OBJECTIVE The aim of this study was to estimate the content of peptidoglycans in cutting fluids (CFs) and to assess the possibility of using them as a marker of bacterial contamination in this type of occupational environment. MATERIALS AND METHODS A total of 11 samples of CFs were collected: 8 were taken from the working machine systems and 3 were unused CF samples. The peptidoglycans were d...

A previously healthy man working as a machine operator in an automotive factory developed respiratory symptoms. Medical evaluation showed abnormal pulmonary function tests, a lung biopsy showed hypersensitivity pneumonitis, and his illness was traced to his work environment. His physician asked the employer to remove him from exposure to metalworking fluids. Symptoms reoccurred when he was late...

Molecular dynamics simulation (MDS) was carried out using two types of interatomic potential function (a modified version of the Tersoff potential and an analytical bond order potential (ABOP)) to acquire an in-depth understanding of the material flow behaviour of single crystal silicon during nanometric cutting on three principal crystallographic planes and at different cutting temperatures. T...