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El-Rahman, A. H. A., S. A. Salih, and A. A. Mokhtar, "Role of Phosphoric Acid on the Corrosion Performance of Pb-1", Afinidad, 2011. Abstract

The corrosion behavior of a commercial Pb-1.7%Sb grid of lead-acid batteries under open circuit conditions in 5 M H2SO4 in the presence of phosphoric acid is studied by electrochemical impedance spectroscopy and cyclic voltammetry. Dependence of corrodibility of the alloy on H3PO4 concentration is weak up to 0.7M. After days of corrosion, the corrosion rate in the presence of H3PO4 is slightly higher than in its absence, due to retardation of the growth of an insulating PbSO4 layer that acts as an effective diffusion barrier of the corrosive species. The electronic and diffusion properties of the passive layer formed in the presence of H3PO4 are substantially inferior. Cyclic voltammetry indicates a decrease in amounts of PbSO4 and Sb2O3 formed in the presence of H3PO4 and with increasing its concentration. Also, the amount of PbO formed beneath the PbSO4 layer increases with increasing H3PO4 concentration on the expense of the amount of PbSO4.

Habib, D. F., A. A. Fahmi, N. M. Kholousy, A. I. Amin, M. Shalaby, M. M. Ahmed, and A. A. M. Shanab, "The Role of Liver in Leptin Metabolism in Experimental Nephrotic Syndrome", Excli Journal, 2011. Abstract

Leptin is a hormone influencing food intake, energy expenditure and body weight. It is pro-duced by adipocytes, exerts its effects on brain, endocrine pancreas and other organs by acti-vating trans-membrane receptors and is cleared from plasma mainly by the kidneys. Several studies have suggested that leptin's effects on metabolism are mediated by the liver.

HA, M., A. E. - A. AA, S. N, R. N., and A. RA, Role of HFE gene mutations on developing iron overload in beta-thalassaemia carriers in Egypt., , vol. 17, issue 6, 2011. Abstractcu_pdf.pdf

A case-control study aimed to determine the prevalence of C282Y, H63D and S65C mutations of the HFE gene in beta-thalassaemia carriers and investigate their influence on iron absorption. A total of 41 beta-thalassaemia carriers and 40 control subjects without haemoglobinopathies were screened for the C282Y, H63D and S65C mutations by polymerase chain reaction-restriction fragment-length polymorphism. The iron status in these subjects was studied and correlated with the HFE gene mutations. H63D, S65C and C282Y allele frequencies were 30.5%, 13.4% and 7.3% respectively in beta-thalassaemia carriers and 10.0%, 2.5% and 0.0% respectively in the control group. Compound heterozygosis was found in 10 carriers (24.4%). The transferrin saturation level was high in compound heterozygote cases. Our study has shown that the HFEgene mutations are common in Egypt among beta-thalassaemia carriers compared with normal controls.

Abdelhalim, M. A. K., M. M. Mady, and M. M. Ghannam, "Rheological and Dielectric Properties of Different Gold Nanoparticle Sizes", Lipids in Health and Disease, 2011. AbstractCU_PDF.pdf

