Abstract This paper reviews the recent advances on the high-performance distributed Brillouin optical fiber sensing, which include the conventional BOTTOMS distributed Brillouin optical fiber sensing based on backward stimulated Brillouin scattering and two other novel distributed sensing mechanisms based on Brillouin dynamic grating and forward st
In order to ZZZZFEMALE STIM find out the reason for the bogie frame instability alarm in the high-speed railway vehicle, the influence of wheel tread profile of the unstable vehicle was investigated.By means of wheel-rail contact analysis and dynamics simulation, the effect of tread wear on the bogie frame lateral stability was studied.The result i
Metal industry is the source of many chemical hazards and their synergic effects could damage the health of occupationally exposed population.The Tanning Products application of toxicological analysis in this paper was to investigate the risk of toxic metals and other chemical hazards in the workplace.The aim is to demonstrate and quantify indicato
Objectives: To evaluate compliance with the self-regulation agreement of the food and drink vending machine sector in primary schools in Madrid, Spain.Methods: Cross-sectional study of the prevalence of vending machines in 558 primary schools in 2008.Using the directory of all registered primary schools in Madrid, we identified the presence of mach
Low back pain (LBP), caused by intervertebral disc (IVD) degeneration, is a major contributor to global disability.In its healthy state, the IVD is a ALL BLONDES RICH SHAMPOO tough and well-hydrated tissue, able to act as a shock absorber along the spine.During degeneration, the IVD is hit by a cell-driven cascade of events, which progressively lea