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As the public recognizes the importance of healthy, comfortable, and productive indoor environments, their awareness and demand for good indoor air quality (IAQ) increases. This demand has resulted in IAQ emerging as a major concern in office buildings. Many office buildings have significant indoor air pollution sources. Factors contributing to indoor air pollution include presence of indoor air pollutants, improper designed and poor maintenance or operation of air-conditioning system, insufficient air exchange and fresh air intake...

Industrial Hygiene/Chemical Exposure Monitoring is classically defined as "the anticipation, recognition, evaluation and control of workplace hazards". Over exposure to hazardous substances may cause a serious health effect to the employee. It is important to study and evaluate the possibility exposure levels to the employee so that the right and proper prevention management control may be implemented before any of the occupational disease have been suffering...

Occupational noise-induced hearing loss is one of the most common occupational hazards. Exposure to high levels of noise may cause hearing loss, create physical and psychological stress, reduce productivity, interfere with communication, and contribute to accidents and injuries by making it difficult to hear warning signals.

Occupational noise-induced hearing loss is one of the most common occupational hazards.Exposure to high level of noise...

Compressed air is a critical power resource in most manufacturing and process environments. A good and proper compressed air system can offer effective plant operation and energy savings that increase profitability and productivity. Poor compressed air not only detrimental to the process quality, but also affect significantly on the costing due to wasted energy, down time in production line and heavy repairs to equipment damaged by polluted air.

In today's modern production facilities, the use of compressed air is often pivotal...