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Sasani E, Pakdel F, Khodavaisy S, Salehi M, Salami A, Sohrabi M, Aminishakiba P, Amirafzali I, Salami Khaneshan A. Mixed Aspergillosis and Mucormycosis Infections in Patients with COVID-19: Case Series and Literature Review. Mycopathologia 2024; 189:10. [PMID: 38231407 DOI: 10.1007/s11046-023-00808-z] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2023] [Accepted: 11/26/2023] [Indexed: 01/18/2024]
Abstract
BACKGROUND Mucormycosis and aspergillosis are angioinvasive infections mainly occurring in immunocompromised patients. However, mixed infection with mucormycosis and aspergillosis in post-COVID-19 patients is rare. In this report, we will report four cases and comprehensively review the published literature on COVID-19 associated mixed infection of aspergillosis and mucormycosis. METHOD Besides four of our cases, we searched for published articles using PubMed/MEDLINE, Scopus, and Web of Science databases from the beginning of 2020 until October 2023. RESULT During the COVID-19 pandemic, we analyzed 52 cases (4 from our research and 48 from other studies). The most common underlying disease (59.6%) was diabetes mellitus. However, 19.2% of COVID-19 patients had no underlying condition. Interestingly, rhino-orbital-cerebral mucormycosis featured prominently in India and Iran, while other countries primarily reported a higher prevalence of pulmonary cases. CONCLUSION In conclusion, this study highlights the presence of mixed aspergillosis and mucormycosis in COVID-19 patients who previously had common underlying diseases or even a healthy immune system. Therefore, managing COVID-19 patients should involve screening serum and respiratory samples using biomarkers to detect superinfections.
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Affiliation(s)
- Elahe Sasani
- Infectious and Tropical Diseases Research Center, Hormozgan Health Institute, Hormozgan University of Medical Sciences, Bandar Abbas, Iran
| | - Farzad Pakdel
- Department of Oculo-Facial Plastic Surgery, Farabi Eye Hospital, Tehran, Iran
| | - Sadegh Khodavaisy
- Department of Medical Parasitology and Mycology, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
- Zoonoses Research Center, Tehran University of Medical Sciences, Tehran, Iran
| | - Mohammadreza Salehi
- Department of Infectious Diseases and Tropical Medicine, Imam Khomeini Hospital Complex, Tehran University of Medical Sciences, Tehran, Iran
| | - Amir Salami
- Student Research Committee, School of Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Marjan Sohrabi
- Department of Infectious Diseases and Tropical Medicine, Imam Khomeini Hospital Complex, Tehran University of Medical Sciences, Tehran, Iran
| | - Pouyan Aminishakiba
- Pathology Department, Cancer Institute Hospital, IKHC, Tehran University of Medical Sciences, Tehran, Iran
| | - Iman Amirafzali
- Resident of Internal Medicine, Shahid Mohammadi Hospital, Hormozgan University of Medical Sciences, Bandar Abbas, Iran
| | - Arezoo Salami Khaneshan
- Department of Infectious Diseases and Tropical Medicine, Imam Khomeini Hospital Complex, Tehran University of Medical Sciences, Tehran, Iran.
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Shekouhi R, Farz F, Sohooli M, Mohammadi S, Abbasi A, Razaghi M, Fereydouni M, Sohrabi M, Seyed-Alagheband SA, Darabi MH. Investigating the safety and efficacy of nerve stimulation for management of groin pain after surgical herniorrhaphy: a systematic review and meta-analysis. Hernia 2023; 27:1363-1373. [PMID: 37597107 DOI: 10.1007/s10029-023-02861-5] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2023] [Accepted: 08/07/2023] [Indexed: 08/21/2023]
Abstract
PURPOSE Chronic post-operative inguinal pain (CPIP) following inguinal hernia repair has been a major sequela affecting 4000-48000 patients annually. Optimal management of CPIP has been a challenge, and pharmacological management particularly with opioids has shown unsatisfactory results. The main objective of this systematic review is to investigate the safety and efficacy of neuromodulation as an alternative intervention for the management of post-operative inguinal pain. METHODS A literature search was conducted by three reviewers to identify all relevant studies on the use of neuromodulatory interventions for treating post-operative inguinal pain. Data on study characteristics, neuromodulatory modalities, and patient's clinical data such as pre/post-interventional pain scores and analgesic requirements were extracted and reported. RESULTS A total of 389 patients with 357 (95.9%) males and 15 (4.1%) females were evaluated. The mean age of study participants was 47.9 ± 10.4 years. There were 187 (48.1%) and 202 (51.9%) patients allocated to the control and trial groups, respectively. The most common neuromodulation modality was TENS (4, 36.4%), followed by SCS (3, 27.3%), PNS (3, 27.3%), and acupuncture-assisted (2, 18.2%). The overall mean follow-up duration of the entire cohort was 3.8 months. The mean difference between pre-operative and post-operative VAS scores in the trial groups was 4.65 (95% Confidence Interval [CI], 2.97, 6.33), which was statistically significant (P value < 0.05). Patient-reported outcome measures showed significant responsiveness toward their treatments. CONCLUSION Nerve stimulation, in its many forms, is a safe and feasible option for the management of post-operative inguinal pain.
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Affiliation(s)
- R Shekouhi
- Department of Surgery, Shiraz University of Medical Sciences, Zand Avenue, P.O. Box 71345-1744, Shiraz, Iran
| | - F Farz
- Najafabad University of Medical Sciences, Isfahan, Iran
| | - M Sohooli
- Department of Surgery, Shiraz University of Medical Sciences, Zand Avenue, P.O. Box 71345-1744, Shiraz, Iran
| | - S Mohammadi
- University of Chicago, Medical Center, Chicago, USA
| | - A Abbasi
- Department of Surgery, Shiraz University of Medical Sciences, Zand Avenue, P.O. Box 71345-1744, Shiraz, Iran
| | - M Razaghi
- Department of Surgery, Shiraz University of Medical Sciences, Zand Avenue, P.O. Box 71345-1744, Shiraz, Iran
| | - M Fereydouni
- University of North Carolina at Charlotte, Charlotte, USA
| | - M Sohrabi
- Department of Surgery, Shiraz University of Medical Sciences, Zand Avenue, P.O. Box 71345-1744, Shiraz, Iran
| | | | - M H Darabi
- Department of Surgery, Shiraz University of Medical Sciences, Zand Avenue, P.O. Box 71345-1744, Shiraz, Iran.
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Sohrabi M, Khodaee P. Breakthrough on radon individual monitoring and protecting miners by novel dual-function monitor on respirator. Sci Rep 2023; 13:20868. [PMID: 38012213 PMCID: PMC10682466 DOI: 10.1038/s41598-023-48092-7] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2023] [Accepted: 11/22/2023] [Indexed: 11/29/2023] Open
Abstract
Breakthrough is made on inventing, producing and applying novel dual-function passive individual radon monitor in canister on respirators for radon inhalation monitoring and protecting individuals in particular miners. The rationale in this invention is having individual monitors for determining actual naturally inhaled radon by individuals and protection against particulates in one device. The monitor comprises two passive polycarbonate track detectors (PCTD); one near canister orifice (PCTD/bare), and one under activated carbon fabric (PCTD/ACF) to detect alphas of radon adsorbed on ACF carbon active sites. The PCTD/ACF detects radon with 12.7 times more sensitivity than PCTD/bare; called "Forced Amplification Factor (FAF)". Monitors were successfully operated and calibrated in laboratory radon chamber using low suction rate pump resembling human natural inhalation. The performance of monitor showed high promises for radon individual monitoring and protection. This novel development also opens new horizons for fundamental and practical scientific research to further upgrade the monitor.
