Robert Kelly is managing director of XTS Energy LLC, and has more than three decades of experience as a business executive. He is a professor of economics and has raised more than $4.5 billion in ...

The perpetual inventory system has several advantages over a periodic system for businesses of all sizes. In a business using the periodic inventory method, purchases are recorded throughout the year ...

Chemists still use the table that groups elements according to their properties most days in their work. The periodic system for elements will turn 150 this year. In 1869, the Russian chemist Dmitri ...

Thanks to sophisticated software systems that even small businesses can use, more companies are moving toward the perpetual inventory system, which keeps real-time track of product levels. The ...

Eric Scerri's delightful "The Periodic Table: Its Story and Its Significance" follows the 1969 classic by J. W. Spronsen, "The Periodic System of Chemical Elements," but is a different treatment of ...

The periodic table of chemical elements hangs in front of chemistry classrooms worldwide and is an icon for science. Yet much was unknown about its history -- until now. The periodic table reflects ...

In a recently published article in the "Proceedings of the National Academy of Sciences" (PNAS), the scientists look back to the beginnings of the periodic system, whose structure is characterized by ...

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Everybody remembers trying to learn the periodic table in science lessons at school. The table is one of the fundamental building blocks of chemistry, explaining the relationship between different ...

(Nanowerk Spotlight) The Periodic Table of Chemical Elements is one of the most significant achievements in science, capturing the essence not only of chemistry, but also of physics, medicine, earth ...