Publications

Export 641 results:
Sort by: Author Title Type [ Year  (Desc)]
2011
Eleiwa, M. E., S. O. Bafeel, and S. A. Ibrahim, "Influence of Brassinosteroids on Wheat Plant (Triticum aestivum L", Australian Journal of Basic and Applied Sciences, 2011. Abstract

Green house experiment was conducted to alleviate the effect of irrigating saline water at (0.2000, 4000 and 6000 ppm NaCl solution) by using foliar spray of BRs "28-homoBL" at levels of 50, 100 and 200 mg/L on wheat plant (triticum aestivum L.). Brassinosteroids play an important role in growth, metabolic activities and productivity of wheat plants. BRs significantly increase all the growth parameters, photosynthetic pigments as compared with the untreated control plant. Foliar application of BRs also increased yield and yield attributes of treated plants and significantly overcome the depressive effect of saline irrigation water at all levels on crop productivity and photosynthetic pigments.

Heakal, E. - T. F., N. S. Tantawy, and O. S. Shehata, "Influence of chloride ion concentration on the corrosion behavior of Al-bearing TRIP steels", Materials Chemistry and Physics, 2011. Abstract
n/a
Shehata, S. A. Gharib, A. A., M. M. El-Mogy, A. Gawad, K. F., and E. A. Shalaby, "Influence of Compost, Amino and Humic Acids on the Growth, Yield and Chemical Parameters of Strawberries", Journal of Medicinal Plants Research, 2011. Abstract

There is increasing concern about human health and environmental contamination risks associated with the extensive use of mineral fertilizer in vegetables production. Compost and growth stimulate agents could be a suitable alternative to mineral fertilizer. The effect of soil addition of compost and foliar fertilizers with humic and/or amino acids on growth and yield of strawberry (Fragaria x ananassa) cv. festival plants was investigated. Compost fertilization of soil at a rate of 8 ton/fed, foliar application of humic acid at a rate of 1 g l-1, foliar fertilization of amino acids at a rate of 2 ml l-1 and their combinations were used. The results from this study showed that plants of strawberries grown from compost fertilized plots exhibited generally higher plant length and fruit weight. Total yield was significantly increased by all treatments compared to mineral fertilizer. Moreover, the compost fertilizer also produced fruits with higher level of total soluble solid and anthocyanin content. Limited effects on growth were observed by foliar fertilizer with either humic acid or amino acids.

A.S, M. A. M. R., F. A. H. Darwish, K. A. El-Tarabily, M. A. Awad, FaruqGolam, and M. Sofian-Azirun, "Influence of Elemental Sulfur on Nutrient Uptake, Yield and Quality of Cucumber Grown in Sandy Calcareous Soil", AJCS, 2011. Abstract

This study was carried out to investigate the effect of elemental sulfur (S0) and sulfur oxidizing bacteria (Paracoccusversutus) on nutrient uptake, yield and quality of cucumber grown in sandy calcareous soils. Both elemental sulfur powder (S0P) and pellets of sulfur powder-Tiger 90 (S0T) were applied at rates of 0, 1, 5 and 10 t/ha at Al Hamraneya. On the contrary, S0P was used at rates of 0, 1, 5 and 10 t/ha combined with or without Paracoccusversutus (Pv) at Al Kuwaitat, United Arab Emirates (UAE). Higher concentrations of N, P, S, Mn and Zn in leaves and yield of cucumber at both locations were obtained with application of S0 at rates of 5 and 10 t/ha. Total soluble sugar (TSS) content and vitamin C was higher with the application of S0 at rates of 5 and 10 t/ha. Application of Pv individually or with varying levels of S0P had no positive effect on nutrients uptake, yield and quality of cucumber. A positive correlation was observed between shelf life and vitamin C. At Al Hamraneya S0P performed better than S0T. The results reveal that application of S0P at the rate of 5 t/ha in sandy calcareous soils can enhance the nutrients uptake ability, increase yield and superior quality of cucumber at both locations in UAE.

