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Rahmati S, Aboubakri O, Maleki A, Rezaee R, Soleimani S, Li G, Safari M, Ahmadiani N. Risk of cardiovascular and respiratory diseases attributed to satellite-based PM 2.5 over 2017-2022 in Sanandaj, an area of Iran. Int J Biometeorol 2024:10.1007/s00484-024-02697-3. [PMID: 38744707 DOI: 10.1007/s00484-024-02697-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/31/2024] [Revised: 04/02/2024] [Accepted: 04/30/2024] [Indexed: 05/16/2024]
Abstract
The risk of cardiovascular and respiratory diseases attributed to satellite-based PM2.5 has been less investigated. In this study, the attributable risk was estimated in an area of Iran. The predicted air PM2.5 using satellite data and a two-stage regression model was used as the predictor of the diseases. The dose-response linkage between the bias-corrected predictor employing a strong statistical approach and the outcomes was evaluated using the distributed lag nonlinear model. We considered two distinct scenarios of PM2.5 for the risk estimation. Alongside the risk, the attributable risk and number were estimated for different levels of PM2.5 by age and gender categories. The cumulative influence of PM2.5 particles on respiratory illnesses was statistically significant at 13-16 µg/m3 relative to the reference value (median), mostly apparent in the middle delays. The cumulative relative risk of 90th and 95th percentiles were 2.03 (CI 95%: 1.28, 3.19) and 2.25 (CI 95%: 1.28, 3.96), respectively. Nearly 600 cases of the diseases were attributable to the non-optimum values of the pollutant during 2017-2022, of which more than 400 cases were attributed to high values range. The predictor's influence on cardiovascular illnesses was along with uncertainty, indicating that additional research into their relationship is needed. The bias-corrected PM2.5 played an essential role in the prediction of respiratory illnesses, and it may likely be employed as a trigger for a preventative strategy.
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Affiliation(s)
- Shoboo Rahmati
- Department of Epidemiology and Biostatistics, Faculty of Public Health, Kurdistan University of Medical Sciences, Sanandaj, Iran
| | - Omid Aboubakri
- Environmental Health Research Center, Research Institute for Health Development, Kurdistan University of Medical Sciences, Sanandaj, Iran.
- Health Metrics and Evaluation Research Center, Research Institute for Health Development, Kurdistan University of Medical Sciences, Sanandaj, Iran.
| | - Afshin Maleki
- Environmental Health Research Center, Research Institute for Health Development, Kurdistan University of Medical Sciences, Sanandaj, Iran
| | - Reza Rezaee
- Environmental Health Research Center, Research Institute for Health Development, Kurdistan University of Medical Sciences, Sanandaj, Iran.
| | - Samira Soleimani
- Student Research Committee, Department of Environmental Health Engineering, School of Public Health, Hamadan University of Medical Sciences, Hamadan, Iran
| | - Guoxing Li
- Department of Occupational and Environmental Health Sciences, School of Public Health, Peking University, Beijing, China
| | - Mahdi Safari
- Environmental Health Research Center, Research Institute for Health Development, Kurdistan University of Medical Sciences, Sanandaj, Iran
| | - Nashmil Ahmadiani
- Head of Forecasting Department, Iran Meteorological Organization, Kurdistan Meteorological Bureau, Sanandaj, Iran
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2
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Li G, Aboubakri O, Soleimani S, Maleki A, Rezaee R, Safari M, Goudarzi G, Fatehi F. Estimation of PM 2.5 using high-resolution satellite data and its mortality risk in an area of Iran. Int J Environ Health Res 2024:1-13. [PMID: 38461371 DOI: 10.1080/09603123.2024.2325629] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/17/2023] [Accepted: 02/26/2024] [Indexed: 03/11/2024]
Abstract
Satellite-based exposure of fine particulate matters has been seldom used as a predictor of mortality. PM2.5 was predicted using Aerosol Optical Depths (AOD) through a two-stage regression model. The predicted PM2.5 was corrected for the bias using two approaches. We estimated the impact by two different scenarios of PM2.5 in the model. We statistically found different distributions of the predicted PM2.5 over the region. Compared to the reference value (5 µg/m3), 90th and 95th percentiles had significant adverse effect on total mortality (RR 90th percentile:1.45; CI 95%: 1.08-1.95 and RR 95th percentile:1.53; CI 95%: 1.11-2.1). Nearly 1050 deaths were attributed to any range of the air pollution (unhealthy range), of which more than half were attributed to high concentration range. Given the adverse effect of extreme values compared to the both scenarios, more efforts are suggested to define local-specific reference values and preventive strategies.
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Affiliation(s)
- Guoxing Li
- Department of Occupational and Environmental Health Sciences, Peking University, School of Public Health, Beijing, China
| | - Omid Aboubakri
- Environmental Health Research Center, Research Institute for Health Development, Kurdistan University of Medical Sciences, Sanandaj, Iran
| | - Samira Soleimani
- Student Research Committee, Department of Environmental Health Engineering, School of Public Health, Hamadan University of Medical Sciences, Hamadan, Iran
| | - Afshin Maleki
- Environmental Health Research Center, Research Institute for Health Development, Kurdistan University of Medical Sciences, Sanandaj, Iran
| | - Reza Rezaee
- Environmental Health Research Center, Research Institute for Health Development, Kurdistan University of Medical Sciences, Sanandaj, Iran
| | - Mahdi Safari
- Environmental Health Research Center, Research Institute for Health Development, Kurdistan University of Medical Sciences, Sanandaj, Iran
| | - Gholamreza Goudarzi
- Center for Climate Change and Health Research (CCCHR), Dezful University of Medical Sciences, Dezful, Iran
- Department of Environmental Engineering, School of Public Health, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
- Air Pollution and Respiratory Diseases Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Fariba Fatehi
- Vice Chancellor for Research and Technology, Kurdistan University of Medical Sciences, Sanandaj, Iran
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Vercruysse W, Muniz RR, Joos B, Hardy A, Hamed H, Desta D, Boyen HG, Schreurs S, Safari M, Marchal W, Vandamme D. Co-pyrolysis of chicken feathers and macadamia nut shells, a promising strategy to create nitrogen-enriched electrode materials for supercapacitor applications. Bioresour Technol 2024; 396:130417. [PMID: 38316229 DOI: 10.1016/j.biortech.2024.130417] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/05/2023] [Revised: 01/31/2024] [Accepted: 01/31/2024] [Indexed: 02/07/2024]
Abstract
Global food waste emits substantial quantities of nitrogen to the environment (6.3 Mtons annually), chicken feather (CF) waste is a major contributor to this. Pyrolysis, in particular co-pyrolysis of nitrogen-rich and lignocellulosic waste streams is a promising strategy to improve the extent of pyrolytic nitrogen retention by incorporating nitrogen in its solid biochar structure. As such, this biochar can serve as a precursor for nitrogen-enriched activated carbons for application in supercapacitors. Therefore, this study investigates the co-pyrolysis of CF with macadamia nut shells (MNS) to create nitrogen-rich activated carbons. Co-pyrolysis increased nitrogen retention during pyrolysis from 9 % to 18 % compared to CF mono-pyrolysis, while the porosity was maintained. After removing undesirable inorganic impurities by dilute acid washing, this led to a specific capacitance of 21F/g using a scan rate of 20 mV/s. Finally, cycling stability tests demonstrated good stability with 73 % capacitance retention after 10 000 cycles.
