Context. A sample of 895 s-process-rich candidates has been found among the 454 180 giant stars surveyed by LAMOST at low spectral resolution ( R ~ 1800). In a previous study, taking advantage higher 86 000) offered HERMES-Mercator spectrograph, we performed reanalysis 15 brightest this sample. Among these programme stars, which have close-to-solar metallicities, 11 showed mild to strong heavy-...

Quality, reliability, and durability are the key features of photovoltaic (PV) solar system design, production, operation. They considered when manufacturing every cell designing entire system. Achieving these ensures that PV performs satisfactorily offers years trouble-free operation, even in adverse conditions. In each cell, quality raw material should meet standards. The fulfillment manageme...