Gold nanoparticles (GNPs) have found themselves useful for diagnostic, drug delivery and biomedicine applications, but one of the important concerns is about their safety in clinical applications. Nanoparticle size has been shown to be an extremely important parameter affecting the nanoparticle uptake and cellular internalization.
The rheological properties assume to be very important as it affects the pressure drop and hence the pumping power when nano-fluids are circulated in a closed loop. The rheological and dielectric properties have not been documented and identified before. The aim of the present study was to investigate the rheology and the dielectric properties of different GNPs sizes in aqueous solution.
Methods: 10, 20 and 50 nm GNPs (Product MKN-Au, CANADA) was used in this study. The rheological parameters were viscosity, torque, shear stress, shear rate, plastic viscosity, yield stress, consistency index, and activation energy. These rheological parameters were measured using Brookfield LVDV-III Programmable rheometer supplied with temperature bath and controlled by a computer.
The shear stress and shear rate of GNPs have shown a linear relationship and GNPs exhibited Newtonian behaviour. The GNPs with larger particle size (50 nm) exhibited more viscosity than those with smaller particle sizes (10 and 20 nm). Viscosity decreased with increasing the temperature for all the examined GNP sizes. The flow behaviour index (n) values were nearly ≤ 1 for all examined GNP sizes.
Dielectric data indicated that the GNPs have strong dielectric dispersion in the frequency range of 20-100 kHz. The conductivity and relaxation time decreased with increasing the GNP size. This study indicates that the GNP size has considerable influence on the viscosity of GNPs. The strong dielectric dispersion was GNP size dependent.
The decrease in relaxation time might be attributed to increase in the localized charges distribution within the medium confirmed by the conductivity data. This study suggests that further experiments are required to be done after the administration of GNPs through different routes in rats in vivo.
Keywords: Gold nanoparticles; Rheological parameters; Size; Temperature; Dielectric; Conductivity.

Al-Abd, A. M., A. M. Mahmoud, G. A. El-Sherbiny, M. A. El-Moselhy, S. M. Nofal, H. A. El-Latif, W. I. El-Eraky, and H. A. El-Shemy, "Resveratrol Enhances the Cytotoxic Profile of Docetaxel and Doxorubicin in Solid Tumour Cell Lines in Vitro", Cell Proliferation, 2011.
MotiorRahman, M., A. A. Soaud, F. A. H. Darwish, and M. Sofian-Azirun, "Responses of Sulfur, Nitrogen and Irrigation Water on Zea Mays Growth and Nutrients Uptake", AJCS, 2011. Abstract

Availability of both native and applied nutrients is one of the major constrains for plants growth in sandy calcareous soils. Elementalsulfur (S0) is often applied to acidify calcareous soil which increases the availability of nutrients in soils. The present study was sought toexamine the effect of S0 combined with or without N under acidified (pH 6.5) and normal (pH >7.5) irrigation water on growth, apparentN-use efficiency (NUE) and uptake availability of nitrogen (N), phosphorus (P), sulfur (S), iron (Fe), zinc (Zn) and manganese (Mn) by

Shanan, N. T. A., and A. S. Soliman, "Response of Snapdragon Plants to Pinching and Growth Retardants Treatments", American-Eurasian Journal of Sustainable Agriculture, vol. 5, issue 2, pp. 150-157, 2011. CU-PDF
A.M., H., R. E. M. Khateeb, H. A. Amer, S. K. A. Abou-El-Dobal2, K. E. H. Shahat, and S. W., "Response of Fasciola Free and Infected Buffaloes to CIDR Ovsynch Treatment During Summer Season with Emphasis on Sex Hormone and Biochemical Changes", J. American Science, 2011. Abstract

Improvement of buffalo fertility during summer season was our goal. One hundred and sixty three buffalo-cows were examined for parasitic infection using coprological and serological methods. All animals were subjected to gynecological examination, through rectal palpation and using ultra sonic examination to detect the ovarian and genital tract condition. Thirty one non-pregnant buffalo-cows (18 healthy and 13 infected) were selected for treatment with CIDR OvSynch protocol. Blood samples were collected from animals before, during and after treatments. Serum samples were assayed for estradiol and progesterone using RIA technique. GPT,GOT, ALP, total and direct bilirubin, T. protein and glucose were measured . The percentage of infected buffaloes in the herd was 25.77% (42/163 animal), the prevalence of Fasciola Spp. infection among buffaloes was 6.75%. In Fasciola infected buffaloes, estradiol levels were decreased and progesterone concentration was increased significantly (p<0.05). Treatment with CIDR OvSynch protocol, elevated significantly both estradiol and progesterone levels in infected animals than healthy one, elevated direct bilirubin and total protein and decreased significantly ALP and glucose in infected animals. CIDR OvSynch regimen increased the pregnancy rate in both healthy (55.6%) and infected (30.8%) buffaloes. It is concluded that infection with Fasciola had adverse effects on some sex hormone and liver enzymes imbalance and animal fertility represented in decreasing response to synchronizing agents and lowering pregnancy rate.Treatment with CIDR OvSynch protocol improved buffalo fertility and resumed ovarian activity of buffaloes during summer season.

