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Search Results: 1 - 10 of 325415 matches for " Tamer S. Sobhy "
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Role of Intranasal Steroid in the Prevention of Recurrent Nasal Symptoms after Adenoidectomy
Tamer S. Sobhy
International Journal of Otolaryngology , 2013, DOI: 10.1155/2013/603493
Abstract: Background. Intranasal steroid provides an efficient nonsurgical alternative to adenoidectomy for theimprovement of adenoid nasal obstruction. Objective. To demonstrate the role of intranasal steroid in the prevention of adenoid regrowth after adenoidectomy. Methods. Prospective randomized controlled study. Two hundred children after adenoidectomy were divided into 2 groups. Group I received postoperative intranasal steroid and group II received postoperative intranasal saline spray. Both medications were administered for 12 weeks postoperatively. Patients were followed up for 1 year. Followup was done using the nasopharyngeal lateral X-rays, reporting the degree of the symptoms. Results. Significant difference between both groups after 6 months and after 1 year. The intranasal steroid group had significantly lower score after 6 months and after 1 year as regards nasal obstruction, nasal discharge, and snoring than the intranasal saline group. 2 weeks postoperatively, there was no difference between both groups as regards nasal obstruction, discharge, or snoring. As regards lateral radiographs, there was statistically significant difference between both groups 1 year but not 6 months postoperatively. Conclusion. Factors influencing the outcome of intranasal steroids therapy in the prevention of adenoid regrowth have not been identified. However, this treatment may obtain successful results in children to avoid readenoidectomy. 1. Introduction Nasal obstruction is one of the main symptoms of adenoid hypertrophy; they are also presented with chronic rhinorrhea, snoring, hyponasal speech, and obstructive sleep disorder [1]. Adenoidectomy can reduce both nasal obstructions and upper respiratory infections. However, some patients display clinically significantly persistent nasal symptoms even after surgery. Symptoms, such as nasal obstruction or recurrent upper respiratory infections, persist in 19–26% of patients [2]. Adenoidectomy remains a commonly performed procedure, although it produces short-term benefits [3]. There are 2 difficulties that have been described to prevent complete adenoidal removal. Firstly, lymphoid tissue in the pharyngeal recess is considered by all authors as difficult to remove [4]. The second difficulty is the bulging adenoidal tissue into the posterior choanae, which was addressed by Pearl and Manoukian [5]; they found choanal adenoids in 9% of their study group. Although there are few nonsurgical alternative treatment options, these may be considered in less serious cases. Accordingly, studies about intranasal steroid
The Influence of Fiber Length and Concentration on the Physical Properties of Wheat Husk Fibers Rubber Composites
Maged S. Sobhy,M. T. Tammam
International Journal of Polymer Science , 2010, DOI: 10.1155/2010/528173
Abstract: Ethylene-propylene-diene terpolymer (EPDM)/wheat husk fibers (WHFs) composites were prepared using a laboratory size two-roll mill. Cure characteristics and some physical properties such as swelling, mechanical, and thermal properties of the vulcanizates were studied. The adhesion status between the WHF and rubber matrix is lacked in general, but it started to reinforce the matrix at higher WHF contents where a higher restriction to molecular motion of the macromolecules with uniformed stress distribution of the fibers is produced. From the TGA analysis, a thermally stable property is exhibited, which in turn partially enhanced the reinforcement of the WHF-EPDM composites due to the natural adhesion during vulcanization. 1. Introduction Natural fibers are subdivided based on their origins, coming from plants, animals, or minerals. Natural Plant-fibers are grouped into four types: seed hairs (cotton, kapok), bast-fibers (flax, hemp, jute, ramie), leaf-fibers (sisal, henequen, coir, abaca), and wood flour (wheat husk, rice husk) [1–5]. It is well known that wheat husk fibers were employed in Egypt [1] for a very long time ago for buildings as construction materials mixed with clay. Generally, the different types of natural fibers are used to reinforce plastics (thermosets as well as thermoplastics) and reach the mechanical properties of glass-fiber composites, and they are already applied, for example, in automobile and furniture industries due to their relative high strength and stiffness and low density [5]. Composites can be tailored to have the desired properties by incorporating particulate fillers into a polymer matrix to suit different applications [6]. For economic and environmental reasons [7, 8], there is an increasing use of polymer composites filled with lignocellulosic materials such as wood flour, rice husk, wheat husk, jute, and sisal [9–12]. The main disadvantage encountered during the incorporation of natural lignocellulosic materials into polymers is the lack of good interfacial adhesion between the two components, especially in the case of rubbers, due to the incompatibility of hydrophilic natural fibers that are to be used as reinforcement with hydrophobic polymer matrix [13, 14]. Furthermore, these composites are often associated with agglomeration as a result of insufficient dispersion, caused by the tendency of fillers to also form hydrogen bonds with each other during processing [13–15]. Moreover, the polar hydroxyl groups on the surface of the lignocellulosic materials have difficulty in forming a well-bonded interface with a