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Affiliation(s)
- W Vercruysse
- Analytical and Circular Chemistry, Institute for Materials Research (imo-imomec), Hasselt University, Agoralaan Gebouw D, 3590 Diepenbeek, Belgium
| | - R R Muniz
- Analytical and Circular Chemistry, Institute for Materials Research (imo-imomec), Hasselt University, Agoralaan Gebouw D, 3590 Diepenbeek, Belgium
| | - B Joos
- Design and Synthesis of Inorganic Nanomaterials, Institute for Materials Research (imo-imomec), Hasselt University, Agoralaan Gebouw D, 3590 Diepenbeek, Belgium; IMEC vzw, Division Imomec Associated Laboratory, Wetenschapspark 1, 3590 Diepenbeek, Belgium; EnergyVille, Thor Park 8320, 3600 Genk, Belgium
| | - A Hardy
- Design and Synthesis of Inorganic Nanomaterials, Institute for Materials Research (imo-imomec), Hasselt University, Agoralaan Gebouw D, 3590 Diepenbeek, Belgium; IMEC vzw, Division Imomec Associated Laboratory, Wetenschapspark 1, 3590 Diepenbeek, Belgium; EnergyVille, Thor Park 8320, 3600 Genk, Belgium
| | - H Hamed
- Electrochemical Engineering, Institute for Materials Research (imo-imomec), Hasselt University, Agoralaan, 3590 Diepenbeek, Belgium; IMEC vzw, Division Imomec Associated Laboratory, Wetenschapspark 1, 3590 Diepenbeek, Belgium
| | - D Desta
- Nano Structure Physics, Materials Physics, Institute for Materials Research (imo-imomec), Hasselt University, Agoralaan Gebouw D, 3590 Diepenbeek, Belgium
| | - H-G Boyen
- Nano Structure Physics, Materials Physics, Institute for Materials Research (imo-imomec), Hasselt University, Agoralaan Gebouw D, 3590 Diepenbeek, Belgium
| | - S Schreurs
- Nuclear Technology Centre (NuTeC), Centre for Environmental Sciences (CMK), Agoralaan, 3590 Diepenbeek, Belgium
| | - M Safari
- Electrochemical Engineering, Institute for Materials Research (imo-imomec), Hasselt University, Agoralaan, 3590 Diepenbeek, Belgium; IMEC vzw, Division Imomec Associated Laboratory, Wetenschapspark 1, 3590 Diepenbeek, Belgium
| | - W Marchal
- Analytical and Circular Chemistry, Institute for Materials Research (imo-imomec), Hasselt University, Agoralaan Gebouw D, 3590 Diepenbeek, Belgium
| | - D Vandamme
- Analytical and Circular Chemistry, Institute for Materials Research (imo-imomec), Hasselt University, Agoralaan Gebouw D, 3590 Diepenbeek, Belgium.
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Rezaee R, Fathi S, Maleki A, Aboubakri O, Li G, Safari M, Sharafkhani R, Zarei M. Summer heat waves and their mortality risk over a 14-year period in a western region of Iran. Int J Biometeorol 2023; 67:2081-2091. [PMID: 37845501 DOI: 10.1007/s00484-023-02564-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/27/2023] [Revised: 09/08/2023] [Accepted: 10/06/2023] [Indexed: 10/18/2023]
Abstract
Compared to previous decade, impact of heat waves (HWs) on mortality in recent years needs to be discussed in Iran. We investigated temporal change in added impact of summer HWs on mortality in eight cities of Iran. The pooled length of HWs was compared between 2015-2022 and 2008-2014 using random and fixed-effects of meta-analysis regression model. The temporal change in impact of HWs was evaluated through interaction effect between crossbasis function of HW and year in a two-stage time varying model. In order to pool the reduced coefficients of each period, multivariate meta-regression model, including city-specific temperature and temperature range as heterogenicity factors, was used. In addition to relative risk (RR), attributable fraction (AF) of HW in the two periods was also estimated in each city. In the last years, the frequency of all HWs was higher and the weak HWs were significantly longer. The only significant RR was related to the lowest and low severe HWs which was observed in the second period. In terms of AF, compared to the strong HWs, all weak HWs caused a considerable excess mortality in all cities and second period. The subgroup analysis revealed that the significant impact in the second period was mainly related to females and elderlies. The increased risk and AF due to more frequent and longer HWs (weak HWs) in the last years highlights the need for mitigation strategies in the region. Because of uncertainty in the results of severe HWs, further elaborately investigation of the HWs is need.
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Affiliation(s)
- Reza Rezaee
- Environmental Health Research Center, Research Institute for Health Development, Kurdistan University of Medical Sciences, Sanandaj, Iran
| | - Serveh Fathi
- Environmental Health Research Center, Research Institute for Health Development, Kurdistan University of Medical Sciences, Sanandaj, Iran
| | - Afshin Maleki
- Environmental Health Research Center, Research Institute for Health Development, Kurdistan University of Medical Sciences, Sanandaj, Iran
| | - Omid Aboubakri
- Environmental Health Research Center, Research Institute for Health Development, Kurdistan University of Medical Sciences, Sanandaj, Iran.
| | - Guoxing Li
- Department of Occupational and Environmental Health Sciences, Peking University, School of Public Health, Beijing, China
| | - Mahdi Safari
- Environmental Health Research Center, Research Institute for Health Development, Kurdistan University of Medical Sciences, Sanandaj, Iran
| | - Rahim Sharafkhani
- School of Public Health, Khoy University of Medical Sciences, Khoy, Iran
| | - Mozhdeh Zarei
- Department of Health in Emergencies and Disasters, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
- Deputy of Research and Technology, Kurdistan University of Medical Sciences, Sanandaj, Iran
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Amini N, Maleki A, Rezaee R, Shahmoradi B, Mohammadi E, Safari M, Daraie H. Fabrication of copper oxide nanoparticles immobilized onto deoxyribonucleic acid template: application for electrochemical detection of 2,4-dichlorophenoxyacetic acid. J IRAN CHEM SOC 2022. [DOI: 10.1007/s13738-022-02679-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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6
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Safari M, Hoseinian F, Deglon D, Leal Filho L, Souza Pinto T. Impact of flotation operational parameters on the optimization of fine and coarse Itabirite iron ore beneficiation. POWDER TECHNOL 2022. [DOI: 10.1016/j.powtec.2022.117772] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
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7
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Chaparinia F, Cheshmeh Soltani RD, Safari M, Godini H, Khataee A. Treatment of aquatic medium containing common and emerging contaminants using an aero-electrochemical process based on graphite cathode and three metal oxides alloy as anode: Central composite design and photo/sono-enhancement. Chemosphere 2022; 297:134129. [PMID: 35231477 DOI: 10.1016/j.chemosphere.2022.134129] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/25/2022] [Revised: 02/19/2022] [Accepted: 02/24/2022] [Indexed: 06/14/2023]
Abstract
An aero-electrochemical advanced oxidation process (aero-EAOP) equipped with graphite cathode and dimensionally stable anodes was utilized for the treatment of aquatic media containing common and emerging contaminants. Among various anode materials, the application of Ti/RuO2/IrO2/SnO2 anode resulted in the highest effectiveness. Central composite experimental design (CCED) was used to attain the optimum operational parameters in terms of chlorine generation. Simultaneous decolorization and ammonium removal by the aero-EAOP process were investigated. Accordingly, the decolorization efficiency of 94%, along with the ammonium removal of 65.2%, was obtained within 30 min. Implementation of ultrasound and UV irradiation resulted in the complete decolorization within 25 and 20 min, respectively. In comparison, the influence of ultrasound and UV irradiation on the ammonium removal by the aero-EAOP reactor was not remarkable. Mineralization efficiency of 75.1% was obtained during the short reaction time of 30 min. With increasing hydraulic retention time (HRT) from 2 to 20 min, decolorization efficiency increased from 12.0 to 55.7% and ammonium removal efficiency increased from 16.6 to 37.8%, respectively. The complete degradation of amoxicillin (AMX) and tetracycline (TC) antibiotics were achieved within 25 and 30 min, respectively. The degradation efficiencies of ibuprofen (IBP), acetaminophen (APAP) and endocrine disrupting compound of bisphenol A (BPA) were obtained to be 58, 66 and 78% within 30 min, respectively. Photo-assisted aero-EAOP was more efficient than the aero-EAOP in degrading target emerging pollutants.
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Affiliation(s)
- Fatemeh Chaparinia
- Department of Environmental Health Engineering, School of Health, Arak University of Medical Sciences, Arak, Iran
| | | | - Mahdi Safari
- Department of Environmental Health Engineering, Faculty of Health, Kurdistan University of Medical Sciences, Sanandaj, Iran
| | - Hatam Godini
- Department of Environmental Health Engineering, Faculty of Health, Alborz University of Medical Sciences, Karaj, Iran
| | - Alireza Khataee
- Research Laboratory of Advanced Water and Wastewater Treatment Processes, Department of Applied Chemistry, Faculty of Chemistry, University of Tabriz, 51666-16471, Tabriz, Iran; Department of Materials Science and Nanotechnology Engineering, Faculty of Engineering, Near East University, 99138, Nicosia, North Cyprous, Mersin 10, Turkey; Department of Material Science and Physical Chemistry of Materials, South Ural State University, 454080, Chelyabinsk, Russian Federation
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8
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Zaroushani V, Safari M. Occurrence of opportunistic incidents in hospitals during the Covid-19 pandemic. Occup Med (Lond) 2022. [DOI: 10.18502/tkj.v13i4.9139] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
For nearly two years, the world has been facing a common crisis as Covid-19. In the meantime, governments have suffered a wide variety of damages and costs, and damage to human capital and the loss of health professionals is one of the irreparable costs of health systems in all governments. During this crisis, health care systems and specialists were exposed to special occupational hazards over specific periods of time, and the exposure of the medical staff to these hazards in hospitals led to a number of opportunistic incidents. Investigation of opportunistic incidents can help identify the sources of occupational hazards of medical staff and lead to proper management of risks associated with these accidents. This article aims to draw researchers' attention to opportunistic incidents during the Covid 19 pandemic as a global crisis in hospitals.
