Isolation Of The Sound
Mostrando 1-12 de 23 artigos, teses e dissertações.
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1. Simulation of Current Pulses and Sound Waves Resulting from Partial Discharges in a Needle-Plane Geometry in Air
Abstract Partial discharges can occur in different types of electric equipment and cause progressive insulation deterioration, so there is interest in monitoring partial discharges for assessing the state of the isolation of an electric system and to predict failures. Techniques to detect partial discharges, such as detecting ultrasonic emission, have been p
Journal of Microwaves, Optoelectronics and Electromagnetic Applications. Publicado em: 2022
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2. Impact of the speech sound disorders: family and child perception
RESUMO Objetivo: verificar a percepção da família e da criança quanto ao impacto dos distúrbios dos sons da fala, do tipo fonológico. Métodos: pesquisa de caráter exploratório, quali-quantitativo, prospectivo de um Serviço de Atendimento Fonoaudiológico de uma Instituição de Ensino Superior. Participaram do estudo 64sujeitos, sendo 32 criança
Rev. CEFAC. Publicado em: 01/07/2019
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3. Goat umbilical cord cells are permissive to small ruminant lentivirus infection in vitro
Abstract Small ruminant lentiviruses isolated from peripheral blood leukocytes and target organs can be propagated in vitro in fibroblasts derived from goat synovial membrane cells. These cells are obtained from tissues collected from embryos or fetuses and are necessary for the establishment of the fibroblast primary culture. A new alternative type of host
Braz. J. Microbiol.. Publicado em: 2017-03
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4. Influence of the type of fastening of multi-layered closing panels on the estimate of the sound transmission loss
Abstract Industrialized closing systems appear as rational solutions in steel-structured construction. These closing systems, consisting of multi-layered panels, have been applied in projects where it is intended to obtain a high sound transmission loss without raising the cost and without using a lot of mass. However, acoustic isolation depends on several f
REM, Int. Eng. J.. Publicado em: 2016-12
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5. Larvicidal efficacies of plants from Midwestern Brazil: melianodiol from Guarea kunthiana as a potential biopesticide against Aedes aegypti
A total of 36 ethanol extracts from different anatomical parts of 27 plant species (18 families), native to the Pantanal and Cerrado biomes in Midwest Brazil, was assessed for their effect against Aedes aegypti larvae, the vector of dengue, hemorrhagic dengue, Zika and chikungunya fevers. Only the extract obtained from seeds of Guarea kunthiana (Meliaceae) p
Mem. Inst. Oswaldo Cruz. Publicado em: 13/06/2016
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6. Capacidade de deterioração de cepas de Eucalyptus spp. por fungos xilófagos / Capacity of deterioration of stumps of Eucalyptus spp. by xylophagous fungi
On the reform of the forest stand, after the cutting of trees, the remaining strains of Eucalyptus spp. must be removed. The natural degradation of stumps of eucalypts after clear cutting is slow. The mechanical destock raises the cost of production, involves machinery traffic on the ground favoring soil compaction and hindering the growth and distribution o
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 15/12/2011
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7. Controle acústico híbrido da perda de transmissão sonora / Hybrid acustic control of sound transmission loss
The control of transmission loss through panels is a problem that has attracted the attention of automotive, aeronautical and aerospace industries. The passive noise control strategies used for this purposed does not have high efficiency in all audible spectrum, although it consists in a robust solution, it is not effective in low frequency absorb (below 1kH
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 08/07/2011
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8. Microbial contamination of luncheon meat sliced and packaged at supermarkets in Porto Alegre, Brazil
Background: Ready-to-eat (RTE) foods are considered a high risk food group, since they are often consumed without a cooking step. Luncheon meat, a RTE food widely consumed in Brazil, is traditionally produced as industrially vacuum-packaged loaves and afterwards is sliced and re-packaged at retail stores. Since this practice may pose an additional hazard of
Publicado em: 2011
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9. Materiais e técnicas contemporâneas para controle de ruído aéreo em edifícios de escritórios: subsídios para especificações / Contemporaneous materials and techniques to air noise control on corporate edifices: specification foundations
Big cities have been taken the ground thought freeways and avenues, where constant and loud noise takes place. At theses ways, corporate edifices are also often established, so they naturally become exposed to the external noise interference, regardless the own internal facilities noising. The consequence is that people how work at these places are more pron
Publicado em: 2009
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10. ANÁLISE DA ISOLAÇÃO ACÚSTICA EM PAREDE DE HABITAÇÃO POPULAR EXECUTADA COM RESÍDUOS DE PNEUS / ANALYSIS OF ACOUSTIC ISOLATION IN WALL OF POPULAR HABITACION EXECUTED WITH RESIDUES OF TIRES
Neste presente trabalho avalia-se o isolamento acústico de uma parede executada com placas pré-moldadas, construídas com material reciclável (borracha de pneus), empregada em edificações populares, há quase duas décadas, na cidade de Santa Cruz do Sul - RS. O sistema construtivo é executado em parte com a utilização de mão de obra carcerária, cu
Publicado em: 2009
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11. Caracterização acustica de ginasios de esportes multifuncionais da cidade de Campinas, SP / Characterization acoustics multipurpose gymnasium of sports of the Campinas s city
Similar sonorous stimulus may promote different sound perceptions in the environment. Sonorous stimulus may be objectively evaluated by acoustic measurements however, sound perceptions evaluation (subjectively) requires another specific methods. Spaces like sport gymnasiums can promote different sensations for the users depending on their activities. This ty
Publicado em: 2008
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12. Evidence of high inbreeding in a population of the endangered giant anteater, Myrmecophaga tridactyla (Myrmecophagidae), from Emas National Park, Brazil
We report the genetic structure, relatedness and mating structure of a population of the endangered giant anteater Myrmecophaga tridactyla Linnaeus, 1758 in the Emas National Park, Brazil, based on variability at five microsatellite loci. Additionally, we addressed the hypothesis that the M. tridactyla population studied has low levels of polymorphism and hi
Genetics and Molecular Biology. Publicado em: 2007