The ability to «set aside» other concerns and problems temporarily and remain totally present and apply one - hundred percent concentration when teaching. (educationworld.com)
We recommend using powders diluted to fifty percent concentration for young puppies and kittens. (safarivet.com)
Company fuel cells have a naturally high concentration of CO2 in their fuel stream — about 75 percent concentration of CO2, compared to 10 percent or so from a typical coal plant emissions stream. (scientificamerican.com)