Orientadores: Munir Salomão Skaf, Vitor Rafael Coluci / Tese (doutorado) - Universidade Estadual de Campinas, Instituto de Química / Made available in DSpace on 2018-08-26T20:42:42Z (GMT). No. of bitstreams: 1 Faro_TatianaMellodaCosta_D.pdf: 8054394 bytes, checksum: ce0d79df42ce453ffc39b51bf0ad1094 (MD5) Previous issue date: 2015 / Resumo: Atualmente, a economia mundial depende do uso de combustíveis fósseis para a geração de energia. Esse modelo apresenta problemas ambientais graves, uma vez que o petróleo é um material não-renovável e muito poluente. O gás hidrogênio apresenta-se como uma alternativa promissora para substituir os combustíveis utilizados atualmente devido a um conjunto de características positivas: ele é atóxico, tem uma alta densidade energética gravimétrica e gera apenas água como produto de sua combustão. Apesar de tais vantagens, ele ainda não é utilizado comercialmente em larga escala. O maior empecilho tecnológico para que o hidrogênio possa substituir os combustíveis fósseis está no seu armazenamento. Existem diversas propostas para armazenar o hidrogênio, como tanques contendo o hidrogênio nas formas de gás pressurizado ou de líquido, além de sistemas sólidos que permitam a sua adsorção. Todavia, nenhum sistema construído até então foi capaz de armazenar o hidrogênio de forma tão barata, segura e eficaz quanto seria necessário. Nanoestruturas de carbono são vistas como uma boa alternativa para construir dispositivos de armazenamento de hidrogênio baseados na fisissorção. Os nanopapiros de carbono, formados por folhas de grafeno enroladas no formato de um papiro, são considerados particularmente promissores para armazenar o hidrogênio, uma vez que possuem uma alta área superficial, extremidades abertas e distâncias intercamadas facilmente controláveis. Na primeira etapa deste trabalho, realizamos simulações de Dinâmica Molecular (MD) para estudar a dinâmica e a estabilidade de diversos nanopapiros em função de alguns dos seus parâmetros estruturais. Posteriormente, aplicamos o método de Monte Carlo Grand-Canônico (GCMC) para estudar o processo de adsorção de hidrogênio em nanopapiros selecionados, de forma a caracterizar quantitativamente e qualitativamente as fases adsorvidas / Abstract: Presently, the world economy depends on the use of fossil fuels to generate energy. This model presents serious environmental problems, since petroleum is a non-renewable and very pollutant material. Hydrogen gas presents itself as a promising alternative to substitute the fuels currently used due to a few positive characteristics: it is non-toxic, possesses a high gravimetric energetic density and only generates water as a combustion byproduct. In spite of all these advantages, hydrogen still isn't used commercially in a large scale. The biggest technological drawback for hydrogen to substitute fossil fuels is in its storage. There are many proposed ways to store hydrogen, such as tanks containing highly pressurized or liquid hydrogen, or solid systems that allow its adsorption. However, no system built up to the date had been able to store hydrogen as cheap, safe and efficiently as necessary. Carbon nanostructures are seen as a good alternative to build hydrogen storage devices based on physisorption. Carbon nanoscrolls, formed by graphene sheets scrolled in a papirus-like shape, are considered as particularly promising adsorption materials, since they possess a high surface area, open edges and easily controllable interlayer distances. In the first step of this work, we made Molecular Dynamics (MD) simulations to study the dynamics and the stability of several nanoscrolls as a function of their structural parameters. Subsequently, we used the Grand-Canonical Monte Carlo (GCMC) method to study the hydrogen adsorption process in selected nanoscrolls, as to characterize the adsorbed phases quantitatively and qualitatively / Doutorado / Físico-Química / Doutora em Ciências

The dokument was created with ZDT company cooperation and consists of two main parts. The first and also main part is handling construction and strength check issues of two-axis traktor trailer chassis Grand super. The second part contains design and strength check of rear protective device against small vehicle under passing. Strength check is performed in I-DEAS enviroment. The fixings are chassis frame assembly drawing, chassis frame welding assembly drawing and drawbar assembly drawing.

(English): The Cold War is a major milestone in world history and the general history of mankind. He created a world order that confirmed Western hegemony over the world for decades since the collapse of the Soviet Union. However, the Cold War did not emerge from nothing. It was created by people after World War II (Americans, Russians, British etc.). Since the defeat of Germany was inevitable, the Allies, together with their disputes on individual issues (Iran, Turkey and Greece), began to create a spawn for the next conflict, which we call the Cold War. This struggle for domination over the world lasted for decades and cost many lives in the name of dubious ideas about social engineering, where it is possible to ,,revolutionize" society from above or manage life according to abstract economic calculations. Behind the phrases of progress was the great power desires of people and politicians, emphasized by the individual ideologies of liberal democracy and Stalinist communism.

