304 results on '"Ahmed, Hameed"'
Search Results
2. Evaluating IgG Levels, Vaccination Effects, and COVID-19 Infection Severity in Renal Transplant Recipients
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Zana Mohammed, Awny Jafar Ahmed, Majeed Hussein Mustafa, Domiana Shamoon Warda, Masood Ahmed Hameed, and Nawfal R. Hussein
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rental transplant ,covid-19 ,vaccination ,immunosuppression ,Medicine (General) ,R5-920 ,Gynecology and obstetrics ,RG1-991 ,Dermatology ,RL1-803 ,Pharmacy and materia medica ,RS1-441 ,Nursing ,RT1-120 ,Biology (General) ,QH301-705.5 - Abstract
Several studies have reported that different factors play an important role in the production of IgG after VOVID-19 vaccination. This study aimed at studying COVID-19 infection rates and severity in renal transplant recipients and vaccine responsiveness. comorbidity hemodialysis requirements, and immune suppression treatment regimens. In this cross-sectional study, IgG levels was measured in renal transplant recipients using automated benchtop immunoanalyzer Vidas at the Duhok Center for Kidney Disease and Transplantation. In this study group, only 30 individuals experienced the SARS-COVID-2 infection, with only three cases being severe. The most frequently reported symptoms of SARS-COVID-2 virus infection were fatigue (18/30) 60%, high temperature (17/30) 56%, headache (12/30) 40%, and poor endurance (11/30) 36.6%. The IgG titers were significantly different between the vaccinated 33.067 ± 2.5 versus unvaccinated individuals 23.916 ± 3.31with p value = 0.025. On the other hand, demographic characteristics of the cohort including: comorbidities, hemodialysis, different age groups, gender, infection/no-infection differences had no statistically significant impact on the IgG titers. Vaccination significantly increased the levels of protective IgG level in kidney transplant recipients. It is crucial to focus on increasing the acceptance of vaccination among kidney transplant recipients to prevent infections from other COVID-19 variants or pathogen outbreaks.
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- 2024
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3. Automatic Aircraft Landing System: A Review
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Afrah A. Ali, Nizar H. Abbas, and Ahmed Hameed Kaleel
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Automatic landing ,Flight control ,Turbulence ,Engineering (General). Civil engineering (General) ,TA1-2040 - Abstract
The aircraft landing phase, marking the finishing of a flight plane, is a critical yet dangerous aerial maneuver. Even though it might seem simple, predicting the complexities of performance during landing presents a big challenge due to the dynamic characteristics of the phase, interaction with piloting methods, as well as inherent uncertainties in aerodynamics. Landing is executed in close proximity to the ground at reduced airspeed, the landing phase entails an escalated safety risk. Notably, incidents and accidents, particularly overruns where aircraft fail to slow sufficiently on the runway before landing, underscore the imperative for advanced landing technologies. This paper presents a comprehensive review of research spanning from 2000 to the present exploring smart techniques like fuzzy logic and machine learning, an array of control strategies ranging from classic PID control to sophisticated hybrid control approaches, and optimization procedures utilizing diverse optimization algorithms. The primary objective is to provide a comprehensive evaluation of the existing research landscape, offering insights that can propel the evolution of strategies for safer and more efficient landings and making sure the plane touches down safely.
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- 2024
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4. Experimental and numerical analysis of multi-layer micro channel applied to parabolic solar concentrator
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Hamdi, Jenan Dakheel, Jalil, Jalal M., and Reja, Ahmed Hameed
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- 2024
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5. Uncovering Gender and Age Neutrality in CT Values for E and RdRp Gene Amplification in SARS-CoV-2
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Ibrahim A. Naqid, Masood Ahmed Hameed, Nawfal R. Hussein, and Shivan Hassan Yousif
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covid-19 ,sars-cov-2 ,rdrp gene ,e gene ,rt-pcr ,Medicine (General) ,R5-920 ,Gynecology and obstetrics ,RG1-991 ,Dermatology ,RL1-803 ,Pharmacy and materia medica ,RS1-441 ,Nursing ,RT1-120 ,Biology (General) ,QH301-705.5 - Abstract
The severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) pandemic poses a danger to public health across the world. Specific and sensitive testing is vital to tracking and containing the infected individuals. This study examines the characteristics of 705 patients based on gender and age groups, with a focus on their CT (Cycle Threshold) values associated with E- and RdRp gene amplification. Among the patient cohort, 58.87% were male, while 41.13% were female. Notably, all males and females tested positive for the E gene, achieving a 100% detection rate, whereas the RdRp gene exhibited a slightly lower positive rate of 93.4% in males and 89.6% in females. Statistical analysis through the chi-square test revealed no significant disparities between target genes and gender. Additionally, a one-way ANOVA test demonstrated no significant distinctions between target genes and age groups. This study's findings suggest that gender and age do not significantly influence CT values for E and RdRp gene amplification, and there is no preferred gene for detection, providing valuable insights into the molecular characteristics of the studied cohort.
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- 2023
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6. Experimental and numerical analysis of concentrating thermal system with four layers of micro-channels and phase change material
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Hamdi, Jenan Dakheel, Jalil, Jalal M., and Reja, Ahmed Hameed
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- 2024
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7. Myasthenia Gravis
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Ashraf Bhat, Faisal, primary, Iqubal, Ashif, additional, Shafi, Sadat, additional, Ahmed Hameed, Bakr, additional, Fayaz, Faizana, additional, Kareem, Ozaifa, additional, and Hyder Pottoo, Faheem, additional
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- 2023
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8. Novel azapropazone voltammetric sensors based on zinc oxide nanostructure
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Zehbah A. Al-Ahmed, Ahmed Hameed, Ahmed Alharbi, Rami A. Pashameah, Turki M. Habeebullah, and Nashwa M. El-Metwaly
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Azapropazone sensor ,nano zinc oxide ,differential pulse voltammetry ,oxidation mechanism ,biological samples ,Science (General) ,Q1-390 - Abstract
Azapropazone (AZA) is anti-inflammatory drug for treatment of arthritic conditions with low side effect. The construction and electroanalytical uses of brand-new AZA voltammetric sensor are demonstrated. Working carbon paste electrodes integrated with 5.0% ZnONPs exhibited proper catalytic effect toward oxidation of AZA molecule. At pH 5.0, AZA recorded single irreversible anodic oxidation at 0.462 V. Based on CV registered at variable conditions, oxidation of AZA molecule by one proton and two electrons of N16 with de-localized lone pair of electrons. Calibration graphs showed good linearity within AZA concentration from 19.5 to 1040.75 ng mL−1 with LOD and LOQ values of 1.67 and 5.6 ng mL−1. The presented sensor showed improved LOQ and LOD values. Also, electrooxidation mechanism of AZA molecule and EIS of sensors were reported. The proposed analytical approach was examined for sensitive voltammetric determination of azapropazone in pharmaceutical formulations and biological fluids with agreeable recoveries.
