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Search Results: 1 - 10 of 208 matches for " Marwa Abdulkader "
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Supra-Tentorial Cortical Ependymoma in an Adult: Case Report and Review of the Literature  [PDF]
Shaymaa Al Umran, Mahmoud Taha, Marwa Abdulkader
Open Journal of Modern Neurosurgery (OJMN) , 2018, DOI: 10.4236/ojmn.2018.84032
Abstract: Supratentorial cortical ependymoma is a rare primary brain tumor in adults. Only 50 cases are reported in the literature including pediatric and adult patients. We report a 30-year-old male with sensory-type seizures who was found to have a right posterior frontal cortical lesion with large cystic component. The lesion was resected completely and histopathology and immunohistochemistry examinations confirmed anaplastic ependymoma WHO grade III. The patient received radiotherapy treatment post-surgery, and he was tumor free one year after treatment.
Hepatic encephalpathy: New concepts of pathogenesis, biological basis and outcome
Daif Abdulkader
Saudi Journal of Gastroenterology , 2002,
Intra-Articular Autologous Platelet-Rich Plasma Hip Injection May Result in Osteogenesis Depicted as an Increase in Femoral Neck Bone Density  [PDF]
Marwa A. Ahmed, Andre Panagos
Open Journal of Regenerative Medicine (OJRM) , 2014, DOI: 10.4236/ojrm.2014.32005

Osteoporosis has become one of the most prevalent bone diseases in developed countries. As the world’s population ages, this complex skeletal disorder is predicted to become an even more widespread and serious health condition, posing greater societal economic burden. Current therapeutic agents are limited by clinically significant side effects. In this report, we present a case that suggests intra-articular platelet-rich plasma (PRP) injectate may improve bone mineral density (BMD). This observation raises a question with exciting implications—can PRP serve as a viable and relatively safe, targeted treatment option to improve bone density?

Histopathological and Immunohistochemical Study of E-cadherin in Breast Neoplasia
Marwa Elshaer
Journal of Medical Sciences , 2007,
Abstract: Immunohistochemical staining was undertaken for E-cadherin (EC), estrogen and progesterone receptors; on tissue sections of normal breast, proliferative breast lesions and malignant breast lesions. The EC positive expression manifested itself as sharp membranous staining and was assessed semi-quantitative into four categories: 0; 1+ were considered negative immunoreactivity, while 2+ and 3+ were scored as positive immunoreactivity. Although 95% of non malignant proliferative breast lesions showed positive EC immunoreactivity and reduced or lost EC expression in all Pre-invasive cases. None of invasive lobular cases express EC, in contrast to 30% of invasive duct carcinoma cases, showed reduced or lost EC expression in high histological grades. Correlation between the EC staining intensity and IDC, ILC and TC groups, statistical analysis was highly significant only for TC (p< 0.001). There was a significant relationship between E-cadherin expression and different breast neoplastic histological types. The molecular signature of breast lobular carcinomas is the loss of E-cadherin protein expression as evidenced by immunohistochemistry, whereas ductal carcinomas are typically E-cadherin positive. Present study suggests that E-cadherin may be involved in the pathogenesis of this form of breast cancer.
Energy of surface states for 3D magnetic Schrodinger operators
Marwa Nasrallah
Mathematics , 2014,
Abstract: We establish a semi-classical formula for the sum of eigenvalues of a magnetic Schrodinger operator in a three-dimensional domain with compact smooth boundary and Neumann boundary conditions. The eigenvalues we consider have eigenfunctions localized near the boundary of the domain, hence they correspond to surface states. Using relevant coordinates that straighten out the boundary, the leading order term of the energy is described in terms of the eigenvalues of model operators in the half-axis and the half-plane.
Limiting spectral distribution of Gram matrices associated with functionals of $β$-mixing processes
Marwa Banna
Mathematics , 2014,
Abstract: We give asymptotic spectral results for Gram matrices of the form $ n^{-1}\mathcal{X}_n \mathcal{X}_n^T$ where the entries of $\mathcal{X}_n$ are dependent across both rows and columns. More precisely, they consist of short or long range dependent random variables having moments of second order and that are functionals of an absolutely regular sequence. We also give a concentration inequality of the Stieltjes transform and we prove that, under an arithmetical decay condition on the $\beta$-mixing coefficients, it is almost surely concentrated around its expectation. Applications to examples of positive recurrent Markov chains and dynamical systems are also given.
Protection de la vie privée à base d'agents dans un système d'e-learning
Marwa Bekrar
Computer Science , 2014,
Abstract: The e-learning systems are designed to provide an easy and constant access to educational resources online. Indeed, E-learning systems have capacity to adapt content and learning process according to the learner profile. Adaptation techniques using advanced behavioral analysis mechanisms, called "Learner Modeling" or "Profiling". The latter require continuous tracking of the activities of the learner to identify gaps and strengths in order to tailor content to their specific needs or advise and accompany him during his apprenticeship. However, the disadvantage of these systems is that they cause learners' discouragement, for learners, alone with his screen loses its motivation to improve. Adding social extension to learning, to avoid isolation of learners and boost support and interaction between members of the learning community, was able to increase learner's motivation. However, the tools to facilitate social interactions integrated to E-learning platforms can be used for purposes other than learning. These needs, which can be educational, professional or personal, create a mixture of data from the private life and public life of learners. With the integration of these tools for e-learning systems and the growth of the amount of personal data stored in the databases of these latter, protecting the privacy of students becomes a major concern. Indeed, the exchange of profiles between e-learning systems is done without the permission of their owners. Furthermore, the profiling behavior analysis currently represents a very cost-effective way to generate profits by selling these profiles advertising companies. Today, the right to privacy is threatened from all sides. In addition to the threat from pirates, the source of the most dangerous threats is that from service providers online that users devote a blind trust. Control and centralized data storage and access privileges that have suppliers are responsible for the threat. Our work is limited to the protection of personal data in e-learning systems. We try to answer the question: How can we design a system that protects the privacy of users against threats from the provider while benefiting from all the services, including analysis of behavior? In the absence of solutions that take into account the protection and respect of privacy in e-learning systems that integrate social learning tools, we designed our own solution. Our "ApprAide" system uses a set of protocols based on security techniques to protect users' privacy. In addition, our system incorporates tools that promote social interactions as a
Direitos e responsabilidades
Revista da Associa??o Médica Brasileira , 2002,
Utilizando bem os índices prognósticos
Abdulkader Regina C. R. M.
Revista da Associa??o Médica Brasileira , 2003,
The International Experience in Private Sector Development: Lessons for Kuwait  [PDF]
Mohammad Ramadhan, Marwa Al-Musallam
Theoretical Economics Letters (TEL) , 2014, DOI: 10.4236/tel.2014.44038

The State of Kuwait is a small rich oil-based economy characterized by dominance of the large public sector in major economic activities. Such imbalanced structure has limited the role of the private sector in economic activities and has adversely affected economic growth. Based on the review of international experience in private sector development, this paper aimed to substantiate the impact of both private and public sectors growth on economic performance. Analysis of Kuwait's public expenditures verified the public sector dependency on oil revenues and inefficient utilization of resources. The theoretical review revealed a positive direct relationship between high GDP growth rate and the increased role of the private sector in the economy. Moreover, the review of recent transitional economies experiences in constructive economic transformation can be considered as an evidence of a rapid effective private sector growth. Finally, the analysis also demonstrated that Kuwait's public sector expenditures depict a rent seeking behaviour that has negatively impacted the society welfare.

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