(English): The Cold War is a major milestone in world history and the general history of mankind. He created a world order that confirmed Western hegemony over the world for decades since the collapse of the Soviet Union. However, the Cold War did not emerge from nothing. It was created by people after World War II (Americans, Russians, British etc.). Since the defeat of Germany was inevitable, the Allies, together with their disputes on individual issues (Iran, Turkey and Greece), began to create a spawn for the next conflict, which we call the Cold War. This struggle for domination over the world lasted for decades and cost many lives in the name of dubious ideas about social engineering, where it is possible to ,,revolutionize" society from above or manage life according to abstract economic calculations. Behind the phrases of progress was the great power desires of people and politicians, emphasized by the individual ideologies of liberal democracy and Stalinist communism.

Teze disertační práce Pracoviště: Institut politologických studií FSV UK Praha Jméno studenta: Hrishabh Sandilya Název disertační práce: The Geopolitical Determinants of India's Central Asia Strategy Školitel: prof. PhDr. Bořivoj Hnízdo, Ph.D. Oponenti: prof. RNDr. Vladimír Baar, CSc.; Mgr. Martin Riegl, Ph.D. Termín a místo obhajoby: FSV UK, 11/2015 Osnova tezí: 1. Abstract 2. Introduction 3. Research Method & Design 4. Contributions to Literature 5. Organization of Chapters 6. Conclusions 7. Selected Bibliography 8. Interviewees 1. Abstract This dissertation aims to identify the drivers and determinants of Indian strategy and policy with regard to the five post-Soviet, Central Asian states of Kazakhstan, Kyrgyzstan, Tajikistan, Turkmenistan and Uzbekistan within a geopolitical framework. Contemporary scholarship recognizes three determinants (drivers) of Indian strategy in the region - security and strategic necessity, energy diversification given Central Asia's abundant natural resources, and, economic engagement and connectivity. Using this identification as a stepping-stone, the dissertation seeks to rest the validity of these assumptions, and explore these determinants in detail. In addition, it attempts to identify other determinants of Indian strategy, and offers a conceptual framework through which...

This bachelor’s thesis’s purpose was to determine how the complexity of economic systems invideo games affect the gameplay of said video games, Victoria II (Paradox Interactive AB,2010) and Civilization V (Take-Two Interactive Software, Inc, 2010). This was done by askingthe research question: “How does the complexity of economic systems in grand strategygames affect gameplay?“. The method was rooted in Game Research Methods (Lankoski &Björk, 2015) guidelines and the results were interpreted using Game Mechanics: AdvancedGame Design (Adams & Dormans, 2012). A formal analysis was performed for each game.The key findings of these analyses are extensive descriptions for the functioning of eachgame’s economic system as well as recommendations regarding important aspects of thesesystems and how to design them. / Denna kandidatuppsats mål var att undersöka komplexitet av ekonomiska system inomstrategiska datorspel genom att genomföra en analys för spelen Victoria II (ParadoxInteractive AB, 2010) och Civilization V (Take-Two Interactive Software, Inc, 2010) ochjämföra respektive spel. Detta med forskningsfrågan “Hur påverkar komplexiteten inomekonomiska system gameplay?”. Metoden utfördes utifrån Game Research Methods(Lankoski & Björk, 2015) riktlinjer och tolkades med hjälp av Game Mechanics: AdvancedGame Design (Adams & Dormans, 2012). Forskningen utfördes genom formell analys. Deviktigaste fynden var omfattande nedbrytningar av de ekonomiska systemen för varje spel ochrekommendationer för hur dessa system kan designas.

Depuis la parution du Programme de formation de l’école québécoise (PFEQ) du primaire et du secondaire (MEQ, 2001; 2005; MELS, 2006; 2007), l’éducation à la citoyenneté s’arrime officiellement à la discipline scolaire d’histoire (et de la géographie pour le primaire). Maintes recherches soulignent l’imprécision de la documentation officielle quant aux fondements et aux visées de cette éducation ainsi qu’aux liens qu’elle devrait entretenir avec la discipline scolaire de l’histoire (Guay et Jutras, 2004; Lefrançois et Éthier, 2008; Legendre, 2002; Martineau et Gauthier, 2002; Moisan, 2010; Morel, 2007; Paulus, 2007; Wood et Lebrun, 2004). Cet arrimage soulève également de multiples réactions dans les médias (Cardin, 2010), qui sont à la base du questionnement de la présente recherche sur les positionnements adoptés dans des journaux québécois grand public (2000-2014). Le cadre conceptuel soutenant l’analyse de contenu dans quatre de ces journaux repose sur les positionnements émanant de la documentation scientifique québécoise : 1) positionnements favorable, mitigé ou défavorable à cet arrimage en lien avec des facteurs internes à la discipline de l’histoire et 2) positionnements favorable, mitigé ou défavorable à cet arrimage en lien avec des facteurs externes à la discipline de l’histoire. Les résultats de la recherche montrent que les arguments présentés dans les journaux sont davantage défavorables à cet arrimage, notamment lorsqu’il est question du débat entourant le programme d’histoire nationale. Ces arguments sont en lien avec des facteurs internes à la discipline de l’histoire et liés à une surpondération des finalités extrascolaires.

