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Bohsas H, Alibrahim H, Swed S, Abouainain Y, Aljabali A, Kazan L, Jabban YKE, Mehmood Q, Sawaf B, Eissa N, Alkasem M, Edrees Y, Cherrez-Ojeda I, Fathey S, Rashid G, Hafez W, AbdElrahim E, Osman H, Emran TB, Khan Pathan R, Khandaker MU. Prevalence and knowledge of polycystic ovary syndrome (PCOS) and health-related practices among women of Syria: a cross-sectional study. J Psychosom Obstet Gynaecol 2024; 45:2318194. [PMID: 38635351 DOI: 10.1080/0167482x.2024.2318194] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/28/2023] [Accepted: 02/08/2024] [Indexed: 04/20/2024] Open
Abstract
Polycystic Ovarian Syndrome (PCOS) is a prevalent metabolic and hormonal disorder affecting women of reproductive age. Limited data exists on Syrian women's PCOS awareness and health behaviors. This study aimed to gauge PCOS prevalence, knowledge, awareness, and health-related practices among Syrian women. A cross-sectional online survey was conducted from 11 February to 27 October 2022, targeting Syrian women aged 18-45. Collaborators from specific medical universities distributed a questionnaire adapted from a Malaysian paper through social media platforms. Out of 1840 surveyed Syrian women, 64.2% were aged 21-29, and 69.6% held bachelor's degrees. Those with a bachelor's degree exhibited the highest mean knowledge score (12.86), and women previously diagnosed with PCOS had a higher mean knowledge score (13.74) than those without. Approximately 27.4% were confirmed PCOS cases, and 38.9% had possible cases. Women with PCOS were 3.41 times more likely to possess knowledge about the condition. The findings suggest a moderate level of PCOS knowledge and health-related practices among Syrian women, emphasizing the need for increased awareness. Consistent local PCOS screening programs, in collaboration with obstetrics and gynecology professionals, are crucial for improving understanding and clinical symptom recognition of this condition among Syrian women.
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Affiliation(s)
| | | | - Sarya Swed
- Faculty of Medicine, Aleppo University, Aleppo, Syria
| | | | - Ahmed Aljabali
- Faculty of Medicine, Jordan University of Science and Technology, Irbid, Jordan
| | - Lazaward Kazan
- Faculty of Medicine, Altınbaş University, Istanbul, Turkey
| | | | | | - Bisher Sawaf
- Department of Internal Medicine, Hamad Medical Corporation, Doha, Qatar
| | - Nourhan Eissa
- Faculty of Medicine, Damascus University, Damascus, Syria
| | - Meriam Alkasem
- Faculty of Medicine, Damascus University, Damascus, Syria
| | - Yasmine Edrees
- Faculty of Medicine, Damascus University, Damascus, Syria
| | | | | | - Gowhar Rashid
- Department of Amity Medical School, Amity University, Haryana, India
| | - Wael Hafez
- NMC Royal Hospital, Khalifa City, Abu Dhabi, United Arab Emirates
- Medical Research Division, Department of Internal Medicine, The National Research Centre, Cairo, Egypt
| | - Elrashed AbdElrahim
- Radiological Sciences Department, College of Applied Medical Sciences, Taif University, Taif, Saudi Arabia
| | - Hamid Osman
- Radiological Sciences Department, College of Applied Medical Sciences, Taif University, Taif, Saudi Arabia
| | - Talha Bin Emran
- Department of Pharmacy, BGC Trust University Bangladesh, Chittagong, Bangladesh
| | - Refat Khan Pathan
- Department of Computing and Information Systems, School of Engineering and Technology, Sunway University, Bandar Sunway, Malaysia
| | - Mayeen Uddin Khandaker
- Faculty of Graduate Studies, Daffodil International University, Daffodil Smart City, Dhaka, Bangladesh
- Applied Physics and Radiation Technologies Group, CCDCU, School of Engineering and Technology, Sunway University, Bandar Sunway, Malaysia
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Al Mahmud J, Siraz MMM, Alam MS, Dewan MJ, Rashid MB, Khandaker MU, Osman H, Tamam N, Yeasmin S. A pioneering study of the radiological mapping in the world's largest mangrove forest (the Sundarbans) and implications for the public and environment. Mar Pollut Bull 2024; 202:116349. [PMID: 38604081 DOI: 10.1016/j.marpolbul.2024.116349] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/14/2023] [Revised: 01/22/2024] [Accepted: 04/04/2024] [Indexed: 04/13/2024]
Abstract
Coastal Mangroves are facing growing threats due to the harmful consequences of human activities. This first-ever detailed study of natural radioactivity in soil samples collected from seven tourist destinations within the Sundarbans, the world's largest mangrove forest, was conducted using HPGe gamma-ray spectrometry. Although the activity levels of 226Ra (11 ± 1-44 ± 4 Bq/kg) and 232Th (13 ± 1-68 ± 6 Bq/kg) generally align with global averages, the concentration of 40K (250 ± 20-630 ± 55 Bq/kg) was observed to surpass the worldwide average primarily due to factors like salinity intrusion, fertilizer application, agricultural runoff, which suggests the potential existence of potassium-rich mineral resources near the study sites. The assessment of the hazard parameters indicates that the majority of these parameters are within the recommended limits. The soil samples do not pose a significant radiological risk to the nearby population. The results of this study can establish important radiological baseline data before the Rooppur Nuclear Power Plant begins operating in Bangladesh.
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Affiliation(s)
- Jubair Al Mahmud
- Department of Nuclear Engineering, University of Dhaka, Dhaka 1000, Bangladesh
| | - M M Mahfuz Siraz
- Health Physics Division, Atomic Energy Centre, Dhaka 1000, Bangladesh.
| | - M S Alam
- Department of Nuclear Engineering, Chittagong University of Engineering & Technology, Chattogram 4349, Bangladesh
| | - Md Jafor Dewan
- Department of Nuclear Engineering, University of Dhaka, Dhaka 1000, Bangladesh
| | - Md Bazlar Rashid
- Geological Survey of Bangladesh, Segunbaghicha, Dhaka 1000, Bangladesh
| | - Mayeen Uddin Khandaker
- Applied Physics and Radiation Technologies Group, CCDCU, School of Engineering and Technology, Sunway University, 47500 Bandar Sunway, Selangor, Malaysia; Faculty of Graduate Studies, Daffodil International University, Daffodil Smart City, Birulia, Savar, Dhaka 1216, Bangladesh
| | - Hamid Osman
- Department of Radiological Sciences, College of Applied Medical Sciences, Taif University, 21944 Taif, Saudi Arabia
| | - Nissren Tamam
- Department of Physics, College of Science, Princess Nourah bint Abdulrahman University, P.O. Box 84428, Riyadh 11671, Saudi Arabia
| | - S Yeasmin
- Health Physics Division, Atomic Energy Centre, Dhaka 1000, Bangladesh
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Bommireddipally J, Broussard K, Osman H, Uhlhorn A, Loganantharaj N. Gastrointestinal: A rare case of concurrent vulvar Crohn's disease and pyoderma gangrenosum. J Gastroenterol Hepatol 2024; 39:417-419. [PMID: 38030955 DOI: 10.1111/jgh.16393] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/26/2023] [Accepted: 10/10/2023] [Indexed: 12/01/2023]
Affiliation(s)
- J Bommireddipally
- Department of Internal Medicine, Tulane University School of Medicine, New Orleans, Louisiana, USA
| | - K Broussard
- Division of Gastroenterology, Louisiana State University School of Medicine, New Orleans, Louisiana, USA
| | - H Osman
- Department of Pathology, Tulane University School of Medicine, New Orleans, Louisiana, USA
| | - A Uhlhorn
- Division of Gastroenterology, Louisiana State University School of Medicine, New Orleans, Louisiana, USA
| | - N Loganantharaj
- Division of Gastroenterology, Louisiana State University School of Medicine, New Orleans, Louisiana, USA
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Miah MH, Khandaker MU, Aminul Islam M, Nur-E-Alam M, Osman H, Ullah MH. Perovskite materials in X-ray detection and imaging: recent progress, challenges, and future prospects. RSC Adv 2024; 14:6656-6698. [PMID: 38390503 PMCID: PMC10883145 DOI: 10.1039/d4ra00433g] [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] [Received: 01/17/2024] [Accepted: 02/07/2024] [Indexed: 02/24/2024] Open
Abstract
Perovskite materials have attracted significant attention as innovative and efficient X-ray detectors owing to their unique properties compared to traditional X-ray detectors. Herein, chronologically, we present an in-depth analysis of X-ray detection technologies employing organic-inorganic hybrids (OIHs), all-inorganic and lead-free perovskite material-based single crystals (SCs), thin/thick films and wafers. Particularly, this review systematically scrutinizes the advancement of the diverse synthesis methods, structural modifications, and device architectures exploited to enhance the radiation sensing performance. In addition, a critical analysis of the crucial factors affecting the performance of the devices is also provided. Our findings revealed that the improvement from single crystallization techniques dominated the film and wafer growth techniques. The probable reason for this is that SC-based devices display a lower trap density, higher resistivity, large carrier mobility and lifetime compared to film- and wafer-based devices. Ultimately, devices with SCs showed outstanding sensitivity and the lowest detectable dose rate (LDDR). These results are superior to some traditional X-ray detectors such as amorphous selenium and CZT. In addition, the limited performance of film-based devices is attributed to the defect formation in the bulk film, surfaces, and grain boundaries. However, wafer-based devices showed the worst performance because of the formation of voids, which impede the movement of charge carriers. We also observed that by performing structural modification, various research groups achieved high-performance devices together with stability. Finally, by fusing the findings from diverse research works, we provide a valuable resource for researchers in the field of X-ray detection, imaging and materials science. Ultimately, this review will serve as a roadmap for directing the difficulties associated with perovskite materials in X-ray detection and imaging, proposing insights into the recent status, challenges, and promising directions for future research.
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Affiliation(s)
- Md Helal Miah
- Applied Physics and Radiation Technologies Group, CCDCU, School of Engineering and Technology, Sunway University Bandar Sunway 47500 Selangor Malaysia
- Department of Physics, Bangabandhu Sheikh Mujibur Rahman Science and Technology University Gopalganj 8100 Bangladesh
| | - Mayeen Uddin Khandaker
- Applied Physics and Radiation Technologies Group, CCDCU, School of Engineering and Technology, Sunway University Bandar Sunway 47500 Selangor Malaysia
- Faculty of Graduate Studies, Daffodil International University Daffodil Smart City, Birulia, Savar Dhaka 1216 Bangladesh
| | - Mohammad Aminul Islam
- Department of Electrical Engineering, Faculty of Engineering, Universiti Malaya Kuala Lumpur 50603 Selangor Malaysia
| | - Mohammad Nur-E-Alam
- Institute of Sustainable Energy, Universiti Tenaga Nasional, Jalan IKRAM-UNITEN Kajang 43000 Selangor Malaysia
- School of Science, Edith Cowan University 270 Joondalup Drive Joondalup-6027 WA Australia
| | - Hamid Osman
- Department of Radiological Sciences, College of Applied Medical Sciences, Taif University 21944 Taif Saudi Arabia
| | - Md Habib Ullah
- Department of Physics, Faculty of Science and Technology, American International University-Bangladesh 408/1, Kuratoli, Khilkhet Dhaka 1229 Bangladesh
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Ahmed AM, Musa A, Medani A, Mahmoud M, Osman H, Elsamani M, Kajoak S, Alghamdi SS, Tajaldeen A, Hanfi MY, Khandaker MU. Establishment of a local diagnostic reference level for computed tomography chest and abdomen in two different cities in Saudi Arabia. Appl Radiat Isot 2024; 204:111147. [PMID: 38113663 DOI: 10.1016/j.apradiso.2023.111147] [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: 06/27/2023] [Revised: 11/04/2023] [Accepted: 12/11/2023] [Indexed: 12/21/2023]
Abstract
BACKGROUND AND AIM Spiral computed tomography (CT) scans, which are considered a high-contrast resolution, quick and cross-sectional imaging technique, have grown in popularity as a result of technological advancements. However, these advancements have brought with them the potential for significantly increased radiation doses to the patient. Consequently, many organizations recommended optimization and establishing diagnostic reference levels. The aim of the current study was to assess CT radiation dose and propose a local diagnostic reference level (LDRL) for the adult trunk [chest and abdomen] using CT dose parameters such as CT dose index volume (CTDIvol) and dose length product (DLP) as well as to compare the practices for aforementioned examinations between two hospitals in Taif and Abha cities in Saudi Arabia. MATERIALS AND METHODS Data from 428 patients (216 for abdomen and 212 for chest) who were examined in two hospitals in Taif and Abha City in Saudi Arabia from December 2022 to March 2023, are used in this study. The data for hospitals in Taif and Abha are presented as 'T' and 'A' throughout this manuscript. The parameters of exposure and slice thickness were recorded in a specially designed data sheet together with the gender, age and patients morphometric. Microsoft Excel version 2010 was used to analyze results and plot the figures. The LDRL was achieved from the third quartile of CTDIvol and DLP for each hospital and examination. RESULTS The average DLP (mGy-cm) and CTDIvol (mGy) for the chest and abdomen were 243 mGy cm, 5.8 mGy and 549 mGy cm, 8.6 mGy respectively. The average effective dose (ED) for chest and abdomen were 5.10 and 21.10 mSv, respectively. The proposed LDRL for the chest and abdomen were 6.9 mGy (CTDIvol), 375 mGy-cm (DLP), 7.8 mGy (CTDIvol), and 747 (DLP) mGy-cm, respectively. CONCLUSION Hospital 'A' irradiated patients with a higher dose for the abdomen exam than Hospital 'T', but both hospitals agreed on the amount of radiation dose received by patients for chest imaging. The proposed LDRL for two examinations was less than the DRL obtained from the literature.
