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Fractional Order Two Temperature Thermo-Elastic Behavior of Piezoelectric Materials  [PDF]
Essam Bassiouny, Refaat Sabry
Journal of Applied Mathematics and Physics (JAMP) , 2013, DOI: 10.4236/jamp.2013.15017
Abstract:

A new mathematical model of time fractional order heat equation and fractional order boundary condition have been constructed in the context of the generalized theory of thermo piezoelasticity. The governing equations have been applied to a semi infinite piezoelectric slab. The Laplace transform technique is used to remove the time-dependent terms in the governing differential equations and the boundary condition. The solution of the problem is first obtained in the Laplace transform domain. Furthermore, a complex inversion formula of the transform based on a Fourier expansion is used to get the numerical solutions of the field equations which are represented graphically.

Interactive Effect of Forage Mixing Rates and Organic Fertilizers on the Yield and Nutritive Value of Berseem Clover (Trifolium alexandrinum L.) and Annual Ryegrass (Lolium multiflorum Lam.)  [PDF]
Heba Sabry Attia Salama
Agricultural Sciences (AS) , 2015, DOI: 10.4236/as.2015.64041
Abstract:

Berseem clover (Trifolium alexandrinum L.) is the main winter forage legume in Egypt. Despite that the yield and protein content of berseem clover are high, it is characterized by low dry matter content especially in the 1st cut. Intercropping berseem clover with forage grasses, especially annual ryegrass (Lolium multiflorum Lam.) is a recommended technique to produce higher forage yield with better balanced nutritional quality. However, little is known about the performance of these proposed mixtures under the arising organic farming system in Egypt. Organic farming and the application of organic fertilizers (compost and poultry manure) are receiving increased attention in the last few years. Thus, the current study was carried out on the winter season of two successive years (2012 and 2013) in the experimental station of SEKEM organic farm, Egypt. Main aim was to investigate the variation in 1st cut forage yield and nutritive value of berseem clover and annual ryegrass, grown in pure stands and with three mixing rates, under three organic fertilization regimes (compost, poultry litter, and no fertilization). Nutritive value was judged through investigating the crude protein (CP), total carbohydrates (TC), and fiber fractions (NDF, ADF, and ADL). Results revealed significant two-way interaction between the forage treatments and the fertilization regimes for all the studied parameters. In general, mixing berseem clover with annual ryegrass, fertilized by compost or poultry litter resulted in significantly higher forage yield, dry matter content, and balanced CP, TC, and fiber fractions, compared to the pure stands.

O novo romance egípcio: transforma??o urbana e forma narrativa
Hafez, Sabry;
Novos Estudos - CEBRAP , 2011, DOI: 10.1590/S0101-33002011000200009
Abstract: the new egyptian novel shares a set of distinct narrative characteristics; these involve both a rupture with earlier realist and modernist forms, and a transformation of the rules of reference by which the text relates to the extrinsic world. the author suggests that, whatever their actual settings, these works share demonstrable formal homologies with the sprawling slums of cairo itself.
A Novel Field Scattering Formulation for Polarimetric Synthetic Aperture Radar: 3D Scattering and Stokes Vectors
Ramin Sabry
PIER M , 2012, DOI: 10.2528/PIERM12061910
Abstract: Conventional Far-field decomposition of the scattered electromagnetic (EM) field in the [EH] plane in terms of the horizontal and vertical components (i.e., h, v), introduces ambiguity for multi-static, multi-platform and/or scene-centric polarimetric synthetic aperture radar (SAR) image exploitation. This is due to the fact that a 2-dimensional (2D) vector field can not constitute a complete space capable of modeling 3-dimensional (3D) field transformations. To address this, extension of the Stokes vector, target scattering vectors and coherency parameters' analytic descriptions to 3D is explored and presented. The results are also applicable to compact polarimetry (CP) where mathematically consistent 3D Stokes parameters can be defined.
The role of oral L-Carnitine therapy in chronic hemodialysis patients
Sabry Alaa
Saudi Journal of Kidney Diseases and Transplantation , 2010,
Abstract: To evaluate the effects of L-carnitine oral supplementation on anemia and cardiac function in patients on maintenance hemodialysis (HD), we studied 55 adult chronic HD patients at our center during the period from January 2006 to June 2006 and divided them into two groups; a group of 20 patients who received 1,500 mg/day oral L-carnitine and a control group of 35 patients. Both groups were on erythropoietin therapy. Echogardiographic studies were performed before and at the end of the study. The mean hemoglobin levels were comparable in the L--carnitine group and the control group at the start and after 6 months of therapy (8.63 ± 1.77 and 9.39 ± 2.02 gm/dL, P= 0.18; 10.49 ± 1.65 and 10.92 ± 2.48 gm/dL, P= 0.76, respectively). The mean weekly maintenance dose of erythropoietin was not statistically significantly different in L-carnitine group (80.16 ± 35.61 units/kg) and the control group (91.9 ± 38.21 units/kg, P= 0.20). In addition no significant improvement could be observed in the echogardiographic findings in the L-carnitine group after therapy. We conclude that our study revealed no significant improvement in hemoglobin, erythropoietin dose and echocardiographic findings after six months of therapy. Long-term studies including larger number of patients are required to clarify the questionable role of L-carnitine in the HD patients.
Two Temperature Heat Flux of Semi Infinite Piezoelectric Ceramic Rod  [PDF]
Essam Bassiouny, Refaat Sabry, Hamdy Youssef
Engineering (ENG) , 2013, DOI: 10.4236/eng.2013.53038
Abstract:

The theory of two-temperature generalized thermoelasticity is used to solve the problem of heating a semi-infinite rod made of a piezoelectric ceramic material within the framework of generalized thermopiezoelasticity theory by supplying the rod a certain amount of heat uniformly distributed over a finite time period to the finite end of the rod. The Laplace transform formalism is used to solve the proposed model. Inverse Laplace transforms are computed numerically using a method based on Fourier expansion techniques. The physical parameters (i.e., conductive temperature, dynamical temperature, stress, strain, and displacement distributions) are investigated graphically.

Impact of a Clinical Pharmacist in the General Hospital: An Egyptian Trial  [PDF]
Nirmeen A. Sabry, Maggie M. Abbassi
Pharmacology & Pharmacy (PP) , 2014, DOI: 10.4236/pp.2014.56068
Abstract:

Medication review aims at optimizing the impact of medications while minimizing their related problems. Drug-related problems have never been properly addressed in Egyptian hospitals. The purpose of this paper is to record and compare the prevalence and types of medication related problems, the interventions provided by the clinical pharmacists and how physicians responded along with making recommendations for error prevention. This prospective study was conducted between June 2012 and December 2012, at an Egyptian general hospital. Five trained pharmacists recorded patient-specific medication related recommendations and completed quality-of-care interventions. The average number of audited doses was 81% of those prescribed. The most prevalent medication problem was prescribing errors followed by administration errors. A total of 20 patients experienced adverse drug events. The greatest error rates across the seven months were observed in the ICU and cardiology units. Numbers of interventions offered by the pharmacists ranged from 241, to 519 per month. Nurses accepted all the interventions introduced by the pharmacists aimed at reducing administration errors while physicians’ resistance rates had an average of 21%. This study showed a positive influence of the pharmacist-led medication review in reducing potential drug-related problems in an Egyptian secondary care where the hospital under study implemented new measures to minimize drug related problems according to the findings of the trained pharmacists.

Rasch Rating Scale Analysis of the Arabic Version of the Physical Activity Self-Efficacy Scale for Adolescents: A Social Cognitive Perspective  [PDF]
Sabry M. Abd-El-Fattah
Psychology (PSYCH) , 2015, DOI: 10.4236/psych.2015.616213
Abstract: This study uses the Rasch rating scale analysis within the framework of the social cognitive theory to examine four psychometric properties of the Arabic version of the Physical Activity Self-efficacy Scale for Adolescents (PASESA-Av): 1) item technical quality to evidence content validity; 2) unidimensionality structure to evidence structural validity; 3) rating scale functioning to evidence substantive validity; and 4) person and item separation and reliability. The analyses showed that the PASESA-Av items represented the physical activity self-efficacy trait adequately. The PASESA-Av demonstrated good fit to the Rasch model and formed a unidimensional structure. The PASESA-Av response categories advanced monotonically. The PASESA-Av demonstrated satisfactory person and item separation and reliability.
Deleterious Effects of Reactive Metabolites
Sabry M. Attia
Oxidative Medicine and Cellular Longevity , 2010, DOI: 10.4161/oxim.3.4.13246
Abstract: A number of drugs have been withdrawn from the market or severely restricted in their use because of unexpected toxicities that become apparent only after the launch of new drug entities. Circumstantial evidence suggests that, in most cases, reactive metabolites are responsible for these unexpected toxicities. In this review, a general overview of the types of reactive metabolites and the consequences of their formation are presented. The current approaches to evaluate bioactivation potential of new compounds with particular emphasis on the advantages and limitation of these procedures will be discussed. Reasonable reasons for the excellent safety record of certain drugs susceptible to bioactivation will also be explored and should provide valuable guidance in the use of reactive-metabolite assessments when nominating drug candidates for development. This will, in turn, help us to design and bring safer drugs to the market.
Data Mining Visualization to Support Biochemical Markers for Liver Fibrosis in Patients With Chronic Hepatitis C Virus
Ayman Khedr & Samir Sabry.
International Journal of Artificial Intelligence and Expert Systems , 2011,
Abstract: The reference diagnostic test to detect fibrosis is liver biopsy (LB), a procedure subject to variouslimitations, including risk of patient injury and sampling error. FibroTest (FT) and ActiTest (AT) arebiochemical markers (noninvasive tests) used in determining the level of fibrosis and the degreeof necroinflammatory activity in the liver [1]. The objective of this work is to discover thedifferences in the temporal patterns between noninvasive tests and liver biopsy by visualizationtools, which made it easier to understand the relations of the complicated rules. This Study warefocused on the major serum fibrosis markers (FT/AT). The test uses a combination of serumbiochemical markers with visualization technique to evaluate whether biochemical markers canbe used to estimate the stage of liver fibrosis and necro-inflammatory activity in the liver.
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