Frikha, M., H. M. Safaa, M. P. Serrano, E. Jim, R. Lazaro, and G. G. Mateos, "Influence of the Main Cereal In the Diet and Particle Size of the Cereal on Productive Performance and Digestive Traits of Brown-Egg Laying Pullets", Animal Feed Science and Technology, 2011. Abstract

A total of 864 brown-egg laying pullets was used to study the effects of the main cereal of the diet (500 g maize or wheat/kg) and particle size of the cereal (hammer milled to pass through a 6-, 8-, and 10-mm screen) on growth performance and digestive traits from 1 to 120 d of age. Each of the six treatments was replicated six times (24 pullets per replicate). Type of cereal did not affect pullet performance at any age.From1 to 45 d of age, body weight (BW) gain was increased (P<0.001) and feed conversion ratio was improved (P<0.05) as the particle size of the cereal was reduced, but no effects were observed after this age. At 45 d of age, pullets fed maize tended (P<0.10) to have a heavier relative weight (RW, g/kg BW) of the total digestive tract and proventriculi and a higher relative length (RL, cm/kg BW) of the small intestines (SI) than pullets fed wheat. Also at this age, the RW of the digestive tract increased (P<0.05) with increases in the particle size of the cereal. At 120 d of age, dietary treatment did not affect the RW of any of the organs studied or gizzard pH but the RL of the SI was higher (P<0.05) for pullets fed wheat than for pullets fed maize. Also, the RL of the SI was reduced (P<0.05) as the particle size of the cereal increased. We conclude that 500 g wheat/kg can be included in pullet feeds from 1 to 120 d of age, and that particle size of the cereal affects pullet performance during the first 45 d of life but not thereafter. Therefore, it is recommended to grind the cereal used in this period with a screen size of no more than 8mm.

Victor, B. C., A. Anbalagan, M. M. Mohamed, B. F. Sloane, and D. Cavallo-Medved, "Inhibition of cathepsin B activity attenuates extracellular matrix degradation and inflammatory breast cancer invasion", Breast Cancer Research, 2011. Abstract

Introduction: Inflammatory breast cancer (IBC) is an aggressive, metastatic and highly angiogenic form of locally advanced breast cancer with a relatively poor three-year survival rate. Breast cancer invasion has been linked to proteolytic activity at the tumor cell surface. Here we explored a role for active cathepsin B on the cell surface in the invasiveness of IBC.

Heakal, E. - T. F., A. S. Fouda, and M. S. Radwan, "Inhibitive effect of some thiadiazole derivatives on C-steel corrosion in neutral sodium chloride solution", Materials Chemistry and Physics, 2011. Abstract
n/a
Dakrory, A. I., "Innervation of the Olfactory Apparatus of Varanus Niloticus (Squamata", Journal of American Science, 2011. Abstract

The olfactory apparatus of Varanus niloticus niloticus includes the main olfactory organ and the vomeronasal organ or organ of Jacobson. The vomeronasal organ is innervated by two associated nerves: the terminal and the vomeronasal nerves. They arise from the sensory epithelium in combination. The terminal nerve carries a terminal ganglion. The nervi terminalis and vomeronasalis combine together as one separate nerve which leaves the cavity of the nasal capsule together with three bundles of the olfactory nerve through the fenestra olfactoria advehens.

Doha, E. H., A. H. Bhrawy, and M. A. Saker, "Integrals of Bernstein Polynomials: an Application for the Solution Ofhigh Even-Order Differential Equations", Applied Mathematics Letters, 2011.
Mady, M. M., and W. M. Elshemey, "Interaction of Dipalmitoyl Phosphatidylcholine (DPPC) Liposomes and Insulin", Molecular Physics, 2011. Abstract

Insulin, a peptide that has been used for decades in the treatment of diabetes, has well-defined properties and delivery requirements. Liposomes, which are lipid bilayer vesicles, have gained increasing attention as drug carriers which reduce the toxicity and increase the pharmacological activity of various drugs. The molecular interaction between (uncharged lipid) dipalmitoyl phosphatidylcholine (DPPC) liposomes and insulin has been characterized by using Fourier transform infrared spectroscopy (FTIR) and X-ray diffraction. The characteristic protein absorption band peaks, Amide I (at about 1660 cm-1) and Amide II band (at about 1546 cm_1) are potentially reduced in the liposome insulin complex. Wide-angle x-ray scattering measurements showed that the association of insulin with DPPC lipid of liposomes still maintains the characteristic DPPC diffraction peaks with almost no change in relative intensities or change in peak positions. The absence of any shift in protein peak positions after insulin being associated with DPPC liposomes indicates that insulin is successfully forming complex with DPPC liposomes with possibly no pronounced alterations in the structure of insulin molecule.

