Spelling suggestions: "subject:"eocological erisis"" "subject:"eocological brisis""
21 |
Ekologická etika / Ecological ethicsValentová, Kristýna January 2019 (has links)
The issue of ecological ethics has often been discussed because it is important for the development of further generations. Nature and culture are not at the same level, yet culture is subordinate to nature. Because of human influence, the harmony of nature is endangered and we live in an ecological crisis. This master's thesis compares the opinions of experts in Czech environment who perceive the ecological ethics, collisions of nature and culture and environmental sphere from the point of philosophy. In the first part, there is a theoretical basis of ecological ethics and the elementary classification. Further, the development of ecological ethics in the Czech phylosophical thinking is presented. In the main part, the author always explores two selected ideas of Czech professionals - Erazim Kohák, Josef Šmajs, Hana Librová, Petr Jemelka and Jan Patočka. The conclusion of the thesis is that although all the authors come from various conceptions, their results are more or less corresponding. It is fundamental to accept a personal responsibility and not to long for power and profit. It is imporant to indicate and become aware of ecological crisis and start to solve it on our own at first (e. g. by voluntary modesty and awareness that we leave a legacy for further generations). We do not need to live...
|
22 |
[en] COSMOPOLITICS OF THE EARTH: MODES OF EXISTENCE AND RESISTANCE IN THE ANTHROPOCENE / [pt] COSMOPOLÍTICAS DA TERRA: MODOS DE EXISTÊNCIA E RESISTÊNCIA NO ANTROPOCENOALYNE DE CASTRO COSTA 18 February 2020 (has links)
[pt] Esta tese tem por objetivo investigar, sob um ponto de vista filosófico, possíveis caminhos para pensar o que significa resistir diante da chamada crise ecológica, isto é, o conjunto das graves alterações de origem antropogênica observadas nos processos biogeoquímicos da Terra, a ponto de ter suscitado a entrada do planeta numa nova época geológica, o Antropoceno. Esse acontecimento coloca em xeque a própria validade universal das categorias que sustentam a epistemologia dita ocidental – a qual, segundo Bruno Latour (1994), se caracteriza pela admissão de apenas dois modos de existência para os seres, isto
é, como entes naturais ou culturais. De maneira que, para investigar as possibilidades de resistência, sugerimos ser necessário considerar os modos próprios de outras ontologias conceberem os entes que habitam o mundo, bem como suas maneiras particulares de descrever os processos e interferências que
ameaçam destruí-lo. Tal consideração da pluralidade ontológica existente se faz necessária também porque, como este trabalho pretende esclarecer, a Terra pode ser compreendida como o solo comum que só existe a partir das versões divergentes dela mesma. A unidade que constitui esse solo comum, no entanto,
não pode ser vislumbrada sem um cuidadoso trabalho de composição: foi uma tentativa malsucedida de fabricar um mundo comum que deflagrou a atual guerra de mundos (Latour, 2002) que a crise ecológica torna incontornável. Assim, seguindo ainda a terminologia de Latour, de um lado da disputa estão os
Humanos, aqueles que, presumindo deter o conhecimento definitivo sobre a realidade objetiva do mundo e se arrogando o direito de explorar impiedosamente os seres naturais (além de outros humanos), conduziram-nos ao estado atual de desordem ecológica; do outro, há os Terranos, indivíduos e povos que
reconhecem na Terra e em seus seres verdadeiros aliados na existência, e não meros recursos a explorar. Esta tese, portanto, traça um panorama, ainda que não exaustivo e em larga medida especulativo, dos múltiplos modos terranos de existir e resistir, permitindo assim entrever as possíveis insurreições cosmopolíticas da Terra e de seus povos contra a barbárie eco-política que se anuncia. / [en] This thesis aims to investigate, from a philosophical standpoint, possible ways of thinking about what it means to resist in the so-called ecological crisis - that is, the severe anthropogenic changes to Earth s biogeochemical cycles that pushed the planet into a new geological epoch: the Anthropocene. This crisis calls into question the very validity of the main categories that structure what we call western epistemology – which, according to Bruno Latour (1994), is characterized by the distribution of all beings into two (and only two) modes of existence, i.e., either as natural or as cultural entities. Therefore, in order to investigate different manners of resisting, we suggest that it is crucial to consider the particular ways in which other ontologies conceive the beings that inhabit the world, as well as how they describe the processes and interferences that threaten to destroy it. Another reason why we need to adopt this ontological pluralism is