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9
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Safari M, Tahmasbi V, Rabiee AH. Investigation into the automatic drilling of cortical bones using ANFIS-PSO and sensitivity analysis. Neural Comput Appl 2021. [DOI: 10.1007/s00521-021-06248-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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10
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Loh JYY, Safari M, Mao C, Viasus CJ, Eleftheriades GV, Ozin GA, Kherani NP. Near-Perfect Absorbing Copper Metamaterial for Solar Fuel Generation. Nano Lett 2021; 21:9124-9130. [PMID: 34723552 DOI: 10.1021/acs.nanolett.1c02886] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Metamaterials are a new class of artificial materials that can achieve electromagnetic properties that do not occur naturally, and as such they can also be a new class of photocatalytic structures. We show that metal-based catalysts can achieve electromagnetic field amplification and broadband absorption by decoupling optical properties from the material composition as exemplified with a ZnO/Cu metamaterial surface comprising periodically arranged nanocubes. Through refractive index engineering close to the index of air, the metamaterial exhibits near-perfect 98% absorption. The combination of plasmonics and broadband absorption elevates the weak electric field intensities across the nonplasmonic absorption range. This feedback between optical excitation and plasmonic excitation dramatically enhances light-to-dark catalytic rates by up to a factor of 181 times, compared to a 3 times photoenhancement of ZnO/Cu nanoparticles or films, and with angular invariance. These results show that metamaterial catalysts can act as a singular light harvesting device that substantially enhances photocatalysis of important reactions.
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Affiliation(s)
- Joel Y Y Loh
- Department of Electrical and Computing Engineering, University of Toronto, Toronto, Ontario M5S 3G4, Canada
| | - Mahdi Safari
- Department of Electrical and Computing Engineering, University of Toronto, Toronto, Ontario M5S 3G4, Canada
| | - Chengliang Mao
- Department of Chemistry,University of Toronto, 80 Saint George Street, Toronto, Ontario M5S 3H6, Canada
| | - Camilo J Viasus
- Department of Chemistry,University of Toronto, 80 Saint George Street, Toronto, Ontario M5S 3H6, Canada
| | - George V Eleftheriades
- Department of Electrical and Computing Engineering, University of Toronto, Toronto, Ontario M5S 3G4, Canada
| | - Geoffrey A Ozin
- Department of Chemistry,University of Toronto, 80 Saint George Street, Toronto, Ontario M5S 3H6, Canada
| | - Nazir P Kherani
- Department of Electrical and Computing Engineering, University of Toronto, Toronto, Ontario M5S 3G4, Canada
- Department of Material Science and Engineering, University of Toronto, Toronto, Ontario M5S 3E4, Canada
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Gheysarzadeh A, Sadeghifard N, Safari M, Rashidian T, Mohammadyari E, Tavan H. Case series of four pregnant women with COVID-19 in Ilam, Iran. New Microbes New Infect 2020; 38:100783. [PMID: 33072336 PMCID: PMC7550274 DOI: 10.1016/j.nmni.2020.100783] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2020] [Revised: 10/04/2020] [Accepted: 10/06/2020] [Indexed: 01/07/2023] Open
Abstract
Coronavirus disease 2019 (COVID-19) has quickly become the most important health burden globally as a result of the pandemic. Pregnant women are considered to be in a high-risk group because COVID-19 infection in this group may result in extensive damage. We aimed to describe COVID-19 infections in four pregnant women in Ilam, Iran. All had positive results first by real-time PCR, then by computed tomographic scan. All of these patients were hospitalized, and all of them were treated successfully. This study showed that although pregnant women are at a higher risk of COVID-19 infection, they can be treated successfully. It also demonstrated that receiving care and treatment at the hospital can be a good experience for pregnant women.
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Affiliation(s)
- A. Gheysarzadeh
- Department of Clinical Biochemistry, Ilam University of Medical Sciences, Ilam, Iran
| | - N. Sadeghifard
- Department of Microbiology, School of Medicine, Clinical Microbiology Research Center, Ilam University of Medical Sciences, Ilam, Iran
| | - M. Safari
- Department of Radiology, School of Medicine, Emam Khomeini Hospital, Ilam University of Medical Sciences, Ilam, Iran
| | - T. Rashidian
- Department of Obstetrics and Gynecology, School of Medicine, Ayatollah Taleghani Hospital, Ilam University of Medical Sciences, Ilam, Iran
| | - E. Mohammadyari
- Department of Cardiology, School of Medicine, Ilam University of Medical Sciences, Ilam, Iran
| | - H. Tavan
- Department of Medical Surgical Nursing, Clinical Research Development Unit, Shahid Mostafa Khomeini Hospital, Ilam University of Medical Sciences, Ilam, Iran
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12
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Gheysarzadeh A, Sadeghifard N, Safari M, Balavandi F, Falahi S, Kenarkoohi A, Tavan H. Report of five nurses infected with severe acute respiratory syndrome coronavirus 2 during patient care: case series. New Microbes New Infect 2020; 36:100694. [PMID: 32405418 PMCID: PMC7219377 DOI: 10.1016/j.nmni.2020.100694] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2020] [Revised: 05/05/2020] [Accepted: 05/07/2020] [Indexed: 12/21/2022] Open
Abstract
The high prevalence of coronavirus disease 2019 (COVID-19) has received much attention all over the world. Nurses are in the first line of defence against severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) and are placed in a high-risk situation. This study aimed to report on infection with SARS-CoV-2 during patient care among nures in the Mostafa Khomini Hospital, Ilam, Iran. In this hospital 125 nurses were enrolled in the COVID-19 centre. Five out of 125 nurses (4%) who enrolled in the COVID-19 infection centre, developed COVID-19. They were first positive by real-time PCR but the CT scan was positive for only one of them. None of the infected nurses were hospitalized and all of them preferred to quarantine at home and receive the necessary care and treatment (oseltamivir, azithromycin and lopinavir/ritonavir). This study showed that, regardless of self caring, the nurses were exposed to the virus, because at the start of the SARS-CoV-2 outbreak in Iran, there was no special protection against this infection, so the nurses were placed at risk. This study also reported that receiving the necessary care and treatment at home was a good experience for nurses and can be used in some cases.
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Affiliation(s)
- A. Gheysarzadeh
- Clinical Microbiology Research Centre, Ilam University of Medical Sciences, Ilam, Iran
- Department of Biology, Faculty of Science, Ilam University, Ilam, Iran
| | - N. Sadeghifard
- Clinical Microbiology Research, Centre Ilam University of Medical Sciences, Iran
| | - M. Safari
- Department of Radiology, School of Medicine, Emam Khomeini Hospital, Ilam University of Medical Sciences, Ilam, Iran
| | - F. Balavandi
- Department of Cardiology, School of Medicine, Shahid Mostafa Khomaeini Hospital, Ilam University of Medical Sciences, Ilam, Iran
| | - S. Falahi
- Zoonotic Diseases Research Center, Ilam University of Medical Sciences, Ilam, Iran
| | - A. Kenarkoohi
- Department of Microbiology, Faculty of Medicine, Ilam University of Medical Sciences, Ilam, Iran
| | - H. Tavan
- Clinical Research Development Unit, Shahid Mostafa, Khomeini Hospital, Ilam University of Medical Sciences, Ilam, Iran
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13
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St-Denis T, Yazda K, Capaldi X, Bustamante J, Safari M, Miyahara Y, Zhang Y, Grutter P, Reisner W. An apparatus based on an atomic force microscope for implementing tip-controlled local breakdown. Rev Sci Instrum 2019; 90:123703. [PMID: 31893796 DOI: 10.1063/1.5129665] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/30/2019] [Accepted: 11/30/2019] [Indexed: 06/10/2023]
Abstract
Solid-state nanopores are powerful tools for sensing of single biomolecules in solution. Fabrication of solid-state nanopores is still challenging, however; in particular, new methods are needed to facilitate the integration of pores with larger nanofluidic and electronic device architectures. We have developed the tip-controlled local breakdown (TCLB) approach, in which an atomic force microscope (AFM) tip is brought into contact with a silicon nitride membrane that is placed onto an electrolyte reservoir. The application of a voltage bias at the AFM tip induces a dielectric breakdown that leads to the formation of a nanopore at the tip position. In this work, we report on the details of the apparatus used to fabricate nanopores using the TCLB method, and we demonstrate the formation of nanopores with smaller, more controlled diameters using a current limiting circuit that zeroes the voltage upon pore formation. Additionally, we demonstrate the capability of TCLB to fabricate pores aligned to embedded topographical features on the membranes.