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Affiliation(s)
- M Sohrabi
- Health Physics and Dosimetry Research Laboratory, Department of Energy Engineering and Physics, Amirkabir University of Technology, Tehran, Iran.
| | - P Khodaee
- Health Physics and Dosimetry Research Laboratory, Department of Energy Engineering and Physics, Amirkabir University of Technology, Tehran, Iran
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Sohrabi M. Modern universal standardised trends in worker and public exposure monitoring and control in 21st century by Sohrabi URPS-based hypothesis. Radiat Prot Dosimetry 2023; 199:2160-2168. [PMID: 37934989 DOI: 10.1093/rpd/ncad024] [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] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/12/2022] [Revised: 11/12/2022] [Accepted: 01/12/2023] [Indexed: 11/09/2023]
Abstract
The Universal Radiation Protection System (URPS) was recently hypothesised by Sohrabi in order to address the many deficiencies of current radiation protection system. The ICRP system is currently practiced worldwide based on the linear no-threshold (LNT) model with no supporting health risk data at low effective doses. The ICRP only considers worker occupational doses and sets dose limits only on one portion of doses a worker or public receives. The URPS hypothesis equals human heath-effect risks per unit dose either from natural or man-made sources; formulates dose limits on all integrated doses an individual receives; considers worker also a member of public; conserves 'cause-effect principle' for epidemiology risk estimation; introduces dose fractionation concept in radiation protection; introduces the 'URPS Model' for bridging LNT, hormesis and threshold models; recommends establishing 'National Patient Dose Registering System'; and defines modified/new exposure terms and definitions commensurate with URPS hypothesis, as advanced since 2014.
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Affiliation(s)
- M Sohrabi
- Health Physics and Dosimetry Research Laboratory, Department of Energy Engineering and Physics, Amirkabir University of Technology, Tehran 1591634311, Iran
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Ershadi R, Rafieian S, Salehi M, Kazemizadeh H, Amini H, Sohrabi M, Samimiat A, Sharafi Y, Dashtkoohi M, Vahedi M. COVID-19 and spontaneous pneumothorax: a survival analysis. J Cardiothorac Surg 2023; 18:211. [PMID: 37403072 DOI: 10.1186/s13019-023-02331-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2023] [Accepted: 06/29/2023] [Indexed: 07/06/2023] Open
Abstract
INTRODUCTION COVID-19 Patients may be at risk for involving with spontaneous pneumothorax. However, clinical data are lacking in this regard. In this study, we aimed to investigate the demographic, clinical, and radiological characteristics and survival predictors in COVID-19 patients with pneumothorax. METHODS This is a retrospectivestudy conducted on COVID-19 patients with pneumothorax that had been hospitalized at hospital. l from December 2021 to March 2022. The chest computed tomography (CT) scan of all patients was reviewed by an experienced pulmonologist in search of pulmonary pneumothorax. Survival analysis was conducted to identify the predictors of survival in patients with COVID-19 and pneumothorax. RESULTS A total of 67 patients with COVID-19 and pneumothorax were identified. Of these, 40.7% were located in the left lung, 40.7% were in the right lung, and 18.6% were found bilaterally. The most common symptoms in the patient with pneumothorax were dyspnea (65.7%), increased cough severity (53.7%), chest pain (25.4%), and hemoptysis (16.4%). The frequency of pulmonary left and right bullae, pleural effusion, andfungus ball were 22.4%, 22.4%, 22.4%, and 7.5%, respectively. Pneumothorax was managed with chest drain (80.6%), chest drain and surgery (6%), and conservatively (13.4%). The 50-day mortality rate was 52.2% (35 patients). The average survival time for deceased patients was 10.06 (2.17) days. CONCLUSIONS Our results demonstrated that those with pleural effusion or pulmonary bullae have a lower survival rate. Further studies are required to investigate the incidence and causality relation between COVID-19 and pneumothorax.
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Affiliation(s)
- Reza Ershadi
- Department of thoracic surgery, Imam Khomeini Hospital Complex, Tehran University of Medical Sciences, Tehran, Iran
| | - Shahab Rafieian
- Department of thoracic surgery, Imam Khomeini Hospital Complex, Tehran University of Medical Sciences, Tehran, Iran
| | - Mohammadreza Salehi
- Research center of Antibiotic stewardship & Anti-microbial resistance, Infectious diseases department, Imam Khomeini hospital complex, Tehran University of medical sciences, Tehran, Iran
| | - Hossein Kazemizadeh
- Advanced Thoracic Research Center, Tehran University of Medical Sciences, Tehran, Iran
| | - Hesam Amini
- Department of thoracic surgery, Imam Khomeini Hospital Complex, Tehran University of Medical Sciences, Tehran, Iran
| | - Marjan Sohrabi
- Department of Infectious Diseases, Imam Khomeini Hospital Complex, Tehran University of Medical Sciences, Tehran, Iran
| | - Alireza Samimiat
- Department of surgery, Sina Hospital, Tehran University of Medical Sciences, Tehran, Iran
| | - Yaser Sharafi
- Department of surgery, Sina Hospital, Tehran University pf Medical Sciences, Tehran, Iran
| | | | - Matin Vahedi
- Department of surgery, Sina Hospital, Tehran University of Medical Sciences, Tehran, Iran.
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Dashtkoohi M, Semnani F, Aghdami N, Sohrabi M, Salami Khaneshan A, Ghiasvand F, Adhami Moghadam P. Idiopathic methicillin-susceptible Staphylococcus aureus associated tricuspid valve endocarditis and pneumothorax in a patient without apparent predisposing factor: a case report. Iran J Microbiol 2022; 14:928-931. [PMID: 36721443 PMCID: PMC9867617 DOI: 10.18502/ijm.v14i6.11268] [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] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Pneumothorax following right-sided bacterial endocarditis is an infrequent medical complication usually reported in cases with a history of intravenous drug abuse. The following report describes the condition of a girl without congenital heart disease or a history of intravenous drug abuse who developed pneumothorax secondary to endocarditis.