that, as this thesis aims to demonstrate, the Earth can be understood as a common ground which exists only through the diverging versions of itself. The unity that constitutes this common ground, however, requires a careful labour of composition: it was precisely an attempt at fabricating a common world whithout this composition that unleashed the current war of worlds (Latour, 2002) that the ecological crisis makes inescapable. Thus (still keeping to Latour s terminology), on one side of this war, stand the Humans - those who, by presuming to possess the definitive knowledge over objective reality, have all along claimed their right to unscrupulously exploit the natural beings (as well as other human beings),
thus leading us to the present situation of ecological disorder. On the other side stand the Earthbound, those peoples who consider the Earth and its beings as their true allies in existence, rather than just an infinite source of materials to exploit. This thesis outlines a panorama - a non-exhaustive and, to a large extent, speculative one - of the multiple Earthbound modes of existence and resistance, which provides a glimpse of the possible (cosmo)political uprisings of the Earth and its peoples against the eco-political barbarism ahead.
|
23 |
Dignidade planetária no capitalismo humanista / Planet dignity at humanistic capitalismOliveira, Vanessa Hasson de 12 December 2014 (has links)
Made available in DSpace on 2016-04-26T20:23:25Z (GMT). No. of bitstreams: 1
Vanessa Hasson de Oliveira.pdf: 1261667 bytes, checksum: b4085812b7e1bd49a8ca78b242e9a713 (MD5)
Previous issue date: 2014-12-12 / Coordenação de Aperfeiçoamento de Pessoal de Nível Superior / The present thesis has as an objective to deepen the theme of planet dignity, axis of the theorical mark of the Humanistic Capitalism, taking the subject of recognition of planetary dignity as a vector of Brazilian Constitution. In order to do so, this work adopts interdisciplinarity, running through the various disciplines that, somehow, establish the needed conversations to show the interdependence between all that live in, and in this form, are part of the planet in its universality. The proposal takes as its core the theory of autopoiesis systems, gravitating quantum physics, theology and philosophy in search of an original element common to all and everyone that justify the pretension of contributing to an paradigmatic change in Law and society, abandoning the anthropocentric perspective definitely for the establishment of a polycentric biopolitic affirmative, achieving, thus, the spin necessary to surpass the ecological crisis in which the world is drowning in / A presente tese objetiva aprofundar o tema da dignidade do planeta Terra, eixo do marco teórico do Capitalismo Humanista, levando ao cabo a proposta do reconhecimento da dignidade planetária como vetor da Constituição brasileira. Para tanto, o trabalho adota a interdisciplinaridade, percorrendo as várias disciplinas que de alguma forma estabelecem as conversações necessárias a demonstrar a interdependência entre todos os que habitam e, desta forma, constituem o Planeta em sua universalidade. A proposta toma como centro a teoria de sistemas autopoiéticos, gravitacionando ao redor do Direito, a física quântica, a teologia, a filosofia da linguagem e a metafísica, na busca de um elemento originário e comum, a tudo e a todos, que justifique a pretensão de contribuir para uma mudança paradigmática no Direito e na sociedade, abandonando-se a perspectiva antropocêntrica definitivamente para o estabelecimento de uma biopolítica policêntrica afirmativa, realizando, assim, o giro necessário a superar a crise ecológica em que o mundo está mergulhado
|
24 |
Investiga??es em torno do antropocentrismo e da atual crise ecol?gicaChoueri Junior, Nelson 30 August 2010 (has links)
Made available in DSpace on 2014-12-17T15:12:13Z (GMT). No. of bitstreams: 1
NelsonC_DISSERT.pdf: 3414305 bytes, checksum: a4b4a76f72715b4b6ad26c138e547946 (MD5)
Previous issue date: 2010-08-30 / Many environmental ethics thinkers bear the existing ecological crisis is resultig from the fact
that both, our thoughts and our actions would be antropocentric. It means that they (our
thoughts and our actions) would have the human needs and wishes satisfaction as their only
goals. However, a careful investigation about the relationship among humans could perhaps
unveil that we are not antropocentric yet. The aim of this work is to enlighten this: whether
we think and act in an antropocentric way as it seems to be largely accepted. It seems that we
have found a satisfatory answer to the question / Grande parte dos pensadores da ?tica ambiental credita a crise ecol?gica da atualidade ao fato
de que tanto o pensamento quanto as a??es dos seres humanos seriam antropoc?ntricos, ou
seja, teriam como objetivo ?nico a satisfa??o de necessidades e desejos dos pr?prios homens.
