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Caffeine (1,3,7-trimethylxanthine) is the alkaloid most present in green and roasted coffee beans. The content of caffeine is between 1.0% and 2.5% by weight of dry green coffee beans. The content of caffeine does not change during maturation of green coffee beans, but higher caffeine content is found in plants grown at higher altitudes.
Caffeine is a central nervous system (CNS) stimulant of the methylxanthine class. [ 9] It is mainly used as a eugeroic ( wakefulness promoter) or as a mild cognitive enhancer to increase alertness and attentional performance. [ 10][ 11] Caffeine acts by blocking binding of adenosine to the adenosine A 1 receptor, which enhances release of the ...
A prime number (or a prime) is a natural number greater than 1 that is not a product of two smaller natural numbers. A natural number greater than 1 that is not prime is called a composite number. For example, 5 is prime because the only ways of writing it as a product, 1 × 5 or 5 × 1, involve 5 itself. However, 4 is composite because it is a ...
July 19, 2024 at 5:09 AM. A local news reporter is going viral after a blooper she posted caught the attention of the internet. Teagan Brown, a weekend sports anchor and reporter at Myrtle Beach ...
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Mark Elliot Zuckerberg ( / ˈzʌkərbɜːrɡ /; born May 14, 1984) is an American businessman. He co-founded the social media service Facebook and its parent company Meta Platforms (formerly Facebook, Inc.), of which he is chairman, chief executive officer and controlling shareholder. Zuckerberg has been the subject of multiple lawsuits ...
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