News tagged with concentration

Drainage ditches can help clean up field runoff

Vegetated drainage ditches can help capture pesticide and nutrient loads in field runoff, U.S. Department of Agriculture (USDA) scientists report. These ditches—as common in the country as the fields they ...

Jan 04, 2013
5 / 5 (2) 0

Tracing nitrate in watersheds

Plants need nitrogen to grow, and nitrate is a common fertilizer ingredient, but high levels of nitrate contamination in drinking water sources can cause health problems. It is generally known that nitrogen flows through ...

Mar 15, 2013
5 / 5 (2) 0

A step closer to composite-based electronics

Composite materials are of increasing interest to physicists. Typically, they are made of electrically conducting elements - such as spherical metallic or elongated carbon particles - embedded in an insulating ...

Nov 25, 2013
5 / 5 (2) 1 | with audio podcast

First 3-D movies of living sperm

To improve their chances of success, in vitro fertilization (IVF) clinics need to assess the viability of the sperm they use. Now doctors may soon have a new technique to help them sort the good sperm cells ...

Feb 11, 2014
5 / 5 (2) 0 | with audio podcast

New molecule enables quick drug monitoring

Monitoring the drug concentration in patients is critical for effective treatment, especially in cases of cancer, heart disease, epilepsy and immunosuppression after organ transplants. However, current methods are expensive, ...

Jun 08, 2014
5 / 5 (2) 0