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Mohebbi Najm Abad J, Farahbakhsh A, Mir M, Alizadeh R, Hekmatmanesh A. Urea-Self Powered Biosensors: A Predictive Evolutionary Model for Human Energy Harvesting. Sensors (Basel) 2023; 23:8180. [PMID: 37837010 PMCID: PMC10575137 DOI: 10.3390/s23198180] [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: 07/22/2023] [Revised: 08/20/2023] [Accepted: 09/26/2023] [Indexed: 10/15/2023]
Abstract
The objective of this study is to create a reliable predictive model for the electrochemical performance of self-powered biosensors that rely on urea-based biological energy sources. Specifically, this model focuses on the development of a human energy harvesting model based on the utilization of urea found in sweat, which will enable the development of self-powered biosensors. In the process, the potential of urea hydrolysis in the presence of a urease enzyme is employed as a bioreaction for self-powered biosensors. The enzymatic reaction yields a positive potential difference that can be harnessed to power biofuel cells (BFCs) and act as an energy source for biosensors. This process provides the energy required for self-powered biosensors as biofuel cells (BFCs). To this end, initially, the platinum electrodes are modified by multi-walled carbon nanotubes to increase their conductivity. After stabilizing the urease enzyme on the surface of the platinum electrode, the amount of electrical current produced in the process is measured. The optimal design of the experiments is performed based on the Taguchi method to investigate the effect of urea concentration, buffer concentration, and pH on the generated electrical current. A general equation is employed as a prediction model and its coefficients calculated using an evolutionary strategy. Also, the evaluation of effective parameters is performed based on error rates. The obtained results show that the established model predicts the electrical current in terms of urea concentration, buffer concentration, and pH with high accuracy.
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Affiliation(s)
- Javad Mohebbi Najm Abad
- Department of Computer Engineering, Quchan Branch, Islamic Azad University, Quchan 9479176135, Iran;
| | - Afshin Farahbakhsh
- Department of Chemical Engineering, Quchan Branch, Islamic Azad University, Quchan 9479176135, Iran;
| | - Massoud Mir
- Department of Mechanical Engineering, Quchan University of Technology, Quchan 9477177870, Iran;
| | - Rasool Alizadeh
- Department of Mechanical Engineering, Quchan Branch, Islamic Azad University, Quchan 9479176135, Iran;
| | - Amin Hekmatmanesh
- Laboratory of Intelligent Machines, LUT University, 53850 Lappeenranta, Finland
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Mesgarpour M, Abad JMN, Alizadeh R, Wongwises S, Doranehgard MH, Jowkar S, Karimi N. Predicting the effects of environmental parameters on the spatio-temporal distribution of the droplets carrying coronavirus in public transport - A machine learning approach. Chem Eng J 2022; 430:132761. [PMID: 34642569 PMCID: PMC8495004 DOI: 10.1016/j.cej.2021.132761] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/14/2021] [Revised: 09/21/2021] [Accepted: 09/29/2021] [Indexed: 05/25/2023]
Abstract
Human-generated droplets constitute the main route for the transmission of coronavirus. However, the details of such transmission in enclosed environments are yet to be understood. This is because geometrical and environmental parameters can immensely complicate the problem and turn the conventional analyses inefficient. As a remedy, this work develops a predictive tool based on computational fluid dynamics and machine learning to examine the distribution of sneezing droplets in realistic configurations. The time-dependent effects of environmental parameters, including temperature, humidity and ventilation rate, upon the droplets with diameters between 1 and 250 μ m are investigated inside a bus. It is shown that humidity can profoundly affect the droplets distribution, such that 10% increase in relative humidity results in 30% increase in the droplets density at the farthest point from a sneezing passenger. Further, ventilation process is found to feature dual effects on the droplets distribution. Simple increases in the ventilation rate may accelerate the droplets transmission. However, carefully tailored injection of fresh air enhances deposition of droplets on the surfaces and thus reduces their concentration in the bus. Finally, the analysis identifies an optimal range of temperature, humidity and ventilation rate to maintain human comfort while minimising the transmission of droplets.
