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spec: What is the negative side of decriminalizing drugs ? These systems create challenges in the area of energy efficiency , indoor air quality and thermal comfort . Vehicle traffic near HVAC system air intakes can add carbon monoxide and other contaminants to the indoor air . Many mechanical contractors ( nonengineers ) are helpful in implementing changes to air-handling equipment , but may not have the mechanical engineering background required to design effective solutions.Architects : Architects are in a position to understand how building design can affect indoor air quality . A literature review reveals no statistically significant difference between success rates of 1-stage versus 2-stage Fowler-Stephens orchidopexies . This seminar provides insight into the indoor air quality and energy impacts of residential ventilation through recent research and practice . Once the 26 % calf starter was used up , the 15 % dairy ration was the only commercial source of protein for lactating cattle and dairy calves on the farm of origin . As a consequence , drier-than-average conditions were observed over Indonesia and portions of Southeast Asia / India during the month ( Fig. 2 ) . I have adjusted all my fonts within the OSX `` Fontbook '' , and all is well ...