considerable investments have been made in establishing wastewater treatment plants (wwtps). however, evaluation of the performance of plants during recent years, when more wwtps have become operational, shows that effluent quality criteria were not met in many instances. preliminary assessment of the operational problems of wwtps in iran disclosed that numerous factors affect this issue of eff...

Considerable investments have been made in establishing wastewater treatment plants (WWTPs). However, evaluation of the performance of plants during recent years, when more WWTPs have become operational, shows that effluent quality criteria were not met in many instances. Preliminary assessment of the operational problems of WWTPs in Iran disclosed that numerous factors affect this issue of eff...

From the available evidence, alsohol ingestion per se does not appear to be carcinogenic. While alcoholism constitutes a major and serious social problem, it is not clear to what extent it constitutes a major health problem. We suggest that excessive alcohol ingestion coupled with a nutritional deficiency or some other insult (e.g., smoking) may be carcinogenic. Alcohol and/or several nutrition...

Poor school performance has historically been one of the strongest and most consistent predictors of delinquency and criminality. Conversely, improvements in school performance have more recently been associated with desistance from delinquent and criminal activity. As a result, criminological and educational research suggests a strong link between education and crime. This chapter assesses the...