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World Journal of Cardiovascular Diseases 2017年第5期7卷 174-184页

作者： Samih Lawand Sarah Albabtain Khalil Houissa Anas Kodeih Musaab Aljuaid abdelfattah alsfar Ahmad Bahnassy Stéphane Carlier Adult Cardiology Department Prince Salman Heart Center King Fahad Medical City Riyadh Saudi Arabia Department of Cardiology Faculty of Medicine and Pharmacy UMONS Mons Belgium

Cardiovascular disease is the leading cause of mortality in patients with diabetes mellitus (DM). We sought to establish for the first time in Saudi Arabia an intravascular ultrasound (IVUS) profile of DM patients with acute coronary syndrome (ACS). Patients and methods: We retrospectively analyzed 210 IVUS studies in 181 patients hospitalized in King Salman Heart Centre for ACS. IVUS was performed to guide percutaneous coronary interventions (PCI) of borderline moderate lesions. Results: Mean age was 58 ± 10 years, 78% (n = 163) of IVUS studies were performed in men. There were 71% (n = 128) patients with DM. ST elevation myocardial infarction (STEMI) was the most common clinical presentation (47%, n = 88 patients). As compared to non-DM, the intermediate lesions of DM patients had a significantly larger IVUS plaque volume (267 ± 174 mm3 versus 193 ± 111 mm3, p Conclusion: IVUS demonstrates longer lesions to be treated in DM patients with ACS in Saudi Arabia, however no difference in average plaque burden or remodelling index. These findings are likely to impact our understanding of optimal PCI strategies in DM patients.

关键词： Intravascular Ultrasound Diabetes Mellitus Acute Coronary Syndrome

The future of competitive advantage in Oman: Integrating green product innovation, Al, and intellectual capital in business strategies

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International Journal of Innovation Studies 2024年第2期8卷 154-171页

作者： Fadi abdelfattah Mohammed Salah Khalid Dahleez Riyad Darwazeh Hussam Al Halbusi Modern College of Business and Science(MCBS) MuscatOman Dean College of Business Administration A'Sharqiyah UniversityIbraOman Head of Accounting Department Business SchoolAl-Ahliya Amman UniversityAmmanJordan Management Department Ahmed Bin Mohammed Military College(ABMMC)DohaQatar

This study delves into the dynamics of green product innovation,artificial intelligence(Al)adaption,and intellectual capital,investigating their impact on the competitiveness of firms in *** emphasizes the crucial role of government intervention and R&D investments in this *** on the responses of 214 top managers in Oman,the research employs structural equation modeling to analyze the intricate relationships between these *** findings underscore a significant positive correlation between green innovation,Al implementation,and intellectual capital,with government involvement and R&D investments as vital *** study provides a novel perspective on the synergy of technology,innovation,and intellectual capital in developing *** offers essential insights for business leaders,policymakers,and scholars,highlighting the necessity of integrating advanced technologies and sustainable practices in business strategies to achieve competitive *** research adds to the existing body of knowledge on innovation and *** offers practical implications for enhancing firm performance in Oman and similar emerging markets.

关键词： Green product innovation R&D investments AI adoption Intellectual capital Government involvement Knowledge-driven culture Oman

Surface engineering of ZnO electrocatalyst by N doping towards electrochemical CO_(2) reduction

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Journal of Energy Chemistry 2024年第1期88卷 71-81,I0002页

作者： Rohini Subhash Kanase Getasew Mulualem Zewdie Maheswari Arunachalam Jyoti Badiger Suzan abdelfattah Sayed Kwang-Soon Ahn Jun-Seok Ha Uk Sim Hyeyoung Shin Soon Hyung Kang Department of Interdisciplinary Program for Photonic Engineering Chonnam National UniversityGwangju 61186Republic of Korea Graduate School of Energy Science and Technology(GEST) Chungnam National University99 Daehak-roYuseong-guDaejeon 34134Republic of Korea Department of Chemistry Education and Optoelectronic Convergence Research Center Chonnam National UniversityGwangju 61186Republic of Korea Department of Advanced Chemicals and Engineering Chonnam National UniversityGwangju 61186Republic of Korea School of Chemical Engineering Yeungnam UniversityGyeongsan 38541Republic of Korea Department of Energy Engineering Korea Institute of Energy Technology(KENTECH)Naju 58217Republic of Korea

