Catalytic asymmetric 1,2-allylation of aurone-derived azadienes is very difficult to achieve due to the driving force for aromatization and the greater steric hindrance of 1,2-addition compared with 1 ...

The AWWA C901-25 Standard detailing pressure pipe for use in potable water, reclaimed water and wastewater service lines ...

Learn More › The type and size of plumbing pipe chosen for any application depends on how the material will be used, the water pressure needs of the home, the drainage requirements, the specific ...

Global stock markets have largely shrugged off President Donald Trump’s renewed tariff campaign. In commodities markets, however, tariff threats have sent the price of copper soaring to all-time highs ...