In this study the relationship between choosing appropriate descriptors by genetic algorithm to the Polarizability (POL), Molar Refractivity (MR) and Octanol/water Partition Coefficient (LogP) of barbiturates is studied. The chemical structures of the molecules were optimized using ab initio 6-31G basis set method and Polak-Ribiere algorithm with conjugated gradient within HyperChem 8.0 environ...

Emissions data for PM10 and NH3 from commercial broiler houses in central Texas were analyzed using multiple linear regressions to develop emission factors for average bird weights and interior building temperatures. The emission factor for PM10 was 318 mg PM10 bird and the emission factor for NH3 was 19.8 g NH3 bird. These results were compared to published values found in the literature. Unde...