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Affiliation(s)
- Amna Mohamed Ahmed
- Department of Radiological Sciences, College of Applied Medical Sciences, King Khalid University, Abha, Saudi Arabia
| | - Alamin Musa
- Department of Radiological Sciences, College of Applied Medical Sciences, King Khalid University, Abha, Saudi Arabia
| | - Afaf Medani
- Department of Radiological Sciences, College of Applied Medical Sciences, King Khalid University, Abha, Saudi Arabia
| | - Mustafa Mahmoud
- Department of Radiological Sciences, College of Applied Medical Sciences, King Khalid University, Abha, Saudi Arabia
| | - Hamid Osman
- Department of Radiological Sciences, College of Applied Medical Sciences, Taif University, 21944, Taif, Saudi Arabia.
| | - Mohammed Elsamani
- Department of Radiological Sciences, College of Applied Medical Sciences, Taif University, 21944, Taif, Saudi Arabia
| | - Samih Kajoak
- Department of Radiological Sciences, College of Applied Medical Sciences, Taif University, 21944, Taif, Saudi Arabia
| | - Salem Saeed Alghamdi
- Department of Applied Radiologic Technology, College of Applied Medical Sciences, University of Jeddah, Saudi Arabia
| | - Abdulrahman Tajaldeen
- Department of Applied Radiologic Technology, College of Applied Medical Sciences, University of Jeddah, Saudi Arabia
| | - Mohamed Y Hanfi
- Nuclear Materials Authority, P.O. Box 530 El-Maadi, Cairo, Egypt; Ural Federal University, St. Mira, 19, Yekaterinburg, 620002, Russia
| | - Mayeen Uddin Khandaker
- Applied Physics and Radiation Technologies Group, CCDCU, School of Engineering and Technology, Sunway University, Bandar Sunway, 47500, Malaysia; Daffodil International University, Daffodil Smart City, Birulia, Savar, Dhaka, 1216, Bangladesh
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Siraz MMM, Al Mahmud J, Alam MS, Rashid MB, Hossain Z, Osman H, Khandakar MU, Yeasmin S. Assessment of radioactivity level and associated radiological hazard in fertilizer from Dhaka. Environ Monit Assess 2024; 196:192. [PMID: 38263472 DOI: 10.1007/s10661-024-12328-4] [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: 08/03/2023] [Accepted: 01/05/2024] [Indexed: 01/25/2024]
Abstract
Miners, factory workers, traders, end-users, and foodstuff consumers all run the risk of encountering health hazards derived from the presence of elevated levels of radiation in fertilizers, as these groups often come into direct or indirect contact with fertilizers as well as raw materials throughout various linked processes such as mineral extractions, fertilizer production, agricultural practices. A total of 30 samples of various kinds of fertilizer produced in different factories in Dhaka megacity were analyzed to quantify the concentrations of primordial radionuclides using HPGe detector. Among the analyzed samples, average (range) concentration of 40K was found to be 9920 ± 1091 (8700 ± 957-11,500 ± 1265), 9100 ± 1001 (8600 ± 946-9600 ± 1056), 2565 ± 282 (2540 ± 279-2590 ± 285), and 3560 ± 392 (2620 ± 288-4500 ± 495) Bq/kg in the samples of Muriate of Potash Fertilizer, Sulphate of Potash Fertilizer, Humic Acid Fertilizer, and NPKS Fertilizer, respectively. Elevated concentration of 226Ra was found in Triple Super Phosphate Fertilizer with a mean (range) of 335 ± 37 (290 ± 32-380 ± 42) Bq/kg. The higher activity of 40K can be linked to the greater levels of elemental potassium in phosphate fertilizer. Elevated concentrations of radionuclides may also result from variations in chemical processes as well as the local geology of the mining areas where the raw materials were extracted for fertilizer production. Numerous fertilizer brands surpass prescribed limits for various hazardous parameters, presenting significant health risks to factory workers, farmers, and consumers of agricultural products. This study provides baseline information on the radioactivity of fertilizers, which could be used to develop mitigation methods, establish national fertilizer usage limits, justify regulatory frameworks, and raise public awareness of fertilizer overuse. The findings of the study could potentially help to explore the impact of fertilizer on the food chain.
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Affiliation(s)
- M M Mahfuz Siraz
- Health Physics Division, Atomic Energy Centre, Dhaka, 1000, Bangladesh.
| | - Jubair Al Mahmud
- Department of Nuclear Engineering, University of Dhaka, Dhaka, 1000, Bangladesh
| | - M S Alam
- Department of Nuclear Engineering, Chittagong University of Engineering & Technology, Chattogram, 4349, Bangladesh
| | - Md Bazlar Rashid
- Geological Survey of Bangladesh, Segunbaghicha, Dhaka, 1000, Bangladesh
| | - Zakir Hossain
- Health Physics Division, Atomic Energy Centre, Dhaka, 1000, Bangladesh
| | - Hamid Osman
- Department of Radiological Sciences, College of Applied Medical Sciences, Taif University, 21944, Taif, Saudi Arabia
| | - Mayeen Uddin Khandakar
- Applied Physics and Radiation Technologies Group, CCDCU, School of Engineering and Technology, Sunway University, 47500, Bandar Sunway, Malaysia
- Faculty of Graduate Studies, Daffodil International University, Daffodil Smart City, Birulia, Savar, Dhaka, 1216, Bangladesh
| | - Selina Yeasmin
- Health Physics Division, Atomic Energy Centre, Dhaka, 1000, Bangladesh
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Itas YS, Razali R, Tata S, Kolo M, Osman H, Idris AM, Khandaker MU. Structural, mechanical, electronic and optical properties of N-decorated single-walled silicon carbide nanotube photocatalyst for hydrogen evolution via water splitting: a DFT study. Sci Technol Adv Mater 2023; 24:2271912. [PMID: 38024795 PMCID: PMC10653548 DOI: 10.1080/14686996.2023.2271912] [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] [Received: 09/06/2023] [Accepted: 10/12/2023] [Indexed: 12/01/2023]
Abstract
This work investigates the fundamental photocatalytic properties of nitrogen-doped single-walled silicon carbide nanotubes (N-doped SWSiCNTs) for hydrogen evolution for the first time. Investigations of the structural, mechanical, electronic, and optical properties of the studied systems were carried out using popular density functional theory implemented in quantum ESPRESSO and Yambo codes. Analysis of the structural properties revealed high mechanical stability with the 3.6% and 7.4% N-doped SWSiCNT. The calculated band gap of the N-doped SWSiCNT with 3.6% demonstrated a value of 2.56 eV which is within the photocatalytic range of 2.3 eV-2.8 eV. The hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) potentials of the 3.6% N-doped SWSiCNT also showed good agreement with previous theoretical data. The studied material showed the best photocatalytic performance in both parallel and perpendicular directions by absorbing photons in the visible region. Therefore, the observed structural, mechanical, electronic and optical behaviors demonstrated by the 3.6% N-doped SWSiCNT exposed it as a better photocatalyst for hydrogen production under visible light.
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Affiliation(s)
- Yahaya Saadu Itas
- Department of Physics, Bauchi State University Gadau, Bauchi, Nigeria
| | - Razif Razali
- Department of Physics Faculty of Science, Universiti Teknologi Malaysia, Johor, Malaysia
| | - Salisu Tata
- Department of Physics, Bauchi State University Gadau, Bauchi, Nigeria
| | - Mohammed Kolo
- Department of Physics, Borno State University, Maiduguri, Nigeria
| | - Hamid Osman
- Department of Radiological Sciences, College of Applied Medical Sciences, Taif University, Taif, Saudi Arabia
| | - Abubakr M. Idris
- Department of Chemistry, College of Science, King Khalid University, Abha, Saudi Arabia
- Research Center for Advanced Materials Science (RCAMS), King Khalid University, Abha, Saudi Arabia
| | - Mayeen Uddin Khandaker
- Centre for Applied Physics and Radiation Technologies, School of Engineering and Technology, Sunway University, Bandar Sunway, Malaysia
- Faculty of Graduate Studies, Daffodil International University, Dhaka, Bangladesh
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Khandaker MU, Zayadi NSB, Sani SFA, Bradley DA, Osman H, Alzamil Y, Almeshari M, Sayyed MI, Sulieman A. Norm in cultivated honey in Malaysia and concomitant effective dose to consumers. Radiat Prot Dosimetry 2023; 199:2174-2178. [PMID: 37934995 DOI: 10.1093/rpd/ncad179] [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: 10/24/2022] [Revised: 05/20/2023] [Accepted: 05/30/2023] [Indexed: 11/09/2023]
Abstract
Present study concerns the radiological character of Malaysian honey. A total of 18 samples (representative of the various most common types) were obtained from various honey bee farms throughout the country. Using a high-purity germanium γ-ray spectroscopic system, the samples were analysed for the naturally occurring radionuclides 226Ra, 228Ra and 40K. The respective range of activities (in Bq/kg) was: 3.49 ± 0.35 to 4.51 ± 0.39, 0.99 ± 0.37 to 1.74 ± 0.39 and 41.37 ± 3.26 to 105.02 ± 6.91. The estimated associated committed effective doses were derived from prevailing data on national consumption of honey, the annual dose being found low compared with the UNSCEAR reference dose limit of 290 μSv y-1. The estimated threshold consumption rate for honey indicates a maximum intake of 339 g/d, which poses an insignificant radiological risk to public health; however, the total dietary exposure may not, the guidance level of 290 μSv y-1 being applicable to dietary intake of all foodstuffs. The study is in support of the cultivation of a healthy lifestyle, acknowledging prevailing radioactivity within the environment.
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Affiliation(s)
- Mayeen U Khandaker
- Center for Applied Physics and Radiation Technologies, School of Engineering and Technology, Sunway University, 47500 Bandar Sunway, Selangor, Malaysia
- Department of General Educational Development, Faculty of Science and Information Technology, Daffodil International University, DIU Rd, Dhaka 1341, Bangladesh
| | - Nurul S B Zayadi
- Department of Physics, Faculty of Science, University of Malaya, 50603 Kuala Lumpur, Malaysia
| | - Siti Fairus A Sani
- Department of Physics, Faculty of Science, University of Malaya, 50603 Kuala Lumpur, Malaysia
| | - David A Bradley
- Center for Applied Physics and Radiation Technologies, School of Engineering and Technology, Sunway University, 47500 Bandar Sunway, Selangor, Malaysia
- Department of Physics, University of Surrey, Guildford, Surrey GU2 7XH, United Kingdom
| | - Hamid Osman
- Department of Radiological Sciences, College of Applied Medical Sciences, Taif University, Taif 21944, Saudi Arabia
| | - Yasser Alzamil
- Department of Diagnostic Radiology, College of Applied Medical Sciences, University of Ha'il, P.O. Box 2240, Ha'il, Saudi Arabia
| | - Meshari Almeshari
- Department of Diagnostic Radiology, College of Applied Medical Sciences, University of Ha'il, P.O. Box 2240, Ha'il, Saudi Arabia
| | - M I Sayyed
- Department of Physics, Faculty of Science, Isra University, Amman 11622, Jordan
| | - Abdelmoneim Sulieman
- Department of Radiology and Medical Imaging, Prince Sattam Bin Abdulaziz University, P.O. Box 422, Al-Kharj 16278, Saudi Arabia
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Almaasfeh S, Abukonna A, Omer S, Osman H. Evaluation of Forced Expiratory Volume in One Second and Forced Vital Capacity from Age and Height for Pulmonary Function Test. West Afr J Med 2023; 40:1029-1034. [PMID: 37906250] [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] [Indexed: 11/02/2023]
Abstract
BACKGROUND Lung function tests (LFTs) are a collection of clinical examinations used to assess lung function and monitor potential declines in the lungs, respiratory muscles, and chest wall's mechanical performance. This cross-sectional study aimed to identify the relation of age and height to lung function. MATERIAL AND METHODS The study was conducted at AlHussein Medical City, 70 adult male subjects were enrolled in the study. All subjects were screened physically to ensure that they were normal and there were no respiratory disorders that could affect the lung function. Age and height were taken for these subjects, forced vital capacity (FVC), FEV1 (Forced expiratory volume in first second) as well as FEV1 /FVC ratio were measured. RESULTS The results of the study showed that the average values of FVC and FEV1 were 4.75 and 3.88 respectively. There was a significant negative correlation observed between age and FVC (r=0.48), FEV1 (r= 0.6). Also there was a significant positive correlation noticed between Height and FVC (r = 0.62), FEV1 (r =0.69). There was a very high correlation evidenced between FEV1 and FVC, the relation between FEV1 and FVC is practically height and age-independent. CONCLUSION Our study highlights a great interest in the study of the relation between age, height, and lung function. The study also creates simple and convenience equations that can be used for reference standards in clinical practice to give reasonable theoretical values for a large sector of the population.
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Affiliation(s)
- S Almaasfeh
- Al - Hussein bin Talal University, Princess Aisha Bint Al- Hussein College of Nursing and Health Science- Ma'an Jordan
| | - A Abukonna
- Sudan University of Science and Technology, College of Medical Radiologic Science - Khartoum Sudan
| | - S Omer
- Sudan University of Science and Technology, College of Medical Radiologic Science - Khartoum Sudan
| | - H Osman
- College of Applied Medical Science, Taif University, Taif, Saudi Arabia
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Itas Y, Suleiman AB, Ndikilar CE, Lawal A, Razali R, Ullah MH, Osman H, Khandaker MU. DFT Studies of the Photocatalytic Properties of MoS 2-Doped Boron Nitride Nanotubes for Hydrogen Production. ACS Omega 2023; 8:38632-38640. [PMID: 37867711 PMCID: PMC10586284 DOI: 10.1021/acsomega.3c05907] [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] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/10/2023] [Accepted: 09/18/2023] [Indexed: 10/24/2023]
Abstract
This study investigated the photocatalytic properties of MoS2-doped boron nitride nanotubes (BNNTs) for overall water splitting using popular density functional theory (DFT). Calculations of the structural, mechanical, electronic, and optical properties of the investigated systems were performed using both the generalized gradient approximation and the GW quasi-particle correction methods. In our calculations, it was observed that only (10, 10) and (12, 12) single-walled BNNTs (SWBNNTs) turned out to be stable toward MoS2 doping. Electronic property calculations revealed metallic behavior of (10, 10)-MoS2-doped SWBNNTs, while the band gap of (12, 12) SWBNNT was narrowed to 2.5 eV after MoS2 doping, which is within the obtained band gaps for other photocatalysts. Hence, MoS2 influences the conduction band of pure BNNT and improves its photocatalytic properties. The water-splitting photocatalytic behavior is found in (12, 12) MoS2-doped SWBNNT, which showed higher water oxidation (OH-/O2) and reduction (H+/H2) potentials. In addition, optical spectral calculations showed that MoS2-doped SWBNNT had an optical absorption edge of 2.6 eV and a higher absorption in the visible region. All of the studied properties confirmed MoS2-doped SWBNNT as a better candidate for next-generation photocatalysts for hydrogen evolution through the overall water-splitting process.