Khalil, A. A. I., M. A. Gondal, and N. Al-Suliman, "Resonant Photo-Acoustic Detection of Carbon Monoxide with Uv Laser at 213 Nm", Appl Phys B-Lasers O, 2011. Abstract

A trace-gas sensor for carbon monoxide based on Pulsed Laser-Induced Photo-Acoustic Spectrod for the first time. PLIPAS-based sensor with different cell geometry was employed to enhance the sensitivity down to 58 ppbV level. The parametric dependence of the PLIPAS signals on CO gas concentration, buffer gas (Ar, O2 and He) concentration, laser pulse energy was studied and Ar proved to be better than O2 and He in terms of enhancing the sensitivity of the systemscopy (PLIPAS) in conjunction with laser excitation wavelength of 213 nm was designed, fabricated and teste. The signal-to-noise ratio and limit of detection have been quantified for different experimental conditions. This study proves that PLIPAS-based CO gas sensor is a reliable gas-leak detection system with high sensitivity and selectivity. Hence this sensor can be employed for pollution monitoring and detection of CO in a noisy environment.

Abo-EL-Sooud, K., M. M. Hashem, A. Ramadan, A. A. M. El-Aty, K. Y. Awadallaha, and A. Q. Gab-Allaha, "Research Strategies for Treatment of Nanobacteria", Insight Nanotechnology, 2011. Abstract

Background: Modern medicine strives to get an efficient treatment for Nanobacteria (NB) as it highly treatment-resistant, persisters, dormant forms and biofilms containing hydroxyl apatite or carbonate.

Osman, A., "Renormalized three-body Equations with Short-range Forces", Canadian Journal of Physics, 2011.
Orabi, M., "Removing the Forbidden States in a 4-alpha System", Few-Body Syst, 2011.
W.O.Younis, and S.H.Allam, "Relativistic Energy Levels and Transition Probabilities for the Al-Like Ions (Z = 33- 35)", International Review of Physics, 2011.
Hafez, Y., "Relationship Between Geopotential Height Anomalies Over NorthAmerica and Europe and the USA Landfall Atlantic Hurricanes Activity", Journal of American Science, 2011. Abstract

The present paper investigates the relationship between geopotential height anomalies at level of 500 hpa over North America and Europe, and the USA landfall Atlantic hurricanes activity. The decadal data of the number of hurricanes by category which stroked the mainland USA for each decade through the period (1851-2006) are used through the present study. The daily NCEP/NCAR reanalysis data composites for geopotential height at 500 hpa level over North America and Europe for the period of (1949-2006) are used too. Hurricane datasets and anomalies in geopotential height are analyzed and correlated together. The results revealed that there are significant positive correlations between the anomalies in geopotential height over North America and East Europe simultaneously, and existence of Atlantic hurricanes of category 3 that strike USA. In addition to that, significant positive correlations between the anomalies in geopotential height over North America and existence of major hurricanes (category 3, 4 and5) that landfall USA is found too. However, significant negative correlations between the anomalies in geopotential height over North Atlantic and existence of all USA Landfall Atlantic Hurricane categories are existed else category 1. In general one can conclude that anomalies in geopotential height at 500 hpa level over North America and Europe are control the USA landfall Atlantic hurricanes activity.[Yehia Hafez. Relationship Between Geopotential Height Anomalies Over North America and Europe and The USA Landfall Atlantic Hurricanes Activity.