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Affiliation(s)
- Mehrdad Mesgarpour
- Fluid Mechanics, Thermal Engineering and Multiphase Flow Research Lab. (FUTURE), Department of Mechanical Engineering, Faculty of Engineering, King Mongkut's University of Technology Thonburi (KMUTT), Bangmod, Bangkok 10140, Thailand
| | | | - Rasool Alizadeh
- Department of Mechanical Engineering, Quchan Branch, Islamic Azad University, Quchan, Iran
| | - Somchai Wongwises
- Fluid Mechanics, Thermal Engineering and Multiphase Flow Research Lab. (FUTURE), Department of Mechanical Engineering, Faculty of Engineering, King Mongkut's University of Technology Thonburi (KMUTT), Bangmod, Bangkok 10140, Thailand
- National Science and Technology Development Agency (NSTDA), Pathum Thani 12120, Thailand
| | - Mohammad Hossein Doranehgard
- Department of Civil and Environmental Engineering, School of Mining and Petroleum Engineering, University of Alberta, Edmonton, Alberta T6G 1H9, Canada
| | - Saeed Jowkar
- Aerospace Engineering Department, Sharif University of Technology 14588-89694, Iran
| | - Nader Karimi
- School of Engineering and Materials Science, Queen Mary University of London, London E1 4NS, United Kingdom
- James Watt School of Engineering, University of Glasgow, Glasgow G12 8QQ, United Kingdom
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Alizadeh R, Mohebbi Najm Abad J, Fattahi A, Mesgarpour M, Doranehgard MH, Xiong Q, Karimi N. Machine-Learning Enhanced Analysis of Mixed Biothermal Convection of Single Particle and Hybrid Nanofluids within a Complex Configuration. Ind Eng Chem Res 2021. [DOI: 10.1021/acs.iecr.1c03100] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- Rasool Alizadeh
- Department of Mechanical Engineering, Quchan Branch, Islamic Azad University, Quchan 94791-76135, Iran
| | - Javad Mohebbi Najm Abad
- Department of Computer Engineering, Quchan Branch, Islamic Azad University, Quchan 94791-76135, Iran
| | - Abolfazl Fattahi
- Department of Mechanical Engineering, University of Kashan, Kashan 87317-53153, Iran
| | - Mehrdad Mesgarpour
- Fluid Mechanics, Thermal Engineering and Multiphase Flow Research Lab. (FUTURE), Department of Mechanical Engineering, Faculty of Engineering, King Mongkut’s University of Technology Thonburi (KMUTT), Bangmod, Bangkok 10140, Thailand
| | - Mohammad Hossein Doranehgard
- Department of Civil and Environmental Engineering, School of Mining and Petroleum Engineering, University of Alberta, Edmonton, Alberta T6G 1H9, Canada
| | - Qingang Xiong
- State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, China
| | - Nader Karimi
- School of Engineering and Materials Science, Queen Mary University of London, London E1 4NS, United Kingdom
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Alizadeh R, Sharifzadeh SR. Pathogenesis, etiology and treatment of failed back surgery syndrome. Neurochirurgie 2021; 68:426-431. [PMID: 34543614 DOI: 10.1016/j.neuchi.2021.09.005] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [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: 12/11/2020] [Revised: 06/22/2021] [Accepted: 09/04/2021] [Indexed: 12/19/2022]
Abstract
Failed back surgery syndrome (FBSS) is associated with persistent lower back pain after and despite one or more surgical interventions. A number of factors underlie and maintain FBSS and successful management of pain chiefly depends on identifying them. Pharmacological, surgical, and non-surgical therapeutic measures are taken to treat the pain. Spinal cord stimulation and nerve stimulation have been widely practiced in this regard and enhanced pain reduction and patient satisfaction. In hernia and recurrent disc degeneration and sagittal imbalance, discectomy and/or fusion are indicated. The present review focuses on FBSS and its underlying components and on available treatment options.
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Affiliation(s)
- R Alizadeh
- Department of Anesthesiology and Intensive Care, School of Medicine, AJA University of Medical Sciences, Tehran, Iran
| | - S R Sharifzadeh
- Department of Orthopedic Surgery, School of Medicine, AJA University of Medical Science, Tehran, Iran.
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Mesgarpour M, Alizadeh R, Ameri A, Wongwises S, Heydari A. Numerical study and optimization of the new concept of a solar air heater with a closed-cycle heat recovery system. CHEM ENG COMMUN 2021. [DOI: 10.1080/00986445.2021.1928649] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Mehrdad Mesgarpour
- Fluid Mechanics, Thermal Engineering and Multiphase Flow Research Lab. (FUTURE), Department of Mechanical Engineering, Faculty of Engineering, King Mongkut's University of Technology Thonburi (KMUTT), Bangkok, Thailand
| | - Rasool Alizadeh
- Department of Mechanical Engineering, Quchan Branch, Islamic Azad University, Quchan, Iran
| | - Abolhasan Ameri
- Department of Chemical Engineering, Shiraz Branch, Islamic Azad University, Shiraz, Iran
| | - Somchai Wongwises
- Fluid Mechanics, Thermal Engineering and Multiphase Flow Research Lab. (FUTURE), Department of Mechanical Engineering, Faculty of Engineering, King Mongkut's University of Technology Thonburi (KMUTT), Bangkok, Thailand
- National Science and Technology Development Agency (NSTDA), Pathum Thani, Thailand
| | - Ali Heydari
- Department of Mechanical Engineering, University of Torbat Heydarieh, Khorasan Razavi, Iran
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Mesgarpour M, Abad JMN, Alizadeh R, Wongwises S, Doranehgard MH, Ghaderi S, Karimi N. Prediction of the spread of Corona-virus carrying droplets in a bus - A computational based artificial intelligence approach. J Hazard Mater 2021; 413:125358. [PMID: 33611042 PMCID: PMC8055577 DOI: 10.1016/j.jhazmat.2021.125358] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [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: 01/06/2021] [Revised: 02/04/2021] [Accepted: 02/05/2021] [Indexed: 05/05/2023]
Abstract
Public transport has been identified as high risk as the corona-virus carrying droplets generated by the infected passengers could be distributed to other passengers. Therefore, predicting the patterns of droplet spreading in public transport environment is of primary importance. This paper puts forward a novel computational and artificial intelligence (AI) framework for fast prediction of the spread of droplets produced by a sneezing passenger in a bus. The formation of droplets of salvia is numerically modelled using a volume of fluid methodology applied to the mouth and lips of an infected person during the sneezing process. This is followed by a large eddy simulation of the resultant two phase flow in the vicinity of the person while the effects of droplet evaporation and ventilation in the bus are considered. The results are subsequently fed to an AI tool that employs deep learning to predict the distribution of droplets in the entire volume of the bus. This combined framework is two orders of magnitude faster than the pure computational approach. It is shown that the droplets with diameters less than 250 micrometers are most responsible for the transmission of the virus, as they can travel the entire length of the bus.
