The prevalence of migraine in Iran: A systematic review and meta-analysis

Context: Migraine is a major dilemma and problem which affects public health and results to reduced quality of life. This study aimed to determine the prevalence of migraine in Iran. Evidence Acquisition: A systematic search was conducted using Pub Med,Web of Science,Embase,Scopus,Ovid,Google Scholar,as well as Iranian databases including: MagIran,IranMedex and Scientific Information Databank,from 2000 to November,2015. The Der-Simonian/Laird�s random-effects model,with a 95 confidence intervalwasemployed to estimate the overall pooled prevalence. Heterogeneity was investigated using subgroup analysis based on sample size and time of study. Results: Thirty studies comprising 33,873 participants met the inclusion criteria for the analysis. The overall prevalence of migraine in Iran was 14 (95 CI,12 to 17),respectively. The overall prevalence was (8; 95 CI 6 to 11) according to the international classification of headache disorders (ICHD-1),(17; 95 CI 13 to 21) according to ICHD-2,and (18; 95 CI 7 to 30) according to the other questionnaire for migraine screener (ID Migraine),respectively. Meta-regression demonstrated that the prevalence of migraine increased by year of publication and decreased by sample size. Conclusions: The prevalence of migraine in Iran,which was estimated as 14,was similar or even higher than that reported worldwide. Migraine can have impact on the economic productivity of any country; therefore it is necessary to educate people on the early detection and the discovery of an effective treatment of migraine. More thorough review of further studies in this field is recommended. © 2016,Iranian Red Crescent Medical Journal

Studies on the recovery of uranium from nuclear industrial effluent using nanoporous silica adsorbent

In this paper, the sorption of uranium onto nanoporous silica adsorbent in the presence of nitrate, sulfate, chloride, fluoride and phosphate was studied. The effect of contact time between the nanoporous sorbent and aqueous solution, pH and initial concentration of uranium was also investigated. Uranium sorption onto nanoporous silica adsorbent is a very fast process as sorption rate increases with pH increment. Optimum pH for uranium sorption was 4–8. Experimental sorption isotherm is successfully described by Langmuir and Freundlich models. The results obtained by batch experiments showed that the presence of high concentration of nitrate, sulfate, chloride and phosphate anions alone had no interference with uranium recovery. However, the presence of fluoride ions (>250 mg/L) decreases uranium sorption by about 55 %. The results also showed that the presence of phosphate ions (about 300 mg/L) in solution could remove fluoride interference completely. Finally, the efficiency of the nanoporous silica adsorbent for uranium recovery from wastewater of the uranium conversion facility was investigated