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Affiliation(s)
- T St-Denis
- Physics Department, McGill University, 3600 rue University, Montreal, Quebec H3A 2T8, Canada
| | - K Yazda
- Physics Department, McGill University, 3600 rue University, Montreal, Quebec H3A 2T8, Canada
| | - X Capaldi
- Physics Department, McGill University, 3600 rue University, Montreal, Quebec H3A 2T8, Canada
| | - J Bustamante
- Physics Department, McGill University, 3600 rue University, Montreal, Quebec H3A 2T8, Canada
| | - M Safari
- Norcada, 4548-99 Street NW, Edmonton, Alberta T6E 5H5, Canada
| | - Y Miyahara
- Physics Department, McGill University, 3600 rue University, Montreal, Quebec H3A 2T8, Canada
| | - Y Zhang
- Physics Department, McGill University, 3600 rue University, Montreal, Quebec H3A 2T8, Canada
| | - P Grutter
- Physics Department, McGill University, 3600 rue University, Montreal, Quebec H3A 2T8, Canada
| | - W Reisner
- Physics Department, McGill University, 3600 rue University, Montreal, Quebec H3A 2T8, Canada
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14
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Safari M, Aghaie M, Minuchehr A, Allahyarizadeh G. Numerical study of hyperstoichiometric fuel creep (UO2+) in fuel clad interaction of WWER1000. ANN NUCL ENERGY 2019. [DOI: 10.1016/j.anucene.2019.07.040] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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15
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Hossienzadeh K, Maleki A, Daraei H, Safari M, Pawar R, Lee SM. Sonocatalytic and photocatalytic efficiency of transition metal-doped ZnO nanoparticles in the removal of organic dyes from aquatic environments. KOREAN J CHEM ENG 2019. [DOI: 10.1007/s11814-019-0299-6] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/07/2022]
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16
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Soltani RDC, Mashayekhi M, Naderi M, Boczkaj G, Jorfi S, Safari M. Sonocatalytic degradation of tetracycline antibiotic using zinc oxide nanostructures loaded on nano-cellulose from waste straw as nanosonocatalyst. Ultrason Sonochem 2019; 55:117-124. [PMID: 31084785 DOI: 10.1016/j.ultsonch.2019.03.009] [Citation(s) in RCA: 74] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/04/2019] [Revised: 02/24/2019] [Accepted: 03/09/2019] [Indexed: 05/12/2023]
Abstract
The aim of the present investigation was the combination of ZnO nanostructures with nano-cellulose (NC) for the efficient degradation of tetracycline (TC) antibiotic under ultrasonic irradiation. The removal efficiency of 12.8% was obtained by the sole use of ultrasound (US), while the removal efficiency increased up to 70% by the US/ZnO treatment process. Due to the integration of ZnO nanostructures with NC, the removal efficiency of 87.6% was obtained within 45 min. The removal efficiency substantially decreased in the presence of tert-butyl alcohol (more than 25% reduction), indicating that radOH-mediation oxidation is responsible for the degradation of TC molecules. Peroxymonosulfate (PMS) led to the most enhancing effect on the removal of TC among percarbonate, persulfate and periodate ions. The addition of PMS caused the degradation efficiency of 96.4% within the short contact time of 15 min. The bio-toxicity examination on the basis of inhibition test conducted on activated sludge revealed diminishing the oxygen consumption inhibition percent [IOUR (%)] from 33.6 to 22.1% during the US/ZnO/NC process. Consequently, the utilization of the US/ZnO/NC process can convert TC molecules to less toxic compounds. However, longer reaction time is required for complete conversion into non-toxic substances.
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Affiliation(s)
| | - Masumeh Mashayekhi
- Department of Environmental Health Engineering, School of Health, Arak University of Medical Sciences, Arak, Iran
| | - Masumeh Naderi
- Department of Environmental Health Engineering, School of Health, Arak University of Medical Sciences, Arak, Iran
| | - Grzegorz Boczkaj
- Gdansk University of Technology, Faculty of Chemistry, Department of Process Engineering and Chemical Technology, 80 - 233 Gdansk, G. Narutowicza St. 11/12, Poland
| | - Sahand Jorfi
- Department of Environmental Health Engineering, School of Health, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Mahdi Safari
- Environmental Health Research Center, Research Institute for Health Development, Kurdistan University of Medical Sciences, Sanandaj, Iran
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17
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Ebrahimi R, Hossienzadeh K, Maleki A, Ghanbari R, Rezaee R, Safari M, Shahmoradi B, Daraei H, Jafari A, Yetilmezsoy K, Puttaiah SH. Effects of doping zinc oxide nanoparticles with transition metals (Ag, Cu, Mn) on photocatalytic degradation of Direct Blue 15 dye under UV and visible light irradiation. J Environ Health Sci Eng 2019; 17:479-492. [PMID: 31297221 PMCID: PMC6582272 DOI: 10.1007/s40201-019-00366-x] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/22/2018] [Accepted: 03/11/2019] [Indexed: 06/10/2023]
Abstract
BACKGROUND Azo dyes represent the most commonly used group of dyes in the textile industry. These organic dyes are mainly resistant to biodegradation and may exhibit toxic and carcinogenic properties. The purpose of this study was to investigate the effects of doping zinc oxide (ZnO) nanoparticles (NPs) with transition metals (silver, manganese, and copper) on the photocatalytic efficiency of ZnO NPs in the removal of Direct Blue 15 dye from aqueous environments under ultraviolet (UV) radiation and visible light irradiation. METHODS One or two metals were used for doping the NPs. In total, seven types of undoped and transition metal-doped NPs were synthesized using the thermal solvent method with ZnO precursors and transition metal salts. The characteristics of the synthesized NPs were determined based on the scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDX), X-ray diffraction (XRD), Fourier transform infrared (FTIR) spectroscopy, dynamic light scattering (DLS), atomic force microscopy (AFM), and zeta potential measurements. RESULTS The produced ZnO NPs did not exhibit any particular photocatalytic activities under UV radiation and visible light irradiation. The highest removal efficiency under UV radiation was about 74% in the presence of silver-doped ZnO NPs, while the maximum efficiency under visible light was 70% in the presence of copper-doped ZnO NPs. The lowest removal efficiency was related to pure ZnO, which was 18.4% and 14.6% under UV and visible light irradiation, respectively. Although the efficiency of dye removal under visible light was not high compared to UV radiation, this efficiency was noteworthy in terms of both practical and economic aspects since it was achieved without the presence of ultraviolet radiation. CONCLUSIONS The synthesis of transition metal-doped ZnO nanophotocatalysts (with one or two metals) under UV radiation or visible light irradiation could be used as an efficient and promising technology for the photocatalytic removal of Direct Blue 15 dye from aqueous environments.