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Affiliation(s)
- Yahaya
Saadu Itas
- Department
of Physics, Bauchi State University Gadau, PMB 65, 751105 Gadau, Bauchi, Nigeria
| | | | | | - Abdullahi Lawal
- Department
of Physics, Federal College of Education
Zaria, PMB 1041, 810282 Kaduna, Nigeria
| | - Razif Razali
- Department
of Physics, Faculty of Science, Universiti
Teknologi Malaysia, 81310 Johor Bahru, Johor, Malaysia
| | - Md Habib Ullah
- Department
of Physics, American International University-Bangladesh
(AIUB), 408/1, Kuratoli, Khilkhet, 1229 Dhaka, Bangladesh
| | - Hamid Osman
- Department
of Radiological Sciences, College of Applied Medical Sciences, Taif University, 21944 Taif, Saudi Arabia
| | - Mayeen Uddin Khandaker
- Centre
for Applied Physics and Radiation Technologies, School of Engineering
and Technology, Sunway University, 47500 Bandar Sunway, Selangor, Malaysia
- Faculty
of Graduate Studies, Daffodil International
University, Daffodil Smart
City, Birulia, Savar, 1216 Dhaka, Bangladesh
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11
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Mitra S, Chakraborty AJ, Tareq AM, Emran TB, Nainu F, Khusro A, Idris AM, Khandaker MU, Osman H, Alhumaydhi FA, Simal-Gandara J. Corrigendum to “Impact of heavy metals on the environment and human health: Novel therapeutic insights to counter the toxicity” [J. King Saud Univ. – Sci. 34(3) (2022) 101865]. Journal of King Saud University - Science 2023; 35:102823. [DOI: 10.1016/j.jksus.2023.102823] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/01/2023]
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Khandaker MU, Abuzaid MM, Mohamed IA, Yousef M, Jastaniah S, Alshammari QT, Alghamdi SS, Osman H, Mohamed Ahmed A, Musa A, Ahmed Medani AM, Lam SE, Bradley DA. Investigation of the Radiographer's adherence and compliance with radiation protection and infection control practices during COVID-19 mobile radiography. Radiat Phys Chem Oxf Engl 1993 2023; 210:111023. [PMID: 37206369 PMCID: PMC10174468 DOI: 10.1016/j.radphyschem.2023.111023] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2023] [Revised: 05/08/2023] [Accepted: 05/10/2023] [Indexed: 05/21/2023]
Abstract
Radiological staff, especially radiographers, work as front liners against the COVID-19 outbreak. This study aims to assess compliance with radiation protection and infection control practices during COVID-19 mobile radiography procedures. This cross-sectional study included 234 radiographers (females, 56%, n = 131; males, 44%, n = 103) who were asked to complete an online questionnaire consisting of demographic data, radiation protection and infection control practices during COVID-19 portable cases, and knowledge and awareness. After informed consent was completed, SPSS statistical software was used for the data analysis. The most common age group of participants ranged from 18 to 25 years old (30.3%, n = 71). Bachelor's degree holders were 74.4% (n = 174). Most radiographers (39.7%, n = 93) had a working experience of 1-5 years, followed by 27.8% (n = 65) with more than 16 years of experience. Most respondents (62.4%, n = 146) handled approximately 1-5 cases daily, the majority of them (56%, n = 131) stated affirmatively they had obtained special training to handle COVID-19, and when inquired if they had received any special allowances for handling COVID-19 suspected/confirmed cases most of them stated negative (73.9%, n = 173). Most participants stated that they always wear a TLD during portable cases (67.1%, n = 157) and a lead apron (51.7%, n = 121). Around 73% (n = 171) knew the latest information on COVID-19 and attended the COVID-19 awareness course. A significant association was found between the work experience of the radiographers and their responses to following the best practices (p = 0.018, α = 0.05). Radiographers who had COVID-19 training (μ = 48.78) tend to adhere more to best practices than those who have not (p = 0.04, α = 0.05). Further, respondents who handled more than 16/more COVID-19 suspected/confirmed cases followed the best practices more (μ = 50.38) than those who handled less (p = 0.04, α = 0.05). This study revealed detailed information on radiation protection and infection control practices during COVID-19 mobile radiography. It has been observed that the participants/radiographers have good knowledge and awareness of radiation protection and infection-control practices. The present results may be used to plan future requirements regarding resources and training to ensure patient safety.
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Affiliation(s)
- Mayeen Uddin Khandaker
- Research Centre for Applied Physics and Radiation Technologies, School of Engineering and Technology, Sunway University, Bandar Sunway, 47500, Malaysia
- Department of General Educational Development, Faculty of Science and Information Technology, Daffodil International University, DIU Rd, Dhaka, 1341, Bangladesh
| | - Mohamed M Abuzaid
- University of Sharjah, College of Health Sciences, Department of Medical Diagnostic Imaging, Sharjah, United Arab Emirates
| | - Ikhlas A Mohamed
- Diagnostic Radiology Department, College of Medical Radiological Science, Sudan University of Science and Technology, Khartoum, Sudan
| | - Mohamed Yousef
- Radiologic Sciences Program, Batterjee Medical College, Jeddah, Saudi Arabia
| | - Saddig Jastaniah
- Radiologic Sciences Program, Batterjee Medical College, Jeddah, Saudi Arabia
| | - Qurain T Alshammari
- Diagnostic Radiology Department, College of Applied Medical Sciences, University of Hail, Hai'l, Saudi Arabia
| | - Salem Saeed Alghamdi
- Department of Applied Radiologic Technology, College of Applied Medical Sciences, University of Jeddah, Saudi Arabia
| | - Hamid Osman
- Department of Radiologic Sciences, College of Applied Medical Sciences, Taif University, Saudi Arabia
| | - Amna Mohamed Ahmed
- Department of Radiological Sciences, College of Applied Medical Sciences, King Khalid University, Abha, Saudi Arabia
| | - Alamin Musa
- Department of Radiological Sciences, College of Applied Medical Sciences, King Khalid University, Abha, Saudi Arabia
| | - Afaf Mohamed Ahmed Medani
- Department of Radiological Sciences, College of Applied Medical Sciences, King Khalid University, Abha, Saudi Arabia
| | - S E Lam
- Research Centre for Applied Physics and Radiation Technologies, School of Engineering and Technology, Sunway University, Bandar Sunway, 47500, Malaysia
| | - D A Bradley
- Research Centre for Applied Physics and Radiation Technologies, School of Engineering and Technology, Sunway University, Bandar Sunway, 47500, Malaysia
- Department of Physics, University of Surrey, Guidlford, GU2 7XH, United Kingdom
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Siraz MMM, Kamal MH, Khan ZH, Alam MS, Al Mahmud J, Rashid MB, Khandaker MU, Osman H, Yeasmin S. Evaluation of radioactivity in soil and rock samples from an undiscovered sea beach in the southeastern coastline of Bangladesh and associated health risk. Environ Monit Assess 2023; 195:1028. [PMID: 37558890 DOI: 10.1007/s10661-023-11636-5] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/05/2023] [Accepted: 07/24/2023] [Indexed: 08/11/2023]
Abstract
This study marks the first-ever assessment of radiological hazards linked to the sands and rocks of Patuartek Sea Beach, situated along one of the world's longest sea beaches in Cox' Bazar of Bangladesh. Through the utilization of an HPGe detector, a comprehensive analysis of the activity concentrations of 226Ra, 232Th, and 40 K was conducted, and their activity ranged from 7 to 23 Bq/kg, 9-58 Bq/kg, and 172-340 Bq/kg, respectively, in soils, and 19-24 Bq/kg, 27-39 Bq/kg, and 340-410 Bq/kg, respectively, in rocks. Some sand samples exhibited elevated levels of 232Th, while the rock samples displayed higher levels of 40 K compared to the global average. The radiological hazard parameters were assessed, and no values surpassed the recommended limits set by several international organizations. Hence, the sands and rocks of Patuartek sea beach pose no significant radiological risk to the residents or tourists. The findings of this study provide crucial insights for the development of a radiological baseline map in the country, which is important due to the commissioning of the country's first nuclear power plant Rooppur Nuclear Power Plant. The data may also stimulate interest in the rare-earth minerals present in the area, which is important for the electronics industry, thorium-based nuclear fuel cycles.
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Affiliation(s)
- M M Mahfuz Siraz
- Health Physics Division, Atomic Energy Centre, Dhaka, 1000, Bangladesh
| | - Md Hossain Kamal
- Department of Physics, University of Dhaka, Dhaka, 1000, Bangladesh
| | | | - M S Alam
- Department of Nuclear Engineering, University of Dhaka, Dhaka, 1000, Bangladesh
| | - Jubair Al Mahmud
- Department of Nuclear Engineering, University of Dhaka, Dhaka, 1000, Bangladesh
| | - Md Bazlar Rashid
- Geological Survey of Bangladesh, Segunbaghicha, Dhaka, 1000, Bangladesh
| | - Mayeen Uddin Khandaker
- Centre for Applied Physics and Radiation Technologies, School of Engineering and Technology, Sunway University, Selangor, 47500, Bandar Sunway, Malaysia
- Department of General Educational Development, Faculty of Science and Information Technology, Daffodil International University, DIU Rd, Dhaka, 1341, Bangladesh
| | - Hamid Osman
- Department of Radiological Sciences, College of Applied Medical Sciences, Taif University, 21944, Taif, Saudi Arabia
| | - S Yeasmin
- Health Physics Division, Atomic Energy Centre, Dhaka, 1000, Bangladesh.
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Hassanpour M, Hassanpour M, Uddin Khandaker M, Rashed Iqbal Faruque M, Alshahrani B, Osman H. An alternative method for calculation of half-value layers without the knowledge of attenuation coefficient. Appl Radiat Isot 2023; 199:110910. [PMID: 37379789 DOI: 10.1016/j.apradiso.2023.110910] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2023] [Revised: 05/10/2023] [Accepted: 06/21/2023] [Indexed: 06/30/2023]
Abstract
Radiation protection is crucial for the safe utilization of ionizing radiation and minimizing the harmful effect upon exposure, hence some standards have been defined by some relevant organizations for the safe uses of radiation. One of the parameters relevant to the calculation of gamma ray shielding is the half-value layer (HVL), which is normally calculated using the knowledge of linear attenuation coefficient (μ). In this research, an attempt has been made to directly calculate HVL without the knowledge of μ via Monte Carlo simulation technique. For this purpose, in the Monte Carlo N-Particle eXtended (MCNPX) code, F1, F5 and Mesh Popul sequences tallies were defined and the optimal structure for the least measurement error was introduced. The MCNPX calculated values showed reasonable agreement with the experimental findings. According to the obtained results, it is suggested that in order to reduce the error of HVL calculations, in exchange for the MCNPX code, the values of the R parameter and the radiation angle of the source should be considered according to the calculations introduced in this plan. Because the results show that by considering the measurement error between 6 and 20%, the code output can be cited in different energy ranges.
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Affiliation(s)
- Mehdi Hassanpour
- Space Science Centre (ANGKASA), Institute of Climate Change (IPI), Universiti Kebangsaan Malaysia, Malaysia.
| | - Marzieh Hassanpour
- Space Science Centre (ANGKASA), Institute of Climate Change (IPI), Universiti Kebangsaan Malaysia, Malaysia
| | - Mayeen Uddin Khandaker
- Centre for Applied Physics and Radiation Technologies, School of Engineering and Technology, Sunway University, Bandar Sunway, 47500, Selangor, Malaysia; Department of General Educational Development, Faculty of Science and Information Technology, Daffodil International University, DIU Rd, Dhaka, 1341, Bangladesh
| | | | - B Alshahrani
- Department of Physics, Faculty of Science, King Khalid University, P.O. Box 9004, Abha, Saudi Arabia
| | - Hamid Osman
- Department of Radiological Sciences, College of Applied Medical Sciences, Taif University, 21974, Saudi Arabia
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15
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Jahan MI, Faruque MRI, Hossain MB, Khandaker MU, Elsayed F, Salman M, Osman H. Quad-Band Metamaterial Perfect Absorber with High Shielding Effectiveness Using Double X-Shaped Ring Resonator. Materials (Basel) 2023; 16:4405. [PMID: 37374587 DOI: 10.3390/ma16124405] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/22/2023] [Revised: 05/21/2023] [Accepted: 06/05/2023] [Indexed: 06/29/2023]
Abstract
This study assesses quad-band metamaterial perfect absorbers (MPAs) based on a double X-shaped ring resonator for electromagnetic interference (EMI) shielding applications. EMI shielding applications are primarily concerned with the shielding effectiveness values where the resonance is uniformly or non-sequentially modulated depending on the reflection and absorption behaviour. The proposed unit cell consists of double X-shaped ring resonators, a dielectric substrate of Rogers RT5870 with 1.575 mm thickness, a sensing layer, and a copper ground layer. The presented MPA yielded maximum absorptions of 99.9%, 99.9%, 99.9%, and 99.8% at 4.87 GHz, 7.49 GHz, 11.78 GHz, and 13.09 GHz resonance frequencies for the transverse electric (TE) and transverse magnetic (TM) modes at a normal polarisation angle. When the electromagnetic (EM) field with the surface current flow was investigated, the mechanisms of quad-band perfect absorption were revealed. Moreover, the theoretical analysis indicated that the MPA provides a shielding effectiveness of more than 45 dB across all bands in both TE and TM modes. An analogous circuit demonstrated that it could yield superior MPAs using the ADS software. Based on the findings, the suggested MPA is anticipated to be valuable for EMI shielding purposes.
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Affiliation(s)
- Mst Ishrat Jahan
- Space Science Centre (ANGKASA), Institute of Climate Change (IPI), Universiti Kebangsaan Malaysia, Bangi 43600, Malaysia
| | - Mohammad Rashed Iqbal Faruque
- Space Science Centre (ANGKASA), Institute of Climate Change (IPI), Universiti Kebangsaan Malaysia, Bangi 43600, Malaysia
| | - Md Bellal Hossain
- Space Science Centre (ANGKASA), Institute of Climate Change (IPI), Universiti Kebangsaan Malaysia, Bangi 43600, Malaysia
| | - Mayeen Uddin Khandaker
- Centre for Applied Physics and Radiation Technologies, School of Engineering and Technology, Sunway University, Bandar Sunway, Petaling Jaya 47500, Malaysia
- Department of General Educational Development, Faculty of Science and Information Technology, Daffodil International University, DIU Rd, Dhaka 1341, Bangladesh
| | - Fahmi Elsayed
- College of Engineering & Technology, American University of the Middle East, Egaila 54200, Kuwait
| | - Mohammad Salman
- College of Engineering & Technology, American University of the Middle East, Egaila 54200, Kuwait
| | - Hamid Osman
- Department of Radiological Sciences, College of Applied Medical Sciences, Taif University, Taif 21944, Saudi Arabia
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16
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Khandaker MU, Nawi SNM, Lam SE, Sani SFA, Islam MA, Islam MA, Naseer KA, Osman H, Bradley DA. Thermoluminescent characterization and defect studies of graphite-rich media under high dose neutron exposure. Appl Radiat Isot 2023; 196:110771. [PMID: 36933313 DOI: 10.1016/j.apradiso.2023.110771] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2023] [Revised: 02/28/2023] [Accepted: 03/07/2023] [Indexed: 03/11/2023]
Abstract
Thermoluminescence (TL) materials have a broad variety of uses in various fields, such as clinical research, individual dosimetry, and environmental dosimetry, amongst others. However, the use of individual neutron dosimetry has been developing more aggressively lately. In this regard, present study establishes a relationship between the neutron dosage and the optical property changes of graphite-rich materials caused by high doses of neutron radiation. This has been done with the intention of developing a novel, graphite-based radiation dosimeter. Herein, the TL yield of commercially graphite-rich materials (i.e. graphite sheet, 2B and HB grade pencils) irradiated by neutron radiation with doses ranging from 250 Gy to 1500 Gy has been investigated. The samples were bombarded with thermal neutrons as well as a negligible amount of gamma rays, from the nuclear reactor TRIGA-II installed at the Bangladesh Atomic Energy Commission. The shape of the glow curves was observed to be independent of the given dosage, with the predominant TL dosimetric peak maintained within the region of 163 °C-168 °C for each sample. By studying the glow curves of the irradiated samples, some of the most well theoretical models and techniques were used to compute the kinetic parameters such as the order of kinetics (b), activation energy (E) or trap depth, frequency factor (s) or escape probability, and trap lifetime (τ). All of the samples were found to have a good linear response over the whole dosage range, with 2B grade of polymer pencil lead graphite (PPLGs) demonstrating a higher level of sensitivity than both HB grade and graphite sheet (GS) samples. Additionally, the level of sensitivity shown by each of them is highest at the lowest dosage that was given, and it decreases as the dose increases. Importantly, the phenomenon of dose-dependent structural modifications and internal annealing of defects has been observed by assessing the area of deconvoluted micro-Raman spectra of graphite-rich materials in high-frequency areas. This trend is consistent with the cyclical pattern reported in the intensity ratio of defect and graphite modes in previously investigated carbon-rich media. Such recurrent occurrences suggest the idea of employing Raman microspectroscopy as a radiation damage study tool for carbonaceous materials. The excellent responses of the key TL properties of the 2B grade pencil demonstrate its usefulness as a passive radiation dosimeter. As a consequence, the findings suggest that graphite-rich materials have the potential to be useful as a low-cost passive radiation dosimeter, with applications in radiotherapy and manufacturing.
