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Case Report on Hiccup and Lateral Medullary Syndrome

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Neuroscience & Medicine 2015年第2期6卷 58-61页

作者： Mohamed Hamdy Ibrahim Alyaa Fadhil sameh saied ali Salma Fathy Abdel Kader Mohamed Khalid Kiran Kumar Shivram Kumar Janhavi Sirsat Department of Neurology GMCH & RC Ajman United Arab Emirates Department of Clinical Pharmacology GMCH & RC Ajman United Arab Emirates Department of Radiology GMCH & RC Ajman United Arab Emirates Department of Internal medicine GMCH & RC Ajman United Arab Emirates Gulf Medical University (GMU) Ajman United Arab Emirates

The case study is aimed at providing a more thorough analysis of a case of lateral medullary syn-drome presented only with persistent hiccup after eating lunch the study hopes to generate an interest for further studies into the topic and focuses on abnormal unusual presentations of lateral medullary syndrome. Ethical committee has approved this case after taking consent from the patient and explaining to him the importance of the case in clinical practice.

关键词： Hiccup Lateral Medullary Syndrome Stroke

Impact of composition ratio on the structure and optical properties of(1-x)MnFe_(2)O_4/(x)ZnMn_(2)O_4 nanocomposite

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Chinese Physics B 2022年第7期31卷 481-489页

作者： Zein K.Heiba Mohamed Bakr Mohamed ali A.Alkathiri sameh I.Ahmed A A Alhazime Department of Physics Faculty of ScienceAin shams UniversityCairo 11566Egypt Physics Department Faculty of ScienceTaibah UniversityAl-Madina al MunawarahSaudi Arabia Depatment of Physics College of ScienceTaif UniversityP.O.Box 11099Taif 21944Saudi Arabia

(1-x)MnFe_(2)O_(4)(MFO)/xZnMn_(2)O_(4)(ZMO)(x=0,0.2,0.5,0.8,and 1.0)nanocomposite samples were prepared using co-precipitation *** phase percentage,cell parameters,and crystallite size of MFO and ZMO phases in each nanocomposite sample were calculated using Rietveld refinement *** x-ray diffraction(XRD)analysis and Fourier-transform infrared spectroscopy techniques established the variation in the lattice parameters of each phase are due to permutation of all cations among the octahedral and tetrahedral sites of MFO and *** different oxidation states of different ions in all samples were determined using x-ray photoelectron spectroscopy(XPS)*** variation in absorbance of the nanocomposite samples with composition parameter(x)is dependent on the wavelength *** optical bandgap of the nanocomposite samples is decreased as the content of ZMO phase *** effect of alloying on the refractive index,extinction coefficient,dielectric constant,optical conductivity,and the nonlinear optical behaviors of all samples were studied in *** nanocomposite sample x=0.5 disclosed upgraded optical parameters with the highest refractive index,optical conductivity,and PL intensity,which nominate it to be functional in various application fields.

关键词： MFO and ZMO composite XPS structure optical

A critical review of microplastics in aquatic ecosystems: Degradation mechanisms and removing strategies

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Environmental Science and Ecotechnology 2024年第5期21卷 62-76页

作者： sameh S.ali Tamer Elsamahy Rania Al-Tohamy Jianzhong Sun Biofuels Institute School of the Environment and Safety EngineeringJiangsu UniversityZhenjiang212013China Botany Department Faculty of ScienceTanta UniversityTanta31527Egypt

Plastic waste discarded into aquatic environments gradually degrades into smaller fragments,known as microplastics(MPs),which range in size from 0.05 to 5 *** ubiquity of MPs poses a significant threat to aquatic ecosystems and,by extension,human health,as these particles are ingested by various marine organisms including zooplankton,crustaceans,and fish,eventually entering the human food *** contamination threatens the entire ecological balance,encompassing food safety and the health of aquatic ***,developing effective MP removal technologies has emerged as a critical area of ***,we summarize the mechanisms and recently reported strategies for removing MPs from aquatic *** combining physical and chemical pretreatments with microbial degradation have shown promise in decomposing *** such as bacteria,fungi,algae,and specific enzymes are being leveraged in MP remediation *** advancements have focused on innovative methods such as membrane bioreactors,synthetic biology,organosilane-based techniques,biofilm-mediated remediation,and nanomaterial-enabled strategies,with nano-enabled technologies demonstrating substantial potential to enhance MP removal *** review aims to stimulate further innovation in effective MP removal methods,promoting environmental and social well-being.

