fouth
5.Based on the discussion of hydrogeological condition of the fouth aquifer of Cenozoic Erath-em and the weathered zone of bedrock in Linhuan mining area, the cause of shaft wall damage is analysed.
6.Fouth, the method of compress--ing the image BMP files to JPEG files is introduced in this paper. It involves thecolor model principle, DCT (disperse cosine translation), Zig-Zag translation,quantify, AC encoding, DC encoding, sampling coefficient, the decoding of JPGfiles.
7.The fifth harmonic generation by mixing Nd:YAG laser fundamental and its fouth harmonic radiation using BBO crystal at room temperature is reported. The energy conversion efficiencies of fourth hamonic to fifth harmonic as high as 48% have been achieved.
