Per- and polyfluoroalkyl substances (PFAS) are synthetic organofluorine compounds that accumulate in the environment due to significant industrial use and resistance to degradation. PFAS are of global ...

College of Mathematics and Computer, Jilin Normal University, Siping 136000, P. R. China ...

For decades, atomic clocks have been the pinnacle of precision timekeeping, enabling GPS navigation, cutting-edge physics research, and tests of fundamental theories. But researchers are now pushing ...

Daisy Unsihuay Vila of Henry Ford Health (Detroit, Michigan) was awarded the 2025 Agilent Technologies and Females in Mass ...

GRPC peptides are found in the entire body. Isolation of seven classic GRPC peptides initiating in the GI tract could implicate disease.

and the nucleus of chlorophyll is known with certainty to be an isomeric modification of the porphyrin ring. The hémin molecule has essentially the same nucleus, but different side chains.

近年来，通过在π-共轭多环芳烃（PAHs）中引入杂原子（如 B、N、O、S、Se ...

The night sky offers us a variety of spectacles throughout the year, but for the remainder of the month, we have front-row seats to see—not one or two—but seven planets at once.

Of the resin acids, about 90% are isomeric with abietic acid; the other 10% are mixtures of dihydroabietic acid and dehydroabietic acid.