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Affiliation(s)
- Mohammad Dashtkoohi
- Students’ Scientific Research Center (SSRC), Tehran University of Medical Sciences, Tehran, Iran
| | - Farbod Semnani
- Students’ Scientific Research Center (SSRC), Tehran University of Medical Sciences, Tehran, Iran
| | - Nasser Aghdami
- Department of Regenerative Medicine, Cell Science Research Center, Royan Institute for Stem Cell Biology and Technology, ACECR, Tehran, Iran,Department of Infectious Diseases and Tropical Medicines, Imam Khomeini Hospital Complex, Tehran University of Medical Sciences, Tehran, Iran
| | - Marjan Sohrabi
- Department of Infectious Diseases and Tropical Medicines, Imam Khomeini Hospital Complex, Tehran University of Medical Sciences, Tehran, Iran,Corresponding author: Marjan Sohrabi, MD, Department of Infectious Diseases and Tropical Medicines, Imam Khomeini Hospital Complex, Tehran University of Medical Sciences, Tehran, Iran. Tel: +98-9123447107 Fax: +98-66581615 ;
| | - Arezoo Salami Khaneshan
- Department of Infectious Diseases and Tropical Medicines, Imam Khomeini Hospital Complex, Tehran University of Medical Sciences, Tehran, Iran
| | - Fereshte Ghiasvand
- Department of Infectious Diseases and Tropical Medicines, Imam Khomeini Hospital Complex, Tehran University of Medical Sciences, Tehran, Iran
| | - Parnian Adhami Moghadam
- Department of Infectious Diseases and Tropical Medicines, Islamic Azad University of Medical Sciences, Tehran, Iran
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7
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Soltani Z, Sohrabi M, Habibi M. Analysis of 3D deuterium ion emission angular distribution in plasma focus device using novel panorama polycarbonate detectors. Radiat Phys Chem Oxf Engl 1993 2019. [DOI: 10.1016/j.radphyschem.2019.108404] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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Sohrabi M, Ebrahiminezhad F. EFFECTS OF ACTIVATED-CARBON-FABRIC PARAMETERS ON RESPONSE OF A NEW POLYCARBONATE-BASED INDIVIDUAL AND ENVIRONMENTAL RADON MONITOR. Radiat Prot Dosimetry 2019; 184:466-469. [PMID: 31330008 DOI: 10.1093/rpd/ncz098] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/02/2019] [Accepted: 04/02/2019] [Indexed: 06/10/2023]
Abstract
A new multi-purpose polycarbonate track detector (PCTD)/activated-carbon-fabric (ACF) radon monitor has been recently developed in our laboratory, a basic design of which was used for parametric studies. One 500 μm thick PCTD (3 cm x 3 cm) is used bare for detecting alphas from radon and progeny directly from air and another PCTD (3 cm x 3 cm) covered by an ACF layer (PCTD/ACF) to enhance the PCTD response by radon adsorption on its carbon active sites. The PCTDs were processed by 50 Hz-2 kV electrochemical etching method. The ACF/PCTD sensitivity was enhanced in respect to the PCTD/bare with an amplification factor (AF) defined as ratio of track density on PCTD under ACF to that of PCTD bare. Many ACF-related parameters studied affect the PCTD/ACF response among them thermal annealing of ACF, ACF thickness and distance of ACF layer to the PCTD are reported and discussed in this paper.
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Affiliation(s)
- M Sohrabi
- Health Physics and Dosimetry Research Laboratory, Department of Energy Engineering and Physics, Amirkabir University of Technology, Tehran, Iran
| | - F Ebrahiminezhad
- Health Physics and Dosimetry Research Laboratory, Department of Energy Engineering and Physics, Amirkabir University of Technology, Tehran, Iran
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9
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Sohrabi M. UNIVERSAL RADIATION PROTECTION SYSTEM (URPS); A NATURAL GLOBAL STANDARDISED TREND FOR HUMAN EXPOSURE CONTROL IN 21st CENTURY. Radiat Prot Dosimetry 2019; 184:277-284. [PMID: 31141148 DOI: 10.1093/rpd/ncz097] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/02/2019] [Indexed: 06/09/2023]
Abstract
In order to address the many deficiencies with current radiological protection system worldwide, this paper proposes a new Universal Radiation Protection System (URPS) Hypothesis with novel philosophy, concepts and methodologies of applying principles of equal human health-effect risks of an individual per unit radiation dose either from environmental natural background (NBG) or man-made sources; a 'standardised integrated dose system' for integrating all individual doses with emphasis on national NBG doses; considering worker as a member of public; and a 'cause-effect conservation principle' for epidemiology risk estimation. The URPS also a radiation hypothesises fractionation weighting factors (WF); a 'URPS Model' for bridging 'linear no-threshold and hormesis models'; example dose limit for workers; as well as new terms and definitions. State-of-the-art developments on URPS hypothesis are presented and discussed with simple global natural trends for standardised human exposure control in order to protect workers, patients, public and environment by standardised methods independent of source and country of origin in the 21st century.
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Affiliation(s)
- M Sohrabi
- Health Physics and Dosimetry Research Laboratory, Department of Energy Engineering and Physics, Amirkabir University of Technology, Tehran, Iran
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10
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Thambar S, Sohrabi M, Nikolarakos D, Nair R. The role of liquid biopsy in oral squamous cell carcinoma and oral potentially malignant disorders. Int J Oral Maxillofac Surg 2019. [DOI: 10.1016/j.ijom.2019.03.256] [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: 11/25/2022]
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Sotoodeh MS, Taheri-Torbati H, Sohrabi M, Ghoshuni M. Perception of biological motions is preserved in people with autism spectrum disorder: electrophysiological and behavioural evidences. J Intellect Disabil Res 2019; 63:72-84. [PMID: 30456855 DOI: 10.1111/jir.12565] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [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: 03/30/2018] [Revised: 08/28/2018] [Accepted: 10/14/2018] [Indexed: 06/09/2023]
Abstract
BACKGROUND There have been some controversies over the ability of individuals with autism spectrum disorder (ASD) to perceive biological motion. In this study, we used electroencephalography and behavioural measures (recognition test) to examine whether or not children with ASD can correctly identify biological motion. METHOD Twenty participants with ASD (mean = 11.3, SD = 2.1 years) and 20 typically developed (TD) participants (mean = 11.4, SD = 2.8 years) participated in the study. They watched videos and point light displays of actions, and their EEG was recorded. Then they answered action recognition test, and their accuracy and response times were recorded. RESULTS Our findings showed that children with ASD had the same mu suppression as a TD age-matched control group in both point light display and video presentations. Furthermore, the results showed that while TD and ASD groups did not differ in accuracy, ASD participants had a slower reaction time. CONCLUSION Taken together, our results indicate that the perception of non-emotional BMs is preserved in children with ASD.
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Affiliation(s)
- M S Sotoodeh
- Department of Motor Behavior, Ferdowsi University of Mashhad, Mashhad, Iran
| | - H Taheri-Torbati
- Department of Motor Behavior, Ferdowsi University of Mashhad, Mashhad, Iran
| | - M Sohrabi
- Department of Motor Behavior, Ferdowsi University of Mashhad, Mashhad, Iran
| | - M Ghoshuni
- Department of Biomedical Engineering, Mashhad Branch, Islamic Azad University, Mashhad, Iran
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Affiliation(s)
- M Toufan
- Cardiovascular Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - L Pourafkari
- Cardiovascular Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
- Department of Anesthesiology, University at Buffalo, New York, USA
| | - A Afrasiabi
- Cardiovascular Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - M Sohrabi
- Cardiovascular Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - N D Nader
- Department of Anesthesiology, University at Buffalo, New York, USA.
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13
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Shekoohi N, Javanbakht MH, Sohrabi M, Zarei M, Mohammadi H, Djalali M. Smoking Discriminately Changes the Serum Active and Non-Active Forms of Vitamin B12. Acta Med Iran 2017; 55:389-394. [PMID: 28843240] [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] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/19/2017] [Indexed: 06/07/2023] Open
Abstract
Smoking may modify the appetite, and consequently affect nutrient intake and serum micronutrients. The effect of smoking on vitamin B12 status has been considered in several studies. The research proposed that organic nitrites, nitro oxide, cyanides, and isocyanides of cigarette smoke interfere with vitamin B12 metabolism, and convert it to inactive forms. This research was carried out to determine the serum level of active and inactive forms of vitamin B12 in male smokers in comparison with male nonsmokers. This is a case-control study, in which the participants were 85 male smokers and 85 male nonsmokers. The serum levels of total and active form of vitamin B12 were measured. Dietary intake was recorded by a quantitative food frequency questionnaire and one-day 24-hour dietary recall method. Independent two sample T test was used to compare quantitative variables between the case and control groups. The serum level of total vitamin B12 was not significantly different between two groups, but serum level of active form of vitamin B12 in the smoking group was significantly lower than non-smoking group (P<0.001). This is one of the first studies that evaluated the serum level of active form of vitamin B12 in smokers in the Iranian community. The results of this study identified that serum level of total vitamin B12 might be not different between smoking and non-smoking people, but the function of this vitamin is disturbed in the body of smokers through the reduction of serum level of active form of vitamin B12.
