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Search Results: 1 - 10 of 405134 matches for " Hany M. Hassan "
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Heat shock proteins development in different stages of schistocerca gregaria as response to heavy metals intoxication  [PDF]
Hesham A. Yousef, Amira Afify, Afaf Abdel Meguid, Hany M. Hassan
Natural Science (NS) , 2011, DOI: 10.4236/ns.2011.33028
Abstract: The induction of heat shock proteins in different stages of S. gergaria exposed to long and short term contamination with heavy metals, Cd and Pb in food was determined, revealing a prominent variable effect in response to the term of exposure and the type of contamination. HSP 70 was specially quantified and characterized to reveal the probability of using HSP as a biomarker for pollution.
Using Automation Controller System and Simulation Program for Testing Closed Circuits of Mini-Sprinkler Irrigation System  [PDF]
Hani A. Mansour, Hany M. Mehanna, Mohamed E. El-Hagarey, Ahmehd S. Hassan
Open Journal of Modelling and Simulation (OJMSi) , 2013, DOI: 10.4236/ojmsi.2013.12003
Abstract: The field experiments were conducted at the experimental farm of Faculty of agricultural, southern Illinois University SIUC, USA. The project makes the irrigation automated. With the use of low cost sensors and the simple circuitry makes currently project a low cost product, which can be bought even by a poor farmer. This research work is best suited for places where water is scares and has to be used in limited quantity and this proposal is a model to modernize the agriculture industries at a mass scale with optimum expenditure. In the field of agricultural engineering, use of sensor method of irrigation operation is important and it is well known that closed circuits of Mini-sprinkler irrigation system are very economical and efficient. Closed circuits are considered one of the modifications of Mini-sprinkler irrigation system, and added advantages to Mini-sprinkler irrigation system because it can relieve low operating pressures problem at the end of the lateral lines. In the conventional closed circuits of Mini-sprinkler irrigation system, the farmer has to keep watch on irrigation timetable, which is different for different crops. Using this system, one can save manpower, water to improve production and ultimately profit. The data could be summarized in following: Irrigation methods under study when using lateral length 60 mcould be ranked in the following ascending order according the values of the predicted and measured head losses CM1M-SIS < CM2M-SIS.The correlation (Corr.) coefficients were used to compare the predicted and measured head losses along the lateral lines of all the closed circuits designs. Generally, the values of correlation analysis were (>0.90) were obtained with 0% field slope60 mlength (experimental conditions) for all closed circuits.The interaction between irrigation methods: at the start there are significant differences between CM2M-SIS and CM1M-SIS.
An Accurate Numerical Solution for the Modified Equal Width Wave Equation Using the Fourier Pseudo-Spectral Method  [PDF]
Hany N. Hassan
Journal of Applied Mathematics and Physics (JAMP) , 2016, DOI: 10.4236/jamp.2016.46110
Abstract: In this study, the numerical solution for the Modified Equal Width Wave (MEW) equation is presented using Fourier spectral method that use to discretize the space variable and Leap-frog method scheme for time dependence. Test problems including the single soliton wave motion, interaction of two solitary waves and interaction of three solitary waves will use to validate the proposed method. The three invariants of the motion are evaluated to determine the conservation properties of the generated scheme. Finally, a Maxwellian initial condition pulse is then studied. The L2 and L error norms are computed to study the accuracy and the simplicity of the presented method.
Development of New Strategy for Non-Antibiotic Therapy: Dromedary Camel Lactoferrin Has a Potent Antimicrobial and Immunomodulator Effects  [PDF]
Alaa B. Ismael, Salama M. Abd El Hafez, Manal B. Mahmoud, Abdel-Kader A. Elaraby, Hany M. Hassan
Advances in Infectious Diseases (AID) , 2013, DOI: 10.4236/aid.2013.34034

The human and bovine lactoferrin have been studied extensively, but very few reports have been published concerning camel lactoferrin (cLf). The present study aimed to isolate cLf and evaluate its efficiency including antimicrobial activity and immunomodulator effects. cLf isolation was attempted from camel milk whey using a cation exchange chromatography by SP-Sepharose. The antimicrobial activity of the isolated cLf was investigated against Staphylococcus aureus (S. aureus), Streptococcus agalactiae (S. agalactiae), Escherichia coli (E. coli) and Pseudomonas aeruginosa (P. aerogenosa) strains. The immune effect of cLf was studied by lymphocyte transformation test. It was found that cLf was separated around molecular weight of 80 kDa and showed significant inhibitory effect against E. coli followed by P. aeruginosa, S. agalactiae and S. aureus. cLf increased lymphocyte transformations mean values in a dose dependant manner. The highest transformations mean value was determined at 50 μg/mL. In conclusion, these results suggest that cLf is a potent natural

Impact of Beam Quality Q for 137Cs on NK and ND,W for Different Types of Ionization Chambers
G. M. Hassan,N. Rabie,Hany A. Shousha,M. Ezzat
Applied Physics Research , 2011, DOI: 10.5539/apr.v3n1p115
Abstract: The calibration of different types of ionization chambers in radiotherapy level is done using different beam qualities i.e. {gamma}-rays from 137Cs and 60Co. The most common reference beam quality (Qo) used for the calibration of ionization chambers in therapy level is 60Co {gamma}-rays to calculate calibration coefficient factor either in air (NK) or water (ND,W). In this study we determine NK for two types of ionization chambers PTW-30013 and NE-2561 in beam quality (Q) of 137Cs. The reference values of NK for ionization chamber type M-32002 which determine in beam qualities Q and Qo were 24.8{mu}Gy/nC and 25.4 {mu}Gy/nC respectively. These values were used to determine the NK and ND,W for unknown chambers in beam quality Q. The beam quality correction factor KQQo in terms of air and absorbed dose to water for different ionization chambers used was 0.980±0.01, 0.983±0.009 and 1.0001±0.008, 1.0005±0.006 for TM-30013 and NPL 229 respectively.