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- 2023
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9. التوظيف السياسي للصورة
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Ahmed Hameed Mohammed and Bushra Jameel Al-rawi
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الصورة ,السيميائية ,مصطفى الكاظمي ,التوظيف ,Journalism. The periodical press, etc. ,PN4699-5650 - Abstract
يهدف البحث الى معرفة ما تود الصورة إبلاغه بوصفها نصًا بصريًا، إذ أن الصور لا يتم التقاطها اعتباطًا، ولا سيما صور السياسيين، إذ لكل صورة رسالة حتى وإن اختلفت توجهات تفسير تلك الرسالة بين شخص وآخر، وقد اعتمد البحث على تطبيق منهجية قائمة على التحليل السيميائي بتطبيق نموذج لوران جيرفيرو في تحليل صورة زيارة رئيس الوزراء العراقي مصطفى الكاظمي للفلوجة في ذكرى الانتصار على داعش، وكون هذه الصور لغة مبنية على جملة من الدلائل البصرية أو الايقونية التي تندمج فيما بينها لتكون صورة ذات موضوع معين تحمل رسالة محددة أراد المرسل إيصالها الى الجمهور، كما وتكشف عن إيديولوجية المصور الذي يختار جزءًا من الحدث ليوجه إليه كاميرته. وتوصل البحث إلى نتائج عدّة منها: إن الأفكار والمعاني التي تضمنتها الصورة شكلًا ومضمونًا تنصب في إطار التسويق السياسي لشخصية رئيس الوزراء العراقي مصطفى الكاظمي، فضلًا عن ابرازه كشخصية قوية حادة الملامح، واستندت أساليب بلاغة الصورة بالتأكيد على وحدة المصير ونبذ الطائفية والقومية، إذ ساعد التنوع والتدرّج الوظيفي للكاظمي في مجال الصحافة والتوثيق التاريخي باكتسابه خبرة فن الظهور والتأثير في المتلقي، فضلًا عن عمله سابقًا في حقل حساس وهو المخابرات.
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- 2023
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10. The Effect of Duration of Stress Urinary Incontinence on developing Signs of Bladder Outlet Obstruction in Urodynamic Study
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Saif AM. Abdul-Hameed, Salam Madhi Shahid, Ahmed Hameed Lafta Alsaadi, Harth Mohamed Kamber, Qais Abdulazziz Abdulmottaleb, Razzaq Hashim Mohammed, and Wael Mohamed Kamber
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Urinary incontinence ,Stress urinary incontinence ,Mixed urinary incontinence ,Urodynamics ,Bladder outlet obstruction ,Medicine - Abstract
Background: Stress urinary incontinence is a frequent urological disease in women; it has a great influence on an individual’s wellbeing and places a significant economic strain on any health service. The placement of urodynamic diagnostic tests in the evaluation route is an important clinical research concern in this field. Objective: to find out whether the duration of stress urinary incontinence is associated with the finding of bladder outlet obstruction in urodynamic study or not. Subjects and Methods: A descriptive study. With enrolled female patients had symptomatic Stress urinary incontinence as their primary complain. All the included patients were assessed thoroughly by history taking and physical examination and relevant clinical tests and investigation in addition to urodynamic evaluation consisted of multi-channel urodynamics measuring abdominal, vesical and detrusor pressures simultaneously. Results: 140 females were suffering from stress incontinence. Urodynamic study showed maximum urine flow rate (Q max) mean of (20.45±9.86) ml/second, the maximum post void volume was 500ml with 36.89ml was the mean of post void residual volume, and 90.83cm water was the mean of urethral occlusion pressure. The mean of duration have positive relationship with age category but without statically significant. Ninety-eight patients have Q max flow more than 25ml/sec with mean duration 6.04 without any statically significant (p=0.872). 37 patients were having >0 ml post void volume with mean duration more than other patients that didn’t have post void volume but without statically significant (p=0.257). All patients with urethral pressure less than 120 cm had long duration mean than others but without statically significant (p=0.335). also, no statistical significance association between mean of duration and sphincter pelvic floor electromyogram (EMG). Conclusion: there was no catechistically significant relationship between the urodynamic findings and the duration neither of stress urinary incontinence nor between the urodynamic findings and the age of the patients.
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- 2023
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11. Exploring the natural products chemical space through a molecular search to discover potential inhibitors that target the hypoxia-inducible factor (HIF) prolyl hydroxylase domain (PHD)
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Abrar Mohammad Sayaf, Saif Ullah Khalid, Jawad Ahmed Hameed, Abdulrahman Alshammari, Abbas Khan, Anwar Mohammad, Saeed Alghamdi, Dong-Qing Wei, and KarKheng Yeoh
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HIF ,molecular screening ,natural products ,molecular simulation ,binding free energy ,Therapeutics. Pharmacology ,RM1-950 - Abstract
Introduction: Hypoxia-inducible factor (HIF) prolyl hydroxylase domain (PHD) enzymes are major therapeutic targets of anemia and ischemic/hypoxia diseases. To overcome safety issues, liver failure, and problems associated with on-/off-targets, natural products due to their novel and unique structures offer promising alternatives as drug targets.Methods: In the current study, the Marine Natural Products, North African, South African, East African, and North-East African chemical space was explored for HIF-PHD inhibitors discovery through molecular search, and the final hits were validated using molecular simulation and free energy calculation approaches.Results: Our results revealed that CMNPD13808 with a docking score of −8.690 kcal/mol, CID15081178 with a docking score of −8.027 kcal/mol, CID71496944 with a docking score of −8.48 kcal/mol and CID11821407 with a docking score of −7.78 kcal/mol possess stronger activity than the control N-[(4-hydroxy-8-iodoisoquinolin-3-yl)carbonyl]glycine, 4HG (−6.87 kcal/mol). Interaction analysis revealed that the target compounds interact with Gln239, Tyr310, Tyr329, Arg383 and Trp389 residues, and chelate the active site iron in a bidentate manner in PHD2. Molecular simulation revealed that these target hits robustly block the PHD2 active site by demonstrating stable dynamics. Furthermore, the half-life of the Arg383 hydrogen bond with the target ligands, which is an important factor for PHD2 inhibition, remained almost constant in all the complexes during the simulation. Finally, the total binding free energy of each complex was calculated as CMNPD13808-PHD2 −72.91 kcal/mol, CID15081178-PHD2 −65.55 kcal/mol, CID71496944-PHD2 −68.47 kcal/mol, and CID11821407-PHD2 −62.06 kcal/mol, respectively.Conclusion: The results show the compounds possess good activity in contrast to the control drug (4HG) and need further in vitro and in vivo validation for possible usage as potential drugs against HIF-PHD2-associated diseases.
