Robotics

No assembly required: Researchers automate microrobotic designs

Assembling a microrobot used to require a pair of needle-nosed tweezers, a microscope, steady hands and at least eight hours. But now University of Toronto Engineering researchers have developed a method that requires only ...

Computer Sciences

Could blockchain ensure integrity of clinical trial data?

UC San Francisco researchers have created a proof-of-concept method for ensuring the integrity of clinical trials data with blockchain. The system creates an immutable audit trail that makes it easy to spot any tampering ...

Computer Sciences

Can we trust scientific discoveries made using machine learning?

Rice University statistician Genevera Allen says scientists must keep questioning the accuracy and reproducibility of scientific discoveries made by machine-learning techniques until researchers develop new computational ...

Robotics

Biobot made of heart cells and gel looks like fluttering butterfly

A team of researchers at Southeast University in Nanjing, China, has developed a heart-on-a-chip platform incorporating rat heart muscle cells, hydrogel and nanocrystals. In their paper published in the journal Science Robotics, ...

Engineering

The next pharmaceutical revolution could be 3-D bioprinted

Body organs such as kidneys, livers and hearts are incredibly complex tissues. Each is made up of many different cell types, plus other components that give the organs their structure and allow them to function as we need ...

Hi Tech & Innovation

Bot tech controls drug release when needed

(Tech Xplore)—A study shows that that nanobots can release drugs inside your brain. The nanorobots, reported New Scientist on Thursday, are built out of DNA. Drugs can be tethered to their shell-like shapes.

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Drug

A drug, broadly speaking, is any substance that, when absorbed into the body of a living organism, alters normal bodily function. There is no single, precise definition, as there are different meanings in drug control law, government regulations, medicine, and colloquial usage.

In pharmacology, Dictionary.com defines a drug as "a chemical substance used in the treatment, cure, prevention, or diagnosis of disease or used to otherwise enhance physical or mental well-being." Drugs may be prescribed for a limited duration, or on a regular basis for chronic disorders.

Recreational drugs are chemical substances that affect the central nervous system, such as opioids or hallucinogens. They may be used for perceived beneficial effects on perception, consciousness, personality, and behavior. Some drugs can cause addiction and habituation.

Drugs are usually distinguished from endogenous biochemicals by being introduced from outside the organism.[citation needed] For example, insulin is a hormone that is synthesized in the body; it is called a hormone when it is synthesized by the pancreas inside the body, but if it is introduced into the body from outside, it is called a drug.[citation needed]

Many natural substances such as beers, wines, and some mushrooms, blur the line between food and drugs, as when ingested they affect the functioning of both mind and body.

This text uses material from Wikipedia, licensed under CC BY-SA