oalib

Publish in OALib Journal

ISSN: 2333-9721

APC: Only $99

Submit

Any time

9 ( 1 )

2019 ( 344 )

2018 ( 491 )

2017 ( 506 )

Custom range...

Search Results: 1 - 10 of 37908 matches for " Mahmoud Al-Ali "
All listed articles are free for downloading (OA Articles)
Page 1 /37908
Display every page Item
Exact Solution and Conservation Laws for Fifth-Order Korteweg-de Vries Equation  [PDF]
Elham M. Al-Ali
Journal of Applied Mathematics and Physics (JAMP) , 2013, DOI: 10.4236/jamp.2013.15007
Abstract:

With the aid of Mathematica, new exact travelling wave solutions for fifth-order KdV equation are obtained by using the solitary wave ansatz method and the Wu elimination method. The derivation of conservation laws for a fifth-order KdV equation is considered.

Role of Internet of Things in the Smart Grid Technology  [PDF]
A. R. Al-Ali, Raafat Aburukba
Journal of Computer and Communications (JCC) , 2015, DOI: 10.4236/jcc.2015.35029
Abstract:

The Internet of Things (IoT) has recently emerged as enabling technology for the smart gird, smart health, smart transportation, and smart environment as well as for smart cities. The major smart grid devices are smart home appliances, distributed renewable energy resources and power substations. The seven domains existing smart grid conceptual model was developed without the IoT concept in mind. As the smart grid evolved, many attempts started to introduce the IoT as enabling technology to the grid. Each device in the grid can be considered as an object. Utilizing the concept of IoT, each device can have a unique IP address that can upload its status and download control commands via the Internet. This paper proposes a conceptual model for the smart grid within the Internet of Things context. The proposed model is based on IPV6 as the backbone of the smart grid communications layer.