The discovery of efficient,selective,and stable electrocatalysts can be a key point to produce the largescale chemical fuels via electrochemical CO_(2) reduction(ECR).In this study,an earth-abundant and nontoxic ZnO-based electrocatalyst was developed for use in gas-diffusion electrodes(GDE),and the effect of nitrogen(N)doping on the ECR activity of ZnO electrocatalysts was ***,a ZnO nanosheet was prepared via the hydrothermal method,and nitridation was performed at different times to control the N-doping *** an increase in the N-doping content,the morphological properties of the nanosheet changed significantly,namely,the 2D nanosheets transformed into irregularly shaped ***,the ECR performance of Zn O electrocatalysts with different N-doping content was assessed in 1.0 M KHCO_(3) electrolyte using a gas-diffusion electrode-based ECR *** the ECR activity increased after a small amount of N doping,it decreased for higher N doping *** them,the N:ZnO-1 h electrocatalysts showed the best CO selectivity,with a faradaic efficiency(FE_(CO))of 92.7%at-0.73 V *** hydrogen electrode(RHE),which was greater than that of an undoped Zn O electrocatalyst(FE_(CO)of 63.4%at-0.78 V_(RHE)).Also,the N:ZnO-1 h electrocatalyst exhibited outstanding durability for 16 h,with a partial current density of-92.1 mA cm^(-2).This improvement of N:ZnO-1 h electrocatalyst can be explained by density functional theory calculations,demonstrating that this improvement of N:ZnO-1 h electrocatalyst comes from(ⅰ)the optimized active sites lowering the free energy barrier for the rate-determining step(RDS),and(ⅱ)the modification of electronic structure enhancing the electron transfer rate by N doping.

关键词： ZnO N-doped ZnO Gas-diffusion electrode CO Selectivity Electrochemical CO_(2)reduction

New prospective gas plays in pliocene sands, offshore Nile Delta Basin: A case study from Kamose-1 well at North Sinai Concession, Egypt

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Petroleum Research 2022年第3期7卷 329-340页

作者： Mohammad abdelfattah Sarhan Geology Department Facultyof ScienceDamietta UniversityNew Damietta City34517Egypt Center of Space Research and Applications(CSRA) Damietta UniversityNew Damietta CityEgypt

The Pliocene sands in the offshore parts of the Nile Delta Basin represent significant gas *** targets have been recently discovered in different places along the offshore Nile Delta *** present work focuses on the possibility of discovering new natural gas resources at North Sinai Concession through an integrated method between seismic and well logs data interpretations.A case study from Kamose-1 Well at Kamose Field,North Sinai Concession has been *** quantitative explanation for the well log data of Kamose-1 Well has revealed two zones expected to be gas-bearing *** intervals are located between depths;1174–1186 m(zone I)and between 1429 and 1503 m(zone II).The calculated petrophysical parameters for these zones exhibit low water saturation(24–43%),high effective porosity(30–31%),low shale volume(21–26%),high total porosity(37–38%)and low bulk volume of water(0.07–0.12).Zone II(74 m thick)shows a clear bright spot on the seismic profiles covering the study area,while,zone I is beyond seismic resolution(12 m thick).Several seismic bright spots have been outlined on the seismic data nearby Kamose-1 *** comparison between the newly outlined seismic bright spots with the drilled one in Kamose-1 Well exhibited a great ***,these prospects are expected to be new targets for gas exploration in the Pliocene succession at North Sinai Concession.

关键词： Petrophysical evaluation Pliocene sands Seismic bright spot Kamose field Nile delta basin

Geophysical appraisal of the Abu Madi gas reservoir,Nile Delta Basin,Egypt:Implications for the tectonic effect on the lateral distribution of petrophysical parameters

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Petroleum Research 2022年第4期7卷 511-520页

作者： Mohammad abdelfattah Sarhan Geology Department Faculty of ScienceDamietta UniversityNew Damietta City34517Egypt

