Search results for nanograms

Analytical Chemistry May 27, 2015

Biosensor may improve clinical diagnosis of influenza A

Sensors based on special sound waves known as surface acoustic waves (SAWs) are capable of detecting tiny amounts of antigens of Influenza A viruses. Developed by A*STAR researchers, the biosensors have the potential to detect ...

Plants & Animals Apr 1, 2015

Agricultural contaminant impacts fish reproductive behaviour

A common growth-promoting hormone used worldwide in the cattle industry has been found to affect the sexual behaviours of fish at a very low concentration in waterways – with potentially serious ecological and evolutionary ...

Biochemistry Mar 16, 2015

Toward better prediction of the effects of substances at very low doses

A public and scientific discussion is currently taking place focusing on the question whether substances at low concentrations may lead to health impairments in humans. For this reason, an increasing number of experimental ...

Bio & Medicine Jan 27, 2015

Stomach acid-powered micromotors get their first test in a living animal

Researchers at the University of California, San Diego have shown that a micromotor fueled by stomach acid can take a bubble-powered ride inside a mouse. These tiny motors, each about one-fifth the width of a human hair, ...

Environment Jan 16, 2015

Study: Diabetes drug affecting fish in Lake Michigan

Researchers have found that pharmaceuticals and personal-care byproducts persist at low levels miles from sewage discharge pipes in Lake Michigan. And a study from the University of Wisconsin-Milwaukee shows that the most ...

Bio & Medicine Jan 14, 2015

A speedy test for bladder cancer

A fast and accurate urine test for bladder cancer developed by A*STAR researchers has the potential to replace the currently used invasive physical probe.

Earth Sciences Jan 8, 2015

Epic survey finds regional patterns of soot and dirt on North American snow

Snow is not as white as it looks. Mixed in with the reflective flakes are tiny, dark particles of pollution. University of Washington scientists recently published the first large-scale survey of impurities in North American ...

Earth Sciences Nov 3, 2014

When thawing glaciers release pollutants

As glaciers increasingly melt in the wake of climate change, it is not only the landscape that is affected. Thawing glaciers also release many industrial pollutants stored in the ice into the environment. Now, within the ...

Analytical Chemistry Oct 15, 2014

Biological sample prep time cut from days to minutes

When Lawrence Livermore National Laboratory researchers invented the field of biological accelerator mass spectrometry (AMS) in the late 1980s, the process of preparing the samples was time-consuming and cumbersome.

Other Sep 3, 2014

Lead and cadmium found in some chocolate bought in Brazil

Scientists have found that commercial samples of chocolate purchased in Brazil contain varying levels of lead and cadmium, which can cause health problems, and that those levels are linked to how much cocoa a product contains. ...

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