The article considers design options for light-aeration lamps used in “cold” barns. Calculations were made of volumetric airflow rates through an open-type ridge at different heights inlet openings, the results which are presented article.
 Keywords: aeration; barn; natural ventilation; microclimate; air exchange.

Reinforced polymer composites have played an ascendant role in a variety of applications for their high meticulous strength and modulus the fiber may be synthetic or natural used to serves as reinforcement in reinforced composites. Glass and other synthetic fiber reinforced composites consists high meticulous strength but their fields of applications are restrained because of their high cost of...

recently, due to the very good market in ethane as a feedstock for petrochemical complexes, thereare some plans to make a deep ethane recovery from the gases produced in iran southern fields. inthis work, the feasibility of different technologies for deep ethane recovery from a specified feed gasproduced in one of the iran southern fields is reviewed. three different processes are selected ands...