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Affiliation(s)
- Mehrdad Mesgarpour
- Fluid Mechanics, Thermal Engineering and Multiphase Flow Research Lab. (FUTURE), Department of Mechanical Engineering, Faculty of Engineering, King Mongkut's University of Technology Thonburi (KMUTT), Bangmod, Bangkok 10140, Thailand
| | | | - Rasool Alizadeh
- Department of Mechanical Engineering, Quchan Branch, Islamic Azad University, Quchan, Iran
| | - Somchai Wongwises
- Fluid Mechanics, Thermal Engineering and Multiphase Flow Research Lab. (FUTURE), Department of Mechanical Engineering, Faculty of Engineering, King Mongkut's University of Technology Thonburi (KMUTT), Bangmod, Bangkok 10140, Thailand; National Science and Technology Development Agency (NSTDA), Pathum Thani 12120, Thailand
| | - Mohammad Hossein Doranehgard
- Department of Civil and Environmental Engineering, School of Mining and Petroleum Engineering, University of Alberta, Edmonton, Alberta T6G 1H9, Canada
| | - Saeidreza Ghaderi
- Department of General Surgery, Shahid Modarres Hospital, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Nader Karimi
- School of Engineering and Materials Science, Queen Mary University of London, London E1 4NS, United Kingdom; James Watt School of Engineering, University of Glasgow, Glasgow G12 8QQ, United Kingdom.
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Mohammadiun M, Mohammadiun H, Alizadeh R, Mesgarpour M, Younesian A, Jowkar S. The effect of variable temperature and location on relative thermal conductivity (RTC) on the heat pipe in the presence of AL2O3 nanoparticles: Numerical and optimization approaches. J Taiwan Inst Chem Eng 2021. [DOI: 10.1016/j.jtice.2021.04.050] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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Mesgarpour M, Wongwises S, Alizadeh R, Mohammadiun H, Mohammadiun M. The comparative investigation of three approaches to modeling the natural convection heat transfer: A case studyon conical cavity filled with Al2O3 nanoparticles. J Taiwan Inst Chem Eng 2021. [DOI: 10.1016/j.jtice.2021.04.027] [Citation(s) in RCA: 3] [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: 10/21/2022]
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9
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Alizadeh R, Abad JMN, Ameri A, Mohebbi MR, Mehdizadeh A, Zhao D, Karimi N. A machine learning approach to the prediction of transport and thermodynamic processes in multiphysics systems - heat transfer in a hybrid nanofluid flow in porous media. J Taiwan Inst Chem Eng 2021. [DOI: 10.1016/j.jtice.2021.03.043] [Citation(s) in RCA: 94] [Impact Index Per Article: 31.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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Jalessi M, Bagheri SH, Azad Z, Firouzabadi FD, Amini E, Alizadeh R, Chaibakhsh S, Ghalehbaghi B, Hopkins C, Farhadi M. The outcome of olfactory impairment in patients with otherwise paucisymptomatic coronavirus disease 2019 during the pandemic. J Laryngol Otol 2021; 135:426-435. [PMID: 33883051 PMCID: PMC8111181 DOI: 10.1017/s0022215121001110] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/02/2021] [Indexed: 01/08/2023]
Abstract
OBJECTIVE This study aimed to measure the duration and recovery rate of olfactory loss in patients complaining of recent smell loss as their prominent symptom during the coronavirus disease 2019 outbreak. METHOD This was a prospective telephone follow-up observational study of 243 participants who completed an online survey that started on 12 March 2020. RESULTS After a mean of 5.5 months from the loss of smell onset, 98.3 per cent of participants reported improvement with a 71.2 per cent complete recovery rate after a median of 21 days. The chance of complete recovery significantly decreased after 131 days from the onset of loss of smell (100 per cent sensitive and 97.7 per cent specific). Younger age and isolated smell loss were associated with a rapid recovery, whereas accompanying rhinological and gastrointestinal symptoms were associated with longer loss of smell duration. CONCLUSION Smell loss, occurring as a prominent symptom during the coronavirus disease 2019 pandemic, showed a favourable outcome. However, after 5.5 months from the onset, around 10 per cent of participants still complained of moderate or severe hyposmia.