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- 2023
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12. Relation between macrophage inflammatory protein-1 and intercellular adhesion molecule-1 and computed tomography findings in critically-ill saudi covid-19 patients
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Aljohara Mohmoud Hamza, Warda Demerdash Khalifa Ali, Nagwa Hassanein, Waddah Bader Albassam, Mohammad Barry, Abdullah Mofareh Mousa AlFaifi, Khalid Abdullah Sulaiman Altayyar, Nuha Abdulrahman M. Aboabat, Wafa Khaled Fahad Alshaiddi, Howayda Mohammad Hamed AbuSabbah, Ahmed Hameed Alamri, Sara Abdullah Hamad Albabtain, and Eman Alsayed
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Covid-19 ,Computed tomography ,Macrophage inflammatory protein-1 alpha ,MIP 1α ,Intracellular adhesion molecule 1 ,ICAM-1 ,Infectious and parasitic diseases ,RC109-216 ,Public aspects of medicine ,RA1-1270 - Abstract
Background: Several, clinical and biochemical factors were suggested as risk factors for more severe forms of Covid-19. Macrophage inflammatory protein-1 alpha (MIP-1α, CCL3) is a chemokine mainly involved in cell adhesion and migration. Intracellular adhesion molecule 1 (ICAM-1) is an inducible cell adhesion molecule involved in multiple immune processes. The present study aimed to assess the relationship between baseline serum MIP-1α and ICAM-1 level in critically-ill Covid-19 patients and the severity of computed tomography (CT) findings. Methods: The study included 100 consecutive critically-ill patients with Covid-19 infection. Diagnosis of infection was established on the basis of RT-PCR tests. Serum MIP-1α and ICAM-1 levels were assessed using commercially available ELISA kits. All patients were subjected to a high-resolution computed tomography assessment. Results: According to the computed tomography severity score, patients were classified into those with moderate/severe (n=49) and mild (n = 51) pulmonary involvement. Severe involvement was associated with significantly higher MIP-1α and ICAM-1 level. Correlation analysis identified significant positive correlations between MIP-1α and age, D-dimer, IL6, in contrast, there was an inverse correlation with INF-alpha. Additionally, ICAM-1 showed significant positive correlations with age, D‐Dimer,- TNF—α, IL6,while an inverse correlation with INF-alpha was observed. Conclusions: MIP-1α and ICAM-1 level are related to CT radiological severity in Covid-19 patients. Moreover, these markers are well-correlated with other inflammatory markers suggesting that they can be used as reliable prognostic markers in Covid-19 patients.
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- 2022
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13. Enhancement of information propagation on the highway in VANET based on Multiple Vehicle Class.
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Dhari Ali Mahmood, Ahmed Hameed Reja, and Ahmed Mamoon Mahmood
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- 2022
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14. Removal of 4-Chlorophenoles from Simulated Wastewater by Advanced Oxidation Processes
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Yasmen Abdul Mustafa and Ahmed Hameed Shihab
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4-chlorophenol ,advance oxidation process ,Fenton process ,photo-Fenton process ,UV photolysis. ,Engineering (General). Civil engineering (General) ,TA1-2040 - Abstract
The degradation and mineralization of 4-chlorophenol (4-CP) by advanced oxidation processes (AOPs) was investigated in this work, using both of UV/H2O2 and photo-Fenton UV/H2O2/Fe+3 systems.The reaction was influenced by the input concentration of H2O2, the amount of the iron catalyst, the type of iron salt, the pH and the concentration of 4-CP. A colored solution of benzoquinon can be observed through the first 5 minutes of irradiation time for UV/H2O2 system when low concentration (0.01mol/L) of H2O2 was used. The colored solution of benzoquinon could also be observed through the first 5 minutes for the UV/H2O2/Fe+3 system at high concentration (100ppm) of 4-CP. The results have shown that adding Fe+3 to the UV/H2O2 system enhanced the rate of 4-CP oxidation at a molar ratio of H2O2/Fe+3/4-CP equals to 13/0.4/1 by a factor of 7. This reduced the consumption of H2O2 by a factor of 6 and the irradiation time required for complete degradation was reduced by a factor of 6. The experimental results have shown that the optimum reagents for a complete degradation of 4-CP(50ppm) were H2O2.=0.005mol/L, Fe+3=0.16*10-3 mol/L under acidic condition (pH=3) and irradiation time of 15 min for the UV/H2O2/Fe+3 system with a molar ratio of H2O2/Fe+3/4-CP equals to 13/0.4/1.
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- 2023
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15. Relation between macrophage inflammatory protein-1 and intercellular adhesion molecule-1 and computed tomography findings in critically-ill saudi covid-19 patients
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Hamza, Aljohara Mohmoud, Ali, Warda Demerdash Khalifa, Hassanein, Nagwa, Albassam, Waddah Bader, Barry, Mohammad, AlFaifi, Abdullah Mofareh Mousa, Altayyar, Khalid Abdullah Sulaiman, Aboabat, Nuha Abdulrahman M., Alshaiddi, Wafa Khaled Fahad, AbuSabbah, Howayda Mohammad Hamed, Alamri, Ahmed Hameed, Albabtain, Sara Abdullah Hamad, and Alsayed, Eman
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- 2022
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16. RFID based Infrastructure to Vehicle Communication System for Road Sign Identification
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Ahmed Hameed Rasheed and Mohammed Al-Nouman
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UHF RFID, I2V, V2V,road sign, ITS, autonomous vehicle ,Science - Abstract
This paper produces an efficient, low-cost solution for communication between Infrastructure and vehicles by exploiting the passive UHF RFID features to deploy a scalable platform that overcomes the limitation of current technology GPS, WIFI and camera used in intelligent transportation system (ITS). The limitations are GPS inaccuracy, camera failure in bad weather, WIFI extra time handshake, and high deployment cost. The suggested system provides fast communication in real time that's required in warning message transmission between Infrastructure and vehicles, like speed limit warning and curve warning that the driver always misses or ignores. The proposed system contains a UHF RFID reader with a built-in antenna installed in the front pamper of the car connected to a microcontroller Arduino UNO by serial interface and a passive RFID tag deployed inside the road surface in the same line of the intended warning signal and this tag store the road information related to the warning signal. When the go over the RFID tag, it will retrieve its information, and a warning message will display on an LCD screen. This paper simulates all possible weather conditions and tries the system under four communication environments: water, dust, asphalt and free Air and compares the result accordingly.
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- 2023
17. CdO Nanoparticles by chemical method as antimicrobial therapy in order to maintain of healthy cells.
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Mezher, Thaer A., Ahmed, Hameed H., and Khaleel, Mohammed M.
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- 2024
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18. Automatic Aircraft Landing System: A Review.
