A polymer is a mesh of chains, which slowly break over time due to the pressure from ordinary wear and tear. When a polymer is squeezed, the pressure breaks chemical bonds and produces free radicals: ions with unpaired electrons, ...
Polymers
Mar 2, 2012
2
0
Truth shines a light into dark places. But sometimes to find that truth in the first place, it's better to stay in the dark. That's what recent findings at the National Institute of Standards and Technology (NIST) show about ...
Bio & Medicine
Nov 19, 2014
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Many of the processes that keep us alive also put us at risk. The energy-producing chemical reactions in our cells, for example, also produce free radicals—unstable molecules that steal electrons from other molecules. When ...
Cell & Microbiology
Nov 4, 2021
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555
In experiments mimicking a natural environment, Duke University researchers have demonstrated that the silver nanoparticles used in many consumer products can have an adverse effect on plants and microorganisms.
Bio & Medicine
Feb 27, 2013
4
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Naturally-derived anti-oxidants have become the 'it' health ingredient to look for in food. But researchers from UBC Okanagan and the University of Bologna have discovered that TEMPO—a well-known artificial anti-oxidant—is ...
Materials Science
Sep 11, 2018
1
106
Oxygen-consuming organisms obtain energy through cellular respiration, which is the transformation of carbohydrates and oxygen into carbon dioxide and water. This process also produces toxic oxygen radicals which must be ...
Cell & Microbiology
Sep 7, 2011
0
0
Getting help with baby care could keep families healthier and extend their lives, according to a new study into bird behaviour.
Plants & Animals
Nov 17, 2015
0
380
A potential new treatment for traumatic brain injury (TBI), which affects thousands of soldiers, auto accident victims, athletes and others each year, has shown promise in laboratory research, scientists are reporting. TBI ...
Bio & Medicine
Oct 17, 2012
1
0
Researchers at ICIQ in Tarragona have developed a simple technique to produce microscopic crystals that activate in the presence of light, releasing silver ions with antimicrobial activity.
Bio & Medicine
Apr 17, 2024
0
58
Despite its fundamental role in biology and extensive studies over half a century, many aspects of how DNA's building blocks are formed remain unclear. Now, an international team of scientists has revealed valuable details ...
Biochemistry
Oct 12, 2023
0
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