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Search Results: 1 - 10 of 469085 matches for " Mohamed A. Mansour "
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Efficiency of Triple-SCoT Primer in Characterization of Genetic Diversity and Genotype-Specific Markers against SSR Fingerprint in Some Egyptian Barley Genotypes  [PDF]
Aziza A. Aboulila, Mohamed Mansour
American Journal of Molecular Biology (AJMB) , 2017, DOI: 10.4236/ajmb.2017.73010
Abstract: Ten Egyptian barley genotypes (2 commercial varieties and 8 breeding lines) were cultivated under normal condition at the Experimental Farm of Sakha Agricultural Research station and exposed to salinity stress condition at the Experimental Farm of El-hosainia plain Agricultural Research station, Elsharkia Governorate, Egypt, in an attempt to identify the relative salinity tolerant genotypes. A susceptibility index (SI) was used to estimate the relative stress loss because it accounted for variation in yield potential and stress intensity. Giza 123, Line-1, Line-5, Line-6 and Line-8 genotypes were considered as saline tolerant genotypes on the basis of their highly tolerance indices values. Barley genotypes were characterized by seven SSR markers and three SCoT primers in different combinations to discern the extent of genetic variation and develop a fingerprinting key. Normal SCoT reactions amplify single segments of DNA which are 15- to 19-mer long. A new strategy was used to increase SCoT potential in genetic diversity studies by using two and three different primer combinations per reaction. Amplification products scored a polymorphism percentage of 94.44% for Triple-SCoT and 90.91% for SSR, while the average no. of polymorphic fragments/primer was 17 and 7.14 in the two marker systems, respectively. On the other side, Triple-SCoT exhibited the highest average number of positive and negative genotype-specific markers. The cluster analysis of the studied genotypes using these different marker systems revealed four dendrograms varied in their topology. The dendrogram based on Triple-SCoT data exhibited the closest relationships to those illustrated by SSR dendrogram.
Synthesis of Chlorinated Bicyclic Adduct as Biocids for Sulfate-Reducing Bacteria  [PDF]
Mona A. Youssif, Nahla A. Mansour, Azza M. Mazrouaa, Mohamed A. Shenashen
International Journal of Organic Chemistry (IJOC) , 2011, DOI: 10.4236/ijoc.2011.14033
Abstract: Synthesis of bicyclic systems containing chlorine atoms, and/or ether groups in aromatic rings can be con- sidered as an important method for building bicyclic system and production of new adducts. One of the most important types in the cycloaddition reaction is the Diels-Alder reaction (1,4 cycloaddition). In the present investigation a new ether of allylic type (dienophile) p-allyl bromo phenol was prepared and its structure was confirmed by molecular weight determination, refractive index, infrared spectra, and density. A new adduct was obtained by means of 1,4 cycloaddition reaction of hexachlorocyclopentadiene (HCP) and the new pre- pared dienophile. The reaction takes place without using solvent, catalysts, or elimination of any compound. The effect of variations in temperature, initial molar ratio and reaction duration were studied to determine the optimum conditions of the reaction. The optimum conditions reached were reaction temperature recorded 140?C, initial molar ratio diene: dienophile was 3:1 and the reaction duration time reached 6 h. Under these optimum conditions the maximum yield was 78%. The new adduct revealed very high biological effect as sulfate-reducing bacteria (SRB).
Flash Floods and Groundwater Recharge Potentials in Arid Land Alluvial Basins, Southern Red Sea Coast, Egypt  [PDF]
F. Abdalla, I. El Shamy, A. O. Bamousa, A. Mansour, A. Mohamed, M. Tahoon
International Journal of Geosciences (IJG) , 2014, DOI: 10.4236/ijg.2014.59083
Abstract:

Flash flooding is one of the periodic geohazards in the southern Red Sea Coast. However, their freshwaters are the main source of recharging alluvial and fractured aquifers. This paper presents hydrological and geomorphologic classification of Wadi El-Gemal, Wadi Umm El-Abas, Wadi Abu Ghuson and Wadi Lahmi, along the southeastern Red Sea Coast in Egypt. The main goal is to find a relationship of flash floods and groundwater recharge potentials. Satellite imageries and topographic data were analysed via remote sensing and GIS techniques. The main four valleys’ orders range from six to seven. Wadi El-Gemal was the main focus of this study; it is characterized by high stream frequency, low stream density and coarse texture, reflecting influence of highly fractured Precambrian rocks. Most of the wadis have umbrella-shaped catchment areas, due to the influence of NW-SE Najd Fault System and late E-W strike-slip faults. The main wadis were divided into 45 sub-basins. 14 of the studied sub-basins flow into Wadi El-Gemal, 7 flow into Wadi Umm El-Abas, 10 are in Abu Ghuson, and rest of the basins flow into WadiLahmi. A conceptual model was used in this study, showing that most of the sub-basins have high flash flooding and low groundwater recharge potentials. However, only two sub-basins have low potential of flooding and high potential of groundwater recharge, whereas few sub-basins have moderate potential of groundwater recharge as well as flooding. For flash floods beneficiation and mitigation, construction of multifunctional embankment dams is imminent.

