<![CDATA[انجمن بهداشت حرفه ای ایران - Physical agents]]> https://www.occupationalhealth.ir/ Mon, 01 Jun 2026 01:55:54 +0000 MyBB <![CDATA[Calculation of TWA and Noise Dose]]> https://www.occupationalhealth.ir/thread-2959.html Fri, 13 Jul 2018 16:15:15 +0430 https://www.occupationalhealth.ir/thread-2959.html Calculation of TWA and Noise Dose
Calculation of TWA and Noise Dose of an 8-hour Day
Calculation of Noise level and Permissible Duration at any Location
Construction of Noise Contour Map of a Facility
Estimation of Ambient and Machine Noise Levels
Determination of Minimax Work Assignments
Determination of Minimum Number of Workers (under 90 dBA
Determination of Alarm Device Locations
Determination of Dominant Facility Locations
Page: 10
File: PDF
Calculation of TWA and Noise Dose.pdf

.pdf   Calculation of TWA and Noise Dose.pdf (اندازه 969.83 KB / تعداد دانلود: 80)
]]> Calculation of TWA and Noise Dose
Calculation of TWA and Noise Dose of an 8-hour Day
Calculation of Noise level and Permissible Duration at any Location
Construction of Noise Contour Map of a Facility
Estimation of Ambient and Machine Noise Levels
Determination of Minimax Work Assignments
Determination of Minimum Number of Workers (under 90 dBA
Determination of Alarm Device Locations
Determination of Dominant Facility Locations
Page: 10
File: PDF
Calculation of TWA and Noise Dose.pdf

.pdf   Calculation of TWA and Noise Dose.pdf (اندازه 969.83 KB / تعداد دانلود: 80)
]]> <![CDATA[Lecture6-Noise]]> https://www.occupationalhealth.ir/thread-2958.html Fri, 13 Jul 2018 15:47:17 +0430 https://www.occupationalhealth.ir/thread-2958.html Lecture6-Noise
Introduction and Definitions
Noise and Sound
Noise
Noise-Induced Hearing Loss (NIHL
Physics of Sound
Octave Bands
Sound Pressure
Decibel Notation
Sound Pressure Level (SPL) and Sound Pressure (Pa

Sound Pressure Exercises
Adding Sound Pressure Levels
Sound Weighting Factors

Page: 48
File:PDF
Lecture6-Noise.pdf

.pdf   Lecture6-Noise.pdf (اندازه 391.74 KB / تعداد دانلود: 20)
Patrick N. Breysse, PhD, CIH
Peter S.J. Lees, PhD, CIH
Johns Hopkins University
]]> Lecture6-Noise
Introduction and Definitions
Noise and Sound
Noise
Noise-Induced Hearing Loss (NIHL
Physics of Sound
Octave Bands
Sound Pressure
Decibel Notation
Sound Pressure Level (SPL) and Sound Pressure (Pa

Sound Pressure Exercises
Adding Sound Pressure Levels
Sound Weighting Factors

Page: 48
File:PDF
Lecture6-Noise.pdf

.pdf   Lecture6-Noise.pdf (اندازه 391.74 KB / تعداد دانلود: 20)
Patrick N. Breysse, PhD, CIH
Peter S.J. Lees, PhD, CIH
Johns Hopkins University
]]>