Performance of WSNs under the Effect of Collisions and Interference  [PDF]
Mark Onsy, Ramy Salah, Michael Makar, Ghada Badawi, Ahmed Kenawy, Hassan H. Halawa, Tarek K. Refaat, Ramez M. Daoud, Hassanein H. Amer, Hany M. ElSayed, Magdy El Soudani
Wireless Sensor Network (WSN) , 2014, DOI: 10.4236/wsn.2014.66010
This paper proposes a methodology for calculating the energy consumed by a Wireless Sensor Network as well as its throughput under the effect of a jamming node modelling interference to account for collisions and retransmissions. Accordingly, the proposed methodology takes into consideration retransmissions and data dropped due to interference and collisions simultaneously. Simulations are conducted using OPNET to model various scenarios utilizing off-the-shelf wireless communication standards, namely ZigBee, Wi-Fi and Low Power Wi-Fi. A figure of merit is developed to offer more representative results for applications with different requirements. In achieving different requirements for a given application, there is a clear trade-off between energy consumption and throughput.
Quercetin Protects against Diabetes-Induced Exaggerated Vasoconstriction in Rats: Effect on Low Grade Inflammation
Mona F. Mahmoud, Noura A. Hassan, Hany M. El Bassossy, Ahmed Fahmy
PLOS ONE , 2013, DOI: 10.1371/journal.pone.0063784
Abstract: Vascular complications are the leading cause of morbidity and mortality in patients with diabetes. Quercetin is an important flavonoid with antioxidant and anti-inflammatory activity. Here, the effect of quercetin on diabetes-induced exaggerated vasoconstriction in insulin deficient and insulin resistant rat models was investigated. Insulin deficiency was induced by streptozotocin while, insulin resistance by fructose. Rats were left 8 weeks or 12 weeks after STZ or fructose administration respectively. Quercetin was daily administered in the last 6 weeks. Then, tail blood pressure (BP) was recorded in conscious animals; concentration-response curves for phenylephrine (PE) and KCl were studied in thoracic aorta rings. Non-fasting blood glucose level, serum insulin level, insulin resistance index, serum tumour necrosis factor-α (TNF-α) and serum C-reactive protein (CRP) were determined. Nuclear transcription factor-κB (NF-κB) was assessed by immunofluorescence technique. Histopathological examination was also performed. The results showed that quercetin protected against diabetes-induced exaggerated vasoconstriction and reduced the elevated blood pressure. In addition, quercetin inhibited diabetes associated adventitial leukocyte infiltration, endothelial pyknosis and increased collagen deposition. These effects were accompanied with reduction in serum level of both TNF-α and CRP and inhibition of aortic NF-κB by quercetin in both models of diabetes. On the other hand, quercetin did not affect glucose level in any of the used diabetic models. This suggests that the protective effect of quercetin is mediated by its anti-inflammatory effect rather than its metabolic effects. In summary, quercetin is potential candidate to prevent diabetic vascular complications in both insulin deficiency and resistance via its inhibitory effect on inflammatory pathways especially NF-κB signaling.
Multi-Node Fault-Tolerant Two-Cell Real-Time S2A Network  [PDF]
Merna N. Abou Eita, Mostafa W. Hussein, Ahmed A. Ibrahim, Shereen S. Abouelazayem, Mennatallah A. Morsi, Eslam A. Moustafa, Hassan H. Halawa, Ramez M. Daoud, Hassanein H. Amer, Hany M. ElSayed
Intelligent Control and Automation (ICA) , 2016, DOI: 10.4236/ica.2016.72004
Abstract: This paper presents a novel fault-tolerant networked control system architecture consisting of two cells working in-line. This architecture is fault-tolerant at the level of the controllers as well as the sensors. Each cell is based on the sensor-to-actuator approach and has an additional supervisor node. It is proven, via analysis as well as OMNeT++ simulations that the production line succeeds in meeting all control system requirements with no dropped or over-delayed packets. A reliability analysis is then undertaken to quantitatively estimate the increase in reliability due to the introduction of fault-tolerance.
Reaction of nitrilimines with 1,4-bismaleimidobenzene
Hany M. M. Dalloul
Bulletin of the Chemical Society of Ethiopia , 2011,
Abstract: A series of 1,4-bis(3-aroyl-1-aryl-3a,4,6,6a-tetrahydro-1H,5H-pyrrolo[3,4-c]pyrazol-4,6-dion-5-yl)benzene was synthesized by the reaction of 1,4-bis-maleimidobenzene with appropriate nitrilimines. The microanalysis and spectral data of the synthesized compounds are in full agreement with their molecular structures. KEY WORDS: Fusedpyrazoles, 1,4-Bismaleimidobenzene, Nitrilimines, Cycloaddition Bull. Chem. Soc. Ethiop. 2011, 25(3), 465-468.
Reaction of nitrilimines with 1,4-bismaleimidobenzene
Hany M. M. Dalloul
Bulletin of the Chemical Society of Ethiopia , 2011,
Abstract: A series of 1,4-bis(3-aroyl-1-aryl-3a,4,6,6a-tetrahydro-1H,5H-pyrrolo[3,4-c]pyrazol-4,6-dion-5-yl)benzene was synthesized by the reaction of 1,4-bis-maleimidobenzene with appropriate nitrilimines. The microanalysis and spectral data of the synthesized compounds are in full agreement with their molecular structures.
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