Mady, M. M., W. A. Mohammed, N. M. El-Guendy, and A. A. Elsayed, "Interaction of DNA and Polyethylenimine: FTIR and DSC Studies", International Journal Physical Sciences, 2011. Abstract
n/a
Mady, M. M., W. A. Mohammed, N. M. El-Guendy, and A. A. Elsayed, "Interaction of DNA and Polyethylenimine: FTIR and DSC Studies", International Journal Physical Sciences, 2011.
Galal, A., N. F. Atta, and S. M. Ali, "Investigation of the Catalytic Activity of LaBO3 (B = Ni, Co, Fe or Mn) prepared by the microwave-assisted Method for Hydrogen Evolution in Acidic Medium", Electrochim. Acta, 2011. Abstract

LaBO3 (B = Ni, Co, Fe and Mn) were prepared by microwave-assisted citrate method. The electrocatalytic activity toward hydrogen evolution reaction (HER) was investigated. XRD characterization showed that pure perovskite crystals were indeed formed. SEM images showed that changing the type of the B-site metal ion affected the morphology of the prepared perovskites.

Geweely, N.S., Ouf, and S.A., "Investigation of the Optimum Condition and Antimicrobial Activities of Pigments from Four Potent Pigment-Producing Fungal Species", Journal of Life Sciences, 2011. Abstract

{Soil samples were collected from three sites (Wadi-El-Natrun, Kafr-El-Sheekh and Mallahat Road) located in Cairo-AlexandriaAgriculture Road, Egypt. The total fungal counts allover the road was 755 colonies, constituting ten fungal species (Alternariaalternata, Aspergillusflavus, Aspergillusnidulans, Aspergillusniger, Aspergillusterreus, Fusariummoniliforme, Penicilliumchrysogenum, Penicill-iumpurpurogenum, Phomaherbarum and Rhizopusoryzae). The most potent fungal species producing pigmentsalong the road were A. nidulans, F. moniliforme, P. purpurogenum and P. herbarum. Comparative sensitivity to different light wavelengths and radiation (laser, gamma and ultraviolet rays) on growth and pigment production in the four selected fungal species wasestimated. Optimization of physical and nutritional factors on growth and pigment production was carried out. A steady increase in theantioxidant activities was showed in all four tested pigments producing species with raising the phenol contents. The extracellularpigment of P. purpurogenum was found to be more effective against some pathogenic microbes and might have a potential role inpharmaceutical drug industry. The identification of the structure of unknown P. purpurogenum pigment was detected using UV andFTIR spectra, and indicated that it is an phenolic compound and has broad stretching OH

Heakal, E. - T. F., O. S. Shehata, N. S. Tantawy, and A. M. Fekry, "Investigation on the Corrosion and Hydrogen Evolution for AZ91D Magnesium Alloy in Single and Anion-Containing Oxalate Solutions", International Journal of Hydrogen Energy, 2011. Abstract

Corrosion characterization of AZ91D alloy was studied in aqueous sodium oxalate solutions with various concentrations using different electrochemical techniques (open circuit potential, electrochemical impedance spectroscopy (EIS) and cyclic voltammetry (CV)). The corrosion rate and consequently the rate and extent of hydrogen evolution were found to increase significantly with increasing oxalate anion concentration and temperature or with decreasing the pH of solution. Increasing additions of various anions over the lower concentration range (0.001-1.0 mM) in the blank oxalate solution increases to a varying extent the corrosion rate of the alloy and hence increases the hydrogen evolution rate and decreases surface film stability in the following order Cl- > SO_4^(2-) > F-. On the other hand, addition of phosphate anion exhibits a reverse trend, where the active corrosion rate decreases with increasing PO_4^(3-) anion concentration, implying that this anion acts as a passivator for AZ91D alloy. The obtained electrochemical results are further confirmed by scanning electron microscopy (SEM) analysis.

