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Search Results: 1 - 10 of 27037 matches for " Ahmed Ali "
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Synthesis of Some New Spiro β-Lactams and Thiazolidinones Compounds Containing Sulfur Incorporating Quinon Compounds  [PDF]
Nadia Ali Ahmed Elkanzi
International Journal of Organic Chemistry (IJOC) , 2012, DOI: 10.4236/ijoc.2012.24048
Abstract: A series of spiro, β-Lactams, and thiazolidinones incorporating compounds 4 have been synthesized by cycloaddition reaction of, chloroacetyl chloride and mercaptoacetic acid with the synthesized Shiff,s bases 5a-c to give new spiro β- Lactam 6a-c and spiro thiazolidinone 7a-c the cycloaddition were characterized by spectral data including HNMR, 13C-NMR, IR and elemental analysis.
Continuously Monitoring Foetal ECG using Mobile Telemedicine Sensor Network  [PDF]
Mahmoud Ahmed Suliman Ali
Engineering (ENG) , 2013, DOI: 10.4236/eng.2013.55B013
Abstract: Foetus ECG monitoring based on Bluetooth portable devices promise to provide an efficient, accurate, and economic way to monitor foetus health outside the hospital. In this paper we discuss a new idea in biomedical field may be useful for Medical services. The idea is deliver the status of patent to any location within the coverage of cellular networks, such as the global system for mobile (GSM) communications. Pregnancy women from a rural area just like rural in Sudan(where they haven’t transportation to a hospital), could be given a routine check by mobile phone without having to commute regularly to a hospital. Routine inspections and monitoring could be done while the pregnancy women is at home, traveling(nomadic), at work, or at leisure, thereby relieving resources for more demanding hospital cases. Advances in mobile technology have made wireless telemedicine more practical both within hospitals and globally. The Bluetooth system with low cost the poor women can use and also has low electromagnetic waves, it is healthy in use (no risk).
Security Council Response to Human Rights Violation in Term of Combating Terrorism: Retrospect and Prospect  [PDF]
Ali Ahmed Shaglah
Beijing Law Review (BLR) , 2016, DOI: 10.4236/blr.2016.72012
Abstract: The role of the Security Council to combat terrorism had obviously grown since 9/11. The Council adopted numerous resolutions which carry commitments upon the Member States to counter-terrorism. In turn, the States have enacted or amended laws. Some of these laws and measures have shown negative effects on human rights. As a result, the Security Council has gradually indicated to the significance of protection human rights while countering terrorism. However, the practice of States, besides the presence of some gaps in the decisions of the Council, is still reflecting violations of human rights. Consequently, the Council must take effective ways to guarantee human rights and to achieve positive results in the fight against terrorism. This paper examines the anti-terrorism efforts of the Security Council and its impact on human rights. It is concentrated on the Council’s response to such violations. Resultantly, this study provides recommendations to ensure human rights while combating terrorism.
Prediction of Electrical Output Power of Combined Cycle Power Plant Using Regression ANN Model  [PDF]
Elkhawad Ali Elfaki, Ahmed Hassan Ahmed
Journal of Power and Energy Engineering (JPEE) , 2018, DOI: 10.4236/jpee.2018.612002
Abstract: Recently, regression artificial neural networks are used to model various systems that have high dimensionality with nonlinear relations. The system under study must have enough dataset available to train the neural network. The aim of this work is to apply and experiment various options effects on feed-foreword artificial neural network (ANN) which used to obtain regression model that predicts electrical output power (EP) of combined cycle power plant based on 4 inputs. Dataset is obtained from an open online source. The work shows and explains the stochastic behavior of the regression neural, experiments the effect of number of neurons of the hidden layers. It shows also higher performance for larger training dataset size; at the other hand, it shows different effect of larger number of variables as input. In addition, two different training functions are applied and compared. Lastly, simple statistical study on the error between real values and estimated values using ANN is conducted, which shows the reliability of the model. This paper provides a quick reference to the effects of main parameters of regression neural networks.
On Two Extension Formulas for Lauricella’s Function of the Second Kind of Several Variables  [PDF]
Ahmed Ali Atash, Ahmed Ali Al-Gonah
Journal of Applied Mathematics and Physics (JAMP) , 2016, DOI: 10.4236/jamp.2016.43062
Abstract: The aim of this research paper is to derive two extension formulas for Lauricella’s function of the second kind of several variables with the help of generalized Dixon’s theorem on the sum of the series \"\"?obtained by Lavoie et al. [1]. Some special cases of these formulas are also deduced.
