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Search Results: 1 - 10 of 324 matches for " Wael Nabhan "
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Correlation Between Activated Clotting Time and Activated Partial Thromboplastin Time During Endovascular Treatment of Cerebral Aneurysms  [PDF]
David Faraoni, Benjamin Mine, Wael Nabhan, Pierre Nokerman, Yvon Deryck, Michel Baurain, Boris Lubicz
Open Journal of Anesthesiology (OJAnes) , 2012, DOI: 10.4236/ojanes.2012.21001
Abstract: Purpose: Endovascular treatment (EVT) of intracranial aneurysms (IA) requires a continuous anticoagulation to avoid thromboembolic complications. In order to monitor the anticoagulation, different tests may be used including the activated clotting time (ACT) and the activated partial thromboplastin time (APTT). The aim of this study was to compare ACT and APTT for the monitoring of the anticoagulation during EVT of IA. Methods: Patients referred for EVT of an IA were included. After induction, baseline ACT and APTT were recorded, followed by a bolus infusion of unfractionated heparin (50 UI.kg–1). The same tests were controlled five minutes later with the purpose of doubling the baseline ACT value. Correlation and agreement between both tests were evaluated for the percentage of change after the bolus. Multiple linear regressions were also calculated in order to show confounding factors. Complications and outcomes were also recorded. Results: 45 patients were checked for enrolment and 24 were included for analysis. Mean (SD) % variation for APTT was 432.1 (75.7) and 60.6 (23.0) for ACT with p < 0.0001. With the Bland-Altman method, value of Bias (SD) is 372 (86) with 95% limits of agreement range from 203 to 540. Pearson correlation for % variation shows r (95% CI) = –0.23 (–0.58 to 0.19) with p = 0.29 and R square = 0.05. 100% of the APTT values could be defined as excessive anticoagulation by opposition of the 8% obtained with ACT. Conclusions: This prospective observational study shows that ACT test is not well correlated with APTT and leads to a systematic excessive coagulation during EVT of IA.
Existence Solution for 5th Order Differential Equations under Some Conditions  [PDF]
Sayada Nabhan Odda
Applied Mathematics (AM) , 2010, DOI: 10.4236/am.2010.14035
Abstract: We study a nonlinear differential equations in the Banach space of real functions and continuous on a bounded and closed interval. With the help of a suitable theorems (fixed point) and some boundary conditions, the 5th order nonlinear differential equations has at least one positive solution.
Stylistic Awareness to Analyze and Comprehend Authentic Discourse in Language Classrooms  [PDF]
Rabih Joseph Nabhan
Open Journal of Modern Linguistics (OJML) , 2017, DOI: 10.4236/ojml.2017.73014
Abstract: Stylistic awareness of a text-the knowledge of syntactic, semantic, and/or pragmatic features—leads to an overall understanding of a discourse. The study will focus on the stylistics of news genre as authentic material in classrooms. The aim of this article is to draw a comparison between the language features used in online news and those used in the printed newspapers to underscore the linguistic characteristics of such media. The data to analyze will be collected from two European news media. The electronic tool will be the BBC online news http://www.bbc.co.uk/news/, while the printed one will be International Herald Tribune. The purpose of this study is to highlight the linguistic variations, if they exist, between the two media. The language will be studied in terms of syntax, semantics, and pragmatics, showing how these linguistic subfields can affect the language and determine the level of complication in understanding meaning. For discourse analysis, the same theme and topic will be selected. Examples and samples from both media will be posted to display the differences of language use. The comparison will be organized and divided into three subtitles: Syntactic Differences, Pragmatic Differences, and Semantic Differences. The paper will also focus on the effect of hyperlinks on the language and how the unlimited amount of information compressed in the virtual media make the online news unique. In addition, the limitations and weaknesses of both media will be addressed to take the research a step forward in order to make teachers aware of the flaws while using these genuine objects in language classrooms.
