نتایج جستجو برای: organic substance 22
تعداد نتایج: 598704 فیلتر نتایج به سال:
A previous report suggested that successful cognitive behavioral therapy (CBT) for child anxiety reduced substance use problems at 7.4-year follow-up, but that report did not include predictors of: (a) substance use disorder (SUD; e.g., attention deficit-hyperactivity disorder symptoms, negative life events, family substance abuse, additional treatment), or (b) treatment outcome (e.g., severity...
This paper reports on changes in substance use and substance dependence symptoms-without intervention-among young adult multidrug users in the club scene, ages 18-29, (N = 444) who participated in a natural history study. Computer-assisted personal interviews at baseline and 6-, 12-, and 18-month follow-ups included well-tested measures of substance use and dependence. Changes in substance depe...
PURPOSE An earlier randomized controlled study found that a universal, family-focused preventive intervention produced protective shield effects-reduced adolescent exposures to illicit substance opportunities-among adolescents in grade 12. This study examined a follow-up assessment of the sample during young adulthood. METHODS A randomized controlled trial evaluated the Iowa Strengthening Fam...
An antiviral substance was found in extracts of chlorella cells which inactivates arboviruses as well as vesicular stomatitis virus (VSV). Partial characterization of the active component revealed that it is a substance soluble in a number of organic solvents and appears to act photodynamically on the viruses. Cells of Chlorella ellipsoidae, cultured heterotrophically in a tank, were harvested ...
Novel quinoxaline-based organic sensitizers using vertical (RC-21) and horizontal (RC-22) conjugation between an electron-donating triphenylamine unit and electron-accepting quinoxaline unit have been synthesized and used for dye-sensitized solar cells (DSSCs), leading to the relatively high power conversion efficiencies of 3.30 and 5.56% for RC-21 and RC-22, respectively. This result indicates...
This study examined the chemical composition of A. blasiliensis and the chemical structural properties of an immuno-stimulating polysaccharide. The amino acids, free sugars, and organic acids by HPLC and fatty acids by GC were analyzed. The immuno-stimulating substance from A. blasiliensis was extracted with hot water and purified by ethanol precipitation. It underwent ion exchange chromatograp...
background: xylene is known as one of the most toxic of the nervous system. the purpose of this study is to estimate the concentration of xylene in the cabin of the vehicles production in iran. also the effect of ventilation, cigarette smoking, and air freshener inside the vehicle, fuel type and car decorations on the concentration of the substance being studied. methods: 152 vehicles pride a...
BACKGROUND Substance use often begins in adolescence. We did a study to describe substance use and its associated factors among adolescent students in Imphal. METHODS We defined substance use as the use of licit and illicit substance other than when medically indicated. Using a WHO self-administered questionnaire, we collected Information about substance use from 61 randomly selected students...
The antiparasitic activity of certain indigenous plant extracts was tested against the model bovine filarial parasite Setaria digitata. Among the plants tested, the extracts of Strebulus asper was found to be most effective. The chloroform and other phase of the organic solvents showed most activity indicating that the active compound may be a non polar substance having low molecular weight.
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