It is pointed out that the main purpose of introducing the ecological figure of merit of a thermodynamic cycle is to make the best compromise between the rate of function and its dissipation of the cycle.

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.

Measurement of permeability and Q-factor of ferrite toroids;

Obtained results show that a proper amount of mixed Bi2O3-Nb2O5 addition could promote effectively not only densification,decrease in grain size,and improve uniformity of crystalline grains,but also Q-factor of specimen.

The quality factor (Q-factor) of the resonators is calculated and the affection of the photonic crystal s structure and the defect s geometrical parameters on the resonance characters are analyzed.