The current investigation concentrates on evaluating the performance of inhibitors added to concrete to resist corrosion. Specimens were cast with different mix proportions involving various ...

Figure 1. The sapphires in this necklace, ranging in size from 2.4 to 6.7 ct, were reportedly produced in Baw Mar. This is one of the pieces that recently made its way to the Gübelin Gem Lab; some of ...