Six aromatic compounds including a new (Z)-ferulic acid ester (1) and a new syringic acid ester (2), as well as four known ferulic acid esters (3–6), were isolated from a well-known edible mushroom, Pleurotus eryngii. Structures of these aromatics were unambiguously characterized via spectroscopic methods especially MS and NMR techniques. All the isolates were assessed for their antiradical effect and NO production inhibitory activity in RAW264.7 macrophages, and compounds 1 and 3 displayed mild DPPH radical removing activity, with IC50 values of 25.0 and 21.6 mM, respectively.

A systematic cutting test was conducted turning normalized AISI1045 carbon steel with two kinds of Ti (C, N)-based cermet cutters, which were made with micron and nanometer TiC powders. And the cutting performance and abrasion mechanism was discussed in the article. The effect of tool orthogonal clearance on tool life was also researched in this paper. Results showed that: The tool life was affected seriously by tool orthogonal clearance angle, and the optimum tool orthogonal clearance angle of Ti (C, N)-based cermet cutter was 5°when cutting normalized AISI1045 steel. The cutting Performance of Ti (C, N)-based cermet cutters which were made with nanoTiC powders was better than the ones which were made with micron TiC powders obviously. And the primary wear behaviors were wear.