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2672939 
Journal Article 
The Southern Great Plains Wind Erosion Maps of 1936-1937 
Cunfer, G 
2011 
No 
Agricultural History
ISSN: 0002-1482
EISSN: 1533-8290 
85 
4 
540-559 
WOS:000296474100005 
In 2005, an investigation conducted on three nanoscale attrition millers in Taiwan revealed that all three had undergone metal nanopowder explosions in the past. This research was aimed at determining the relationships between the particle diameter of an aluminum nanopowder and its maximum explosion pressure (P(max)), maximum rate of pressure rise ((dP/dt)(max)), minimum explosion concentration (MEC), and minimum ignition energy (MIE) by 20 liter apparatus and 1.2-L Hartmann apparatus. The results revealed that 35-nm aluminum powder has a P(max) of 7.3 bar and deflagaration index (K(St)) of 349 bar.m/s, in 100-nm aluminum powder, P(max) of 12.5 bar and K(St) of 296 bar.m/s and 40-mu m aluminum powder, P(max) of 5.9 bar and K(St) of 77 bar.m/s. The value of (dP/dt)(max) for the 35-nm aluminum powder is 4.5 times that for the 40-mu m aluminum powder. The 35-nm, 100-nm, and 40-mu m powders have MEC values of 40, 50, and 35 g/m(3), respectively. The 35-nm and 100-nm powders both have MIEs less than 1 mJ, while the 40-mu m powder has an MIE of 59.7 mJ.