Acoustic Images
Mostrando 1-12 de 24 artigos, teses e dissertações.
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1. Avaliação dos efeitos de exercícios vocais em vozes normais com análise perceptivo-auditiva, acústica e de imagens laríngeas obtidas por videolaringoscopia de alta velocidade / Immediate effects of vocal exercise in normal voices using perceptual, acoustic analysis and of the high-speed videolaryngoscopy images
The aim is to detect the immediate effect of vocal exercises in normal voices. Thirty healthy subjects from 19 to 45 year old with no vocal complains participated in the study. The sustained vowels /a/ and /E/ were recorded in two moments: the first, we recorded the habitual voice, before any exercises; and the second, after from 1 to 5 minutes of continuous
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 20/01/2012
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2. Inversão sísmica para impedância acústica na caracterização de reservatórios : impacto da extração da wavelet e do aumento da banda de frequências / Seismic inversion to acoustic impedance in reservoir caracterization : the impact of wavelet extraction and increase the frequency band
The substrates that constitute a reservoir are identified using seismic data. The process consists of determining reservoir petrophysical properties. However, sub-seismic layers structures are masked due to the limitation of conventional seismic data. The failure provided by these data produces an erroneous model of reservoir. The lack of vertical resolution
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 25/11/2011
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3. Imagens acústicas geradas pela interação da radiação ultrassônica com o meio material / Acoustic images generated by the interaction of ul-trasonic radiation with the medium.
Neste trabalho é apresentada uma nova modalidade de imagens elastográficas baseada na emissão acústica, quando um meio é submetido à radiação ultrassônica. Esta técnica está sendo denominada de Acustografia por Pulso/Emissão (APE). Características não-lineares da propagação acústica de ondas ultrassônicas, e a resposta mecânica vibracional
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 16/09/2011
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4. Características da carcaça e da carne de novilhos de origem leiteira alimentados com dietas à base de palma forrageira. / Carcass and meat characteristics of dairy steers fed based on spineless cactus.
The objective of this issue was to evaluate the quantitative and qualitative characteristics of the carcass of dairy steers receiving diets based on spineless cactus and sorghum silage; the silage is associated by cottonseed meal, and the use of ultrasound to evaluate carcass of Holstein-Zebu young cattle destined for slaughter. The study was conducted at th
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 23/02/2011
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5. Estudo de materiais magnéticos através de técnicas fototérmicas : efeito magnetocalórico e filmes finos / Study of magnetic materials using photothermal techniques : magnetocaloric effect and thin films
The magnetocaloric effect (MCE) has been widely studied because of its possible application in magnetic refrigeration. The search for suitable materials has intensified over the last decade, with a demand not only for the preparation of new materials but also for their complete characterization. The aim of this work is to apply the photothermal techniques to
Publicado em: 2010
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6. "Truce um triângulo no matulão [...] xote, maracatu e baião": a musicalidade de Luiz Gonzaga na construção da "identidade" nordestina
The discussion about the Northeast and the political division of the country regionalization take part in the pathways institutors of history dynamics as a debate that goes beyond all discourses and power circles present in academic, politic, artistic, and literary points of view. This context has provided the structural elements of what can be called the in
Publicado em: 2009
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7. Radiographic, ultrasound and endocrine evaluation of the reproductive cycle in red-foot tortoises (Geochelone carbonaria, SPIX, 1824) and yellow-foot tortoises (Geochelone denticulata, Lineu, 1766) / Avaliação radiográfica, ultrassonográfica e endócrina do ciclo reprodutivo de jabutis-piranga (Geochelone carbonaria, SPIX, 1824) e jabutis-tinga (Geochelone denticulata, Lineu, 1766)
The main objective of this study was to evaluate the reproductive cycle of red-foot (Geochelone carbonaria, SPIX, 1824) and yellow-foot tortoises (Geochelone denticulata, Lineu, 1766) using minimally invasive clinical and laboratory methods, such as radiographic and ultrasound images and hormone dosages. Seven G. carbonaria and 5 G. denticulata healthy femal
Publicado em: 2009
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8. Processos dinÃmicos e evolutivos da zona costeira de Itamaracà por sensoriamento remoto e medidas in situ
The coastal zone of Itamaracà is like a highly dynamic environment where land and oceanic processes interact altering frequently coastal characteristics. In this context, this current study examines the responsible processes of such changes from the development and application of methodologies, which includes digital image processing and the obtaining of in
Publicado em: 2009
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9. A study of vocal and body gestures in brazilian tv newscasting / O estudo dos gestos vocais e corporais no telejornalismo brasileiro
This recearch aims to analyse the relation between vocal and body gestures in the speech of TV newscasters, as well as to investigate the changes, in stylistic terms, that have taken place in this genre, by interpreting it in light of the specificities of its social-historic moment. Three historic moments will be considered: the initial moment of TV newscast
Publicado em: 2008
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10. As equações da onda imagem para remigração em meios elipticamente anisotropicos / The image wave equations for remigration in elliptically anisotropic media
The image-wave equations for the problems of depth and time remigration in elliptically anisotropic media are second-order partial differential equations similar to the acoustic wave equation. The propagation variable is the vertical velocity or the medium ellipticity. These differential equations are derived from the kinematic properties of anisotropic remi
Publicado em: 2007
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11. Imagens ultra-sônicas em modo-B com técnicas de abertura focal sintética - SAFT. / Ultrasonic imaging in B-mode with synthetic aperture focusing tecnique - SAFT.
Este trabalho trata do estudo e aplicação da técnica de abertura focal sintética (SAFT) na geração de imagens por ultra-som em modo-B com transdutores matriciais lineares, para aplicação em ensaios não destrutivos. Sinais em modo-A são adquiridos e armazenados correspondentes ao meio inspecionado. Implementaram-se duas estratégias de processamento
Publicado em: 2007
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12. VOCAL AND LARYNGEAL MODIFICATIONS PRODUCED BY THE VIBRANT LINGUAL SOUND / MODIFICAÇÕES LARÍNGEAS E VOCAIS PRODUZIDAS PELO SOM VIBRANTE LINGUAL
This research had like objective to investigate the vocal and laryngeal effect and sensations that appeared from to the execution of the voiced tongue vibration technique (VTVT) applied in three series of fifteen repetitions, in the maximum time of phonation with habitual tone and intensity, with pauses of thirty seconds of passive rest between each serie. F
Publicado em: 2006