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| 1 | 添加Si/Ti对粉末冶金FiNiCrCo高熵合金物理力学和化学性能的影响显示文摘用粉末冶金法制备FiNiCrCoSi_(x)和FiNiCrCoTi_(x)高熵合金(HEAs)。其中x为0、0.3%、0.6%和0.9%(质量分数)。所有合金中均形成均匀分布的固溶体。与FiNiCrCo高熵合金相比,加入Si和Ti后,合金的密度和硬度提高,研究合金在不同载荷下的磨损率。结果表明,含0.3%Si和0.9%Ti的高熵合金磨损率最低。用XRD、SEM和EDX研究HEAs的相组或、晶粒尺寸和显微组织。通过H_(2)SO_(4)、HNO_(3)和HCl溶液浸泡实验,研究Si和Ti含量对烧结态FiNiCrCoSi_(x)和FiNiCrCoTi_(x) HEAs腐蚀行为和表面形貌的影响。在样品表面观察到不同尺寸的均匀腐蚀和局部点烛,且FiNiCrCoSi0.3合金具有更小,更少的蚀坑,和优异的显微组织。 | Sarah HEDYA Lamiaa MOHAMED Ghalia GABER Omayma ELKADY Hassan MEGAHED Shimaa ABOLKASSEM | 2022 | Transactions of Nonferrous Metals Society of China2022，32，8： | 2 |
| 2 | Metallothionein Induction Reduces Caspase-3 Activity and Tnfα Levels with Preservation of Cognitive Function and Intact Hippocampal Neurons in Carmustine-Treated Rats显示文摘 | Gouda K. Helal Abdulaziz M. Aleisa Omayma K. Helal Salim S. Al-Rejaie Abdulaziz A. Al-Yahya Abdulhakeem A. Al-Majed Othman A. Al-Shabanah | 2009 | Oxidative Medicine and Cellular Longevity2009，，1： | 1 |
| 3 | Anti‐apoptotic effects of tamarind leaves against ethanol‐induced rat liver injury显示文摘 | Asser I.Ghoneim Omayma A.Eldahshan | 2012 | Journal of Pharmacy and Pharmacology2012，，3： | 1 |
| 4 | Spectrophotometric Determination of Omeprazole,Lansoprazole and Pantoprazole in Pharmaceutical Formulations显示文摘 | ABDEL-Aziz M W OMAYMA A R AZZA A G | 2002 | Journal of Pharmaceutical and Biomedical Analysis(S0371-7085)2002，30，4： | 1 |
| 5 | Electroplating of chromium and Cr-carbide coating for carbon fiber 显示文摘 | OMAYMA A G ABOU TABL M H ABDEL HMID Z | 2006 | Surface & Coatings Technology2006，201，： | 1 |
| 6 | Influence of emulsifiers on the formation and crystallization of solid lipid nonoparticles显示文摘 | Kinawy E I Omayma S Sandra P | 2013 | Chemical Engineering & Technology2013，36，： | 1 |
| 7 | Association of Blastocystis hominis genetic subtypes with urticaria 显示文摘 | Dina M Abdel Hameed Omayma M | 2011 | Parasitol Res2011，108，10： | 1 |
| 8 | 碳化物弥散强化高熵合金的耐磨性、硬度和显微组织显示文摘对(CrFeCoNi)高熵合金(HEA)添加5 wt%~20 wt%的WC颗粒进行增强,并通过粉末冶金制备。首先将混合粉末在700 MPa下压实;然后,在真空炉中在1200℃下烧结90 min,研究了烧结样品的密度、相组成和微观结构。估计了硬度、抗压强度、耐磨性和热膨胀系数(CTE)。结果显示添加WC后,合金的密度得到提高。XRD结果表明合金中形成了新的FCC碳化铬相。扫描电子显微镜(SEM)结果显示碳化物相在合金基体上分布良好。通过增加WC含量,CTE逐渐降低。添加WC可以提高抗压强度。建立了数学模型以预测HEA样品的强度行为。随着WC含量的增加,合金的硬度提高约20.35%,此外,无WC HEA的磨损率为1.70×10^(-4) mm^(3)/(N·m),大约是添加20 wt%WC HEA磨损率(3.81×10^(-5) mm^(3)/(N·m))的4.5倍,这意味着合金的耐磨性随WC含量的增加而得到显着改善。 | A.Hegazy KHALLAF M.BHLOL O.M.DAWOOD Omayma A.ELKADY | 2022 | Journal of Central South University2022，29，11： | 1 |
| 9 | Spectrophotometric and HPLC determination of secnidazole in pharmaceutical tablets显示文摘 | Abdel FM Heba HA Omayma AR | 2000 | J Pharm Biomed Anal2000，22，： | 1 |
| 10 | The septins: roles in cytokinesis and other processes显示文摘 | Mark S Longtine Douglas J DeMarini Maria L Valencik Omayma S Al-Awar Hanna Fares Claudio De Virgilio John R Pringle | 1996 | Current Opinion in Cell Biology1996，，1： | 1 |
| 11 | Morphological and molecular evaluation of some Egyptian pomegranate cultivars显示文摘 | Omayma M I Rania A A Y lbrahim A M | 2014 | African Journal of Bioteehnology2014，13，2： | 1 |
