This study investigates the effectiveness of vegetation reinforcement on stability a slope with red-bed soft rock in along Xining-Chengdu railway, China. Four kinds were considered to reinforce soil and slope. The rooted parameters determined based laboratory tests. A numerical model was developed actual geometry layer distributions. soils modeled as elastic perfectly plastic materials represen...

We have established a procedure for removing interfering materials from extracts of geological and biological samples, in order to determine precise compound-specific nitrogen isotopic compositions of amino acids. We employed cation-exchange chromatography of protein and non-protein amino acids prior to derivatization for gas chromatographic separation. The average recovery of a standard amino ...