All articles tagged with #impurities
Diamonds can come in various colors due to impurities like nitrogen and boron, structural deformities, or exposure to radiation, with their formation influenced by extreme pressure and temperature conditions deep within the Earth. Pink and red diamonds form under specific pressure conditions, allowing scientists to trace their geographic origins and understand Earth's geological history.
Novo Nordisk has filed a lawsuit against two compounding pharmacies in Florida, Wells Pharmacy and Brooksville Pharmaceuticals, after finding impurities in their products claiming to contain the active ingredient for its weight-loss drug Wegovy. The impurities were found to be as much as 33% in some samples, and the compounded versions of Wegovy from Brooksville were also shown to be less potent than advertised. Novo Nordisk aims to prevent the pharmacies from selling products claiming to contain semaglutide, the main ingredient in Wegovy, and to stop Wells Pharmacy from making false claims about FDA approval and the health benefits of BPC-157. Novo Nordisk has already filed multiple lawsuits against other establishments offering products claiming to contain semaglutide.
Scientists have determined that LK-99, a compound of copper, lead, phosphorus, and oxygen, is not a superconductor as previously claimed. The material's properties, including levitation and drops in electrical resistivity, were found to be the result of impurities, particularly copper sulfide. Replication efforts by various research teams have failed to observe room-temperature superconductivity in LK-99. The conclusion highlights the importance of careful analysis and the need for pure samples in studying material properties.