Morphologies,compositions and structures of the sludge, Al(OH)3 colloid and α-Al2O3 powder were characterized by field scanning electron microscopy(FESEM),energy dispersive spectra(EDS) and X-ray powder diffraction(XRD).
The results show that the higher ball milling energy may be obtained when the ball-to-powder mass ratio is 20∶1,and rotation speed is 500 r/min. The solid-state reaction between Y2O3 and Al2O can be activated to compose YAlO3(YAP),with mechanical alloy in 10 hours.
Finite energy band-limited functions are reconstructed iteratively
When, in addition, the Tolimieri-Orr condition A is satisfied, the minimum energy dual windowoγ ε L2(?) can be sampled as well, and the two sampled windows continue to be related by duality and minimality.
Finite-energy high frequency signals, band-pass frequency signals, and band-stop frequency signals are characterized.
We use the analytic tools such as the energy, and the Laplacians defined by Kigami
On Global Finite Energy Solutions of the Camassa-Holm Equation