No entanto, uma cuidadosa investiga??o sobre a rela??o que os humanos mant?m entre si
poderia revelar que talvez n?o sejamos verdadeiramente nem sequer antropoc?ntricos. O
objetivo deste trabalho ? tentar trazer ? luz mais conhecimentos sobre isto: se de fato
pensamos e agimos de forma antropoc?ntrica, como ? amplamente aceito. E parece que
conseguimos nos aproximar de uma resposta satisfat?ria para a quest?o
|
25 |
Produção de energia elétrica e licenciamento ambiental: cidadania no Brasil em tempo de crise ecológicaBettencourt, Marcia Pires da Luz 14 March 2017 (has links)
Submitted by Priscilla Araujo (priscilla@ibict.br) on 2017-06-20T18:00:06Z
No. of bitstreams: 2
license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5)
Tese Marcia Pires 2017.pdf: 3509214 bytes, checksum: 7e43a46cb74a8d2490119d122489b2bc (MD5) / Made available in DSpace on 2017-06-20T18:00:07Z (GMT). No. of bitstreams: 2
license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5)
Tese Marcia Pires 2017.pdf: 3509214 bytes, checksum: 7e43a46cb74a8d2490119d122489b2bc (MD5)
Previous issue date: 2017-03-14 / As escolhas sobre as fontes de energia ganham relevância diante da crise ecológica que deriva de
um sistema que transforma tudo em mercadoria e traz como questionamento central as formas de
produção e consumo. A matriz elétrica brasileira, cuja fonte hidráulica possui destaque com
maior oferta de eletricidade no país, possui de um lado o discurso das vantagens de grande parte
de sua composição ser de energia limpa, e, do outro lado, comprova-se um alto custo
socioambiental, principalmente para comunidades que vivem próximas aos locais escolhidos para
construção de empreendimentos do setor elétrico. Esta pesquisa buscou identificar e analisar as
formas de participação da sociedade no processo de escolha de fontes energéticas para produção
de energia elétrica em âmbito federal no Brasil, visando discutir os nexos principais entre a crise
ecológica e a produção de energia elétrica; como funcionam os mecanismos institucionais para
participação social nas questões relacionadas à produção de energia elétrica no Brasil; e, de que
forma a sociedade civil participa dos assuntos referentes ao licenciamento ambiental no Conselho
Nacional do Meio Ambiente (CONAMA). Um conjunto de abordagens relacionadas à natureza
da crise ecológica e das formas de participação social foi adotado no referencial teórico e uma
análise do panorama do setor elétrico no Brasil foi elaborada. Para investigar as formas de
participação da sociedade nas questões relacionadas à composição da matriz elétrica brasileira foi
efetuada uma análise documental, além de um estudo de caso que contemplou três categorias de
atores: conselheiros do CONAMA, especialistas da área e dirigentes de órgãos do Estado,
envolvidos no planejamento e gestão do setor elétrico. A pesquisa permitiu identificar
inconsistências, ambiguidades e outros aspectos relevantes sobre a participação da sociedade na
produção de energia elétrica. Tais questões estão associadas a: deficiências nos mecanismos de
acesso à informação; falta de transparência e de padronização de documentos; falta de
participação social na elaboração dos compromissos internacionais; ausência de participação da
sociedade em espaços institucionalizados; ausência da representação da sociedade e de
especialistas no Conselho Nacional de Política Energética (CNPE); invisibilidade da discussão
sobre possíveis impactos e conflitos sociais; falta de representação da diversidade; deficiência na
participação das minorias; falta de iniciativas para a educação para cidadania focadas na questão
energética; ausência de debate sobre produção de energia versus consumo; os problemas
decorrentes da opção desenvolvimentista das decisões governamentais (mesmo que implícita).