Macronutrients Effect on Secondary Somatic Embryogenesis of Moroccan Cork Oak (Quercus suber L.)  [PDF]
Naouar Ben Ali, Ahmed Lamarti
American Journal of Plant Sciences (AJPS) , 2014, DOI: 10.4236/ajps.2014.513199

To define the preliminary embryogenesis culture conditions of Moroccan Cork Oak (Quercus suber L.) in secondary propagation systems, secondary embryos formation from primary embryos were analyzed using seven macronutrient medias: (Chalupa) (BTM), Murashige and Skoog (MS), Schenk and Hildebrant (SH), Schenk and Hildebrant with half content macronutrients (SH ?), full Gamborg (G), Margara (N30K) and Woody Plant Media(WPM). Mature primary embryos at cotyledonal stage of 8 - 10 mm, were placed in each culture medium, and supplemented with 30 g/l of glucose and 7 g/l of agar without PGR. The experimental design consisted of a Petri dish containing three embryos explants. Each one of the seven treatments was composed of ten Petri dishes. Mean number of secondary somatic embryos, clusters and new embryogenic formation on clusters were recorded after 8 weeks, and evaluated by statistical analysis. There were no significant differences (p ≤ 0.05) in clusters and new embryos on clusters formation among evaluated media; but mean number of secondary embryos was significantly higher in N30K (4.37 ± 0.48) compared with control media (1.37 ± 0.15). The morphology of secondary embryos grown in the N30K medium exclusively showed the presence of three embryogenic stages: early cotyledonal with translucide aspect, white opaque, or green, and mature embryos. These results indicate that the medium do influence the morphogenic characteristics of produced embryos. Our finding revealed that secondary somatic embryos produced in N30K medium presented better

Geometric Calibration of Low-Cost Flatbed Scanners for Large Scale Mapping Applications  [PDF]
Ahmed F. Elaksher, Tarig Ali
Modern Instrumentation (MI) , 2018, DOI: 10.4236/mi.2018.72002
Abstract: Scanning hardcopy non-metric images is one of the most important sources in digital mapping. Low-cost scanners are still widely used in many applications as they can produce digital images of comparable precisions to those produced by expensive professional scanners. Yet, inexpensive scanners introduce geometrical distortions in the measured image coordinates that must be assessed and compensated before using their products for further analysis. In this article, several 2D-to-2D transformation models were investigated to calibrate flatbed scanners with different resolutions and sizes. We evaluated the potential of each model using two gridded-crosses plotted on high-quality transparent sheets. Control coordinates were provided through a photogram-metric analytical plotter. After scanning the sheets, least squares matching was applied to determine the precise locations of the crosses. By comparing the control coordinates and those estimated from digitized images, it was found that the mathematical model based on the projective transformation gives the best results for standardizing the geometric properties of flatbed scanners. The results show that scanning resolution of 2400 dpi achieves the requirements for large-scale mapping applications.
Editorial: Neglected diseases: burden and attention
Ahmed Ali
Ethiopian Journal of Health Development , 2005,
Decisions under unpredictable losses
Ali Ahmed
Judgment and Decision Making , 2007,
Abstract: An experimental test of the descriptive adequacy of the extit{restated diversification principle} is presented. The principle postulates that risk-averse utility maximizers will pool risks for their mutual benefit, even if information is missing about the probabilities of losses. It is enough for people to assume that they face equal risks when they pool risks. The results of the experiment support the principle.
Rare Radiative $B$ Decays in the Standard Model
Ahmed Ali
Physics , 1995,
Abstract: A status report on the theory and phenomenology of rare radiative $B$ decays in the standard model is presented with emphasis on the measured decays $B \to X_s \gamma$ and $B \to K^* \gamma$. Standard model is in agreement with experiments though this comparison is not completely quantitative due to imprecise data and lack of the complete next-to-leading order contributions to the decay rates. Despite this, it is possible to extract non-perturbative parameters from the shape of the photon energy spectrum in $B \to X_s \gamma$, such as the $b$-quark mass and the kinetic energy of the $b$ quark in $B$ hadron. The measured decay rate $\BBGAMAXS =(2.32\pm 0.67) \times 10^{-4}$ can also be used to extract the CKM ratio $\absvts/\absvcb$, yielding $\absvts/\absvcb =1.10 \pm 0.43$. Issues bearing on the determination of the parameters of the CKM matrix from the CKM-suppressed decays $B \to X_d + \gamma$ and $B \to (\rho,\omega) + \gamma$ are also discussed. It is argued that valuable and independent constraints on the CKM matrix can be obtained from the measurements of these decays, in particular those involving neutral $B$-mesons (to appear in the Proceedings of the XXXth Rencontres de Moriond ``Electroweak Interactions and Unified Theories'', Les Arcs, France, March 1995).
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