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Affiliation(s)
- M Jalessi
- Skull Base Research Centre, Tehran, Iran
| | - S H Bagheri
- ENT Department and Head and Neck Research Centre, Tehran, Iran
| | - Z Azad
- Skull Base Research Centre, Tehran, Iran
| | - F D Firouzabadi
- ENT Department and Head and Neck Research Centre, Tehran, Iran
| | - E Amini
- Skull Base Research Centre, Tehran, Iran
| | - R Alizadeh
- ENT Department and Head and Neck Research Centre, Tehran, Iran
| | - S Chaibakhsh
- Eye Research Centre, The Five Senses Health Institute, Hazrat Rasoul Hospital, Iran University of Medical Sciences, Tehran, Iran
| | - B Ghalehbaghi
- ENT Department and Head and Neck Research Centre, Tehran, Iran
| | - C Hopkins
- Guy's and St Thomas’ Hospital, King's College, London, UK
| | - M Farhadi
- ENT Department and Head and Neck Research Centre, Tehran, Iran
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Mohebbi Najm Abad J, Alizadeh R, Fattahi A, Doranehgard MH, Alhajri E, Karimi N. Analysis of transport processes in a reacting flow of hybrid nanofluid around a bluff-body embedded in porous media using artificial neural network and particle swarm optimization. J Mol Liq 2020. [DOI: 10.1016/j.molliq.2020.113492] [Citation(s) in RCA: 41] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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12
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Zou L, Dworschak A, Alizadeh R, Kamrava S, Alwashahi M, Bock M, Boesveldt S, Singh B, Brusevold I, Voznessenskaya V, Hummel T, Schriever V. “U-Sniff” - the international odor identification test for children: an extension of its normative database and study of global reliability. Rhinology 2020; 58:471-476. [DOI: 10.4193/rhin19.355] [Citation(s) in RCA: 4] [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: 11/08/2022]
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Alizadeh R, Amani V, Alemohammad A, Shahbazi Z, Harms K. Synthesis, Characterization, Crystal Structure Determination and Luminescence Study of New Linear Zn(II) Coordination Polymers with 4,7-Phenanthroline Ligand. RUSS J INORG CHEM+ 2019. [DOI: 10.1134/s0036023619040041] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Dowran R, Joharinia N, Safaei A, Bakhtiyarizadeh S, Alidadi Soleimani A, Alizadeh R, Mir-Shiri S, Sarvari J. No detection of EBV, BKV and JCV in breast cancer tissue samples in Iran. BMC Res Notes 2019; 12:171. [PMID: 30909983 PMCID: PMC6434965 DOI: 10.1186/s13104-019-4178-3] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [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: 01/21/2019] [Accepted: 03/11/2019] [Indexed: 12/13/2022] Open
Abstract
OBJECTIVE The most common cancer amongst women is breast cancer. Reports on the role of EBV, BKV, and JCV in the development of breast cancer are controversial. Hence, the aim of this study was to determine the frequency of EBV, BKV, and JCV in malignant breast tumors in comparison with benign ones. RESULTS A total of 300 breast biopsy tissues were included, of which 150 were malignant and 150 benign. After deparaffinization, tissues were subjected to DNA extraction. β-globin gene was amplified by PCR to evaluate the quality of extracted DNA. In house PCRs assay was performed to detect EBV, JCV, and BKV genome fragment. The mean age of malignant and benign groups was 45.0 ± 9.4 and 35.2 ± 12.1 years old. Out of 150 malignant samples, 146 were ductal, two lobular and two samples both invasive ductal and lobular carcinoma. In the benign group, 96, 52 and two samples were fibroadenoma, fibrocystic, and adenosis types, respectively. Genomic DNA fragment of EBV, BKV, and JCV was not found in any of the malignant and benign breast tissues. CONCLUSION According to our finding, there is the possibility that EBV, BKV, and JCV are not involved in breast cancer pathogenesis.
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Affiliation(s)
- Razieh Dowran
- Department of Bacteriology & Virology, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Negar Joharinia
- Department of Bacteriology & Virology, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Akbar Safaei
- Department of Pathology, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Sahar Bakhtiyarizadeh
- Department of Bacteriology & Virology, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Abootaleb Alidadi Soleimani
- Department of Bacteriology & Virology, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Rasool Alizadeh
- Department of Bacteriology & Virology, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Sara Mir-Shiri
- Department of Bacteriology & Virology, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Jamal Sarvari
- Department of Bacteriology & Virology, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran. .,Gastroenterohepatology Research Center, Shiraz University of Medical Sciences, Shiraz, Iran.
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Amani V, Alizadeh R, Khosrojerdy A. A Mercury(II) Mixed-Ligand Coordination Polymer Constructed from 4,7-Diphenyl- 1,10-Phenanthroline and Thiocyanate Ligands: Crystal Structure Studies, Spectroscopic Charactrization, And Thermal Analyses. J STRUCT CHEM+ 2019. [DOI: 10.1134/s0022476618080255] [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: 11/23/2022]
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Alizadeh R, Amani V, Seyfi S, Alemohammad A, Zarepoor F, Harms K. Synthesis, characterization, crystal structure determination and luminescence study of new linear coordination polymers based on Mercury(II), Cadmium(II) and 4,7-phenanthroline ligand. J Mol Struct 2019. [DOI: 10.1016/j.molstruc.2018.08.005] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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Salehi M, Zibafar E, Mahmoudi S, Hashemi SJ, Gatmiri SM, Gerami Shoar M, Dehghan Manshadi SA, Jahanbin B, Alizadeh R, Hosseinpour L, Ardi P, Daie Ghazvini R. First report of invasive pulmonary infection by Didymella microchlamydospora and successful treatment with voriconazole. Clin Microbiol Infect 2018; 25:392-393. [PMID: 30391584 DOI: 10.1016/j.cmi.2018.10.018] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2018] [Revised: 10/20/2018] [Accepted: 10/23/2018] [Indexed: 10/27/2022]
Affiliation(s)
- M Salehi
- Department of Infectious Diseases and Tropical Medicine, Imam-Khomeini Hospital Complex, Tehran University of Medical Sciences, Tehran, Iran
| | - E Zibafar
- Department of Medical Parasitology and Mycology, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
| | - S Mahmoudi
- Department of Medical Parasitology and Mycology, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran; Students' Scientific Research Centre, Tehran University of Medical Sciences, Tehran, Iran
| | - S J Hashemi
- Department of Medical Parasitology and Mycology, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
| | - S M Gatmiri
- Nephrology Research Centre, Tehran University of Medical Sciences, Tehran, Iran
| | - M Gerami Shoar
- Department of Medical Parasitology and Mycology, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
| | - S A Dehghan Manshadi
- Department of Infectious Diseases and Tropical Medicine, Imam-Khomeini Hospital Complex, Tehran University of Medical Sciences, Tehran, Iran
| | - B Jahanbin
- Cancer Research Institute, Pathology Department, Tehran University of Medical Sciences, Tehran, Iran
| | - R Alizadeh
- Department of Infectious Diseases and Tropical Medicine, Imam-Khomeini Hospital Complex, Tehran University of Medical Sciences, Tehran, Iran
| | - L Hosseinpour
- Department of Medical Parasitology and Mycology, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
| | - P Ardi
- Department of Medical Parasitology and Mycology, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
| | - R Daie Ghazvini
- Department of Medical Parasitology and Mycology, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran.