The tectonic deformation has a significant influence on the hydrocarbon reservoirs *** effect of this process focuses on the lateral distribution of the petrophysical parameters characterizing the hydrocarbon *** main objective of the current study is to perform a petrophysical examination of the Abu Madi gas reservoir which is the greatest gas-bearing reservoir at Nile Delta Basin in order to examine how far the Messinian tectonics affected the lateral variations of these petrophysical *** petrophysical evaluation was performed based on the wireline log data acquired for five wells,namely,Abu Madi-2,Abu Madi-7,El Qara-3,Nidoco-7,and Nidoco-9 drilled within the Abu Madi *** petrophysical assessment for the most promising zone intervals within the Abu Madi sandstones in the inspected wells show that the total porosity varies between 17%and 22%,the effective porosity ranges from 7%to 19%,the shale volume fluctuates between 16%and 30%,hydrocarbon satu-ration varies from 37%to 76%,and the bulk volume of water varies between 0.02 and *** significant variations in the petrophysical properties of the Abu Madi reservoir are attributed to the tectonic influence during the deposition of the Abu Madi Formation as a part of the Late Miocene synrift megasequence in the Nile Delta *** conclusion confirms that the petrophysical properties of sandstone reservoirs are function of tectonic and structural deformation.

关键词： Abu madi formation Messinian reservoir Nile delta basin Petrophysical parameters Well logging

Prevelance of Bovine Cysticercosis in Egypt and the Cysticidal Effect of Two Extracts Obtained from Balanites aegyptiaca and Moringa oleifera on Mice Model Affected with T. saginata Cysticerci

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Open Journal of Animal Sciences 2024年第2期14卷 39-55页

作者： Omnia M. Kandil Noha M. F. Hassan Doaa Sedky Hatem A. Shalaby Heba M. Ashry Nadia M. T. Abu El Ezz Sahar M. Kandeel Mohamed S. abdelfattah L. Ying Ebtesam M. Al-Olayan Parasitology and Animal Diseases Department Veterinary Research Institute National Research Centre Dokki Cairo Egypt Chemistry of Natural Compounds Department Pharmaceutical and Drugs Industries Research Institute National Research Centre Dokki Cairo Egypt Chemistry Department Faculty of Science Helwan University Cairo Egypt State Key Laboratory of Plateau Ecology and Agriculture Qinghai University Xining China College of Agriculture and Animal Husbandry Qinghai University Xining China Department of Zoology Collage of Science King Saud University Riyadh Saudi Arabia

The aim of the present study was to determine the prevalence of bovine cysticercosis in both cattle and buffloas, in Egypt and to assess the cysticidal efficacy of Balanites aegyptiaca fruits (B. aegyptiaca) and Moringa oleifera seeds (M. oleifera) extracts in experimentally infected mice. The study detected the level of tumor necrosis factor (TNF-α) to monitor the immune and inflammatory responses of experimentally infected mice. Through meat inspection, a total number of 2125 male bovine, 2 to 5 years old, (1125 cattle and 1000 buffloes) were examined under the authority of Albsatine and Alwaraq official abattoirs in Cairo Governorate, Egypt covering the period extended from March 2022 to April 2023. The overall prevalence of the disease among bovine was 7.8% (6.31% of cattle and 9.5% of buffloes). Besides, B. aegyptiaca and M. oleifera extracts showed cysticidal activity in experimentally infected mice. A decrease in the numbers of cysticerci was found in all treated mice groups, and up to 88% reduction was achieved in the B. aegyptiaca-treated group;higher than that was recorded in both M. oleifera (72.23%) and albendazole-treated ones (80.56%). Postmortem findings proved that M. oleifera and B. aegyptiaca reduced cysticerci numbers comparable to a commercial anthelmintic. The study showed a significant decrease (P 0.001) in TNF-α levels after treatment with Balanites and Moringa extracts, compared with the untreated control and the albendazole-treated groups.

关键词： Prevalence Balanites aegyptiaca Moringa oleifera Mice T. saginata Cysticerci

Galectins dysregulation: A way for cancer cells to invade and pervade

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Oncology Research 2022年第3期30卷 129-135页

作者： MAHMOUD M.abdelfattah REHAM HELWA Molecular Cancer Biology Group Zoology DepartmentFaculty of ScienceAin Shams UniversityCairoEgypt Faculty of Basic Science King Salman International UniversitySouth SinaiEgypt

Galectins are sticky molecules that bind toβ-*** interactions render them essential players in many cellular *** imbalance of galectin expression was reported in many *** cancer,galectins interact with the extracellular matrix,evade the immune system,and potentially have broad interactions with blood *** the last ten years,since 2010,we did focus on galectin research in different cancer ***ﬁndings showed an interaction between cancer cells and erythrocytes via ***,we found that upregulation of galectins was associated with lymph node metastasis in ovarian ***,with this,we shortly review some important aspects of galectins and their potential importance in more profound understanding of cancer progression and theﬁeld of cancer biomarkers.

