Air Noise Control
Mostrando 1-12 de 12 artigos, teses e dissertações.
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1. INNOVATION SYSTEM IN AIR TRANSPORT MANAGEMENT
Abstract Identifying previous research subjects on innovation management in air transport provides not only updated references on new technologies in this industry, but also indicates which areas need to be prioritized in future research. A systematic literature review of publications in this field over the past decade, from 2005 to 2015, including 2016 publ
JISTEM J.Inf.Syst. Technol. Manag.. Publicado em: 02/12/2019
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2. Noise-induced tinnitus: auditory evoked potential in symptomatic and asymptomatic patients
OBJECTIVES:We evaluated the central auditory pathways in workers with noise-induced tinnitus with normal hearing thresholds, compared the auditory brainstem response results in groups with and without tinnitus and correlated the tinnitus location to the auditory brainstem response findings in individuals with a history of occupational noise exposure.METHOD:S
Clinics. Publicado em: 2014-07
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3. Estudo do ruído de rodagem estrutural através da análise dos caminhos de transferência de energia - TPA / Structure-borne road noise study using transfer path analysis, TPA
The road noise, vibration and harshness (Road NVH) present from 20 Hz to 1000 Hz approximately, begins from the tires vibration and acoustic propagation and their interactions with the road surfaces. In these noise sources, both structural-borne and air-borne noise contributions are relevant to vehicle refinement. The constant efforts to study the vehicle as
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 31/05/2011
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4. Analise de redução do ruído de batida de dentes de engrenagem do compressor do motor Diesel / Diesel engine air compressor gear rattle noise reduction analysis
Os requisitos de qualidade sonora estão sendo cada vez mais utilizados no mercado de caminhões médios e pesados. Assim, proprietários de veículos sentem-se incomodados pelo ruído de batida de dentes, principalmente na condição de motor na marcha lenta e o compressor de ar operando com carga. Algumas vezes o associam como falha, podendo até gerar rec
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 02/10/2009
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5. 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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6. Technical parameters for the white mold control using air- assisted hydraulic sprayer / Parâmetros técnicos para o controle do mofo-branco na cultura do feijão utilizando pulverizador hidráulico de barra com assistência de ar
The white mold, caused by the fungus Sclerotinia sclerotiorum, is one of the most destructive diseases of the bean plant in the world, especially in crops under conditions of mild temperatures and high soil and air humidity. In general, primary infections caused by this fungus start due to the presence of free water and an exogenous energy source, usually se
Publicado em: 2009
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7. Discussão sobre a pressão sonora que acomete o trabalhador da indústria da construção civil
The decision for the building construction industry was due to its dynamics, having diverse areas within a project, many construction workers are involved, and they are exposed to machinery and equipments noise. Machinery noise is the main cause of medical leave and injuries; it can also cause early retirements by the INSS [Brazilian National Institute of So
Publicado em: 2007
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8. Noise at the intermediary neonatal care unit of a university hospital in Ribeirão Preto-SP. / "Ruído na unidade de cuidado intermediário neonatal de um hospital universitário de Ribeirão Preto-SP"
This descriptive, exploratory and observational quantitative study aimed to determine ambient noise levels at the intermediary neonatal care unit of a university hospital in Ribeirão Preto-SP and dimension sound pressure levels (SPL) produced by air-conditioning, lamps at the nursing ward and the functioning of apnea monitors; alarms going off; open water t
Publicado em: 2006
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9. METROLOGICAL EVALUATION OF OPTICAL EMITTERS AND DETECTORS APPLIED TO THE CHARACTERIZATION OF ATMOSPHERIC PARTICULATES POLLUTANTS / AVALIAÇÃO METROLÓGICA DE EMISSORES E DETECTORES ÓPTICOS APLICADOS À CARACTERIZAÇÃO DE POLUENTES PARTICULADOS ATMOSFÉRICOS
The atmospheric pollution is a latent world-wide problem, and it is harmful to the health, visibility and climate. For these factors, several studies and researches have been developed to characterize the chemical composition of the pollutants, concentration, size of particles, etc, with the objective of constructing adjusted instruments for the control of t
Publicado em: 2003
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10. Influence of indoor air quality and personal factors on the sick building syndrome (SBS) in Swedish geriatric hospitals.
OBJECTIVES--Sick building syndrome (SBS) involves symptoms such as irritation to the eyes, skin, and upper airways, headache, and fatigue. The relations between such symptoms and both personal and environmental factors were studied in 225 female hospital workers, working in eight hospital units in the south of Sweden. METHODS--Symptoms of SBS and personal fa
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11. Effects of hypercapnia and hypocapnia on respiratory resistance in normal and asthmatic subjects.
The effects of hypercapnia and hypocapnia on respiratory resistance were studied in 15 healthy subjects and 30 asthmatic subjects. Respiratory resistance (impedance) was measured with the pseudo-random noise forced oscillation technique while the subjects rebreathed from a wet spirometer in a closed respiratory circuit in which end tidal carbon dioxide tensi
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12. Flow Cytometric Analysis of 5-Cyano-2,3-Ditolyl Tetrazolium Chloride Activity of Marine Bacterioplankton in Dilution Cultures
The respiratory activity of marine bacteria is an important indication of the ecological functioning of these organisms in marine ecosystems. The redox dye 5-cyano-2,3-ditolyl tetrazolium chloride (CTC) is reduced intracellularly in respiring cells to an insoluble, fluorescent precipitate. This product is detectable and quantifiable by flow cytometry in indi
American Society for Microbiology.