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Seyfi S, Alizadeh R, Darvish Ganji M, Amani V. Synthesis, spectral and luminescence study, crystal structure determination and DFT calculation of binuclear palladium(II) complexes. Spectrochim Acta A Mol Biomol Spectrosc 2018; 190:298-311. [PMID: 28941414 DOI: 10.1016/j.saa.2017.09.024] [Citation(s) in RCA: 12] [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] [Subscribe] [Scholar Register] [Received: 06/10/2017] [Revised: 08/18/2017] [Accepted: 09/12/2017] [Indexed: 06/07/2023]
Abstract
Binuclear palladium(II) complexes with metal-metal (d8-d8) bonding interaction were synthesized by reactions of the 1-methyl-1H-1,2,3,4-tetrazole-5-thiol (Hmtzt) or a mixture of Hmtzt and 1,3-propanediamine (1,3-pda) ligands. Complex [Pd2(μ-mtzt)4]·2CH3CN (1) was synthesized by the reaction of Pd(OAc)2 with Hmtzt dissolved in acetonitrile and complex [Pd2(μ-mtzt)2(mtzt)2(1,3-pda)] (2) was synthesized by reaction of a mixture of Hmtzt and 1,3-propanediamine (dissolved in methanol) with PdCl2 (dissolved in acetonitrile) and were identified through elemental analysis, IR, UV-Vis, 1H NMR, luminescence spectroscopy as well as single-crystal X-ray diffraction method. A single-crystal of complex 1 shows that two Pd(II) centers are linked together by four bridging tetrazole ligands providing a paddle wheel-like arrangement. Also a crystal structure of complex 2 shows that this complex possesses a symmetric structure in which one Pd atom is tetra-coordinated by four sulfur atoms to forms PdS4 and other Pd atom is tetra-coordinated by four nitrogen to forms PdN4 coordination sphere. Density functional theory (DFT) was performed in this study for the Hmtzt ligand and binuclear palladium(II) complexes (1) and (2). The DFT calculation shows PdII-PdII bond lengths of 2.831 and 3.086Å in complex 1 and 2, respectively which are close to the observed bond lengths of 2.802(11) and 3.0911(17)Å from single-crystal X-ray structure. The optimized geometry of the complexes is shown good agreement by X-ray data. Structural properties and molecular descriptors including bond lengths, bond angles, chemical hardness, dipole moment, HOMO-LUMO energy levels, electron transfer were analyzed. The IR spectroscopy was performed using VEDA4 software and UV-Vis spectra were analyzed using time-dependent density functional theory (TD-DFT) method. The theoretical and experimental data were also compared with each other.
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Affiliation(s)
- S Seyfi
- School of Chemistry, Damghan University, P.O. Box 36715-364, Damghan, Iran
| | - R Alizadeh
- School of Chemistry, Damghan University, P.O. Box 36715-364, Damghan, Iran.
| | - M Darvish Ganji
- Department of Nanochemistry, Faculty of Pharmaceutical Chemistry, Pharmaceutical Sciences Branch, Islamic Azad University (IAUPS), Tehran, Iran.