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Affiliation(s)
- Roya Ebrahimi
- Environmental Health Research Center, Research Institute for Health Development, Kurdistan University of Medical Sciences, Sanandaj, Iran
| | - Khosro Hossienzadeh
- Environmental Health Research Center, Research Institute for Health Development, Kurdistan University of Medical Sciences, Sanandaj, Iran
| | - Afshin Maleki
- Environmental Health Research Center, Research Institute for Health Development, Kurdistan University of Medical Sciences, Sanandaj, Iran
| | - Reza Ghanbari
- Social Determinant of Health Research, Qazvin University of Medical Sciences, Qazvin, Iran
| | - Reza Rezaee
- Environmental Health Research Center, Research Institute for Health Development, Kurdistan University of Medical Sciences, Sanandaj, Iran
| | - Mahdi Safari
- Environmental Health Research Center, Research Institute for Health Development, Kurdistan University of Medical Sciences, Sanandaj, Iran
| | - Behzad Shahmoradi
- Environmental Health Research Center, Research Institute for Health Development, Kurdistan University of Medical Sciences, Sanandaj, Iran
| | - Hiua Daraei
- Environmental Health Research Center, Research Institute for Health Development, Kurdistan University of Medical Sciences, Sanandaj, Iran
| | - Ali Jafari
- School of Health, Lorestan University of Medical Sciences, Khorramabad, Iran
| | - Kaan Yetilmezsoy
- Department of Environmental Engineering, Faculty of Civil Engineering, Yildiz Technical University, Davutpasa Campus, 34220 Esenler, Istanbul Turkey
| | - Shivaraju Harikaranahalli Puttaiah
- Department of Water and Health, Faculty of Life Sciences, Jagadguru Sri Shivarathreeshwara University, Sri Shivarathreeshwara Nagara, Mysuru, Karnataka 570015 India
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Safari M, Ghasemi E, Alikhani M, Ansari-Mahyari S. Supplementation effects of pomegranate by-products on oxidative status, metabolic profile, and performance in transition dairy cows. J Dairy Sci 2018; 101:11297-11309. [DOI: 10.3168/jds.2018-14506] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2018] [Accepted: 06/12/2018] [Indexed: 01/01/2023]
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19
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Sepyani F, Darvishi Cheshmeh Soltani R, Jorfi S, Godini H, Safari M. Implementation of continuously electro-generated Fe 3O 4 nanoparticles for activation of persulfate to decompose amoxicillin antibiotic in aquatic media: UV 254 and ultrasound intensification. J Environ Manage 2018; 224:315-326. [PMID: 30056351 DOI: 10.1016/j.jenvman.2018.07.072] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/08/2018] [Revised: 07/19/2018] [Accepted: 07/20/2018] [Indexed: 06/08/2023]
Abstract
In the present investigation, the treatment of amoxicillin (AMX)-polluted water by the activated persulfate (PS) was considered. As a novel research, continuously electro-generated magnetite (Fe3O4) nanoparticles (CEMNPs) were utilized as the activator of PS in an electrochemical medium. The PS/CEMNPs displayed a remarkable enhancement in the decomposition of AMX molecules up to 72.6% compared with lonely PS (24.8%) and CEMNPs (13.4%). On the basis of pseudo-first order reaction rate constants, the synergy percent of about 70% was achieved due to the combination of PS with CEMNPs. The adverse influence of free radical-scavenging compounds on the efficiency of the PS/CEMNPs process was in the following order: carbonate < chloride < tert-butyl alcohol < ethanol. Overall, these results proved the main role of free radical species in degrading AMX. The implementation of ultrasound (US) enhanced the performance of the PS/CEMNPs process. Nevertheless, the highest degradation efficiency of about 94% was achieved when UV254 lamp was joined the PS/CEMNPs system. Under UV254 and US irradiation, the results showed significant potential of the PS/CEMNPs process for degrading AMX antibiotic and generating low toxic effluent based on the activated sludge inhibition test. However, more time is needed to achieve the acceptable mineralization.
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Affiliation(s)
- Fatemeh Sepyani
- Department of Environmental Health Engineering, School of Health, Arak University of Medical Sciences, Arak, Iran
| | | | - Sahand Jorfi
- Environmental Technologies Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Hatam Godini
- Department of Environmental Health Engineering, School of Health, Alborz University of Medical Sciences, Karaj, Iran
| | - Mahdi Safari
- Environmental Health Research Center, Research Institute for Health Development, Kurdistan University of Medical Sciences, Sanandaj, Iran
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20
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Safari M, Khataee A, Darvishi Cheshmeh Soltani R, Rezaee R. Ultrasonically facilitated adsorption of an azo dye onto nanostructures obtained from cellulosic wastes of broom and cooler straw. J Colloid Interface Sci 2018; 522:228-241. [DOI: 10.1016/j.jcis.2018.03.076] [Citation(s) in RCA: 53] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2017] [Revised: 03/12/2018] [Accepted: 03/21/2018] [Indexed: 11/17/2022]
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21
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Kiani M, Abdolali A, Safari M. Analytical method for analysis of electromagnetic scattering from inhomogeneous spherical structures using duality principles. Phys Rev E 2018; 97:032137. [PMID: 29776152 DOI: 10.1103/physreve.97.032137] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2017] [Indexed: 11/07/2022]
Abstract
In this article, an analytical approach is presented for the analysis of electromagnetic (EM) scattering from radially inhomogeneous spherical structures (RISSs) based on the duality principle. According to the spherical symmetry, similar angular dependencies in all the regions are considered using spherical harmonics. To extract the radial dependency, the system of differential equations of wave propagation toward the inhomogeneity direction is equated with the dual planar ones. A general duality between electromagnetic fields and parameters and scattering parameters of the two structures is introduced. The validity of the proposed approach is verified through a comprehensive example. The presented approach substitutes a complicated problem in spherical coordinate to an easy, well posed, and previously solved problem in planar geometry. This approach is valid for all continuously varying inhomogeneity profiles. One of the major advantages of the proposed method is the capability of studying two general and applicable types of RISSs. As an interesting application, a class of lens antenna based on the physical concept of the gradient refractive index material is introduced. The approach is used to analyze the EM scattering from the structure and validate strong performance of the lens.
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Affiliation(s)
- M Kiani
- Department of Electrical Engineering, Iran University of Science and Technology, Narmak, Tehran, Iran
| | - A Abdolali
- Department of Electrical Engineering, Iran University of Science and Technology, Narmak, Tehran, Iran
| | - M Safari
- Department of Electrical Engineering, Iran University of Science and Technology, Narmak, Tehran, Iran
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22
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Soltani RDC, Safari M, maleki A, Rezaee R, Teymouri P, Hashemi SE, Ghanbari R, Zandsalimi Y. Preparation of Chitosan/Bone Char/$$\hbox {Fe}_{3}\hbox {O}_{4}$$Fe3O4 Nanocomposite for Adsorption of Hexavalent Chromium in Aquatic Environments. Arab J Sci Eng 2017. [DOI: 10.1007/s13369-017-3030-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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23
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24
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Safari M, Mosleminiya N, Abdolali A. Thermal mapping on male genital and skin tissues of laptop thermal sources and electromagnetic interaction. Bioelectromagnetics 2017; 38:550-558. [PMID: 28799651 DOI: 10.1002/bem.22068] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2015] [Accepted: 06/21/2017] [Indexed: 11/05/2022]
Abstract
Since the development of communication devices and expansion of their applications, there have been concerns about their harmful health effects. The main aim of this study was to investigate laptop thermal effects caused by exposure to electromagnetic fields and thermal sources simultaneously; propose a nondestructive, replicable process that is less expensive than clinical measurements; and to study the effects of positioning any new device near the human body in steady state conditions to ensure safety by U.S. and European standard thresholds. A computer simulation was designed to obtain laptop heat flux from SolidWorks flow simulation. Increase in body temperature due to heat flux was calculated, and antenna radiation was calculated using Computer Simulation Technology (CST) Microwave Studio software. Steady state temperature and specific absorption rate (SAR) distribution in user's body, and heat flux beneath the laptop, were obtained from simulations. The laptop in its high performance mode caused 420 (W/m2 ) peak two-dimensional heat flux beneath it. The cumulative effect of laptop in high performance mode and 1 W antenna radiation resulted in temperatures of 42.9, 38.1, and 37.2 °C in lap skin, scrotum, and testis, that is, 5.6, 2.1, and 1.4 °C increase in temperature, respectively. Also, 1 W antenna radiation caused 0.37 × 10-3 and 0.13 × 10-1 (W/kg) peak three-dimensional SAR at 2.4 and 5 GHz, respectively, which could be ignored in reference to standards and temperature rise due to laptop use. Bioelectromagnetics. 38:550-558, 2017. © 2017 Wiley Periodicals, Inc.
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Affiliation(s)
- Mahdi Safari
- School of Electrical Engineering, Iran University of Science and Technology, Tehran, Iran
| | - Navid Mosleminiya
- School of Electrical Engineering, Iran University of Science and Technology, Tehran, Iran
| | - Ali Abdolali
- School of Electrical Engineering, Iran University of Science and Technology, Tehran, Iran
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25
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Hossini H, Darvishi Cheshmeh Soltani R, Safari M, Maleki A, Rezaee R, Ghanbari R. The application of a natural chitosan/bone char composite in adsorbing textile dyes from water. CHEM ENG COMMUN 2017. [DOI: 10.1080/00986445.2017.1340274] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/07/2022]
Affiliation(s)
- Hooshyar Hossini
- Department of Environmental Health Engineering, School of Health, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | | | - Mahdi Safari
- Environmental Health Research Center, Kurdistan University of Medical Sciences, Sanandaj, Iran
- Department of Environmental Health Engineering, School of Health, Kurdistan University of Medical Sciences, Sanandaj, Iran
| | - Afshin Maleki
- Environmental Health Research Center, Kurdistan University of Medical Sciences, Sanandaj, Iran
- Department of Environmental Health Engineering, School of Health, Kurdistan University of Medical Sciences, Sanandaj, Iran
| | - Reza Rezaee
- Environmental Health Research Center, Kurdistan University of Medical Sciences, Sanandaj, Iran
- Department of Environmental Health Engineering, School of Health, Kurdistan University of Medical Sciences, Sanandaj, Iran
| | - Reza Ghanbari
- Department of Environmental Health Engineering, School of Public Health, Qazvin University of Medical Sciences, Qazvin, Iran
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26
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Darvishi Cheshmeh Soltani R, Safari M, Maleki A, Rezaee R, Shahmoradi B, Shahmohammadi S, Ghahramani E. Decontamination of arsenic(V)-contained liquid phase utilizing Fe 3O 4/bone char nanocomposite encapsulated in chitosan biopolymer. Environ Sci Pollut Res Int 2017; 24:15157-15166. [PMID: 28500548 DOI: 10.1007/s11356-017-9128-9] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/24/2017] [Accepted: 04/26/2017] [Indexed: 06/07/2023]
Abstract
The application of a novel nanocomposite synthesized through the combination of Fe3O4 nanoparticles and bone char particles for the adsorption of As(V) ions in the aquatic medium was investigated. As-prepared nanocomposite was immobilized by using chitosan biopolymer. The characterization of the nanocomposite was performed via SEM, XRD, FT-IR, and BET together with the determination of zero-point charge of the adsorbent surface. As results, the obtained experimental data were fitted well with pseudo-first-order kinetic model (R2 = 0.997) and Langmuir isotherm model (R2 = 0.990) with the maximum adsorption capacity of about 112 μg/g. Increasing the dosage of nanocomposite and initial solute concentration led to increasing the adsorption capacity of As(V) ions, while decreasing the solution temperature resulted in the enhanced adsorption process. According to the results of thermodynamic study, the adsorption of As(V) ions onto the nanocomposite was spontaneous and exothermic in nature.