Ao final, apresenta sugestões para o aperfeiçoamento deste processo, a partir das três questões
chave identificadas nesta tese: crise ecológica; produção de energia elétrica; e participação social.
O estudo conclui apontando para a necessidade de mudanças nas formas de participação da
sociedade no processo de escolha de fontes energéticas para produção de energia elétrica em
âmbito federal no Brasil. Além disso, propõe uma reflexão sobre o modelo de geração e consumo
de energia elétrica e a avaliação sistemática do consumo humano sobre os recursos naturais. / The choices of energy sources gain relevance in the face of the ecological crisis which has a
central questioning on the modes of production and consumption and that stems from a system
which changes everything into merchandise. On one hand, brazilian electricity generation has the
advantage of using clean energy in great part of its composition, at least in discourse. On the
other hand, though, there are high social and environmental costs, especially for communities
living near the regions where projects for the electricity sector are built. This research aimed to
identify and analyse different modes society takes part in the process of choosing energy sources
for electricity generation in Brazil. It discusses the links between the ecological crisis and the
production of electrical energy; how the institutional mechanisms for social participation on
issues related to the production of electric power in Brazil work; and, how civil society
participates in environmental licensing in the National Environment Council (CONAMA). A set
of related approaches to the nature of the ecological crisis and the forms of social participation
was adopted in the theoretical framework and an analysis of the electric sector panorama in
Brazil has been drawn up. In order to investigate the forms society participates in issues related to
the composition of the brazilian electricity matrix, the methodology comprised a documentary
analysis and a case study. They included three categories of actors: (i) CONAMA's councilors,
(ii) experts from the Field; and (iii) actors involved in the diagnosis study, planning and
management of the electricity sector. The research identified inconsistencies, ambiguities and
other relevant issues about the participation of society in the production of electrical energy. Such
issues are related to: deficiencies in the mechanisms for information access; lack of transparency
and patterns in internal documents; lack of social participation in the elaboration of international
commitments; absence of participation of the society in institutionalized spaces; absence of
representation of the society and specialists in the National Energy Policy Council (CNPE);
invisibility of the discussion on possible impacts and social conflicts; lack of diversity's
representation; deficiency in minority participation; lack of citizenship education initiatives
focused on energy issue; absence of debates on energy production versus consumption; problems
arising from developmental choice of Government decisions (even if implied). At the end, the
present research offer suggestions for the improvement of this process, from the perspective of
three key issues identified in this thesis: ecological crisis; electric power production; and social
participation. The study concludes by pointing to the need of changes in the modes society’
participate in the process of choosing energy sources for the electrical energy production at the
federal level in Brazil. In addition, it proposes a reflection on the model of generation and
consumption of electricity and a systematic evaluation of human consumption on natural
resources.
