999 resultados para Perda Auditiva Provocada por Ruído
Resumo:
No presente livro, apresenta-se uma síntese do trabalho de campo desenvolvido para Portugal, no âmbito do primeiro ano de atividade do projeto ERASMUS+ intitulado ISOLearn for HEI: Innovation and Social Learning for Higher Education Institutions (http://www.ISOLearn.net/), entre Outubro de 2014 e Outubro de 2016. No âmbito deste projeto europeu, coordenado pela Universidade Aberta, procurou-se fazer um levantamento das condições existentes para a inclusão de pessoas com deficiência visual e auditiva no Ensino Superior, em 4 países europeus: Portugal; Itália; Suécia e Eslovénia. Para tal foi desenvolvido um trabalho que consistiu na realização de entrevistas a Instituições de Ensino Superior (IES), e um conjunto de questionários online, a estudantes com este tipo de deficiências. Procurou-se fazer este levantamento enquadrado na legislação existente sobre este tema, e sobretudo na sensibilidade das principais partes interessadas (stakeholders) nesta temática, aferindo a sua perceção da realidade, procurando-se desta forma identificar eventuais desajustes entre o enquadramento legal e institucional vigente, e a prática das Instituições de Ensino Superior (IES) em cada um dos quatro países envolvidos. Considerando que os parceiros portugueses incluem entidades que se dedicam exclusivamente aos problemas da população em estudo, como é o caso da ACAPO – Associação dos Cegos e Amblíopes de Portugal; da APS – Associação Portuguesa de Surdos; e da Fundação Calouste Gulbenkian, que tem vindo a desenvolver trabalho na consagração dos Direitos Humanos e da inclusão de pessoas com deficiência; que por essa razão o trabalho de campo desenvolvido pelos parceiros portugueses foi extremamente rigoroso e em certa medida mais aprofundado, quer em termos metodológicos, quer em termos de amostra obtida – com entrevistas a 23 IES, e a participação de 49 estudantes, repartidos entre estudantes com deficiência visual e estudantes com deficiência auditiva – entendeu-se que seria importante autonomizar o trabalho sobre Portugal, dando-lhe a visibilidade que a edição eletrónica do presente livro pretende comportar. A presente edição pretende, pois, constituir apenas um pequeno pilar para o desenvolvimento do conhecimento sobre esta matéria em Portugal. É objetivo da equipa do projeto que, a partir da sua leitura se despertem consciências que levem à realização de mais trabalhos sobre esta temática, que possam permitir, não apenas uma maior sensibilização da sociedade portuguesa em geral sobre estas matérias, mas também, incitar todas as partes interessadas à ação, no sentido de uma maior inclusão das pessoas com deficiência visual e auditiva, no Ensino Superior. Naturalmente, tratando-se de um trabalho desenvolvido no âmbito de um projeto europeu, os objetivos definitivos vão para além das fronteiras nacionais, esperando-se que ele possa ajudar a própria Europa a desenvolver mais e melhores políticas para abordagem à temática da inclusão das pessoas com deficiência visual e auditiva no Ensino Superior no espaço europeu. Este deve ser considerado um trabalho em aberto; apenas um primeiro passo de uma longa e, espera-se, frutuosa caminhada, cujo destino será a inclusão das pessoas com deficiência visual e auditiva, no Ensino Superior.
Resumo:
Tesis (Trabajadora Social).-- Universidad de La Salle. Facultad de Ciencias Económicas y sociales. Programa de Trabajo Social, 2014
Resumo:
The Potiguar basin has large fields of viscous oil where the used method for recovering is based on vapor injection; this operation is carried out by injecting vapor in the oilwell directly, without the protection of a revetment through thermal insulation, what causes its dilation and, consequently, cracks in the cement placed on the annular, and lost of hydraulic insulation; this crack is occasioned by the phenomenon of retrogression of the compressive resistance due to the conversion of the hydrated calcium silicate in phases calcium-rich, caused by the high temperatures in the wells, subjected to thermal recuperation. This work has evaluated the application of composite pastes with addition of residue of biomass of ground sugar-cane bagasse as anti-retrogression mineral admixture for cementation of oil-wells subjected to thermal recuperation. The addition of the mineral residue was carried out considering a relative amount of 10, 20, 30, 40 and 59% in relation to cement mass, trying to improve the microstructure of the paste, still being developed a reference paste only with cement and a paste with addition of 40% of silica flour - renowned material in the oil industry as anti-retrogression additive. Pozzolanic activity of the ash was evaluated through XRD, TG/DTG, as the resistance to compression, and it was also determined the physical and mechanical behavior of the pastes when submitted to cure at low temperatures (22 and 38º C); besides it was evaluated the behavior of the pastes when submitted to two cycles of cure at high temperature (280ºC) and pressure (7 MPa). It was verified that the ash of the sugar-cane biomass presents pozzolanic reaction and has great efficiency in decrease the permeability of the paste by filler effect, as well as that addition of ash in a relative amount of 10, 20 e 30% increases cured compressive resistance at low temperatures. It was also showed that the ash in a relative amount of 40% and 59% has very significant efficiency as anti-retrogression additive, since it prevents the decrease of compressive resistance and forms hydrated calcium silicate type xenotlita and tobermorita which have more resistance and stability in high temperatures
Resumo:
