the major sources of pahs are anthropogenic. these may be generated by pyrolytic and petrogenic processes. low molecular weight pahs come into the aquatic system through the accidentally leakage of oil spills. incomplete combustion at high temperature will release high molecular weight pahs by products of pyrolytic processes. the methods for assigning sources of pahs include paired isomeric rat...

Learning Problem Solving Methods in order to Reduce Stress and Anxiety, and Increase Achievement Motivation T. Aboutalebi Ahmadi Learning to solve problems can help reduce anxiety and stress on the one hand, and increase chances of success, on the other. A sample of 78 freshmen at a teacher training college was randomly selected from among 156, and then divided into two groups of ...

frequent interaction among family members, may lead to conflict or problems. therefore, designing intervention programs for promote interpersonal skills among family members seemed to be necessary. one of these programs is problem solving strategies teaching.  this study aime to investigate the effects of teaching problem solving on parenting style and family problem solving. the sample is cons...

OBJECTIVE To provide community-based information on the prevalence of diabetes, hypertension and heart disease and to highlight their significant correlates. MATERIALS AND METHODS Data were collected in a cross-sectional household survey of 2,487 Kuwaiti nationals aged 50 and over in 2005/2006. A proportionately representative sample of 1,451 respondents from a relatively more urban area (Cap...

In this work, we address competition among autonomous cognitive radios (CRs) which are competing for frequency bands, and model their interactions. We design auction mechanisms with and without an entry fee and define utility functions based on the total achieved capacity per unit price. We equip the CRs with a learning algorithm in order to bid more efficiently. Our considered network consists...

Primary malignant melanoma of the esophagus is an extremely rare disease with non-specific clinical presentations and radiological findings. We are presenting a case of 40 years old female admitted to the hospital complaining of dysphasia and weight loss. Esophagoscopy revealed an irregular fungating mass at the lower one third of the esophagus. The tumor was diagnosed provisionally as poorly d...