These ceramics showed high mechanical quality factor,low dielectric loss,high Te.

Aging effect (in both one and two steps)on the frequency temperature coefficient γf and the mechanical quality factor Q of Fe-Ni-Cr-Ti Elinvar alloy was studied.

It was found that with an increase of Pb(Mn1/3Nb2/3)O3,the phase structure changed from tetragonal to rhombohedral and the proper amount of Pb(Mn1/3Nb2/3)O3 would improve elctromechanical coupling factor kp and mechanical quality factor Qm simultaneously,kp=0.

A method to calculate the average quality factor value ■ of strata;

Amplifying of the quality factor of AFM microcantilevers in liquid environment;

Definition of the quality factors Q of parallel and serial resonant circuits according to the exchange of energy;

Based on the definition of Q factor,when the loss of inductor should be considered,the tie between the unloaded quality factor QP of LC resonant circuit and the intrinsic quality factor Q0 of inductor coil is:QP=Q20-1(1+1/Q0),QP=Q0,while Q01.

By way of a study on the near-surface seismic wave dual transmission mechanics,the paper discussed the relation between the Q factor and shothole depth,then according to the maximum seismic shot wave energy,maximum signal-to-noise ratio and shothole depth correlation curves of different area,different Q factor,worked out corresponding shot depth.

The microring resonator was fabricated by using CMOS compatible processes with 1 μm wide waveguides and 400 μm in radius,which has a high Q factor up to 20,000 and a Free spectrum range of 0.