Abstract: Western Kansas is underlain by the Ogallala aquifer that produces water of good quality. Many large‐capacity wells have been drilled for irrigation, industrial, and municipal use. Ground‐water withdrawals exceed recharge ...

Abstract: Chlorine is often added to activated sludge to cure filamentous activated sludge bulking. Filamentous bacteria must be killed while flocforming bacteria survive during chlorination of activated sludge to cure bulking. The ...

Abstract: We have achieved a 50,000 ± 3,000 times concentration of sunlight using a unique dielectric nonimaging concentrator in an experiment performed at the National Renewable Energy Laboratory. ...