Midterm congressional elections provide an interesting testing ground for theories of voting and elections in America. Free from the contamination of national personalities and stylized issues that epitomize presidential campaigns, midterm elections provide a cleaner issue environment for investigating the effects of systematic short-term forces on congressional elections. The seemingly inevita...

A polychaete-assisted sand filter (PASF) can aid water recirculation systems for shrimp culture ponds by removing large amounts of nutrients and suspended solids chemically treating wastewater. By ingesting degrading organic matter, Perinereis helleri polychaetes reared in a PASF accumulate potentially remove infectious hypodermal hematopoietic necrosis virus (IHHNV) present wastewater from rea...

introduction: wastewater treatment plants are important hotspots for the spread of  antibiotic resistance genes to the environment.  the aim of this study identification of relevant antibiotic resistance genes  in raw  and final effluent of municipal wastewater treatment and also determination of effects of different wastewater treatment process on removal/reduction of these pollutants. materia...

Different from Europe, where continuous flow activated sludge plants are the first choice for domestic wastewater treatment, specific Latin American conditions promote alternative technical solutions. In many locations wastewater temperatures are relatively high, land is available and areas pestered with energy shortages abound. Moreover, there is little specialised mechanical equipment for was...