Hussiena, E. M., F. M. Abdel-Gawad, and Y. M. Issa, "Ion-selective electrodes for determination of fluoxetine in capsules and inbiological fluids", Biochemical Engineering Journal, 2011.
El-Kabbany, F., S. Taha, and M. Hafez, "IR Spectroscopic Analysis of Polymorphism In C13H14N4O", Spectrochimica Acta Part A; 78: 981- 988 (2011), 2011. Abstract
n/a
Abdel-moein, K. A., and A. Samir, "Isolation of Enterotoxigenic Staphylococcus aureus from Pet Dogs and Cats: A Public Health Implication", Vector borne and Zoonotic Disease, 2011. Abstract

Staphylococcus aureus is a globally distributed bacterium causing wide variety of illnesses in humans, which attributed to its ability to produce wide array of virulence factors, including enterotoxins that are responsible for staphylococcal food poisoning outbreaks. The current study was carried out to investigate the prevalence of enterotoxigenic S. aureus among pet dogs and cats and its public health implication. For this purpose, nasal, oral, and wound swabs were collected from 70 dogs and 47 cats, whereas nasal swabs were collected from 26 human contacts.

Abo-EL-Sooud, K., M. M. Hashem, A. Ramadan, and A. Q. Gab-Allaha, "Isolation of Nanobacteria from Egyptian Patients with Urolithiasis", Insight Nanotechnology, 2011. Abstract

Background: Recent evidence suggests a role for nanobacteria in a number of human diseases, especially renal stone formation. It has become clear that the pathophysiology of renal stone disease cannot be explained by crystallization processes alone.

Seif, W. M., M. Shalaby, and M. F. Alrakshy, "Isospin Asymmetry Dependence Spectroscopic Factorfor Heavy Nuclei", Phys. Rev., 2011. Abstract

Both the valence nucleons (holes) and the isospin asymmetry dependencies of the -cluster inside parents radioactive nuclei are the preformation probability of an investigated. The calculations are employed in the framework of the density-dependent cluster model of ?-decay process for the even-even spherical parents nuclei with protons number around the closed shell Z0= 82 and neutrons number around the closed shells Z0=82 and Z0=126. The microscopic ?-daughter nuclear interaction potential is calculated in the framework of the Hamiltonian energy density approach based on the SLy4 Skyrme-like effective interaction. Also, the calculations based on the realistic effective M3Y-Paris nucleon-nucleon, NN, force have been used to confirm the results. The calculations then proceed to find the assault frequency and the ? penetration probability within the WKB approximation. The half-lives of the different mentioned ? decays are then determined and have been used in turn to find the spectroscopic factor. We found that the spectroscopic factor increases with increasing the isospin asymmetry of the parent nuclei if they have valence protons and neutrons. When the parent nuclei have neutron or proton holes in addition to the valence protons or neutrons then the spectroscopic factor is found to decrease with increasing the isospin asymmetry. The obtained results show also that the deduced spectroscopic factors follow individual linear behaviors as a function of the multiplication of the valence protons (Np) and neutron (Nn) numbers. These linear dependencies are correlated with the closed shells core (Z0, N0 ). The same individual linear behaviors are obtained as a as a function of the multiplication of Np Nn and the isospin asymmetry parameter, Np Nn I. Moreover, the whole deduced spectroscopic factors are found to exhibit a nearly general linear trend with the function Np Nn/ (Z0+N0).

Saad, G. R., and A. S. F. Eldin, "Isothermal Cure Kinetics of Uncatalyzed and Catalyzed Diglycidyl Ether of Bisphenol-A/Carboxylated Polyester Hybrid Powder Coating", J Therm Anal Calorim, 2011. Abstract

The thermal cure behavior of diglycidyl ether bisphenol-A/carboxylated polyester hybrid powder coating system (DGEBA/CPE) in absence and presence of catalyst was monitored using differential scanning calorimetry (DSC). Curing temperatures were between 160 and 200oC. The experimental results showed an autocatalytic behavior of the reaction, which could be described by the model proposed by Kamal. This model includes two rate constants k1 and k2 and two reaction orders m and n.

Doha, E. H., A. H. Bhrawy, and R. M. Hafez, "A Jacobi Dual-Petrov-Galerkin Method for Solving Some Odd-Order Ordinary Differential Equations", Abstract and Applied Analysis, 2011.
Folco, L., D. M. Martino, E. A. Barkooky, M. D'Orazio, A. Lethy, S. Urbini, I. Nicolosi, M. Hafez, C.Cordier, M. van Ginneken, et al., "Kamil Crater (Egypt): Ground truth for small-scale meteorite impacts on Earth", Geology, 2011.
Tourism