The materials engineering includes processes and products involving several areas of engineering, allowing them to prepare materials that fulfill the needs of various new products. In this case, this work aims to study a system composed of cement paste and geopolymers, which can contribute to solving an engineering problem that directly involves the exploitation of oil wells subject to loss of circulation. To correct it, has been already proposed the use of granular materials, fibers, reducing the drilling fluid or cement paste density and even surface and downhole mixed systems. In this work, we proposed the development of a slurry mixed system, the first was a cement-based slurry and the second a geopolymer-based slurry. The cement-based slurry was formulated with low density and extenders, 12.0 ppg (1.438 g/cm ³), showing great thixotropic characteristics. It was added nano silica at concentrations of 0.5, 1.0 and 1.5 gps (66.88, 133.76 and 200.64 L/m3) and CaCl2 at concentrations of 0.5, 1, 0 and 1.5%. The second system is a geopolymer-based paste formulated from molar ratios of 3.5 (nSiO2/nAl2O3), 0.27 (nK2O/nSiO2), 1.07 (nK2O/nAl2O3) and 13.99 (nH2O/nK2O). Finally, we performed a mixture of these two systems, for their application for correction of circulation lost. To characterize the raw materials, XRD, XRF, FTIR analysis and titration were performed. The both systems were characterized in tests based on API RP10B. Compressive strength tests were conducted after curing for 24 hours, 7 and 28 days at 58 °C on the cement-based system and the geopolymer-based system. From the mixtures have been performed mixability tests and micro structural characterizations (XRD, SEM and TG). The results showed that the nano silica, when combined with CaCl2 modified the rheological properties of the cement slurry and from the concentration of 1.5 gpc (200.64 L / m³) it was possible to obtain stable systems. The system mixture caused a change in the microstructure of the material by favoring the rate of geopolymer formation to hinder the C3S phase hydration, thus, the production of CSH phases and Portlandite were harmed. Through the mixability tests it can be concluded that the system, due to reduced setting time of the mixture, can be applied to plug lost circulation zones when mixed downhole
Resumo:
Dissertação de Mestrado, Neurociências Cognitivas e Neuropsicologia, Faculdade de Ciências Humanas e Sociais, Universidade do Algarve, 2014
Resumo:
Among the many types of noise observed in seismic land acquisition there is one produced by surface waves called Ground Roll that is a particular type of Rayleigh wave which characteristics are high amplitude, low frequency and low velocity (generating a cone with high dip). Ground roll contaminates the relevant signals and can mask the relevant information, carried by waves scattered in deeper regions of the geological layers. In this thesis, we will present a method that attenuates the ground roll. The technique consists in to decompose the seismogram in a basis of curvelet functions that are localized in time, in frequency, and also, incorporate an angular orientation. These characteristics allow to construct a curvelet filter that takes in consideration the localization of denoise in scales, times and angles in the seismogram. The method was tested with real data and the results were very good
Resumo:
The Noise Pollution causes degradation in the quality of the environment and presents itself as one of the most common environmental problems in the big cities. An Urban environment present scenario and their complex acoustic study need to consider the contribution of various noise sources. Accordingly to computational models through mapping and prediction of acoustic scene become important, because they enable the realization of calculations, analyzes and reports, allowing the interpretation of satisfactory results. The study neighborhood is the neighborhood of Lagoa Nova, a central area of the city of Natal, which will undergo major changes in urban space due to urban mobility projects planned for the area around the stadium and the consequent changes of urban form and traffic. Thus, this study aims to evaluate the noise impact caused by road and morphological changes around the stadium Arena das Dunas in the neighborhood of Lagoa Nova, through on-site measurements and mapping using the computational model SoundPLAN year 2012 and the scenario evolution acoustic for the year 2017. For this analysis was the construction of the first acoustic mapping based on current diagnostic acoustic neighborhood, physical mapping, classified vehicle count and measurement of sound pressure level, and to build the prediction of noise were observed for the area study the modifications provided for traffic, urban form and mobility work. In this study, it is concluded that the sound pressure levels of the year in 2012 and 2017 extrapolate current legislation. For the prediction of noise were numerous changes in the acoustic scene, in which the works of urban mobility provided will improve traffic flow, thus reduce the sound pressure level where interventions are expected
Resumo:
In geophysics there are several steps in the study of the Earth, one of them is the processing of seismic records. These records are obtained through observations made on the earth surface and are useful for information about the structure and composition of the inaccessible parts in great depths. Most of the tools and techniques developed for such studies has been applied in academic projects. The big problem is that the seismic processing power unwanted, recorded by receivers that do not bring any kind of information related to the reflectors can mask the information and/or generate erroneous information from the subsurface. This energy is known as unwanted seismic noise. To reduce the noise and improve a signal indicating a reflection, without losing desirable signals is sometimes a problem of difficult solution. The project aims to get rid of the ground roll noise, which shows a pattern characterized by low frequency, low rate of decay, low velocity and high amplituds. The Karhunen-Loève Transform is a great tool for identification of patterns based on the eigenvalues and eigenvectors. Together with the Karhunen-Loève Transform we will be using the Singular Value Decomposition, since it is a great mathematical technique for manipulating data
Resumo:
Waterflooding is a technique largely applied in the oil industry. The injected water displaces oil to the producer wells and avoid reservoir pressure decline. However, suspended particles in the injected water may cause plugging of pore throats causing formation damage (permeability reduction) and injectivity decline during waterflooding. When injectivity decline occurs it is necessary to increase the injection pressure in order to maintain water flow injection. Therefore, a reliable prediction of injectivity decline is essential in waterflooding projects. In this dissertation, a simulator based on the traditional porous medium filtration model (including deep bed filtration and external filter cake formation) was developed and applied to predict injectivity decline in perforated wells (this prediction was made from history data). Experimental modeling and injectivity decline in open-hole wells is also discussed. The injectivity of modeling showed good agreement with field data, which can be used to support plan stimulation injection wells