| | - V Amani
- Department of Chemistry, Farhangian University, Tehran, Iran
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Alizadeh R, Rahimi AB, Karimi N, Alizadeh A. On the Hydrodynamics and Heat Convection of an Impinging External Flow Upon a Cylinder with Transpiration and Embedded in a Porous Medium. Transp Porous Media 2017. [DOI: 10.1007/s11242-017-0942-9] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Seyfi S, Alizadeh R, Ganji MD, Amani V. Palladium(II) complexes with 1,2,4-triazole derivative & ethylene diamine as ligands, synthesis, characterization, luminesence study & crystal structure determination. Polyhedron 2017. [DOI: 10.1016/j.poly.2017.06.034] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [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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Naruse Y, Kece F, De Riva M, Watanabe M, Wijnmaalen A, Alizadeh R, Schalij M, Zeppenfeld K, Trines S. P1715Clinical impact of non-fluoroscopic catheter tracking system on radiation exposure during pulmonary vein isolation. Europace 2017. [DOI: 10.1093/ehjci/eux161.025] [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: 11/14/2022] Open
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Rouzbahani F, Alizadeh R. Temperature-dependent viscosity effects on free convection flow over a vertical moving cylinder with constant axial velocity under consideration of radial magnetohydrodynamic. J Fundam and Appl Sci 2016. [DOI: 10.4314/jfas.8vi2s.56] [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: 11/17/2022] Open
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Zarei K, Alinejad M, Alizadeh R. Simultaneous voltammetric determination of Mo(VI) and W(VI) by adsorptive differential pulse stripping method using adaptive neuro-fuzzy inference system. J Anal Chem 2013. [DOI: 10.1134/s1061934813100134] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Alizadeh R, Hooshyar H, Bandehpor M, Arbabi M, Kazemi F, Talari A, Kazemi B. Detection of drug resistance gene in cutaneous leishmaniasis by PCR in some endemic areas of iran. Iran Red Crescent Med J 2011; 13:863-7. [PMID: 22737430 PMCID: PMC3371903] [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] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/12/2011] [Accepted: 09/19/2011] [Indexed: 11/07/2022]
Abstract
BACKGROUND Cutaneous leishmaniasis is still a health problem in many rural and urban regions of Iran and drug resistance has emerged as a major impediment in the treatment of leishmaniasis. This study aims to determine the drug resistance gene in cutaneous leishmaniasis by PCR in some endemic areas of Iran. METHODS Ninety seven samples were collected from ulcers of leishmaniasis patients from some endemic areas of Iran. The Giemsa stained samples were examined microscopically and cultured in NNN and RPMI 1640 mediums for parasite detection. After DNA extraction, PCR was done by a pair of specific primers. For detection of mutation in DNA, first PCR products were electrophoresed on CSGE gel. The suspected samples were compared by sequencing and RFLP results were demonstrated. Comparison of DNA derived from a wild type cell and mutant cell was undertaken by CSGE and sequencing methods. RESULTS Among 90 isolates (92.8%) examined for detection of mutation in gene with CSGE and RFLP, 10 (11.1%) revealed a disorder in sequencing selection for unresponsive to drug. CONCLUSION Drug resistance in cutaneous leishmaniasis to sodium stiboglocanat is probably due to a mutation in a genome. A field study is needed to determine the distribution of drug resistance and other gene mutations involved in unresponsiveness to drugs in leishmaniasis endemic areas of Iran.
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Affiliation(s)
- R Alizadeh
- Department of Parasitology, School of Medicine, Kashan University of Medical Sciences, Kashan, Iran
| | - H Hooshyar
- Department of Parasitology, School of Medicine, Kashan University of Medical Sciences, Kashan, Iran,Correspondence: Hossein Hooshyar, PhD, Department of Parasitology, School of Medicine, Kashan University of Medical Sciences, Kashan, Iran. Tel.: +98-361-5550021, Fax: +98-361-5551112, E-mail:
| | - M Bandehpor
- Cellular and Molecular Biology Research Center, Shaheed Beheshti University of Medical Sciences, Tehran, Iran
| | - M Arbabi
- Department of Parasitology, School of Medicine, Kashan University of Medical Sciences, Kashan, Iran
| | - F Kazemi
- Department of Parasitology, School of Medicine, Kashan University of Medical Sciences, Kashan, Iran
| | - A Talari
- Department of Parasitology, School of Medicine, Kashan University of Medical Sciences, Kashan, Iran
| | - B Kazemi
- Cellular and Molecular Biology Research Center, Shaheed Beheshti University of Medical Sciences, Tehran, Iran
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Najafi NM, Alizadeh R, Talebpour Z, Ghassempour AR. 31P NMR and computer simulations of the structure of trichlorfon and its derivatives. J STRUCT CHEM+ 2011. [DOI: 10.1134/s002247661104010x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Abbasi M, Alizadeh R, Abolhassani F, Amidi F, Ragerdi KI, Fazelipour S, Hoshino Y, Sato E, Dehpour AR. Effect of Aminoguanidine in Sperm DNA Fragmentation In Varicocelized Rats. Reprod Sci 2011; 18:545-50. [PMID: 21285452 DOI: 10.1177/1933719110393028] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Affiliation(s)
- M. Abbasi
- Department of Anatomy, School of Medicine, Tehran University of Medical Sciences
| | - R. Alizadeh
- Department of Anatomy, School of Medicine, Tehran University of Medical Sciences
| | - F. Abolhassani
- Department of Anatomy, School of Medicine, Tehran University of Medical Sciences
| | - F. Amidi
- Department of Anatomy, School of Medicine, Tehran University of Medical Sciences
| | - Kashani I. Ragerdi
- Department of Anatomy, School of Medicine, Tehran University of Medical Sciences
| | - S. Fazelipour
- Department of Anatomy, Islamic Azad University Central Tehran Branch, Tehran, Iran
| | - Y. Hoshino
- Laboratory of Animal Reproduction, Graduate School of Agriculture Science, Tohoko University, Sendai, Japan
| | - E. Sato
- Laboratory of Animal Reproduction, Graduate School of Agriculture Science, Tohoko University, Sendai, Japan
| | - A. R. Dehpour
- Department of Pharmacology, School of Medicine, Tehran University of Medical Sciences
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Abbasi M, Alizadeh R, Abolhassani F, Amidi F, Hassanzadeh G, Ejtemaei Mehr S, Dehpour A. Aminoguanidine Improves Epididymal Sperm Parameters in Varicocelized Rats. Urol Int 2011; 86:302-6. [DOI: 10.1159/000322154] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2009] [Accepted: 02/12/2010] [Indexed: 11/19/2022]
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Kazemi F, Hooshyar H, Zareikar B, Bandehpour M, Arbabi M, Talari S, Alizadeh R, Kazemi B. Study on ITS1 Gene of Iranian Trichomonas vaginalis by Molecular Methods. Iran J Parasitol 2010; 5:9-14. [PMID: 22347260 PMCID: PMC3279855] [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] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/25/2010] [Accepted: 10/18/2010] [Indexed: 11/16/2022]
Abstract
BACKGROUND Trichomoniasis is a worldwide protozoan parasitic disease and metronidazole is a choice drug for its treatment. Because of disease importance in public health and its controversial ideas about the prevalence of drug resistance, this study was carried out. METHODS Fifty-two suspected vaginal samples were collected from 2006 to 2007 in Gynecology Maryam Hospital, Tehran, Iran. All isolates were examined by microscopic, culture and PCR techniques. The PCR products were analyzed by RFLP and CSGE methods and two suspected samples were sequenced. RESULTS Trichomonas vaginalis was identified from all 52 samples. Of 52 isolates, 45 samples were successfully cultured and amplified by PCR except one. Seven were positive only by PCR. Finally, ITS1 fragment was successfully amplified in 51 of 52. CSGE analysis and PCR products digestion by MspI followed by sequencing showed nucleotide mutation at position 209 (C209T) of the ITS1 fragment in two (3.9%) of them. CONCLUSION The results showed mutation in ITS1 fragment of T. vaginalis in two (3.9%) of Iranian isolates which may be related to metronidazole resistance.
