News tagged with concentration

A docking site per calcium channel cluster

A study co-led by Ryuichi Shigemoto and Alain Marty concludes that a single docking site may use a single cluster of calcium channels, and that both the number of docking sites and the number of calcium clusters change in ...

Jun 14, 2017
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Geophagy—eating soil could harm babies

Up to 80 percent of people in Africa, especially women, regularly eat clayey soil – this habit is known as geophagy. A previous study conducted at MedUni Vienna has already shown that it is a form of craving. Now researchers ...

Apr 25, 2017
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Inactive lifestyle linked to ozone-related lung

An inactive lifestyle may increase the risk of environmentally induced asthma symptoms. In a new study published in the American Journal of Physiology—Lung Cellular and Molecular Physiology, U.S. Environmental Protection ...

Dec 07, 2016
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Concentration

In chemistry, concentration is defined as the abundance of a constituent divided by the total volume of a mixture. Four types can be distinguished: mass concentration, molar concentration, number concentration, and volume concentration. The term concentration can be applied to any kind of chemical mixture, but most frequently it refers to solutes in homogeneous solutions.

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