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Ali, Afrah A., Abbas, Nizar H., and Kaleel, Ahmed Hameed
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FLIGHT control systems ,OPTIMIZATION algorithms ,LITERATURE reviews ,FUZZY logic ,MACHINE learning - Abstract
Copyright of Journal of Engineering (17264073) is the property of Republic of Iraq Ministry of Higher Education & Scientific Research (MOHESR) and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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- 2024
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19. Blending Ethnomedicine with Modern Technology—From Conventional to Tailored Products: Modulating Biopharmaceutical Properties of Berberis Extract by Solid Lipid Nanoparticles for Wound Healing
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Neetika Sharma, Karan Vasisht, Jasmine Kaur, Simarjot Kaur Sandhu, Kaustav Dey, Bakr Ahmed Hameed, Rakesh Bajaj, Indu Pal Kaur, and Maninder Karan
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herbal ,natural extract ,drug delivery ,solubility ,stability ,excision wound ,Biotechnology ,TP248.13-248.65 ,Medicine (General) ,R5-920 - Abstract
Drug-delivery systems employing phytopharmaceuticals based on the leads in traditional knowledge offers not only an alternative but quicker and more economic strategy for drug development. Nanophytopharmaceuticals promise remarkable opportunities with the ability to overcome challenges associated with herbal medicines, such as low solubility and bioavailability, poor target specificity, and shelf life. Berberis extracts documented as Ropana (wound healer) in Sushruta Samhita are a popular traditional remedy that is amiss in the modern system of medicine as it exhibits very poor biopharmaceutical properties. Poor solubility and bioavailability necessitate the administration of high doses to achieve the desired therapeutic effects. Exploiting the diversified type of compounds with pleiotropic properties present in Berberis, the biopharmaceutical properties were engineered using an optimized freeze-dried extract and developed solid lipid nanoparticles (SLNs) as an effective drug-delivery system. An industrially viable and environment-friendly hot high-pressure homogenization technique led to a stable formulation with an average particle size of 178.4 nm, as well as a 7-fold increase in loading and a significant entrapment of 91 ± 1.25%. The pharmacodynamic studies of developed nanosystems in excision-wound models showed faster and complete healing of wounds with no scars.
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- 2023
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20. Anticancer and microbicide action of carbon quantum dots derived from microcrystalline cellulose: Hydrothermal versus infrared assisted techniques
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Amal T. Mogharbel, Sraa Abu-Melha, Ahmed Hameed, Roba M. S. Attar, Abdulmajeed F. Alrefaei, Albandary Almahri, and Nashwa El-Metwaly
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MCC ,CQDs ,Hydrothermal conditions ,Infrared assisted technique ,Anticancer ,Microbicide laborer ,Chemistry ,QD1-999 - Abstract
Urgent requirement for medication from cancer diseases and different microbial infections is interestingly considered. Carbon quantum dots (CQDs) as environmentally friendly fluorescent carbon nano-functionalized materials are popularly considered for application in medical purposes. Herein, a comparative study is presented for the affinity of CQDs ingrained from microcrystalline cellulose (MCC) prepared under hydrothermal conditions (CQDs-HT) versus that prepared under infrared assisted technique (CQDs-IR) for acting as anticancer and antimicrobial laborers. The estimated size averages for the obtained CQDs-HT & CQDs-IR were 7.8 & 9.8 nm, respectively. CQDs-HT showed rationally higher anti-proliferative action against Hepatocellular Carcinoma (HepG2) compared to CQDs-IR. Treatment with 1000 μg/mL of CQDs-IR & CQDs-HT exhibited 78 & 90 % mortality percentage of cancer cells, respectively. The obtained CQDs showed excellent microbicide potentiality and the minimum inhibitory concentration (MIC) from the synthesized CQDs-TH and CQDs-IR was ranged in 100–350 µg/mL and 300–400 µg/mL against different pathogens including bacteria and fungi, respectively. As a conclusion, hydrothermal technique showed seniority over infrared assisted technique in nucleation of CQDs with higher anticancer and microbicidal activities.
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- 2023
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21. Design of tri-band hairpin line band pass filter for S-band communication application.
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Nayyef, Ibrahim Mohammed, Reja, Ahmed Hameed, and Jadooa, Ameer Abd
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TELECOMMUNICATION satellites , *PERMITTIVITY , *IEEE 802.16 (Standard) , *BUSINESS losses , *MICROSTRIP transmission lines - Abstract
The aim of this paper is to design tri-band 5th order folded hairpin line band pass filter for S-band communication application with square hole attached to the ground plane. The microstrip band pass filter has dielectric constant of 4.3 (epoxy FR-4), substrate height of 1.6 mm and pass band ripple of 0.1. The total size of the filter is 31.2*22*1.67 mm3. The purpose of the filter operates on tri-band application (2.05 GHz, 2.4 GHz, 2.738 GHz) for mobile satellite services (MSS), industrial scientific and medical (ISM), satellite communication and WiMAX application. The return loss of the operating frequencies is obtained approximately -20 dB for two bands and -27 dB for one band. The initial design of the hairpin line filter inspired by folded parallel coupled band pass filter in order to execute size reduction. The final design of the proposed filter run through series of steps including the design of the conventional type and then applied extra folded in the first and last coupled line, and finally extrude a square from the ground plane to achieve tri-band. [ABSTRACT FROM AUTHOR]
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- 2024
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22. Performance improvement of hybrid orthogonal optical signals for small enclosed environments.
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Alkhasraji, Jafaar Mohammed Daif, Reja, Ahmed Hameed, Mahmood, Ahmed Mamoon, and Al-Janabe, Manal Hadi
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OPTICAL communications , *MULTI-carrier modulation , *BIT rate , *OPTICAL modulation , *SIGNALS & signaling - Abstract
The demand for high transmission rates and dependable communication drive the optical Multi-carrier modulation technique to be an appealing method owing to its broad spectrum particularity. In this paper, hybrid optical OFDM is evaluated and discussed for LOS and NLOS channel models. The perfect signal shaping characterized by optimal biasing and scaling at the transmitter/receiver sides within the optical power limitations plays a significant role in system performance. Consequently, the minimum needed energy bit/noise bit (Eb/N0) to preserve a required bit-error rate is achieved for a selected multi-layer modulation system and a specified variety of optical power limitations. Simulation results demonstrated the minimisation of the BER could be obtained by reducing the ambient noise vai adopting an extra process stage at the receiver, notably, at the transmitter side. The outcomes were presented in terms of two channels. Upon utilising the identical bit rate of all scenarios, we have found that the equalisation could enhance the overall system performance with MMSE values outperforming the ZF equaliser by SNR of 5 dB at the specific bit-error-rate of 0001. [ABSTRACT FROM AUTHOR]
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- 2024
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23. Development of Mechanically Reliable and Transparent Photochromic Film Using Solution Blowing Spinning Technology for Anti-Counterfeiting Applications
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Hana M. Abumelha, Ahmed Hameed, Kholood M. Alkhamis, Jafar. Alkabli, Enas Aljuhani, Reem Shah, and Nashwa M. El-Metwaly
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Chemistry ,QD1-999 - Published
- 2021
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24. Emotional Response using Power Spectrum Approach
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Wafaa Khazaal Shams, Qusay Kanaan Kadhim, Noor Ahmed Hameed, and Wijdan Mahommd Khuthqair
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EEG ,Alpha wave ,Emotional states ,classification ,Science - Abstract
The objective of this study is to detect affective response of children to facial expression based on alpha power density of brain activity. Electroencephalography data were collected from 10 typical children. The alpha power temporal information of active brain regions was extracted. Performance of the power spectrum feature was evaluated in emotion recognition process using K nearest neighbor, a regularized least square and multilayer perceptron classifier. A statistical analysis indicated right alpha activity during negative and calm emotional states. Statistical results showed significant difference between rest conditions and emotional state. The best accuracy we got to detect emotional states is by using regularized least square that is 70%.
