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Mohamed, G. G., M. F. El-Shahat, A. M. Al-Sabagh, M. A. Migahed, and T. A. Ali, "Septonex", Analyst, 2011. Abstract
Frag, E. Y. Z., G. G. Mohamed, and M. H. Gaber, "Sensitive extractive spectrophotometric method for the determination of some statin drugs in pharmaceutical preparations", Insight Pharmaceutical Sciences, vol. 1, issue 4, 2011. AbstractCU-PDF.pdf

Background: The statins (or HMG-CoA reductase inhibitors) formed a class of hypolipidemic drugs used to lower cholesterol levels in people with or at risk of cardiovascular disease. They lower cholesterol by inhibiting the enzyme HMG-CoA reductase, which is the rate-limiting enzyme of the mevalonate pathway of chloestrol synethesis. The context and purpose: Simple, sensitive and rapid extractive spectrophotometric method has been developed for the assay of statin drugs, simvastatin, pravastatin sodium and atorvastatin calcium, in pure form and in tablets. The method involves the formation of coloured ion-pairs between the drugs and the Mo(V)-thiocyanate

Khader, S. N. H. M. M., "Semi Exact Solutions for Bi-Harmonic EquationsUsing Homotopy Analysis Method", World Applied Sciences Journal, 2011. Abstract

In this article, the homotopy analysis method (HAM) for obtaining semi analytical solutions of biharmonicequations is introduced. Series solutions of the problem under consideration are developed by meansof HAM and the recurrence relations are given explicitly. The initial approximation can be freely chosen withpossible unknown constants which can be determined by imposing the boundary and initial conditions. Thenumerical examples show the rapid convergence of the series constructed by this method to the exact solution.Moreover, this technique does not require any discretization, linearization or small perturbations. Test problemshave been considered to ensure that HAM is accurate and efficient compared with the variational iterationmethod (VIM).

Hegazi, E. M., M. A. Konstantopoulou, A. Herz, W. E. Khafagi, E. Agamy, S. Showiel, A. Atwa, G. A. M. El-Aziz, and S. M. Abdel-Rahman, "Seasonality in the Occurrence of Two Lepidopterous Olive Pests in Egypt", Journal Insect. Science, 2011.
Emara, K. S., and E. A. Shalaby, "Seasonal Variation of Fixed and Volatile Oil Percentage of Four Eucalyptus Spp", African Journal of Plant Science, vol. 5, issue 6, pp. 353-359, 2011. AbstractCU-PDF.pdf

This experiment was conducted during the four seasons: Spring, summer, autumn and winter of two successive annual cycles; 2008/2009 and 2009/2010 (starting from May 2008). Four Eucalyptus species were under investigation; Eucalyptus camaldulensis Dehnh., Eucalyptus cinerea F. Muell. ex Bentham, Eucalyptus citriodora Hook. and Eucalyptus globulus Labill. Seasonal variations in the amount of fixed and volatile oils in Eucalyptus spp. matured leaves were investigated.

Chatrchyan, S., and et al, "Search for Supersymmetry at the LHC in Events with Jets and Missing Transverse Energy", Physical Review Letters, 2011. AbstractCU-PDF.pdf

A search for three-jet hadronic resonance production in pp collisions at a center-of-mass energy of7 TeV has been conducted by the CMS Collaboration at the LHC, using a data sample corresponding to anintegrated luminosity of 35 pb_1. Events with high jet multiplicity and a large scalar sum of jet transversemomenta are analyzed using a signature-based approach. The number of expected standard modelbackground events is found to be in good agreement with the observed events. Limits on the crosssection times branching ratio are set in a model of gluino pair production with an R-parity-violating decayto three quarks, and the data rule out such particles within the mass range of 200 to 280 GeV=c2.