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Affiliation(s)
| | - Mahdi Safari
- Environmental Health Research Center, Kurdistan University of Medical Sciences, Sanandaj, Iran.
- Department of Environmental Health, School of Health, Kurdistan University of Medical Sciences, Sanandaj, Iran.
| | - Afshin Maleki
- Environmental Health Research Center, Kurdistan University of Medical Sciences, Sanandaj, Iran
| | - Reza Rezaee
- Environmental Health Research Center, Kurdistan University of Medical Sciences, Sanandaj, Iran
| | - Behzad Shahmoradi
- Environmental Health Research Center, Kurdistan University of Medical Sciences, Sanandaj, Iran
| | - Siran Shahmohammadi
- Environmental Health Research Center, Kurdistan University of Medical Sciences, Sanandaj, Iran
| | - Esmail Ghahramani
- Environmental Health Research Center, Kurdistan University of Medical Sciences, Sanandaj, Iran
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27
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Jafari A, Rezaee R, Nasseri S, Mahvi AH, Maleki A, Safari M, Shahmoradi B, Daraei H. Application of micellar enhanced ultrafiltration (MEUF) for arsenic (v) removal from aqueous solutions and process optimization. J DISPER SCI TECHNOL 2017. [DOI: 10.1080/01932691.2016.1263798] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/07/2022]
Affiliation(s)
- Ali Jafari
- Department of Environmental Health Engineering, Faculty of Health and Nutrition, Lorestan University of Medical Sciences, Khorramabad, Iran
| | - Reza Rezaee
- Environmental Health Research Center, Kurdistan University of Medical Sciences, Sanandaj, Iran
- Department of Environmental Health Engineering, Faculty of Health, Kurdistan University of Medical Sciences, Sanandaj, Iran
| | - Simin Nasseri
- Center for Water Quality Research, Institute for Environmental Research, Tehran University of Medical Sciences, Tehran, Iran
- Department of Environmental Health Engineering, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
| | - Amir Hossein Mahvi
- Department of Environmental Health Engineering, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
- Center for Solid Waste Research, Institute for Environmental Research, Tehran University of Medical Sciences, Tehran, Iran
| | - Afshin Maleki
- Environmental Health Research Center, Kurdistan University of Medical Sciences, Sanandaj, Iran
| | - Mahdi Safari
- Environmental Health Research Center, Kurdistan University of Medical Sciences, Sanandaj, Iran
| | - Behzad Shahmoradi
- Environmental Health Research Center, Kurdistan University of Medical Sciences, Sanandaj, Iran
| | - Hiua Daraei
- Environmental Health Research Center, Kurdistan University of Medical Sciences, Sanandaj, Iran
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Jorfi S, Darvishi Cheshmeh Soltani R, Ahmadi M, Khataee A, Safari M. Sono-assisted adsorption of a textile dye on milk vetch-derived charcoal supported by silica nanopowder. J Environ Manage 2017; 187:111-121. [PMID: 27888712 DOI: 10.1016/j.jenvman.2016.11.042] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/16/2016] [Revised: 11/08/2016] [Accepted: 11/19/2016] [Indexed: 06/06/2023]
Abstract
This study was performed to assess the efficiency of silica nanopowder (SNP)/milk vetch-derived charcoal (MVDC) nanocomposite coupled with the ultrasonic irradiation named sono-adsorption process for treating water-contained Basic Red 46 (BR46) dye. Field emission scanning electron microscopy (FE-SEM), X-ray diffraction (XRD), Brunauer-Emmett-Teller (BET) and Fourier transform infrared spectroscopy (FT-IR) were performed for the characterization of as-prepared adsorbent. The sono-assisted adsorption process was optimized using response surface optimization on the basis of central composite design by the application of quadratic model. Accordingly, the color removal can be retained more than 93% by an initial BR46 concentration of 8 mg/L, sonication time of 31 min, adsorbent dosage of 1.2 g/L and initial pH of 9. The pseudo-second order kinetic model described the sono-assisted adsorption of BR46 reasonably well (R2 > 0.99). The intra-particular diffusion kinetic model pointed out that the sono-assisted adsorption of BR46 onto SNP/MVDC nanocomposite was diffusion controlled as well as that ultrasonication enhanced the diffusion rate.
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Affiliation(s)
- Sahand Jorfi
- Environmental Technologies Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran; Department of Environmental Health Engineering, School of Public Health, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | | | - Mehdi Ahmadi
- Environmental Technologies Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran; Department of Environmental Health Engineering, School of Public Health, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Alireza Khataee
- Laboratory of Advanced Water and Wastewater Treatment Processes, Department of Applied Chemistry, Faculty of Chemistry, University of Tabriz, Tabriz, Iran
| | - Mahdi Safari
- Department of Environmental Health Engineering, School of Health, Kurdistan University of Medical Sciences, Sanandaj, Iran; Environmental Health Research Center, Kurdistan University of Medical Sciences, Sanandaj, Iran
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Beigi M, Fathi Kazerooni A, Safari M, Ameri A, Moini B, Shojaee Moghdam M, Salighehrad H. 32P Heterogeneity analysis of DW MRI as a biomarker for prediction of overall survival and 6 month PFS in GBM patients. Ann Oncol 2016. [DOI: 10.1093/annonc/mdw574.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Motevalli S, Safari M. A study of hydrogen isotopes fuel control by wall effect in magnetic fusion devices. Fusion Engineering and Design 2016. [DOI: 10.1016/j.fusengdes.2016.07.019] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Darvishi Cheshmeh Soltani R, Jorfi S, Safari M, Rajaei MS. Enhanced sonocatalysis of textile wastewater using bentonite-supported ZnO nanoparticles: Response surface methodological approach. J Environ Manage 2016; 179:47-57. [PMID: 27173890 DOI: 10.1016/j.jenvman.2016.05.001] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/04/2016] [Revised: 05/01/2016] [Accepted: 05/02/2016] [Indexed: 06/05/2023]
Abstract
The scope of this study was the use of bentonite as the carrier of ZnO nanoparticles for enhancing the sonocatalytic decolorization of Basic Red 46 (BR46) in the aqueous phase. The results demonstrated the higher sonocatalytic activity of bentonite-supported ZnO nanoparticles (BSZNs) in comparison with the suspended ZnO nanoparticles (SZNs). The particle size of BSZNs (5-40 nm) was lower than that of SZNs (20-120 nm). Due to the immobilization of ZnO nanoparticles, a specific surface area of 80.6 m(2)/g was obtained for the BSZNs, which was higher than the specific surface area of the raw bentonite (42.2 m(2)/g). Optimization of the process via response surface methodology (RSM) based on central composite design (CCD) showed the maximum sonocatalytic decolorization efficiency (%) of 89.92% in which the initial dye concentration, the ZnO/bentonite ratio, the sonocatalyst dosage, and the initial pH were 6 mg/L, 0.3, 2.5 g/L and 9, respectively. The byproducts generated during the sonocatalysis of BR46 over BSZNs were identified using gas chromatography-mass spectrometry (GC-MS) analysis. From an application viewpoint, the sonocatalysis of real textile wastewater resulted in a COD removal efficiency (%) of about 44% within a reaction time of 150 min.
