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Effects of sound generated by a dental turbine and a small stream (murmur) and the effects of no sound (null, control) on heart rate, systolic and diastolic blood pressure, and hemodynamic changes (oxygenated, deoxygenated, and total hemoglobin concentrations) in the frontal cortex were measured in 18 young volunteers. Questionnaires completed by the volunteers were also evaluated. Near ...
Get PriceDental Air Turbine sound depends on the mechanical performance such as rotation and it is impossible to neglect connections of the sound with fluid mechanics and acoustics. Turbine sound must be considered from the standpoint of the sound pressure level and frequency component. In this study, the sound samples was measured and analysed in ...
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Get Price2021-4-19 · Elsen Different sound source setups in the simulation of wind turbine sound propagation Dutilleux Meteorological effects on wind turbine noise at the receptor location ... and the implementation of the IOA Good Practice Guide to the Application of ... Old Wind turbine sound quality rating Busse The (psychoacoustic) basics of tonality perception ...
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Get PriceA study, Wind Turbine Sound and Health Effects, was conducted in 2009 by a panel of medical professionals from the US, Canada, Denmark, and UK. The study concluded, “There is no evidence that the audible or sub-audible sounds [including infrasound] emitted by wind turbines have any direct adverse physiological effects.”
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Get Price2021-7-14 · the quality of the subsets used for training and testing. Poor data splitting can result in. ... which analyzed the operating conditions of the wind turbine based on the sound pressure.
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Get Price2012-3-13 · QUALITY CONTROL PROCEDURES The foundation for a successful Quality Assurance program is the quality control maintained by the Producer to assure that all materials submitted for acceptance conform to the contract requirements. To accomplish this, the Producer is required to have a functional plan to keep the process in control,
Get Price2013-3-5 · Sound and visual impact are the two main public health and community concerns associated with operating wind turbines. Most of the sound generated by wind turbines is aerodynamic, caused by the movement of turbine blades through the air. There is also mechanical sound generated by the turbine …
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Get Price2017-7-3 · Quality objectives are goals for the value of products, services and processes. It is a basic quality management process to establish a set of quality objectives. Unlike a quality policy, that is set at the top level of an organization, quality objectives can be specific to a department, team, process or project.The following are common types of quality objective.
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