We collected 20 explicit and stable numerical algorithms for the one-dimensional transient diffusion equation analytically examined their consistency convergence properties. Most of methods used have been constructed recently truncation errors are given in this paper first time. The contain ratio time space steps; thus, conditionally consistent. performed six tests to compare performance try ex...

Abstract Recently, great effort has been devoted to prepare various reinforce fillers improve polymer performances, but ignoring the importance of raw powders which are indispensable parts hot-pressed composites. Herein, we engineer polyimide (PI) with assistance polydopamine (PDA) in aqueous solutions. After modification, change from hydrophobic hydrophilic, makes it is possible further modifi...

Introduction: Substance use disorder is one of the most critical social problems in Iran. For this disorder, weneed a proper assessment tool based on our indigenous culture. Objective: This study assesses factor structure and psychometric properties 10-item 20-item Persian versions Drug Abuse Screening Tests (DAST-10 DAST-20). Materials Methods: In cross-sectional study, we randomly selected 20...

Two papers in the Journal this week focus on the potential impact of cannabis use on mental health outcomes. Di Forti et al (pp. 488–491) examined the risk of psychosis associated with use of high-potency cannabis. They found that individuals presenting with a first episode of psychosis were no more likely than local population controls to have ever taken cannabis but the former were more likel...