théorique, quelques idées sur le colonialisme et différents concepts liés au colonialisme qui ont été utilisés par des auteurs pour décrire la situation en Israël-Palestine. Afin de bien cerner tous les enjeux, nous incluons deux parties plus factuelles : un contexte historique ainsi qu'une étude des politiques israéliennes à l'égard des Palestiniens. Enfin, nous procédons à une analyse des conséquences du mur à partir de données provenant surtout des rapports de l'ONG israélienne B'Tselem, de certains organes de l'ONU et de différents écrits académiques sur le sujet. Puis, dans nos conclusions, nous discutons de la situation en Palestine-Israël à la lumière de nos observations sur le rapport colonial. ______________________________________________________________________________ MOTS-CLÉS DE L’AUTEUR : rapport colonial, colonisation, colonialisme, Israël, Palestine (Cisjordanie), mur, séparation, occupation, apartheid, sociocide, politicide.
16

The Kaskaskia-Absaroka Boundary in the Subsurface of Athens County, Ohio

Stobart, Ryan Patrick January 2019 (has links)
No description available.
17

INTERPRETATION OF DOMESTIC WATER WELL PRODUCTION DATA AS A TOOL FOR DETECTION OF TRANSMISSIVE BEDROCK FRACTURED ZONES UNDER COVER OF THE GLACIAL FORMATIONS IN GEAUGA COUNTY, OHIO

Maharjan, Madan 18 July 2011 (has links)
No description available.
18

Unfolding

Schultz, Kate E. 05 August 2008 (has links)
No description available.
19

Somewhere between here and there : Sharon Hayes and Catherine Opie, picturing protest

Rubin, Caitlin Julia 09 October 2013 (has links)
Both Sharon Hayes’s "In the Near Future" (2005-2009) and Catherine Opie’s photographs of assemblies and rallies (2007—) take protest as a topic of investigation. Hayes enacts solo protests in urban centers and documents her project’s iterations; Opie attends organized marches and demonstrations and photographs the gathered crowds. Yet while both projects perform or picture protest in the present-day, neither is wholly of this moment. In her staged actions, Hayes holds the signs and slogans of earlier social movements, and both she and Opie create and consider the images they capture in relation to experiences and visual records which predate them. This thesis considers the ways in which expectations and desires for present and future moments are rooted in understandings of social or political pasts, investigating the work of Hayes and Opie alongside the events of Occupy Wall Street and the histories of the movements these artists reference: ACT UP (AIDS Coalition to Unleash Power), Queer Nation, and the Memphis Sanitation Strike of 1968. Focusing on the role of the documentary image in the creation and remembrance of historical events, the paper looks at how the longing to reinhabit a pictured past becomes incorporated within a desire to feel historical, and how fantasies of the past and future are absorbed into the charged space of present. Concentrating first on this temporal rearrangement (referred to by Hayes as an “unspooling of history”) and turning next to the reengagement and embodiment of symbolic imagery, this thesis explores how works by Hayes and Opie emphasize disappointment in the present scene while simultaneously endeavoring to establish alternative spaces of social and political possibility—both new sites and reimagined worlds of belonging. / text
20

Constructivisme moral : la question de l’objectivité des faits moraux

Soucy, Guillaume 01 1900 (has links)
No description available.

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