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Affiliation(s)
- Niloofar Shekoohi
- Department of Cellular and Molecular Nutrition, School of Nutritional Sciences and Dietetics, Tehran University of Medical Sciences, Tehran, Iran
| | - Mohammad Hassan Javanbakht
- Department of Cellular and Molecular Nutrition, School of Nutritional Sciences and Dietetics, Tehran University of Medical Sciences, Tehran, Iran
| | - Marjan Sohrabi
- Department of Cellular and Molecular Nutrition, School of Nutritional Sciences and Dietetics, Tehran University of Medical Sciences, Tehran, Iran
| | - Mahnaz Zarei
- Department of Cellular and Molecular Nutrition, School of Nutritional Sciences and Dietetics, Tehran University of Medical Sciences, Tehran, Iran
| | - Hamed Mohammadi
- Department of Cellular and Molecular Nutrition, School of Nutritional Sciences and Dietetics, Tehran University of Medical Sciences, Tehran, Iran
| | - Mahmoud Djalali
- Department of Cellular and Molecular Nutrition, School of Nutritional Sciences and Dietetics, Tehran University of Medical Sciences, Tehran, Iran
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Motamed N, Khonsari M, Rabiee B, Ajdarkosh H, Hemasi G, Sohrabi M, Maadi M, Zamani F. Discriminatory Ability of Visceral Adiposity Index (VAI) in Diagnosis of Metabolic Syndrome: A Population Based Study. Exp Clin Endocrinol Diabetes 2017; 125:202-207. [DOI: 10.1055/s-0042-119032] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [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: 10/20/2022]
Affiliation(s)
- N. Motamed
- Department of Social Medicine, Zanjan University of Medical Sciences, Zanjan, Iran
| | - M. Khonsari
- Gastrointestinal and Liver Diseases Research Center (GILDRC), Tehran Firoozgar Hospital, Iran University of Medical Sciences, Tehran, Iran
| | - B. Rabiee
- Gastrointestinal and Liver Diseases Research Center (GILDRC), Tehran Firoozgar Hospital, Iran University of Medical Sciences, Tehran, Iran
| | - H. Ajdarkosh
- Gastrointestinal and Liver Diseases Research Center (GILDRC), Tehran Firoozgar Hospital, Iran University of Medical Sciences, Tehran, Iran
| | - G. Hemasi
- Gastrointestinal and Liver Diseases Research Center (GILDRC), Tehran Firoozgar Hospital, Iran University of Medical Sciences, Tehran, Iran
| | - M. Sohrabi
- Gastrointestinal and Liver Diseases Research Center (GILDRC), Tehran Firoozgar Hospital, Iran University of Medical Sciences, Tehran, Iran
| | - M. Maadi
- Gastrointestinal and Liver Diseases Research Center (GILDRC), Tehran Firoozgar Hospital, Iran University of Medical Sciences, Tehran, Iran
| | - F. Zamani
- Gastrointestinal and Liver Diseases Research Center (GILDRC), Tehran Firoozgar Hospital, Iran University of Medical Sciences, Tehran, Iran
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Fallah F, Minaei Chenar H, Amiri H, Omodipour S, Shirbande Ghods F, Kahrizi D, Sohrabi M, Ghorbani T, Kazemi E. Comparison of two DNA extraction protocols from leave samples of Cotinus coggygria, Citrus sinensis and Genus juglans. ACTA ACUST UNITED AC 2017; 63:76-78. [PMID: 28364796 DOI: 10.14715/cmb/2017.63.2.11] [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: 03/25/2017] [Indexed: 11/18/2022]
Abstract
High quality DNA is essential for molecular research. Secondary metabolites can affect the quantity and quality DNA. In current research two DNA isolation methods including CTAB and Delaporta (protocols 1 & 2 respectively) were applied in three leave samples from Cotinus coggygria, Citrus sinensis and Genus juglans that their leaves are rich of secondary metabolites. We successfully isolated DNA from C. coggygria, C. sinensis and Genus Juglans using the two protocols described above. Good quality DNA was isolated from C. coggygria, C. sinensis and Genus Juglans using protocol 1, while protocol 2 failed to produce usable DNA from these sources. The highest amount of DNA (1.3-1.6) was obtained from them using protocol 1. As we discovered, procedure 1 may work better for plants with secondary metabolites.
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Affiliation(s)
- F Fallah
- Department of Agronomy and Plant Breeding, Razi University, Kermanshah, Iran
| | - H Minaei Chenar
- Department of Agronomy and Plant Breeding, Razi University, Kermanshah, Iran
| | - H Amiri
- Department of Forestry, Faculty of Agriculture, Razi University, Kermanshah, Iran
| | - S Omodipour
- Department of Forestry, Faculty of Agriculture, Razi University, Kermanshah, Iran
| | - F Shirbande Ghods
- Department of Forestry, Faculty of Agriculture, Razi University, Kermanshah, Iran
| | - D Kahrizi
- Department of Agronomy and Plant Breeding, Razi University, Kermanshah, Iran
| | - M Sohrabi
- Zagros Bioidea Company, Razi University Incubator, Kermanshah, Iran
| | - T Ghorbani
- Department of Agronomy and Plant Breeding, Razi University, Kermanshah, Iran
| | - E Kazemi
- Fertility and Infertility Research Center, Kermanshah University of Medical Sciences, Kermanshah, Iran
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Shahraki M, Sohrabi M, Taheri Torbati HR, Nikkhah K, NaeimiKia M. Effect of rhythmic auditory stimulation on gait kinematic parameters of patients with multiple sclerosis. J Med Life 2017; 10:33-37. [PMID: 28255373 PMCID: PMC5304368] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Purpose: This study aimed to examine the effect of rhythmic auditory stimulation on gait kinematic parameters of patients with multiple sclerosis. Subjects and Methods: In this study, 18 subjects, comprising 4 males and 14 females with Multiple Sclerosis with expanded disability status scale of 3 to 6 were chosen. Subjects were selected by available and targeted sampling and were randomly divided into two experimental (n = 9) and control (n = 9) groups. Exercises were gait with rhythmic auditory stimulation by a metronome device, in addition to gait without stimulation for the experimental and control groups, respectively. Training was carried out for 3 weeks, with 30 min duration for each session 3 times a week. Stride length, stride time, double support time, cadence and gait speed were measured by motion analysis device. Results: There was a significant difference between stride length, stride time, double support time, cadence and gait speed in the experimental group, before and after the training. Furthermore, there was a significant difference between the experimental and control groups in the enhancement of stride length, stride time, cadence and gait speed in favor of the experimental group. While this difference was not significant for double support time. Conclusion: The results of this study showed that rhythmic auditory stimulation is an effective rehabilitation method to improve gait kinematic parameters in patients with multiple sclerosis.