Review Essay: Gurpreet Mahajan & Surinder S. Jodhka, eds. Religion, Community and Development: Changing Contours of Politics and Policy in India.
Tamer S?yler
Transcience : a Journal of Global Studies , 2011,
S.Tamer Cavusgil
InternexT : Revista Eletr?nica de Negócios Internacionais da ESPM , 2013,
Abstract: Some three decades ago, the business world was focused strictly on such post-industrial economies as the U.S., Germany, UK, and Japan. It was thought that there was no place beyond the western markets. Fast forward to today, the marketplace has been transformed radically. The forces of globalization brought about a highly competitive and crowded landscape, featuring numerous new players from the so-called Emerging Markets (better referred to as ‘growth markets’ since the most common element of these rapidly transforming economies is sustained growth). The center of economic gravity has now shifted to east Asia. Yesterday’s poor and developing countries have profited from the globalized information and communication technologies. These countries have been experiencing rapid pace of economic development, market liberalization, industrialization, modernization, and urbanization.
The Simplicity of the Gandhian Discourse in Hind Swaraj (1909)
Tamer S?yler
Journal of Alternative Perspectives in the Social Sciences , 2009,
Abstract: 2009 is the 100th anniversary of Hind Swaraj.1 In thislittle booklet, Gandhi launched his critique of modernity andever since, Hind Swaraj has been treated as Gandhi’sseminal work.2 Gandhi attracted many scholars and there isa vast literature on Gandhi. For or against Gandhi, all agreeon at least one aspect of the Gandhian discourse in HindSwaraj: its simplicity. In the following paragraphs I will try tomake sense of this simplicity. The consensus amongst thescholars on the point that Hind Swaraj is a very simple texttends to disappear when it comes to interpreting this veryaspect. While according to some, Gandhi's message is simpleas he was a weak thinker with a reactionary mind -whichthey argue, reveals his medieval and mystical ideology-; forothers like Anthony Parel, such views are missing the pointthat it is very easy to misjudge the simplicity of Hind Swarajwith a casual reading (Mukherjee:1991; Parel:1997). Pareland his line of thought contend that since Gandhi soughtsimplicity in all things, unless the readers focus on thesubtle messages of the book, they will be unable to grasp thedeeper meaning of the text (1997: xvii). The literature is fullof similar views from both sides. Although those views havenuances, they share one thing in common. They tell us moreabout the authors than Gandhi himself. In this essay, I am not going to fall into a similar pattern and speculate on thenature of the simplicity of the Gandhian discourse but theimpacts of it.
Gandhi, Civilization, Non-Violence and Obama
Tamer S?yler
Journal of Alternative Perspectives in the Social Sciences , 2010,
Abstract: How should we understand Gandhi’s commitment to nonviolence?After discussing and refuting the idea that Gandhi’s conceptionof non-violence can be treated merely as a method to stand up toaggression, its embedment in a concept of true civilization is examined. It is argued that the important nuances between the definitions of civilization in the Gujarati and the English versions of Gandhi’s seminal work Hind Swaraj (1909) reveal Gandhi’s conception of civilization.
Chemical Constituents and Antimicrobial Activity of Helichrysum stoechas
E.A. Sobhy,S.S. El-Feky
Asian Journal of Plant Sciences , 2007,
Abstract: Chemical constituents and antimicrobial activity of the essential oils and crude ethanol extract from apical part of Helichrysum stoechas were investigated. The chromatographic and spectrophotometric analysis revealed that the major components of essential oil were alpha-pinene (59%), limonen (16.7%), alpha-bisabolol (9.6%) and beta-carophyllene (4%). The major components of ethanolic extract were 3 isomers of caffeoylquinic acid, 2 isomeric dicaffeoylquinic acids, a pigenin glucosides, quercetin and kaempferol. Both essential oils and ethanolic extracts had significant antimicrobial activity on Staphylococcus aureus, Staphylococcus epidermis and Klebsiella pneumonae in addition to some pathogenic fungi as Candida albicans.
The Products of Regularly Solvable Operators with Their Spectra in Direct Sum Spaces  [PDF]
Sobhy El-Sayed Ibrahim
Advances in Pure Mathematics (APM) , 2013, DOI: 10.4236/apm.2013.34060

