Using the Banach contraction mapping theory,we investigate the existence and uniqueness of asymptotical almost periodic solutions for differential equations with reflection of the argument(t)+ax(t)+bx(-t)=f(t,x(t),x(-t)),b≠0,t∈R.

Under pseudo almost periodic function condition on the nonlinearity f,it is investigated that the existence of pseudo almost periodic solutions for differentional equations with reflection of the argument(t)+ax(t)+bx(-t)f(t,x(t),x(-t)),b≠0,t∈R.

Investigation of laser aberration compensation using an intra-cavity deformable mirror;

The measurements of some important parameters of 13-segment bimorph deformable mirror;

In these systems, two novel types of 19 and 37 element small PZT deformable mirrors are used as wavefront correctors respectively, wavefront errors are measured by Hartman-Shack wavefront sensors, light of diode laser reflected from the eye retina is used as the beacon for wavefront sensing, After the wavef.

The use of unstable resonator with variable reflectivity mirrors can make it become true.

The beam width W(z) of a ouput laser beam from a variable reflectivity mirror resonator has been derived and analysed.

With the technique of￣3H-TdR label and autoradiographic electron-microscope,an ex-perimental study on localization and variation of DNA synthesis of imbibition rice embryos was giv-en in this paper,and a series of electron-micrograph have been obtained.