Osman, K. M., Z. M. S. Amin, M. A. K. Aly, and H. H. W. S. Soliman, "SDS-PAGE Heat Shock Proteins profiles of environmental Aeromonas strains", Polish Journal of Microbiology, 2011.
Hozzein, W. N., W. Rabie, and M. I. A.Ali, "Screening the Egyptian Desert Actinomycetes As Candidates for New Antimicrobial Compounds and Identification of A New Desert Streptomyces Strain", African Journal of Biotechology, 2011. Abstract

In a screening program to study the antimicrobial activities of desert actinomycetes as potential producers of active metabolites, 75 actinomycete strains were isolated from the Egyptian desert habitats , and tested. Out of the isolated 75 organisms, 32 (42.67%) showed activity against the used test organisms. The antimicrobial activities of the active desert actinomycete strains were classified into four groups according to their spectrum of activity on different groups of test organisms and it was found that 43.75% of the active isolates have activity against Gram-positive bacteria only, 28.13% have activity against both Gram-positive and Gram-negative bacteria, 15.63% have activity against Gram-positive bacteria and yeast, 12.50% have activity against Gram-positive, Gram-negative bacteria and yeast. The most potent actinomycete strain, designated D332, was selected for further studies including its identification and isolation of its active compound. Strain D332 was identified by studying its morphology, chemotaxonomy, biochemical characteristics and phylogenetic analysis of the 16S rRNA gene sequence. All phenotypic and genotypic characteristics were consistent with the classification of strain D332 to genus Streptomyces where it formed a distinct phyletic line in the Streptomyces 16S rRNA gene tree. On the other hand, the culture broth of strain D332 was extracted with ethyl acetate after fermentation for the production of the active compound then, the crude extract was partially purified by thin layer chromatography using a solvent system composed of heptane: ethyl acetate (3:2). The results revealed that strain D332 produced one major compound active against Gram-positive and Gram-negative bacteria and yeasts.

Ahmed, F. A., M. M. Rashed, N. S. A. M. Khalil, and M. A. A. M. Hashem, "The Scavenging Capacity And Synergistic Effect Vitamin C, Gallic Acid And Tannic Acid On Ccl4-Induced Acute Hepatic Injury In Experimental Rats", Advances in Food Sciences, 2011. Abstract

The biological activity of the natural antioxidant vitamin C can be enhanced by the presence of some other active natural antioxidants, such as gallic and tannic acid. Since many of these natural antioxidants are consumed together in foods, the potency for synergistic interactions is high in the human diet. In the current study, the hepatoprotective activity of the natural antioxidants against CCl4- induced acute hepatic injury by using rats (male albino) was investigated.

Ahmed, F. A., M. M. Rashed, N. S. A. M. Khalil, and M. A. A. M. Hashem, "The Scavenging Capacity and Synergistic Effect Of Some Natural Antioxidants Mixtures On The Dpph? Free Radical", Advances in Food Sciences, 2011. Abstract

The biological activity of the natural antioxidant vitamin C can be enhanced by the presence of some other active natural antioxidants, such as gallic and tannic acid. Since many of these natural antioxidants are consumed sometimes together in foods, the potency for synergistic interactions is high in the human diet.

Hilali, M., M. El-seify, A. Zayed, A. El-morsey, and J. P. Dubey, "Sarcocystis dubeyi (Huong and Uggla, 1999) Infection in Water Buffaloes (Bubalus bubalis) from Egypt", J. Parasitol., 2011. Abstract

Water buffaloes (Bubalus bubalis) are intermediate hosts for 4 species of Sarcocystis, i.e., Sarcocystis fusiformis and Sarcocystis buffalonis with cats as definitive hosts; Sarcocystis levinei with dogs as definitive hosts; and Sarcocystis dubeyi with an unknown definitive host but thought to be zoonotic. Currently, the latter species has been identified with certainty only from Vietnam. In the present study, sarcocysts of S. dubeyi are reported in 11 (30%) of 35 Egyptian water buffaloes from which the esophageal muscles were examined histologically. Sarcocysts were microscopic, measuring 180-250 X 70-110 urn in size. Ultrastructurally, the sarcocyst wall was 3.5-6.5 urn thick and had palisade-like villar protrusions which give it a striated appearance. The villar protrusions contained micro tubules that were distributed along the whole villus. This is the first report of S. dubeyi from water buffaloes in Egypt.

Dardir, H. A., N. A. Aba-Alkhail, and A. A. A. Abdel-All, "Safety Evaluation of Enterococcal Strains Isolated from DairyProducts and Clinical Samples using RT-PCR", World Journal of Dairy & Food Sciences 6 (2): 234-240(2011), 2011. Abstract

Enterococci are part of the dominant microbiota of several dairy products, which can be used in thedairy industry as starter or probiotic cultures. However, they are also implicated in severe multi-resistantnosocomial human infections. In this study, phenotypic tests using API 20 S strip were used for speciesidentification of 60 and 55 enterococcal strains isolated from dairy products and clinical samples, respectively.

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.