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206篇 您的检索式:作者名="Emam"
    题名 作者 年代 出处 被引量
1CHARACTERIZATION OF EFFICIENT SOLUTIONS FOR MULTI-OBJECTIVE OPTIMIZATION PROBLEMS INVOLVING SEMI-STRONG AND GENERALIZED SEMI-STRONG E-CONVEXITY显示文摘这篇文章的作者对问题的特殊的班的有效解决方案的描述感兴趣。这些类考虑深奥函数的半强壮的电子凸状。为是一个有效或适当地有效的答案的一个可行答案的足够、必要的条件被获得。E.A.Youness Tarek Emam 2008Acta Mathematica Scientia2008,28,1:5
2铂和HF掺杂的H-ZSM-5分子筛催化甲苯与甲醇烷基化反应(英文)显示文摘Toluene was alkylated with methanol in a flow type reactor at temperatures between 300 and 500 °C using H-ZSM-5 zeolite, 0.2%Pt/H-ZSM-5 and hydrofluorinated 0.2%Pt/H-ZSM-5 with HF concentrations of 1.0%, 2.0%, 3.0%, or 4.0%. Pt primarily enhances toluene conversion, total xylenes production, and p-xylene relative to its thermodynamic equilibrium. As the concentration of HF increases from 1.0% to 3.0%, the catalyst activity increases because of the increase in the number of acid sites and their strength. Additionally, the surface area and Pt dispersion also increases. An advantage of increased HF doping is that the formation of voluminous trimethylbenzene (TMB) byproducts is inhibited. However, at a HF concentration of 4.0%, Al and Si are partially leached and then deposited mostly in the wider catalytic pores. This was determined by evaluating the pore volume distribution and we determined that reactivity inhibition was ob-viously present and was due to diffusion restriction.Ahmed K. ABOUL-GHEIT Ateyya A. ABOUL-ENEIN Ahmed E. AWADALLAH Salwa A. GHONEIM Eman A. EMAM 2010催化学报2010,31,10:4
3Cyclooxygenase-2 expression as a predictor of outcome in colorectal carcinoma显示文摘AIM:To correlate cyclooxygenase-2(COX-2)expression profile with clinical and pathological variables to assess their prognostic/predictive value in colorectal carcinoma(CRC).METHODS:Archival tumor samples were analyzed using immunohistochemistry for COX-2 expression in 94 patients with CRC.Patients were diagnosed and treatedat the Departments of Surgery and Oncology,King Abdulaziz University Hospital,Saudi Arabia.RESULTS:Fifty-six percent of the tumors showed positive cytoplasmic COX-2 expression,whereas 44%of cases were completely COX-2-negative.There were no significant correlations between COX-2 expression and sex,age,grade or tumor location.However,COX-2 expression revealed a significant correlation with tumor stage(P=0.01)and distant metastasis(P=0.02),and a borderline association with lymph node involvement(P =0.07).Tumors with high COX-2 expression showed a higher recurrence rate than tumors with no expression(P<0.009).In univariate Kaplan-Meier survival analysis,there was a significant(P=0.026)difference in disease-free survival between COX-2-positive and negative tumors in favor of the latter.COX-2 expression did not significantly predict disease-specific survival,which was much shorter for COX-2-positive tumors.In multivariate(COX)models,COX-2 did not appear among the independent predictors of disease-free survival or disease-specific survival.CONCLUSION:COX-2 expression seems to provide useful prognostic information in CRC,while predicting the patients at high risk for recurrent disease.Jaudah Al-Maghrabi Abdelbaset Buhmeida Eman Emam Kari Syrjnen Abdulrahman Sibiany Mohmmad Al-Qahtani Mahmoud Al-Ahwal 2012World Journal of Gastroenterology2012,18,15:3
