Controls exhibited 4.6 +/- 0.3 bruxism bursts per episode and 6.2 (from 0 to 23) bruxism bursts per hour of sleep, whereas bruxers showed, respectively, 7.0 +/- 0.7 and 36.1 (5.8 to 108). Bruxism-like episodes with at least two grinding sounds were noted in 14 of the 18 bruxers and in one control.Get Price
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On average, ore is mined at a rate of 1t per man hour. Mining at Aitik started on the basis of a 50t reserve, but by 1998 the mine had yielded 300t of ore.
The table below indicates air change rates (air changes per hour) commonly used in different types of rooms and buildings. Note! - be aware that it may be necessary to calculate required supply air based on no. of persons in the room or building. More information about required supply air per person can be found here.
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Jul 25, 2019 Therefore, these tasks will generally be excluded from the scope of the standard per 29 CFR 1926.1153(a). However, employers should be aware that exposures could reach or exceed 25 µg/m 3 as an 8-hour TWA in situations where employees are working with drywall or sanding joint compound for long periods of time in very dusty conditions. In such
There is limited evidence to support the role of occlusal factors in the aetiology of sleep bruxism. Recent publications suggest that sleep bruxism is secondary to sleep-related micro-arousals (defined by a rise in autonomic cardiac and respiratory activity that tends to be repeated 8-14 times per hour of sleep).
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(Round average overhead cost per unit to 2 decimal places.) Activity Overhead Cost Activity Drivers Activity Rate Activity driver incurred Overhead assigned Activity driver incurred Overhead assigned Grinding & polishing $455,000 $13,000 Machine hours $35 per machine hour 550 +/-1$19,250 +/-15,500 +/-1$192,500