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  1. No Access

    Article

    Synthesis, characterization and properties of nanocomposites based on poly(vinyl chloride)/carbon nanotubes–silver nanoparticles

    Carboxylated functionalized multiwall carbon nanotubes (FMWCNTs) were prepared via nitric acid treatment. Decoration of FMWCNTs side walls with silver nanoparticles (AgNPs) was performed by mixing in silver ni...

    E M Sadek, S M Ahmed, N A Mansour, S L Abd-El-Messieh… in Bulletin of Materials Science (2023)

  2. No Access

    Article

    Effect of modified graphite nanoflakes on curing, mechanical and dielectric properties of nitrile rubber nanocomposites

    Graphite is a naturally abundant material and thus cost effective as a raw material. The layered structure of natural graphite like silicate clay materials, allows expansion and intercalation. Graphite was exp...

    E. M. Sadek, S. M. Ahmed, D. E. El-Nashar, N. A. Mansour in Polymer Bulletin (2023)

  3. No Access

    Article

    Synthesis, characterization and applications of poly(vinyl chloride) nanocomposites loaded with metal oxide nanoparticles

    Metal oxide (i.e., Fe2O3, ZnO and TiO2) nanoparticles (NPs) have been prepared and investigated by various techniques with the objective of synthesis of nanocomposites thin films based on poly(vinyl chloride) (PV...

    E. M. Sadek, N. A. Mansour, S. M. Ahmed, S. L. Abd-El-Messieh… in Polymer Bulletin (2021)

  4. No Access

    Article

    Effect of a Magnetic Field on the Propagation of Waves in a Homogeneous Isotropic Thermoelastic Half-Space

    The prime objective of the present paper is to analyze the propagation of thermoelastic waves in a homogeneous isotropic elastic semi-infinite space that is exposed to a magnetic field at initial temperature T0 a...

    A. M. Abd-Alla, S. M. Abo-Dahab, S. M. Ahmed, M. M. Rashid in Physical Mesomechanics (2020)

  5. No Access

    Article

    An experimental investigation on the performance of a flat-plate solar collector using eco-friendly treated graphene nanoplatelets–water nanofluids

    The research on the use of nanofluids in thermal energy devices, like solar collectors, has secured a high place in the scientific community of recent years. In the present study, the effects of clove-treated ...

    Naveed Akram, Rad Sadri, S. N. Kazi… in Journal of Thermal Analysis and Calorimetry (2019)

  6. No Access

    Article

    Study on the properties of multi-walled carbon nanotubes reinforced poly (vinyl alcohol) composites

    Nanocomposite films based on polyvinyl alcohol(PVA) and multi-walled carbon nanotubes (MWCNTs) at different weight ratios (i.e.0.0,0.5, 1.0,1.5, 2.0 wt%), were prepared by dispersion techniques. Cationic gemin...

    E. M. Sadek, D. E. El-Nashar, A. A. Ward, S. M. Ahmed in Journal of Polymer Research (2018)

  7. No Access

    Article

    Catalytic conversion of benzene to phenol

    Phenol is very useful intermediate in the manufacture of petrochemicals, drugs, agrochemicals, and plastics. Commercially, phenol is produced by a three-step, high-energy consumption process known as the cumen...

    M. K. Al Mesfer, M. Danisha, S. M. Ahmed in Russian Journal of Applied Chemistry (2016)

  8. No Access

    Chapter and Conference Paper

    Effect of Electroless Ni-Co-P and Co-P Coatings on Cavitation Erosion Resistance

    In the present work, electroless Ni-Co-P and Co-P coatings were produced on AISI 1045 steel with and without post-heat treatment. The properties of electroless coatings were characterized using an optical micr...

    S. A. Karrab, Mohammed S. Aboraia… in Proceedings of the TMS Middle East — Medit… (2016)

  9. Article

    Open Access

    Vitamin D supplementation in obese type 2 diabetes subjects in Ajman, UAE: a randomized controlled double-blinded clinical trial

    To study the effect of Vitamin D3 supplementation on metabolic control in an obese type 2 diabetes Emirati population.

    A Sadiya, S M Ahmed, M Carlsson, Y Tesfa… in European Journal of Clinical Nutrition (2015)

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  10. No Access

    Article

    Synthesis and characterization of modified novolac phenolic resin nanocomposites as metal coatings

    Novolac phenol formaldehyde NPF resin/organobentonite clay nanocomposites were prepared and modified with epoxy and/or urethane resin via solution technique. The prepared samples at organoclay content 2 phr we...