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Affiliation(s)
- Mayeen Uddin Khandaker
- Centre for Applied Physics and Radiation Technologies, School of Engineering and Technology, 47500, Bandar Sunway, Selangor, Malaysia; Department of General Educational Development, Faculty of Science and Information Technology, Daffodil International University, DIURd, Dhaka, 1341, Bangladesh; MEU Research Unit, Middle East University, Airport Rd., 11831, Amman, Jordan.
| | - S N Mat Nawi
- Centre for Applied Physics and Radiation Technologies, School of Engineering and Technology, 47500, Bandar Sunway, Selangor, Malaysia; Department of Medical Sciences, School of Medical and Life Science, 47500, Bandar Sunway, Selangor, Malaysia
| | - S E Lam
- Centre for Applied Physics and Radiation Technologies, School of Engineering and Technology, 47500, Bandar Sunway, Selangor, Malaysia
| | - S F Abdul Sani
- Department of Physics, Faculty of Science, University of Malaya, 50603, Kuala Lumpur, Malaysia
| | - Mohammad Amirul Islam
- Institute of Nuclear Science & Technology, Atomic Energy Research Establishment, Bangladesh Atomic Energy Commission, Ganakbari, Ashulia, Dhaka, 1349, Bangladesh
| | - M A Islam
- Department of Electrical Engineering, Faculty of Engineering, Universiti Malaya, 50603, Kuala Lumpur, Malaysia
| | - K A Naseer
- Department of Physics, Farook College (Autonomous), Kozhikode, 673632, India
| | - Hamid Osman
- Department of Radiological Sciences, College of Applied Medical Sciences, Taif University, P.O. Box 2425, Taif, 21944, Saudi Arabia
| | - D A Bradley
- Centre for Applied Physics and Radiation Technologies, School of Engineering and Technology, 47500, Bandar Sunway, Selangor, Malaysia; Department of Physics, University of Surrey, Guildford, GU2 7XH, UK
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Alshalaggi S, Osman H, Elsamani M, Alshammari Q, Abdullah I, Almeshari M, Alkhybari E, Abanomy A, Khandaker MU, Alzamil Y. Pre-contrast CT calcium score correlation with significant risk factors for coronary artery disease. Journal of Radiation Research and Applied Sciences 2023. [DOI: 10.1016/j.jrras.2022.100516] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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18
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Almeshari M, Alzamil Y, Alyahyawi A, Abanomy A, Althmali O, Al-Enezi MS, C. G. S, Osman H, Khandaker MU. Awareness level, knowledge and attitude towards breast cancer among staff and students of Hail University, Saudi Arabia. PLoS One 2023; 18:e0282916. [PMID: 36921002 PMCID: PMC10016680 DOI: 10.1371/journal.pone.0282916] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2022] [Accepted: 02/27/2023] [Indexed: 03/16/2023] Open
Abstract
INTRODUCTION Awareness of screening procedures and illness warning signals is critical for expanding and implementing screening programs in society, which would improve the odds of early identification of breast cancer. OBJECTIVES This study aimed to evaluate the knowledge, awareness, attitudes, and practices related to breast cancer risk factors, signs, symptoms and methods of screening among female faculty and students at Hail University in the Kingdom of Saudi Arabia. METHODS A cross-sectional study was conducted from January 2021 through February 2021 in the Hail region of Saudi Arabia. A closed-ended questionnaire, which consisted of 37 questions, was distributed online (using a Google Forms link) in both English and Arabic languages. Data was collected from 425 female subjects who participated in the study. RESULTS The study showed an overall knowledge level of 46.36% regarding breast cancer. Participants had average knowledge about risk factors, signs, and symptoms, whereas their awareness and practice of breast self-examination and screening methods were weak. CONCLUSION The current study concluded that public awareness of breast cancer remains relatively low, and Saudi Arabia still needs several public awareness initiatives using mass media, such as television, the Internet, and radio, as well as social media. Special awareness programs should also be held in places where a large number of women can easily be reached, such as colleges, universities, and hospitals.
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Affiliation(s)
- Meshari Almeshari
- Department of Diagnostic Radiology, College of Applied Medical Sciences, University of Hail, Hail, Saudi Arabia
| | - Yasser Alzamil
- Department of Diagnostic Radiology, College of Applied Medical Sciences, University of Hail, Hail, Saudi Arabia
| | - Amjad Alyahyawi
- Department of Diagnostic Radiology, College of Applied Medical Sciences, University of Hail, Hail, Saudi Arabia
- Centre for Nuclear and Radiation Physics, Department of Physics, University of Surrey, Guildford, Surrey, United Kingdom
| | - Ahmad Abanomy
- Department of Radiological Sciences, College of Applied Medical Sciences, King Saud University, Riyadh, Saudi Arabia
| | - Omar Althmali
- Department of Physiotherapy, College of Applied Medical Sciences, University of Hail, Hail, Saudi Arabia
| | - Mamdouh S. Al-Enezi
- Department of Diagnostic Radiology, College of Applied Medical Sciences, University of Hail, Hail, Saudi Arabia
| | - ShashiKumar C. G.
- Department of Physiotherapy, College of Applied Medical Sciences, University of Hail, Hail, Saudi Arabia
| | - Hamid Osman
- Department of Radiological Sciences, College of Applied Medical Sciences, Taif University, Taif, Saudi Arabia
| | - Mayeen Uddin Khandaker
- Centre for Applied Physics and Radiation Technologies, School of Engineering and Technology, Sunway University, Bandar Sunway, Kuala Lumpur, Selangor, Malaysia
- Department of General Educational Development, Faculty of Science and Information Technology, Daffodil International University, Dhaka, Bangladesh
- * E-mail:
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Ramachandran T, Faruque MRI, Islam MT, Khandaker MU, Osman H, Boukhris I. Coding Metamaterial Analysis Based on 1-Bit Conventional and Cuboid Design Structures for Microwave Applications. Materials (Basel) 2022; 15:7447. [PMID: 36363039 PMCID: PMC9654001 DOI: 10.3390/ma15217447] [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] [Figures] [Subscribe] [Scholar Register] [Received: 08/28/2022] [Revised: 10/07/2022] [Accepted: 10/12/2022] [Indexed: 06/16/2023]
Abstract
This study aimed to investigate the compact 1-bit coding metamaterial design with various conventional and cuboid shapes by analysing the bistatic scattering patterns as well as the monostatic radar cross-section for microwave applications. The construction of this metamaterial design depends on binary elements. For example, 1-bit coding metamaterial comprises two kinds of unit cell to mimic both coding particles such as '0' and '1' with 0° and 180° phase responses. This study adopted a 1 mm × 1 mm of epoxy resin fibre (FR-4) substrate material, which possesses a dielectric constant of 4.3 and tangent loss of 0.025, to construct both elements for the 1-bit coding metamaterial. All simulations were performed using the well-known Computer Simulation Technology (CST) software. The elements were selected via a trial-and-error method based on the phase response properties of the designs. On the other hand, the phase response properties from CST software were validated through the comparison of the phase response properties of both elements with the analytical data from HFSS software. Clear closure was obtained from these findings, and it was concluded that the proposed conventional coding metamaterial manifested the lowest RCS values with an increasing number of lattices. However, the cuboid-shaped design with 20 lattices demonstrated an optimised bistatic scattering pattern of -8.49 dBm2. Additionally, the monostatic RCS values were successfully reduced within the 12 to 18 GHz frequency range with -30 to -10 dBm2 values. In short, the introduced designs were suitable for the proposed application field, and this unique phenomenon is described as the novelty of this study.
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Affiliation(s)
- Tayaallen Ramachandran
- Space Science Centre (ANGKASA), Institute of Climate Change (IPI), Universiti Kebangsaan Malaysia, Bangi 43600, Malaysia
| | - Mohammad Rashed Iqbal Faruque
- Space Science Centre (ANGKASA), Institute of Climate Change (IPI), Universiti Kebangsaan Malaysia, Bangi 43600, Malaysia
| | - Mohammad Tariqul Islam
- Department of Electrical, Electronic & Systems Engineering, Universiti Kebangsaan Malaysia, Bangi 43600, Malaysia
| | - Mayeen Uddin Khandaker
- Centre for Applied Physics and Radiation Technologies, School of Engineering and Technology, Sunway University, Bandar Sunway 47500, Malaysia
- Department of General Educational Development, Faculty of Science & Information Technology, Daffodil International University, DIU Road, Dhaka 1341, Bangladesh
| | - Hamid Osman
- Department of Radiological Sciences, College of Applied Medical Sciences, Taif University, Taif 21944, Saudi Arabia
| | - Imed Boukhris
- Department of Physics, Faculty of Science, King Khalid University, P.O. Box 9004, Abha 62529, Saudi Arabia
- Laboratoire des Matériaux Composites cÉramiques et Polymères (LaMaCoP), Département de Physique, Faculté des Sciences de Sfax BP 805, Université de Sfax, Sfax 3000, Tunisia
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Jibon FA, Khandaker MU, Miraz MH, Thakur H, Rabby F, Tamam N, Sulieman A, Itas YS, Osman H. Cancerous and Non-Cancerous Brain MRI Classification Method Based on Convolutional Neural Network and Log-Polar Transformation. Healthcare (Basel) 2022; 10:healthcare10091801. [PMID: 36141413 PMCID: PMC9499189 DOI: 10.3390/healthcare10091801] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2022] [Revised: 09/06/2022] [Accepted: 09/14/2022] [Indexed: 11/16/2022] Open
Abstract
Magnetic resonance imaging (MRI) offers visual representations of the interior of a body for clinical analysis and medical intervention. The MRI process is subjected to a variety of image processing and machine learning approaches to identify, diagnose, and classify brain diseases as well as detect abnormalities. In this paper, we propose an improved classification method for distinguishing cancerous and noncancerous tumors from brain MRI images by using Log Polar Transformation (LPT) and convolutional neural networks (CNN). The LPT has been applied for feature extraction of rotation and scaling of distorted images, while the integration of CNN introduces a machine learning approach for the tumor classification of distorted images. The dataset was formed with images of seven different brain diseases, and the training set was formed by applying CNN with the extracted features. The proposed method is then evaluated in comparison to state-of-the-art algorithms, showing a definite improvement of the former. The obtained results show that the machine learning approach offers better classification with a success rate of about 96% in both plain brain MR images and rotation- and scale-invariant brain MR images. This work also successfully classified T-1 and T-2 weighted images of neoplastic and degenerative brain diseases. The obtained accuracy is perfected by several kernel procedures, while the combined performance of the two wavelet transformations and a strong dataset make our method robust and efficient. Since no earlier study on machine learning approaches with rotated and scaled brain MRI has come to our attention, it is expected that our proposed method introduces a new paradigm in this research field.
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Affiliation(s)
- Ferdaus Anam Jibon
- Department of Computer Science and Engineering, University of Information Technology & Sciences (UITS), Dhaka 1000, Bangladesh
| | - Mayeen Uddin Khandaker
- Centre for Applied Physics and Radiation Technologies, School of Engineering and Technology, Sunway University, Bandar Sunway 47500, Selangor, Malaysia
- Department of General Educational Development, Faculty of Science and Information Technology, Daffodil International University, DIU Rd, Dhaka 1341, Bangladesh
- Correspondence:
| | - Mahadi Hasan Miraz
- Department of Business Analytics, Sunway University, Bandar Sunway 47500, Selangor, Malaysia
| | - Himon Thakur
- Department of Electrical Electronic & Communication Engineering, Military Institute of Science & Technology (MIST), Dhaka 1000, Bangladesh
| | - Fazle Rabby
- Department of Computer Science and Engineering, Sheikh Fazilatunnesa Mujib University (SFMU), Jamalpur 2000, Bangladesh
| | - Nissren Tamam
- Department of Physics, College of Sciences, Princess Nourah Bint Abdulrahman University, Riyadh 11671, Saudi Arabia
| | - Abdelmoneim Sulieman
- Department of Radiology and Medical Imaging, College of Applied Medical Sciences, Prince Sattam Bin Abdulaziz University, Al-Kharj 11942, Saudi Arabia
| | - Yahaya Saadu Itas
- Department of Physics, Bauchi State University Gadau, PMB 65, Gadau 751105, Nigeria
| | - Hamid Osman
- Department of Radiological Sciences, College of Applied Medical Sciences, Taif University, Taif 21944, Saudi Arabia
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Azmi MN, Hasmaruddin NS, Mat Ali NA, Osman H, Mohamad S, Parumasivam T, Hassan MZ, Abd Ghani MS, Awang K. Synthesis, characterization, anti-mycobacterial activity and in silico study of new 2,5-disubstituted-1,3,4-oxadiazole derivatives. Trop Biomed 2022; 39:467-475. [PMID: 36214446 DOI: 10.47665/tb.39.3.019] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
A series of new 2,5-disubstituted-1,3,4-oxadiazole derivatives (5a-j and 6a-j) have been designed and synthesized in four-steps. Sixteen compounds among the twenty compounds are reported for the first time. The compounds were characterized and confirmed by the FTIR, 1D- and 2D-NMR and HRMS analyses, and were tested against Mycobacterium smegmatis and Mycobacterium tuberculosis H37Ra. Compound 5d was the most active against M. smegmatis with MIC value of 25 µM, and exhibited cidal activity with MBC of 68 µM, respectively. The time-kill assay showed the good killing rate at 77% with the combination of isoniazid (INH). In addition, checkboard assay confirmed the interaction of compound 5d was categorised as additive. Docking simulation has been performed to position 5d into the pantothenate synthetase active site with binding free energy value -8.6 kcal mol-1. It also occupied the same active site as that of standard native ligand with similar interactions, which clearly indicate their potential as pantothenate synthetase inhibitor.
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Affiliation(s)
- M N Azmi
- School of Chemical Sciences, Universiti Sains Malaysia, 11800 Minden, Penang, Malaysia
| | - N S Hasmaruddin
- School of Chemical Sciences, Universiti Sains Malaysia, 11800 Minden, Penang, Malaysia
| | - N A Mat Ali
- School of Biological Sciences, Universiti Sains Malaysia, 11800 Minden, Penang, Malaysia
| | - H Osman
- School of Chemical Sciences, Universiti Sains Malaysia, 11800 Minden, Penang, Malaysia
| | - S Mohamad
- School of Biological Sciences, Universiti Sains Malaysia, 11800 Minden, Penang, Malaysia
| | - T Parumasivam
- School of Pharmaceutical Sciences, Universiti Sains Malaysia, 11800 Minden, Penang, Malaysia
| | - M Z Hassan
- Department of Pharmaceutical Chemistry, College of Pharmacy, King Khalid University, Abha, 62529, Saudi Arabia
| | - M S Abd Ghani
- School of Chemical Sciences, Universiti Sains Malaysia, 11800 Minden, Penang, Malaysia
| | - K Awang
- Department of Chemistry, Faculty of Science, University of Malaya, 50603 Kuala Lumpur, Malaysia
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JoJo P, Khandaker MU, Byju SB, Sunil A, Emran TB, Osman H, Almalki M, Alhumaydhi FA, Alghamdi S, Babalghith AO. Study of certain congenital malformations due to low-level radiation exposures from high background radiation areas. Journal of King Saud University - Science 2022; 34:102166. [DOI: 10.1016/j.jksus.2022.102166] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/01/2023]
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Mirzayev MN, Donkov AA, Popov EA, Demir E, Jabarov SH, Chkhartishvili LS, Adeojo SA, Doroshkevich AS, Sidorin AA, Asadov AG, Thabethe TT, Khandaker MU, Alamri S, Osman H, Trukhanov AV, Trukhanov SV. Modeling and X-ray Analysis of Defect Nanoclusters Formation in B4C under Ion Irradiation. Nanomaterials 2022; 12:nano12152644. [PMID: 35957074 PMCID: PMC9370675 DOI: 10.3390/nano12152644] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/17/2022] [Revised: 07/27/2022] [Accepted: 07/29/2022] [Indexed: 02/07/2023]
Abstract
In the presented work, B4C was irradiated with xenon swift heavy ions at the energy of 167 MeV. The irradiation of the substrate was done at room temperature to a fluence of 3.83 × 1014 ion/cm2. The samples were then analyzed with the X-ray diffraction technique to study the structural modification, as it can probe the region of penetration of xenon atoms due to the low atomic number of the two elements involved in the material under study. The nano-cluster formation under ion irradiation was observed. Positron lifetime (PLT) calculations of the secondary point defects forming nanoclusters and introduced into the B4C substrate by hydrogen and helium implantation were also carried out with the Multigrid instead of the K-spAce (MIKA) simulation package. The X-ray diffraction results confirmed that the sample was B4C and it had a rhombohedral crystal structure. The X-ray diffraction indicated an increase in the lattice parameter due to the Swift heavy ion (SHI) irradiation. In B12-CCC, the difference between τ with the saturation of H or He in the defect is nearly 20 ps. Under the same conditions with B11C-CBC, there is approximately twice the value for the same deviation.
