Kamel M.M.,Suez Canal University |
Rashwan S.M.,Suez Canal University |
El-Enany G.,PortSaid University |
Bayoumy A.A.,KAPCI Company for Coatings
Metall | Year: 2015
Zn - Ni alloys have been electrodeposited from a non - cyanide alkaline bath containing lactic acid as a complexing agent. The influence of bath composition, current density and temperature on cathodic polarization, cathodic current efficiency and alloy composition was studied. Different proportions of the two metals were obtained by using different deposition parameters, but at all [Zn2+]/[Ni2+] ratios studied, preferential deposition of Ni occurred and regular co-deposition took place. At high current densities, the deposition changed from regular to anomalous type. The Zn content of the deposit increased with increasing Zn2+ content, lactic acid and current density and decreased with temperature. The surface morphology of the deposited Zn - Ni alloy was investigated using SEM. The crystal structure was examined using X - ray diffraction technique. The results revealed that the alloys consisted of the y phase (Ni5Zn21) with body centered cubic structure. The crystallite size lies in the range of 15 to 30 nm for as-plated alloys.
Elfeil W.K.,Jilin University |
Elfeil W.K.,Suez Canal University |
Abouelmaatti R.R.,Jilin University |
Abouelmaatti R.R.,Key Laboratory of Animal Epidemiology and Zoonosis |
And 12 more authors.
Journal of Animal and Veterinary Advances | Year: 2012
Toll like receptor mediate immune response through recognition of Pathogen-Associated Molecular Patterns (PAMPs) thus play important roles in host defense. Little is known about the Avian Immune System structure and the majority of it based on chicken as a Universal Avian Model while recent researches showed that a lot of factor not common between chicken and other birds. This research aimed to identify and clone the duck TLR4 as a model to Anseriformes species, researchers success to clone a novel functional dTLR4 mRNA and deposit into the NCBI GenBank database where the mRNA consist of 2529 nucleotide and it showed 81 % identity with chicken and 78% identity with zebra finch while showed 95% identity with goose. The translated amino acid showed that the gene consist of 843 amino acid and the transmembrane structure analysis reveal a novel unique LRR motifs in duck and absent in both chicken and zebra finch at the position 56-80 also showed that TIR domain consist of 146 amino acid not 145 like chicken and zebra finch. © 2012 Medwell Journals.
Selim M.,Iowa State University |
Selim M.,Suez Canal University |
Kamal A.,Iowa State University |
Elsayed K.,Cairo University |
And 2 more authors.
IEEE International Conference on Communications | Year: 2015
4G/5G Heterogeneous Networks (HetNets), which are expected to have a very dense multi-layer network structure, have emerged as a solution to satisfy the increasing demand for high data rates. These networks, similar to other networks, are subject to failures of communication components, which may occur due to many reasons. Self-Healing (SH) is the ability of the network to continue its normal operation in the presence of failures. The contribution of this paper is to introduce a novel SH approach for all network base-stations (BSS) back-hauling in a HetNet. New SH radios are proposed with enabled Cognitive Radio (CR) capabilities for utilizing the spectrum. A Software Defined Wireless Network Controller (SDWNC) is used to handle all control information between all network elements (except user equipment). This novel pre-planned reactive SH approach ensures network reliability under multiple failures. A simulation study is conducted to assess the performance of our approach through the evaluation of the Degree of Recovery (DoR) under single and multiple failures. Our approach can achieve a DoR of at least 10% using only 1 SHR and an enhanced DoR can be achieved using a greater number of SHRs. © 2015 IEEE.
Mohammed F.Z.,Zagazig University |
Al-Hussaini A.S.E.-D.,PortSaid University |
El-Shehabi M.E.-S.,PortSaid University
Asian Journal of Pharmaceutical and Clinical Research | Year: 2015
Objective: This study was performed to investigate the antidiabetic effect of caffeic acid and 18β-glycyrrhetinic acid against diabetic rats. Methods: In this experiment, the animals were divided into five groups. Group I: Normal rats. Group II: Diabetic control rats. Group III: Diabetic rats treated with 18β-glycyrrhetinic. Group IV: Diabetic rats treated with caffeic acid. Group V: Diabetic rats treated with 18β-glycyrrhetinic and caffeic acid. Fasting blood glucose, insulin, glutathione reductase (GR), glutathione peroxidase (GPx), total antioxidant (TAO), catalase (CAT), and superoxide dismutase (SOD) and malondialdehyde (MDA) were analyzed. Results: Fasting blood glucose and MDA were significantly increased, whereas insulin, GR, GPx, TAO, CAT, and SOD were decreased significantly in diabetic rats. Though the diabetic rats treated with caffeic acid and 18β-glycyrrhetinic acid individual exerts beneficial effects in all the biochemical parameters in diabetic rats. The combined treatment with caffeic acid and 18β-glycyrrhetinic acid normalized all the above-mentioned biochemical parameters in diabetic rats. Conclusion: Our findings demonstrated that 18β-glycyrrhetinic acid and caffeic acid either used individually or in combination to diabetic rats has an antidiabetic effect and a good antioxidant property. From the results, the combined dose of 18β-glycyrrhetinic acid and caffeic acid to diabetic rats showed the promising effect and antioxidant property compared to individual treatments. © 2015, Asian Journal of Pharmaceutical and Clinical Research. All Rights Reserved.
Asem M.,PortSaid University |
Abbas A.T.,King Abdulaziz University |
Abbas A.T.,Mansoura University |
Al-Hemaly M.,Mansoura University |
And 2 more authors.
Life Science Journal | Year: 2013
Colorectal cancer is a major cause of cancer death and the main line of treatment is still radical surgery but this necessitates a very early diagnosis. Serum markers currently used in clinical practice for colorectal cancer are carcinoemberyonic antigen (CEA) and carbohydrate antigen (CA19-9). Both are used during surveillance and as prognostic measures for disease-free survival but not for diagnostic or screening purposes because of insufficient sensitivity and specificity. Therefore there is an urgent need for a serum marker that can help in early diagnosis. Angiogenesis plays a key role in tumor growth and progression and its targeting has been shown to be an effective anti-tumour measure. Vascular endothelial growth factor (VEGF) is one of the major factors that stimulate angiogenesis and its serum concentration could be a prognostic marker in solid tumors and has been described in a large variety of human malignancies. The aim of this work was to investigate the expression of Vascular Endothelial Growth Factor (VEGF) in colorectal cancer (CRC) patients; and correlate the findings with the patients' clinicopathologic features. Serum level of VEGF was determined in 68 patients and in 10 healthy controls and was compared to the levels of CEA and CA19-9. The results showed that serum level of VEGF were elevated in CRC patients and was significantly correlated with the levels of CEA and CA19-9. In conclusion VEGF serum level determination can be a good diagnostic marker for CRC and also open the way for VEGF inhibitors to be used as targeted therapy in CRC patients.