In this paper, we consider the general quasi-differential expressions \"\" each of order n with complex coefficients and their formal adjoints on the interval (a,b). It is shown in direct sum spaces \"\" of functions defined on each of the separate intervals with the cases of one and two singular end-points and when all solutions of the equation \"\" and its adjoint \"\" are in \"\" (the limit circle case) that all well-posed extensions of the minimal operator \"\" have resolvents which are HilbertSchmidt integral operators and consequently have a wholly discrete spectrum. This implies that all the regularly solvable operators have all the standard essential spectra to be empty. These results extend those of formally symmetric expression \"\" studied in [1-10] and those of general quasi-differential expressions

Quantitative Phase Analysis Based on Rietveld Structure Refinement for Carbonate Rocks  [PDF]
Mehmet Tamer
Journal of Modern Physics (JMP) , 2013, DOI: 10.4236/jmp.2013.48154

QPA (Quantitative Phase Analysis) of carbonate rocks bearing calcite and dolomite using X-ray diffractometry (XRD) can be performed using the combined Rietveld Structure Refinement (RSR) and semiquantitative Reference Intensity Ratio (RIR) methods, providing an estimation of crystalline phase in a mixture. Different ratios of five samples were prepared by mixing these crystal minerals with high sensitively. The scan speeds, adequate to determine mineral phases in rock samples, were used as 6 degrees per minute with 0.08 steps. The XRD analysis with commercial TOPAS 3.0 program, defined by a new generation of profile and structure analysis software, based on RSR provides Bragg reflection profiles and the dimension of the unit cell of a phase. The weight fractions of each phase were found by Le Bail and Pawley methods in RSR using a pseudo-Voigt peak shape model. The samples were also characterized by using X-ray fluorescence (XRF) and atomic absorption spectrometer (AAS). These analyses were conducted to compare these results with those obtained from the RSR. In addition to these, RSR of phases is very important to improve the goodness of fit (GOF). Therefore, the discussions of refinement of the carbonate mixing were made and a refinement procedure was given for these mixing in detail. Taking advantage of the RSR with the addition of an internal standard, the phase fraction of all the crystalline phases as well as the amorphous component, has been accurately determined. RSR technique offers a valid support for the characterization of marble in the light of industrial products.

Short-Term Outcome of “Double Crown” Tackers Mesh Fixation in Laparoscopic Ventral Hernia Repair  [PDF]
Tamer A. El-Bakary, S. Abdelaziem, A. Abdel Hafiz, Mohamed S. Hashish
Surgical Science (SS) , 2015, DOI: 10.4236/ss.2015.63016

Background:?Many ventral hernia repair methods have been described among surgeons. The traditional primary repair entails a laparotomy with suture approximation of strong fascial tissue on each side of the defect. However, recurrence rates after this procedure range from 12% to 24% during long-term follow-up. Laparoscopic ventral hernia repair (LVHR) is a well recognized minimally invasive surgical technique for repair of different types of abdominal wall ventral hernias. However, the best method of mesh fixation during LVHR is still a subject ofdebate.?Patients & Methods: In the present study, 50 patients were presented with ventral hernia between June 2012 and October 2013. Demographics of the patients were recorded. All patients were submitted to LVHR with mesh fixation by “Double Crown” of tackers. The first crown was placed on the mesh periphery with 1 cm between each 2 successive tackers and the second crown around the edges of the defect. Operative complications, VAS scale, post-operative complications, and length of hospital stay were reported. Results: The mean age was 40.08 years. Female to male ratio was 3:2. The mean BMI was 32.3. The diameter of the hernial defect was <5 cm in 64%, while, the defects larger than 15 cm were excluded. LVHR was successfully completed in all the patients with no conversion. Only 1 patient had intra-operative bleeding from omental vessels that was successfully controlled. The mean operative time was 79 minutes. Post-operatively, the mean VAS was 3.96, 2.12, and 0.24 at 24 hours, 2 weeks, and 4 weeks, respectively. Two patients developed post-operative ileus that was treated conservatively and 1 patient developed persistent seroma that was treated by repeated aspiration. The mean length of hospital stay was 3.08 days. Conclusion: “Double Crown” tackers mesh fixation in LVHR seems to be a safe and effective surgical technique with favorable outcome. However, further randomized studies are needed on larger numbers of patients to validate these results.

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