Weighing, effect vibration

One way to include these local quantum chemical effects is to perform ab initio calculations on an HOD molecule in a cluster of water molecules, possibly in the field of the point charges of the water molecules surrounding the cluster. In 1991 Hermansson generated such clusters from a Monte Carlo simulation of the liquid, and for each one she determined the relevant Bom Oppenheimer potential and the vibrational frequencies. The transition-dipole-weigh ted histogram of frequencies was in rough agreement with the experimental IR spectrum for H0D/D20 [130],... 

Cohesion. This test is used for very fine powders (below 70 pm). Material is passed through three vibrating sieves in series. The material left on each sieve is weighed and a cohesion index is determined from the relative amounts retained. Carr19 defined cohesion as the apparent surface force acting on the surface of powders, which are composed of millions of atoms. The number of points of contact within the powder mass determines the effect of this force. Thus, cohesiveness increases with decreasing particle size, since the number of contact points increases as the particle size decreases. 

Basically, each hopper is mounted on a separate weigh-load cell specially designed and isolated to minimize the effects of on-machine vibration and electrical interference. This unique load cell approach updates the controller with weight information so that it can adjust the motor speed for any necessary blend corrections. If the bulk density of any component changes, the... 

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