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Affiliation(s)
- Matlab N. Mirzayev
- Institute of Radiation Problems, Azerbaijan National Academy of Sciences, Baku AZ-1143, Azerbaijan;
- Scientific-Research Institute Geotecnological Problems of Oil, Gas and Chemistry, Azerbaijan State Oil and Industry University, Baku AZ-1010, Azerbaijan
- Joint Institute for Nuclear Research, Dubna 141980, Russia; (A.A.D.); (E.A.P.); (A.S.D.); (A.A.S.); (A.G.A.)
- Correspondence: (M.N.M.); (S.V.T.)
| | - Alexander A. Donkov
- Joint Institute for Nuclear Research, Dubna 141980, Russia; (A.A.D.); (E.A.P.); (A.S.D.); (A.A.S.); (A.G.A.)
- Institute of Solid State Physics, Bulgarian Academy of Sciences, 1784 Sofia, Bulgaria
| | - Evgeni A. Popov
- Joint Institute for Nuclear Research, Dubna 141980, Russia; (A.A.D.); (E.A.P.); (A.S.D.); (A.A.S.); (A.G.A.)
- Institute of Solid State Physics, Bulgarian Academy of Sciences, 1784 Sofia, Bulgaria
- Institute for Nuclear Research and Nuclear Energy, Bulgarian Academy of Sciences, 1784 Sofia, Bulgaria
| | - Ertugrul Demir
- Physics Department, Yeditepe University, Istanbul 34755, Turkey;
| | - Sakin H. Jabarov
- Institute of Radiation Problems, Azerbaijan National Academy of Sciences, Baku AZ-1143, Azerbaijan;
| | - Levan S. Chkhartishvili
- Georgian Technical University, Tbilisi, 77, Kostava Str., 0160, Georgia;
- Ferdinand Tavadze Metallurgy and Materials Science Institute, Tbilisi, 8b, E. Mindeli St., 0186, Georgia
| | - Samuel A. Adeojo
- Department of Physics, University of Pretoria, Pretoria 0002, South Africa; (S.A.A.); (T.T.T.)
| | - Aleksandr S. Doroshkevich
- Joint Institute for Nuclear Research, Dubna 141980, Russia; (A.A.D.); (E.A.P.); (A.S.D.); (A.A.S.); (A.G.A.)
- Donetsk Institute for Physics and Engineering Named after O.O. Galkin NAS of Ukraine, 03028 Kyiv, Ukraine
| | - Alexey A. Sidorin
- Joint Institute for Nuclear Research, Dubna 141980, Russia; (A.A.D.); (E.A.P.); (A.S.D.); (A.A.S.); (A.G.A.)
| | - Asif G. Asadov
- Joint Institute for Nuclear Research, Dubna 141980, Russia; (A.A.D.); (E.A.P.); (A.S.D.); (A.A.S.); (A.G.A.)
- Institute of Physics, Azerbaijan National Academy of Sciences, Baku AZ-1143, Azerbaijan
| | - Thabsile T. Thabethe
- Department of Physics, University of Pretoria, Pretoria 0002, South Africa; (S.A.A.); (T.T.T.)
| | - Mayeen U. Khandaker
- Centre for Applied Physics and Radiation Technologies, School of Engineering and Technology, Sunway University, Bandar Sunway 47500, Malaysia;
- Department of General Educational Development, Faculty of Science and Information Technology, Daffodil International University, DIU Rd, Dhaka 1341, Bangladesh
| | - Sultan Alamri
- Radiological Sciences Department, College of Applied Medical Sciences, Taif University, Taif 21944, Saudi Arabia; (S.A.); (H.O.)
| | - Hamid Osman
- Radiological Sciences Department, College of Applied Medical Sciences, Taif University, Taif 21944, Saudi Arabia; (S.A.); (H.O.)
| | - Alex V. Trukhanov
- Laboratory of Magnetic Films Physics, SSPA “Scientific and Practical Materials Research Centre of NAS of Belarus”, 19, P. Brovki str., 220072 Minsk, Belarus;
- Smart Sensors Laboratory, Department of Electronic Materials Technology, National University of Science and Technology MISiS, 119049 Moscow, Russia
| | - Sergei V. Trukhanov
- Laboratory of Magnetic Films Physics, SSPA “Scientific and Practical Materials Research Centre of NAS of Belarus”, 19, P. Brovki str., 220072 Minsk, Belarus;
- Smart Sensors Laboratory, Department of Electronic Materials Technology, National University of Science and Technology MISiS, 119049 Moscow, Russia
- Correspondence: (M.N.M.); (S.V.T.)
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Anzum R, Habaebi MH, Islam MR, Hakim GPN, Khandaker MU, Osman H, Alamri S, AbdElrahim E. A Multiwall Path-Loss Prediction Model Using 433 MHz LoRa-WAN Frequency to Characterize Foliage's Influence in a Malaysian Palm Oil Plantation Environment. Sensors (Basel) 2022; 22:5397. [PMID: 35891077 PMCID: PMC9317254 DOI: 10.3390/s22145397] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/10/2022] [Revised: 07/12/2022] [Accepted: 07/13/2022] [Indexed: 06/15/2023]
Abstract
Palm oil is the main cash crop of tropical Asia, and the implementation of LPWAN (low-power wide-area network) technologies for smart agriculture applications in palm oil plantations will benefit the palm oil industry in terms of making more revenue. This research attempts to characterize the LoRa 433 MHz frequency channels for the available spreading factors (SF7-SF12) and bandwidths (125 kHz, 250 kHz, and 500 kHz) for wireless sensor networks. The LoRa channel modeling in terms of path-loss calculation uses empirical measurements of RSS (received signal strength) in a palm oil plantation located in Selangor, Malaysia. In this research, about 1500 LoS (line-of-sight) and 300 NLoS (non-line-of-sight) propagation measurement data are collected for path-loss prediction modeling. Using the empirical data, a prediction model is constructed. The path-loss exponent for LoS propagation of the proposed prediction model is found to be 2.34 and 2.9 for 125-250 kHz bandwidth and 500 kHz bandwidth, respectively. Again, for the NLoS propagation links, the attenuation per trunk is found to be 7.58 dB, 7.04 dB, 5.35 dB, 5.02 dB, 5.01 dB, and 5 dB for SF7-SF12, and the attenuation per canopy is found to be 9.32 dB, 7.96 dB, 6.2 dB, 5.89 dB, 5.79 dB, and 5.45 dB for SF7-SF12. Moreover, the prediction model is found to be the better choice (mean RMSE 2.74 dB) in comparison to the empirical foliage loss models (Weissberger's and ITU-R) to predict the path loss in palm oil plantations.
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Affiliation(s)
- Rabeya Anzum
- IoT & Wireless Communication Protocols Lab, Department of Electrical and Computer Engineering, Kulliyyah of Engineering (KOE), International Islamic University Malaysia (IIUM), Kuala Lumpur 53100, Malaysia; (R.A.); (M.R.I.); (G.P.N.H.)
| | - Mohamed Hadi Habaebi
- IoT & Wireless Communication Protocols Lab, Department of Electrical and Computer Engineering, Kulliyyah of Engineering (KOE), International Islamic University Malaysia (IIUM), Kuala Lumpur 53100, Malaysia; (R.A.); (M.R.I.); (G.P.N.H.)
| | - Md Rafiqul Islam
- IoT & Wireless Communication Protocols Lab, Department of Electrical and Computer Engineering, Kulliyyah of Engineering (KOE), International Islamic University Malaysia (IIUM), Kuala Lumpur 53100, Malaysia; (R.A.); (M.R.I.); (G.P.N.H.)
| | - Galang P. N. Hakim
- IoT & Wireless Communication Protocols Lab, Department of Electrical and Computer Engineering, Kulliyyah of Engineering (KOE), International Islamic University Malaysia (IIUM), Kuala Lumpur 53100, Malaysia; (R.A.); (M.R.I.); (G.P.N.H.)
- Department of Electrical Engineering, Faculty of Engineering, Universitas Mercu Buana, Jakarta 11650, Indonesia
| | - Mayeen Uddin Khandaker
- Centre for Applied Physics and Radiation Technologies, School of Engineering and Technology, Sunway University, Bandar Sunway 47500, Malaysia;
- Department of General Educational Development, Faculty of Science and Information Technology, Daffodil International University, DIU Rd, Dhaka 1341, Bangladesh
| | - Hamid Osman
- Department of Radiological Sciences, College of Applied Medical Sciences, Taif University, P.O. Box 2425, Taif 21944, Saudi Arabia; (H.O.); (S.A.); (E.A.)
| | - Sultan Alamri
- Department of Radiological Sciences, College of Applied Medical Sciences, Taif University, P.O. Box 2425, Taif 21944, Saudi Arabia; (H.O.); (S.A.); (E.A.)
| | - Elrashed AbdElrahim
- Department of Radiological Sciences, College of Applied Medical Sciences, Taif University, P.O. Box 2425, Taif 21944, Saudi Arabia; (H.O.); (S.A.); (E.A.)
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Osman H, Alosaimi M, Alghamdi F, Aljuaid A, Alqurashi M, Aldajani S, Faizo NL, Alamri S, Althobaiti YS, Khandaker MU, Suleiman A. Evaluation of CT dose and establishment of local DRLs for abdomen and pelvis examinations in hospitals in Taif City, Saudi Arabia. Radiat Phys Chem Oxf Engl 1993 2022. [DOI: 10.1016/j.radphyschem.2022.110206] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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26
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Mitra S, Chakraborty AJ, Tareq AM, Emran TB, Nainu F, Khusro A, Idris AM, Khandaker MU, Osman H, Alhumaydhi FA, Simal-Gandara J. Impact of heavy metals on the environment and human health: Novel therapeutic insights to counter the toxicity. Journal of King Saud University - Science 2022; 34:101865. [DOI: 10.1016/j.jksus.2022.101865] [Citation(s) in RCA: 200] [Impact Index Per Article: 100.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/01/2023]
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Riaz M, Altaf M, Ahmad P, Khandaker MU, Osman H, Eed EM, Shakir Y. Biogenic Synthesis of Ag Nanoparticles of 18.27 nm by Zanthozylum armatum and Determination of Biological Potentials. Molecules 2022; 27:molecules27041166. [PMID: 35208949 PMCID: PMC8880624 DOI: 10.3390/molecules27041166] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/29/2021] [Revised: 01/27/2022] [Accepted: 02/02/2022] [Indexed: 11/16/2022]
Abstract
Nanotechnology has become a dire need of the current era and the green synthesis of nanoparticles offers several advantages over other methods. Nanobiotechnology is an emerging field that contributes to many domains of human life, such as the formulation of nanoscale drug systems or nanomedicine for the diagnosis and treatment of diseases. Medicinal plants are the main sources of lead compounds, drug candidates and drugs. This work reports the green synthesis of Ag nanoparticles (AgNPs) using the aqueous bark extract of Zanthozylum armatum, which was confirmed by a UV absorption at 457 nm. XRD analysis revealed an average size of 18.27 nm and SEM showed the particles’ spherical shape, with few irregularly shaped particles due to the aggregation of the AgNPs. FT-IR revealed the critical functional groups of phytochemicals which acted as reducing and stabilizing agents. The bark extract showed rich flavonoids (333 mg RE/g) and phenolic contents (82 mg GAE/g), which were plausibly responsible for its high antioxidant potency (IC50 = 14.61 µg/mL). Extract-loaded AgNPs exhibited the highest but equal inhibition against E. coli and P. aeruginosa (Z.I. 11.0 mm), whereas methanolic bark extract inhibited to a lesser extent, but equally to both pathogens (Z.I. 6.0 mm). The aqueous bark extract inhibited P. aeruginosa (Z.I. 9.0 mm) and (Z.I. 6.0 mm) E. coli. These findings—especially the biosynthesis of spherical AgNPs of 18.27 nm—provide promise for further investigation and for the development of commercializable biomedical products.