Ce mémoire présente l'analyse du rôle du leadership politique de la Nation crie du Québec au sein de la gouvernance dans la région de la Baie James. Cette analyse s'articule autour de la question suivante : est-ce que le cadre de gouvernance actuel dans la région de la Baie James répond adéquatement au pouvoir revendiqué par le leadership cri? Cette question s'érige à partir du constat selon lequel le leadership cri se dit toujours insatisfait de son rôle dans la gouvernance de la région alors qu'il est partie à un traité et à des ententes avec les gouvernements qui sont reconnus comme uniques en matière de gouvernance autochtone au Québec. Ainsi, on cherche à connaître en quoi ce cadre de gouvernance est en mesure ou non de satisfaire le rôle revendiqué par le leadership cri. En ce sens, après avoir délimité le débat théorique se rapportant à la coexistence d'entités politiques sur le territoire de la Baie James, ce mémoire élabore une analyse des structures clés du cadre de gouvernance impliquant notamment le leadership cri, Québec et Ottawa, puis une analyse des caractéristiques du pouvoir revendiqué par le leadership cri. Subséquemment, ce mémoire présente ce qui explique que le cadre de gouvernance tel qu'analysé via ses structures clés répond ou ne répond pas adéquatement aux caractériqtiques du pouvoir revendiqué par le leadership cri. Indubitablement, la conclusion surprend et confronte une partie importante du discours et de la littérature qui réfère de façon presqu'automatique au cadre pour traiter du problème quant au rôle de la Nation crie au sein de la gouvernance dans la région de la Baie James. En fait, si on conclut que le cadre de gouvernance actuel dans la région de la Baie James ne répond effectivement pas en tous points au pouvoir revendiqué par le leadership cri, ce sont dans les nuances expliquant cette "non réponse" que se trouve le sens novateur de la mise en cause du cadre dans le problème de gouvernance.

In recent years, metal-organic frameworks (MOFs) have been identified as promising adsorbents in a number of industrially relevant, yet challenging, separations, including the removal of propane from propane/propylene mixtures and the separation of mixtures of xylene isomers. The highly tuneable nature of MOFs - wherein structures may be constructed from a variety of diverse building blocks – has resulted in the publication of a staggering number of frameworks incorporating a wide range of network topologies, pore shapes and pore diameters. As a result, there are a huge number of candidate adsorbents to consider for a given separation. Molecular simulation techniques allow the identification of those structural features and characteristics of a MOF which exert the greatest influence on the adsorption and separation of the compounds of interest, providing insights which can both guide the selection and accelerate the development of adsorbents for a specific application. The separation of propane/propylene mixtures via adsorption has typically focused on selective adsorption of the olefin, propylene, via specific olefin-adsorbent interactions. These propylene-selective MOFs result in processes which selectively remove the most abundant species in the process stream and are typically characterised by high heats of adsorption, resulting in large adsorption units and adsorbents which are difficult to regenerate. In this work, the capability of MOFs to selectively adsorb propane over propylene is explored, potentially allowing for the design of smaller and more energy-efficient adsorption units. By studying a range of different MOFs as well as carbon-based model pores, it was found that the low-pressure selectivity of the structure is determined by the strength of the electrostatic interaction between propylene and the framework, while the adsorptive preference at industrially-relevant pressures is dominated by the enhanced packing efficiency of propylene over propane. The confinement of C3 molecules, however, may be employed to negate this entropic advantage and guide the development of materials which selectively adsorb propane over propylene. It has recently been reported that the adsorptive preference of a MOF for one xylene isomer over another may be predicted based solely on the pore size distribution of the structure. In this work, the impact of pore size on selectivity was studied systematically in both one-dimensional model pore systems of varying geometries and analogous published MOF structures. The ability of the framework to discriminate between xylene molecules in these systems was found to be determined primarily by the different packing arrangements available to the different isomers – while small pores were found to favour the slimmest of the isomers, larger pores were found to favour the more compact ortho- isomer. Finally, the adsorption and diffusion of xylene isomers in a more complex MOF, UiO-66(Zr), was studied in depth. Simulations were able to correctly predict the previously-reported preference of the MOF for ortho-xylene (oX). The smaller volume of the oX molecule compared to the other isomers was found to be responsible both for an enhanced entropic contribution and higher guest-host interaction energies. The importance of framework flexibility in the diffusion of xylene isomers in UiO-66(Zr) was also explored, with distortion of the structure in response to interaction with adsorbed molecules found to be essential in allowing xylenes to diffuse through the pore space.

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