ANOVA showed a significant difference in mean damage ranking between the different treatments: the treatments with no abrader (Treatments 1, 2, and 3) were significantly lower than all treatments with abrader; Treatment 7 was significantly higher than all other treatment means; Treatments 4-7 were all significantly different from each other, with the damage at each of these treatments increasing from Treatment 4 to 7.
Treatments 2 and 3 aimed to test the effect of wind alone on the plant growth and grain yield by securing the soil surface to prevent sediment transport from the bed and not introducing abrader.
The DIN 2200 is said to be the only known DIN abrader with a digital speed adjustment and digital distance adjustment with an accuracy of 0.
A sample of compound can be rotated as it moves across the DIN abrader drum, showing the effects of multidirectional abrasion.
Some contexts yielded tools clearly used in bead-making: flint drills, knives or saws, miniature mortars, sandstone abraders and limestone worktables.
Ground stone items were small sandstone abraders and work-slabs with cut-marks and percussion marks.
These experiments used tools of antler and stone as percussors, and pieces of coarse sandstone as abraders
and grindstones [ILLUSTRATION FOR FIGURE 6 OMITTED].
com Instrumentation: Testing technologies for rubber, including durometers/IRHD hardness testers, Goodrich flexometers, DIN abraders
, rebound resilience testers, tensile testers and more
Providence, RI 02908 (401) 331-5650 Fax: (401) 331-5685 Types of machinery: Tensile testers, rheometers, viscometers, impact testers, abraders
, brittlepoint, test tube alum.
Other equipment in the laboratory includes an elastomer and TPV flocker/extruder line, glass chisel abraders
, an Atlas Crockmeter for chemical abrasion testing, vibration test equipment, an injection molding machine, a small scale Ross mixer, chain-on-edge spray equipment, robotic dip equipment, a tumble spray unit, MMD units, a MetalJacket pilot line, an off-line flocker, Instron tensile testers, salt fog chambers, UV cure and coating equipment, freezers and more.