Diseño y construcción de un prototipo recolector de material plástico flotante en el agua

Tesis (Ingeniero(a) en Automaziación).--Universidad de La Salle. Facultad de Ingeniería. Programa de Ingeniería en Automatización, 2014

Crescimento e desenvolvimento de Plinia cauliflora de acordo com a intensidade luminosa em clima subtropical

The jabuticaba fruit tree from classified in the Myrtaceae family and Plinia genre. There are about nine species of this fruit tree, that include as most important, Plinia trunciflora (jabuticaba de cabinho), naturally occurring in southwestern Paraná State, Brazil, P. cauliflora (jabuticaba Paulista or Jabuticaba Açu) and P. jaboticaba (Vell) (jabuticaba sabará), with all the over species producing fruit for the industry or fresh consumption. Nevertheless, there aren‟t commercial orchards with this culture, with highest yield part from extractive. This fact can be combined with lack of technical knowledge for the plants produce in the field. As these species are found in the forest, the first point is whether they can adapt to other light intensity conditions. The aim of this work was to identify the adaptive behavior of jabuticaba fruit seedling and tree when they were put in different light intensities and what this can be considered ideal for the growth, as well as, its influence in the leaves secondary compounds production. Two experiments were conducted, with the first involved with the study of the seedlings and the second with plants in the field. The work was carried out at Universidade Tecnológica Federal do Paraná – Câmpus Dois Vizinhos, Paraná State - Brazil. The experimental design was a completely randomized and a block design with four treatments and four replications of 10 seedlings or two plants per plot, according to nursery or orchard conditions, respectively. The treatments were base according to the light intensity. The treatments used were, 1 - full sun, similar the orchard condition, with 0% shading; 2 - side cover with shade cloth and top with transparent plastic, representing a gap forest condition; 3 - side and top cover with shade cloth, representing stage where the forest canopy is closing, focusing only indirect sunlight; 4 - side and top cover with shade cloth, simulating a closed canopy condition, with PPD (photon flux density) of 10% (90% shading); 5 - side and top cover with shade cloth, simulating a more open canopy condition with PPD 65% (35% shading). The growth and development seedling and plant characteristics were evaluated once by month, as also, during time part in the plants the secondary metabolites leaves, soil activity microbiological and the fresh and dry matter root and shoot and, root length from seedlings. For the growth and development of jabuticaba Açú Paulista seedling recommend to use of side cover with shade cloth and top with transparent plastic, representing a gap forest condition. In orchard, for the growth and development of plants jabuticaba Híbrida tree it was recommended the use of side and top cover with shade cloth of some type. For production of secondary metabolites of leaves, the plant must to be full sunlight condition orchard.

O uso de filme como recurso pedagógico no estudo das epidemias: possibilidades na aprendizagem significativa

Acompanha: Epidemias na escola? Só em filmes: possibilidades de contaminação na aprendizagem significativa

Una lectura en clave pictórica del filme Esquilache (Josefina Molina, 1988)

Este trabajo se acerca al análisis de los referentes pictóricos que se pueden rastrear en el filme Esquilache, dirigido por Josefina Molina en 1988 y en el que aborda una reflexión sobre el poder y la soledad. Se trata de una aportación de la autora cordobesa al cine histórico español, al que contribuye a renovar, a partir de la adaptación que realiza de la obra teatral de Antonio Buero Vallejo Un soñador para un pueblo. Se pretende mostrar así las relaciones de intertextualidad existentes entre el original literario, la película y las imágenes pictóricas que la cineasta utiliza como referencias iconográficas para la construcción de su universo fílmico.

Desenvolvimento e crescimento da espécie de cogumelo Pleurotus ostreatus em garrafas de plástico reutilizado

Dissertação de Mestrado, Tecnologia e Segurança Alimentar, 22 de Junho de 2016, Universidade dos Açores.