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Affiliation(s)
- F Kazemi
- Parasitology Dept., School of Medicine, Kashan University of Medical Sciences, Kashan, Iran
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Vuilleumier N, Bratt J, Alizadeh R, Jogestrand T, Hafström I, Frostegård J. Anti-apoA-1 IgG and oxidized LDL are raised in rheumatoid arthritis (RA): potential associations with cardiovascular disease and RA disease activity. Scand J Rheumatol 2010; 39:447-53. [PMID: 20604674 DOI: 10.3109/03009741003742755] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
OBJECTIVE To determine whether emerging cardiovascular risk factors such as anti-apolipoprotein A-1 (anti-apoA-1) immunoglobulin (Ig)G and oxidized low density lipoprotein (oxLDL) are associated with cardiovascular disease (CVD), carotid intima-media thickness (IMT), and disease activity in rheumatoid arthritis (RA). METHOD We determined the aforementioned associations in 69 RA patients with disease duration of 5 years and 46 controls matched by age, sex, and smoking status. Anti-apoA-1 IgG and oxLDL were measured by enzyme-linked immunosorbent assay (ELISA). Carotid arteries were examined by ultrasound. Disease Activity Score calculated on 28 joints (DAS28) was used to assess disease activity. RESULTS CVD prevalence was higher among RA patients than controls (17% vs. 2%, p = 0.01) but there was no difference in IMT (median: 0.67 vs. 0.66, p = 0.33). RA patients had a higher anti-apoA-1 IgG prevalence than controls (20% vs. 0%, p = 0.001). Anti-apoA-1 IgG and oxLDL levels were higher in cases than controls [median: 0.33 vs. 0.175 optical density (OD), p = 0.03; and 121 vs. 37.2 U/L, p = 0.0001, respectively]. Anti-apoA-1 IgG-positive patients had higher levels of oxLDL (median: 140.5 vs. 112 U/L, p = 0.01) than those tested negative. Receiver operating characteristic (ROC) curve analysis showed that only anti-apoA-1 IgG was a modest but significant predictor of CVD [area under the curve (AUC) = 0.65, p = 0.03] in RA patients. oxLDL was significantly associated with RA disease activity, whereas anti-apoA-1 IgG was not. CONCLUSIONS Anti-apoA-1 IgG could be a marker of CVD in RA, whereas oxLDL levels seem to reflect RA disease activity. Other causes of CVD than a general increase in atherosclerosis (as determined by IMT measurements) including plaque stability may therefore be of importance to explain the increased incidence of CVD in RA.
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Affiliation(s)
- N Vuilleumier
- Department of Rheumatology, Karolinska Institutet at Karolinska University Hospital Huddinge, Stockholm, Sweden
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Hosseinibalam F, Hassanzadeh S, Alizadeh R. Analysis and assessment of ground-level ozone measured at two stations in Tehran. Environ Monit Assess 2010; 165:275-281. [PMID: 19424817 DOI: 10.1007/s10661-009-0944-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/01/2008] [Accepted: 04/18/2009] [Indexed: 05/27/2023]
Abstract
In this study, variations of ambient ozone level are thoroughly analysed according to the monitored data in a mixed residential, commercial and industrial city, Tehran, based on considering the meteorological factors. Ozone as a pollutant shows typical annual, weekly and diurnal cycles. This analysis has shown that the ozone level concentrations were below the WHO guidelines in Tehran during 2000-2003. The relation between ozone level at two different stations (Aghdasieh and Fatemi) is found (r = 0.51). The ozone level response to meteorological parameters is investigated. The results suggest that the ozone level is affected (positively or negatively) by meteorological conditions, e.g. relative humidity, solar radiation, air temperature, wind speed and wind direction.