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Affiliation(s)
- M Shahraki
- Department of Motor Behavior, Faculty of Sport Sciences, Ferdowsi University of Mashhad, Mashhad, Iran
| | - M Sohrabi
- Department of Motor Behavior, Faculty of Sport Sciences, Ferdowsi University of Mashhad, Mashhad, Iran
| | - HR Taheri Torbati
- Department of Motor Behavior, Faculty of Sport Sciences, Ferdowsi University of Mashhad, Mashhad, Iran
| | - K Nikkhah
- Department of Neurology, Mashhad University of Medical Sciences, Mashhad, Iran
| | - M NaeimiKia
- Department of Motor Behavior, Sport Sciences Research Institute of Iran, Tehran, Iran
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17
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Sohrabi M, Hakimi A, Soltani Z. BACKGROUND TRACK DENSITY REDUCTION OF 50-HZ-HV ECE-PROCESSED THICK POLYCARBONATE DETECTORS TO IMPROVE LOWER DETECTION LIMIT. Radiat Prot Dosimetry 2016; 171:470-476. [PMID: 26564866 DOI: 10.1093/rpd/ncv470] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/11/2014] [Revised: 06/02/2015] [Accepted: 10/10/2015] [Indexed: 06/05/2023]
Abstract
A recent novel development of 50-Hz-HV ECE of 1-mm-thick and 250-µm-thick polycarbonate track detectors (PCTDs) has proved some promising results for some health physics, dosimetry and ion-beam-related applications. The method while proved having some good characteristics for some applications provided a relatively higher background track density (BGTD) in particular when very high voltages are applied to the PCTDs. In order to decrease the minimum detection limit (MDL) of the PCTDs and to further promote its applications for low dose, the BGTD was reduced by applying a layer removal methodology applying ethylendiamine (EDA). The effects of EDA concentrations (50, 60, 65, 70, 75, 80, 85 and 90 %) in water at room temperature (26°C) and soaking durations up to 100 min at different EDA concentration on BGTD reduction were studied. The thickness of the layer removed from the surface of a PCTD highly depends on the soaking time and EDA concentration; it increases as the EDA concentration increases up to for example 700 µm after 2 h of soaking in the EDA solution. After ∼10 min of soaking duration at any of the above-stated concentrations, the BGTD reaches its minimum value, a value which differs from concentration to concentration. An EDA concentration of 85 % in water provided the lowest BGTD of 64.06 ± 3.12 tracks cm- 2; ∼6 times lower than that of its original value. It is shown that the layer removal process does not change the registration characteristics of the PCTD and its appearance significantly. The MDL of the PCTDs depends strongly on the BGTD. The MDL values for a desired confidence level were also studied by three calculation methods. The results of the BGTD and the MDL studies under different conditions applied are presented and discussed.
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Affiliation(s)
- M Sohrabi
- Health Physics and Dosimetry Research Laboratory, Department of Energy Engineering and Physics, Amirkabir University of Technology, Tehran, Islamic Republic of Iran
| | - A Hakimi
- Health Physics and Dosimetry Research Laboratory, Department of Energy Engineering and Physics, Amirkabir University of Technology, Tehran, Islamic Republic of Iran
| | - Z Soltani
- Health Physics and Dosimetry Research Laboratory, Department of Energy Engineering and Physics, Amirkabir University of Technology, Tehran, Islamic Republic of Iran
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Scott ER, Barchfeld R, Riemenschneider P, Domier CW, Muscatello CM, Sohrabi M, Kaita R, Ren Y, Luhmann NC. Far-infrared tangential interferometer/polarimeter design and installation for NSTX-U. Rev Sci Instrum 2016; 87:11E114. [PMID: 27910494 DOI: 10.1063/1.4960415] [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] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
The Far-infrared Tangential Interferometer/Polarimeter (FIReTIP) system has been refurbished and is being reinstalled on the National Spherical Torus Experiment-Upgrade (NSTX-U) to supply real-time line-integrated core electron density measurements for use in the NSTX-U plasma control system (PCS) to facilitate real-time density feedback control of the NSTX-U plasma. Inclusion of a visible light heterodyne interferometer in the FIReTIP system allows for real-time vibration compensation due to movement of an internally mounted retroreflector and the FIReTIP front-end optics. Real-time signal correction is achieved through use of a National Instruments CompactRIO field-programmable gate array.
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Affiliation(s)
- E R Scott
- Department of Mechanical and Aerospace Engineering, University of California, Davis, California 95616, USA
| | - R Barchfeld
- Department of Applied Science, University of California, Davis, California 95616, USA
| | - P Riemenschneider
- Department of Electrical and Computer Engineering, University of California, Davis, California 95616, USA
| | - C W Domier
- Department of Electrical and Computer Engineering, University of California, Davis, California 95616, USA
| | | | - M Sohrabi
- Department of Electrical and Computer Engineering, University of California, Davis, California 95616, USA
| | - R Kaita
- Princeton Plasma Physics Laboratory, Princeton, New Jersey 08540, USA
| | - Y Ren
- Princeton Plasma Physics Laboratory, Princeton, New Jersey 08540, USA
| | - N C Luhmann
- Department of Electrical and Computer Engineering, University of California, Davis, California 95616, USA
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Memarmoghaddam M, Torbati HT, Sohrabi M, Mashhadi A, Kashi A. Effects of a selected exercise programon executive function of children with attention deficit hyperactivity disorder. J Med Life 2016; 9:373-379. [PMID: 27928441 PMCID: PMC5141397] [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] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2016] [Accepted: 09/29/2016] [Indexed: 10/28/2022] Open
Abstract
Introduction. The aim of this study was to examine the effectiveness of a Selected exercise program on the executive function of children with ADHD. Method. The participants were 40 male students, aged 7-11 years. The participants were randomly assigned into two groups (experimental and control). The experimental group participated in an exercise program for 24 sessions, 90 minutes per session. The control group did not receive any intervention. Before and after the exercise period, all the participants were assessed with Stroop and Go-No-Go tests, and the resulting data were analyzed by using MANCOVA. Result. The results showed that the cognitive inhibition of the children in the experimental group was significantly different compared with the control group (p < 0.05). Additionally, there was a significant difference between the experimental and control groups in the behavioral inhibition (p < 0.05). Conclusion. An organized physical activity helps to improve the executive function in children with ADHD.