Cognitive Skill Transfer in English Reading Acquisition: Alphabetic and Logographic Languages Compared  [PDF]
Wael Shakkour
Open Journal of Modern Linguistics (OJML) , 2014, DOI: 10.4236/ojml.2014.44048
Abstract: The purpose of this article is to review published studies regarding acquisition of English as a second or foreign language by students of different linguistic backgrounds, in light of the English language’s opaque alphabetic orthography. This review focuses on the contribution of first language cognitive skills (orthographic knowledge, phonological awareness, and morphological awareness) in native speakers of languages with alphabetic and logographic orthographies, to English second-language reading skills (word reading and reading comprehension), to better understand the contribution of cognitive reading skills in alphabetic and logographic languages to the acquisition of English reading skills as a second language. The author examines findings in the context of second-language learning theories, and two contradictory hypotheses in particular—the linguistic interdependence hypothesis and the script-dependent hypothesis. The author finds that no consensus can be indicated as to the contribution of most native-language skills in alphabetic vs. logographic languages to the acquisition of second-language or foreign-language English reading, or even whether or not they are language-specific (script-dependent). The exception is phonological awareness in alphabetical orthographies (but not logographic orthographies) which received a consensus among researchers supporting its transfer from the native language to English as a second or foreign language.
Electronic Structure of the Cesium Oxide Molecule CsO  [PDF]
Diana Kaeen, Mahmoud Korek, Saleh Nabhan Abdulal
Journal of Modern Physics (JMP) , 2015, DOI: 10.4236/jmp.2015.613194
Abstract: Adiabatic potential energy curves of 12 doublet and quartet lowest spinless electronic states of the molecule CsO have been investigated via ab initio CASSCF and MRCI (doublet and quartet excitations with Davidson correction) calculations. The spectroscopic constants such as vibrational harmonic frequency ωe, the internuclear distance at equilibrium Re, the rotational constant Be, and the electronic transition energy Te of the ground and the excited electronic states have been calculated by fitting the energy values around the equilibrium position to a polynomial in terms of the internuclear distance. The comparison of these values to those available in the literature shows a good agreement.
Musical Approach to Auditory Processing Disorder and Phonological Difficulties  [PDF]
Rabih Joseph Nabhan, Michelle Pierre EL Bitar
Open Journal of Modern Linguistics (OJML) , 2018, DOI: 10.4236/ojml.2018.83006
Abstract: Auditory Processing Disorder (APD) is a Learning Disability (LD) that many Lebanese learners suffer from. What is needed is a method that can be implemented in schools as part of the curriculum. A musical approach can help diminish this deficit. This research aims at finding and implementing a constructive musical learning environment that could be of help to those students in order to break the barriers between them and proper education. Lebanese students with APD suffer from lack of awareness toward their particular situation. Instead of being given proper assistance without discriminating them from other students, they are treated either the same as learners without LD or in a manner that makes it hard for them to fit in with their classmates. The purpose of this paper is to examine the positive effect of the musical approach that could be of help to students with APD in Lebanon, so as to work with their phonological difficulties and prevent it from being an impediment in their learning process.
Evaluation of the Ultimate Capacity of Friction Piles  [PDF]
Wael N. Abd Elsamee
Engineering (ENG) , 2012, DOI: 10.4236/eng.2012.411100
Abstract: The precise prediction of maximum load carrying capacity of bored piles is a complex problem because the load is a function of a large number of factors. These factors include method of boring, method of concreting, quality of concrete, expertise of the construction staff, the ground conditions and the pile geometry. To ascertain the field performance and estimate load carrying capacities of piles, in-situ pile load tests are conducted. Due to practical and time constraints, it is not possible to load the pile up-to failure. In this study, field pile load test data is analyzed to estimate the ultimate load for friction piles. The analysis is based on three pile load test results. The tests are conducted at the site of The Cultural and Recreational Complex project in Port Said, Egypt. Three pile load tests are performed on bored piles of 900 mm diameter and 50 m length. Geotechnical investigations at the site are carried out to a maximum depth of 60 m. Ultimate capacities of piles are determined according to different methods including Egyptian Code of practice (2005), Tan-gent-tangent, Hansen (1963), Chin (1970), Ahmed and Pise (1997) and Decourt (1999). It was concluded that approxi- mately 8% of the ultimate load is resisted by bearing at the base of the pile, and that up to 92% of the load is resisted by friction along the shaft. Based on a comparison of pile capacity predictions using different method, recommendations are made. A new method is proposed to calculate the ultimate capacity of the pile from pile load test data. The ultimate capacity of the bored piles predicted using the proposed method appears to be reliable and compares well to different available methods.
