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...

Diethylaminodifluorosulfinium tetrafluoroborate (XtalFluor-E) and morpholinodifluorosulfinium tetrafluoroborate (XtalFluor-M) are crystalline fluorinating agents that are more easily handled and significantly more stable than Deoxo-Fluor, DAST, and their analogues. These reagents can be prepared in a safer and more cost-efficient manner by avoiding the laborious and hazardous distillation of di...

We generated the second harmonics of pulses in the far-infrared region (30-55 microm), using the organic salt dimethylamino-4-N-methylstilbazolium tosylate (DAST). We demonstrate that DAST can be used to characterize ultrashort pulses in a spectral region where no other materials are available. To illustrate the need for such characterizations, we show the effects of propagation through air on ...

The purpose of this study was to assess children’s images of scientists by using the Draw-A-Scientist Test and to determine if differences in these images exist between grade levels. The DAST was administered to 243 children who were enrolled in kindergarten (aged 6) and grade 3 and 5 (aged 9 and 11). Findings obtained from the study revealed that, in general, children possess stereotypical vie...

BACKGROUND This study aimed to investigate the validity and reliability of the Mandarin Chinese version of the Drug Abuse Screening Test (DAST-20) among adolescents, as well as examining the test's predictability with regard to the actual level of drug abuse. METHOD A total of 100 adolescent participants were recruited with their consent, in which 49 were current drug users and 51 were non-us...

Aminodifluorosulfinium tetrafluoroborate salts were found to act as efficient deoxofluorinating reagents when promoted by an exogenous fluoride source and, in most cases, exhibited greater selectivity by providing less elimination byproduct as compared to DAST and Deoxo-Fluor. Aminodifluorosulfinium tetrafluoroborates are easy handled crystalline salts that show enhanced thermal stability over ...

In this paper, a 4-N,N-dimethylamino-4?-N?-methyl-stilbazolium tosylate (DAST) material assisted one-dimensional photonic-crystal-based (1D-PhC) tunable optical filter is presented. The design comprises bilayer 1D-PhC structure having DAST as an electro-optic material. device parameters are configured to out the 632.8 nm wavelength from reflection spectrum. analysis shows that by illuminating w...

In order to improve the efficiency and quality of software development, automatic code generation technology is current focus. The generated by also an important issue. However, existing metrics for ignore that programming process a continuous dynamic changeable process. So metric This article proposes method based on abstract syntax tree (DAST). More specifically, first builds DAST through int...

This paper presents the performance of carrier Frequency offset estimation algorithm for golden encoded MIMO OFDM system. Basically Algebraic Space Time Code (ASTC) has three major encoding methods they are Golden, TAST and DAST encoding. But Golden encoder provides an efficient performance while compared with the TAST and DAST. Carrier frequency offset estimated for Golden code multiple input ...