|
26 |
A crise socioecológica no labirinto do capital : uma análise das relações entre humanidade e natureza a partir dos conceitos de entropia e sociometabolismoVitória, Fernando Bilhalva 29 January 2016 (has links)
Submitted by Simone Maisonave (simonemaisonave@hotmail.com) on 2016-09-08T16:26:38Z
No. of bitstreams: 2
license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5)
Fernando Bilhalva Vitoria_Tese.pdf: 1479174 bytes, checksum: f3067ee1efd28b165ce75beef7957896 (MD5) / Approved for entry into archive by Simone Maisonave (simonemaisonave@hotmail.com) on 2016-09-08T16:26:48Z (GMT) No. of bitstreams: 2
license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5)
Fernando Bilhalva Vitoria_Tese.pdf: 1479174 bytes, checksum: f3067ee1efd28b165ce75beef7957896 (MD5) / Approved for entry into archive by Aline Batista (alinehb.ufpel@gmail.com) on 2016-09-08T21:49:29Z (GMT) No. of bitstreams: 2
license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5)
Fernando Bilhalva Vitoria_Tese.pdf: 1479174 bytes, checksum: f3067ee1efd28b165ce75beef7957896 (MD5) / Made available in DSpace on 2016-09-08T21:49:44Z (GMT). No. of bitstreams: 2
license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5)
Fernando Bilhalva Vitoria_Tese.pdf: 1479174 bytes, checksum: f3067ee1efd28b165ce75beef7957896 (MD5)
Previous issue date: 2016-01-29 / Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - CAPES / A presente tese sobre “A crise socioecológica no labirinto do capital: uma análise das relações entre humanidade e natureza a partir dos conceitos de entropia e sociometabolismo” tem como ponto de partida o cenário de crise do capitalismo atual, que, em termos históricos, espalhou-se por todas as partes do globo sob o domínio da mercadoria. Ela é perceptível tanto em temos sociais, no desemprego estrutural e na precarização do trabalho, como em termos ecológicos, indo desde a desestruturação dos solos pela agricultura industrial e homogênea até o aquecimento global, com previsões catastróficas para o presente e para o futuro. Esta relação-limite revela, de algum modo, o que Marx chamou de rachadura ou falha metabólica sob as relações produtivas e sociais, a partir do mando do modo de produção capitalista, ou o que Georgescu-Roegen chamou de processo entrópico da irreversibilidade. Com ênfase na síntese destas duas perspectivas teóricas, a tese se situa na problemática da existência de uma crise socioecológica profunda, onde o fundamento teórico-prático desta; repousa no sociometabolismo, no sentido marxista, e na noção de entropia, a partir da bioeconomia, como uma poderosa ferramenta de interpretação e compreensão qualitativa das relações sociais e ambientais no presente tempo com “Um todo manifesto”. A tese visa, assim, contribuir para o campo das ciências humanas na pretensão de propor uma visão ampla e criteriosa das relações entre a humanidade e a natureza e do papel da educação frente a este processo, para além das tramas do capital e da ideologia do desenvolvimento verde. A estrutura da tese consiste num aprofundamento do pensamento de Marx sobre a natureza e o metabolismo, e da questão da entropia em Georgescu-Roegen, bem como da evidência teórico-prática destas duas visões de mundo. Para tanto, ela propõe um todo estruturado para a análise da crise socioecológica: No primeiro capítulo, no marco teórico, recorrendo ao pensamento de Georgescu-Roegen e Marx; no segundo, a dupla visão da crise e os limites do desenvolvimento verde; no terceiro, a historicidade da crise a partir da evolução do metabolismo, até o papel dos sujeitos e da educação como uma das dimensões necessárias para outro sistema metabólico/entrópico e conciliatório entre a
humanidade e a natureza no quarto capítulo, onde o metabolismo e a entropia se articulam como um salto de qualidade. / This thesis about "The socio-ecological crisis in the capital labyrinth: an analysis of the relationship between humanity and nature from the concepts of entropy and socio-metabolism" has as its starting point the crisis scenario of the current capitalism, which, in a historical sense, has spread itself all over the world under the domain of the goods. It can be noticed in two ways. The first one is in social terms in cases as structural unemployment and work precariousness, the other one is in ecological terms ranging from soil disruption by industrial and homogeneous agriculture to global warming, with catastrophic forecasts for the present and for the future. This limit relationship reveals, somehow, what Marx called metabolic failure or crack under the productive and social relationships, from the behest of the capitalist production way, or what Georgescu-Roegen called entropic process of irreversibility. Emphasizing the synthesis of these two theoretical perspectives, the thesis lies on the questioning about the existence of a deep socio-ecological crisis, where its theoretical and practical ground lies on socio-metabolism. It is in the Marxist sense, and in the notion of entropy, from the bio-economy, as a powerful tool to have a qualitative interpretation and comprehension of the social and environmental relations in this time with "A whole manifesto". Thus, the thesis aims to contribute to the field of human sciences and intends to propose a careful and wide vision of the relationships between humanity and nature as well as the role of education facing this process, beyond the capital plots and the ideology of green development. The structure of the thesis is a deepening of Marx's thought about nature and metabolism, and the entropy issue in Georgescu-Roegen, as well as the theoretical and practical evidence of these two worldviews. To do so, it proposes a whole structured to analyze the socio-ecological crisis. In the first chapter, in the theoretical framework, using the thought of Georgescu-Roegen and Marx. In the second one, the double vision of the crisis and the limits of green development. In the third chapter, the historicity of the crisis from the metabolism evolution to the role of subject and education as one of the necessary dimensions for other metabolic/entropic and conciliatory system between humanity and nature. Finally in the fourth chapter, where metabolism and entropy are articulated as a leap in quality.