Era uma vez... Branca de Neve e a representação feminina no conto clássico e no filme espelho, espelho meu

Esta dissertação tem por objetivo analisar as mudanças ocorridas na representação feminina, ao longo do tempo, em contos de fadas e suas adaptações, através de um viés comparativo. Para esta pesquisa, selecionamos como corpus as duas versões do conto “Branca de Neve”, dos Irmãos Grimm – uma publicada entre os anos de 1812 e 1815 e a outra publicada em 1822 –, e o filme Espelho, espelho meu (2012), dirigido por Tarsem Singh com história de Melissa Wallack e roteiro de Jason Keller e Marc Klein. Nossa análise pauta-se nas informações obtidas em História da vida privada, organizada por Georges Duby e Philiphe Ariès (1991) e Minha história das mulheres, de Michelle Perrot (2008). Como principal fundamentação teórica, utilizamos as concepções de Linda Hutcheon, em especial aquelas constantes em seu livro Uma teoria da adaptação (2013). Além disso, durante a escrita desta dissertação, também fizemos uso dos estudos de Bruno Bettelheim (2007), Tomás Enrique Creus (2006) e Carl Gustav Jung (2000). Ao longo deste estudo, procuramos ainda compreender as mudanças na representação feminina nos contos de fadas clássicos, comparando-se as adaptações referidas, relacionando-as com as alterações sociais acontecidas ao longo do tempo.

Estudo do comportamento plástico, mecânico, microestrutural e térmico do concreto produzido com resíduo de porcelanato

Population growth experienced in major cities, allied to society s need of infra-structure, especially ones related to habitational demands, increases the consumption of construction materials. As a consequence, consumption of natural resources itself. Thus, due to this process, concrete is one of the most produced materials in civil construction. This is also due to the great diversity of its application, easiness in its execution and adequate mechanical performance, as well as low production costs. Following the same tendencies in construction development, the ceramic industry has intensified the production of porcelain ceramic tiles and floors. These are achieved by a fine finishing and receive polishing at the end of the fabrication process. This work researched the use of porcelain residues in polishing for the production of concrete. All of which; due to economical and environmental issues. This process aims to prove adequate destiny for this type of residue, due to environmental issues, incorporating it to the concrete itself; all of which provides economy in consumption of the materials that constitute concrete. Thus, the main characteristics of concrete were investigated through the inclusion of different concentration of the porcelain residue as additional trait element. The residue rates incorporated to the trait varied from 10% to 50% in relation to the cement mass, in the traits with plastic additives and without plastic additives. It is observed that the inclusion of porcelain residue produced a meaningful alteration in the consistency of fresh concrete. This residue has a fine granulometry and it considerably absorbed the water used in the concrete spreading, influencing the way this material is dealt with. Thus, the value of cement striking decreases with the increase of residues present in trait. The maximal incorporation of the residue was of 50%, massively, for the same factor water/initial cement. The use of residues in concrete results in an 40% increase in the compression resistance. It is also proportional to residue concentration of porcelain in the trait. The microstructure was also favored once porosity and concrete absorption decreases with the use of this residue. The parameters demonstrate the quality and durability of the concrete produced with this residue. The use of porcelain residue in concrete composition has not produced meaningful thermal behavior changes. Thermal conductivity, heat capacity and thermal diffusivity have been maintained basically constant

Análisis y desarrollo del paisaje onírico y surrealista. Utilización de la fragmentación y la simetría como recurso plástico

224 p.

Processamento e caracterização de compósitos Poli(METACRILATO DE METILA)/Sílica (PMMA/SiO2)

Currently the search for new materials with properties suitable for specific applications has increased the number of researches that aim to address market needs. The poly (methyl methacrylate) (PMMA) is one of the most important polymers of the family of polyacrylates and polymethacrylates, especially for its unique optical properties and weathering resistance, and exceptional hardness and gloss. The development of polymer composites by the addition of inorganic fillers to the PMMA matrix increases the potential use of this polymer in various fields of application. The most commonly used inorganic fillers are particles of silica (SiO2), modified clays, graphite and carbon nanotubes. The main objective of this work is the development of PMMA/SiO2 composites at different concentrations of SiO2, for new applications as engineering plastics. The composites were produced by extrusion of tubular film, and obtained via solution for application to commercial PMMA plates, and also by injection molding, for improved the abrasion and scratch resistance of PMMA without compromising transparency. The effects of the addition of silica particles in the polymer matrix properties were evaluated by the maximum tensile strength, hardness, abrasion and scratch resistance, in addition to preliminary characterization by torque rheometry and melt flow rate. The results indicated that it is possible to use silica particles in a PMMA matrix, and a higher silica concentration produced an increase of the abrasion and scratch resistance, hardness, and reduced tensile strength

Desenvolvimento e otimização de um filme biodegradável à base de proteína do tremoço (Lupinus angustifolius)

Dissertação de Mestrado, Biologia Molecular e Microbiana, Faculdade de Ciências e Tecnologia, Universidade do Algarve, 2015

Propuesta de un plan estratégico para la mediana empresa dedicada a la fabricación de plástico, ubicada en el área metropolítana de San Salvador. Caso ilustrativo.

