sp. nov., isolated from farmland soil.

A Gram-stain-negative bacterial strain, designated JW-3, was isolated from a soil sample collected from farmland in Yantai, Shandong Province, PR China. Cells of strain JW-3 are motile rods and strictly aerobic, showing catalase- and oxidase-positive reactions. Strain JW-3 could grow at 16-37 °C (optimum, 30 °C), at pH 6.

Chitinophaga deserti sp. nov., isolated from desert soil.

An aerobic bacterial strain, designated XJ-2, was isolated from a soil sample collected from Gurbantunggut Sandy Desert in PR China. Cells of strain XJ-2 were Gram-stain-negative, non-motile, rod-shaped and non-spore-forming. The new isolate grew well at 10-37 °C (optimum, 28-30 °C), pH 6.

Tunable photonic bandgap in a one-dimensional superconducting-dielectric superlattice.

The transmittance of one-dimensional photonic crystals consisting of superconductor and lossless dielectric has been systematically studied through the transfer-matrix method. Obviously, the shift of the photonic bandgap (PBG) becomes more noticeable by adjusting the thicknesses of the dielectric layers than that of superconductor layers. Furthermore, the number of PBGs can be controlled by varying the thicknesses of dielectric layers.