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Analytical approximate solution for nonlinear space-time fractional Klein Gordon equation

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Chinese Physics B 2013年第1期22卷 33-38页

作者： Khaled A. Gepreel Mohamed S. mohameda Mathematics Department Faculty of Science Zagazig University Zagazig Egypt Mathematics Department Faculty of Science Taif University Taif Saudi Arabi Mathematics Department Faculty of Science Al-Azhar University Nasr City 11884 Cairo Egypt

The fractional derivatives in the sense of Caputo and the homotopy analysis method are used to construct an approximate solution for the nonlinear space-time fractional derivatives Klein-Gordon equation. The numerical results show that the approaches are easy to implement and accurate when applied to the nonlinear space-time fractional derivatives Klein- Gordon equation. This method introduces a promising tool for solving many space-time fractional partial differential equations. This method is efficient and powerful in solving wide classes of nonlinear evolution fractional order equations.

关键词： homotopy analysis method nonlinear space-time fractional Klein-Gordon equation Caputo derivative

Monitoring and analysing the Emirate of Dubai’s land use/land cover changes:an integrated,low-cost remote sensing approach

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International Journal of Digital Earth 2018年第11期11卷 1132-1150页

作者： Samy Ismail Elmahdy Mohamed Mostafa mohameda Civil and Environmental Engineering Department College of Engineering United Arab Emirates UniversityAl-AinUnited Arab Emirates Irrigation and Hydraulics Department Faculty of EngineeringCairo UniversityGizaEgypt

This study presents a modified low-cost approach,which integrates the spectral angle mapper and image difference algorithms in order to enhance classification maps for the purpose of monitoring and analysing land use/land cover change between 2000 and 2015 for the Emirate of *** approach was modified by collecting 320 training samples from QuickBird images with a spatial resolution of 0.6 m,as well as carrying out field observations,followed by the application of a 3×3 Soble filter,sieving classes,majority/minority analysis,and clump classes of the obtained classification *** accuracy assessment showed that the targeted 2000,2005,2010 and 2015 classification maps have 88.1252%,89.0699%,90.1225%and 96.0965%accuracy,*** results showed that the built-up area increased by 233.721 km^(2)(5.81%)between 2000 and 2005 and continues to increase even up and till the present *** assessment of changes in the periods 2000–2005 and 2010–2015 confirmed that net vegetation area losses were more pronounced from 2000 to 2005 than from 2010 to 2015,dropping from 47,618 to 40,820 km^(2),*** study is aimed to assist urban planners and decision-makers,as well as research institutes.

关键词： Dubai change detection image difference SAM algorithm

The microsatellite polymorphism of heme oxygenase-1 is associated with baseline plasma IL-6 level but not with restenosis after coronary in-stenting

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Chinese Medical Journal 2005年第18期118卷 1525-1532页

作者： LI Ping Mohamed A. elrayess Abuzeid H. Gomma Jutta Palmen Emma Hawe Kim M. Fox Steve E. Humphries Cardiovascular Department Second Affiliated Hospital of JiangxiMedical College Nanchang 330006 China Centre for Cardiovascular Genetics British Heart FoundationLaboratories Department of Medicine Rayne Building 5 UniversityStreet London WC1E 6JF National Heart ＆ Lung Institute and Royal Brompton Hospital Cardiac Medicine Sydney Street London SW3 6NP

Background Vascular smooth muscle cells （VSMCs） can express heme-oxygenase （HO）, a rate-limiting enzyme in the degradation of heme to bilirubin, ferritin and carbon monoxide （ CO）. VSMC-derived CO can suppress VSMC proliferation and may serve as an antiproliferation factor. The promoter region of HO-1 shows a polymorphism with different （GT）n repeats that has been reported to differently induce gene expression. The objective of this study was to examine the effect of this variation on the occurrence of restenosis after in-stent treatment in patients with coronary artery disease. Methods Candidates who underwent coronary stent implantation were genotyped for the HO-1 promoter polymorphism using polymerase chain reaction （PCR） and automated DNA capillary sequencer. Serum levels of IL-6 and C-reactive protein （CRP） were obtained at baseline, 24 hours and 48 hours after stenting. The primary end point for the study was angiographic evidence of in-stent restenosis at 6 months. All parameters for evaluation of restenosis were analysed by quantitatve computer-assisted angiographic analysis （QCA）. Results One hundred and eighty-seven patients who underwent coronary stent implantation were studied of whom 27.8% showed 〉150% restenosis after 6 months. The distribution of （GT）n repeats of all patients in the promoter region of HO-1 genotype ranged from 22 to 42, with （GT） 25 and （GT） 32 being the two most common alleles. The allelic repeats were divided into the short class （S） with 29 （ GT）., the middle class （M） with 30- 37 （GT）n and the long class （L） with 38 （GT）n. There was no significant difference in the restenosis between the genotype groups or between post operation levels of inflammation markers, but carriers of the S allele （ n = 120） had 33.3% lower baseline IL-6 compared with non-S carriers （n =67, P =0. 0008）. Conclusions Although no association was observed between the HO-1 promoter polymorphism and coronary in-stent restenosis following the stent procedure, the