Topology Optimization and Fatigue Analysis of Temporomandibular Joint Prosthesis  [PDF]
Musaddiq A. Al-Ali, Muazez A. Al-Ali, Akihiro Takezawa, Mitsuru Kitamura
World Journal of Mechanics (WJM) , 2017, DOI: 10.4236/wjm.2017.712025
Abstract: Treatment of bone tumors in the mandible often involves extensive excavation of affected bone, followed by mandibular reconstruction. Prosthetic implants may be needed to restore jaw functionality. The challenges of making prosthetic bone implants include stress shielding and extending the mechanical life of the implant. We have developed a design algorithm to improve the efficiency of prosthesis design. A finite element model of the patient case is constructed from a computer tomography scan, and the computer implements topology optimization techniques to design the prosthesis with limited stress shielding affected by highly biomechanical compatibility. Topology optimization facilitates the design of low weight structures by automatically introducing holes into the structure. This is governed by engineering predetermined constraints to meet certain job specifications. Such a design will be tested for fatigue life before it is ready to be manufactured and used. Topology optimization can be performed as a design process to achieve a final design that takes stress shielding into consideration. The problem of stress shielding is solved by matching the stiffness of the orthopedic implant to the original bone that is being replaced. The material we used was titanium alloy (Ti-6Al-7Nb). Volume fraction of the orthodox implant was used (0.2872 for the studied case) as volume constraints. Compliance of the bulk bone was set as a further constraint to match the stiffness of the bone with the designed structure. Our results show a good life expectancy for the designed parts, with 12% higher life expectancy for stress-based topology optimization than for compliance-based topology optimization.
Iraqi Women in Diasporic Spaces: Political Mobilization, Gender & Citizenship Les femmes irakiennes en diaspora : mobilisation politique, genre et citoyenneté
Nadje Al-Ali
Revue des Mondes Musulmans et de la Méditerranée , 2007, DOI: 10.4000/remmm.3371
Abstract: Cet article étudie la mobilisation politique des femmes irakiennes dans les espaces de la diaspora, en particulier le Royaume-Uni, les états-Unis et la Jordanie, comme l’action des femmes à l’intérieur de l’Irak. Il traite de deux principales questions : 1) jusqu’à quel point les différences de contexte politique, économique et juridique dans les trois pays contribuent-elles à orienter l’action des femmes et 2) quelles relations et quelles dynamiques se mettent en place entre les militantes de la diaspora et de l’intérieur. Cet article est basé sur des données empiriques originales recueillies à l’occasion d’un travail de terrain réalisé aux états-Unis, au Royaume Uni et en Jordanie en 2004 et 2005. Entretiens informels et observation participante sont les principales méthodes mises en uvre dans le cadre d’une enquête plus large sur la contribution des femmes à la transition politique. La dimension comparative est importante du fait que la culture et le climat politique général, les histoires migratoires, les idéologies et relations de genre sont différentes d’un pays à l’autre. L’auteur présente les organisations de femmes existantes, les groupes et réseaux et discute les obstacles à un engagement plus important dans le processus politique. Une dimension importante est la relation complexe entre les femmes restées à l’intérieur de l’Irak et celles qui sont revenues après 2003 ou agissent de l’extérieur. This article examines the political mobilization of Iraqi women activists in diasporic spaces, including the U.K. the U.S., Jordan as well as women’s activism inside Iraq. It addresses two main questions: 1) in how far the different political, economic and legal conditions in the UK, US and Jordan shape women’s activities or lack thereof, and 2) the relationships and dynamics between Iraqi women activists from the diaspora and inside Iraq. It is based on original empirical data obtained through fieldwork in the UK, US and Jordan in 2004 & 2005. Informal interviews and participant observation are the main methods for an ongoing wider project about Iraqi women’s contribution to political transition. The comparative dimension is particularly important since general political climate and culture, as well as historical migration trajectories, gender ideologies and relations vary in the three host countries. The author maps out the existing women’s organizations, groups and networks and discusses impediments and obstacles to a greater involvement in political processes. One important dimension is the complex relationship between women who remained inside Ira
Biochemical and Molecular Effects of Phoenix dactylifera and Ziziphus spina-christi Extracts on Candida albicans  [PDF]
Sara Al-Ali, Awatif Al-Judaibi
Journal of Biosciences and Medicines (JBM) , 2019, DOI: 10.4236/jbm.2019.73004
Abstract: Our overall knowledge of the medicinal uses of plants suggests that natural compounds could be useful in the treatment of cutaneous fungal infections in tropical regions. Furthermore, the possibilities of treatment using plant extracts may be even broader than is already known when one considers plants that have not been extensively studied in this context, such as the regional species Phoenix dactylifera and Ziziphus spina-christi. This study compared the antimicrobial activity of Phoenix dactylifera and Ziziphus spina-christi extracts in terms of their biochemical and molecular effects on Candida albicans (ATCC CA 10231). These effects included altered levels of intracellular sterols, changes in the permeability of the cell membrane, and changes in the TEF1: QRTTEF1, CaERG1: ERG1, CdERG12: CdERG1, and ERG25: ERG25 genes. Scanning electron microscopy (SEM) was used to identify morphological characteristics, and energy-dispersive X-ray spectroscopy (EDAX) analyses were conducted. In treated samples, the SEM and EDAX analyses showed cell cavities and shrinkage of the cell wall, and the number of cells was reduced to only a few abnormal cells as compared with that in the untreated samples. Yttrium was detected in the cells treated with Z. spina-christi, and high levels of osmium were detected in the cells treated with P. dactylifera. Compared with control cells, cells exposed to the concentration 150 μl/ml of Z. spina-christi extract had an average sterol concentration that was nearly 3 times higher, while the concentration was 5.5 times higher for cells treated with the 150 μl/ml of P. dactylifera extract. The ethanol extracts affected the permeability of C. albicans cell membrane. Gene sequencing showed gaps and mismatches in the ERG1, ERG12, and ERG25 genes after treatment with P. dactylifera and Z. spina-christi extracts compared with that in the controls. The results were highly significant (p ≤ 0.01). We conclude that the ethanol extracts of P. dactylifera and Z. spina-christi have antimicrobial activity through several mechanisms in the yeast cell.
Airport Information Systems—Landside Management Information Systems  [PDF]
Adam Marks, Kees Rietsema, Maytha AL-Ali
Intelligent Information Management (IIM) , 2015, DOI: 10.4236/iim.2015.73012
