Diffusion in condensed phases, especially in natural systems such as solutions, geochemical melts and solid–solid interfaces, is an important process that remains poorly understood at a quantitative ...

Diffusion is the movement of particles from a region where they are in high concentration to a region where they are in low concentration, and is one of the ways substances can move across the cell ...

Biophysicists at Ludwig-Maximilians-Universitaet (LMU) in Munch have developed a new theory, which accounts for the observation that cells can perceive their own shapes, and use this information to ...

Scientists from National Taiwan University and the National Institutes of Applied Research of Taiwan have developed a rapid ...

Animals, including humans, need to absorb all glucose molecules from their food. This is taken from the gut wall, inside the small intestine, into the blood. There is more glucose (a higher ...

·The supply of hydrogen ions will also depend upon their concentration, i.e. the pH of the electrolyte. A concentration gradient in the electrolyte is illustrated. ·If the electrolyte is unstirred, ...

The surface flux of nitric oxide from a wheat field was investigated from 23 March to 29 May 1997 in the Kerzersmoos, Switzerland. A plot fertilised with 19 kg N ha⁻¹ in cattle slurry and 40 kg N ha⁻¹ ...