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Affiliation(s)
- Muhammad Riaz
- Sulaiman Bin Abdullah Aba Al-Khail—Centre for Interdisciplinary, Research in Basic Science (SA-CIRBS), Faculty of Basic & Applied Sciences, International Islamic University, Islamabad 44000, Pakistan
- Correspondence: or
| | - Muhammad Altaf
- Department of Chemistry, University of AJK, Muzaffarabad 13100, Pakistan;
| | - Pervaiz Ahmad
- Department of Physics, University of Azad Jammu and Kashmir, Muzaffarabad 13100, Pakistan;
| | - Mayeen Uddin Khandaker
- Centre for Applied Physics and Radiation Technologies, School of Engineering and Technology, Sunway University, Bandar Sunway 47500, Malaysia;
| | - Hamid Osman
- Department of Radiological Sciences, College of Applied Medical Sciences, Taif University, Taif 21944, Saudi Arabia;
| | - Emad M. Eed
- Department of Clinical Laboratories Sciences, College of Applied Medical Sciences, Taif University, Taif 21944, Saudi Arabia;
| | - Yasmeen Shakir
- Department of Biochemistry, Hazara University, Mansehra 21120, Pakistan;
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Osman H, Raafat BM, Faizo NL, Ahmed RM, Alamri S, Alghamdi AJ, Almahwasi A, Alharbi M, Sulieman A, Khandaker MU. Exposure levels of CT and conventional X-ray procedures for radiosensitive pelvic organ in Saudi Arabia. Journal of Radiation Research and Applied Sciences 2021. [DOI: 10.1080/16878507.2021.2002005] [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] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Hamid Osman
- Radiological Sciences Department, College of Applied Medical Sciences, Taif University, Taif, Saudi Arabia
| | - Bassem M. Raafat
- Radiological Sciences Department, College of Applied Medical Sciences, Taif University, Taif, Saudi Arabia
| | - Nahla L. Faizo
- Radiological Sciences Department, College of Applied Medical Sciences, Taif University, Taif, Saudi Arabia
| | - Rania Mohammed Ahmed
- Radiological Sciences Department, College of Applied Medical Sciences, Taif University, Taif, Saudi Arabia
| | - Sultan Alamri
- Radiological Sciences Department, College of Applied Medical Sciences, Taif University, Taif, Saudi Arabia
| | - Ahmad Joman Alghamdi
- Radiological Sciences Department, College of Applied Medical Sciences, Taif University, Taif, Saudi Arabia
| | - Ashraf Almahwasi
- Medical Services, Ministry of Interior, Riyadh, Saudi Arabia
- Prince Sultan Complex, Deanship of Scientific Research, Central Laboratories, Taif University, Taif, Saudi Arabia
| | - M.K.M. Alharbi
- Radiological Sciences Department, College of Applied Medical Sciences, Taif University, Taif, Saudi Arabia
| | - A. Sulieman
- Radiology and Medical Imaging Department, College of Applied Medical Sciences, Prince Sattam Bin Abdulaziz University, Alkharj, Saudi Arabia
| | - Mayeen Uddin Khandaker
- Centre for Applied Physics and Radiation Technologies, School of Engineering and Technology, Sunway University, Bandar Sunway, Malaysia
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Osman H, Raafat BM, Faizo NL, Ahmed RM, Alamri S, Alghamdi AJ, Almahwasi A, Alharbi MKM, Sulieman A, Khandaker MU. Diagnostic reference level for adult pelvic examination in several hospitals of Taif and Kharaj city, Saudi Arabia. Appl Radiat Isot 2021; 180:110049. [PMID: 34864437 DOI: 10.1016/j.apradiso.2021.110049] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2021] [Revised: 11/19/2021] [Accepted: 11/24/2021] [Indexed: 11/19/2022]
Abstract
The current study was aimed to estimate the entrance surface air kerma (ESAK, mGy) for adult patients undergoing conventional radiography of Anteroposterior pelvis examination, and finally to establish a local diagnostic reference level (DRL). A total of 500 patients were exposed to diagnostic radiation in four hospitals (coded A, B, C, and D) in Taif and Kharaj city, Saudi Arabia, with different X-ray equipment specifications. Patient demographic data like age (y), body mass index (BMI) in kg/m2 as well as exposure factors and X-ray tube output were recorded. ESAK (mGy) was first calculated using the exposure data and tube output values, then the ESAK values were used to estimate entrance surface dose (ESD). The average BMI was 23.9 kg/m2. The mean tube potential used in A, B, C, and D hospitals and the corresponding estimated ESD were found to be 74.2, 69.8, 73, 76,7 kVp, and 2.54, 2.64, 2.94, 3.03 mGy respectively. The correlation coefficient between ESAK and BMI was found to be 0.98. When compared to computed radiography (CR), the conventional X-ray digital radiography reduces the radiation exposure in pelvic imaging by a factor of 1.18. The third quartile of median proposed a lower than the DRL of the previous studies.
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Affiliation(s)
- Hamid Osman
- Radiological Sciences Department, College of Applied Medical Sciences, Taif University, Saudi Arabia
| | - Bassem M Raafat
- Radiological Sciences Department, College of Applied Medical Sciences, Taif University, Saudi Arabia
| | - Nahla L Faizo
- Radiological Sciences Department, College of Applied Medical Sciences, Taif University, Saudi Arabia
| | - Rania Mohammed Ahmed
- Radiological Sciences Department, College of Applied Medical Sciences, Taif University, Saudi Arabia
| | - Sultan Alamri
- Radiological Sciences Department, College of Applied Medical Sciences, Taif University, Saudi Arabia
| | - Ahmad Joman Alghamdi
- Radiological Sciences Department, College of Applied Medical Sciences, Taif University, Saudi Arabia
| | - Ashraf Almahwasi
- Medical Services, Ministry of Interior, Saudi Arabia; Prince Sultan Complex, Deanship of Scientific Research, Central Laboratories, Taif University, Saudi Arabia
| | - M K M Alharbi
- Radiological Sciences Department, College of Applied Medical Sciences, Taif University, Saudi Arabia
| | - A Sulieman
- Radiology and Medical Imaging Department, College of Applied Medical Sciences, Prince Sattam bin Abdulaziz University, P.O.Box 422, Alkharj, 11942, Saudi Arabia
| | - Mayeen Uddin Khandaker
- Centre for Applied Physics and Radiation Technologies, School of Engineering and Technology, Sunway University, 47500, Bandar Sunway, Selangor, Malaysia.
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Lasheen ESR, Rashwan MA, Osman H, Alamri S, Khandaker MU, Hanfi MY. Radiological Hazard Evaluation of Some Egyptian Magmatic Rocks Used as Ornamental Stone: Petrography and Natural Radioactivity. Materials (Basel) 2021; 14:ma14237290. [PMID: 34885445 PMCID: PMC8658492 DOI: 10.3390/ma14237290] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/27/2021] [Revised: 11/24/2021] [Accepted: 11/25/2021] [Indexed: 11/17/2022]
Abstract
Magmatic rocks represent one of the most significant rocks due to their abundance, durability and appearance; they can be used as ornamental stones in the construction of dwellings. The current study is concerned with the detailed petrography and natural radioactivity of seven magmatic rocks. All are commercial granitic rocks and are identified as black Aswan, Nero Aswan, white Halayeb, Karnak, Verdi, red Hurghada and red Aswan. Their respective mineralogical compositions are classified as porpheritic granodiorite, granodiorite, tonalite, monzogranite, syenogranite, monzogranite and syenogranite. A total of nineteen samples were prepared from these seven rock types in order to assess their suitability as ornamental stones. Concentrations of 226Ra, 232Th and 40K radionuclides were measured using NaI (Tl) scintillation gamma-ray spectrometry. Among the studied magmatic rocks, white Halayeb had the lowest average values of 226Ra (15.7 Bq/kg), 232Th (4.71 Bq/kg) and 40K (~292 Bq/kg), all below the UNSCEAR reported average world values or recommended reference limits. In contrast, the other granitic rocks have higher values than the recommended limit. Except for the absorbed dose rate, other radiological hazard parameters including radium equivalent activity, annual effective dose equivalent, external, and internal hazard indices reflect that the White Halyeb rocks are favorable for use as ornamental stone in the construction of luxurious and high-demand residential buildings.
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Affiliation(s)
- El Saeed R. Lasheen
- Geology Department, Faculty of Science, Al-Azhar University, Cairo P.O. Box 11884, Egypt;
| | - Mohammed A. Rashwan
- Geological Sciences Department, National Research Centre, 33 El Bohooth St. (Former El Tahrir St.), Dokki, Giza P.O. Box 12622, Egypt;
| | - Hamid Osman
- Department of Radiological Sciences, College of Applied Medical Sciences, Taif University, Taif 21944, Saudi Arabia; (H.O.); (S.A.)
| | - Sultan Alamri
- Department of Radiological Sciences, College of Applied Medical Sciences, Taif University, Taif 21944, Saudi Arabia; (H.O.); (S.A.)
| | - Mayeen U. Khandaker
- Centre for Applied Physics and Radiation Technologies, School of Engineering and Technology, Sunway University, Bandar Sunway 47500, Malaysia;
| | - Mohamed Y. Hanfi
- Institute of Physics and Technology, Ural Federal University, St. Mira, 19, 620002 Yekaterinburg, Russia
- Nuclear Materials Authority, Maadi, Cairo P.O. Box 530, Egypt
- Correspondence: or ; Tel.: +7-(982)-646-63-57
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Islam F, Bibi S, Meem AFK, Islam MM, Rahaman MS, Bepary S, Rahman MM, Rahman MM, Elzaki A, Kajoak S, Osman H, ElSamani M, Khandaker MU, Idris AM, Emran TB. Natural Bioactive Molecules: An Alternative Approach to the Treatment and Control of COVID-19. Int J Mol Sci 2021; 22:12638. [PMID: 34884440 PMCID: PMC8658031 DOI: 10.3390/ijms222312638] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [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] [Received: 09/27/2021] [Revised: 11/11/2021] [Accepted: 11/19/2021] [Indexed: 02/07/2023] Open
Abstract
Several coronaviruses (CoVs) have been associated with serious health hazards in recent decades, resulting in the deaths of thousands around the globe. The recent coronavirus pandemic has emphasized the importance of discovering novel and effective antiviral medicines as quickly as possible to prevent more loss of human lives. Positive-sense RNA viruses with group spikes protruding from their surfaces and an abnormally large RNA genome enclose CoVs. CoVs have already been related to a range of respiratory infectious diseases possibly fatal to humans, such as MERS, SARS, and the current COVID-19 outbreak. As a result, effective prevention, treatment, and medications against human coronavirus (HCoV) is urgently needed. In recent years, many natural substances have been discovered with a variety of biological significance, including antiviral properties. Throughout this work, we reviewed a wide range of natural substances that interrupt the life cycles for MERS and SARS, as well as their potential application in the treatment of COVID-19.
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Affiliation(s)
- Fahadul Islam
- Department of Pharmacy, Daffodil International University, Dhaka 1207, Bangladesh; (F.I.); (A.F.K.M.); (M.M.I.); (M.S.R.); (S.B.); (M.M.R.); (M.M.R.)
| | - Shabana Bibi
- Yunnan Herbal Laboratory, College of Ecology and Environmental Sciences, Yunnan University, Kunming 650091, China;
- International Joint Research Center for Sustainable Utilization of Cordyceps Bioresources in China and Southeast Asia, Yunnan University, Kunming 650091, China
| | - Atkia Farzana Khan Meem
- Department of Pharmacy, Daffodil International University, Dhaka 1207, Bangladesh; (F.I.); (A.F.K.M.); (M.M.I.); (M.S.R.); (S.B.); (M.M.R.); (M.M.R.)
| | - Md. Mohaimenul Islam
- Department of Pharmacy, Daffodil International University, Dhaka 1207, Bangladesh; (F.I.); (A.F.K.M.); (M.M.I.); (M.S.R.); (S.B.); (M.M.R.); (M.M.R.)
| | - Md. Saidur Rahaman
- Department of Pharmacy, Daffodil International University, Dhaka 1207, Bangladesh; (F.I.); (A.F.K.M.); (M.M.I.); (M.S.R.); (S.B.); (M.M.R.); (M.M.R.)
| | - Sristy Bepary
- Department of Pharmacy, Daffodil International University, Dhaka 1207, Bangladesh; (F.I.); (A.F.K.M.); (M.M.I.); (M.S.R.); (S.B.); (M.M.R.); (M.M.R.)
| | - Md. Mizanur Rahman
- Department of Pharmacy, Daffodil International University, Dhaka 1207, Bangladesh; (F.I.); (A.F.K.M.); (M.M.I.); (M.S.R.); (S.B.); (M.M.R.); (M.M.R.)
| | - Md. Mominur Rahman
- Department of Pharmacy, Daffodil International University, Dhaka 1207, Bangladesh; (F.I.); (A.F.K.M.); (M.M.I.); (M.S.R.); (S.B.); (M.M.R.); (M.M.R.)
| | - Amin Elzaki
- Department of Radiological Sciences, College of Applied Medical Sciences, Taif University, Taif 21944, Saudi Arabia; (A.E.); (S.K.); (H.O.); (M.E.)
| | - Samih Kajoak
- Department of Radiological Sciences, College of Applied Medical Sciences, Taif University, Taif 21944, Saudi Arabia; (A.E.); (S.K.); (H.O.); (M.E.)
| | - Hamid Osman
- Department of Radiological Sciences, College of Applied Medical Sciences, Taif University, Taif 21944, Saudi Arabia; (A.E.); (S.K.); (H.O.); (M.E.)
| | - Mohamed ElSamani
- Department of Radiological Sciences, College of Applied Medical Sciences, Taif University, Taif 21944, Saudi Arabia; (A.E.); (S.K.); (H.O.); (M.E.)
| | - Mayeen Uddin Khandaker
- Centre for Applied Physics and Radiation Technologies, School of Engineering and Technology, Sunway University, Bandar Sunway 47500, Selangor, Malaysia;
| | - Abubakr M. Idris
- Department of Chemistry, College of Science, King Khalid University, Abha 62529, Saudi Arabia;
- Research Center for Advanced Materials Science (RCAMS), King Khalid University, Abha 62529, Saudi Arabia
| | - Talha Bin Emran
- Department of Pharmacy, BGC Trust University Bangladesh, Chittagong 4381, Bangladesh
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32
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Brishty SR, Hossain MJ, Khandaker MU, Faruque MRI, Osman H, Rahman SMA. A Comprehensive Account on Recent Progress in Pharmacological Activities of Benzimidazole Derivatives. Front Pharmacol 2021; 12:762807. [PMID: 34803707 PMCID: PMC8597275 DOI: 10.3389/fphar.2021.762807] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2021] [Accepted: 10/01/2021] [Indexed: 12/11/2022] Open
Abstract
Nowadays, nitrogenous heterocyclic molecules have attracted a great deal of interest among medicinal chemists. Among these potential heterocyclic drugs, benzimidazole scaffolds are considerably prevalent. Due to their isostructural pharmacophore of naturally occurring active biomolecules, benzimidazole derivatives have significant importance as chemotherapeutic agents in diverse clinical conditions. Researchers have synthesized plenty of benzimidazole derivatives in the last decades, amidst a large share of these compounds exerted excellent bioactivity against many ailments with outstanding bioavailability, safety, and stability profiles. In this comprehensive review, we have summarized the bioactivity of the benzimidazole derivatives reported in recent literature (2012-2021) with their available structure-activity relationship. Compounds bearing benzimidazole nucleus possess broad-spectrum pharmacological properties ranging from common antibacterial effects to the world's most virulent diseases. Several promising therapeutic candidates are undergoing human trials, and some of these are going to be approved for clinical use. However, notable challenges, such as drug resistance, costly and tedious synthetic methods, little structural information of receptors, lack of advanced software, and so on, are still viable to be overcome for further research.