关键词： heme oxygenase·polymorphism·interleukin-6·C- reactive protein·restenosis

苹果品种“Elstar”和“Jonagold”发育和成熟时果皮中类黄酮和绿原酸的变化

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国外作物育种 2002年第3期21卷 50-51页

作者： mohameda.Awad 邱敦莲等

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AVO法探测非产层灰岩中白云岩的含气性

国外油气地质信息 2003年第4期 43-44页

作者： mohameda.Eissa 易旸钱华

AVO技术已经成功应用于含气砂岩储层的勘探，如在得克萨斯湾岸、北海和西非等地区，但成功用于碳酸盐岩勘探的例子则不多见。

关键词： AVO技术含气性白云岩勘探灰岩探测碳酸盐岩砂岩储层西非北海

苹果皮中类黄酮化合物、花青苷和绿原酸的形成：生长调节剂和果实熟性的影响

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国外作物育种 2003年第5期22卷 34-35页

作者： mohameda．Awad AntondeJager 谢国禄

血红素氧化酶基因启动子GT序列变量与冠状动脉支架术后再狭窄

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血红素氧化酶基因启动子GT序列变量与冠状动脉支架术后再狭窄

果实养分与Elstar苹果表皮中类黄酮化合物和绿原酸浓度间的关系

中华医学会心血管病分会第八次全国心血管病学术会议

作者：李萍 Mohamed A.elrayess Abuzeid H.Gomma Jutta Palmen Emma Hawe Kim M.Fox Steve E.Humphries 江西医学院二附院心内科 Centre for Cardiovascular Genetics BHF laboratories University College London National Heart&Lung Institute and Royal Brompton Hospital National Heart&Lung Institute and Royal Brompton Hospitab

目的血管平滑肌细胞可表达血红素氧化酶(HO),后者是降解血红素成为胆红素、亚铁及一氧化碳的限速酶。血管平滑肌来源的一氧化碳已证实能抑制血管平滑肌增殖。研究表明Ⅰ型HO基因启动子部位的GT重复序列长短变量可影响该基因的转录水平,...

目的血管平滑肌细胞可表达血红素氧化酶(HO),后者是降解血红素成为胆红素、亚铁及一氧化碳的限速酶。血管平滑肌来源的一氧化碳已证实能抑制血管平滑肌增殖。研究表明Ⅰ型HO基因启动子部位的GT重复序列长短变量可影响该基因的转录水平,较短GT重复序列能使该基因转录活性增加,因而对多个疾病的发生具有保护作用。本研究的目的为观察GT重复序列长短变量差异对冠脉支架置入术后再狭窄的影响。方法187例成功行冠脉支架置入术的患者,6个月随访时约27.8%管腔再狭窄超过50%。用PCR和DNA测序仪确定HO基因启动子部位的GT重复次数。高敏法测定术前及术后24、48小时血浆中的白介素6和C反应蛋白水平。结果各基因型组间术后IL-6和CPR水平以及再狭窄情况无差异,但携带较短GT序列者(n=120)术前基础IL-6值比非短GT序列携带者(n=67)低大约33.3%(P=0.0008)。结论尽管未能说明HO-1基因多态能影响支架置入术后的炎性水平及再狭窄情况,但它和基础IL6浓度的关系提示,短GT序列可能保护动脉粥样的炎症过程。

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国外作物育种 2003年第3期22卷 54-54页

作者： mohameda.Awad 谢国禄

HO基因启动子GT序列变量与冠脉支架术后再狭窄

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介入放射学杂志 2003年第S1期12卷 169-页

作者：李萍 Mohamed A.elrayess Abuzeid H.Gomma Jutta Palmen Emma Hawe Kim M.Fox Steve E.Humphries 江西医学院第二附属医院心内科南昌330006 Centrefor Cardiovascular Genetics BHF laboratoriesUniversity CollegeLondon National Heart&Lung Institute and Royal Brompton Hospital National

目的　血管平滑肌细胞可表达血红素氧化酶 (HO) ,后者是降解血红素成为胆红素、亚铁及一氧化碳的限速酶。血管平滑肌来源的一氧化碳已证实能抑制血管平滑肌增殖。研究表明Ⅰ型HO基因启动子部位的GT重复序列长短变量可影响该基因的转录水... 详细信息

目的　血管平滑肌细胞可表达血红素氧化酶 (HO) ,后者是降解血红素成为胆红素、亚铁及一氧化碳的限速酶。血管平滑肌来源的一氧化碳已证实能抑制血管平滑肌增殖。研究表明Ⅰ型HO基因启动子部位的GT重复序列长短变量可影响该基因的转录水平 ,较短GT重复序列能使该基因转录活性增加 ,因而对多个疾病的发生具有保护作用。本研究的目的为观察GT重复序列长短变量差异对冠脉支架置入术后再狭窄的影响。方法　 187例成功行冠脉支架置入术的患者 ,6个月随访时间 2 7.8%管腔再狭窄超过 5 0 %。用PCR和DNA测序仪确定HO基因启动子部位的GT重复次数。高敏法测定术前及术后 2 4、4 8小时血浆中的白介素 6和C反应蛋白水平。结果　各基因型组间术后IL 6和CRP水平以及再狭窄情况无差异 ,但携带较短GT序列者 (n =12 0 )术前基础IL 6值比非短GT序列携带者 (n =6 7)低大约 33.3% (P =0 .0 0 0 8)。结论　尽管未能说明HO 1基因多态能影响支架置入术后的炎性水平及再狭窄情况 ,但它和基础IL 6浓度的关系提示。

关键词：序列 HO 基因 GT