关键词： Persistent organic pollutants Bioremediation Nanomaterial-enabled strategies Aquatic environment Ecotoxicity of microplastics

Effect of the Si/Al ratio of HZSM-5 zeolite on the production of dimethyl ether before and after ultrasonication

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燃料化学学报 2017年第5期45卷 581-588页

作者： sameh M.K.Aboul-Fotouh Laila I.ali Mona A.Naghmash Noha A.K.Aboul-Gheit Chemistry Department Faculty of ScienceNorthern Boder UniversityArar 91431Kingdom of Saudi Arabia Chemistry Department Faculty of EducationAin Shams UniversityRoxyCairo 11757Egypt Egyptian Petroleum Research Institute Nasr CityCairo 11787Egypt

A series of as-synthesized HZSM-5 zeolites with different Si/Al ratios(25,90,120,240 and 400)were post-treated by ultrasonication for an optimum time of 60 *** morphology,acidity and textural properties of HZSM-5 were characterized with XRD,SEM,N_2 adsorption and NH3-TPD *** catalytic performance was evaluated by dehydration of methanol to dimethyl ether(DME),which is a promising gaseous automotive fuel in *** was found that the Si/Al ratio of HZSM-5 had considerable impacts on its catalytic performance for dehydration of methanol to *** activity increased with decreasing Si/Al ratio from 400 to *** of HZSM-5 could significantly improve its catalytic performance.

关键词： Ultrasonication-HZSM-5-dimethyl ether-Si/Al 比率

Study on Strengthening of RC Slabs with Different Innovative Techniques

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Open Journal of Civil Engineering 2016年第4期6卷 516-525页

作者： Tarek ali sameh Yehia Faculty of Engineering at Mataria Helwan University Cairo Egypt Higher Institute of Engineering El-Shorouk Academy Cairo Egypt

This paper presents a focused study on using different methods to enhance the ultimate capacity of flexural behavior in RC slabs. Four RC specimens were casted with common compressive strength and reinforced with steel mesh. Specimens were strengthened with different methods such as usage of GFRP sheets, carbon fibers laminate strips and near surface mounted steel rebars. All specimens were subjected to two-point loading setup. Load was increased from zero to failure load. First crack was recorded and crack pattern was observed. The behavior of strengthened specimens was compared to that of the control specimen to judge the efficiency of the used techniques. Test results showed that the used techniques were effective in enhancing the behavior of the strengthened slabs by noteworthy values.

关键词： Slab Strengthening GFRP Sheets Carbon Fiber Laminate Strips Near Surface Mounted Rebars

Does the scleral encircling band provide a protective effect against the progression of diabetic retinopathy?

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International Journal of Ophthalmology(English edition) 2019年第9期12卷 1408-1414页

作者： Hossam Youssef Abouelkheir Amani E Badawi Amr M.Abdelkader Amr El-Kanishy sameh Saleh Waleed ali Abou Samra Manal ali Kasem Tharwat Mokbel Mansoura Ophthalmic Center Faculty of Medicine Mansoura University

AIM: To evaluate the effect of scleral encircling bands on the development and progression of diabetic retinopathy(DR) in diabetic ***: The medical records of diabetic patients who underwent unilateral retinal detachment(RD) surgery using scleral buckle and encircling band were reviewed retrospectively. Both eyes of patients were included in the study: one eye in each patient had a scleral buckle with encircling band(the operated eye) and the other one is the non-operated eye. The demographic characters, duration of diabetes and period between surgery and the last recall visit were retrieved from each patient. All the cases underwent fundus photo and fluorescein angiography(when indicated) to confirm the DR ***: Totally 25 patients fulfilled the inclusion and the exclusion criteria were become eligible for the study. A total of 50 eyes of 25 patients were enrolled in this analysis. The mean period of time passed from surgery with encircling band and the last reassessment visit was 12.5±2 y. Even though DR could develop in the operated eyes, it was at a less degree of severity compared to the non-operated eyes of same patients(P=0.027).CONCLUSION: Scleral encircling bands have protective effects against the development and progression of DR.

