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Showing 1 to 12 of 12 for “"ANR"”.
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An Investigation of Performance Limitations in Active Noise Reduction Headsets
… performance of an active noise reduction (ANR) headset is limited by phase lag. Speaker dynamics, control hardware, and acoustic wave propagation from the control speaker to the error microphone all contribute to this phase lag. Understanding these sources of phase lag and their relative …
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The Detection of Warning Signals While Wearing Active Noise Reduction and Passive Hearing Protection Devices
… when individuals wore an active noise reduction (ANR) hearing protection device (HPD), a passive HPD, or no HPD. An ANR earmuff, a passive earmuff, and a user-molded foam earplug were tested in two types of noises (pink and red) at two different noise levels (85 dBA and 100 dBA). The signal used …
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Active noise reduction headphone measurement: Comparison of physical and psychophysical protocols and effects of microphone placement
… in the United States, Active Noise Reduction (ANR) headphones cannot be tested and labeled as hearing protection devices (HPDs) due to inherent limitations with the existing psychophysical headphone testing standard, real-ear attenuation at threshold (REAT). This research focused on the use of …
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Active Noise Reduction Versus Passive Designs in Communication Headsets: Speech Intelligibility and Pilot Performance Effects in an Instrument Flight Simulation
… the effects which active noise reduction (ANR) headsets have on the permissible exposure levels (PELs), speech intelligibility, workload, and ultimately the pilot's performance inside the cockpit. Eight instrument-rated pilot participants flew through different flight tasks of varying …
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On Implemintation of Loudspeakers for Feedback Control, Open-Air, Active Noise Control Headsets
The loudspeakers used in active noise reduction (ANR) headsets are generally identical to loudspeakers used in commercial headphones. Unfortunately, the frequency response characteristics of these loudspeakers are not particularly well suited for open-air active noise control (ANC). Open-air …
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Cura e armazenamento de batatas destinadas ao processamento industrial
… açúcares redutores (AR), açúcares não redutores (ANR), coloração dos palitos após a fritura e a taxa de regeneração da periderme após o dano. A cultivar Markies a 6,9 oC, apresentou menores concentrações de AST e AR nos tubérculos aos 78,4 e 92,9 dias de armazenamento, respectivamente. A atividade …
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Metabolic regulation of denitrification in the opportunistic pathogen Pseudomonas aeruginosa
… master regulator of (anaerobic) denitrification, Anr, is of limited utility under aerobic conditions. I then examined how a loss of denitrification capabilities affects the redox state of the cell. I hypothesised that under conditions that promote rapid growth, I would observe an increase in NADH …
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Évaluation des comportements alimentaires et des comportements d'activités physiques des employé-es du Centre universitaire de Moncton (CUM) et évaluation de l'efficacité d'un programme de promotion de la santé
… (GAC) et les apports nutritionnels recommandes (ANR) servirent de base a l'evaluation nutritionnelle. Les comportements relies a l'activite physique furent quant a eux evalues a l'aide du rappel de 7 jours et d'un questionnaire sur l'acivite physique. Des donnees anthropometriques furent aussi …
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Qualidade de frutos de tangerineira ‘Dancy’ colhidos de plantas de diferentes municípios do território da Borborema.
… TA ratio, reducing (RS) and non-reducing sugars (ANR), and flavonoids increased as maturation progressed. The firmness and contents of ascorbic acid decreased as maturation advanced. During maturation was observed that the content of total extractable polyphenols-PET increased until the maturity …
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Phytochemical diversity and genetics of purple corn
… biosynthesis, an anthocyanidin reductase (ANR) associated with flavonol synthesis, and MATE transporters that may function in more efficient vacuolar sequestration of acylated anthocyanins. In addition to GWAS, GS was used to predict anthocyanin content in AR. Five-fold cross validation …
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Le stress perçu, les attitudes envers la nutrition et leurs influences sur le comportement alimentaire des étudiants de l'Université de Moncton
… pas les apports nutritionnels de référence (ANR) en calcium et en magnésium. L’ensemble des étudiants a un apport excessif en protéine, thiamine et riboflavine. Chez les quatrièmes années en fin de session, on observe aussi, une corrélation négative significative entre le stress perçu et la …
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Identifying and characterizing genes and transcription factors involved in coloration of apple fruit
… encoding apple anthocyanin reductase gene (MdANR) were isolated, designated as MdANR1, MdANR2a, and MdANR2b. It is found that MdANR2a, and MdANR2b are in fact allelic. MdANR1 and MdANR2 were mapped to the apple linkage map on linkage groups (LG) 10 and 5, respectively. The functionality of …