Neonatal Kawasaki Disease: A Case Report  [PDF]
Mohamed A. Huneif, Ayed A. Shati, Abdu M. Abudiah, Abdullah M. Aljaser, Mansour Y. Otaif
Open Journal of Rheumatology and Autoimmune Diseases (OJRA) , 2015, DOI: 10.4236/ojra.2015.52008
Abstract: Objective: To report a case of Kawasaki disease (KD) with unusual age at presentation. Case Report: A 26-day-old Saudi boy presented with fever, irritability and poor feeding for 3 days. There was right cervical lymph node enlargement. There was mild throat congestion and bilateral congested tympanic membrane. The liver was palpable. Otherwise, there were no more abnormal physical findings. Laboratory findings revealed high erythrocyte sedimentation rate and positive C-reactive protein. The patient was admitted into an isolation room and antibiotics were started. On the 5th day, the condition of the patient deteriorated. Ampicillin was discontinued and vancomycin was started till getting the results of the culture sensitivity. On the 7th day, he developed diaper rash and fever spikes continued. On the 8th day, the patient developed swelling, redness and hotness of the right hand. Possibility of sepsis was considered and the administered antibiotics were imipenem and vancomycin, while cefotaxime was discontinued. On the 12th day, the patient developed anemia and leukocytosis. Gamma glutamyl transpeptidase was high. On the 15th day, the patient started to develop maculopapular rash on the trunk and desquamation of both hands and feet with swelling, cracked lips, bilateral conjunctival injection and unilateral neck lymph node swelling. So, the infant’s condition was clinically diagnosed as KD. Aspirin was started and 2 doses of intravenous immunoglobulins were given. On the 18th day, the condition of patient improved and the fever subsided. Conclusions: The diagnosis of KD among neonates is a clinical challenge. Diagnosis is based on clinical criteria after the exclusion of other diseases presenting with high persistent fever. Early treatment by administering intravenous immunoglobulins and aspirin can help prevent cardiac complications. There is a pressing need to raise awareness among pediatricians about this disease.
Energy and water saving by using modified closed circuits of drip irrigation system  [PDF]
Hani Abdel-Ghani Mansour, Mohamed Yousif Tayel, David A. Lightfoot, Abdel-Ghany Mohamed El-Gindy
Agricultural Sciences (AS) , 2010, DOI: 10.4236/as.2010.13019
Abstract: The aim of this research was determine the en- ergy and water use efficiencies under the modification of closed circuit drip irrigation systems designs. Field experiments carried out on transgenic maize (GDH, LL3), (Zea Mays crop) under two types of closed circuits: a) One manifold for lateral lines or Closed circuits with One Manifold of Drip Irrigation System (CM1DIS); b) Closed circuits with Two Manifolds of Drip Irrigation System (CM2DIS), and c) Traditional Drip Irrigation System (TDIS) as a control. Three lengths of lateral lines were used, 40, 60, and 80 meters. PE tubes lateral lines: 16 mm diameter; 30 cm emitters distance, and GR built-in emitters 4 lph when operating pressure 1 bar under Two levels slope conditions 0% and 2%. Experiments were conducted at the Agric. Res. Fields., Soil and Plant & Agric. System Dept., Agric. Faculty, Southern Illinois University, Car- bondale (SIUC), Illinois, USA. Under 0% level slope when using CM2DIS the increase percent of Energy Use Efficiency (EUE) were 32.27, 33.21, and 34.37% whereas with CM1DIS were 30.84, 28.96, and 27.45% On the other hand when level slope 2% were with CM2DIS 31.57, 33.14, and 34.25 while CM1DIS were 30.15, 28.98, and 27.53 under lateral lengths 40, 60 and 80 m respectively relative to TDIS. Water Use Efficiency (WUE) when level slope 0% under CM2DIS were 1.67, 1.18, and 0.87 kg/m3 compared to 1.65, 1.16, and 0.86 kg/m3 with CM1DIS and 1.35, 1.04, and 0.75 kg/m3 with TDIS whereas with level slope 2% when using CM2DIS were 1.76, 1.29, and 0.84 kg/m3 compared to 1.77, 1.30, and 0.87 kg/m3 with CM1DIS and 1.41, 1.12, and 0.76 kg/m3 (for lateral lengths 40, 60, and 80 meters respectively). Water saving percent varied widely within individual lateral lengths and between circuit types relative to TDIS. Under slope 0% level CM2DIS water saving percent values were 19.26, 12.48, and 14.03%; with CM1DIS they were 18.51, 10.50, and 12.78%; and under slope level 2% with CM2DIS they were 19.93, 13.26, and 10.38% and CM1DIS were 20.49, 13.96, and 13.23% (for lateral lengths 40, 60, 80 meters respectively). The energy use efficiency and water saving were observed under CM2DIS and CM1DIS when using the shortest lateral length 40 meters, then lateral length 60 meters, while the lowest value was observed when using lateral length 80 meters this result depends on the physical and hydraulic characteristics of the emitters, lateral line uniformity, and friction losses. CM2DIS was more energy use efficiency, EUE, water saving, and WUE than either CM1DIS or TDIS.
