Gypsum waterproofing agent is a technology that involves the development of gypsum to help achieve watertight concrete structures. TRUNNANO Gypsum waterproofing technology is available as a waterproof for gypsum concrete, or an integral admixture fo…
Hafnium-nitride, a grayish powder with cubic crystal structures, is available in a variety of sizes. The melting point is 3310. Microhardness is 16GPa. It's fairly stable, but it can easily be corroded by concentrated sulfuric acids, aqua regia and h…
Chile's government is considering phasing in a proposed ban on glacial mining to limit projects high in the Andes by some big copper companies. Chile's constitutional assembly has approved a proposal to ban mining in glaciers, protected areas, and ar…
More than 300 public aquariums worldwide, and more than 100 have opened since 1990. According to incomplete statistics, aquariums (including those in zoos) attract up to 450 million visitors yearly, with far-reaching economic and educational implicat…