We have determined the drift of the fundamental frequency in the Lorenz model from a large amount of power spectra. This opens the possibility to devise an "absolute" nomenclature for various periods seen in the bifurcation diagram.

We suggest a method to determine analytically the parameter values of all superstable periods and the equations of dark lines seen in various bifurcation diagrams, plotted for a bimodal mapping related to a hybrid optical bistable device in which liquid crystal was used as the nonlinear medium.

Almost all the atoms in the hyperfine sublevel F=4, m_F =0 (“clock level") of cesium ground state have been pumped out by using a laser diode tuned on the Cs-D₂ line; and 15.2% population difference (|δ_oo|) which is more than two times better than what the traditional magnetical selecting state method could provide is found. This experimental result can be applied into building an optically pumped Cs beam frequency standard and better performance will be expected.

The method proposed by Fan et al. has been applied to the discrimination of the doublets arising from the experimental OAS (one-wave-length anomalous scattering) data of the Hg-derivative of APP. Encouraging result was obtained which showed that the method is hopeful to be an important tool in the structure analysis of protein crystals.

The focusing phenomena of SAW excited by an IDT with sinusoidal wavefront and linearly chirped periodic distribution has been explored. Some experimental results are compared with theoretical one and agree with it fairly well.

We have obtained the highly excited state spectrum of toluene using ultraviolet two-photon resonance three-photon ionization. We assign the observed structure to three new Rydberg series converging to the first ionization potential.

We present a new solution (g_ab,F_ab) of Einstein-Maxwell equations, where g_ab is plane-symmetric while F_ab is not fully plane-symmetric.

An experiment designed to study the dispersion relation and nonlinearity of surface water waves in a trough is discussed.

The idea of using grazing angle ion sputtering to minimize the-formation of In islands on InP(111) surface has been presented and its correctness has been proved by the measurement of electron energy loss spectroscopy.

A new experiment on an electric circuit with non-linear ferromagnetic cores is designed to show the roads to chaos. The phase figures of the bifurcations of division of frequency and chaos in the three-dimensional parameter space are reported.

The shape of directed lattice animals is studied by introducing a new exponent, v_F, discribing the divergence of the front width of the animal clusters. In two dimensions, the results from exact enumerations and real-space renormalization group method suggest that v_F = 0.43 ± 0.03.

We have identified three kinds of hydrogen-related (HR) irradiated defects in Si crystals grown in H atmosphere. They are located at 0.08eV and 0.20eV below the conduction band and 0.l0eV above the valance band respectively. Because they have different annealing temperatures, they are not the different charged states of the same defect center but correspond to different centers.