|
27 |
Propuesta diseño de concreto con sustitución parcial de los agregados por PET y caucho reciclados para mejorar sus propiedades mecánicas, en veredas de Lima Perú / Concrete design proposal with partial replacement of aggregates by recycled PET and rubber to improve its mechanical properties, in sidewalks in Lima, PeruBalboa Cardenas, Michael Alexis, Mateo Trujillo de Martin, Diosani 21 May 2021 (has links)
El Poli-Tereftalato de Etileno y caucho en desuso, se encuentran toneles en los vertederos, en los ríos y océanos, su tasa de degradación es lenta, en la actualidad se han convertido parte de la crisis ecológica. Es vital un cambio de paradigma para tener un desarrollo sostenible. Se plantea reutilizar estos recursos para contribuir a construir sustentable, sostenible y ecológico. Este estudio tiene como objetivo, demostrar que la propuesta diseño de concreto con sustitución parcial de los agregados por PET y caucho reciclados mejorará sus propiedades mecánicas, en veredas, incrementando su vida útil, su resistencia a la meteorización, la acción química y el desgaste. Se empleó metodología con nivel de investigación exploratoria y diseño de investigación experimental.
Se analizó los resultados de los 84 ensayos, todas las muestras superaron al concreto convencional, siendo la muestra tres con mejores valores, supero resistencia a compresión en 8.38%, resistencia a la flexión en 19.17%, resistencia a la tracción en 24.16% y disminución de densidad 13.17%. Se concluye que, se logra el objetivo de esta investigación, tales como la disminución de la densidad del concreto, aumenta la resistencia a la compresión, tracción y flexión, ello represente ventajas medio ambientales y sociales. Sin embargo, la desventaja es que representa mayores costos en 47.01% respecto a la muestra patrón. / Disused Polyethylene Terephthalate and rubber, barrels are found in landfills, in rivers and oceans, their degradation rate is slow, now they have become part of the ecological crisis. A paradigm shift is vital for sustainable development. It is proposed to reuse these resources to contribute to building sustainable, sustainable and ecological. The objective of this study is to demonstrate that the proposed concrete design with partial replacement of aggregates by recycled PET and rubber will improve its mechanical properties in sidewalks, increasing its useful life, resistance to weathering, chemical action and wear. An exploratory research level methodology and experimental research design were used.
The results of the 84 tests were analyzed, all the samples surpassed the conventional concrete, being the sample three with the best values, I surpass compression resistance in 8.38%, flexural resistance in 19.17%, tensile strength in 24.16% and decrease density 13.17%. It is concluded that, the objective of this research is achieved, such as the decrease in the density of the concrete, the resistance to compression, traction and flexión increases, this represents environmental and social advantages. However, the disadvantage is that it represents higher costs in 47.01% compared to the standard sample. / Tesis
|
28 |
Análisis del concreto con sustitución parcial del agregado fino por agregado de polietileno de alta densidad (HDPE) para concreto no estructural en Lima / Analysis of concrete with partial substitution of fine aggregate by high-density polyethylene (HDPE) aggregate for non-structural concrete in LimaMendoza Castillo, José Luis, Vilchez Carbajal, Manuela Stephania 23 February 2021 (has links)
En los últimos años el mundo atraviesa una gran crisis ecológica, a fin de contribuir con la reducción de los niveles de desechos, en la tecnología del concreto existe la propuesta de usar los residuos plásticos como agregados en la fabricación de concreto.
Por tal motivo, el objetivo de este trabajo es demostrar que la incorporación de agregado de HDPE como sustitución parcial del agregado fino mejorará las propiedades que incrementan la durabilidad del concreto.