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- 2022
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25. Traducción Poética Es Un Arte (Im)Posible
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Ahmed Hameed Abdulmajeed and Abeer Hussein Abid, PHD
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traducción poética ,(im)posibilidad de traducir la poesía ,lingüística cognitiva ,análisis semántico ,Abdul Hadi Sadoun ,Language and Literature - Abstract
Este trabajo de investigación es parte extraída de un TFM([1]), en el que se destaca la (im)posibilidad de traducir la poesía, sus mecanismos y tipos, además de tomar un ejemplo poético traducido del árabe al español por Abdul Hadi Sadoun. La traducción poética es uno de los tipos de traducción más difíciles, a causa de los textos poéticos se pueden interpretar de más de una manera, ya que contiene muchas expresiones metafóricas. Cada poeta tiene su propio estilo de escritura y cada lector tiene una forma de entender el texto, que depende del nivel de su conciencia mental, y estos dos conceptos llevan a una diferencia en la comprensión del texto entre el poeta y el destinatario. Aquí radica la dificultad del trabajo del traductor a la hora de traducir el texto, por lo que debe conocer todas las circunstancias que rodean al texto poético, a fin de proporcionar al lector una traducción más inteligible y coherente con el texto original. ([1]) TFM es la abreviatura del Trabajo Fin de Máster.
- Published
- 2022
- Full Text
- View/download PDF
26. Effect of Seed Stimulation by Alpha-Amylase Enzyme, Stimulus Temperature Degree and Sowing Dates on some Growth Characteristics of Sorghum.
- Author
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Abbas, Jyan Zuhair and Saudi, Ahmed Hameed
- Published
- 2024
- Full Text
- View/download PDF
27. The Effect of Smit-Style Training on the CPK Enzyme, Kinetic Response Speed, and Accuracy of the Blocking Skill for Young Volleyball Players.
- Author
-
JERRİ, Zainab Ali, RADHİ, Mahmoud Nasser, and OLEİWİ, Ahmed Hameed
- Subjects
VOLLEYBALL ,EXERCISE physiology ,MUSCLE adaptation ,SPORTS sciences ,PHYSICAL education - Abstract
The purpose of this paper is to prepare volleyball-style (SMlT) exercises, as well as identify the effect of (SMlT)-style exercises on the CPK enzyme, speed of kinetic response, and accuracy of the blocking skill for young volleyball players. The researchers to use the experimental method because it is compatible with the nature of the research problem, and to design the method of the two equal groups (experimental and control) with pre- and post-tests. The research population was determined by the young players of Al-Daghara Sports Club for the sports season (2023-2024), who numbered (14) players, and the freestyle players, who numbered two players, were excluded because their characteristics did not match the nature of the study. Thus, the total number became (12) players, and the researcher chose them entirely for the experiment, and they were distributed. Two groups were divided equally in a random manner (lottery method), after which the experimental group underwent training (SMlT) method, while the control group remained using the trainer’s normal training curriculum. One of the most important results reached by the researcher is that: The exercises applied by the experimental research group using the SMlT method helped adapt the muscle cells by increasing the activity of the CPK enzyme . One of the most important recommendations recommended by the researchers is that: Researchers recommend adopting specialized exercises using the SMIT method as basic data when training volleyball players. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
28. Design and Standardization of a Device to Measure Attentional Control for Futsal Players
- Author
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Jebur, Waheb Razzaq, primary, Ali, Ahmed Hameed, additional, Atiyah, Ameen Salih, additional, and Obed, Mohammed Hasan Shaalan, additional
- Published
- 2024
- Full Text
- View/download PDF
29. Effect of reinforcement materials and immersion mediums on physical properties of epoxy composites
- Author
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Al-Salmani, Mohanad R., primary, Fayyadh, Ahmed Hameed, additional, and Alfalahi, Ahmad H. M., additional
- Published
- 2024
- Full Text
- View/download PDF
30. An Analytical Study of Theatre and censorship in Howard Barker’s No End of Blame: Scenes of Overcoming (1981) and Scenes from an Execution (1984)
- Author
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Midhin, Majeed Mohammed, primary and Obeid, Ahmed Hameed, additional
- Published
- 2023
- Full Text
- View/download PDF
31. Processing of Turbine Blades Using Cermet Composite Materials
- Author
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Ahmed, Hameed H., Ahmed, Adnan Raad, Darweesh, Salih Y., Khodair, Ziad T., and Al-Jubbori, Mushtaq Abed
- Published
- 2020
- Full Text
- View/download PDF
32. Green-synthesis and characterization for new Schiff-base complexes; spectroscopy, conductometry, Hirshfeld properties and biological assay enhanced by in-silico study
- Author
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Fatmah Alkhatib, Ahmed Hameed, Ali Sayqal, Abrar A. Bayazeed, Seraj Alzahrani, Zehba A. Al-Ahmed, ismail Althagafi, Rania Zaky, and Nashwa M. El-Metwaly
- Subjects
Hydrazone ,Ball-milling ,DFT ,Docking-simulation ,Anti-oxidant ,Cytotoxicity ,Chemistry ,QD1-999 - Abstract
A facile green synthesis ball milling technique was used to prepare series of oxo-N'-(1-(pyridin-2-yl) ethylidene)-3-(thiazol-2-ylamino)propanehydrazide (H2L) complexes with UO2(II), Co(II), Cu(II), Pd(II) and Zn(II) ions. The configuration of isolated compounds was established based on spectroscopic, analytical as well as conformational techniques. Material-studio package was applied to propose the most suitable atomic-distribution within the ligand and its complexes via DFT method. The octahedral geometry was proposed for all complexes through poly-dentate coordinating ligand. Series of conductometric-titrations for the ligand versus CuSO4 was carried out to estimate the formed molar-ratio and constants of association & formation. To strengthen in-vitro study, structural-property relationship (drug-likeness) was applied, the data suggested the high biological efficiency of tested compounds. On the other hand, a simulation approach through MOE software was also conducted for the ligand and its Zn(II) complex against four pathogen proteins. This to recognize the magnitude of similarity between data exported in-silico as well as in-vitro assay, which already done. The best inhibition was recorded with H2L-1p3j, H2L-1cca, Zn(II)complex-1cca complexes. Concerning the ligand and its complexes, the in-vitro study has been achieved for anti-oxidant, antimicrobial, as well as cytotoxic assay.