    A. M. Motawie, M. Z. Mohamed, S. M. Ahmed… in Russian Journal of Applied Chemistry (2015)

  11. No Access

    Article

    Slurry Erosion–Corrosion of Carburized AISI 5117 Steel

    The erosion–corrosion of carburized and untreated low alloy steel (AISI 5117) has been investigated using slurry whirling-arm test rig. Erosion–corrosion tests were carried out in slurries composed of sand par...

    B. Saleh, S. M. Ahmed in Tribology Letters (2013)

  12. No Access

    Article

    Investigation of the Ring Area Formed Around Cavitation Erosion Pits on the Surface of Carbon Steel

    The ring areas formed around micropits in cavitation erosion experiments were investigated. The corrosion behavior and vibratory cavitation erosion tests of mild carbon steel in tap and distilled water were ca...

    S. A. Karrab, M. A. Doheim, Mohamed S. Mohammed, S. M. Ahmed in Tribology Letters (2012)

  13. No Access

    Article

    Investigations of the human endocannabinoid system in two subcutaneous adipose tissue depots in lean subjects and in obese subjects before and after weight loss

    Endocannabinoids (ECs) have a role in obesity by affecting appetite and through peripheral effects. Obesity is associated with a dysregulation of the endocannabinoid system (ECS).

    M F Bennetzen, N Wellner, S S Ahmed, S M Ahmed… in International Journal of Obesity (2011)

  14. No Access

    Article

    Thermokinetic studies of poly(o-toluidine) doped with perchloric acid

    Thermokinetic parameters of the solid-state of poly(o-toluidine) (POT) doped with perchloric (HClO4) acid was studied by thermogravimetric analysis (TG) and differential thermal analysis (DTA) under non-isotherma...

    S. M. Ahmed, M. I. Abd-Elrhaman in Journal of Thermal Analysis and Calorimetry (2008)

  15. No Access

    Article

    Chromaticity of poly(o-toluidine) matrix enhanced by anion-exchange mechanism

    The incorporation of 9,10-anthraquinone-1,5-disulfonate (AQS2) into the protonated form of poly(o-toluidine) (POT), produced by oxidative polymerization of the cationic form of the monomer or by do** the basic ...

    S. M. Ahmed in Chemical Papers (2007)

  16. No Access

    Article

    Antioxidant levels in tissues of young and adult camels (Camelus dromedarius)

    In this study, we measured the concentration of some antioxidant substances in erythrocytes hemolysate, liver, kidney and brain in young and adult camels. It has been found that the activity of the antioxidant...

    H. M. Mousa, O. H. Omer, B. H. Ali, N. Al-Wabel… in Journal of Physiology and Biochemistry (2006)

  17. No Access

    Article

    Molecular phylogeny in Indian Tinospora species by DNA based molecular markers

    The phylogenetic relationships among the three species of Tinospora found in India are poorly understood. Morphology does not fully help to resolve the phylogeny and therefore a fast approach using molecular anal...

    S. M. Ahmed, V. Verma, P. H. Qazi, M. M. Ganaie… in Plant Systematics and Evolution (2005)

  18. No Access

    Article

    Chlorophenol wastewater degradation in micellar solutions: A gas chromatographic study

    The effect of photocatalysis and some surfactant micelles on the degradation of m-chlorophenol was investigated. All photochemical experiments were performed with artificial sunlight illumination. The remaining m

    A. M. Badawi, S. M. Ahmed, A. Y. El-Naggar… in Journal of Surfactants and Detergents (2004)

  19. No Access

    Article

    High-quality low-complexity wavelet-based compression algorithm for audio signals

    Wavelets have recently emerged as a powerful tool for signal compression, particularly in the areas of image, video, and audio compression. In this paper, we present a low-complexity wavelet-based audio compre...

    M. Abo-Zahhad, A. Al-Smadi, S. M. Ahmed in Electrical Engineering (2004)

  20. No Access

    Article

    Thermal stresses in a rotating non-homogeneous orthotropic hollow cylinder

     In this paper the radial deformation and the corresponding stresses in a non-homogeneous hollow elastic cylinder rotating about its axis with a constant angular velocity is investigated. The material of the c...

    A. M. El-Naggar, A. M. Abd-Alla, M. A. Fahmy, S. M. Ahmed in Heat and Mass Transfer (2002)

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