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Affiliation(s)
- M Memarmoghaddam
- Department of Motor Behavior, Faculty of Physical Education and Sport Sciences, Ferdowsi University Of Mashhad, Mashhad, Iran
| | - H T Torbati
- Department of Motor Behavior, Faculty of Physical Education and Sport Sciences, Ferdowsi University Of Mashhad, Mashhad, Iran
| | - M Sohrabi
- Department of Motor Behavior, Faculty of Physical Education and Sport Sciences, Ferdowsi University Of Mashhad, Mashhad, Iran
| | - A Mashhadi
- Department of Psychology, Faculty of Education and Psychology, Ferdowsi University of Mashhad, Mashhad, Iran
| | - A Kashi
- Sport Sciences Research Institute of Iran, Tehran, Iran
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Kazemi E, Kahrizi D, Moradi MT, Sohrabi M, Yari K. Gastric Cancer and Helicobacter pylori: Impact of hopQII Gene. Cell Mol Biol (Noisy-le-grand) 2016; 62:107-110. [PMID: 26950460] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2015] [Accepted: 02/26/2016] [Indexed: 06/05/2023]
Abstract
The Helicobacter pylori is a Gram-negative, microaerophilic bacterium found usually in the stomach and use a number of mechanisms to survive in the stomach lumen. The presence of these bacteria in the stomach can lead to gastritis and reduction in stomach acid production. Acute inflammation can directly damage to the peripheral cells that are responsible for the secretion of acid. The risk of developing gastric carcinoma is associated to heterogeneity of Helicobacter pylori virulence factors. The HopQII is one of the outer membrane proteins involved in bacterial adherence to gastric mucosa and has been suggested to also play a role in the virulence of H. pylori. The purpose of the current study was to investigate the association between different H. pylori virulence hopQII allele and patients with gastroduodenal disorders. For this purpose 58 stomach biopsies of patients with gastric cancer and 100 saliva samples from healthy individuals were collected. Then genomic DNA was purified and PCR for was done for desired genes via specific primers. The H. pylori infections were diagnosed by PCR for GlmM gene. Then frequencies of hopQII+ and hopQII- genotypes was determined in H. pylori infected cases. Statistical analysis showed that there were not significant differences between healthy and diseased ones for genotype hopQII+.
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Affiliation(s)
- E Kazemi
- Kermanshah University of Medical Sciences Medical Biology Research Center Kermanshah Iran
| | - D Kahrizi
- Razi University Department of Agronomy and Plant Breeding Kermanshah Iran
| | - M T Moradi
- Kermanshah University of Medical Sciences Medical Biology Research Center Kermanshah Iran
| | - M Sohrabi
- Razi University Zagros Bioidea Co., Razi University Incubator Kermanshah Iran
| | - K Yari
- Kermanshah University of Medical Sciences Medical Biology Research Center Kermanshah Iran
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22
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Kazemi E, Kahrizi D, Moradi MT, Sohrabi M, Amini S, Mousavi SAR, Yari K. Association between Helicobacter pylori hopQI genotypes and human gastric cancer risk. Cell Mol Biol (Noisy-le-grand) 2016; 62:6-9. [PMID: 26828979] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2015] [Accepted: 01/01/2016] [Indexed: 06/05/2023]
Abstract
The Helicobacter pylori use a number of mechanisms to survive in the stomach lumen and can lead to gastritis and reduction in stomach acid secretion. It has been found that the risk of developing gastric carcinoma is associated to heterogeneity of H. pylori virulence factors such as HopQ. The HopQ is one of the outer membrane proteins involved in bacterial adherence to gastric mucosa and has been suggested to also main role in the virulence of H. pylori. The purpose of the current study was to investigate the association between different H. pylori virulence hopQI (types I) genotyping and patients with gastroduodenal disorders. For this purpose 58 stomach biopsies of the patients with gastric cancer and 100 saliva samples from healthy and H. pylori infected individuals were collected and studied. Then genomic DNA was purified and PCR was done for desired gene via specific primers. The H. pylori infections were diagnosed using PCR for GlmM gene. Then frequencies of hopQI+ and hopQI- genotypes were determined in H. pylori infected cases. Statistical analysis showed that there were not significant differences between healthy and diseased ones for genotypes hopQI+ and hopQI-. Then the hopQI+ cannot be as a risk factor genotype for gastric cancer.
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Affiliation(s)
- E Kazemi
- Kermanshah University of Medical Sciences Medical Biology Research Center Kermanshah Iran
| | - D Kahrizi
- Razi University Department of Agronomy and Plant Breeding, Faculty of Agriculture Kermanshah Iran
| | - M T Moradi
- Kermanshah University of Medical Sciences Medical Biology Research Center Kermanshah Iran
| | - M Sohrabi
- Razi University Zagros Bioidea Co., Razi University Incubator Kermanshah Iran
| | - S Amini
- Islamic Azad University Department of Biology, Sanandaj Branch Sanandaj Iran
| | - S A R Mousavi
- The Scripps Research Institute Howard Hughes Medical Institute, Molecular and Cellular Neuroscience La Jolla USA
| | - K Yari
- Kermanshah University of Medical Sciences Medical Biology Research Center Kermanshah Iran
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Abstract
A new two-phase media method was developed for determination of (226)Ra activity in water. The method was calibrated by applying 7 standard (226)Ra waters with known activities. The method detects alphas in two media; 80 ml of water in a glass bottle with air or a non-polar liquid such as olive oil on top of the water. Alpha particles from (226)Ra, (222)Rn and progeny were detected by two polycarbonate track detectors (PCTDs) which were mounted on a holder inserted in the bottle so that one PCTD is placed in water and the other in air or in the non-polar liquid. The bottles were hermetically sealed and kept for 40 or 48 d. The PCTDs in the bottles shaken every other day enhanced the sensitivity of the measurements. The Calibration Factors for the standard (226)Ra waters, air and olive oil above water are, respectively, (7.85 ± 0.25) × 10(-3), (7.94 ± 0.13) × 10(-3) and 3.02 × 10(-2) tracks.cm(-2) kBq(-1) h(-1) m(3).
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Affiliation(s)
- M Sohrabi
- Health Physics and Dosimetry Research Laboratory, Department of Energy Engineering and Physics, Amirkabir University of Technology, Tehran, Iran
| | - F Khodadadi
- Health Physics and Dosimetry Research Laboratory, Department of Energy Engineering and Physics, Amirkabir University of Technology, Tehran, Iran
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24
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Sohrabi M. A universal radiation protection system based on individual standardised integrated doses. Radiat Prot Dosimetry 2015; 164:459-466. [PMID: 25994846 DOI: 10.1093/rpd/ncv336] [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] [Indexed: 06/04/2023]
Abstract
A 'Universal Radiation Protection System' (URPS) is proposed in this paper with a novel philosophy, concept and methodology. It applies a 'Standardised Integrated Dose System' (SIDS) based on health risk limits for workers and public, no matter where they live in the world. The URPS assigns equal radiation health risk limit to an individual by integrating doses from national natural background (NBG) radiation and from man-made sources. For public, the SIDS integrates doses from planned exposure situations within a dose limit (e.g. 1 mSv y(-1)) on top of the mean national NBG dose in a country. For workers, the SIDS integrates within a dose limit (e.g. 20 mSv y(-1)) of occupational dose and doses from mean national NBG and from planned exposure situations as a member of public within the public dose limit. A panorama overview and the rationale in support of the URPS are presented and discussed with a hope to ignite further thoughts and ideas towards establishing the URPS for universal use.
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Affiliation(s)
- M Sohrabi
- Health Physics and Dosimetry Research Laboratory, Department of Energy Engineering and Physics, Amirkabir University of Technology, Tehran, Iran
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Sohrabi M. High Levels of Natural Radiation and Radon Areas. Radiat Prot Dosimetry 2015; 164:457-458. [PMID: 25979742 DOI: 10.1093/rpd/ncv335] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Affiliation(s)
- M Sohrabi
- Amirkabir University of Technology, Tehran, Iran
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Sohrabi M, Ramezani V. Alpha particle energy response of 1-mm-thick polycarbonate track detectors by 50 Hz-HV electrochemical etching method. Radiat Prot Dosimetry 2015; 164:244-251. [PMID: 25301970 DOI: 10.1093/rpd/ncu303] [Citation(s) in RCA: 5] [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] [Received: 06/16/2014] [Accepted: 09/06/2014] [Indexed: 06/04/2023]
Abstract
The electrochemical etching (ECE) method enlarges charged particle tracks to enhance its applications in particular in health physics and radiation dosimetry. The ECE method is usually based on using a high frequency-high voltage (HF-HV) generator with 250-µm-thick polycarbonate track detectors (PCTDs). The authors' recent studies on nitrogen and helium ions and alpha tracks in 1-mm-thick large-size PCTDs under a 50 Hz-HV ECE process provided promising results. In this study, alpha track efficiency and mean track diameter versus energy responses and registration energy range as well as alpha and background track shapes under three sets of 50 Hz-4, 5 and 6 kV applied field conditions have been studied and are reported. The efficiency versus alpha energy has a Bragg-type response from ∼15 keV to ∼4.5 MeV for the field conditions applied with an efficiency value of 40-50% at the Bragg peak. The results are presented and discussed.
