Membranes formed by polysulfonamide(PSA)and phosphotungstic acid(PWA)supported on nano-silica have been prepared.Fourier transform infrared spectra(FTIR)and the
For garment or fabric appearance, the cloth smoothness grade is one of the most important performance factors in textile and garment community. In this paper, o
The prevalence of HIV/AIDS infection has increased greatly in China. In order to strengthen the cooperation from all fields to improve efforts in preventing HIV