Under the law, companies do not need to list the chemicals used to make fragrances. \"We as consumers have the right to know what we put physically,\" said Sean Gray, senior analyst at the Environmental Working Group, who conducted research for the safe cosmetics campaign. \"Some hidden chemicals you don\'t know can have an impact on human health.
The performance of this material series can be enhanced by replacing la with other elements. By replacing ce (Ce)For la, Fujita, etc. (2004)It can change entropy with the increase of magnetism-30 J/kg. K is a compound of 10% ceriumsubstitution. Fujieda et al. (2006)Modern Hair (Pr)For la, when magnetized from 0 to 5 Tesla compared to similar materials without la replacement, entropy change and temperature change increased by more than 30%.