Hassaneen, H. M., and O. M. N. A. M. Abunada, "Regioselectivity of Nitrilimines 1,3-Dipolar Cycloaddition: Novel Synthesis of Spiro[4,4]nona-2,8-dien-6-one Derivatives", Heteroatom Chem, 2011. Abstract

Regioselective 1,3-dipolar cycloaddition of nitrilimines (generated in situ from dehydrohalogenation of the corresponding hydrazonoyl halides by the action of triethylamine) with 4-arylidene-1-aryl-2-phenyl-1H-imidazol-5(4H)-one 3 afforded the corresponding spiro[4,4]nona-2,8-dien-6-one 4. The reaction was carried out in dry benzene under reflux temperature. Refluxing in acetic acid, 4a was converted to its respective N-phenylpyrazole-5-carboxamide 8. The structures of prepared compounds were established by elemental analyses and spectral data (IR, MS, 1H, and 13C NMR).

Gabera, H. M., and T. A.?M. Moussa, "Regioselective Synthesis And Antimicrobial Studies Of Novel Bridgehead Nitrogen Heterocycles Containing The Thienopyrimidinone Skeleton", European Journal of Chemistry, 2011. Abstract

Versatile 2?(alkylthio)pyrimidine?type and 2?(phenacylamino) thiophene building blocks (4ad) and 16 were obtained based on an ortho functionalized thiophene derivative 1.

Khalil, M. H., "Reconnaissance of Freshwater Conditions in a Coastal Aquifer: Synthesis of 1D Geoelectric Resistivity Inversion and Geohydrological Analysis", Near Surface Geophysics, 2012. Abstract

Despite the saltwater intrusion of the Gulf of Suez, a Quaternary alluvial aquifer constitutes the main source of freshwater in the coastal city of El-Tor, the administrative capital of South Sinai, Egypt.

Afify, A. E. - M. M. R., "Recent Techniques Applied for Pesticides Identification and Determination in Natural Products and Its Impact to Human Health Risk", Edi Pesticides in the Modern World-Trends in Pesticides Analysis, 2011. Abstract

-2011

Dawood, K. M., N. M. Elwan, and B. F. Abdel-Wahab, "Recent Advances on the Synthesis of Azoles, Azines and Azepinesfused to Benzimidazole", Arkivoc, 2011. Abstract

The current review article represents a survey covering the literatures on azoles, azines and azepines fused to the a face of a benzimidazole moiety since 1980. Synthetic routes leading to benzimidazole fused with different ring systems; five-, six-, and seven-membered heterocyclic rings, containing one-, two- and three-heteroatoms were reported utilizing simple reactive benzimidazole synthons.

Al-Mousawi, S. M., M. S. Moustafa, I. A. Abdelhamid, and M. H. Elnagdi, "Reassignment of the Structures of Condensation Products of a-keto ? Formylarylhydrazones with Ethyl Cyanoacetate: a Novel Route to Ethyl 5-arylazo-2-hydroxynicotinates", Tetrahedron Letters, 2011. Abstract

The condensation of a-keto ?-formylarylhydrazones with ethyl cyanoacetate afforded ethyl 5-arylazo-2- hydroxy-6-aryl (or alkyl) nicotinates. The structures of the reaction products could be established based on X-ray crystal structure determination.

Hassaneen, H. M., and H. H. Z. A. M. E. Gomaa, "Reactivity of 3-Cyanoacetylindole Derivatives: Synthesis of 3-Hydrazonopyrazolyl and 3-Thiadiazolyl Indole Derivatives", International Journal of Organic Chemistry, 2011. Abstract

The coupling reaction of 3-cyanoacetyl-2-methylindole 1a with the aromatic diazonium salts gave the corresponding arylhydrazones 2a-e. Compounds 2 were used for synthesis of 4-aminopyrazole-5-carbonitrile 4a-e and 5-amino-4-arylazo-3-pyrazoles 5a-e derivatives. Also, treatment of 3-cyanoacetyl-2-phenylindole 1b with phenyl isothiocyanate gave the corresponding thioacetanilide 7. The later compound 7 was utilized as the key intermediate for the synthesis of some new thiadiazole derivatives 9a-r. The structures of all new compounds were elucidated on the basis of elemental analysis and spectral data.

