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| Chemistry articles |
Chemical tests of cell growth enter third dimension
Ohio State University researchers have developed two new technologies for measuring cell growth in the laboratory.
Safer suntants through science
An organic compound that creates a realistic beachy glow while inducing a natural sun block effect in your skin may be just around the corner, as scientists at the University of Kentucky are testing a treatment that enhances melanin production in animal models.
Explaining the methane mystery
Scientists have explained why atmospheric levels of the greenhouse gas methane have stabilised in recent years, but warn that increases could resume in the near future.
Improbable buckegg hatched
An egg-shaped fullerene, or "buckyball egg" has been made and characterized by chemists at UC Davis, Virginia Tech and Emory and Henry College, Va. The unexpected discovery opens new possibilities for structures for fullerenes, which could have a wide range of uses.
Killing bugs without methyl bromide
A new method for ridding harvested fruits and vegetables of insect pests and microorganisms, without the use of ozone-depleting chemicals such as methyl bromide, has been developed by researchers at UC Davis.
Researchers find why ultramarine blue fades
The 20-year restoration of Michelangelo's frescoes on the ceiling of the Sistine Chapel has left visitors in awe of the work's original majesty--notably the brilliance of the blue that graces the Last Judgment's sky. Recent investigations into this shade of blue--ultramarine blue--have brought to light the pigment's tendency to fade. Is it possible that the longevity of such a masterpiece as the Last Judgment could be in peril?
Investigator seeks to uncover roots of dna's 'sweet' secret
DNA's simple and elegant structure — the "twisted ladder," with sugar-phosphate chains making up the "rails" and oxygen- and nitrogen-containing chemical "rungs" tenuously uniting the two halves — seems to be the work of an accomplished sculptor.
Less expensive fuel cell may be possible
Scientists at Los Alamos National Laboratory have developed a new class of hydrogen fuel-cell catalysts that exhibit promising activity and stability. The catalysts are made of low-cost nonprecious metals entrapped in something called a heteroatomic-polymer structure, instead of platinum materials typically used in fuel cells.
In high resolution, images show how life's chemistry organizes in cells
What's the difference between a lifeless sack of chemicals and a living cell? It's all in the way they're organized, according to Stanford biophysical chemist Steven Boxer.
Zinc may play prominent role in fear response and other learned behavior
The metal zinc released in the brain's amygdala region has been linked to the ability to generate the learned fear response, researchers at Harvard-affiliated McLean Hospital are reporting. The finding could help in understanding more about zinc intake, its importance in the daily diet and its role in memory.
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Knotty problem puzzles protein researchers
A surprising new University of Colorado at Boulder study indicates winds circling high above the far Northern Hemisphere have a much greater impact on upper stratospheric ozone levels than scientists had thought.
Polarized particles join toolbox for building unique structures
Researchers at the University of Illinois at Urbana-Champaign have created polarized, spherical particles that spontaneously self-assemble into clusters with specific shapes and distributions of electric charge. The polarized particles can be used in the directional self-assembly of intricate shapes and unique structures.
Researchers find controls to gold nanocatalysis
Researchers at the Georgia Institute of Technology have made a discovery that could allow scientists to exercise more control over the catalytic activity of gold nanoclusters.
Physicists discover new way to visualize shape changes in molecules
Using ultrafast lasers, a team of University of Colorado at Boulder and JILA scientists has developed a novel method to observe the motion of atoms during chemical reactions, opening up new possibilities for detailed understanding of how chemical bonds are made and broken.
Mimicking nature creates self-cleaning coatings
Researchers at the Georgia Institute of Technology are mimicking one of Nature's best non-stick surfaces to help create more reliable electric transmission systems, photovoltaic arrays that retain their efficiency, MEMS structures unaffected by water and improved biocompatible surfaces able to prevent cells from adhering to implanted medical devices.
A boost for solar cells with photon fusion
Researchers at the Max Planck Institute for Polymer Research in Mainz have developed a process with which longwave light from a normal light source can be converted to shortwave light.
Scientists convert modern enzyme into its hypothesized ancestor
By making a single substitution in the amino acid sequence of a modern enzyme, scientists have changed its function into that of a theoretical distant ancestor, providing the first experimental evidence for the common origin of the two distinct enzyme types.
Alloy of hydrogen and oxygen made from water
Water, the only indispensable ingredient of life, is just about the most versatile stuff on Earth. Depending on its temperature we can heat our homes with it, bathe in it, and even strap on skates and glide across it, to name only the most common of its many forms. When subjected to high pressures, however, water can take any of more than 15 different forms.
Engineers probe spiders' polymer art
A team of MIT engineers has identified two key physical processes that lend spider silk its unrivaled strength and durability, bringing closer to reality the long-sought goal of spinning artificial spider silk.
Modeling the formation of blood clots
Good science requires great patience. In many fields, ideas and theories surge ahead while the tools to test them can take decades to catch up. When Peter Richardson began talking with colleagues who were modeling blood flow through the vessels on the heart's surface, he hardly suspected that the collaboration would lead to a test of ideas he had proposed more than 30 years before.
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| Quotes | By convention!
cussed Tom airily.
Cmon Scully... Itll be a nice trip through the woods-Fox Mulder
But what ... is it good for?
Engineer at IBM, 1968, commenting on the microchip.
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