关键词： Galectins Cancer Metastasis Erythrocytes Invasion

3D static reservoir modelling of Abu Madi paleo-valley in Baltim Field,Offshore Nile Delta Basin,Egypt

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Petroleum Research 2022年第4期7卷 473-485页

作者： Mohammad abdelfattah Sarhan Tamer Hassan Ahmed Saied Ali Geology Department Faculty of ScienceDamietta University34517Egypt Qarun Petroleum Company(Apache J.V) New MaadiCairo11742Egypt

The 3D static reservoir modelling provides a good understanding for the hydrocarbon reservoir distri-bution and *** study aimed to construct a static model to study the gas-reservoir potentiality of the Messinian Abu Madi Formation in Baltim Field,offshore Nile Delta *** model was constructed based on the interpretation of the thirty-seven 2D seismic sections besides the analysis of well logs data for five drilled wells(Baltim East-2,Baltim East-3,Baltim East-5,Baltim North-1 and Baltim North-2).The seismic interpretation exposed that the Abu Madi incised valley in Baltim Field is oriented NNW-SSE with width ranges from 5 to 8 km and approximately 32 km in *** reservoir modelling revealed a relatively homogeneous reservoir facies qualities for gas production in two different zones within the Abu Madi *** trapping mechanism for these intervals is represented by pinching out in the two sides of the Abu Madi paleo-valley and bounded by two faults in the northern and southern parts of the study area.

关键词： Abu madi reservoir Baltim field Nile Delta Basin Seismic interpretation Static model Well logging

Internal electrical fault detection techniques in DFIG-based wind turbines: a review

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Protection and Control of Modern Power Systems 2022年第1期7卷 265-286页

作者： Abdelwahab D.Bebars abdelfattah A.Eladl Gabr M.Abdulsalam Ebrahim A.Badran Electrical Engineering Department Faculty of EngineeringMansoura UniversityEl-MansouraEgypt

The keys factor in making wind power one of the main power sources to meet the world’s growing energy demands is the reliability improvement of wind turbines(WTs).However,the eventuality of fault occurrence on WT com-ponents cannot be avoided,especially for doubly-fed induction generator(DFIG)based WTs,which are operating in severe *** maintenance need increases due to unexpected faults,which in turn leads to higher operating cost and poor *** investigation into DFIG internal fault detection techniques has been carried out in the last *** paper presents a detailed review of these *** discusses the methods that can be used to detect internal electrical faults in a DFIG stator,rotor,or both.A novel sorting technique is presented which takes into consideration different parameters such as fault location,detection technique,and DFIG *** main mathematical representation used to detect these faults is presented to allow an easier and faster under-standing of each *** addition,a comparison is carried out in every section to illustrate the main differences,advantages,and disadvantages of every method and/or *** real monitoring systems available in the market are ***,recommendations for the challenges,future work,and main gaps in the field of internal faults in a DFIG are *** review is organized in a tutorial manner,to be an effective guide for future research for enhancing the reliability of DFIG-based WTs.

关键词： DFIG Wind turbines Internal fault detection Reliability improvement

Comparative framework for AC-microgrid protection schemes: challenges, solutions, real applications, and future trends

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Protection and Control of Modern Power Systems 2023年第2期8卷 99-138页

作者： Ahmed N.Sheta Gabr M.Abdulsalam Bishoy E.Sedhom abdelfattah A.Eladl Electrical Engineering Department Faculty of EngineeringMansoura UniversityEl-MansouraEgypt

With the rapid development of electrical power systems in recent years,microgrids(MGs)have become increasingly *** improve network efficiency and reduce operating costs and emissions because of the integration of distributed renewable energy sources(RESs),energy storage,and source-load management *** these advances,the decentralized architecture of MGs impacts the functioning patterns of the entire system,including control strategy,energy management philosophy,and protection *** this context,developing a convenient protection strategy for MGs is challenging because of various obstacles,such as the significant variance in short-circuit values under different operating modes,two-way power flow,asynchronous reclosing,protection blinding,sympathetic tripping,and loss of *** light of these challenges,this paper reviews prior research on proposed protection schemes for AC-MGs to thoroughly evaluate network protection’s potential *** paper also provides a comprehensive overview of the MG structure and the associated protection challenges,solutions,real applications,and future trends.

关键词： Microgrid Active distribution network Microgrid protection Renewable energy sources Smart grids Distributed energy resources Energy storage