M i s h e l & R o t h s t e i n , e d i t o r s In The Class Size Debate, two eminent economists debate the merits of smaller class sizes and the research methods used to measure the efficacy of this education reform measure. Alan Krueger (Princeton University) maintains that smaller class sizes can improve students’ performance and future earnings prospects. He challenges Prof. Hanushek’s wi...

The objective of this work was to apply a hybrid process, including electrodialysis reversal (EDR) and reverse osmosis (RO) to the treatment of petrochemical wastewater in order to obtain process water for reuse. A water balance was carried out to defne the main water consumers and the process step that could receive the produced water. Additionally, toxicity assays wer...