Real-Time Transient Stability Analysis/Assessment Based Proposed Parallel Algorithms
Mohamed A. Ali,Wagdy M. Mansour
International Journal of Electrical and Power Engineering , 2012, DOI: 10.3923/ijepe.2012.124.131
Abstract: In this study, a method for online Transient Stability Analysis/assessment (TSA) of large scale power systems is proposed. The method is based on an exact mathematical transformation of (n+m) machine system into n-equivalent Single Machine to Equivalent Bus (SMEB) Models and m-Load to Equivalent Bus (LEB) Models, where n number of machine buses and m number of load buses in the system. Then implementing proposed Parallel Algorithms (PAs) for power system TSA on developed Matlab/M-files models constructed by the researchers for system simulation. Comparative simulation results between the proposed PAs and Conventional Time Domain Method (CTDM) are presented to show the effectiveness and the validation of the proposed PAs.
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.
Design Procedure and Simulation of a Novel Multi-Modal Tactile Display Device for Biomedical Applications  [PDF]
Nader A. Mansour, Ahmed M. R. Fath El-Bab, Mohamed Abdellatif
Journal of Sensor Technology (JST) , 2014, DOI: 10.4236/jst.2014.41002
Abstract:
Tactile display is recently attracting much attention in the field of human computer interaction. There is a strong need for such a device especially for application in which the touch feeling is lost, such as surgeons willing to feel the tissue hardness during laparoscopic surgeries. In this paper, a novel multi-modal tactile display device which can display both surface shape and stiffness of an object is introduced. The conceptual design is built upon using two springs, made of Shape Memory Alloys-SMA, to control both shape and stiffness. The design parameters of this device are selected based on the spatial resolution of human finger and the stiffness range of the soft tissue. The display device is simulated using Finite Element Method, FEM, to study the effect of design parameters on the resulting stiffness. The results showed that the device can display stiffness of an object independent of its shape display. Simulation results confirmed that the stiffness display is stable when applying force by the finger during indentation for feeling stiffness, since the total stiffness error does not exceed 1.2%.
Modification of water application uniformity among closed circuit trickle irrigation systems  [PDF]
Hani A.-G. Mansour, Mohamed Yousif Tayel, Mohamed A. Abd El-Hady, David A. Lightfoot, Abdel-Ghany Mohamed El-Gindy
Agricultural Sciences (AS) , 2010, DOI: 10.4236/as.2010.11001
Abstract: The aim of this research was determine the ma- ximum application uniformity of closed circuit trickle irrigation systems designs. Laboratory tests carried out for Two types of closed circuits: a) One manifold for lateral lines or Closed circuits with One Manifold of Trikle Irrigation System (COMTIS); b) Closed circuits with Two Manifolds of Trikle Irrigation System (CTMTIS), and c) Traditional Trikle Irrigation System (TTIS) as a control. Three lengths of lateral lines were used, 40, 60, and 80 meters. PE tubes lateral lines: 16 mm diameter; 30 cm emitters distance, and GR built-in emitters 4 lph when operating pressure 1 bar. Experiments were conducted at the Agric. Eng. Res. Inst., ARC, MALR, Egypt. With COMTIS the emitter flow rate was 4.07, 3.51, and 3.59 lph compared to 4.18, 3.72, and 3.71 lph with CTMTIS and 3.21, 2.6, and 2.16 lph with TTIS (lateral lengths 40, 60, and 80 meters respectively). Uniformity varied widely within individual lateral lengths and between circuit types. Under CTMTIS uniformity values were 97.74, 95.14, and 92.03 %; with COMTIS they were 95.73, 89.45, and 83.25 %; and with TTIS they were 88.27, 84.73, and 80.53 % (for lateral lengths 40, 60, 80 meters respectively). The greatest uniformity was observed under CTMTIS and COMTIS when using the shortest lateral length 40 meters, then lateral length 60 meters, while the lowest value was observed when using lateral length 80 meters this result depends on the physical and hydraulic characteristics of the emitter and lateral line. CTMTIS was more uniform than either COMTIS or TTIS. Friction losses were decreased with CTMTIS in the emitter laterals at lengths 40 meters compared to TTIS and COMTIS. Therefore, differences may be related to increased friction losses when using TDIS and COMDIS.
Gender Effect in Trait Recognition
Mohamed A. Bencherif,Mansour Alsulaiman,Ghulam Muhammad,Zulfiqar Ali
Lecture Notes in Engineering and Computer Science , 2012,
Abstract:
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