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| 1 | Thick and Dense Anodic Oxide Layers Formed on Aluminum in Sulphuric Acid Bath显示文摘Thick and dense oxide layers were obtained on aluminium in sulphuric acid electrolyte. For this purpose, the methodology of experimental design was used. A three-variables Doehlert design (bath temperature, anodic current density, sulphuric acid concentration), was achieved. In order to maximize the growth rate and the density of the anodic oxide layer, optimum path study was conducted. Under the determined optimal anodizing conditions (5.7℃, 3 A·dm -2 , C sul =140 g·L -1 ), the estimated response values were 0.86 μm·min -1 and 3.12 g·cm -2 for growth rate and density, respectively. The morphology of optimum layer was examined by scanning electron microscopy (SEM). The compactness of the optimum anodic layer can be correlated with its morphology revealed by SEM observations. | W. Bensalah M. Feki M. Wery H.F. Ayedi | 2010 | Journal of Materials Science & Technology2010,26,2: | 4 |
| 2 | Mineralogy,M-type tetrad effect and radioactivity of altered granites at the G.Abu Garadi shear zone,central Eastern Desert,Egypt显示文摘The G. Abu Garadi area is covered mainly by metasediments, alkali feldspar granites and stream sediments. The alkali feldspar granite is traversed by a major strike-slip fault trending in an N-S direction as well as two subordinate sets of faults trending NW to WNW for the first one and NE for the second one. These faults represent the shear zones affected by magmatic (syngenetic) as well as hydrothermal (epigenetic) activities causing alteration of the granitic rocks. The most common alteration features are albitization, greisenization and koalinitization. The mass balance calculations of the studied altered samples show enrichments in Zr, Y, Ni, U, Th and Ga and depletions in Zn, Sr, Nb, Ba, Pb, Cu and V. Only the greisenized samples exhibit a significant enrichment in Nb, ∑REE budget and pronounced lanthanide tetrad effect (M-type), especially TE1,4, while weakly expressed tetrad effects are for the other albitized and koalinitized samples. Mineralogically, the common accessory minerals in the altered samples include samarskite-(Y), betafite, uranothorite, zircon, fluorite and cassiterite. The greisenized granites contain high eU and eTh than the other altered types, where they are characterized by an assemblage of the radioactive minerals; samarskite-(Y), betafite, uranothorite in addition to zircon. The inter-element relationships between U and Th and also their ratios illustrate that the radioelement distribution in these granites is mainly governed by magmatic processes, in addition to post-magmatic ones. The distribution of chemical elements and the fractionation of some isovalents within the shear zone are largely controlled by the newly formed mineral phases. With respect to uranium mobilization, uranium migrated from the host alkali feldspar granites of G. Abu Garadi, while the shear zones acted as traps for the migrated uranium. Moreover, U migrated in the shear zone during greisenization and albitization, and migrated out during koalinitization. | El Nahas H.A. El Feky M.G. Mira H. | 2011 | Chinese Journal Of Geochemistry2011,30,2: | 3 |
| 3 | Age-related decrease in aromatase and estrogen receptor (ERα and ERβ) expression in rat testes: protective effect of low caloric diets显示文摘瞄准:在身体上并且在阴囊的重量上在热量的限制( CR1 )并且在营养( CR2 )下面的老鼠老化上检验效果在二种酶的抗氧化剂(超级氧化物 dismutase 和过氧化氢酶)上,在类脂化合物上每氧化并且在阴囊的 aromatase 和雌激素受体的表示上(嗯)。方法:CR 在 1-month-old 老鼠被开始并且继续直到 18 个月的年龄。结果:在控制和 CR2 老鼠 aromatase 并且的年龄相关的减少嗯(α
和 β
) 基因表示被观察;在平行,阴囊的重量,并且 epididymal spermatozo 的全部的数字和活动性的减少被记录。另外,在控制和 CR2 老鼠变老被重要减少每氧化水平在阴囊的超级氧化物 dismutase,过氧化氢酶活动,和类脂化合物的增加伴随(thiobarbituric 酸反应物质) ,与精子发生的改变联系了。相反地,热量的限制处理施加了保护的效果,所有参数是老化影响的更少。结论:这些结果在老化期间显示那,一本低热量的食谱(不在营养下面) 为精子发生是有益的并且多半经由 aromatase/ER 能在起一个作用的细胞的抗氧化剂防卫系统的增加改进房间的保护。 | Khaled Hamden Dorothee Silandre Christelle Delalande Abdefattah El Feki Serge Carreau | 2008 | Asian Journal of Andrology2008,10,2: | 2 |