| 12 | Controlling the Risk of Construction Delay in the Middle East: State-of-the-Art Review显示文摘 | Omayma Hashim Motaleb Mohammed Kishk | 2015 | Journal of Civil Engineering and Architecture2015，9，5： | 0 |
| 13 | Seasonal Effect on Biomarkers of Exposure to Petroleum Hydrocarbons in the Coasts of North Western Suez Gulf,Egypt显示文摘Petroleum hydrocarbons of surface water were collected from eight loca-tions of from the coasts of north western Suez Gulf,Egypt.The extracted petroleum hydrocarbons were determined by gas chromatography-flame ionization detector and quantified by integrating the areas of both the resolved and unresolved components.The results confirm that the con-centration is relatively higher than the recommended in the regulations of the Egyptian low of Environment of No.4/1994 of petroleum products.At various locations.The dissolved petroleum hydrocarbons ranged from 5.639 to 74.8 and 1.868 to 65.698 mg/ml for summer and winter sea-sons,respectively.This indicates that chronic oil pollution,in addition to hydrocarbon concentrations,the diagnostic indices used shows that the hydrocarbons in the area were comes from biogenic,petrogenic and anthropogenic sources.FT-IR spectrometric analysis confirms die petro-genic nature of pollutants. | Omayma E.Ahmed Mustafa M.Emara Nazik A.Farid1 Enas A.El-Sabagh Eman M.Kamal | 2019 | Journal of Environmental & Earth Sciences2019，1，1： | 0 |
| 14 | Chemical Composition,Cytotoxic and Anti-arthritic Activities of Hexane Extracts of Certain Schinus Species显示文摘The genus Schinus(Anacardiaceae)comprises about 29 species that are utilized in both traditional and current medicine to alleviate various disorders such as rheumatism,bronchial infections,stomach upset,menstrual disturbance,bronchitis,and conjunctivitis.In this study we aimed to investigate the chemical composition of hexane extracts obtained from Schinus polygamous and Schinus terebinthifolius leaves as well as their cytotoxic and anti-arthritic activities.The GC-MS analysis of S.polygamus leaves revealed identification of fifty-five components:being betulin(6.54%),phytol acetate(5.27%),lupeol(3.96%),palmitic acid methyl ester(3.58%)and heptacosane(3.25%).While,seventeen compounds were identified in S.terebinthifolius leaves,predominately characterized by phytol(14.70%),lupeol(13.33%),linolenic acid methyl ester(11.17%),palmitic acid methyl ester(7.74%),and 28-oxours-12-en-3-yl acetate(7.44%).Both extracts showed moderate cytotoxic activities against hepatocellular carcinoma cells with IC_(50) values of 102.65 and 65.55μg/mL,respectively.While colorectal carcinoma cell line presented IC_(50) values of 217.78 and 83.55μg/mL,respectively.Further,both extracts provided moderate anti-arthritic effects(IC_(50):80.12 and 63.09μg/mL,respectively)using protein denaturation test,compared to diclofenac sodium(IC_(50)=15.12μg/mL). | Heba A.S.El-Nashar Nada M.Mostafa Omayma A.Eldahshan Abdel Nasser B.Singab | 2021 | Journal of Pharmacy and Pharmacology2021，9，11： | 0 |