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Affiliation(s)
- Shejuti Rahman Brishty
- Department of Clinical Pharmacy and Pharmacology, Faculty of Pharmacy, University of Dhaka, Dhaka, Bangladesh
| | - Md. Jamal Hossain
- Department of Pharmacy, State University of Bangladesh, Dhaka, Bangladesh
| | - Mayeen Uddin Khandaker
- Centre for Applied Physics and Radiation Technologies, School of Engineering and Technology, Sunway University, Bandar Sunway, Malaysia
| | | | - Hamid Osman
- Department of Radiological Sciences, College of Applied Medical Sciences, Taif University, Taif, Saudi Arabia
| | - S. M. Abdur Rahman
- Department of Clinical Pharmacy and Pharmacology, Faculty of Pharmacy, University of Dhaka, Dhaka, Bangladesh
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33
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Beattie E, Dowling J, Chardon JW, Kothary R, Lintern S, Amin R, Buffone T, Brais B, Campbell C, Gagnon C, Gonorazky H, Karamchandani J, Korngut L, McMillan H, Oskoui M, Osman H, Selby K, Wojtal D, Worsfold N, Lochmüller H. REGISTRIES AND CARE OF NMD. Neuromuscul Disord 2021. [DOI: 10.1016/j.nmd.2021.07.367] [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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34
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Hodgkinson-Brechenmacher V, McCormick A, Sheriko J, Lounsberry J, Osman H, Worsfold N, Campbell C, Mah J, McAdam L, Selby K, Korngut L, N. CNDR Investigator Network. DMD/BMD – OUTCOME MEASURES. Neuromuscul Disord 2021. [DOI: 10.1016/j.nmd.2021.07.146] [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: 11/16/2022]
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Al Hosani H, Salah M, Saade D, Osman H, Al Zahid J. United Arab Emirates National Newborn Screening Programme:an evaluation 1998-2000. East Mediterr Health J 2021. [DOI: 10.26719/2003.9.3.324] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
To evaluate the United Arab Emirate National Newborn Screening Programme we compared coverage, timeliness of programme indicators [age at sampling, recall and treatment initiation, timing of specimen delivery and laboratory results] and specimen quality with international st and ards. Recall rate, sensitivity, specificity, positive predictive values and relative incidence rates for phenylketonuria [PKU] and congenital hypothyroidism [CH] were calculated. Investigations for hypothyroidism included thyroid function studies [T3, T4, fT4 and TSH], technetium-99m thyroid scan when possible and thyroglobulin and thyroid antibodies when indicated. PKU investigations included plasma amino acids and measurement of biopterin defects. In the 6 years before December 2000, 138, 718 neonates were screened. Relative incidences for CH and for classic PKU were 1: 1570 and 1: 20, 050 respectively
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Elsafi M, El-Nahal MA, Alrashedi MF, Olarinoye OI, Sayyed MI, Khandaker MU, Osman H, Alamri S, Abbas MI. Shielding Properties of Some Marble Types: A Comprehensive Study of Experimental and XCOM Results. Materials (Basel) 2021; 14:ma14154194. [PMID: 34361388 PMCID: PMC8348320 DOI: 10.3390/ma14154194] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [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] [Received: 06/29/2021] [Revised: 07/19/2021] [Accepted: 07/23/2021] [Indexed: 11/16/2022]
Abstract
In this work, some marble types were collected from Egypt, and their shielding characteristics were estimated. Their rigidity, in addition to their elegant shape, led us to consider their use as a protective shield, in addition to making the workplace more beautiful. The mass attenuation coefficient (μ/ρ) was calculated for three types of marble (Breshia, Galala, and Trista) experimentally, using a narrow gamma ray source and high pure germanium (HPGe). The results obtained were compared with the XCOM program and indicated a very good agreement between the two methods. The linear attenuation coefficient (μ) was evaluated to calculate the half and tenth value layers. The maximum μ value of 1.055, 1.041, and 1.024 cm−1 was obtained for Breshia, Galala, and Trista, respectively, at 0.06 MeV. The mean free path for studying the materials was compared with other shielding materials and showed good results at different energy scales. The energy absorption (EABF) and exposure buildup factors (EBF) were determined at different mean free paths. The fast neutron removal cross section ΣR was calculated and expresses the ability of the marbles to slow down fast neutrons through multiple scattering. This is the ability of the marbles to shield fast neutrons.
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Affiliation(s)
- Mohamed Elsafi
- Physics Department, Faculty of Science, Alexandria University, Alexandria 21511, Egypt; (M.F.A.); (M.I.A.)
- Correspondence: or
| | - Mohamed A. El-Nahal
- Department of Environmental Studies, Institute of Graduate Studies and Research, Alexandria University, Alexandria 21526, Egypt;
| | - M. F. Alrashedi
- Physics Department, Faculty of Science, Alexandria University, Alexandria 21511, Egypt; (M.F.A.); (M.I.A.)
- Physics Department, College of Science and Arts, Al-Qassim University, Buraydah 52571, Saudi Arabia
| | - O. I. Olarinoye
- Department of Physics, Federal University of Technology, Minna 920271, Nigeria;
| | - M. I. Sayyed
- Department of Physics, Faculty of Science, Isra University, Amman 11622, Jordan;
- Department of Nuclear Medicine Research, Institute for Research and Medical Consultations, Imam Abdulrahman bin Faisal University, Dammam 31441, Saudi Arabia
| | - Mayeen Uddin Khandaker
- Centre for Applied Physics and Radiation Technologies, School of Engineering and Technology, Sunway University, Bandar Sunway 47500, Selangor, Malaysia;
| | - Hamid Osman
- Department of Radiological Sciences, College of Applied Medical Sciences, Taif University, Taif 21944, Saudi Arabia; (H.O.); (S.A.)
| | - Sultan Alamri
- Department of Radiological Sciences, College of Applied Medical Sciences, Taif University, Taif 21944, Saudi Arabia; (H.O.); (S.A.)
| | - M. I. Abbas
- Physics Department, Faculty of Science, Alexandria University, Alexandria 21511, Egypt; (M.F.A.); (M.I.A.)
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37
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Afsar SU, Faruque MRI, Hossain MJ, Khandaker MU, Osman H, Alamri S. Modified Hexagonal Split Ring Resonator Based on an Epsilon-Negative Metamaterial for Triple-Band Satellite Communication. Micromachines (Basel) 2021; 12:mi12080878. [PMID: 34442500 PMCID: PMC8398901 DOI: 10.3390/mi12080878] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [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] [Received: 06/29/2021] [Revised: 07/18/2021] [Accepted: 07/23/2021] [Indexed: 11/16/2022]
Abstract
A triple-band epsilon-negative (ENG) metamaterial based on a split ring resonator (SSR) with a modified hexagonal-shaped metal strip proposed in this study is a new combination of a single slit square resonator and a modified hexagonal-shaped metal strip. The desired unit cell FR-4 (lossy) that was selected as the substrate was 1.6 mm thick. Following the assessment of the unit cell, a high-frequency electromagnetic simulator like the computer simulation technology (CST) microwave studio was applied to assess the S-parameters. The proposed design exhibited resonance at 2.89, 9.42, and 15.16 GHz. The unit cell also demonstrated negative permittivity in the frequency ranges 2.912-3.728 GHz, 9.552-10.144 GHz, and 15.216-17.328 GHz, along with a negative refractive index. An effective medium ratio (EMR) of 11.53 is an indicator of the goodness of the metamaterial unit cell. It is deliberate at the lowermost resonance frequency of 2.89 GHz. Moreover, the simulated results that were validated using HFSS and equivalent circuit model indicated slight variations. The proposed design was finalised based on several parametric studies, including design optimisation, different unit cell sizes, various substrate materials, and different electromagnetic (EM) field propagations. The proposed triple band (S, X, and Ku bands) negative permittivity metamaterial unit cell can be utilised for various wireless applications, such as microwave communication, satellite communication, and long-distance radio communication.
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Affiliation(s)
- Salah Uddin Afsar
- Space Science Centre (ANGKASA), Institute of Climate Change (IPI), Universiti Kebangsaan Malaysia, Bangi 43600, Malaysia;
| | - Mohammad Rashed Iqbal Faruque
- Space Science Centre (ANGKASA), Institute of Climate Change (IPI), Universiti Kebangsaan Malaysia, Bangi 43600, Malaysia;
- Correspondence:
| | - Mohammad Jakir Hossain
- Department of Electrical and Electronic Engineering, Dhaka University of Engineering & Technology (DUET), Gazipur 1707, Bangladesh;
| | - Mayeen Uddin Khandaker
- Centre for Applied Physics and Radiation Technologies, School of Engineering and Technology, Sunway University, Bandar Sunway 47500, Malaysia;
| | - Hamid Osman
- Department of Radiological Sciences, College of Applied Medical Sciences, Taif University, Taif 21944, Saudi Arabia; (H.O.); (S.A.)
| | - Sultan Alamri
- Department of Radiological Sciences, College of Applied Medical Sciences, Taif University, Taif 21944, Saudi Arabia; (H.O.); (S.A.)
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38
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Zhao H, ParryFord F, Dabrera G, Sinnathamby M, Ellis J, Dunning J, Osman H, Machin N, Pebody R. Six-year experience of detection and investigation of possible Middle East Respiratory Syndrome coronavirus cases, England, 2012-2018. Public Health 2020; 189:141-143. [PMID: 33227597 PMCID: PMC7574929 DOI: 10.1016/j.puhe.2020.10.007] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2020] [Revised: 10/05/2020] [Accepted: 10/06/2020] [Indexed: 10/25/2022]
Abstract
OBJECTIVES Surveillance for Middle East Respiratory Syndrome (MERS) has been undertaken in the UK since September 2012. This study describes the surveillance outcomes in England from 2012 to 2018. STUDY DESIGN This was a descriptive study using surveillance data. METHODS Local health protection teams in England report possible MERS cases to the National Infection Service with clinical and laboratory data. RESULTS A total of 1301 possible MERS cases were identified in the study period. Five cases were laboratory-confirmed MERS. The majority of cases had travelled to Saudi Arabia (56.7%) and United Arab Emirates (25.9%). Fifty-four percent of cases were men and 43.7% were women. The majority of cases (65.1%) were aged 45 years or older. The number of tests increased in the period after Hajj each year. Laboratory-confirmed alternative diagnoses were available for 513 (39.4%) cases; influenza was the most common virus detected (n = 255, 52.4%). CONCLUSIONS Our study highlights the importance of differential diagnosis of influenza and other respiratory pathogens and early influenza antiviral treatment.
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Affiliation(s)
- H Zhao
- National Infection Service, Public Health England, 61 Colindale Avenue, London, NW9 5EQ, UK.
| | - F ParryFord
- National Infection Service, Public Health England, 61 Colindale Avenue, London, NW9 5EQ, UK
| | - G Dabrera
- National Infection Service, Public Health England, 61 Colindale Avenue, London, NW9 5EQ, UK
| | - M Sinnathamby
- National Infection Service, Public Health England, 61 Colindale Avenue, London, NW9 5EQ, UK
| | - J Ellis
- National Infection Service, Public Health England, 61 Colindale Avenue, London, NW9 5EQ, UK
| | - J Dunning
- National Infection Service, Public Health England, 61 Colindale Avenue, London, NW9 5EQ, UK
| | - H Osman
- Birmingham Public Health Laboratory, Birmingham Heartlands Hospital, Bordesley Green East, Birmingham, B9 5SS, UK
| | - N Machin
- Public Health Laboratory, Manchester, UK
| | - R Pebody
- National Infection Service, Public Health England, 61 Colindale Avenue, London, NW9 5EQ, UK
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Gherardi S, Bovolenta M, Passarelli C, Falzarano MS, Pigini P, Scotton C, Neri M, Armaroli A, Osman H, Selvatici R, Gualandi F, Recchia A, Mora M, Bernasconi P, Maggi L, Morandi L, Ferlini A, Perini G. Corrigendum to: "Transcriptional and epigenetic analyses of the DMD locus reveal novel cis-acting DNA elements that govern muscle dystrophin expression". [Biochim. Biophys. Acta Gene Regul. Mech. 2017 Nov;1860(11):1138-1147.]. Biochim Biophys Acta Gene Regul Mech 2020; 1863:194646. [PMID: 33144059 DOI: 10.1016/j.bbagrm.2020.194646] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Affiliation(s)
- S Gherardi
- Unit of Medical Genetics, Department of Medical Sciences, University of Ferrara, Italy; Department of Pharmacy and Biotechnology, University of Bologna, Bologna, Italy; CIRI Health Sciences & Technologies (HST), Bologna, Italy
| | - M Bovolenta
- Unit of Medical Genetics, Department of Medical Sciences, University of Ferrara, Italy
| | - C Passarelli
- Paediatric Hospital Bambino Gesù, Laboratory of Medical Genetics, Rome, Italy
| | - M S Falzarano
- Unit of Medical Genetics, Department of Medical Sciences, University of Ferrara, Italy
| | - P Pigini
- Department of Pharmacy and Biotechnology, University of Bologna, Bologna, Italy
| | - C Scotton
- Unit of Medical Genetics, Department of Medical Sciences, University of Ferrara, Italy
| | - M Neri
- Unit of Medical Genetics, Department of Medical Sciences, University of Ferrara, Italy
| | - A Armaroli
- Unit of Medical Genetics, Department of Medical Sciences, University of Ferrara, Italy
| | - H Osman
- Unit of Medical Genetics, Department of Medical Sciences, University of Ferrara, Italy
| | - R Selvatici
- Unit of Medical Genetics, Department of Medical Sciences, University of Ferrara, Italy
| | - F Gualandi
- Unit of Medical Genetics, Department of Medical Sciences, University of Ferrara, Italy
| | - A Recchia
- Department of Life Sciences, University of Modena & Reggio Emilia, Modena, Italy
| | - M Mora
- Neuromuscular Disease and Immunology Unit, Fondazione IRCCS Istituto Neurologico "C. Besta", Milan, Italy
| | - P Bernasconi
- Neuromuscular Disease and Immunology Unit, Fondazione IRCCS Istituto Neurologico "C. Besta", Milan, Italy
| | - L Maggi
- Neuromuscular Disease and Immunology Unit, Fondazione IRCCS Istituto Neurologico "C. Besta", Milan, Italy
| | - L Morandi
- Neuromuscular Disease and Immunology Unit, Fondazione IRCCS Istituto Neurologico "C. Besta", Milan, Italy
| | - A Ferlini
- Unit of Medical Genetics, Department of Medical Sciences, University of Ferrara, Italy; Neuromuscular Unit, Great Ormond Street Hospital, University College London, UK.
| | - G Perini
- Department of Pharmacy and Biotechnology, University of Bologna, Bologna, Italy; CIRI Health Sciences & Technologies (HST), Bologna, Italy.
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Amburgey K, Dowling J, Chardon JW, Kothary R, Stead-Coyle B, Brais B, Campbell C, Gagnon C, McMillan H, Selby K, Korngut L, Oskoui M, Amin R, Esler P, Worsfold N, Buffone T, Wojtal D, Osman H, Lochmüller H. REGISTRIES, CARE, QUALITY OF LIFE, MANAGEMENT OF NMD. Neuromuscul Disord 2020. [DOI: 10.1016/j.nmd.2020.08.344] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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41
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Hayes A, Nguyen D, Andersson M, Antón A, Bailly J, Beard S, Benschop KSM, Berginc N, Blomqvist S, Cunningham E, Davis D, Dembinski JL, Diedrich S, Dudman SG, Dyrdak R, Eltringham GJA, Gonzales‐Goggia S, Gunson R, Howson‐Wells HC, Jääskeläinen AJ, López‐Labrador FX, Maier M, Majumdar M, Midgley S, Mirand A, Morley U, Nordbø SA, Oikarinen S, Osman H, Papa A, Pellegrinelli L, Piralla A, Rabella N, Richter J, Smith M, Söderlund Strand A, Templeton K, Vipond B, Vuorinen T, Williams C, Wollants E, Zakikhany K, Fischer TK, Harvala H, Simmonds P. A European multicentre evaluation of detection and typing methods for human enteroviruses and parechoviruses using RNA transcripts. J Med Virol 2020; 92:1065-1074. [PMID: 31883139 PMCID: PMC7496258 DOI: 10.1002/jmv.25659] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2019] [Accepted: 12/24/2019] [Indexed: 12/28/2022]
Abstract
Polymerase chain reaction (PCR) detection has become the gold standard for diagnosis and typing of enterovirus (EV) and human parechovirus (HPeV) infections. Its effectiveness depends critically on using the appropriate sample types and high assay sensitivity as viral loads in cerebrospinal fluid samples from meningitis and sepsis clinical presentation can be extremely low. This study evaluated the sensitivity and specificity of currently used commercial and in-house diagnostic and typing assays. Accurately quantified RNA transcript controls were distributed to 27 diagnostic and 12 reference laboratories in 17 European countries for blinded testing. Transcripts represented the four human EV species (EV-A71, echovirus 30, coxsackie A virus 21, and EV-D68), HPeV3, and specificity controls. Reported results from 48 in-house and 15 commercial assays showed 98% detection frequencies of high copy (1000 RNA copies/5 µL) transcripts. In-house assays showed significantly greater detection frequencies of the low copy (10 copies/5 µL) EV and HPeV transcripts (81% and 86%, respectively) compared with commercial assays (56%, 50%; P = 7 × 10-5 ). EV-specific PCRs showed low cross-reactivity with human rhinovirus C (3 of 42 tests) and infrequent positivity in the negative control (2 of 63 tests). Most or all high copy EV and HPeV controls were successfully typed (88%, 100%) by reference laboratories, but showed reduced effectiveness for low copy controls (41%, 67%). Stabilized RNA transcripts provide an effective, logistically simple and inexpensive reagent for evaluation of diagnostic assay performance. The study provides reassurance of the performance of the many in-house assay formats used across Europe. However, it identified often substantially reduced sensitivities of commercial assays often used as point-of-care tests.
