Search results for nanograms

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. ...

Bio & Medicine Sep 1, 2014

Intricate algae produce low-cost biosensors

(Phys.org) —Oregon State University researchers are combining diatoms, a type of single-celled photosynthetic algae, with nanoparticles to create a sensor capable of detecting miniscule amounts of protein or other biomarkers.

Ecology Aug 6, 2014

Fipronil and imidacloprid reduce honeybee mitochondrial activity

New research published in Environmental Toxicology and Chemistry addresses the effects of two broad-spectrum systemic insecticides, fipornil and imidacloprid, on honeybees. These insecticides are widely used in agriculture, ...

Environment Jul 29, 2014

The five most poisonous substances

With the announcement of an inquiry into the murder of Alexander Litvinenko, talk of poisons is back in the news. There are many articles with lists of the most poisonous substances, which are often gathered based on their ...

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