4Effectiveness of hepatitis B virus vaccination program in Egypt:Multicenter national project显示文摘AIM:To assess the effectiveness of hepatitis B virus(HBV) vaccination program among fully vaccinated children.METHODS:A national community based crosssectional study was carried out in 6 governorates representing Egypt. A total of 3600 children aged from 9 mo to 16 years who were fully vaccinated with HBV vaccine during infancy were recruited. Face to face interviews were carried out and sera were evaluated for hepatitis B surface antigen(HBsA g),anti-HBV core antibodies(total) and quantitative detection of hepatitis B surface antibody using enzyme linked immunoassays techniques. Samples positive to HBs Ag/anti-HBV core antibodies were subjected to quantitative HBV-DNA detection by real time polymerase chain reaction with 3.8 IU/L detection limit. RESULTS:Sero-protection was detected among 2059 children(57.2%) with geometric mean titers 75.4 ± 3.6 IU/L compared to 3.1 ± 2.1 IU/L among nonseroprotected children. Multivariate logistic analysis revealed that older age and female gender were the significant predicting variables for having non seroprotective level,with adjusted odds ratio 3.3,9.1and 14.2 among children aged 5 to < 10,10 to < 15 and ≥ 15 years respectively compared to those < 5 years and 1.1 among girls compared to boys with P < 0.01. HBs Ag was positive in 0.11% and breakthrough infection was 0.36% and 0.39% depending on positivity of anti-HBc and DNA detection respectively. The prevalence of HBV infection was significantly higher among children aged ≥ 7 years(0.59%) compared to 0.07% among younger children with odds ratio equal to 8.4(95%CI:1.1-64.2) and P < 0.01.The prevalence was higher among girls(0.48%) than boys(0.29%) with P > 0.05. C ON C LU S I ON :T he E gy pt ian c ompuls or y H B V vaccination program provides adequate protection. Occult HBV infection exists among apparently healthy vaccinated children. Adherence to infection control measures is mandatory.Iman I Salama Samia M Sami Zeinab Nabil Ahmed Said Manal H El-Sayed Lobna A El Etreby Thanaa M Rabah Dalia M Elmosalami Amany T Abdel Hamid Somaia I Salama Aida M Abdel Mohsen Hanaa M Emam Safaa M Elserougy Amal I Hassanain Naglaa F Abd Alhalim Fatma A Shaaban Samia A Hemeda Nihad A Ibrahim Ammal M Metwally 2015World Journal of Hepatology2015,7,22:2
5匿名化与共享个体患者数据显示文摘为非医疗目的,尤其是对于研究,共享个体患者数据是一个重要举措。推动数据共享的主要障碍在于对患者隐私的担忧。根据隐私法案和条例,保护患者隐私的方法之一是在共享数据前先对其进行匿名化处理。Khaled El Emam Sam Rodgers Bradley Malin 周思成 2015中国医院院长2015,11,14:2
6草莓温室太阳能热泵系统阶梯式供暖特性显示文摘运用太阳能热泵系统为草莓温室供暖,能有效提升草莓的产量和品质。为探究温室内立体栽培的供暖特性,以及相匹配的太阳能热泵系统的供暖系数(coefficient of performance,COP),该文设计并搭建了太阳能热泵阶梯式供暖系统。以'京藏香'草莓为试材,分析了距离地面0.5、1.0、1.5及2.0 m不同阶梯高度的空间温度,对比了阶梯式供暖的太阳能温室和未供暖的普通温室内的草莓品质及产量。结果表明,在北亚热带低纬高原山地季风气候地区,冬季采用太阳能热泵系统为温室供暖的COP值在3.02~5.15之间。在太阳能温室内种植的草莓产量是普通温室产量的1.56倍,可溶性固形物含量的平均值达10.5%。在太阳能热泵系统阶梯式供暖的温室中,距离地面1.0~1.5 m高度范围内的供暖效果较好,且放置于1.0 m阶梯上的草莓与其他高度的草莓相比,产量最高品质最优,其单果最大值为32.3 g,可溶性固形物含量为12.5%,因此,采用阶梯式供暖的温室中,距离地面1.0 m高度的温度更适宜草莓生长需求。唐伊恋 李明 马逊 Reda Hassanien Emam 2018农业工程学报2018,34,13:2
7Inverse Gas Chromatographic Study of the Oxidation Stability of Lubricating Base Oils via Solubility Parameter Calculations显示文摘The Flory-Huggins interaction parameter(χ1,2∞) and solubility parameter(δ2) and its hydrogen bonding sensing component(δh) were determined using inverse gas chromatography(IGC).These parameters were successfully used in the probes of chemical changes that occur during the oxidation of naphthenic and paraffinic base oils in a GC column.Changes in χ1,2∞ values reflect the different types of intermolecular interactions(dispersive,polar,hydrogen bonding) of the given lubricating base oil during oxidation.The obtained results showed that δh component of solubility parameter is the most important parameter for probing the oxidative-chemical changes during the oxidation of given lubricating oils.MOUSTAFA Nagy Emam EISSA Elham Ahmed 2007色谱2007,25,6:2