| 4 | Mineralogy,geochemistry,radioactivity and environmental impacts of Gabal Marwa granites,southeastern Sinai,Egypt显示文摘The Gabal Marwa area is located in the southeastern part of Sinai,Egypt.It comprises gneisses and migmatites,granodiorites and monzogranites.Field,petrographic,mineralogic and chemical investigations indicated that the Gabal Marwa granites are classified as granodiorites and monzogranites.The monzogranites constitute the most predominant rock unit exposed in the study area.They have been subjected to hydrothermal alterations,especially along the shear zones.Sericitization,desilicification,nametasomatism and development of spotty or dendritic manganese oxides are the most pronounced alteration features.These alterations resulted in the increase of TiO2,Al2O3,FeOt,MnO,CaO,MgO,Na2O,K2O and Cr,Zr,Rb,Y and Sr and the decrease of SiO2,P2O5,Ni,Zn,Ba and Nb.Radiometric studies indicated that the altered granites belong to high thorium,high uranium granites.The U,Th,U and Th,Th/U,Th and U-K variation diagrams suggested that magmatic processes controlled the distribution of these elements but the effect of hydrothermal alteration processes were clearly distinct.The Scanning Electron Microscope and X-ray Diffraction analyses indicated that the most important radioactive minerals include uranothorite,thorite,zircon,monazite and samarskite.Cinnabar and Mn minerals were also found.From the U,Th,Ra and K activity concentrations obtained for all the studied granitic samples,radium equivalent activity(Raeq),external hazard index(Hex),and internal hazard index(Hin),were calculated to assess the radiation hazard to human beings living in dwellings made of the studied granites.Altered monzogranites have radioactivity above the proposed acceptable level and,therefore,caution must be taken when these granites are used as building materials. | El Feky M.G. El Mowafy A.A. Abdel Warith A. | 2011 | Chinese Journal Of Geochemistry2011,30,2: | 2 |
| 5 | Oral administration of Eucalyptus globulus extract reduces the alloxan-induced oxidative stress in rats显示文摘 | Soussi Ahlem Hamden Khaled Marouane Wafa Bezzine Sofiane Damak Mohamed Murat Jean-Claude El Feki Abdelfattah | 2009 | Chemico-Biological Interactions2009,,1: | 2 |
| 6 | Effects of cryopreservation on human sperm deoxyribonucleic acid integrity显示文摘 | Nassira Zribi Nozha Feki Chakroun Henda El Euch Jalel Gargouri Ali Bahloul Leila Ammar Keskes | 2010 | Fertility and Sterility2010,,1: | 1 |
| 7 | Sliding Mode Control and Synchronization of Chaotic Systems with Parametric Uncertainties显示文摘 | Feki M | 2009 | Chaos Solitons Fractals2009,41,3: | 1 |
| 8 | Correlation between nerve conduction studies and clinical scores in diabetic neuropathy显示文摘 | Feki I Lefaucheur JP | 2001 | Muscle & Nerve2001,24,4: | 1 |
| 9 | Hyperhomocysteinemia and end stage renal disease: determinants and association with cardiovascular disease in Tunisian patients 显示文摘 | Fellah H Feki M Hsairi M | 2003 | Clin Chem Lab Med2003,41,5: | 1 |
| 10 | Correlation between nerve conduction studies and clinical dcores in diabetic neuropathy显示文摘 | Feki I Lefaucheur JP | 2001 | Muscle Nerve2001,24,: | 1 |
| 11 | Prevalence and risk factors of hyperhomocysteinemia in Tunisian patients with Crohn's disease显示文摘 | Kallel L Feki M Sekri W | 2011 | J Crohns Colitis2011,5,2: | 1 |
| 12 | Thyroid disorders in pregnancy : frequency and association with selected diseases and obstetrical complications in Tunisian women 显示文摘 | Feki M Omar S Menif O | 2008 | Clin Biochem2008,41,12: | 1 |
| 13 | BARD1 induces apoptosis by catalysing phosphorylation of p53 by DNA-damage response kinase 显示文摘 | Feki A Jefford CE Berardi P | 2005 | Oncogene2005,24,23: | 1 |
| 14 | Anfidiabetic and anfioxidant effects of hydroxytyrosol and oleuropein from olive leaves in alloxan-diabetic rats 显示文摘 | JEMAI H FEKI A EI SAYADI S | 2009 | Journal of Agricultural and Food Chemistry2009,57,19: | 1 |
| 15 | Hyperhomocys- teinemia and end-stage renal disease: determinants and asso- ciation with cardiovascular disease in Tunisian patients 显示文摘 | FELLAH H FEKI M HSAIRI M | 2003 | Clin Chem Lab Med2003,41,5: | 1 |
| 16 | D S S A, EI-Sayed A F M, Ezzal etary taurine enhances utilization in larval Nile (Oreochromis niloticus) fed s meal-based diets显示文摘 | AI- Feky A A | 2015 | Aquaeulture don2015,,: | 1 |
| 17 | Vitamin E:structure,metabolism,and functions显示文摘 | Feki M Souissi M Mebazaa A | 2001 | Ann Med Interne (Paris)2001,152,38: | 1 |
| 18 | Human pluripotentstem cells differentiated in fully defined medium generate hemato-poietic CD34+and CD34-progenitors with distinct characteristics显示文摘 | Laurie Chicha Anis Feki Alessandro Boni | 2011 | PLoS One2011,6,14: | 1 |
| 19 | Effect of some organic surfactants on corrosion inhibition of steelin sea water显示文摘 | SHALABY M N OSMAN M M EI FEKY A A | 1999 | Anti-Corrosion methods and Materials1999,46,4: | 1 |
| 20 | Antidiabetic and antioxidant effects of hydroxytyrosol and oleuropein from olive leaves in alloxan-diabetic rats显示文摘 | Jemai H Feki AE Sayadi S | 2009 | J Agric Food Chem2009,57,19: | 1 |