Medications

Fridge-sized machine makes prescription drugs 'on demand'

(HealthDay)—Scientists have created a compact machine that can churn out thousands of doses of prescription medication in a day—putting the capabilities of a drug-manufacturing plant into a device the size of a kitchen ...

Health

Juul users are inhaling chemicals not listed on the label

When it comes to e-cigarettes, the ingredients listed are not all that users are consuming. Yale researchers found that chemical reactions in flavored liquids of the popular Juul e-cigarette create unexpected chemicals that ...

Neuroscience

Researchers discover the key to long-term memory

After a 30-year quest, a Brandeis professor has discovered the molecule that stores long-term memories—it's called calcium/calmodulin dependent protein kinase, or CaMKII for short. The results were published on September ...

Health

The risks and benefits of tanning

Eighty years ago, when sun exposure was first associated with skin cancer, popular culture was exalting tanning by emphasizing that a "fine brown color suggests health and good times, and is a pleasant thing to see."

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Chemical reaction

A chemical reaction is a process that always results in the interconversion of chemical substances. The substance or substances initially involved in a chemical reaction are called reactants. Chemical reactions are usually characterized by a chemical change, and they yield one or more products, which usually have properties different from the reactants. Classically, chemical reactions encompass changes that strictly involve the motion of electrons in the forming and breaking of chemical bonds, although the general concept of a chemical reaction, in particular the notion of a chemical equation, is applicable to transformations of elementary particles, as well as nuclear reactions. Different chemical reactions are used in combination in chemical synthesis in order to get a desired product. In biochemistry, series of chemical reactions catalyzed by enzymes form metabolic pathways, by which syntheses and decompositions ordinarily impossible in conditions within a cell are performed.

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