- Published
- 2020
- Full Text
- View/download PDF
33. Iron oxide nanopowder based electrochemical sensor for sensitive voltammetric quantification of midodrine
- Author
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Salhah D. Al-Qahtani, Ahmed Hameed, Enas Aljuhani, Reem Shah, Arwa Alharbi, Basim H. Asghar, and Nashwa M. El-Metwaly
- Subjects
Midodrine ,Iron oxide nanoparticles ,Carbon paste sensor ,Differential pulse voltammetry ,Chemistry ,QD1-999 - Abstract
The present work describes the fabrication and electrochemical characterization of a novel iron oxide nanopowder-based carbon paste electrodes (CPE) for the sensitive voltammetric quantification of midodrine (MD) in pharmaceutical formulations and biological fluids. At the electrode surface, the postulated reaction mechanism involved the irreversible oxidation of the terminal amino group of midodrine through the participation of two-electron as elucidated by the sweep rate studies and molecular orbital calculations. Calibration graphs were linear in the MD concentration range from 0.16 × 10-6 to 2.12 × 10-6 mol L-1 with LOD 0.04 × 10-6 mol L-1. Prolonged stability with an operational lifetime of more than 4 months and high measurement reproducibility were the promising futures of the fabricated sensors. The proposed electroanalytical approach was free from interference and suggested for assaying of midodrine in its pharmaceutical formulations and biological samples with recovery agreed with the official methods.
- Published
- 2021
- Full Text
- View/download PDF
34. Eco-friendly green synthesis of functionalized mesoporous silica nanospheres for the determination of Al(III) ions in multiple samples of different kinds of water
- Author
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Enas Aljuhani, Ahmed Hameed, Zehbah A. Al-Ahmed, Albandary Almahri, Turki M. Habeebullah, Ahmed Shahat, and Nashwa M. El-Metwaly
- Subjects
Aluminum ,Chemical sensor ,Spectrophotometric ,Determination ,Water ,Chemistry ,QD1-999 - Abstract
The current work proposed a new green procedure that is not sophisticated to recognize and determine the Al(III) ions in multiple water samples. The suggested method was conducted based upon the direct immobilization of aurintricarboxylic acid reagent into the mesoporous silica nanospheres to shape a unique and novel solid sensor. Al(III)-ATA red-complex has been formed at pH 4.0 and spectrophotometrically measured at 525 nm. Moreover, the complexation was reversible, and the ATA sensor retained his functionality even after six-time reuse/cycles using EDTA as eluent. Univariate and multivariate (partial least squares 1, PLS-1) calibration techniques were utilized for calculating the figures of merit for the determination of the Al(III) ions. The obtained calibration curve was linear from 2.0 to 70 ppb Al(III) ions concentration. The developed method has a detection limit of 3.5 ppb. In addition, the ATA sensor showed high adsorption capacity value (118.53 mg/g) which gives it a great advantage to be applicable as nanocollector for trapping Al(III) ions. The novel ATA sensor showed high degree of selectivity, sensitivity, reproducibility, and stability. The current study explores the effectiveness of the ATA sensor for the first time to produce a green solid sensor to determine the trace amount of Al(III) in diverse water types; tap, mineral, river, well, and sea water.
- Published
- 2021
- Full Text
- View/download PDF
35. Managing Strategies to Revitalize Urban Cultural Heritage after Wars: The Center of the Old City of Mosul as a Case Study
- Author
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Safaaaldeen Hussein Ali, Mohammed Fareed Sherzad, and Ahmed Hameed Alomairi
- Subjects
built heritage ,cultural heritage ,cultural legacy ,reviving ,Building construction ,TH1-9745 - Abstract
This research deals with the process of reviving urban heritage, especially in old cities after the war, due to their symbolic and moral values in society. By studying the reality of the city and its destructed heritage features, there was a local need to study the integrated strategies of the urban heritage revival process to reach indicators that are drawn from international experiences and the curricula and studies of international organizations (ICOMOS, World Bank, UN-Habitat, IOM) that interested in cultural heritage and to use these indicators in evaluating local projects in the center of the old city of Mosul which was chosen as a case study for this research, due to its historical and civilizational importance, which has contributed greatly to the formation of the city of Mosul through the ages, and as this city has witnessed deliberate sabotage of its urban heritage due to the terrorist acts witnessed before its liberation.
- Published
- 2022
- Full Text
- View/download PDF
36. Non suitability of silver ion conducting polymer electrolytes based on chitosan mediated by barium titanate (BaTiO3) for electrochemical device applications
- Author
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Aziz, Shujahadeen B., Abdullah, Ranjdar M., Kadir, M.F.Z., and Ahmed, Hameed M.
- Published
- 2019
- Full Text
- View/download PDF
37. The Prevalence of Parasites in the Domestic Pigeons (Columba livia domestica) in Zakho City, Kurdistan-Iraq
- Author
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Araz Ramadhan Issa, Wijdan M.S. Mero, Dalia Loqman Hasan, and Masood Ahmed Hameed
- Subjects
Pigeon, Ectoparasites, Cestodes, Prevalence. ,Science - Abstract
Pigeons have accompanied humans since ancient time because they are used as a source of food, pets, hobby, and religious symbols. Pigeons have shown high prevalence rate of infection with gastrointestinal helminths and protozoan. This study was conducted to evaluate the prevalence of parasitic infections in the domestic pigeon (Columba livia domestica) from October, 2017 to April, 2018, purchased from bird market of Zakho City, Kurdistan region. The samples were taken from 50 adult pigeons (28 males and 22 females). The birds were transferred to Parasitology Laboratory, Faculty of Science, Zakho University. In the laboratory, each bird was sacrificed and immediately the feather and skin of under wings, chest and the rest of the body was examined for ectoparasites. The collected ectoparasites were preserved in 70% alcohol for further study. The sacrificed birds were dissected and their intestine and contained were examined for the presence of parasites. The results revealed a total rate of 76% of infection with ectoparasites, which included three species of lice, namely: Columbicola columbae (56%), Companulotes compar (36%) and Hohorstiella lata (10%). Regarding helminths, cestodes were the only helminths found in this study with a rate of 16% (8/50). Three species of cestodes were recorded, they included: Raillietina cesticillus(14%), Raillietina echinobothrida(4%) and Choanotaenia infundibulum (2%). Further studies are required to evaluate the effect of the recovered parasites on this host and their transmission to other poultry flocks and human. Keywords: Pigeon, Ectoparasites, Cestodes, Prevalence.
- Published
- 2021
- Full Text
- View/download PDF
38. Analyzing of UV Index with the Time Variation for Baghdad
- Author
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Ahmed Alwan, Ahmed Hameed, and Nuha Hamad
- Subjects
UV index ,UV radiation ,Solar zenith angle ,Special industries and trades ,HD9000-9999 ,Industrial engineering. Management engineering ,T55.4-60.8 - Abstract
In order to better realize the effects of UV index (UVI) reaching the earth surface, measurements of effective UVI were carried out during the period of one year over Baghdad; (Lat.33.32- Long.44.45), which receives highly amounts of annual solar radiation. A daily data analysis of UVI is found to reach the highest value during summer reaching the value of 11, and a minimum in winter with the value of 1. A relation between UV index and the solar zenith angle was also, it is found that the UVI is highly dependent on the sun elevation where the atmospheric optical path becomes shorter as sun elevation heighten. It can be concluded that Baghdad city exposure to higher amounts of UVI during summer and several hedges must be taken to avoid health harm implications.
