In this article we discuss the problem of one-way image transmission through multi-layer of thin distorting media: a special case of thick distorter. We prove the possibility of transmitting image through two layers, as well as multi-layer, of thin distorting media via degenerate four-wave mixing. The theoretical analysis is verified by the experimental results for two thin distorters.

We give a general formula of doubly tagged cross sections for small mixing D°-D°systems. The contamination from doubly Cabibbo suppressed nonleptonic decags to the like–sign events may be cancelled if the neutral pseudoscalar meson pair is in the C-parity odd state which happens in the e⁺e^- collider at ψ" resonance.

The sheet resistance R_s and temperature coefficient of resistance (TCR) α (25-100°C) of amorphous Ni₆₈Si₁₅B₁₇ films have been measured. The structure of films with R_s between 80-550Ω/sq. are more stable and have a lower TCR ( 10^-6K^-1-10^-5K^-1). In this range of R_s, TCR may change its sign, and the activation energy is much larger.

The mean spin-rotation coupling γN of NaXe rnolecules is measmed by observing the sodium spin relaxation rate. It is in reasonable agreement with a recently presented theoretical expression.

The topological aspect of the loops which wind themselves any times is investigated in detail. It is showm that the Schwinger-Dyson equations of the loops with the winding numbers larger than N give no extra physical information.

This letter reports a fully dynamic analysis of a moving defect with a plastic zone. The fields of stress and displacement of this defect are determined, so that the opening displacement at the tip of the defect is obtained. Based on it the author proposes a criterion of nonlinear dynamic fracture of solids.

Using the Σ^- form factor it is shown that the Donnachie-Landshoff pomeron gives a good description of the high energy total and elastic differential cross-section data for Σ^-p scattering.

Using dye laser as pumping light source, we have first realized on NYAB crystal the laser self-frequency doubling run from 1.06μm to 0.53μm . The threshold energy is less than 4mJ; conversion efficiency is 6.2%, and the self-frequency-doubling green light output energy is 2.5mJ.

The integral of the pulse self-demodulation in acoustic parametric array can be calculated in light of the Fourier convolution theorem. Instead of a rectangular pulse with two discontinuous edges, two kinds of primary envelopes are used, the waveforms and their spectra are investigated. An optimal ratio of the primary duration has been found theoretically. Experimental results support this theory.

A microscopic calculation has been carried out based on the random phase approximation (RPA) with deformed Woods-Saxon basis for k^π = 1⁺ rnode in deformed nuclei. The calculation shows that the orbital part of the magnetic dipole ( Ml ) operator plays a dominant role in exciting M₁ (k^π = 1⁺ ) mode. A fragmentation of the strength in the energy range of 2-4MeV has been found.

The anomalous dips A₁A₂ of mobility of zero-gap Hg_1-xCd_xTe in temperature range about 12K and 28K have been studied. The Hall coefficients vs. temperature are measured in high magnetic field. It shows that instead of the interband optical phonon scattering, the anomalous dip A₂ is caused by the acceptor resonant state.

Continuous time random walk (CTRW) is studied in the case of momentless waiting time distributions with long-time tail t^-α, 0 < α < 1. It is found that the hopping event set is a well defined random fractal whose fractal (Hausdorff) dimension is α, and if one quantity of discrete time random walk R(n) [e.g., S(n) the number of distinct sites visited up to step n ] has scaling exponent β > 0, then its corresponding quantity of CTRW R(T) (e.g., S ( t ) the number of distinct sites visited up to time t) has scaling exponent αβ.