A novel distributed fiber optics sensor used for road vehicle information collection system was proposed. Optical fiber was fixed on the road surface to be used as the sensing media. The vehicle information such as speed, vehicle type, vehicle weight and traffic flow can be obtained. To increase the sensitivity of such sensor, an optical Fabry-Perot (F-P) fiber interference was used. Sensing optical fiber was designed to be with a metal coating for fiber protection and high performance. Experiment results show that such distributed fiber optics sensor may be with a high performance in transportation area without digging when it is installed on the road surface.

Polypropylene fibers were dyed with Disperse dyes Blue 2B in Supercritical Carbon Dioxide at different temperature, pressure and time. The K/S value were determined and the effect of as temperature, pressure and dyeing time on the dyeing behaviours of disperse dyes on Polypropylene fibers were discussed. It was found that with the increase of dyeing temperature and pressure, the K/S value increased gradually, and dyeing effect was best after the fiber was dyed at 120 °C, 28 MPa for 20 min.

The surface of polyacrylonitrile fibers and membrane were modified by nitrilase from Escherichia coli BL21 (DE3)/pET-Nit. Escherichia coli BL21(DE3)/pET-Nit was able to convert nitrile groups on PAN fibers and membrane to corresponding carboxylic acid as indicated by X-ray photoelectron spectroscopy (XPS). An increase of O/C atomic ratio on the fiber and membrane surface showed an increase in hydrophilicity and fabric-dyeing efficiency. Strength of treated fiber decreased by only 1.17%, because only surfacial nitrile groups of acrylic fibers were hydrolyzed by E.coli BL21(DE3)/pET-Nit.

Polypropylene filament was used as the warp yarn, and respectively Basalt filament and Polypropylene filament was applied to the weft yarn, several samples were woven in different organizational structure. Then the effect factors of filtration were tested, and permeability, abrasion resistance and air permeability of these samples were measured, filtration resistance was evaluated indirectly through the Flow Tester. How the influence of the performances of raw material the filtrating properties of the samples were investigated, which based on the above experiment, as well as the other factors. The results show that permeability and air permeability had little change in the same process parameters, however, abrasion resistance of the samples by basalt filament significantly were superior to the performance of polypropylene filament.

The paper concentrated on the optimization of the recombinant strain BL21 (DE3)-PE7-Nit. The component of culture medium and the culture conditions were optimized. The optimized medium was: yeast extract 10 g/l, L-glutamate sodium 8 g/l, MgSO4.7H2O 0.7 g/l, Isopropyl-β-D-thiogalactopyranoside 0.3 mmol/L, potassium hydrogen phosphate 0.5 g / L, phosphate Potassium 0.5 g / L and the culture condition was: initial pH 7.0, inoculum 2%. The result showed that the activity of nitrilase prepared with these conditions increased by 130.37 % through optimization.