The zein film passed the ASTM F 903 test for liquid penetration and showed adequate strength, but showed lengthwise shrinkage that was attributed to draw extrusion. Although building air filtration systems help, little is known about dispersal of spores from staff and visitor s clothing. Fabrics were contaminated in an environmental chamber with dry spore aerosol by sedimentation. An airflow chamber was built to observe spore redispersal patterns from soiled fabrics. Fiber surface morphology, moisture content, and fiber surface area per fabric area were the most important factors in spore release.
Moisture affects release of spores in an air flow.
Photomicrographs confirmed that adhesion and entrapment of spores was a fiber surface phenomenon. For vineyard pesticide applicators in NY, the typical air-assisted sprayer was compared with a tunnel or hooded sprayer. Pesticide was fairly evenly distributed on the applicator s coveralls, but the neck, shoulder and upper right arm of the right-handed driver has higher deposition than the lower left quadrant of the garment. Vineyard applicator clothing exposure can be reduced using the hooded sprayer, but extra protection is needed at the neck, shoulder and arm, with attention to the habits of the tractor driver. B. Design and Human Factors.