Abstract: Research on the intersection of the areas of aviation and management information systems is sparse. Just as within other economic sectors, members of the aviation sector must incorporate new and existing technologies as they grow to maintain their competitive edge whether in aircraft systems, airports or other aerospace and aviation related industries. A proper classification is a prerequisite to systems alignment. This paper reviews landside airport information management systems, and their connections and interoperability with other systems and who the key airport users are. The information presented in this paper is based on interviews and data collection at a number of representative airports across the United States. Airport size and function are key considerations in the acquisition of information management system airside or land side. The implication is that not all airports are equipped in the same manner and therefore these systems can only be considered as representative of what exists “on the ground”. This paper represents a point of departure or a reference for those researchers interested in a more indepth study of airport information systems on the landside.
Airport Management—Value of Customer Display Systems  [PDF]
Adam Marks, Maytha AL-Ali, Kees Rietsema
Intelligent Information Management (IIM) , 2015, DOI: 10.4236/iim.2015.75021
Abstract: By providing real-time updates of essential information, airports not only display and disseminate information but also help control the flow of traffic. In order to maximize available space, particularly in high traffic areas, Airport Display Information Systems should be integrated into the overall design of the airport and their positioning should be carefully planned to deliver optimal results. Airport Display Information Systems can help airports maximize space, increase customer satisfaction, and generate new revenue opportunities. The technology is designed not only to comply with environmental regulations, but also to help airports keep budgets in check. This paper discusses airport display systems, their connections and interoperability with other systems and who the key airport users of these airport display systems are.
An Integrated Method for the Selection of Optimum Locations for Landfilling Utilizing GIS: A Case Study of the State of Kuwait  [PDF]
Meshal Mohammad Abdullah, Sabah Al-Jenaid, Waleed Khalil Zubari, Jasem Al-Ali
Journal of Environmental Protection (JEP) , 2019, DOI: 10.4236/jep.2019.102015
Abstract: With the rise of urbanization, change in lifestyles, and food habits, the amount of Municipal Solid Waste (MSW) has been rapidly increasing with the composition constantly changing. Landfilling is the common approach for waste management in Kuwait, and around 90% of municipal wastes are disposed in landfill sites. Therefore, this study focused on the integration of different methods for the process of allocating optimum sites for MSW landfills, in four main stages. The first stage focused on utilizing the gap analysis method for the identification of effective criteria for landfill site selection, by comparing the criteria in Kuwait with the World Bank guidelines, US EPA, and Australia EPA, to suggest the best criteria for landfill site selection. These criteria were applied in the second and third stages to determine suitable locations for landfill sites using the Geographical Information System (GIS). In the last stage, the suitable areas were evaluated by studying the socioeconomic aspects such as distance to waste generation center, the proximity of existing roads, and lifespan to select optimum locations for landfilling. The results indicated that only one site with a total area of 12 km2 was considered optimum for MSW landfill sites in Kuwait. Therefore, moderate suitability areas were indicated to support and provide decision makers with more options. The moderately suitable sites are also suitable for landfilling, but they need to be designed carefully in order to avoid negative impacts on the environment and human health. Therefore, we conclude that there is an urgent need to apply the integrated waste management system in Kuwait, as well as to develop a long-term strategic plan.
The N-terminal domain of apolipoprotein B-100: structural characterization by homology modeling
Hassan Al-Ali, Hassan M Khachfe
BMC Biochemistry , 2007, DOI: 10.1186/1471-2091-8-12
Abstract: The structure of apo B-17 (the N-terminal 17% of apolipoprotein B-100) was predicted by homology modeling based on the structure of the N-terminal domain of lipovitellin (LV), a protein that shares not only sequence similarity with B17, but also a functional aspect of lipid binding and transport. The model structure was first induced to accommodate the six disulfide bonds found in that region, and then optimized using simulated annealing.The content of secondary structural elements in this model structure correlates well with the reported data from other biophysical probes. The overall topology of the model conforms with the structural outline corresponding to the apo B-17 domain as seen in the EM representation of the complete LDL structure.Atherosclerosis is a complex disease that has been linked to many risk factors, including hyperlipidemia, dyslipidemia, high blood pressure, and endothelial dysfunction [1]. Oxidative modification to the small low-density lipoprotein (LDL) has been dubbed the central event that initiates and propagates coronary artery diseases [2,3], and therefore, LDL is considered a major risk factor for atherosclerosis [4]. It was also shown that systemic inflammatory mechanisms may underlie the pathogenesis of atherosclerosis [5-7]. However, the specific structural interactions implicated in these mechanisms have not yet been elucidated.Apolipoprotein B-100 (apo B) is the sole protein component of LDL [8]; however, its large size (4536 a.a.) and the limitation of current experimental techniques require that the structures of its multiple domains be analyzed separately [9,10]. Biochemical [10], calorimetric [11], computational [12-15], and spectroscopic [16] approaches were used to probe the domain arrangement and characterization of the protein, but no molecular structure has ever been assigned to any of the different domains. These techniques, however, helped in the understanding of the overall arrangement of apo B on the LDL particle and t
FILLING IN THE BLANKS: PERCEIVING SPACE THROUGH GENDER IN VIRGINIA WOOLF’S “THE MARK ON THE WALL”
Dr. Ahmed T. Al-Ali
Academic Research International , 2012,
Abstract: Recognized as one of the major figures of modern literature, Woolf is highly regarded both for her innovative fiction techniques and insightful contributions to literary criticism. In her short fiction, she explored such themes as the elusive nature of storytelling and character study, the nature of truth and reality, and the role of women in society. Like her novels, these highly individualized, stylistic works are noted for their subjective explorations and detailed poetic narratives that capture ordinary experience while depicting the workings and perceptions of the human mind. Written in an elliptical and impressionistic style, Woolf's brief, apparently plotless stories are considered to have significantly influenced the development of modern short fiction. In “Mark on the Wall”, Woolf employs interior monologue to impart the musings of a narrator who, in speculating about a small detail on a wall, ponders a variety of topics, including personal reminiscence, history, and nature. Every rumination returns to the mark only to stray anew into reverie, as each of the narrator's seemingly meandering thoughts builds upon one another to create an intricate discourse on the nature of reality and truth. Much scholarship has been devoted to exploring Woolf’s ”The Mark on the Wall", yet the text continues to reveal layers of meaning and resonance to yet another generation. This study seeks to interrogate the nature, function, and interpretation of space in relation to Woolf's feminist stance and to _ quoting Lefebvre's remark _ Woolf's use of an acute sensitivity to show the subtle richness of everyday life.
Page 1 /37908
Display every page Item


Home
Copyright © 2008-2017 Open Access Library. All rights reserved.