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Affiliation(s)
- A. Hayes
- Nuffield Department of MedicineUniversity of OxfordOxfordUK
| | - D. Nguyen
- Nuffield Department of MedicineUniversity of OxfordOxfordUK
| | - M. Andersson
- Microbiology Laboratory, John Radcliffe Hospital, Headley Way, HeadingtonOxfordUK
| | - A. Antón
- Respiratory Viruses Unit, Virology Section, Microbiology DepartmentHospital Universitari Vall d'Hebron, Vall d'Hebron Research Institute, Universitat Autònoma de Barcelona, Passeig Vall d'HebronBarcelonaSpain
| | - J.‐L. Bailly
- Université Clermont Auvergne, LMGE UMR CNRS, UFR MédecineClermont‐FerrandFrance
- CHU Clermont‐Ferrand, National Reference Center for EV and Parechovirus‐Associated LaboratoryClermont‐FerrandFrance
| | - S. Beard
- Enteric Virus Unit, Virus Reference DepartmentNational Infection Service, Public Health EnglandLondonUK
| | - K. S. M. Benschop
- National Institute for Public Health and the Environment (RIVM)BilthovenThe Netherlands
| | - N. Berginc
- Department for Public Health VirologyNational Laboratory of Health, Environment and FoodLjubljanaSlovenia
| | - S. Blomqvist
- National Institute for Health and Welfare, MannerheimintieHelsinkiFinland
| | - E. Cunningham
- Viapath Infection Sciences, St. Thomas' HospitalLondonUK
| | - D. Davis
- Microbiology, Virology and infection Prevention & ControlGreat Ormond Street Hospital for Children NHS Foundation TrustLondonUK
| | - J. L. Dembinski
- Department of VirologyNorwegian Institute of Public HealthOsloNorway
| | - S. Diedrich
- National Reference Center for Poliomyelitis and Enteroviruses, Robert Koch InstituteBerlinGermany
| | - S. G. Dudman
- Department of MicrobiologyOslo University Hospital Rikshospitalet, Inst. Clinical Medicine, University of OsloOsloNorway
| | - R. Dyrdak
- Department of Clinical MicrobiologyKarolinska University HospitalStockholmSweden
- Department of Microbiology, Tumor and Cell BiologyKarolinska InstituteStockholmSweden
| | - G. J. A. Eltringham
- Molecular Diagnostics Laboratory, Microbiology, Freeman HospitalNewcastle Upon TyneUK
| | - S. Gonzales‐Goggia
- Public Health England Poliovirus Reference Laboratory, National Infection Service, Public Health EnglandLondonUK
| | - R. Gunson
- West of Scotland Specialist Virology CentreGlasgow Royal InfirmaryGlasgowUK
| | - H. C. Howson‐Wells
- Nottingham University Hospitals NHS Trust, Clinical Microbiology, Queens Medical CentreNottinghamUK
| | - A. J. Jääskeläinen
- University of Helsinki and Helsinki University Hospital, HUSLAB, Virology and ImmunologyHelsinkiFinland
| | - F. X. López‐Labrador
- Virology Laboratory, Joint Units in Genomics and Health and Infection and Health, Fundación para el Fomento de la Investigación Sanitaria y Biomédica de la Comunidad Valenciana (FISABIO‐Public Health)/Universitat de València, Av. CatalunyaValènciaSpain
- CIBEResp, Centro de Investigación Biomédica en Red en Epidemiología y Salud Pública, Instituto de Salud Carlos IIIMadridSpain
| | - M. Maier
- Institute of VirologyLeipzig University HospitalLeipzigGermany
| | - M. Majumdar
- The National Institute for Biological Standards and ControlHertfordshireUK
| | - S. Midgley
- Department of Virus and Special Microbiological DiagnosticsVirus Surveillance and Research Section, Statens Serum InstitutCopenhagenDenmark
| | - A. Mirand
- CHU Clermont‐Ferrand, Laboratoire de Virologie—Centre National de Référence des Entérovirus et Parechovirus, Laboratoire Associé—Clermont‐FerrandFrance
| | - U. Morley
- UCD National Virus Reference LaboratoryUniversity College Dublin, BelfieldDublinIreland
| | - S. A. Nordbø
- Department of Medical MicrobiologySt. Olavs University HospitalTrondheimNorway
- Department of Clinical and Molecular Medicine, Faculty of Medicine and Health SciencesNorwegian University of Science and TechnologyTrondheimNorway
| | - S. Oikarinen
- Faculty of Medicine and Health TechnologyTampere UniversityTampereFinland
| | - H. Osman
- Public Health England Birmingham Public Health Laboratory, Heartlands HospitalBirminghamUK
| | - A. Papa
- Department of MicrobiologyMedical School, Aristotle University of ThessalonikiThessalonikiGreece
| | - L. Pellegrinelli
- Department of Biomedical Sciences for HealthUniversity of MilanMilanItaly
| | - A. Piralla
- Molecular Virology Unit, Microbiology and Virology DepartmentFondazione IRCCS Policlinico San MatteoPaviaItaly
| | - N. Rabella
- Virology Section, Santa Creu i Sant Pau University HospitalBarcelonaSpain
| | - J. Richter
- Department of Molecular VirologyCyprus Institute of Neurology and GeneticsNicosiaCyprus
| | - M. Smith
- Department of Biomedical Sciences for HealthUniversity of MilanMilanItaly
- King's College Hospital, Bessemer Wing, Denmark HillLondonUK
| | - A. Söderlund Strand
- Laboratory Medicine, Department of Clinical MicrobiologyLund University Hospital, SölvegatanLundSweden
| | - K. Templeton
- Edinburgh Specialist Virology, Royal Infirmary of EdinburghEdinburghUK
| | - B. Vipond
- Public Health England, South West Regional Laboratory, Pathology Sciences Building, Science QuarterSouthmead HospitalBristolUK
| | - T. Vuorinen
- Clinical MicrobiologyTurku University Hospital and Institute of Biomedicine University of TurkuTurkuFinland
| | | | - E. Wollants
- Clinical and Epidemiological Virology, KU Leuven, REGA Institute, Clinical and Epidemiological VirologyLeuvenBelgium
| | - K. Zakikhany
- Katherina Zakikhany‐Gilg, Public Health Agency of Sweden, Department of MicrobiologyUnit of Laboratory Surveillance of Viral Pathogens and Vaccine Preventable DiseasesStockholmSweden
| | - T. K. Fischer
- CIBEResp, Centro de Investigación Biomédica en Red en Epidemiología y Salud Pública, Instituto de Salud Carlos IIIMadridSpain
- Department of Virus and Special Microbiological DiagnosticsVirus Surveillance and Research Section, Statens Serum InstitutCopenhagenDenmark
| | - H. Harvala
- NHS Blood and Transplant, ColindaleLondonUK
| | - P. Simmonds
- Nuffield Department of MedicineUniversity of OxfordOxfordUK
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Li HY, Osman H, Kang CW, Ba T, Lou J. Numerical and experimental studies of water disinfection in UV reactors. Water Sci Technol 2019; 80:1456-1465. [PMID: 31961808 DOI: 10.2166/wst.2019.394] [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: 06/10/2023]
Abstract
Performance of UV reactors for water disinfection is investigated in this paper. Both experimental and numerical studies are performed on base reactor LP24. Enterobacteria phage MS2 is chosen as the challenge microorganism in the experiments. Experiments are conducted to evaluate the effect of different parameters, i.e. flow rate and UV transmission, on the reactor performance. Simulation is carried out based on the commercial software ANSYS FLUENT with user defined functions (UDFs) implemented. The UDF is programmed to calculate UV dose absorbed by different microorganisms along their flow trajectories. The effect with boundary layer mesh and without boundary layer mesh for LP24 is studied. The results show that the inclusion of boundary layer mesh does not have much effect on the reactor performance in terms of reduction equivalent dose (RED). The numerical results agree well with the experimental measurements, hence validating the numerical model. With this achieved, the numerical model is applied to study other scaled reactors: LP12, LP40, LP60 and LP80. Comparisons show that LP40 has the highest RED and log inactivation among all the reactors while LP80 has the lowest RED and log inactivation.
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Affiliation(s)
- H Y Li
- Institute of High Performance Computing (IHPC), Agency for Science, Technology and Research (A*STAR), 1 Fusionopolis Way, 16-16 Connexis, Singapore 138632, Singapore E-mail:
| | - H Osman
- Research & Development, Sembcorp Marine Ltd, 80 Tuas South Boulevard, Singapore 637051, Singapore
| | - C W Kang
- Institute of High Performance Computing (IHPC), Agency for Science, Technology and Research (A*STAR), 1 Fusionopolis Way, 16-16 Connexis, Singapore 138632, Singapore E-mail:
| | - T Ba
- Institute of High Performance Computing (IHPC), Agency for Science, Technology and Research (A*STAR), 1 Fusionopolis Way, 16-16 Connexis, Singapore 138632, Singapore E-mail:
| | - J Lou
- Institute of High Performance Computing (IHPC), Agency for Science, Technology and Research (A*STAR), 1 Fusionopolis Way, 16-16 Connexis, Singapore 138632, Singapore E-mail:
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Nishimiya K, Sharma G, Singh K, Osman H, Gardecki JA, Tearney GJ. P2772A novel approach for uric acid crystal detection in human coronary arteries with polarization-sensitive micro-OCT. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy565.p2772] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [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: 11/13/2022] Open
Affiliation(s)
- K Nishimiya
- Massachusetts General Hospital, Wellman Center for Photomedicine, Boston, United States of America
| | - G Sharma
- Massachusetts General Hospital, Wellman Center for Photomedicine, Boston, United States of America
| | - K Singh
- Massachusetts General Hospital, Wellman Center for Photomedicine, Boston, United States of America
| | - H Osman
- Massachusetts General Hospital, Wellman Center for Photomedicine, Boston, United States of America
| | - J A Gardecki
- Massachusetts General Hospital, Wellman Center for Photomedicine, Boston, United States of America
| | - G J Tearney
- Massachusetts General Hospital, Wellman Center for Photomedicine, Department of Pathology, Boston, United States of America
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Nishimiya K, Yin B, Piao Z, Osman H, Ryu J, Leung HM, Sharma G, Gardecki JA, Tearney GJ. P2271Super high-resolution OCT for endothelial cell visualization in the coronary arteries. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy565.p2271] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [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: 11/13/2022] Open
Affiliation(s)
- K Nishimiya
- Massachusetts General Hospital, Wellman Center for Photomedicine, Boston, United States of America
| | - B Yin
- Massachusetts General Hospital, Wellman Center for Photomedicine, Boston, United States of America
| | - Z Piao
- Massachusetts General Hospital, Wellman Center for Photomedicine, Boston, United States of America
| | - H Osman
- Massachusetts General Hospital, Wellman Center for Photomedicine, Boston, United States of America
| | - J Ryu
- Massachusetts General Hospital, Wellman Center for Photomedicine, Boston, United States of America
| | - H M Leung
- Massachusetts General Hospital, Wellman Center for Photomedicine, Boston, United States of America
| | - G Sharma
- Massachusetts General Hospital, Wellman Center for Photomedicine, Boston, United States of America
| | - J A Gardecki
- Massachusetts General Hospital, Wellman Center for Photomedicine, Boston, United States of America
| | - G J Tearney
- Massachusetts General Hospital, Wellman Center for Photomedicine, Department of Pathology, Boston, United States of America
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Maged A, Amin M, Osman H, Nada LM. Optical absorption spectroscopy of the blackberry dye applied in solar cell sensitizers and gamma radiation effects. Arab Journal of Nuclear Sciences and Applications 2018. [DOI: 10.21608/ajnsa.2018.2686.1043] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Sadyrbayeva F, Akhmetova G, Praliyev K, Osman H, Korotetskaya N. New Anti-Infective Preparations of Naphthyloxypropargylpiperidine Series. Eurasian Chem Tech J 2017. [DOI: 10.18321/ectj650] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
1-alkyl-4-(3-naphthyloxyprop-1-ynyl)piperidine-4-ols have been obtained by the condensation of 1-alkyl-pipieridin-4-ones with 1- and 2-naphthoxypropines by the Favorsky method in absolute diethylether, in the presence of powered technical KОН, under atmospheric pressure. Acylation of tertiary naphthoxypropynyl piperidols by cyclopropanecarbonylchloride has been carried out in order to introduce a cyclopropanecarbonyl fragment into the structures of naphthoxypropargylpiperidines. The obtained esters of cyclopropanecarboxylic acid represent crystalline substances with the definite melting temperature, very soluble in water, ethanol, acetone. The composition and structure of the synthesized compounds have been confirmed by the data of elemental analysis, IR-spectroscopy, NMR-spectroscopy, the identity has been confirmed by thin-layer chromatography. The compounds under the code AIP (anti-infective preparation) have been studied for an antimicrobial activity in relation to museum microbial strains. The effects of these preparations have been assessed in vitro in relation to Bacillus subtilis ATCC 6633, Escherichia coli ATCC 25922, Salmonella enterica ATCC 14028 and Staphylococcus aureus ATCC 6538- P. It has been found that the compounds AIP-30 and AIP-31 possess an antimicrobial activity in relation to all strains of microorganisms, engaged in the experiment. AIP- 30 and AIP-31 have antimicrobial effects to different extents, AIP-30 has displayed the highest activity in relation to the museum strain Bacillus subtilis ATCC 6633 in the concentration of 250 μg/ml. It has been established that AIP-32 displays a selective antimicrobial activity towards one type, and AIP-33 ‒ towards two types of the museum strains, engaged in the experiment.
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Kanesalingam K, Khan A, Osman H, Karat I, Laidlaw I, Daoud R. A retrospective study comparing early outcomes of prepectoral and subpectoral implant based breast reconstruction. Breast 2017. [DOI: 10.1016/s0960-9776(17)30360-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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Falzarano M, D'Amario D, Osman H, Siracusano A, Scotton C, Maroni C, Massetti M, Amodeo A, Mercuri E, Manchi M, Crea F, Ferlini A. Isolation and characterization of human urinary stem cells from healthy donors and DMD patients as in vitro cell model for functional studies and drug testing. Neuromuscul Disord 2016. [DOI: 10.1016/j.nmd.2016.06.262] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Scotton C, Schwartz E, Falzarano M, Bovolenta M, Rossi R, Armaroli A, Osman H, Gualandi F, Neri M, Lochmuller H, Pesole G, Sabatelli P, Merlini L, Bonaldo P, Muntoni F, Gelfi C, Lebowitz M, Esser K, Ferlini A. Transcriptomics analysis in collagen VI myopathy: Role of circadian genes using novel fluidic card tools. Neuromuscul Disord 2016. [DOI: 10.1016/j.nmd.2016.06.022] [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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