8Influences of greenhouse-integrated semi-transparent photovoltaics on microclimate and lettuce growth显示文摘Shading in greenhouses is a simple and cheap method usually used to reduce the intensity of solar radiation and air temperature.Moreover,combining Photovoltaic(PV)panels and crops on the same cropland could alleviate the increasing competition for the agricultural land between food and energy production.In addition,the integration of PV with greenhouses could reduce,or partially replace the energy consumption for greenhouse crop production.Therefore,the aim of this study was to investigate the shading effect of semi-transparent mono-crystalline silicon double glazing photovoltaic panels(STPV),mounted on top of an agricultural greenhouse,which occupied 20%of the roof area,on the microclimate conditions and the growth of lettuce plants inside a greenhouse.Results showed that the combination of STPV and polyethylene cover decreased the solar radiation by 35%to 40%compared to the use of polyethylene cover only for clear days which was in the acceptable range of photosynthetically active radiation for lettuce plants.Moreover,STPV shading decreases the air temperature by 1℃-3℃ and had no effect in the relative humidity under natural ventilation.Furthermore,there were no significant differences(p<0.05)in the growth of lettuce plants between the shaded greenhouse by the STPV and the unshaded.Shading insignificantly increased the fresh weight,leaf area and the chlorophyll contents(p<0.05).In conclusion,the integration of STPV modules can decrease the solar irradiation and the internal air temperatures as well as generate electric energy for environmental control systems without significant influence on the growth of lettuce plants.Meanwhile,it can decrease the water consumption by decreasing the evapotranspiration rate.Reda Hassanien Emam Hassanien Li Ming 2017International Journal of Agricultural and Biological Engineering2017,10,6:2
9Vascular endothelial growth factor immunostaining correlates with postoperative relapse and survival in non-small cell lung caneer显示文摘Yilmaz A Emam D Unsal E 2007Arch Med Res2007,38,7:1
10An internally replicated quasi-experimental comparison of checklist and perspective-based reading of code documents显示文摘Laitenberger O El Emam K Harbich T 2001IEEE Transactions on Software Engineering2001,27,5:1
11The determinant and adjoint of a square fuzzy matrix显示文摘Ragab M Z Emam E G 1994Fuzzy Sets and Systems1994,61,:1
12Improving the Accuracy of Laser Scanning for 3D Model Reconstruction Using Dithering Technique 显示文摘EMAM S M KHATIBI S KHALILI K 2014Procedia Technology2014,12,1:1
13A comprehensive evaluation of capture - recapture models for estimating software defect content 显示文摘L C Briand E I Emam B G Freimut 2000IEEE Transactions on Software Engineering2000,26,6:1
14Computing Travel Time Reliability in Transportation Networks with Multistates and Dependent Link Failures显示文摘AL-DEEK H M EMAM E B 2006Journal of Computing in Civil Engineering2006,20,5:1
15How safe is high-power ultrasonic dissec- tion显示文摘Emam TA Cuschieri A 2003Ann Surg2003,237,2:1
16Effect of drying method on micro structural changes of apples 显示文摘Reza G Askari Zahra Emam - Djomeh Mohammad All Mousavi 2004IDS 2004 Proceedings Brazil2004,8,:1
17Mathematical modeling of gearbox including defects with experimental verification显示文摘Omar F K Moustafa K A F Emam S 2012Journal of Vibration and Control2012,18,9:1
18How safe is high-power ultrasonic dissection?显示文摘TAREK A EMAM M B CUSCHIERI A 2003Ann Surg2003,237,2:1
19An intelligent computing technique for fluid flow problems using hybrid adaptive neural network and genetic algorithm 显示文摘Nameer N E1 - Emam Riadh H A1 - Rabeh 2011Applied Soft Computing2011,11,4:1
20Biphasic ceramics and fibrin sealant for bone reconstruction in ear surgery显示文摘Bagot d'Arc M Daculsi G Emam N 2004Ann Otol Rhinol Laryngol2004,113,9:1
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