News tagged with concentration

A layer of cool, healthy air

Stratum ventilation systems have been touted as a much more energy efficient system for cooling buildings such as school rooms and offices in hotter climes based on the provisions of the recent ANSI/ASHRAE 55-2010. They may ...

Dec 17, 2012 4 / 5 (1) 0

USDA patents method to reduce ammonia emissions

Capturing and recycling ammonia from livestock waste is possible using a process developed by U.S. Department of Agriculture (USDA) researchers. This invention could help streamline on-farm nitrogen management ...

Nov 01, 2012 not rated yet 0