US air bag regulations were changed in 1997 to allow tests of unbelted male dummies in vehicles mounted and accelerated on sleds, resulting in longer crash pulses than rigid-barrier crashes. This change facilitated depowering of frontal air bags and was intended to reduce air bag-induced deaths. Controversy ensued as to whether sled-certified air bags could increase adult fatality risk. A match...

Studies related to the effects of ambient temperature on performance an air conditioning unit have been carried out for decades. However, specific study concerning effect varied under constant relative humidity has not reported yet. This paper discusses operating conditions and conditioner with R32 nominal capacity 2.6 kW. The test was in a controlled psychrometric chamber 50% outdoor from 24 3...

Abstract In the context of rising prices energy and especially natural gas, interest in heat pumps has grown steadily over last period, as they are a very convenient alternative to low medium power thermal plants. Although price dropped lot recently, these systems still expensive compared wall-mounted gas fuelled plants found vast majority residential buildings Romania. this context, authors pr...

The purpose of this study was to compare environmental conditions and mice in cages with four different mechanical ventilation designs and a static isolator cage. Environmental conditions (air velocity, temperature, relative humidity, bedding weight change, airborne dust, NH3, and CO2) were compared for each cage type (n = 5 per cage). Bedding type was chipped hardwood. Mouse response in each c...