Showing 3 results for Farrokhi
A Gholampour , A.r Mesdaghinia , F Vaezi , R Nabizadeh , M Farrokhi , A Ghasri ,
Volume 5, Issue 2 (3 2007)
Abstract
Background and Aim: 2,4-Dichlorophenol (DCP) is a compound generated in a variety of industrial processes and also by chlorine disinfection of water polluted with phenolic compounds . Dumping of DCP into the environment and water resources is of great concern because of the compound's intense odor and toxicity. DCP is very soluble and resistant to biodegradability so it cannot be removed through conventional water and wastewater treatment processes. On the other hand, pollution prevention (P2) strategies have not been able to resolve the problem.
Material and methods: In this study, one of the AOPS named Fenton was used for DCP degradation. The method is based on simultaneous use of hydrogen peroxide and ferrous sulfate.
Results: Results of treatment with hydrogen peroxide and ferrous ion (as Fenton reagent ingredients) indicate that by oxidation of 50 mg/L DCP at 60 minutes contact time with iron concentration kept at 15 mg/L and various concentrations of H2O2 (50 and 100 mg/L), the efficiency of COD(Chemical Oxygen Demand) reduction would go up from 65% to 80% with higher concentrations of H2O2. We also determined the effect of various concentrations of ferrous ion on DCP oxidation rate. The results showed the prominent role of this ion in DCP treatment: increasing Fe concentration from 5 to 15mg/L produced a 60% reduction in COD occurred in 10 and 60 minutes contact times. Another conclusion was that the oxidation of DCP solutions by Fenton had a major effect on biodegradability so that BOD: COD ratios of these solutions increased significantly after this oxidation.
Conclusion: Pretreatment of waste containing dichlorophenol by the Fenton reagent can enhance the biodegradability of this chemical and perhaps of similar compounds in a short time interval.
Hossein Farrokhi, Vahid Mostafapour, Zahra Bondar Kakhki,
Volume 16, Issue 2 (9-2018)
Abstract
Background and Aim: Sleep disorders and insomnia are problems which create many problems for the elderly and imperil their physical and mental health. The present study aimed to investigate the effect of multi-component cognitive-behavioral therapy on insomnia symptoms and sleep parameters in elderly people.
Materials and Methods: The statistical population includes all the elderly people residing in Kahrizak nursing home, Tehran. The sample consisted of 30 elderly people with insomnia selected by purposive sampling and randomly assigned to experimental and control groups.They completed the Athens Insomnia Scale and Sleep Log. The experimental group received the Edinger’s insomnia disorder multi-component cognitive-behavioral therapy in six 90-min sessions; the control group received no intervention.
Results: Based on MANCOVA, ANCOVA and Benferoni post hoc, group comparison in the pre-test and follow-up showed that the average scores of insomnia and sleep-onset latency were statistically significantly reduced in the experimental group as compared to the control group, and the total length of sleep was significantly increased (P≤ 0/001). Follow-up did not reveal any significant differences between the experimental and control groups as regards the total time of staying in bed.
Conclusion: Based on the findings of this study, it is recommended that psychologists and nurses working in area of elderly use the multi-component cognitive-behavior therapy to improve the sleep quality of the elderly.
Hossein Farrokhi, Faramarz Sohrabi, Ali Delavar,
Volume 16, Issue 3 (12-2018)
Abstract
Background and Aim: Considering that meta-cognitive beliefs play a very important role in the prevention, preservation and continuity of addiction, this study aimed to determine the effectiveness of meta-cognitive group therapy (MCT) on the extent of addiction-proneness in male university students.
Materials and Methods: This study was a quasi-experimental project with pretest-posttest, a control group and follow-up. The statistic population consisted of all the male Bachelor's students of the Mashhad Ferdowsi University, Iran in the academic year 2016-17. The sample was 30 students selected and assigned randomly to an experimental or control group. Data were collected using a meta-cognition questionnaire (MCQ-30) and the addiction potential scale (APS). Statistical tests included analysis of covariance and the dependent t-test.
Results: Covariance and post-test addictive potential scores showed that MCT could desirably affect the addiction-proneness of university male students (p<0.01).
Conclusion: Based on the findings it can be concluded that metacognitive therapy can reduce the addiction proneness of male university student, the effect lasting for three months. Therefore, it is recommended that responsible authorities in the health sector use meta-cognitive therapy for addiction prevention and resumption.
