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40 exposed production workers from the crusher and packing se ctions and 20 controls from the guards were included. Personal "total" dust was measured in the workers' breathin g zone and peak expiratory flow (PEF) was measured for all selected workers before and after the shift. When the day shift ended, the acute respiratory symptoms experienced

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Within the EU funded FieldFOOD project, a PEF treatment chamber was located after the crusher in a line with a processing capacity of 4 Tn/h. PEF treatment improved the extraction between to g of extracted olive oil per kilogram of processed olives for a malaxation time of two hours.

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Apr 14, 2010· Few studies have been carried out on acute effects of cement dust exposure. This study is conducted to investigate the associations between current "total" dust exposure and acute respiratory symptoms and respiratory function among cement factory workers. A combined crosssectional and crossshift study was conducted in Dire Dawa cement factory in Ethiopia. 40 exposed production .

Apr 14, 2010· Few studies have been carried out on acute effects of cement dust exposure. This study is conducted to investigate the associations between current "total" dust exposure and acute respiratory symptoms and respiratory function among cement factory workers. A combined crosssectional and crossshift study was conducted in Dire Dawa cement factory in Ethiopia. 40 exposed production .

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Apr 14, 2010· The percentage acute crossshift change in PEF was calculated as [(postshift PEF preshift PEF)/preshift PEF] times 100. PEF monitoring has been found to be reliable and inexpensive tools in assessing acute lung function in the cement industry with less cost than ordinary spirometer .

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