Hassaneen, H. M., and H. M. E. H. Y. S. Mohammed, "Reactivity of 1-methylisoquinoline synthesis of pyrazolyl triazoloisoquinoline and thiadiazolyl isoquinoline derivatives", Natural Science, 2011. Abstract

The reaction of 1-methylisoquinoline 1 with hydrazonoyl halides 2 in ethanol in the presence of chitosan under microwave irradiation affords triazoloisoquinoline 4. Product 4 reacts with dimethylformamide-dimethylacetal to give enaminones 7 which react with hydrazonoyl halides to give pyrazolyl triazoloisoquinoline 13. Also, 1-methylisoquinoline 1 reacts with arylisothiocyanate to give thioanilide 15 which reacts with hydrazonoyl halides to give the corresponding thiadiazolyl isoquinoline derivatives 20, 24.

Abdou, S. E., S. M. El-Qusy, S. S. Ghabrial, and M. I. Haggag, "Reactions with Visnaginone: Synthesis, Cyclisation and Microbial Evaluation of Some Visnaginone Thiosemicarbazone Derivatives", Modern Applied Science, 2011. Abstract

Several new visnaginone ethers were prepared and their thiosemicarbazone derivatives are synthesized. The behavior of the thiosemicarbazones in methanolic sodium methoxide and hydrochloric acid is discussed. Structures were established on the bases of elemental and spectral data studies. Some of the thiosemicarbazones were tested for their antimicrobial activity. The structures of the synthesized derivatives (5a-g,6a-g) were confirmed by means of IR, 1H NMR, MS and elemental analyses. The synthesized derivatives (5a-g,6a-g) were subjected to the Microbiology Division, Microanalytical Center, Cairo University, (5a-g,6a-g) showed a variable degree of antimicrobial activity.

Abdelhamid, A. O., A. A. Fahmi, and A. B. Ali, "Reactions with hydrazonoyl halides 66: Synthesis of some new thiadiazoles, triazolino[4,3-a]pyrimidines and pyridazines containing coumarin moiety", European Journal of Chemistry, 2011. Abstract

2,3?Dihydro?1,3,4?thiadiazoles, triazolino[4,3?a]pyrimidines, isoxazoles and isoxazolo[3,4? d]pyridazines containing coumarin moities were synthesized from the reactions of methyl(or benzyl) carbodithioate, pyrimidine?2?thione and 3?(3?(dimethylamino)acryloyl)?2H?chromen?2?one derivatives with C?coumarinoyl?N?phenylhydrazonoyl bromide. The structures of all the newly synthesized compounds were confirmed by elemental analyses and spectral data.

Mohareb, R. M., and R. A. Ibrahim, "Reaction Of Phenylhydrazo Ethylacetoacetate With Cyanoacetyl Hydrazine: Novel Synthesis Of Pyridazine And Pyrazole Derivatives And Their Anti-Tumor Evaluations", Internatioal Journal of Applied Biology and Pharm. Technology, 2011. Abstract

The reaction of phenylhydrazoethyl acetoacetate (1) with cyanoacetyl hydrazine (2) in an oil bath in the presence of ammonium acetate gave the pyridazine derivative 4. However, carrying the same reaction but in ethanolic/Et3N gave the pyrazole derivative 5. Compounds 4 and 5 were used in a series of heterocyclization reactions to afford products that showed anti-tumor activities towards three cell lines namely, breast adenocarcinoma (MCF-7), non-small cell lung cancer (NCI-H460) and CNS cancer (SF-268).

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