Esta investigación comprende una metodología experimental que va desde la preparación del HDPE como agregado fino, análisis del agregado plástico, el diseño de mezclas del concreto patrón y concreto de estudio con 10%, 20% y 30% de reemplazo parcial del agregado fino, ensayos físicos y mecánico a un muestreo de 64 probetas, hasta el análisis de los resultados.
De la obtención de resultados, se observó que la muestra que tiene un 30% de reemplazo reduce al 86% el peso unitario comparado a la muestra patrón, es decir que tiene una variación inversamente proporcional a la cantidad porcentual de reemplazo. Con respecto a las propiedades mecánicas; la resistencia a la compresión se incrementa hasta en 17.7% con la muestra del 20% de reemplazo del agregado fino por HDPE, la resistencia a la tracción y flexión se incrementan hasta 60.76% y 13.7% respectivamente con relación a la muestra con un 30% de reemplazo parcial del agregado fino por HDPE. En la resistencia a la carbonatación no se observó ningún cambio ni variación en el concreto patrón y las distintas combinaciones. / In recent years, the world is going through a great ecological crisis, in order to contribute to the reduction of waste levels, in concrete technology there is a proposal to use plastic waste as aggregates in the manufacture of concrete.
For this reason, the objective of this work is to demonstrate that the incorporation of HDPE aggregate as a partial replacement for fine aggregate will improve the properties that increase the durability of concrete.
This research includes an experimental methodology that ranges from the preparation of HDPE as fine aggregate, analysis of the plastic aggregate, the design of mixtures of the concrete pattern and study concrete with 10%, 20% and 30% partial replacement of the fine aggregate, tests physical and mechanical to a sampling of 64 specimens, until the analysis of the results.
From the obtaining of results, it is realized that the sample that has a 30% replacement reduces the unit weight to 86% compared to the standard sample, that is, that it has a variation inversely proportional to the percentage replacement amount. Regarding the mechanical properties, the compressive strength increases up to 17.7% with the sample of 20% replacement of fine aggregate by HDPE, the tensile and flexural strength increase up to 60.76% and 13.7% respectively in relation to the sample with 30% partial replacement of fine aggregate by HDPE. In the resistance to carbonation, no change or variation is recorded in the pattern and the different combinations. / Tesis
|
29 |
Střídmost jako etický ideál / Temperance as an ethical idealGyönyör, Jakub January 2020 (has links)
Thesis will be focused on multilayered ideal of sobriety and closer examination of its meanings in the text of the Encyclical Laudato si'. The analytical part of the thesis will examine the term sobriety (sobrietas), its occurrence in texts of the Old and New Testament and the context of its use as a cardinal virtue or moderate political action. The Encyclical Laudato si' by Pope Francis will also be presented. The second part will deal with ethical aspects of sobriety in relation to the environment, to oneself, to the other person and to God in the footsteps of Pope in the Encyclical. Keywords sobriety, virtue ethics, moderate politics, alternative lifestyle, Encyclical Laudato si', Pope Francis, socio-ecological crisis
|
30 |
Odpovědná individuální spotřeba jako první krok z ekologické krize / Responsible individual consumption as the first step out of the environmental crisisHosnedlová, Alena January 2015 (has links)
The thesis deals with the problem of global ecological crisis caused by excessive consumption of material goods, particularly in countries of "The Rich North" (western countries). In the theoretical part I set up individualized man as a consumer in the system of modern society, which indicates the conditions of its existence mainly through the market. I discuss the possible way out of the ecological crisis through ideological changes in the company initiated from the "bottom", based on the internalization of values leading to responsible and moderate consumption. I demonstrate alternative ways of life, environmentally friendly in terms of consumption, and discuss the obstacles and ways of its spread. The research was conducted through interviews with eco-advisers who are dealing with consumption, as potential "opinion leaders" in this case. I tried to look their conception of responsible consumption and their potential impact on society in favor of spreading the idea of an environmentally responsible way of life Key words Ecological crisis, consumption, consumerism, modernity, individualization, values, responsible consumption, modesty, environmentally friendly way of life
|
Page generated in 0.0843 seconds