关键词： diabetic retinopathy scleral encircling bands retinal detachment

Bioplastic production in terms of life cycle assessment:A state-of-theart review

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Environmental Science and Ecotechnology 2023年第3期15卷 14-34页

作者： sameh Samir ali Esraa A.Abdelkarim Tamer Elsamahy Rania Al-Tohamy Fanghua Li Michael Kornaros Antonio Zuorro Daochen Zhu Jianzhong Sun Biofuels Institute School of the Environment and Safety EngineeringJiangsu UniversityZhenjiang212013PR China Botany Department Faculty of ScienceTanta UniversityTanta31527Egypt State Key Laboratory of Urban Water Resource and Environment School of EnvironmentHarbin Institute of TechnologyHarbinHeilongjiang Province150090China Laboratory of Biochemical Engineering&Environmental Technology(LBEET) Department of Chemical EngineeringUniversity of Patras26504PatrasGreece Department of Chemical Engineering Materials and EnvironmentSapienza University00184RomeItaly

The current transition to sustainability and the circular economy can be viewed as a socio-technical response to environmental impacts and the need to enhance the overall performance of the linear production and consumption *** concept of biowaste refineries as a feasible alternative to petroleum refineries has gained *** has become an important raw material source for developing bioproducts and ***,effective environmental biowaste management systems for the production of bioproducts and biofuels are crucial and can be employed as pillars of a circular ***,typically plastics manufactured from bio-based polymers,stand to contribute to more sustainable commercial plastic life cycles as part of a circular economy in which virgin polymers are made from renewable or recycled raw *** frameworks and strategies are utilized to model and illustrate additional patterns in fossil fuel and bioplastic feedstock prices for various governments'long-term *** review paper highlights the harmful impacts of fossil-based plastic on the environment and human health,as well as the mass need for eco-friendly alternatives such as biodegradable *** new types of bioplastics derived from renewable resources(e.g.,biowastes,agricultural wastes,or microalgae)and choosing the appropriate end-of-life option(e.g.,anaerobic digestion)may be the right direction to ensure the sustainability of bioplastic *** regulation and financial incentives are still required to scale from niche polymers to large-scale bioplastic market applications with a truly sustainable impact.

关键词： Biowaste Bioeconomy Bioplastic Life cycle assessment Biofuel

Innovative Artificial Neural Networks-Based Decision Support System for Heart Diseases Diagnosis

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Journal of Intelligent Learning Systems and Applications 2013年第3期5卷 176-183页

作者： sameh Ghwanmeh Adel Mohammad ali Al-Ibrahim Computer Science Department Faculty of Information Technology WISE University Amman Jordan.

Heart diagnosis is not always possible at every medical center, especially in the rural areas where less support and care, due to lack of advanced heart diagnosis equipment. Also, physician intuition and experience are not always sufficient to achieve high quality medical procedures results. Therefore, medical errors and undesirable results are reasons for a need for unconventional computer-based diagnosis systems, which in turns reduce medical fatal errors, increasing the patient safety and save lives. The proposed solution, which is based on an Artificial Neural Networks (ANNs), provides a decision support system to identify three main heart diseases: mitral stenosis, aortic stenosis and ventricular septal defect. Furthermore, the system deals with an encouraging opportunity to develop an operational screening and testing device for heart disease diagnosis and can deliver great assistance for clinicians to make advanced heart diagnosis. Using real medical data, series of experiments have been conducted to examine the performance and accuracy of the proposed solution. Compared results revealed that the system performance and accuracy are acceptable, with a heart diseases classification accuracy of 92%.

关键词： Heart Disease Diagnosis Classification Accuracy ANNs Decision Support System Knowledge Base

爱资哈尔大学的中国留学生群体研究:以1931至1938年间为主

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华东师范大学学报（自然科学版） 2020年第S1期 27-31页

作者： ELMASHALY sameh Ahmed ali 沐涛华东师范大学历史系上海200241 埃及爱资哈尔大学伊斯兰研究系埃及开罗

0引言近代以来,随着丝绸之路的开通,中、埃文化交流有了更多的形式,具体表现在有大量的中国学生以学术团体的方式前往埃及留学.埃及作为世界上最重要的文明古国之一,又是历史悠久的伊斯兰文化国家,是许多中国留学生心仪的目的国,而位于... 详细信息

0引言近代以来,随着丝绸之路的开通,中、埃文化交流有了更多的形式,具体表现在有大量的中国学生以学术团体的方式前往埃及留学.埃及作为世界上最重要的文明古国之一,又是历史悠久的伊斯兰文化国家,是许多中国留学生心仪的目的国,而位于开罗的爱资哈尔大学更是最佳选择.中国的回族青年自20世纪30年代起前往爱资哈尔大学留学.这些远赴埃及留学的青年学子,构成了中国近现代史上爱国青年海外留学史的重要组成部分,他们中的一些优秀代表人物,如马坚、纳忠、海维谅等,在积极推动中国与阿拉伯世界之间思想与学术方面的交流中作出了突出的贡献.

关键词：爱资哈尔大学中国留学生学术贡献文化交流