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Affiliation(s)
- M Sohrabi
- Health Physics and Dosimetry Research Laboratory, Department of Energy Engineering and Physics, Amirkabir University of Technology, Tehran, Iran
| | - V Ramezani
- Health Physics and Dosimetry Research Laboratory, Department of Energy Engineering and Physics, Amirkabir University of Technology, Tehran, Iran
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Sohrabi M, Ramezani V, Habibi M. A new method for detection of alpha particles in 1 mm thick polycarbonate detectors using 50 Hz – HV ECE method. RADIAT MEAS 2014. [DOI: 10.1016/j.radmeas.2014.06.003] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [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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Sohrabi M, Ghasemi M, Amrollahi R, Khamooshi C, Parsouzi Z. Assessment of environmental public exposure from a hypothetical nuclear accident for Unit-1 Bushehr nuclear power plant. Radiat Environ Biophys 2013; 52:235-244. [PMID: 23358597 DOI: 10.1007/s00411-013-0456-y] [Citation(s) in RCA: 3] [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: 02/03/2012] [Accepted: 01/04/2013] [Indexed: 06/01/2023]
Abstract
Unit-1 of the Bushehr nuclear power plant (BNPP-1) is a VVER-type reactor with 1,000-MWe power constructed near Bushehr city at the coast of the Persian Gulf, Iran. The reactor has been recently operational to near its full power. The radiological impact of nuclear power plant (NPP) accidents is of public concern, and the assessment of radiological consequences of any hypothetical nuclear accident on public exposure is vital. The hypothetical accident scenario considered in this paper is a design-basis accident, that is, a primary coolant leakage to the secondary circuit. This scenario was selected in order to compare and verify the results obtained in the present paper with those reported in the Final Safety Analysis Report (FSAR 2007) of the BNPP-1 and to develop a well-proven methodology that can be used to study other and more severe hypothetical accident scenarios for this reactor. In the present study, the version 2.01 of the PC COSYMA code was applied. In the early phase of the accidental releases, effective doses (from external and internal exposures) as well as individual and collective doses (due to the late phase of accidental releases) were evaluated. The surrounding area of the BNPP-1 within a radius of 80 km was subdivided into seven concentric rings and 16 sectors, and distribution of population and agricultural products was calculated for this grid. The results show that during the first year following the modeled hypothetical accident, the effective doses do not exceed the limit of 5 mSv, for the considered distances from the BNPP-1. The results obtained in this study are in good agreement with those in the FSAR-2007 report. The agreement obtained is in light of many inherent uncertainties and variables existing in the two modeling procedures applied and proves that the methodology applied here can also be used to model other severe hypothetical accident scenarios of the BNPP-1 such as a small and large break in the reactor coolant system as well as beyond design-basis accidents. Such scenarios are planned to be studied in the near future, for this reactor.
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Affiliation(s)
- M Sohrabi
- Health Physics and Dosimetry Research Laboratory, Department of Physics, Amirkabir University of Technology, Tehran, Iran.
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Sohrabi M, Parsouzi Z, Amrollahi R, Khamooshy C, Ghasemi M. Public exposure from environmental release of radioactive material under normal operation of unit-1 Bushehr nuclear power plant. ANN NUCL ENERGY 2013. [DOI: 10.1016/j.anucene.2012.12.002] [Citation(s) in RCA: 10] [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] [Indexed: 10/27/2022]
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Sohrabi M, Habibi M, Roshani G, Ramezani V. A novel method for observation by unaided eyes of nitrogen ion tracks and angular distribution in a plasma focus device using 50 Hz–HV electrochemically-etched polycarbonate detectors. RADIAT MEAS 2012. [DOI: 10.1016/j.radmeas.2012.05.012] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Sohrabi M, Rafii MY, Hanafi MM, Siti Nor Akmar A, Latif MA. Genetic diversity of upland rice germplasm in Malaysia based on quantitative traits. ScientificWorldJournal 2012; 2012:416291. [PMID: 22654604 PMCID: PMC3361239 DOI: 10.1100/2012/416291] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2011] [Accepted: 01/18/2012] [Indexed: 11/24/2022] Open
Abstract
Genetic diversity is prerequisite for any crop improvement program as it helps in the development of superior recombinants. Fifty Malaysian upland rice accessions were evaluated for 12 growth traits, yield and yield components. All of the traits were significant and highly significant among the accessions. The higher magnitudes of genotypic and phenotypic coefficients of variation were recorded for flag leaf length-to-width ratio, spikelet fertility, and days to flowering. High heritability along with high genetic advance was registered for yield of plant, days to flowering, and flag leaf length-to-width ratio suggesting preponderance of additive gene action in the gene expression of these characters. Plant height showed highly significant positive correlation with most of the traits. According to UPGMA cluster analysis all accessions were clustered into six groups. Twelve morphological traits provided around 77% of total variation among the accessions.
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Affiliation(s)
- M Sohrabi
- Institute of Tropical Agriculture, Universiti Putra Malaysia, 43400 Serdang, Selangor, Malaysia
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Haji-Abadi MR, Rahnama N, Sohrabi M, Khayambashi K. Validity and reliability of the Persian version of the Movement Imagery Questionnaire 2. Br J Sports Med 2010. [DOI: 10.1136/bjsm.2010.078725.185] [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: 11/04/2022]
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Pakdehi SG, Sohrabi M, Moghaddam AS. Liquid phase hydrogenation of acethydrazone to N'-methyl acethydrazide over Pd/γ-Al2O3 catalyst. Braz J Chem Eng 2010. [DOI: 10.1590/s0104-66322010000100013] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- S. G. Pakdehi
- University of Tehran, Iran; Malek Ashtar University of Technology, Iran
| | - M. Sohrabi
- Amirkabir University of Technology, Iran
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Taheri M, Sohrabi M, Jaleh B, Hosseini T, Montazer Rahmati MM. Low level determination of (226)Ra in water using a micro-precipitate track method for large-scale environmental monitoring. J Radiol Prot 2009; 29:535-543. [PMID: 19923643 DOI: 10.1088/0952-4746/29/4/008] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
In the present paper a method has been developed for the determination of (226)Ra in water by the detection, using a solid-state nuclear track detector (SSNTD), of alpha particles from (226)Ra in equilibrium with (222)Rn in micro-precipitates collected on a filter. The micro-precipitates were prepared from environmental water samples by collection of radium with lead as Pb/RaSO(4). Several factors affect the (226)Ra precipitation on the filter and its recovery, in particular the filter pore size. Therefore in this experiment Whatman #42 and Millipore filters with different pore sizes were used. Using a 0.45 microm Millipore filter, the recovery efficiency was increased up to 96%, and the alpha self-absorption and scattering decreased remarkably. For efficient detection of alphas from (226)Ra/(222)Rn in equilibrium, three types of SSNTD were used-polycarbonate (PC) electrochemically etched (ECE), CR-39 and LR-115 chemically etched (CE). By preparing a standard micro-precipitate on a filter with known (226)Ra/(222)Rn characteristics, the calibration response of each detector and its minimum detection limit (MDL) were determined.