An Experimental Study on the Effect of Foundation Depth, Size and Shape on Subgrade Reaction of Cohessionless Soil  [PDF]
Wael N. Abd Elsamee
Engineering (ENG) , 2013, DOI: 10.4236/eng.2013.510095
Abstract:

The modulus of subgrade reaction ks depends on several factors such as the size and shape of the foundation as well as the embedment depth of the foundation. The present study is an experimental analysis using plate load test to determine the effect of foundation depth, size as well as the shape on the modulus of subgrade reaction (ks) of cohesionless soils. It was carried out by using nine rigid steel plates with different sizes and shapes (circular, square and retangular). The tests were carried out on cohessionless soil with different relative densities under different applied pressures. The settlement has been measured at the surface of the plate for different depths of footings. The ultimate bearing capacity [qu] has been determined from the stress-settlement relationships. The allowable bearing capacity (qa) was determined by dividing the ultimate bearing capacity (qu) by F.S. = 3.0, after which the corresponding settlement (Sa) has been obtained. However, ks was calculated based on dividing the allowable bearing capacity (qa) by the corresponding settlement (Sa). From the present study it is concluded that the subgrade reaction ks of cohessionless soil increases with increasing foundation depth as well as foundation size. In addition, subgrade reaction ks of cohessionless soil under rectangular footing is higher than that under square and that under circular one with same equivalent area. An empirical formula is presented to calculate the subgrade reaction ks of cohessionless soil under square foundation taking into consideration foundation depth. Fair agreement has been obtained between values of ks from the empirical formula at depth of footing = 0.00 B and Biot (1937) as well as Meyerhof and Baike (1965).

New Method for Prediction Pile Capacity Executed by Continuous Flight Auger (CFA)  [PDF]
Wael N. Abd Elsamee
Engineering (ENG) , 2013, DOI: 10.4236/eng.2013.54047
Abstract:

A study of piles is quit complex and the estimation of carrying capacity is calculated from theoretical formula and load test results. The design resistance may be calculated using conventional static pile design theory. The pile founding depths should be predetermined before installation from a site geotechnical investigation. To ascertain the field performance and estimate load carrying capacities of piles, in-situ pile load tests should be conducted. In this study, field pile load test data is analyzed to estimate the ultimate load for end bearing piles. The investigated site is about 100 × 110 m located in Alexandria, Egypt. Geotechnical investigations at the site are carried out to a maximum depth of 45 m. Four borings have been done in field. The tests are conducted at the site for two skelton structure buildings to be constructed on raft foundation rested on piles executed by continuous flight auger. Four pile load tests are performed on 600 mmdiameters and 27 mlengths. Ultimate capacities of piles are determined according to different methods. It is concluded that the percentage of friction load carried by the shaft along the pile length is about 46% of total load while the percentage of load carried by the end bearing is 54% of total load. A new proposed method by the author is presented to calculate the ultimate capacity of pile from pile load test. The proposed method depends on the settlement of pile without taken into consideration the elastic deformation. An empirical formula is presented from the relationship between stress and settlement of pile due to friction and end bearing only after deducting the elastic deformation. However, the obtained results for the ultimate

Macro and Micromorphological Studies on Seven Species of Heliotropium L. (Boraginaceae Juss.) in South West of Saudi Arabia  [PDF]
Wael Taha Kasem
American Journal of Plant Sciences (AJPS) , 2015, DOI: 10.4236/ajps.2015.69136
Abstract: Genus Heliotropium L. (Heliotropiaceae) in south west of Saudi Arabia has been studied; seven species of H. arbainense Fresen, H. longiflorum (D.C.) Jauber & Spach, H. petrocarpum Hockst & Steud, H. strigosium Willd, H. zeylanicum Lam., H. jizanense Al-Turki and H. lasiocarpum Fisch were collected, recognized, typed and nomenclatured. The most valuable characters were those of macro and distinct micromorphological data such as stomata, hairs, pollen grains and stem anatomy. Light microscopy has been used in these studies. From the obtained results, trichomes and pollen grains data in addition to stem anatomy indicated good taxonomic tools to differentiate between species of this genus. Different traditional measurements were strikingly also helpful for the discrimination of species. H. longiflorum was characterized by distinctive data such as prominent anatomical information, P/E (1.8 μm) in addition to presence of spindle hair which in turn can be separated as a taxonomic level. Also, the results revealed a complete affinity between the two species of H. jizanense
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