Risks of testing for prostate cancer include: 1  a raised PSA level does not always indicate prostate cancer and biopsies will be needed to check if cancer is present. 2  biopsies and treatments for prostate cancer have harmful side-effects that may affect quality of life.
fume (plural fumes) 1  A gas or vapour/vapor that smells strongly or is dangerous to inhale. Fumes are solid particles formed by condensation from the gaseous state, e.g. metal oxides from volatilized metals. 2  A material that has been vaporized from the solid state to the gas state and re-coalesced to the solid state.
The primary airborne contaminant found in arc welding is welding fume. Welding. fume is a complex mixture of very small particles of metal oxides. The specific. components depend on the composition of the welding electrode (stick, wire or filler. rod), base metal, surface coatings and the type of shielding gas or flux. Respiratory Protection Basics for Welders. Clifford Frey, CIH.