La industria del plástico en El Salvador surge en la década de los 50`s donde aparecen las primeras empresas produciendo artículos sencillos y de utilización masiva, el plástico se ha ido incorporando a todas las sociedades igual industrializadas como agrícolas, en los lugares remotos o en las grandes ciudades, ha servido para envasar, para jugar, y para vestir, en este contexto se puede encontrar los artículos promocionales. La importancia de la industria del plástico en El Salvador representa un rubro importante en la economía del país. Por su potencial desarrollo, por ser generadora de empleos, por ser los productos plásticos los sustitutos de una gran variedad de productos naturales que se escasean, por ello el grupo investigador consideró que sería un aporte importante para la empresa ZAMI, S.A. DE C.V., la propuesta de un plan estratégico aprovechando las oportunidades y fortalezas con las que cuenta para lograr sus metas a corto y largo plazo e identificar debilidades y amenazas, y de esa manera anticiparse a ellas. La presente investigación se diseñó con el objeto de elaborar un plan estratégico para la empresa ZAMI, S.A. de C.V., fabricante de plástico, que le permita mejorar su eficiencia y rentabilidad permitiéndole contar con una orientación para sus acciones y recursos, y así, posicionarse dentro de la industria fabricante de plástico, beneficiando con ello a empleados, accionistas, proveedores y clientes. Se elaboraron instrumentos de investigación como el cuestionario y la entrevista para conocer a fondo la situación actual de la empresa en estudio por medio de las opiniones de clientes y proveedores de la empresa en estudio, así como también con sus Gerentes, con quienes se tuvo contacto. En base a esto se estructuró la propuesta que ofreciera una solución viable a cada problemática que fue encontrada, tal como se detalla a continuación: Por el incremento en el nivel de sus pedidos, la empresa ZAMI, S.A. DE C.V., ha tenido que aumentar su producción, y no posee una herramienta administrativa que le ayude a orientar sus acciones y recursos, de manera que pueda abastecer la demanda y se vuelva más competitiva en el mercado, expandiendo sus fronteras.

Logística de recogida para residuos sólidos derivados del plástico en la planta de acopio del barrio La Alquería en la ciudad de Bogotá

107 p.

Estudo termo-mecânico de interconector metálico recoberto com filme de La0,8Ca0,2CrO3 e de interconector cerâmico de La0,8Sr0,2Cr0,92Co0,08O3 para PaCOS

Doped lanthanum chromite ( LaCrO3 ) has been the most common material used as interconnect in solid oxide fuel cells for high temperature ( SOFC-HT ) that enabling the stack of SOFCs. The reduction of the operating temperature, to around 800 º C, of solid oxide fuel cells enabled the use of metallic interconnects as an alternative to ceramic LaCrO3, From the practical point of view, to be a strong candidate for interconnect the material must have good physical and mechanical properties such as resistance to oxidizing and reducing environments, easy manufacture and appropriate thermo-mechanical properties. Thus, a study on the physic-mechanical interconnects La0,8Sr0,2Cr0,92Co0,08O3 ceramics for SOFC -AT obtained by the method of combustion , as well as thermo-mechanical properties of metallic interconnects (AISI 444) covered with La0,8Ca0,2CrO3 by deposition technique by spray-pyrolysis fuel cells for intermediate temperature (IT-SOFCs). The La0,8Sr0,2Cr0,92Co0,08O3 was characterized by X -ray diffraction(XRD) , density and porosity , Vickers hardness (HV) , the flexural strength at room temperature and 900 °C and scanning electron microscopy (SEM). The X -ray diffraction confirmed the phase formation and LaCrO3 and CoCr2O4, in order 6 GPa hardness and mechanical strength at room temperature was 62 MPa ceramic Interconnector. The coated metal interconnects La0,8Ca0,2CrO3 passed the identification by XRD after deposition of the film after the oxidation test. The oxidative behavior showed increased resistance to oxidation of the metal substrate covered by La0,8Ca0,2CrO3 In flexural strength of the coated metal substrate, it was noticed only in the increased room temperature. The a SEM analysis proved the formation of Cr2O3 and (Cr,Mn)3O4 layers on metal substrate and confirmed the stability of the ceramic La0,8 Ca0,2CrO3 film after oxidative test