- Published
- 2021
- Full Text
- View/download PDF
39. Nanoparticles of Metal Oxide (Bi2O3/PSi/n-Si) for Photovoltaic Applications.
- Author
-
Ahmed, Hameed H., Ali, Abduallah M., and Abd, Ahmed N.
- Subjects
METAL nanoparticles ,TETRAGONAL crystal system ,METALLIC oxides ,BAND gaps ,SOLAR cells ,BLACK cumin ,SILICON alloys - Abstract
Bismuth oxide (Bi
2 O3 ) nanoparticles are synthesized and evaluated for their function as materials for solar cells. Bi2 O3 solution is inexpensively produced from the Nigella sativa seeds using a green synthetic method. The synthesized Bi2 O3 solution is deposited by droplet casting method, and the synthesized nanofilm is dried at 80°C. Subsequently, diagnostic tests such as UV–VIS, XRD, and FTIR are performed on the Bi2 O3 /glass thin films. By means of the SEM, EDS, AFM, and I–V characteristics in dark and under illumination, the optical and structural characteristics of Bi2 O3 - nanoparticle films are investigated to determine the optical energy gap and crystalline material. X-ray diffraction reveals the presence of a tetragonal crystal system in the phase. The estimated band-gap energy Eg is approximately Eg1 = 3.6 eV, and FTIR analysis shows the degree of infrared absorption as a function of wavelength to demonstrate the presence of functional groups in bismuth-oxide molecules from Bi–O bonds. SEM–EDS morphology studies examine the occurrence of nanocrystals of various shapes and sizes. Finally, as a bulk heterojunction device, the I–V performance of the solar cell (Ag/Bi2 O3 /PSi/Si/Ag) deserves attention, and a fill factor FF= 48 is found for a solar-cell efficiency of 2.8%, ideality factor β= 1.35, characterization resistance RCH = 175 Ω, and the parallel resistance = 25.14 Ω·s. This cheap nanoparticle material could be an ideal candidate for future energy applications. [ABSTRACT FROM AUTHOR]- Published
- 2024
- Full Text
- View/download PDF
40. Design a microwave transmitter using magnetron and two layers waveguides
- Author
-
Reja, Ahmed Hameed, primary, Hussein, Ahmed Abdulqader, additional, and Hussain, Sabahaldin Abdulqader, additional
- Published
- 2023
- Full Text
- View/download PDF
41. Effects of High Doses of X-Ray on Hematological Parameters and Morphology of Red Blood Cells in Human Blood
- Author
-
Ali Taqi, kharmen Faraj, Sarah Zaynal, Jalil Said, and Ahmed Hameed
- Subjects
blood Cells ,CT Scan ,Exposure ,X-Ray ,Medical physics. Medical radiology. Nuclear medicine ,R895-920 - Abstract
Introduction: The aim of the current study was to investigate the effects of X-ray radiation on some hematological parameters, morphology of red blood cells (RBC) and erythrocyte sedimentation rate (ESR) analysis of human blood using computed tomography (CT) scanner. Material and Methods: For the purpose of the study, 5 ml of wholeblood was drawn from vein puncture of 28 healthy people and divided into two equal parts in ethylendiamintetracetic acid (EDTA) tubes. The first 28 tubes were assigned as the controls. The second 28 tubes were divided into 4 groups of 7 cases, irradiated to (3, 6, 9, and 12) Gy, X-ray from a computed tomography CT-scan machine. Results: The results showed that no significant difference was observed for the hematological parameters and ESR analysis. However, there was a significant decrease in the radius of RBCs.In this regard, the mean RBC counts were obtained as 6.267 ± 0.528, 6.867 ± 0.476, 7.167 ± 0.535, and 6.55 ± 0.295 μm after exposure to the radiation doses of 3, 6, 9, and 12 Gy, respectively. The crenation of the cells was also observed, and the percentage of crenation were
- Published
- 2019
- Full Text
- View/download PDF
42. Novel Copper Oxide Nanostructure Propafenone Voltammetric Sensor
- Author
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Ameena M. Al-bonayan, Ahmed Hameed, Ali Q. Alorabi, Hussain Alessa, Enas Aljuhani, and Nashwa M. El-Metwaly
- Subjects
Multidisciplinary - Published
- 2023
43. COVID-19 and a Call to Adapt Dental Education
- Author
-
Murad Alrashdi, Ahmed Hameed, and Abdullah Aljabr
- Subjects
dental education ,dental innovation ,COVID-19 ,education technology ,educational innovation ,Dentistry ,RK1-715 - Abstract
Introduction: COVID-19 has harmed the economic, academic, and clinical pursuits of dental educational institutions and dental students. As dental associations, health agencies, and regulatory bodies around the globe announced the need for social distancing and stricter safety measures, some dental schools worldwide have been adapting to accommodate for such changes.Methods: This review attempts to provide a general picture of the early responses of some dental schools worldwide to the COVID-19 crisis and identify some of the regulations that influenced dental schools' initial decisions. An analytical approach was used to assess changes to dental school curriculums in didactic (academic/non-clinical) and clinical education, examinations, administration, and dental school research. The assessment was based on a web-based search of a variety of online global references including research articles, reviews, letters, press releases, and surveys regarding the early effect of covid-19 on dental education at some dental institutions in the U.S, Europe, and Asia from late February to early July of 2020. The review also offered further recommendations to dental school administrators regarding the future of dental education during the early stages of a pandemic.Conclusions: Innovations in technology and blended educational methodologies will continue to influence how certain dental schools around the world adapt to the changes caused by COVID-19 and better prepare dental education institutions for potential future public health disruptions.Clinical significance: Dental schools will need to adapt their education system to improve didactic, preclinical, clinical, administrative, and research components of dental education in response to the changes caused by COVID-19 and future pandemics.