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Motallebnejad MM, Khanian M, Alizadeh R, Dabbaghian I. Community survey of knowledge about oral cancer in Babol: effect of an education intervention. East Mediterr Health J 2009; 15:1489-95. [PMID: 20218142 DOI: pmid/20218142] [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: 02/08/2023]
Abstract
A study in Babol, Islamic Republic of Iran, used a questionnaire to gather information on knowledge about oral cancer and its risk factors and to evaluate the efficacy of an educational brochure. From a community sample of 400 people, 76.0% had no knowledge of oral cancer. Mean knowledge score before the education intervention was 1.47 (standard deviation 3.40) out of 10. Knowledge about oral cancer was not associated with age, sex or education level but urban residents had better knowledge than rural residents. Mean knowledge score improved significantly by 5.92 (SD 3.30) at 1 month after the intervention among the 226 respondents who had read the brochure.
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Affiliation(s)
- M M Motallebnejad
- Department of Oral Medicine, Faculty of Dentistry, Babol University of Medical Sciences, Babol, Babol.
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Hassanzadeh S, Hosseinibalam F, Alizadeh R. Statistical models and time series forecasting of sulfur dioxide: a case study Tehran. Environ Monit Assess 2009; 155:149-155. [PMID: 18612833 DOI: 10.1007/s10661-008-0424-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/26/2008] [Accepted: 06/03/2008] [Indexed: 05/26/2023]
Abstract
This study performed a time-series analysis, frequency distribution and prediction of SO(2) levels for five stations (Pardisan, Vila, Azadi, Gholhak and Bahman) in Tehran for the period of 2000-2005. Most sites show a quite similar characteristic with highest pollution in autumn-winter time and least pollution in spring-summer. The frequency distributions show higher peaks at two residential sites. The potential for SO(2) problems is high because of high emissions and the close geographical proximity of the major industrial and urban centers. The ACF and PACF are nonzero for several lags, indicating a mixed (ARMA) model, then at Bahman station an ARMA model was used for forecasting SO(2). The partial autocorrelations become close to 0 after about 5 lags while the autocorrelations remain strong through all the lags shown. The results proved that ARMA (2,2) model can provides reliable, satisfactory predictions for time series.
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Affiliation(s)
- S Hassanzadeh
- Physics Department, University of Isfahan, Isfahan 81746, Iran.
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Shariati M, Parivar K, Oryan SH, Shakravi A, Alizadeh R, Salehi S. Effect of a new phenanthroline derivative on testicular tissue and serum testosterone concentration and its contraceptive affects on adult Balb/C mouse strain. Pak J Biol Sci 2007; 10:1910-3. [PMID: 19086559 DOI: 10.3923/pjbs.2007.1910.1913] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
In this research, the effect of 2, 6-diaminopyridinum as a new phenanthroline derivative was studied on the hypophysis-gonad axis, testicular tissue and sperm production in male Balb/C mice. Fifty adult male Balb/C mice were divided in five groups. First group was considered as untreated control. Saline was injected to second group and the remaining three groups received intraperitoneal injection of 15, 20 and 25 mg kg(-1) of 2, 6-diaminopyridinum every other day for 20 days. The LD50 was determined to be 35 mg kg(-1) body weight. The testicular tissues were studied morphologically and the serum concentration of FSH, LH and testosterone were measured. The results showed that 25 mg kg(-1) diaminopyridinum decreased the number of germ cells significantly and serum testosterone level with no change on FSH and LH levels. This study indicates that 25 mg kg(-1) of phenanthroline may directly affect testicular tissue causing a lower testosterone level and spermatogenesis in mice.
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Affiliation(s)
- M Shariati
- Islamic Azad University, Kazeroun Branch, Kazeroun, Iran
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Moghimi A, Alizadeh R, Shokrollahi A, Aghabozorg H, Shamsipur M, Shockravi A. First anionic 1,10-phenanthroline-2,9-dicarboxylate containing metal complex obtained from a novel 1:1 proton-transfer compound: synthesis, characterization, crystal structure, and solution studies. Inorg Chem 2003; 42:1616-24. [PMID: 12611530 DOI: 10.1021/ic025725d] [Citation(s) in RCA: 90] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
The new 1,10-phenanthroline containing 1:1 proton-transfer compound LH(2), [pyda.H(2)](2+)[phendc](2-), was synthesized from the reaction of 2,6-pyridinediamine, pyda, and 1,10-phenanthroline-2,9-dicarboxylic acid, phendc.H(2), and characterized by elemental analysis, ES-Ms, IR, (1)H, (13)C NMR, and UV/vis spectroscopies. Subsequently, the first example of [phendc](2)(-) containing anionic complex [pyda.H](2)[Co(phendc)(2)].10H(2)O, was prepared, using the above novel proton-transfer compound, and structurally characterized by single-crystal X-ray diffraction. The complex crystallizes in the space group P2(1)/n of the monoclinic system with four molecules in a unit cell of dimensions a = 11.877(3) A, b = 31.473(9) A, c = 12.915(4) A, and beta = 116.223(5) degrees. The structure has been refined to a final value for the crystallographic R factor of 0.0524 based on 9021 observed independent reflections. The complexation reactions of pyda, phendc.H(2), and LH(2) with H(+) as well as LH(2) with Co(II) in aqueous solution were investigated by potentiometric pH titrations, and the equilibrium constants for all major complexes formed are described. The results are presented in the form of distribution diagrams revealing the concentrations of individual complex species as a function of pH. The results revealed that, at a pH range of 5.2-6.2, the major complex species is [(pyda.H)](2)[Co(phendc)(2)], similar to the isolated crystalline complex.
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Affiliation(s)
- A Moghimi
- Department of Chemistry, Imam Hossein University, P.O. Box 16575-347, Tehran, Iran.
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