资讯

Studies on the NMR methodology for characterizing the structure of polymers and biopolymers based on the understanding of the NMR chemical shift/structure correlation using solution-state and ...
Some research suggests that combining caffeine and cannabis may produce different effects than taking them separately. There may also be some risks. Some products already mix caffeine with two key ...
While black tea, espresso, and coffee bring the most caffeine to the table, green tea packs a moderate amount as well. The content in white teas varies greatly, while herbal teas are practically ...
The caffeine in your average 12-ounce cola rivals the amount in a cup of tea: 42 and 47 milligrams, respectively. But getting your caffeine fix this way can add up to 140 calories a can, ...
caffeine metabolism: isoleucine ... NMR-based metabolite profiling of urine is a fast and reproducible method for detection of numerous metabolites with diverse chem. properties. However, signal ...
Likewise, black tea tells a similar story, with a regular cup of the stuff giving you between 5 and 7.5 milligrams of caffeine per ounce — much less than either coffee or Jameson Cold Brew.
In healthy people, the half-life of caffeine is about five hours, meaning it will take you around five hours, on average, to clear out 50% of the caffeine you consumed from your body.
In a study published in April in Nature Communications Biology, a team of researchers from Universite de Montreal shed new light on how caffeine can modify sleep and influence the brain's recovery ...
Caffeine doesn’t just make it harder to fall asleep; it changes how the brain behaves during rest. New research shows that caffeine alters brain activity in ways that make sleep look more like ...
Caffeine Tolerance. Over time, your body can build up a tolerance to caffeine, making it less effective. This may happen more frequently than you think, and if you are a habitual coffee drinker, ...