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Affiliation(s)
- M Taheri
- National Radiation Protection Department, Iranian Nuclear Regulatory Authority, PO Box 14155-1339, Tehran, Iran.
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Sohrabi M, Kalati FA, Vatansever S, Abbasi MM, Roshangar L, Khaki AA, Tuglu IM, Aydemir I, Dustar Y, Javadzadeh BY, Rad JS. Effect of dietary and topical Celecoxib on expression of bcl-2, bax, c-erb-B2 and Ki67 in carcinogen-induced tongue carcinoma in rat. Pak J Biol Sci 2009; 12:750-7. [PMID: 19806804 DOI: 10.3923/pjbs.2009.750.757] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [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
The aim of the study is to determine the effect of Celecoxib administration, dietary or topical, on expression of Ki-67, c-erb-B2, bcl-2 and bax genes in rat tongue by the immunohistochemistry methods and also tdt-mediated dupt-biotin nick end labeling assay in order to explore their role in malignant transformation and the proliferation rate, apoptosis rate in tongue squamous cell carcinoma. Effects of celecoxib on tongue carcinogenesis were investigated in 40 adult male Sprague Dawley 3-3.5 months rats initiated with 30 ppm 4-nitroquinoline-1-oxide. The immunohistochemical expression of Ki-67, bcl2, bax and c-erb-B2 were also examined for analysis of the effects of Celecoxib on tongue carcinogenesis. Differences among groups were statistically analyzed with one-way analysis of variance (SPSS-13, p < 0.05). At week 8, the incidence of tongue precancer lesions was reduced by Celecoxib and there were significant differences in the average expression of Ki-67 (p = 0.00), c-erb-B2 (p = 0.01), bax (p = 0.02), bcl2 (p = 0.02) and also in TUNEL assay (p = 0.00). The results suggest probably that the level of c-erb-B2, bcl-2 and bax expression could show behavior of squamous cell carcinoma in initiation phase of developing carcinoma.
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Affiliation(s)
- M Sohrabi
- Department of Anatomical Sciences, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
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Sohrabi M, Danesh A, Jamiolahmady M. Visualisation of Residual Oil Recovery by Near-miscible Gas and SWAG Injection Using High-pressure Micromodels. Transp Porous Media 2008. [DOI: 10.1007/s11242-007-9193-5] [Citation(s) in RCA: 75] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Riyahi-Alam N, Alibabaei N, Takavar A, Sohrabi M, Fard-Esfahani A, Oghabian MA, Bakhtiary M. Platelet-based MPLE denoising of SPECT images: phantom and patient study. Conf Proc IEEE Eng Med Biol Soc 2007; 2006:4787-90. [PMID: 17946651 DOI: 10.1109/iembs.2006.260278] [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] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
In this study the evaluation of a Platelet-based Maximum Penalized Likelihood Estimation (MPLE) for denoising SPECT images was performed and compared with other denoising methods such as Wavelets or Butterworth filteration. Platelet-based MPLE factorization as a multiscale decomposition approach has been already proposed for better edges and surfaces representation due to Poisson noise and inherent smoothness of this kind of images. We applied this approach on both simulated and real SPECT images. For NEMA phantom images, the measured noise levels before (M(b)) and after (M(a)) denoising with Platelet-based MPLE approach were M(b)=2.1732, M(a)=0.1399. In patient study for 32 cardiac SPECT images, the difference between noise level and SNR before and after the approach were (M(b)=3.7607, SNR(b)=9.7762, M(a)=0.7374, SNR(a)=41.0848) respectively. Thus the Coefficient Variance (C.V) of SNR values for denoised images with this algorithm as compared with Butterworth filter, (145/33%) was found. For 32 brain SPECT images the Coefficient Variance of SNR values, (196/17%) was obtained. Our results shows that Platelet-based MPLE is a useful method for denoising SPECT images considering better homogenous image, improvements in SNR, better radioactive uptake in target organ and reduction of interfering activity from background radiation to compare to that of other conventional denoising methods.
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Affiliation(s)
- N Riyahi-Alam
- Dept. of Med. Phys. & Biomed. Eng., Tehran Univ. of Med. Sci., Iran.
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Rahmani M, Sohrabi M. Long-term deactivation of Pt/alumina catalyst by organosilicons in the total oxidation of hydrocarbons. Kinet Catal 2006. [DOI: 10.1134/s0023158406060127] [Citation(s) in RCA: 7] [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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Sohrabi M, Zareikar B. Modeling of the Residence Time Distribution and Application of the Continuous Two Impinging Streams Reactor in Liquid-Liquid Reactions. Chem Eng Technol 2005. [DOI: 10.1002/ceat.200407016] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Marvast MA, Sohrabi M, Zarrinpashne S, Baghmisheh G. Fischer-Tropsch Synthesis: Modeling and Performance Study for Fe-HZSM5 Bifunctional Catalyst. Chem Eng Technol 2005. [DOI: 10.1002/ceat.200407013] [Citation(s) in RCA: 73] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Sohrabi M, Esmaili A. New public dose assessment of elevated natural radiation areas of Ramsar (Iran) for epidemiological studies. ACTA ACUST UNITED AC 2002. [DOI: 10.1016/s0531-5131(01)00528-3] [Citation(s) in RCA: 41] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Abstract
One of the most important and prevalent isotopes of radium (Ra) in the human food chain, and especially in drinking water, is 226Ra. To determine the contribution of this radionuclide to the annual effective dose to the public in Iran, a national program for determination of this radionuclide was established. Over 500 water samples from different surface and ground water supplies including wells, rivers and springs, as well as hot springs and sea water from the Caspian Sea and Persian Gulf have been analyzed. An emanation method with a minimum detection limit of less than 2 mBq L(-1) was developed and applied in this study. Unweighted mean concentrations of 3.3 mBq L(-1) and 8.0 mBq L(-1) were determined in surface and ground drinking water supplies, respectively. Based on such values, mean unweighted annual intakes of 226Ra were found to be 0.85 Bq for an infant, 1.97 Bq for a child, and 2.82 Bq for an adult, which correspond to mean unweighted annual effective doses of 0.17 microSv y(-1), 0.39 microSv y(-1), and 0.56 microSv y(-1), respectively. The mean 226Ra concentrations in hot springs were higher with a maximum of 146.5 Bq L(-1) measured in the Ab-e-Siah hot spring in Ramsar, a town on the coast of the Caspian Sea in Iran.
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Affiliation(s)
- M Sohrabi
- National Radiation Protection Department & Center for Research on Natural Radiation, Atomic Energy Organization of Iran, PO Box 14155-4494, Tehran, Islamic Republic of Iran
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Sohrabi M, Zainali G. A new versatile electrochemical etching chamber (Vecec) system for multi-size and multi-shape detector processing. RADIAT MEAS 1999. [DOI: 10.1016/s1350-4487(99)00188-2] [Citation(s) in RCA: 3] [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: 11/28/2022]
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