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Affiliation(s)
| | - Sahand Jorfi
- Department of Environmental Health Engineering, School of Public Health, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran; Environmental Technologies Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Mahdi Safari
- Environmental Health Research Center, Kurdistan University of Medical Sciences, Sanandaj, Iran; Department of Environmental Health Engineering, School of Health, Kurdistan University of Medical Sciences, Sanandaj, Iran
| | - Mohammad-Sadegh Rajaei
- Department of Environmental Health Engineering, School of Health, Arak University of Medical Sciences, Arak, Iran
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Darvishi Cheshmeh Soltani R, Safari M. Periodate-assisted pulsed sonocatalysis of real textile wastewater in the presence of MgO nanoparticles: Response surface methodological optimization. Ultrason Sonochem 2016; 32:181-190. [PMID: 27150759 DOI: 10.1016/j.ultsonch.2016.03.011] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/17/2016] [Revised: 03/08/2016] [Accepted: 03/09/2016] [Indexed: 05/03/2023]
Abstract
The improvement of sonocatalytic treatment of real textile wastewater in the presence of MgO nanoparticles was the main goal of the present study. According to our preliminary results, the application of pulse mode of sonication, together with the addition of periodate ions, produced the greatest sonocatalytic activity and consequently, the highest chemical oxygen demand (COD) removal efficiency (73.95%) among all the assessed options. In the following, pulsed sonocatalysis of real textile wastewater in the presence of periodate ions was evaluated response surface methodologically on the basis of central composite design. Accordingly, a high correlation coefficient of 0.95 was attained for the applied statistical strategy to optimize the process. As results, a pulsed sonication time of 141min, MgO dosage of 2.4g/L, solution temperature of 314K and periodate concentration of 0.11M gave the maximum COD removal of about 85%. Under aforementioned operational conditions, the removal of total organic carbon (TOC) was obtained to be 63.34% with the reaction rate constant of 7.1×10(-3)min(-1) based on the pseudo-first order kinetic model (R(2)=0.99). Overall, periodate-assisted pulsed sonocatalysis over MgO nanoparticles can be applied as an efficient alternative process for treating and mineralizing real textile wastewater with good reusability potential.
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Affiliation(s)
| | - Mahdi Safari
- Department of Environmental Health Engineering, School of Health, Kurdistan University of Medical Sciences, Sanandaj, Iran; Kurdistan Environmental Health Research Center, Kurdistan University of Medical Sciences, Sanandaj, Iran
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Safari M, Kwok CY, Nazar LF. Transport Properties of Polysulfide Species in Lithium-Sulfur Battery Electrolytes: Coupling of Experiment and Theory. ACS Cent Sci 2016; 2:560-8. [PMID: 27610417 PMCID: PMC4999976 DOI: 10.1021/acscentsci.6b00169] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/09/2016] [Indexed: 05/05/2023]
Abstract
A comprehensive experimental and theoretical analysis of the isothermal transport of species for the two model ternary-electrolytes with LiTFSI-Li2S4/dioxolane (DOL)-dimethoxyethane (DME) and LiTFSI-Li2S6/DOL-DME formulations is presented. An unambiguous picture of the polysulfide's mobility is set forth after a detailed investigation of the macroscopic transference number and diffusion coefficients. The new findings of incongruent diffusion for Li2S4 species and high significance of cross-term diffusion coefficients reformulate a fledgling view of the prevalent redox-shuttle phenomena. The practical implications of this complex mechanism are discussed in detail.
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Maleki A, Safari M, Rezaee R, Cheshmeh Soltani RD, Shahmoradi B, Zandsalimi Y. Photocatalytic degradation of humic substances in the presence of ZnO nanoparticles immobilized on glass plates under ultraviolet irradiation. SEP SCI TECHNOL 2016. [DOI: 10.1080/01496395.2016.1213746] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/07/2022]
Affiliation(s)
- Afshin Maleki
- Environmental Health Research Center, Kurdistan University of Medical Sciences, Sanandaj, Iran
| | - Mahdi Safari
- Environmental Health Research Center, Kurdistan University of Medical Sciences, Sanandaj, Iran
- Department of Environmental Health, School of Health, Kurdistan University of Medical Sciences, Sanandaj, Iran
| | - Reza Rezaee
- Environmental Health Research Center, Kurdistan University of Medical Sciences, Sanandaj, Iran
| | | | - Behzad Shahmoradi
- Environmental Health Research Center, Kurdistan University of Medical Sciences, Sanandaj, Iran
| | - Yahya Zandsalimi
- Environmental Health Research Center, Kurdistan University of Medical Sciences, Sanandaj, Iran
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Darvishi Cheshmeh Soltani R, Safari M, Mashayekhi M. Sonocatalyzed decolorization of synthetic textile wastewater using sonochemically synthesized MgO nanostructures. Ultrason Sonochem 2016; 30:123-131. [PMID: 26615797 DOI: 10.1016/j.ultsonch.2015.11.018] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/25/2015] [Revised: 11/17/2015] [Accepted: 11/18/2015] [Indexed: 06/05/2023]
Abstract
The present study focused on the synthesis of nanostructured MgO via sonochemical method and its application as sonocatalyst for the decolorization of Basic Red 46 (BR46) dye under ultrasonic irradiation. The sonocatalyst was characterized using X-ray diffraction (XRD) and field emission scanning electron microscopy (FE-SEM) equipped with energy dispersive X-ray microanalysis (EDX). In the following, the sonocatalytic removal of the dye under different operational conditions was evaluated kinetically on the basis of pseudo first-order kinetic model. The reaction rate of sonocatalyzed decolorization using MgO nanostructures (12.7 × 10(-3) min(-1)) was more efficient than that of ultrasound alone (2.0 × 10(-3) min(-1)). The increased sonocatalyst dosage showed better sonocatalytic activity but the application of excessive dosage should be avoided. The presence of periodate ions substantially increased the decolorization rate from 14.76 × 10(-3) to 33.4 × 10(-3) min(-1). Although the application of aeration favored the decolorization rate (17.8 × 10(-3) min(-1)), the addition of hydrogen peroxide resulted in a considerable decrease in the decolorization rate (9.5 × 10(-3) min(-1)) due to its scavenging effects at specific concentrations. Unlike alcoholic compounds, the addition of phenol had an insignificant scavenging effect on the sonocatalysis. A mineralization rate of 7.4 × 10(-3) min(-1) was obtained within 120 min. The intermediate byproducts were also detected using GC-MS analysis.
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Affiliation(s)
| | - Mahdi Safari
- Environmental Health Research Center, Kurdistan University of Medical Sciences, Sanandaj, Iran; Department of Environmental Health Engineering, School of Health, Kurdistan University of Medical Sciences, Sanandaj, Iran
| | - Masumeh Mashayekhi
- Department of Environmental Health Engineering, School of Health, Arak University of Medical Sciences, Arak, Iran
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Maleki A, Safari M, Shahmoradi B, Zandsalimi Y, Daraei H, Gharibi F. Photocatalytic degradation of humic substances in aqueous solution using Cu-doped ZnO nanoparticles under natural sunlight irradiation. Environ Sci Pollut Res Int 2015; 22:16875-16880. [PMID: 26104905 DOI: 10.1007/s11356-015-4915-7] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/15/2015] [Accepted: 06/16/2015] [Indexed: 06/04/2023]
Abstract
In this study, Cu-doped ZnO nanoparticles were investigated as an efficient synthesized catalyst for photodegradation of humic substances in aqueous solution under natural sunlight irradiation. Cu-doped ZnO nanocatalyst was prepared through mild hydrothermal method and was characterized using FT-IR, powder XRD and SEM techniques. The effect of operating parameters such as doping ratio, initial pH, catalyst dosage, initial concentrations of humic substances and sunlight illuminance were studied on humic substances degradation efficiency. The results of characterization analyses of samples confirmed the proper synthesis of Cu-doped ZnO nanocatalyst. The experimental results indicated the highest degradation efficiency of HS (99.2%) observed using 1.5% Cu-doped ZnO nanoparticles at reaction time of 120 min. Photocatalytic degradation efficiency of HS in a neutral and acidic pH was much higher than that at alkaline pH. Photocatalytic degradation of HS was enhanced with increasing the catalyst dosage and sunlight illuminance, while increasing the initial HS concentration led to decrease in the degradation efficiency of HS. Conclusively, Cu-doped ZnO nanoparticles can be used as a promising and efficient catalyst for degradation of HS under natural sunlight irradiation.