| 15 | Investigation of SARS-CoV-2 Main Protease Potential Inhibitory Activities of Some Natural Antiviral Compounds Via Molecular Docking and Dynamics Approaches显示文摘Coronaviruses caused an outbreak pandemic disease characterized by a severe acute respiratory distress syndrome leading to the infection of more than 200 million patients and the death of more than 4 million individuals.The primary treatment is either supportive or symptomatic.Natural products have an important role in the development of various drugs.Thus,screening of natural compounds with reported antiviral activities can lead to the discovery of potential inhibitory entities against coronaviruses.In the current study,an in-silico molecular docking experiment was conducted on the effects of some of these natural antiviral phytoconstituents,(e.g.,procyanidin B2,theaflavin,quercetin,ellagic acid,caffeoylquinic acid derivatives,berginin,eudesm-1β,6α,11-triol and arbutin),on the crystal structure of SARS-CoV-2 main protease(PDB ID:6w63)using AutoDock-Vina software.Many of the docked compounds revealed good binding affinity,with procyanidin B2(–8.6 Kcal/mol)and theaflavin(–8.5 Kcal/mol)showing a better or similar binding score as the ligand(–8.5 Kcal/mol).Molecular dynamics simulations were carried out at 100 ns and revealed that procyanidin B2 forms a more stable complex with SARS-CoV-2 main protease than theaflavin.Procyanidin B2,theaflavin,and 4,5-dicaffeoylquinic acid were evaluated for toxicity by ProTox-II webserver and were non-toxic according to the predicted LD50 values and safe on different organs and pathways.Additionally,these phytoconstituents showed good ADME properties and acceptable lipophilicity,as evaluated using WLOGP.Amongst the tested compounds,procyanidin B2 showed the highest lipophilic value.It is worth mentioning that these natural inhibitiors of SARS-CoV-2 main protease are components of green and black tea that can be used as a supporting supplement for COVID patients or as potential nuclei for further drug design and development campaigns. | Nada M.Mostafa Muhammad I.Ismail Amr M.El-Araby Dina M.Bahgat Ahmed M.Elissawy Ahmed M.Mostafa Omayma A.Eldahshan Abdel Nasser B.Singab | 2022 | Phyton-International Journal of Experimental Botany2022，91，5： | 0 |
| 16 | BOD Composite as a New Eco-Friendly Corrosion Inhibitor显示文摘BOD composite,(E)-4-(2-(benzo[d]oxazol-2-yl)vinyl)-N,N-dimethylaniline is a new eco-friendly corrosion inhibitor versus P355 Carbon Steel(Cs).BOD was examined in 1.0 N HCl corrosive solution utilizing TP,EIS and EFM tests.EIS curves show that adsorption of BOD increases the transfer resistance and decrease the capacitance of interface metal/solution.Molecular docking was utilized to predict the binding between BOD composite with the receptor of 3tt8-hormone of crystal structure analysis of Cu Human Insulin Derivative.The morphology of inhibited P355 Cs was analyzed by checking electron magnifying instrument innovation with energy dispersive X-beam spectroscopy(SEM EDX). | A.M.Eldesoky A.Attia Omayma E.Ahmed M.Abo-Elsoud | 2020 | 材料科学与工程(中英文B版)2020，10，1： | 0 |
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