- Published
- 2021
- Full Text
- View/download PDF
44. Design and analysis of tri-band antenna for aerospace application.
- Author
-
Mahdi, Malik Naeem, Mohammed, Farag Mahel, and Reja, Ahmed Hameed
- Subjects
ANTENNAS (Electronics) ,MICROSTRIP antennas ,TELECOMMUNICATION satellites ,ANTENNA design ,PERMITTIVITY ,MICROSTRIP transmission lines ,MOBILE apps - Abstract
A tri-band microstrip patch antenna for aerospace communication application is presented in this paper. The antenna design is based on conventional rectangular shape with two different radiuses via hole and two rectangular slots. The patch rectangular slot dimensions are 20*4.5 mm
2 and the ground slot dimensions are 22*5.5 mm2 . The proposed antenna is designed to operate at L-band and S-band aerospace communication applications including mobile satellite services and satellite communication. The antenna operates at 1.805 GHz, 2.325 GHz and 3.42 GHz with -31.6 dB, -21.5 dB and -35 dB return losses respectively. The measured bandwidths of the proposed antenna are 34 MHz, 20 MHz and 100 MHz respectively. The antenna gains in 1.2 dB, 1.4 dB and 1.5 dB. The total dimension of the antenna is 44*41 mm2 uses epoxy FR-4 substrate material with 1.6 mm height and 4.3 dielectric constants. The width and length of the patch are 24 mm and 21 mm respectively. The design strategies of the antenna initiated with a conventional microstrip rectangular shape and then analysis the rectangular slot etched to the patch by varying the length and width of the slot. Different dimensions of the rectangular slot that etched to the ground with geometrical analysis is achieved. The next step by applied single via hole and examine the effect of varying the radius on the results. Final step is applied two metallic via holes with different radius (1mm and 0.4 mm) to estimate the antenna performance results. [ABSTRACT FROM AUTHOR]- Published
- 2023
- Full Text
- View/download PDF
45. Electrical and Dielectric Properties of Copper Ion Conducting Solid Polymer Electrolytes Based on Chitosan: CBH Model for Ion Transport Mechanism
- Author
-
Aziz, Shujahadeen B., Abdullah, Omed Gh., Saeed, Salah R., and Ahmed, Hameed M.
- Published
- 2018
- Full Text
- View/download PDF
46. A conceptual review on polymer electrolytes and ion transport models
- Author
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Aziz, Shujahadeen B., Woo, Thompson J., Kadir, M.F.Z., and Ahmed, Hameed M.
- Published
- 2018
- Full Text
- View/download PDF
47. Highly Selective Optical Sensor Eu (TTA)3 Phen Embedded in Poly Methylmethacrylate for Assessment of Total Prostate Specific Antigen Tumor Marker in Male Serum Suffering Prostate Diseases
- Author
-
Mohannad Garoub, A. H. Hefny, W. E. Omer, Mostafa M. Elsaady, Mohamed M. Abo-Aly, Ali A. Sayqal, Ahmed Alharbi, Ahmed Hameed, Hussain Alessa, A. O. Youssef, Ekram H. Mohamed, Ayman A. Gouda, R. El Sheikh, M. N. Abou-Omar, Maged A. El-Kemary, and M. S. Attia
- Subjects
specific antigen ,quenching ,luminescence ,optical sensor ,prostate cancer ,Chemistry ,QD1-999 - Abstract
A low-cost, simple, and highly selective method was used for the assessment of total prostate specific antigen (tPSA) in the serum of prostate cancer patients. This method is based on quenching the intensity of luminescence displayed by the optical sensor Eu (TTA)3 phen/poly methylmethacrylate (PMMA) thin membrane or film upon adding different concentrations of tPSA. The luminescent optical sensor was synthesized and characterized through absorption, emission, scanning electron microscopy (SEM), and x-ray diffraction (XRD), and is tailored to present red luminescence at 614 nm upon excitation at 395 nm in water. The fabricated sensor fluorescence intensity is quenched in the presence of tPSA in aqueous media. The fluorescence resonance energy transfer (FRET) is the main mechanism by which the sensor performs. The sensor was successfully utilized to estimate tPSA in the serum of patients suffering prostate cancer in a time and cost effective way. The statistical results of the method were satisfactory with 0.0469 ng mL−1 as a detection limit and 0.99 as a correlation coefficient.
- Published
- 2020
- Full Text
- View/download PDF
48. Design a microwave transmitter using magnetron and two layers waveguides
- Author
-
Ahmed Hameed Reja, Ahmed Abdulqader Hussein, and Sabahaldin Abdulqader Hussain
- Subjects
Adapter ,Launcher ,Transmitter ,Waveguide ,Magnetron - Abstract
A magnetron is a power oscillator device used in several radar transmitters for generating the electromagnetic wave (EMW) with a constructive and fixed frequency. In this work, a radar transmitter has been carried out using magnetron operates at 2,458 MHz and two conducting layers waveguides to achieve minimum loss of the signal due to the increased temperature. The magnetron is connected with the high voltage capacitor (1.0 μF) in order to store the alternating current (AC) signal delivered from the high voltage transformer. A waveguide parts have been used as transmission lines in view of connecting the magnetron to the antenna. These parts include two metal layers, the upper layer (outer) is advanced audio coding (AAC) 1350 aluminum conductor and the lower (inner) is copper. The waveguide dimension should be suitable to flow frequency from 2.2 GHz to 3.3 GHz. To measure the operating frequency, a waveguide adapter and a coaxial cable which combined with n-female connector have been connected to magnetron. The wave is delivering to the frequency counter by Bayonet Neill–Concelman (BNC) to n-female connectors. The promising results of the proposed work have been achieved with a maximum power, efficient return loss, acceptable voltage standing wave ratio (VSWR) and low-cost manufacturing.
- Published
- 2023
49. ADD GINGER Zingiber officinale , GARLIC POWDER Allium sativum L. AND BLACK BEAN SEEDS Nigella sativa L. TO FEED AND ITS IMPACT ON PRODUCTIVITY AND SOME PHYSIOLOGICAL TRAITS OF JAPANESE QUAIL.
- Author
-
Faiyz AL-Khateeb, Shehab Ahmed Hameed, Samir Hamid Majid, and Salem Thanon Younis
- Subjects
Agriculture - Abstract
This study was conducted to know the effect of adding plants, ginger and black bean and garlic to feed on some production traits and egg production of Japanese quail during 49 days of age. Chicks were divided into four treatments of the first control -free plant additions and second treatment is add ginger and third treatment is add black bean and garlic add a fourth. After a statistical analysis of the results, show the superiority of all transactions of plant additions morally in body weight and the weight gain and cumulative food conversion efficiency compared to control. It also shows a significant decrease in the percentage mortality of both 2 and 3 as compared with the 1 and 4. As it turns out the existence of a significant decrease of the coefficients 2.3 and 4 in feed consumption at the end of the seventh week compared to control. While in 4 treatment it was noticed that there was increase outweigh the relative growth rate and chest piece compared to the rest of the transactions. It was noted the presence of significant superiority in the dressing percentage of 3 and 4 compared to control. As shown the presence of significant superiority in the proportion of egg production(H.D.P) EP% transaction control and 2 compared with 3 and 4 and the significant superiority of treatment 2 in the average number of eggs / female EN% and the conversion factor total eggs g feed / g eggs compared to the rest of the transaction. The significant superiority in the efficiency of feed conversion of eggs FC% of 1 and 2 compared with 3 and 4. We conclude from this study that the addition of medicinal plants have a positive effect on body weight and to reduce the proportion of mortality Japanese quail and this in turn enhances the economic situation at the level of education on major projects.
- Published
- 2018
- Full Text
- View/download PDF
50. Removal of 4-Chlorophenoles from Simulated Wastewater by Advanced Oxidation Processes
- Author
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Mustafa, Yasmen Abdul, primary and Shihab, Ahmed Hameed, additional
- Published
- 2023
- Full Text
- View/download PDF
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