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Affiliation(s)
- Afshin Maleki
- Environmental Health Research Center, Kurdistan University of Medical Sciences, Sanandaj, Iran
| | - Mahdi Safari
- Environmental Health Research Center, Kurdistan University of Medical Sciences, Sanandaj, Iran.
| | - Behzad Shahmoradi
- Environmental Health Research Center, Kurdistan University of Medical Sciences, Sanandaj, Iran
| | - Yahya Zandsalimi
- Environmental Health Research Center, Kurdistan University of Medical Sciences, Sanandaj, Iran
| | - Hiua Daraei
- Environmental Health Research Center, Kurdistan University of Medical Sciences, Sanandaj, Iran
| | - Fardin Gharibi
- Research Deputy, Kurdistan University of Medical Sciences, Sanandaj, Iran
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Darvishi Cheshmeh Soltani R, Safari M, Maleki A, Godini H, Mahmoudian MH, Pordel MA. Application of Nanocrystalline Iranian Diatomite in Immobilized Form for Removal of a Textile Dye. J DISPER SCI TECHNOL 2015. [DOI: 10.1080/01932691.2015.1058715] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Maleki A, Jebeli MA, Kalantar E, Daraei H, Davari B, Safari M. Inactivation of Pseudomonas aeruginosa by zinc oxide nanoparticles in aqueous solution. Antimicrob Resist Infect Control 2015. [PMCID: PMC4474845 DOI: 10.1186/2047-2994-4-s1-i6] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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Abstract
The aim of this work was to enhance the efficiency of a bioelectrochemical denitrification process using a biocathode of carbon felt (CF)/multiwall carbon nanotube (MWCNT) composite. The efficiency of the bioelectrochemical denitrification was assessed as the function of various operational parameters, such as ORP, pH, current density, retention time and nitrate concentrations. Scanning electron microscope (SEM) images of the biocathode surfaces revealed a homogeneous distribution of the MWCNT on the CF matrix. Optimum ORP, pH, current density and retention time were -100 mV, 7.0, 15 mA/cm2 and 6 h, respectively. The highest nitrate removal efficiency at the optimum condition was 92.7% for CF/MWCNT. The reduction time for achieving the nitrate standard using CF/MWCNT was 4 h. It is proposed that the prepared nanocomposite will have the best biocathode properties in the bioelectrochemistry denitrification experiments.
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Affiliation(s)
- Abbas Rezaee
- a Department of Environmental Health, Faculty of Medical Sciences , Tarbiat Modares University , Tehran , Iran
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Abstract
A comprehensive and general kinetic model is developed for the oxygen reduction reaction in aprotic Li-O2 cells. The model is based on the competitive uptake of lithium superoxide by the surface and solution. A demonstrative kinetic study is provided to demystify the origin of curvature in Tafel plots as well as the current dependency and aberrant diversity of the nature and morphology of discharge products in these systems. Our results are general and extend to any system where solubilization of superoxide is favored, such as where phase-transfer catalysts play an important role.
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Affiliation(s)
- M Safari
- Department of Chemistry, University of Waterloo, 200 University Avenue West, Waterloo, Ontario N2L 3G1, Canada
| | - B D Adams
- Department of Chemistry, University of Waterloo, 200 University Avenue West, Waterloo, Ontario N2L 3G1, Canada
| | - L F Nazar
- Department of Chemistry, University of Waterloo, 200 University Avenue West, Waterloo, Ontario N2L 3G1, Canada
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Safari M, Rezaee A, Ayati B, Jonidi-Jafari A. Bio-electrochemical reduction of nitrate utilizing MWCNT supported on carbon base electrodes: A comparison study. J Taiwan Inst Chem Eng 2014. [DOI: 10.1016/j.jtice.2014.05.006] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Soltani RDC, Rezaee A, Khataee A, Safari M. Photocatalytic process by immobilized carbon black/ZnO nanocomposite for dye removal from aqueous medium: Optimization by response surface methodology. J IND ENG CHEM 2014. [DOI: 10.1016/j.jiec.2013.09.003] [Citation(s) in RCA: 98] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Ijadpanah-Saravy H, Safari M, Khodadadi-Darban A, Rezaei A. Synthesis of Titanium Dioxide Nanoparticles for Photocatalytic Degradation of Cyanide in Wastewater. ANAL LETT 2014. [DOI: 10.1080/00032719.2014.880170] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Yousefi M, Safari M, Torbati MB, Amanzadeh A. In vitro anti-proliferative activity of novel hexacoordinated triphenyltin(IV) trifluoroacetate containing a bidentate N-donor ligand. J STRUCT CHEM+ 2014. [DOI: 10.1134/s0022476614010168] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Safari M, Farkhondeh M, Pritzker M, Fowler M, Han T, Chen SK. Simulation of lithium iron phosphate lithiation/delithiation: Limitations of the core–shell model. Electrochim Acta 2014. [DOI: 10.1016/j.electacta.2013.10.159] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Safari M, Rezaee A, Ayati B, Jonidi-Jafari A. Simultaneous removal of nitrate and its intermediates by use of bipolar electrochemistry. Res Chem Intermed 2013. [DOI: 10.1007/s11164-013-1279-9] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Seraj B, Ramezani G, Ghadimi S, Mosharrafian SH, Motahhary P, Safari M. In-vitro comparison of instrumentation time and cleaning capacity between endodontic handpiece and manual preparation techniques in primary molar teeth. Minerva Stomatol 2013; 62:17-22. [PMID: 23422680] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
AIM The aim of this study was to evaluate and compare the cleaning ability and instrumentation time of manual method and use of endodontic handpiece for preparation of primary molar teeth. METHODS Forty primary teeth canals were used in this experimental study. Access cavities were prepared and India ink was injected into the canals. The samples were divided into three groups according to the preparation technique. In the first group the root canals were manually instrumented by k_files. Endodontic handpiece (TEP-ER10, NSK, Japan) were used for canal preparation in the second group and the samples in the third group (control) were not instrumented. After preparing the canal, the teeth were cleared with methyl salicylate and the removal of India ink was measured in the cervical, middle and apical thirds. The instrumentation time was transcribed by chronometer. Statistical analysis was performed using Mann-Whitney and t-test. RESULTS There was no significant difference in cleaning capacity between the two techniques, but results of the first and second group differ from those of the control group. In fact, time taken for preparation was significantly shorter with endodontic handpiece system. CONCLUSION Seen the shorter working time of endodontic handpiece and the similar cleaning ability of the two techniques, the application of the endodontic handpiece is recommended for preparation of deciduous root canals during pulpectomy.
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Affiliation(s)
- B Seraj
- Department of Pediatric Dentistry, Tehran University of Medical Sciences, Tehran, Iran
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Yazdanpanah B, Safari M, Yazdanpanah S, Angha P, Karami M, Emadi M, Yazdanpanah S, Poorbehesht A. The effect of participatory community-based diabetes cares on the control of diabetes and its risk factors in western suburb of Yasouj, Iran. Health Educ Res 2012; 27:794-803. [PMID: 22907534 DOI: 10.1093/her/cys079] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
This study aimed to investigate whether a community-based participatory diabetes care program could efficiently improve diabetic care and reduce its risk factors. To induce a participatory approach, a local group was established in partnership with academics, local leaders, health providers and public representatives. The group conducted community needs assessment and priority setting process. Diabetes was identified as the first priority health problem in this area. A total of 2569 30- to 65-year-old residents were screened for diabetes and 405 of them took part in a 13-week nutrition education and physical exercise intervention. Out of 1336 high-risk individuals, 17% had fasting blood sugar (FBS) ≥126 mg/dl and 13.5% with FBS between 110 and 125 mg/dl. Percentages of participants with triglycerides (TG) ≥150 mg/dl and cholesterol ≥200 mg/dl were 33.8% and 23.5%, respectively. After completion of the intervention, the mean FBS, HbA1C, TG and cholesterol were decreased significantly. Although systolic and diastolic blood pressure and body mass index were decreased too, the differences were not statistically significant. The mean physical activity increased and consumption of fried foods and saturated oil decreased significantly. The results suggest that participatory community-based care could be a feasible model for control of diabetes and its risk factors.
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Affiliation(s)
- B Yazdanpanah
- School of Paramedicine, Yasouj University of Medical Sciences, 7591994799, Iran
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Abstract
Stem cell therapy is widely considered as a therapeutic approach for retinal degeneration. Retinal injury results in permanent visual disturbance or blindness. Repair of such damage by stem cells is one of the most feasible types of central nervous system repair. In this review, we consider how stem cells might be optimized for use as donor cells. We discuss the benefits of stem cells for transplantation in retinal degenerative disease. A wide range of stem cells from different sources is being investigated for the treatment of retinal degeneration. This study reviews the recent and old achievements about stem cells for retinal repair.
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Affiliation(s)
- M Safari
- Department of Anatomy, Semnan University of Medical Science, Semnan, Iran
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